Showing papers on "Bellows published in 2017"

Design, characterization, and manufacturing of circular bellows pneumatic soft actuator

Abstract: In the present study, the performance of silicone rubber-based bellows-structured pneumatic actuator was analyzed in terms of output bending motion and bending force with relation to input pressure. To perform the analysis, the structural parameters of length, diameter, and wall thickness were characterized and tested with two different silicone materials. The simulation analysis revealed that the stiffness of the silicone materials selected for the bellows actuator imposes strong effects on its bending motion and pneumatic input pressure requirement. Furthermore, the characterization of material-S-based bellows actuator having lengths 84, 126, and 168 mm, with a maximum diameter and a wall thickness of 14 and 1.4 mm, respectively, resulted in maximum output bending angles of 142.4°, 137.5°, and 117° at minimum pneumatic input pressures of 85.5, 66.5, and 85.5 kPa, respectively. Hence, the bellows actuator that simulated in a maximum bending angle of 142.4° was fabricated for validation and experimentally resulted in an average bending force of 9 N.

Geometry and design of origami bellows with tunable response.

Abstract: Origami folded cylinders (origami bellows) have found increasingly sophisticated applications in space flight and medicine. In spite of this interest, a general understanding of the mechanics of an origami folded cylinder has been elusive. With a newly developed set of geometrical tools, we have found an analytic solution for all possible cylindrical rigid-face states of both Miura-ori and triangular tessellations. Although an idealized bellows in both of these families may have two allowed rigid-face configurations over a well-defined region, the corresponding physical device, limited by nonzero material thickness and forced to balance hinge and plate-bending energy, often cannot stably maintain a stowed configuration. We have identified the parameters that control this emergent bistability, and we have demonstrated the ability to design and fabricate bellows with tunable deployability.

An Inductance-Based Sensing System for Bellows-Driven Continuum Joints in Soft Robots

Abstract: In this work we present a novel, inductance-based system to measure and control the motion of bellows-driven continuum joints in soft robots. The sensing system relies on coils of wire wrapped around the minor diameters of each bellows on the joint. As the bellows extend, these coils of wire become more distant, decreasing their mutual inductance. Measuring this change in mutual inductance allows us to measure the motion of the joint. By dividing the sensing of the joint into two sections and measuring the motion of each section independently, we are able to measure the overall deformation of the joint with a piece-wise constant-curvature approximation. This technique allows us to measure lateral displacements that would be otherwise unobservable. When measuring bending, the inductance sensors measured the joint orientation with an RMS error of 1.1 °. The inductance sensors were also successfully used as feedback to control the orientation of the joint. The sensors proposed and tested in this work provided accurate motion feedback that would be difficult to achieve robustly with other sensors. This sensing system enables the creation of robust, self-sensing soft robots based on bellows-driven continuum joints.

Modeling of extensible pneumatic actuator with bellows (EPAB) for continuum arm

Abstract: The ability of a continuum arm is influenced by the performance of an actuator. Although several extensible pneumatic actuators have been proposed in previous research, balancing strength with large strain is still a challenge. We propose an extensible pneumatic actuator with bellows (EPAB) that consists of a rubber tube and a highly packed bellows sleeve. We propose a parametric model of the EPAB that can comprise various bellows and rubber tubes. We measured the basic properties of four actuators with different parameters to verify the proposed model. We conducted evaluation experiments under two conditions: constant length with variable pressure and constant pressure with variable length. The experimental results indicate that the proposed model can roughly predict the measured data. The proposed extensible actuator has an unloaded strain of up to 350% at a pressure of 0.6 MPa.

Springback behaviors of bi-layered non-homogeneous bellows in hydroforming

Abstract: Due to the complicated material and structural characteristics of bi-layered non-homogeneous bellows (BNBs) in hydroforming, the bellow deviates easily from its designed profile and this inevitable phenomenon results in a low forming precision. Therefore, it is important to study the springback behavior of bellows for precision forming. Based on finite element (FE) analysis, comparative studies on profiles of single-layered bellows, bi-layered homogeneous bellows (BHBs), and BNBs with two expansion ratios (k, the ratio of outer-to-inner diameter) k = 1.2 and k = 1.6 as well as two materials 304SS and Inconel 718 are implemented. The springback behaviors of different simulation settings are investigated, and several conclusions are drawn: (1) after springback, the U-shaped convolution profile is changed to tongue shape accompanied by a 2.5~38.5% axial elongation and a 0.1~0.6% radial shrinkage; (2) the springback tendency grows with the increase of number of layers, the improvement of mechanical properties of material, and the decrease of expansion ratio.

Effect of design parameters on the static mechanical behaviour of metal bellows using design of experiment and finite element analysis

Abstract: The present work elucidates a systematic analysis to understand the influence of design parameters on the static mechanical behavior of metal bellows. This investigation was carried out by applying design of experiment (DOE) techniques. The required responses for DOE were obtained from a set of Finite Element Analysis (FEA) for various configurations of bellows. The FEA results of metal bellows were validated using Expansion Joints Manufacturing Association standard. A mathematical relationship between the design parameters and the static mechanical behavior was derived. It was found that the wall thickness of metal bellows has great influence on the static mechanical behavior of the component. Further the design parameters for the required output were optimized using desirability approach and validation test were carried out using FEA.

Fluidic robotic actuator system and method

Abstract: A fluidic robotic actuator configured to assume at least a neutral position, the fluidic robotic actuator includes a first and second plate defining respective planar portions that are disposed in parallel planes in the neutral position. The fluidic robotic actuator also includes a plurality of elongated bellows extending between the first and second plates, the bellows each having a central main axis that is parallel to the central main axis of the other bellows in the neutral position, the main axis of the bellows being perpendicular to the parallel planes of the first and second plates in the neutral position, the bellows being coupled to the first and second plates at respective first and second ends of the bellows.

Small dimension ceramic tile vision sorting device

Abstract: The utility model relates to a small dimension ceramic tile vision sorting device, including conveyor, an image collecting device, image processing device and controller, conveyor includes the frame and sets up the conveyer belt in the frame, still include the wastrel removing devices who is connected with the controller, wastrel removing devices includes industrial robot and is used for picking the mechanism of ceramic tile, it connects on industrial robot to pick the mechanism, the image acquisition device is including corresponding the isolation camera bellows that the conveyer belt set up, be equipped with mounting bracket and light source in the isolation camera bellows, be equipped with linear array CCD camera on the mounting bracket, still include the sensor for sensing ceramic tile supplied materials, the feed inlet that sensor settings is keeping apart the camera bellows just is connected to the controller. This scheme, through industrial robot with pick the mechanism and sort the ceramic tile wastrel, improve letter sorting speed, reduce the production cycle of product, reduced the cost of labor effectively, adopt linear array CCD camera to carry out image acquisition to the ceramic tile, can improve the detection precision.

Plate cutting device

Abstract: The utility model discloses a plate cutting device, including landing leg, workstation, slide and support, the lower extreme of landing leg is fixed with the snubber block, is equipped with the slide between roof and workstation, installs the motor in slide front end bottom through the fixing base, and the terminal rigid coupling of motor output shaft has an emery wheel, and telescopic link in the hydro -cylinder passes behind the roof terminal rigid coupling downwards to be had at slide top face, the workstation middle part open have with the corresponding cut groove that cuts of emery wheel, push rod mutual disposition in the cylinder, install the lamp area on the support, have the incandescent lamp through bellows fixed mounting on the roof, the lower fixed surface of workstation has bellows. The utility model discloses an it is tight that the cylinder makes splint press from both sides panel, avoids taking place the skew, guarantees that processing is accurate, through the air exhauster with the piece suction that cuts down to the bellows in, reinforced wheel surrounding air's flow reduces the temperature of emery wheel, the snubber block that sets up can weaken the striking to ground, reduces the noise, improves the surrounding environment.

Highly compressible origami bellows for microgravity drilling-debris containment

Abstract: The design and testing of an origami-based bellows for microgravity drilling is described. The potential benefits of an origami-based solution created an opportunity for application on NASA’s Asteroid Redirect Mission (ARM) to protect sensitive parts from debris. Origami-based bellows were designed to fit spatial limitations and meet needed compression ratios. Designs have demonstrated high mass reductions, improved stroke length, greatly decreased stowed volume, improved flexibility, and reduced reaction forces in comparison with traditional metal bellows. A nylon-reinforced polyvinyl fluoride based bellows with an aramid fiber stitched seam is well suited for debris containment in space conditions. Various epoxies maintained an adequate bond with polyvinyl fluoride below expected environmental temperature for bellows mounting. Asymmetric compression of the bellows occurs at extreme low temperatures and is preventable by balancing stiffness within the structure.

A loading attachment for car bellows braider

Abstract: The utility model discloses a loading attachment for car bellows braider, including the frame with install the conveyer belt in the frame, be equipped with the case of depositing that is used for placing the automobile bellows in the frame, deposit the top that the case lies in the conveyer belt, deposit the case and be equipped with and supply the automobile bellows mouth that drops on the conveyer belt that drops one by one, the one time diameter that is greater than the automobile bellows in the ascending interval of vertical side with the conveyer belt of dropping mouthful just is lighter than the twice diameter of automobile bellows. But this loading attachment has, and simple structure, easily preparation, cost of manufacture are low, the reliable greatly reduced intensity of labour of job stabilization, reduce advantages such as cost of labor.

Double bellows typed apparatus

Abstract: The present invention relates to a double bellows device capable of detecting a leak in advance to minimize damage due to a leak of a bellows, suppressing generation of fume accumulated in the bellows, and minimizing damage caused by explosion of the bellows. The double bellows device comprises: an inner bellows (100) made of a corrugated pipe-shaped metal having a ridge and a valley; an outer bellows (200) inserted to the outer side of the inner bellows (100) to be spaced apart therefrom; first and second flanges (300, 400) respectively connected to both sides of the inner bellows (100) and the outer bellows (200); a leak detector (500) installed in the first flange (300) to sense a leak of the inner bellows (100) and the outer bellows (200); an inner pipe (600) mounted on the inner side of the inner bellows (100) to be spaced apart therefrom, and having one end separated from the first flange (300) and the other end connected to the second flange (400); and an outer pipe (700) mounted on the outer side of the outer bellows (200) to be spaced apart therefrom, and having one end connected to the first flange (300) and the other end separated from the second flange (400).

The bellows conjecture for small flexible polyhedra in non-Euclidean spaces

Abstract: The bellows conjecture claims that the volume of any flexible polyhedron of dimension 3 or higher is constant during the flexion. The bellows conjecture was proved for flexible polyhedra in the Euclidean spaces of dimensions 3 and higher, and for bounded flexible polyhedra in the odd-dimensional Lobachevsky spaces. Counterexamples to the bellows conjecture are known in all open hemispheres of dimensions 3 and higher. The aim of this paper is to prove that, nonetheless, the bellows conjecture is true for all flexible polyhedra in either spheres or Lobachevsky spaces of dimensions greater than or equal to 3 with sufficiently small edge lengths.

A drilling equipment for bellows

Abstract: The utility model provides a drilling equipment for bellows, include have the drilling machine drilling equipment body of (3), outer jack catch (4) of centre gripping on the lateral surface of bellows, rise tightly interior jack catch (5) on the medial surface of bellows, set up to linking and be used for three -jaw chuck (10) of outer jack catch (4) motion with drilling equipment body and outer jack catch (4) respectively, set up to respectively with drilling equipment body and interior jack catch (5) hookup and be used for the receipts of interior jack catch (5) motion device that rises, outside the through -hole of jack catch (4) and interior jack catch (5) be provided with the through -hole respectively outside and through -hole and interior jack catch (5) of jack catch (4) set up into with the corresponding distribution of drilling machine (3), it is used in outer jack catch (4) and interior jack catch (5) respectively the drilling position of bellows to rise by the device through three -jaw chuck (10) and receipts, make and be in the bellows position of needs drilling by the location state, lean on the manual work to punch to the bellows, consequently, the drilling accuracy to the bellows has been improved.

Sweeps cleaning device of lathe

Abstract: The utility model discloses a sweeps cleaning device of lathe, the power distribution box comprises a box body, the inside bottom of box is equipped with the baffle, and the box is separated for first cavity and second cavity by the baffle, the second dog is installed to the side of baffle, and the second dog is located first cavity, and the apron is installed at the top of box, the bellows is installed at the top of apron, and bellows and first cavity communicate, and the fan is installed at the top of apron, the exit linkage of fan has the tuber pipe, the one end and first cavity intercommunication of fan are kept away from to the tuber pipe, and the motor is installed at the top of apron, and pegging graft and have the pivot in the top of apron, and laps to rotate with the pivot and be connected, the pivot is located the inside of second cavity, be connected with the belt between the output shaft of motor and the pivot, the puddler is installed to the side of pivot, and indisputable brush hair is installed to the side of puddler. The utility model discloses the effect of separation is very good, washs very totally, and the recycle of the metal fillings of being convenient for has fine economic value.

Efficient paint spraying device for surface of motor shell

Abstract: The invention discloses an efficient paint spraying device for the surface of a motor shell. The efficient paint spraying device for the surface of the motor shell comprises a supporting bottom plate; a control cabinet is fixedly mounted on one side surface of the supporting bottom plate; the drive motor shell is fixedly mounted at the top of a paint spraying chamber; a baffle is horizontally and fixedly mounted in the paint spraying chamber; a driven shaft is rotationally arranged on a bearing pedestal; a driven gear is coaxially and fixedly mounted on the driven shaft; a drive gear is in engaged connection with the driven gear; metal hooks are uniformly and fixedly mounted at the bottom of a horizontal plate; a conveying fan is mounted at the top of the baffle and located at the right side of the driven shaft; a gas filter is fixedly mounted on the bottom surface of the baffle; and an induced draft fan and a heater are arranged at the bottom of the inner wall of an air supply bellows. According to the efficient paint spraying device for the surface of the motor shell, through the induced draft fan, an air blower and the heater arranged in the air supply bellows, hot air can be continuously conveyed into the paint spraying chamber, paint on the surface of the motor shell can be fast dried, and the working efficiency of the paint spraying device is improved.

Hydraulically driven joint for a force feedback manipulator

Abstract: Recently, surgical manipulators have been widely used to support human operations, such as surgical operations. These manipulator systems are suitable for careful work, but they have a few problems. One problem is that the manipulators are not equipped with haptic sensing functions. When a manipulator does not employ haptic sensing functions, an operator can only conduct an operation using visual feedback. Therefore, to substitute for visual detection, it is necessary for the operator to use advanced techniques to determine physical contact during an operation. We have developed a new mechanism to solve this problem. A hydraulically driven joint is constructed in a spherical bearing and bellows tubes that enables a haptic sense display for the operator. This system can measure the small forces acting on the tips of the manipulator using Pascal’s principle. A model of the system is derived from the relationship between the internal pressure of the bellows tube and the refraction angles of the joint. In this study, we quantitatively investigated the relationship between the internal pressure of the bellows tubes and the refraction angles of the joint. To estimate the refraction angle, we measured the quantity of water that was provided from syringes. It was confirmed that the developed system allowed for an estimation of both the strength and direction of the external force applied to the manipulator by measuring the bellows tubes’ internal pressure. This report describes the prototype joint.

Air vortex ring generator

Abstract: PROBLEM TO BE SOLVED: To provide a vortex ring generator for local air-conditioning capable of making an air vortex ring reach a far target with a distance of 10 m or more and feeling wind pressure.SOLUTION: An air vortex ring generator includes: an opening nozzle configured to generate an air vortex ring; a body including an inner chamber in which the opening nozzle is arranged its tip part and air to be discharged is stored therein; and a compression unit configured to compress the inner chamber to a rear end part of the body and push out air from the opening nozzle. The compression unit is a cylindrical body; an outer peripheral part is formed in such a bellows manner as to expand/contract in an axial direction; a rear end surface is sealed by a backing plate; the vortex ring is jetted out with a driving unit configured to drive a struck plate with telescopic operation of a main spring, the struck plate colliding with the backing plate and pushed in; and the vortex ring has a faster propagation speed and can arrive to a long distance.SELECTED DRAWING: Figure 1

Bellows cutting device

Abstract: The utility model discloses a bellows cutting device, including bottom plate, main tributary vaulting pole, sliding sleeve, cavity, screw rod, bevel gear assembly, reduction gear, motor, joint support pole, cutting wheel piece, hydraulic pressure regulation pole, clamping device, controlling means, power connecting hole, support column, supporting baseplate, the sliding sleeve includes overcoat, endotheca, connecting block, has seted up the slide opening with connecting block matched with on the main tributary vaulting pole, clamping device includes diaphragm, support frame, centre gripping cylinder, head rod and second connecting rod. The utility model has the advantages of simple and reasonable structure, convenient to use, through motor and reduction gear can be convenient carry out the regulation of height to the cutting wheel piece, feeding accuracy is high, the ripple pipe fitting that can effectually treat the cutting in addition carries out the centre gripping, centre gripping convenient and fast, the centre gripping is stable, degree of automation is high in addition, life is longer.

Metal bellows with axial stiffeners, and forming method

Abstract: The invention provides a metal bellows with axial stiffeners. The metal bellows is a corrugated metal hose with the axial stiffeners at the wave trough position. The forming method of the corrugated metal hose comprises the steps of rolling plates to form corrugation, then curling and welding, and finally bulging on a bulging machine; flat expanding axial waves at the wave peak position so that the wave peak position has no the axial stiffeners, while the axial stiffeners at the wave trough position are reserved, so that the corrugated metal hose with the axial stiffeners at the wave trough position is obtained. The bending deformation rigidity of the corrugated metal hose is high; in case of axial elongation deformation, the deformation mainly focuses on the wave peak position, while the wave trough position is hardly deformed; and the service life of the corrugated metal hose is prolonged effectively.

Valve having a metal-bellows/piston unit

Abstract: The invention relates to a valve (1), comprising a valve housing (4) and a closing body (3) arranged in the valve housing (4) in such a way that the closing body can be moved longitudinally, wherein at least one inlet channel (5) and at least one outlet channel (6) are arranged in the valve housing (4). The closing body (3) interacts with a valve seat (8) formed on the valve housing (4) by means of the longitudinal motion of the closing body and thereby opens and closes at least one hydraulic connection between the at least one inlet channel (5) and the at least one outlet channel (6). The closing body (3) can be driven by means of a metal-bellows/piston unit (2), wherein the metal-bellows/piston unit (2) has a variable-length metal bellows (20) and a variable-volume working chamber (23) and wherein the metal bellows (20) bounds the working chamber (23) in a sealing manner.

Perpendicular transport corridor of high -rise building rubbish

Abstract: The utility model discloses a perpendicular transport corridor of high -rise building rubbish, add the muscle bellows including DN300FRPP, 45 the skew T, snap ring and angle steel welding, galvanized iron, expansion bolts, square tubular, foggy sprinkler head, springboard and dust screen, the angle iron support frame, autoclaved sand -lime brick, PVC pipe and garbage pool, the cover had 45 skew ts on DN300FRPP added the muscle bellows, 45 the cover has galvanized iron to make the horn mouth form on the skew T, DN300FRPP is with being provided with expansion bolts on the muscle bellows, the inside that DN300FRPP adds the muscle bellows is provided with square tubular, springboard and dust screen have been laid to the top of angle iron support frame, be provided with foggy sprinkler head on springboard and the dust screen, the bottom of dust screen is provided with garbage pool, garbage pool's side surface step has autoclaved sand -lime brick, the garbage pool bottom is provided with the PVC pipe, the decoration construction stage, the construction elevator load is great, the garbage shaft has reduced construction elevator's load, strong assurance is provided for the matter transport, greatly practiced thrift the time limit for a project

Dust removal device for board engraving machine

Abstract: The invention belongs to the technical field of dust removal and particularly discloses a dust removal device for a board engraving machine. The dust removal device comprises a dust cover and a bellows, wherein a dust suction fan is arranged at one end, connected with the dust cover, of the bellows, one end of the bellows communicates with the upper part of the dust cover, the other end of the bellows is connected with a rigid air inlet pipe, and the air inlet pipe is obliquely fixed on a portal frame; the dust suction fan is arranged in the communication position of the bellows and the dust cover; a push plate which can only rotate anticlockwise and can collide with the inner wall of the air inlet pipe is hinged on the lower side surface of the air inlet pipe; an elastic dust collection cloth bag is arranged in the air inlet pipe, and a dust collection box located below the push plate is arranged on the lower surface of the air inlet pipe; an exhaust pipe is arranged on the air inlet pipe. The device enables the push plate to swing by the aid of gravity produced by collected dust, the dust collection cloth bag is opened with swinging of the push plate, and the purpose of automatic clearing of the dust collection cloth bag is achieved; the device can effectively solve the problem that dust is easily accumulated on the inner wall of the air inlet pipe.

Maintenance -free leakage -proof telescopic joint for hydropower

Abstract: The utility model discloses a maintenance -free leakage -proof telescopic joint for hydropower, including mount pad, bellows, pull rod, both ends all are fixed with the mount pad about the bellows, still are provided with the pull rod between the upper and lower mount pad, and the bellows surface is provided with the sleeve pipe, and sleeve pipe side middle part is fixed with the sensor, is connected with test probe on the sensor, and test probe passes through the wire with the sensor and is connected, and test probe is arranged in the clearance between sleeve pipe and the bellows, and fixed surface has the battery under the sensor Foretell maintenance -free leakage -proof telescopic joint for hydropower's beneficial effect lies in: this telescopic joint has the automated inspection of a leaking function, the controller can be in real time sends management Department's computer with the behavior of bellows in the telescopic joint through the antenna on, need not the special messenger and regularly safeguards the maintenance, damage when leaking when the bellows, and the alarm lamp warning of can glimmering voluntarily, simultaneously, the antenna sends report information on can the computer to management Department

It is multi -functional with railway device that sweeps away snow

Abstract: The utility model provides an it is multi -functional with railway device that sweeps away snow, which comprises a vehicle rack, the head sweeps away snow, heating device, bellows, the frame below is provided with the gyro wheel with rail matched with, the gyro wheel is connected in drive arrangement, the head that sweeps away snow sets up in the frame front end, the head that sweeps away snow is provided with two rows of brush heads, brush head bottom is connected with the pivot, the pivot is driven by the motor and rotates, the inside heating resistor silk that is provided with of brush head, the resistance wire is connected with the temperature controller electricity, bellows set up in the first rear end position of sweeping away snow, bellows are provided with air intake and air outlet, the air intake is provided with the air -blower, the air outlet is provided with heating device The utility model discloses novel structure, the practicality is strong, adopts the mode of clearing up and drying and combining together for ice and snow clearance effect more thoroughly is fit for promoting on a large scale in railway apparatus field