A piston ring sizing device

Abstract

The application discloses a piston ring diameter contraction equipment, which comprises a machining rack, a ring diameter contraction assembly, a contraction supporting support, a lower supporting cylinder, a lower pressing block, a lifting plate, an upper pressing block and an upper supporting cylinder.

Description

Technical Field

[0001] This invention relates to the field of piston ring processing technology, and in particular to a piston ring diameter shrinkage device. Background Technology

[0002] Before the piston rings are chamfered to form the piston ring plates, the piston ring diameter needs to be reduced to the required size. In existing technology, to produce piston rings with the exact correct diameter, it is not possible to automatically reduce the diameter according to the required size. Two workers are required to manually reduce the diameter of the piston rings, which is labor-intensive, time-consuming, and inefficient, and it is impossible to guarantee that the reduction effect is consistent for each piston ring. Therefore, there is an urgent need to develop a specialized device that can automatically reduce the piston ring diameter before chamfering. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems existing in the above and / or existing piston rings due to diameter shrinkage, the present invention is proposed.

[0005] Therefore, the problem to be solved by this invention is the inability to automatically shrink the piston ring diameter. This invention provides a piston ring diameter shrinking device with an ingenious structure that can automatically shrink the piston ring diameter, so as to process piston ring plates of different sizes and improve utilization.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a piston ring diameter shrinkage device, comprising,

[0007] Processing rack;

[0008] The piston ring shrinkage assembly includes a first movable seat and a second movable seat slidably connected above the processing frame and capable of moving towards or away from each other. Two spaced-apart first retaining ring guide rods are fixedly connected to the first movable seat, and two spaced-apart second retaining ring guide rods are fixedly connected to the second movable seat. The first and second retaining ring guide rods can hold the piston ring. A shrinkage support bracket is rotatably connected to the processing frame, located between the first and second movable seats. A lower support cylinder for fitting the piston ring is connected to the shrinkage support bracket. A lower pressing block capable of moving towards or away from the lower support cylinder and a lifting plate capable of reciprocating linear motion in the height direction are connected to the processing frame. The lower pressing block is movably connected to the shrinkage support bracket. An upper support cylinder aligned with the lower support cylinder is fixedly connected to the lower side of the lifting plate, allowing the upper part of the piston ring to fit onto the upper support cylinder. An upper pressing block capable of moving towards or away from the upper support cylinder is connected to the lifting plate.

[0009] In the initial state, the distance between the first and second retaining ring guide rods is just enough to allow the piston ring to slide downwards and fit onto the lower support cylinder. The piston ring, with its smooth outer edge, fits onto the lower support cylinder, causing the upper support cylinder to descend and insert into the upper part of the piston ring. The lower pressing block presses against the lower outer ring of the piston ring, while the upper pressing block presses against the upper outer circumference of the piston ring. The first and second moving seats move in opposite directions, moving away from the piston ring to a position that allows the lower pressing block to rotate. This causes the lower support cylinder and the lower pressing block to rotate, with the lower pressing block pressing against the lower part of the piston ring. The lower part of the piston ring rotates while the upper pressing block remains stationary, preventing the upper part of the piston ring from rotating and causing it to shrink. When the piston ring shrinks to the appropriate diameter, the lower support cylinder stops rotating. Simultaneously, the first and second moving seats move towards each other, and the first and second retaining ring guide rods hold the outer edge of the shrunken piston ring in place, preventing it from expanding outwards and springing back. Once the piston ring size stabilizes, the first and second moving seats move away from each other, and the robotic arm on the upper side of the processing rack removes the piston ring and transfers it to the next process. This invention cleverly achieves piston ring diameter shrinkage, improving the utilization rate of piston rings of different sizes.

[0010] As a preferred embodiment of the piston ring diameter shrinkage device of the present invention, the ring diameter shrinkage assembly further includes a connecting block movably connected to the outside of one end of the shrinkage support bracket, the lower pressing block is fixedly connected to the upper side of the connecting block, at least one connecting shaft is fixedly connected to the shrinkage support bracket, the connecting block can slide along the connecting shaft outside the shrinkage support bracket, a pressing return spring is fixedly connected to the connecting shaft, and the side of the pressing return spring away from the outer end of the connecting shaft is fixedly connected to the connecting block.

[0011] As a preferred embodiment of the piston ring diameter shrinkage device of the present invention, wherein: a lower linear actuator is fixedly connected to the processing frame, a lower push-pull rod capable of reciprocating linear motion in the horizontal direction is connected to the lower linear actuator, a push-pull plate is fixedly connected to one end of the lower push-pull rod relative to the shrinkage support bracket, a pulling part is fixedly fixed to the upper side of the push-pull plate away from the lower push-pull rod, a loosening protrusion for releasing the piston ring by the lower pressing block is fixed to the lower side of the connecting block, when the piston ring is fitted into the lower support cylinder, the lower pressing block presses against the outer circumference of the lower part of the piston ring under the action of the pressing and restoring spring, at this time the pulling part is between the loosening protrusion and the shrinkage support bracket.

[0012] As a preferred embodiment of the piston ring diameter shrinkage device in this invention, at least one limiting block is fixedly connected to the upper side of the upper support cylinder, and the outer end of the limiting block extends beyond the outer side of the piston ring.

[0013] As a preferred embodiment of the piston ring diameter shrinkage device of the present invention, wherein: an upper linear actuator is fixedly connected to the lower side of the lifting plate, an upper push-pull rod capable of reciprocating linear motion in the horizontal direction is connected to the upper linear actuator, an intermediate connecting plate is fixedly connected to one end of the upper push-pull rod relative to the upper support cylinder, and the upper pressing block is fixedly connected to the intermediate connecting plate.

[0014] In a preferred embodiment of the piston ring diameter shrinkage device of the present invention, a first displacement sensor is fixedly connected to the lifting plate below the lower pressing block.

[0015] As a preferred embodiment of the piston ring diameter shrinkage device of the present invention, the ring diameter shrinkage assembly further includes a lifting bracket fixedly connected to the upper side of the processing frame, a lifting motor fixedly connected above the lifting bracket, a lifting screw rotatably connected to the lifting motor, a lifting nut threadedly connected to the lifting screw, the lifting nut being fixedly connected to the lifting plate, and the lifting plate being slidably connected to the lifting bracket.

[0016] As a preferred embodiment of the piston ring guide ring diameter shrinkage device of the present invention, the retaining ring guide ring assembly further includes a transmission motor fixedly connected in the processing frame, at least two spaced support blocks are fixedly connected to the processing frame, a clamping screw is rotatably connected to a plurality of support blocks, a first clamping moving block and a second clamping moving block are fixedly connected to the lower side of the first moving seat and the second moving seat respectively, the first clamping moving block and the second clamping moving block are respectively threadedly connected to the clamping screw, and the clamping screw is connected to the transmission motor.

[0017] As a preferred embodiment of the piston ring diameter shrinkage device of the present invention, wherein: a shrinkage motor is fixedly connected inside the processing frame, a shrinkage output shaft is connected to the shrinkage motor, the shrinkage output shaft is connected to a shrinkage transmission shaft via a coupling, and the shrinkage support bracket is fixedly connected to the upper side of the shrinkage transmission shaft. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 This is the front view of the present invention.

[0020] Figure 2 The three-dimensional structure of the present invention Figure 1 .

[0021] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0022] Figure 4 for Figure 2 A magnified view of a section at point B.

[0023] Figure 5 The three-dimensional structure of the present invention Figure 2 .

[0024] Figure 6 for Figure 5 A magnified view of a section at point C.

[0025] Figure 7 The three-dimensional structure of the lower half of the annular diameter shrinkage assembly. Figure 1 .

[0026] Figure 8 The three-dimensional structure of the lower half of the annular diameter shrinkage assembly. Figure 2 .

[0027] Figure 9 for Figure 8 A magnified view of a section at point D.

[0028] Figure 10 This is a three-dimensional structural diagram of the upper part of the annular diameter shrinkage assembly.

[0029] Figure 11 for Figure 10 A magnified view of a section at point E in the middle.

[0030] Figure 12This is a 3D structural diagram of the component that enables piston ring position adjustment (when the sleeve is at the receiving station).

[0031] In the diagram, 100 is the processing frame, 101 is the movable port, 200 is the sorting assembly, 201 is the fixed bracket, 202 is the guide rail, 203 is the slider, 204 is the moving driver, 205 is the moving plate, 206 is the moving rod, 207 is the sleeve, 208 is the sorting wheel, 209 is the support plate, 210 is the sliding bracket, 211 is the sorting motor, 212 is the transmission screw, 213 is the first fixed block, 214 is the second displacement sensor, 215 is the transmission motor, 216 is the second fixed block, 217 is the transmission block, 218 is the transmission nut, 300 is the ring diameter shrinkage assembly, 301 is the push-pull plate, 301a is the pulling part, 302 is the connecting shaft, 303 is the first moving seat, 304 is the first clamping moving block, 305 is the shrinkage support bracket, 306 is the first retaining ring guide rod, 307 is the lower pressing block, 307a is the lower pressing protrusion, 308 is the second retaining ring guide rod, 309 is the connecting block, 309 ... a. Release protrusion, 310. Press return spring, 311. Second moving seat, 312. Second clamping moving block, 313. Retraction motor, 314. Retraction drive shaft, 315. Lower support cylinder, 316. Clamping screw, 317. Support block, 318. Drive motor, 319. Coupling, 320. Lower linear driver, 321. Lower push-pull rod, 322. Roller, 323. Upper support cylinder, 324. Lifting screw, 325. Lifting plate, 326. Lifting bracket, 327. Lifting motor, 328. Upper pressing block, 328a. Upper pressing protrusion, 329. Intermediate connecting plate, 330. Upper push-pull rod, 331. Upper linear driver, 332. First displacement sensor, 333. Lifting nut, 334. Limit block, 400. Clamping assembly, 401. Gripper, 402. Clamping plate, 403. Clamping screw, 404. Clamping motor, 405. Clamping bracket, 500. Robotic arm. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1

[0036] Reference Figure 1 , Figure 5 , Figure 6 , Figures 9-11 This is the first embodiment of the present invention. This embodiment provides a piston ring diameter shrinkage device, which can automatically shrink the piston ring diameter to facilitate the processing of piston ring plates of different sizes and improve utilization.

[0037] A piston ring diameter shrinking device includes a processing frame 100, on which a ring diameter shrinking assembly 300 for shrinking the piston ring diameter is connected.

[0038] Specifically, the piston ring shrinkage assembly 300 includes a first movable seat 303 and a second movable seat 311 slidably connected above the processing frame 100 and capable of moving towards or away from each other. Two spaced-apart first retaining ring guide rods 306 are fixedly connected to the first movable seat 303, and two spaced-apart second retaining ring guide rods 308 are fixedly connected to the second movable seat 311. The first retaining ring guide rods 306 and the second retaining ring guide rods 308 can hold the piston rings. A shrinkage support bracket 305 is rotatably connected to the processing frame 100, located between the first movable seat 303 and the second movable seat 311. A lower support cylinder 315 for mounting the piston rings is connected to the shrinkage support bracket 305. A support cylinder 315 that can move towards or away from the lower support cylinder 315 is connected to the processing frame 100. The lower pressing block 307, which moves in the direction of the support cylinder 315, and the lifting plate 325, which can reciprocate linearly in the height direction, are connected to the lower pressing block 307. The lower pressing block 307 is movably connected to the retractable support bracket 305. The lower side of the lifting plate 325 is fixedly connected to the upper support cylinder 323, which is aligned with the lower support cylinder 315. The upper part of the piston ring can also be fitted onto the upper support cylinder 323. The lifting plate 325 is connected to the upper pressing block 328, which can move toward or away from the upper support cylinder 323. The lower pressing block 307 has several lower pressing protrusions 307a fixed at one end relative to the lower support cylinder 315 for pressing against the lower part of the piston ring. The upper pressing block 328 has several upper pressing protrusions 328a fixed at one end relative to the upper support cylinder 323 for pressing against the upper part of the piston ring.

[0039] In the initial state, the distance between the first retaining ring guide rod 306 and the second retaining ring guide rod 308 is just enough to allow the piston ring to slide downwards and fit onto the lower support cylinder 315. The piston ring with its smooth outer edge is fitted onto the lower support cylinder 315, causing the upper support cylinder 323 to descend and insert into the upper part of the piston ring. The lower pressing block 307 presses against the outer ring of the lower part of the piston ring, and the upper pressing block 328 presses against the outer circumference of the upper part of the piston ring. The first moving seat 303 and the second moving seat 311 move in opposite directions, moving away from the piston ring to a position that allows the lower pressing block 307 to rotate, causing the lower support cylinder 315 and the lower pressing block 307 to rotate. The lower pressing block 307 presses against the lower part of the piston ring, causing the lower part of the piston ring to rotate. The piston ring is fixed in place by the upper pressure block 328, preventing the upper part of the piston ring from rotating and causing the piston ring to shrink. When the piston ring shrinks to the appropriate ring diameter, the lower support cylinder 315 stops rotating. At the same time, the first moving seat 303 and the second moving seat 311 move towards each other. The first retaining ring guide rod 306 and the second retaining ring guide rod 308 hold the outer edge of the shrunken piston ring, preventing the newly shrunken piston ring from expanding outward and springing open. When the piston ring size is stable, the first moving seat 303 and the second moving seat 311 move away from each other, and the robot arm 500 on the upper side of the processing frame 100 removes the piston ring and transfers it to the next process. This invention cleverly achieves piston ring diameter shrinkage, improving the utilization rate of piston rings of different sizes. The corresponding lower support cylinder 315 and upper support cylinder 323 can be replaced according to the piston ring of different sizes.

[0040] Specifically, the annular shrinkage assembly 300 also includes a connecting block 309 movably connected to the outer side of one end of the shrinkage support bracket 305, a lower pressing block 307 fixedly connected to the upper side of the connecting block 309, and at least one connecting shaft 302 fixedly connected to the shrinkage support bracket 305. In this embodiment, two connecting shafts 302 are fixedly connected to the shrinkage support bracket 305. The connecting block 309 can slide along the connecting shaft 302 outside the shrinkage support bracket 305. A pressing return spring 310 is fixedly connected to the connecting shaft 302, and the side of the pressing return spring 310 away from the outer end of the connecting shaft 302 is fixedly connected to the connecting block 309. A lower linear actuator 320 is fixedly connected to the processing frame 100, and a lower push-pull rod 321 capable of reciprocating linear motion in the horizontal direction is connected to the lower linear actuator 320. A push-pull plate 301 is fixedly connected to one end of the retractable support bracket 305. A pulling part 301a is fixed to the upper side of the push-pull plate 301 away from the lower push-pull rod 321. A loosening protrusion 309a is fixed to the lower side of the connecting block 309 to loosen the piston ring by the lower pressing block 307. When the piston ring is fitted into the lower support cylinder 315, the lower pressing block 307 presses against the outer periphery of the lower part of the piston ring under the action of the pressing and restoring spring 310. At this time, the pulling part 301a is between the loosening protrusion 309a and the retractable support bracket 305. At least one limiting block 334 is fixedly connected to the upper side of the upper support cylinder 323. In this embodiment, two limiting blocks 334 are fixedly connected to the upper side of the upper support cylinder 323. The two limiting blocks 334 are symmetrically arranged about the center of the upper support cylinder 323. The outer end of the limiting block 334 extends beyond the position of the outer side of the piston ring.

[0041] When a piston ring is conveyed from the previous ring-sorting process and fitted onto the lower support cylinder 315, the lower linear drive is activated, causing the lower push-pull rod 321 to retract. The lower push-pull rod 321 drives the pulling part 301a to move away from the lower support cylinder 315. When the pulling part 301a abuts against the release protrusion 309a, it drives the release protrusion 309a to move away from the lower support cylinder 315, further compressing the return spring 310. When the lower pressing block 307 leaves the lower support cylinder 315 to the set position, the lower linear drive 320 stops. When the piston ring is conveyed from the previous ring-sorting station, the first moving seat 303 and the second moving seat 311 are controlled to move towards each other, so that the inner edges of the first retaining ring guide rod 306 and the second retaining ring guide rod 308 are just within reach. The piston ring is slid down along the inner edge of the first retaining ring guide rod 306 and the second retaining ring guide rod 308, and vertically fitted onto the lower support cylinder 315. The lower linear actuator 320 reverses its action, and the pulling part 301a moves toward the direction of the lower support cylinder 315. The lower pressing block 307 moves toward the direction of the lower support cylinder 315 under the action of the pressing return spring 310. When the release protrusion 309a can no longer contact the pulling part 301a, the lower pressing protrusion 307a presses against the piston ring, causing the first retaining ring guide rod 306 and the second retaining ring guide rod 308 to move away from the piston ring to a suitable position, making room for the lower pressing block 307 and other components to rotate. During contraction, the lower pressing protrusion 307a keeps the piston ring pressed tightly against the lower support cylinder 315 under the action of the pressing return spring 310.

[0042] Specifically, an upper linear actuator 331 is fixedly connected to the lower side of the lifting plate 325. An upper push-pull rod 330 that can perform reciprocating linear motion in the horizontal direction is connected to the upper linear actuator 331. An intermediate connecting plate 329 is fixedly connected to one end of the upper push-pull rod 330 relative to the upper support cylinder 323. An upper pressing block 328 is fixedly connected to the intermediate connecting plate 329.

[0043] During operation, the lifting plate 325 is lowered. When the upper support cylinder 323 is inserted into the upper part of the piston ring to a suitable position, the lifting plate 325 stops lowering. The upper linear actuator 331 is controlled to move, causing the upper push-pull rod 330 to move in the direction of the piston ring. When the upper pressing block 328 presses against the piston ring, the upper linear actuator 331 stops moving. At this time, the lower support cylinder 315 is rotated, and the lower support cylinder 315 drives the lower pressing block 307 and other components to rotate synchronously.

[0044] Specifically, a first displacement sensor 332 is fixedly connected to the lifting plate 325 below the lower pressing block 307.

[0045] In this embodiment, both the upper linear actuator 331 and the lower linear actuator 320 are preferably cylinders. When the upper support cylinder 323 is not inserted into the piston ring, the distance sensed by the first displacement sensor 332 is the distance between the first displacement sensor 332 and the upper support cylinder 323. When the upper support cylinder 323 is inserted into the piston ring, the first displacement sensor 332 sends a signal indicating that the distance has decreased and sends it to an external controller. The controller controls the duration of the lifting plate 325 from this moment. When the set time threshold is reached, the lifting plate 325 stops descending. At this time, the upper pressing block 328 is aligned with the outermost ring of the piston ring. The controller controls the upper linear actuator 331 to move, causing the upper pressing block 328 to move in the direction of the piston ring. When the upper pressing block 328 presses against the piston ring, the upper linear actuator 331 stops moving, preparing for the piston ring to retract. When the retraction ends, the upper linear actuator 331 reverses its movement, the upper pressing block 328 moves away from the piston ring to a suitable position, and the upper linear actuator 331 stops moving.

[0046] Example 2

[0047] Reference Figures 7-11 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment and can further realize the piston ring diameter shrinkage action.

[0048] Specifically, the annular diameter shrinkage assembly 300 also includes a lifting bracket 326 fixedly connected to the upper side of the processing frame 100. A lifting motor 327 is fixedly connected above the lifting bracket 326. A lifting screw 324 is rotatably connected to the lifting motor 327 and the lifting screw 324. A lifting nut 333 is threadedly connected to the lifting screw 324. The lifting nut 333 is fixedly connected to the lifting plate 325. The lifting plate 325 is slidably connected to the lifting bracket 326.

[0049] When the upper pressing block 328 needs to be raised or lowered, the lifting motor 327 is activated, the lifting screw 324 rotates, and the lifting screw 324 drives the lifting plate 325 to move via the lifting nut 333, controlling the direction of the lifting motor 327 so that the upper pressing block 328 is raised or lowered to the appropriate position, and the lifting motor 327 stops. When the first displacement sensor 332 senses a signal that the distance has decreased, the controller controls the lifting motor 327 to continue to operate. When the operation time reaches the set time threshold, the lifting motor 327 stops, and the upper pressing block 328 is aligned with the outermost ring of the piston ring. When the contraction ends, the lifting motor 327 reverses its operation, the lifting plate 325 rises to the appropriate position, and the lifting motor 327 stops.

[0050] Specifically, the retaining ring guide ring assembly also includes a drive motor 318 fixedly connected within the processing frame 100. At least two spaced support blocks 317 are fixedly connected to the processing frame 100. Clamping screws 316 are rotatably connected to several support blocks 317. A first clamping moving block 304 and a second clamping moving block 312 are fixedly connected to the lower sides of the first moving seat 303 and the second moving seat 311, respectively. The first clamping moving block 304 and the second clamping moving block 312 are threadedly connected to the clamping screws 316, and the clamping screws 316 are connected to the drive motor 318.

[0051] When the position of the retaining ring guide rod needs to be adjusted, the drive motor 318 is activated, the clamping screw 316 rotates, and the clamping screw 316 drives the first moving seat 303 and the second moving seat 311 to move. The first moving seat 303 and the second moving seat 311 respectively drive the first retaining ring guide rod 306 and the second retaining ring guide rod 308 to move. When the first retaining ring guide rod 306 and the second retaining ring guide rod 308 move to the appropriate position, the drive motor 318 stops operating.

[0052] Specifically, a shrink motor 313 is fixedly connected inside the processing frame 100. A shrink output shaft is connected to the shrink motor 313. The shrink output shaft is connected to a shrink transmission shaft 314 via a coupling 319. A shrink support bracket 305 is fixedly connected to the upper side of the shrink transmission shaft 314. A roller 322 is rotatably connected to the lower pressure block 307. The lower edge of the roller 322 contacts the upper side of the shrink support bracket 305.

[0053] When the upper pressing block 328 and the lower pressing block 307 press the uppermost and lowermost parts of the piston ring against the upper support cylinder 323 and the lower support cylinder 315 respectively, preparation for the retraction operation is initiated. The retraction motor 313 is activated, and the retraction output shaft rotates. The retraction output shaft drives the lower support cylinder 315 to rotate via the retraction transmission shaft 314. The lower support cylinder 315 drives the lower part of the piston ring to rotate, while the upper part of the piston ring remains stationary. When the piston ring diameter retracts to the appropriate size, the retraction motor 313 stops operating, controlling the transmission... When motor 318 is activated, the first retaining ring guide rod 306 and the second retaining ring guide rod 308 move toward each other. When the first retaining ring guide rod 306 and the second retaining ring guide rod 308 clamp the piston ring, the drive motor 318 stops operating. After the piston ring diameter is fixed, the drive motor 318 reverses its operation, causing the first retaining ring guide rod 306 and the second retaining ring guide rod 308 to move away from each other, releasing the piston ring. The piston ring is then removed by the robot arm 500 on the processing rack 100 and transferred to the next process.

[0054] When it is necessary to shrink piston rings of different sizes, simply replace the upper support cylinder 323 and the lower support cylinder 315 with different specifications to facilitate the processing of piston ring plates of different specifications.

[0055] Example 3

[0056] Reference Figures 2-4 and Figure 12 This is the third embodiment of the present invention. This embodiment is based on the first two embodiments and can realize the preparation of piston rings before the shrinkage process.

[0057] Specifically, the processing rack 100 is connected to a sorting component 200 for sorting piston rings to make the inner and outer edges of the piston rings flat, and a robot arm 500 for transferring the piston rings from the sorting station to the diameter reduction station. The robot arm 500 is prior art, and its specific structure is not described in detail. The end of the robot arm 500 is equipped with a clamping component 400 for clamping the piston rings.

[0058] Specifically, the finishing component 200 includes a fixed bracket 201 fixedly connected to the upper side of the processing frame 100. Two movable actuators 204, spaced apart in the height direction, are fixedly connected to the fixed bracket 201. A movable rod 206, capable of reciprocating linear movement in the left-right direction, is connected to each movable actuator 204. A movable plate 205, slidably connected to the fixed bracket 201, is connected to the movable rod 206. A support shaft is connected to the movable plate 205, and a finishing wheel 208 is rotatably connected to the support shaft. A sliding bracket 210, capable of reciprocating linear movement in the front-back direction, is slidably connected to the processing frame 100 to the right of the finishing wheel 208. A vertically arranged rotating shaft is rotatably connected to the sliding bracket 210, and a support plate 209 is fixedly connected to the upper end of the rotating shaft. A sleeve 207 for fitting piston rings is fixedly connected to the upper side of the support plate 209. The processing frame 100 has an opening that allows the lower part of the sliding bracket 210 to extend downwards into the processing frame 100. The upper sides of the processing racks 100 on both sides of the opening 101 are fixedly connected to guide rails 202, and sliders 203 are slidably connected to the guide rails 202. The upper part of the sliding bracket 210 is fixedly connected to the upper side of the slider 203. Inside the processing rack 100, a sorting motor 211, a conveying motor 215, and a first fixing block 213 and a second fixing block 216 spaced apart in the front-back direction are fixedly connected. The sorting motor 211 is connected to the rotating shaft. The first fixing block 213 and the second fixing block 216 are rotatably connected to the transmission screw 212. The transmission screw 212 is threadedly connected to the transmission nut 218. The transmission nut 218 is fixedly connected to the transmission block 217. The transmission block 217 is fixedly connected to the sliding bracket 210. The transmission screw 212 is connected to the conveying motor 215. A second displacement sensor 214 for detecting whether a piston ring is fitted on the sleeve 207 is fixedly connected to the sliding bracket 210 on the upper side of the support plate 209.

[0059] Before shrinking the ring diameter, the piston rings delivered need to be tidied up to ensure that their inner and outer edges are flat. Initially, the sleeve 207 is positioned in front of the movable port 101, where it receives the material. The delivered piston rings slide directly down and fit onto the sleeve 207. The second displacement sensor 214 detects a decrease in distance and sends the detected distance signal to the external controller in real time. When the controller receives the signal indicating a decrease in distance, it means that a piston ring has been fitted onto the sleeve 207. The controller then controls the conveyor motor 215 to operate, causing the transmission screw 212 to rotate. The conveyor nut 218 drives the sliding bracket 210 to move. When the piston ring reaches the set position, the conveyor motor 215 stops, the piston ring aligns with the tidying wheel 208, and the movement driver 204 actuates, causing the moving rod 206 to move in the direction of the piston ring. The moving rod 206... The moving plate 205 drives the sorting wheels 208 to move. When the two sorting wheels 208 press the upper and lower parts of the piston ring onto the sleeve 207 respectively, the moving drive 204 stops, the sorting motor 211 starts, the rotating shaft rotates, the rotating shaft drives the sleeve 207 to rotate, the sleeve 207 drives the piston ring to rotate, and the sorting wheels 208 straighten the overlapping parts of the upper and lower ends of the piston ring, so that there is no overlap between the adjacent layers at the upper and lower ends of the piston ring, and the inner and outer rings are flat. When the set sorting time threshold is reached, the sorting motor 211 stops, controls the moving drive 204 to move in the opposite direction, so that the sorting wheels 208 leave the piston ring and reset, and the moving drive 204 stops. Thus, the piston ring is sorted. After sorting, the piston ring is clamped by the clamping component 400 in the robot arm 500, and the robot arm 500 transfers the piston ring to the lower support cylinder 315 in the ring diameter shrinkage component 300.

[0060] Specifically, the clamping assembly 400 includes a clamping bracket 405 fixedly connected to the end of the robot arm 500. A clamping motor 404 is fixedly connected to the clamping bracket 405. A clamping screw 403 is rotatably connected to the clamping bracket 405. The clamping screw 403 and the clamping motor 404 are connected in a transmission connection. A clamping plate 402 that can move in opposite directions is threadedly connected to the clamping screw 403. A gripper 401 that clamps the two ends of the piston ring is fixedly connected to one side of the two clamping plates 402 that are arranged opposite to each other.

[0061] After the piston ring arrangement is completed, the robot arm 500 is activated, causing the two grippers 401 to move to the piston ring position on the sleeve 207. With the piston ring between the two grippers 401, the clamping motor 404 is activated, rotating the clamping screw 403, causing the two grippers 401 to move towards each other and clamp the piston ring. The robot arm 500 then moves the clamping assembly 400 upwards away from the sleeve 207, and rotates it to the ring diameter shrinkage position. When the piston ring is transferred above the lower support cylinder 315, the clamping motor 404 reverses its direction, causing the grippers 401 to release the piston ring. The piston ring then fits along the inner edge of the first retaining ring guide rod 306 and the second retaining ring guide rod 308 onto the... On the lower support cylinder 315; after the ring diameter shrinkage is completed, the first retaining ring guide rod 306 and the second retaining ring guide rod 308 move away from the piston ring. Control the robot arm 500 to move, so that the two grippers 401 are aligned with the piston ring. The robot arm 500 stops moving, and control the clamping motor 404 to move, so that the two grippers 401 move towards each other and clamp the piston ring. The robot arm 500 moves the clamping assembly 400 upward, and the piston ring leaves the lower support cylinder 315. The robot arm 500 transfers the shrunken piston ring to the next station, ready to transfer the next new shrunken piston ring. Repeat the above actions to complete the automated shrunken piston ring and ring diameter shrinkage work.

[0062] In this application, the direction is defined with reference to the front view, and the direction perpendicular to the paper is the front-back direction.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A piston ring diameter shrinkage device, characterized in that: include, Processing rack (100); The piston ring shrinkage assembly (300) includes a first movable seat (303) and a second movable seat (311) slidably connected above the processing frame (100) and capable of moving towards or away from each other. Two spaced-apart first retaining ring guide rods (306) are fixedly connected to the first movable seat (303), and two spaced-apart second retaining ring guide rods (308) are fixedly connected to the second movable seat (311). The first retaining ring guide rods (306) and the second retaining ring guide rods (308) can hold the piston rings. A shrinkage support bracket (305) is rotatably connected to the processing frame (100), located between the first movable seat (303) and the second movable seat (311). The upper part is connected to a lower support cylinder (315) for fitting piston rings. The processing frame (100) is connected to a lower pressing block (307) that can move toward or away from the lower support cylinder (315) and a lifting plate (325) that can reciprocate linearly in the height direction. The lower pressing block (307) is movably connected to the retractable support bracket (305). The lower side of the lifting plate (325) is fixedly connected to an upper support cylinder (323) that is aligned with the lower support cylinder (315). The upper part of the piston ring can also be fitted onto the upper support cylinder (323). The lifting plate (325) is connected to an upper pressing block (328) that can move toward or away from the upper support cylinder (323).

2. The piston ring diameter shrinkage device as described in claim 1, characterized in that: The annular shrinkage assembly (300) further includes a connecting block (309) movably connected to the outer side of one end of the shrinkage support bracket (305). The lower pressing block (307) is fixedly connected to the upper side of the connecting block (309). At least one connecting shaft (302) is fixedly connected to the shrinkage support bracket (305). The connecting block (309) can slide along the connecting shaft (302) outside the shrinkage support bracket (305). A pressing return spring (310) is fixedly connected to the connecting shaft (302). The side of the pressing return spring (310) away from the outer end of the connecting shaft (302) is fixedly connected to the connecting block (309).

3. The piston ring diameter shrinkage device as described in claim 2, characterized in that: A lower linear actuator (320) is fixedly connected to the processing frame (100). A lower push-pull rod (321) capable of reciprocating linear motion in the horizontal direction is connected to the lower linear actuator (320). A push-pull plate (301) is fixedly connected to one end of the lower push-pull rod (321) relative to the retractable support bracket (305). A pulling part (301a) is fixed on the upper side of the push-pull plate (301) away from the lower push-pull rod (321). A release protrusion (309a) for releasing the piston ring by the lower pressing block (307) is fixed on the lower side of the connecting block (309). When the piston ring is fitted into the lower support cylinder (315), the lower pressing block (307) presses against the outer periphery of the lower part of the piston ring under the action of the pressing return spring (310). At this time, the pulling part (301a) is between the release protrusion (309a) and the retractable support bracket (305).

4. The piston ring diameter shrinkage device as described in claim 3, characterized in that: At least one limiting block is fixedly connected to the upper side of the upper support cylinder (323), and the outer end of the limiting block extends beyond the position of the outer side of the piston ring.

5. The piston ring diameter shrinkage device according to any one of claims 1 to 4, characterized in that: The lower side of the lifting plate (325) is fixedly connected to an upper linear actuator (331), and the upper linear actuator (331) is connected to an upper push-pull rod (330) that can perform reciprocating linear motion in the horizontal direction. The upper push-pull rod (330) is fixedly connected to an intermediate connecting plate (329) at one end relative to the upper support cylinder (323), and the upper pressing block (328) is fixedly connected to the intermediate connecting plate (329).

6. The piston ring diameter shrinkage device as described in claim 5, characterized in that: A first displacement sensor (332) is fixedly connected to the lifting plate (325) below the lower pressing block (307).

7. The piston ring diameter shrinkage device according to any one of claims 1 to 4, characterized in that: The annular diameter shrinkage assembly (300) also includes a lifting bracket (326) fixedly connected to the upper side of the processing frame (100). A lifting motor (327) is fixedly connected above the lifting bracket (326). A lifting screw (324) rotatably connected to the lifting bracket (326) is connected to the lifting motor (327). A lifting nut (333) is threaded onto the lifting screw (324). The lifting nut (333) is fixedly connected to the lifting plate (325). The lifting plate (325) is slidably connected to the lifting bracket (326).

8. The piston ring diameter shrinkage device according to any one of claims 1 to 4, characterized in that: The annular diameter shrinkage assembly (300) also includes a drive motor (318) fixedly connected in the processing frame (100). At least two spaced support blocks (317) are fixedly connected to the processing frame (100). Clamping screws (316) are rotatably connected to a plurality of support blocks (317). A first clamping moving block (304) and a second clamping moving block (312) are fixedly connected to the lower side of the first moving seat (303) and the second moving seat (311), respectively. The first clamping moving block (304) and the second clamping moving block (312) are threadedly connected to the clamping screws (316), and the clamping screws (316) are connected to the drive motor (318).

9. The piston ring diameter shrinkage device according to any one of claims 1 to 4, characterized in that: A shrink motor (313) is fixedly connected inside the processing frame (100). A shrink output shaft is connected to the shrink motor (313). The shrink output shaft is connected to a shrink transmission shaft (314) via a coupling (319). The shrink support bracket (305) is fixedly connected to the upper side of the shrink transmission shaft (314).

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