CN212169514U - Piston clamp spring assembling device - Google Patents

Abstract

The utility model discloses a piston jump ring assembly device, include: the bearing table is used for bearing and positioning the piston; the positioning table is provided with a positioning hole which is divided into a circle contracting part positioned at the front part and a circle stabilizing part positioned at the rear part; the hole diameter of the circle reducing part is gradually reduced from front to back along the axial direction of the positioning hole, and the hole diameter of the constant circle part is not changed; the material pushing device comprises a material pushing shaft and a front ejection shaft, the material pushing shaft can move back and forth, the material pushing shaft is used for pushing the clamp spring into the constant circle part from the front end of the circle shrinking part along the axial direction of the positioning hole, and one end, close to the positioning table, of the front ejection shaft is provided with a front limiting part; and the matching device comprises a rear ejection shaft capable of moving back and forth, and one end of the rear ejection shaft, which is close to the positioning table, is provided with a rear limiting part.

Description

Piston clamp spring assembling device

Technical Field

The utility model relates to a piston technical field, concretely relates to piston jump ring assembly device.

Background

The piston has a piston pin hole, the piston pin is a cylindrical pin installed in the piston pin hole, the middle part of the piston pin penetrates through the connecting rod small end hole to connect the piston and the connecting rod, and the function of the piston is to transmit the gas acting force born by the piston to the connecting rod or to enable the connecting rod small end to drive the piston to move together.

The piston snap spring is arranged in the piston pin hole and is used for preventing the piston pin from axially moving.

The jump ring is assembled into the piston in a manual mode in the prior art, so that the precision is poor, the efficiency is low, and the production beat cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model provides a piston jump ring assembly device can overcome above-mentioned problem.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a piston clamp spring assembly device, comprising:

the bearing table is used for bearing and positioning the piston;

the positioning table is provided with a positioning hole which is divided into a circle contracting part positioned at the front part and a circle stabilizing part positioned at the rear part; the hole diameter of the circle reducing part is gradually reduced from front to back along the axial direction of the positioning hole, and the hole diameter of the constant circle part is not changed;

the material pushing device comprises a material pushing shaft and a front ejection shaft, the material pushing shaft can move back and forth, the material pushing shaft is used for pushing the clamp spring into the constant circle part from the front end of the circle shrinking part along the axial direction of the positioning hole, and one end, close to the positioning table, of the front ejection shaft is provided with a front limiting part;

the matching device comprises a rear ejection shaft capable of moving back and forth, and one end of the rear ejection shaft, which is close to the positioning table, is provided with a rear limiting part;

the front ejection shaft and the rear ejection shaft extend into the constant circle part and clamp the clamp spring, so that the rear limiting part and the front limiting part can limit radial expansion of the clamp spring together; the front ejection shaft and the rear ejection shaft convey the clamped clamp springs to the position of a clamp spring groove in the piston pin hole, and the rear ejection shaft moves backwards, so that the clamp springs can be radially expanded to enter the clamp spring groove.

Furthermore, a magnetic round rod is fixedly arranged at one end, close to the positioning table, of the material pushing shaft, a plurality of sliding blocks are fixedly arranged on the circumferential surface of the magnetic round rod, and the sliding blocks extend outwards along the radial direction of the magnetic round rod; the peripheral surface of the positioning hole is provided with sliding grooves which are in one-to-one correspondence with the sliding blocks, the sliding grooves extend outwards along the radial direction of the positioning hole, and the long edge direction of each sliding groove is parallel to the axial direction of the positioning hole; and one end of the sliding block, which is close to the positioning table, is fixedly provided with a claw, the claw extends out of the plane of the end face of the magnetic round rod, which is close to the positioning table, and the inner surfaces of the claws form a clamping surface for limiting the radial outward expansion of the clamp spring.

Furthermore, the front ejection shaft is provided with an end surface close to one end of the positioning table, the inner side of the front ejection shaft is fixedly provided with an opposite center shaft which protrudes outwards, and the outer side of the front ejection shaft is fixedly provided with a front ring which protrudes outwards; the end face of the front ejection shaft close to the positioning table and the end face of the front ring are in arc transition, and the front limit part is formed by the end face of the front ejection shaft close to the positioning table, the outer surface of the centering shaft and the inner surface of the front ring in a surrounding mode.

Furthermore, the rear ejection shaft is provided with an end face close to one end of the positioning table, the inner side of the rear ejection shaft is provided with a centering hole which is concave inwards and matched with the centering shaft for centering and positioning, and the outer side of the rear ejection shaft is fixedly provided with a rear ring which is convex outwards; the end surface of the rear ejection shaft close to the positioning table and the end surface of the rear ring are in arc transition, and the rear limiting part is formed between the end surface of the rear ejection shaft close to the positioning table and the inner surface of the rear ring in a surrounding mode.

Further, the circumference surface symmetry of permanent circle portion is provided with two through-holes, the bench symmetry of location is provided with two infrared detection device, infrared detection device include with location platform fixed connection's detection support and set firmly the infrared detector on the detection support, the infrared ray that one side infrared detector launches can pass two through-holes in proper order and reach the receiving part of opposite side infrared detector.

Furthermore, the material pushing device comprises a bottom plate, a first linear module and a second linear module, wherein the first linear module is fixedly arranged on the upper surface of the bottom plate and is arranged along the front-back direction, the second linear module is fixedly connected with the working part of the first linear module and is arranged along the left-right direction, and the material pushing shaft and the front ejection shaft are fixedly connected with the working part of the second linear module; the axial line of the material pushing shaft, the axial line of the front ejection shaft and the axial line of the rear ejection shaft are positioned on the same horizontal plane.

Furthermore, a positioning table support is fixedly arranged on the upper surface of the bottom plate, the positioning table is fixedly arranged on the upper surface of the positioning table support, and the axis of the positioning hole and the axis of the material pushing shaft are located on the same horizontal plane.

Furthermore, the matching device comprises a matching support and a third linear module which is fixedly arranged on the matching support and arranged along the front-back direction, and the rear ejection shaft is fixedly connected with the working part of the third linear module.

Further, still include loading attachment, loading attachment includes the fourth sharp module that sets up along the left and right sides direction, the plummer includes plummer body and sets firmly in the upper surface of plummer body and be used for the locating piece of location piston with the work portion fixed connection of fourth sharp module.

Further, still include centering device, centering device includes centering support, sets firmly in centering support upper surface and along the cylinder of fore-and-aft direction setting and with the centering rod of the expansion end fixed connection of cylinder.

Compared with the prior art, the utility model has the advantages that:

1. through the cooperation of the material pushing shaft, the front ejection shaft and the rear ejection shaft, the clamp spring can be sent into the piston, the clamp spring enters the clamp spring groove by means of the elastic restoring force of the clamp spring, automatic assembly of the clamp spring is achieved, the installation precision can be improved, operating personnel are reduced, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is a schematic structural diagram of a first linear module according to the present invention;

FIG. 3 is a schematic structural view of the material pushing shaft of the present invention ready to enter the positioning hole;

fig. 4 is a schematic structural view of the front ejection shaft of the present invention ready to enter the positioning hole;

fig. 5 is a schematic structural view of the material pushing shaft of the present invention;

fig. 6 is a schematic structural view of the clamp spring of the present invention mounted on the pushing shaft;

fig. 7 is a schematic structural view of the snap spring of the present invention pushed into the constant circle portion;

fig. 8 is a schematic structural view of the positioning table of the present invention;

FIG. 9 is a cross-sectional view of FIG. 7;

fig. 10 is a cross-sectional view of the positioning table of the present invention;

fig. 11 is a schematic structural view of the front ejector shaft of the present invention;

fig. 12 is a schematic structural view of the rear ejection shaft of the present invention;

fig. 13 is a schematic structural view of the clamping and position-limiting snap spring of the front ejection shaft and the rear ejection shaft of the present invention;

fig. 14 is the structure diagram of the clamp spring slot department is transported with the clamp spring to preceding ejecting axle and back ejecting axle of the utility model.

Detailed Description

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-14, a piston clamp spring assembly device includes:

a carrier 120 for carrying and positioning the piston 20;

a positioning table 310 on which a positioning hole 311 is provided, the positioning hole being divided into a rounded portion 311-1 at the front and a constant-rounded portion 311-2 at the rear; the hole diameter of the circle reducing part is gradually reduced from front to back along the axial direction of the positioning hole, and the hole diameter of the constant circle part is not changed;

the material pushing device 200 comprises a material pushing shaft 240 and a front ejection shaft 250, wherein the material pushing shaft 240 and the front ejection shaft 250 can move back and forth, the material pushing shaft is used for pushing the snap spring from the front end of the round shrinking portion 311-1 to the constant round portion 311-2 along the axial direction of the positioning hole, and one end, close to the positioning table 310, of the front ejection shaft 250 is provided with a front limiting portion 252;

the matching device 400 comprises a rear ejection shaft 430 capable of moving back and forth, and one end of the rear ejection shaft close to the positioning table is provided with a rear limiting part 432;

the front ejection shaft and the rear ejection shaft extend into the constant circle part and clamp the clamp spring 10, so that the rear limiting part and the front limiting part can limit radial expansion of the clamp spring together; the front ejection shaft and the rear ejection shaft convey the clamped clamp springs to the position of a clamp spring groove 21 in the piston pin hole, and the rear ejection shaft moves backwards, so that the clamp springs can be radially expanded to enter the clamp spring groove.

Through the cooperation of the material pushing shaft, the front ejection shaft and the rear ejection shaft, the clamp spring can be sent into the piston, the clamp spring enters the clamp spring groove by means of the elastic restoring force of the clamp spring, automatic assembly of the clamp spring is achieved, the installation precision can be improved, operating personnel are reduced, and the production efficiency is improved.

As shown in fig. 1, 5 and 8, a magnetic round bar 241 is fixedly arranged at one end of the material pushing shaft 240 close to the positioning table, and a plurality of sliding blocks 242 are fixedly arranged on the circumferential surface of the magnetic round bar and extend outwards along the radial direction of the magnetic round bar; the circumferential surface of the positioning hole 311 is provided with sliding grooves 312 corresponding to the sliding blocks one by one, the sliding grooves extend outwards along the radial direction of the positioning hole, and the long side direction of the sliding grooves is parallel to the axial direction of the positioning hole; and a plurality of claws 243 are fixedly arranged at one end of the sliding block 242 close to the positioning table, extend out from the plane of the end surface of the magnetic round rod close to the positioning table 310, and form clamping surfaces 244 for limiting the radial outward expansion of the clamp spring on the inner surfaces of the claws.

As shown in fig. 6, before the snap springs are assembled, the single snap spring needs to be separated first, either manually or automatically, and the separated single snap spring needs to be installed in the claw; because the jump ring has the opening, so its internal diameter can reduce its internal diameter through the mode that compresses tightly to with it card income jack catch, the clamp face of a plurality of jack catches retrains the jump ring, can fix the jump ring through the tight contact of clamp between clamp face and the jump ring.

The magnetic round rod has certain magnetism, can generate certain attraction to the clamp spring, and avoids the clamp spring from falling.

The sliding blocks on the pushing shaft correspond to the sliding grooves on the positioning hole one by one, so that the pushing shaft can smoothly enter the positioning hole, and as the inner diameter of the front part of the positioning hole is gradually reduced, the radius of the clamp spring is gradually reduced along with the pushing of the pushing shaft, and the clamp spring finally enters the constant-circle part, and the diameter of the clamp spring is the same as that of the constant-circle part; after the radius of the clamp spring is reduced, the clamping surface is not contacted with the outer surface of the clamp spring any more, the clamp spring is tightly contacted with the surface of the constant circular part due to the elastic restoring force of the clamp spring, the magnetic force round rod is weak in magnetism, the material pushing shaft is moved out of the positioning hole, and the clamp spring stays in the constant circular part and cannot be separated along with the material pushing shaft.

The sliding grooves are formed in the surfaces of the positioning holes, because the sliding blocks are arranged on the pushing shafts and extend outwards along the radial direction of the pushing shafts, in order to ensure that the pushing shafts can smoothly enter the positioning holes, the sliding blocks and the sliding grooves need to be in one-to-one correspondence; the sliding block is arranged on the pushing shaft, because the inner diameter of the clamping spring is larger before the clamping spring enters the positioning hole, the sliding block which protrudes outwards needs to be arranged on the surface of the pushing shaft, so that the clamping surface can be matched with the size of the clamping spring; and in order to ensure that the clamp springs do not leave together when the material pushing shaft exits the positioning hole, the clamp springs are required to be tightly contacted with the surface of the constant circular part in the constant circular part, and the effect can be achieved only by enabling the sliding blocks to extend into the radial inner part of the surface of the positioning hole.

As shown in fig. 11, the front ejecting shaft 250 has an end surface near one end of the positioning table 310, and has an inward protruding centering shaft 251 and an outward protruding front ring 253; the end surface of the front ejection shaft close to the positioning table and the end surface of the front ring are in arc transition, and the front limit part 252 is formed by the end surface of the front ejection shaft close to the positioning table, the outer surface of the centering shaft and the inner surface of the front ring in a surrounding mode.

As shown in fig. 12, an end surface of the rear ejection shaft 430 near one end of the positioning table 310 is provided with an inward recessed centering hole 431 at an inner side thereof for centering and positioning in cooperation with the centering shaft 251, and an outward protruding rear ring 433 is fixedly provided at an outer side thereof; the end surface of the rear ejection shaft close to the positioning table and the end surface of the rear ring are in arc transition, and the rear limiting part 432 is formed between the end surface of the rear ejection shaft close to the positioning table and the inner surface of the rear ring in a surrounding mode.

As shown in fig. 13, after the circlip enters the constant round part, the front ejection shaft and the rear ejection shaft need to be matched, and then the circlip is sent into the piston pin hole: the front ejection shaft and the rear ejection shaft respectively enter the positioning holes from two sides of the clamp spring, the centering shaft of the front ejection shaft is matched and centered with the centering hole of the rear ejection shaft, and the clamp spring is clamped between the front limiting part and the rear limiting part; after the clamp spring is clamped between the front limiting part and the rear limiting part, the radial expansion of the clamp spring can be limited by the cooperation of the front limiting part and the rear limiting part, so that the radial size of the clamp spring cannot be changed even if the clamp spring leaves the constant-circle part.

As shown in fig. 14, the front ejection shaft and the rear ejection shaft move backwards to keep the front ejection shaft and the rear ejection shaft in a state of clamping the snap spring, and the snap spring is sent to the position of the snap spring groove in the piston pin hole, so that the rear ejection shaft moves backwards, the snap spring loses the limiting effect of the rear limiting part, the radial size of the snap spring is suddenly increased, the snap spring is bounced into the snap spring groove, the assembly of the snap spring is completed, and the front ejection shaft can move forwards out of the positioning hole.

In order to achieve the effect, the width of the front ring and the width of the rear ring should not exceed the thickness of half of the clamp spring, so that the radial limit of the clamp spring can be guaranteed to be required to pass through the combined action of the front limit part and the rear limit part, the clamp spring cannot be clamped into the front limit part or the rear limit part, and the process stability of clamp spring assembly is improved.

As shown in fig. 8 and 10, two through holes 313 are symmetrically formed in the circumferential surface of the constant circular portion 311-2, two infrared detection devices are symmetrically arranged on the positioning table 310, each infrared detection device includes a detection support 321 fixedly connected to the positioning table and an infrared detector 322 fixedly arranged on the detection support, and infrared rays emitted by the infrared detector on one side can sequentially pass through the two through holes and reach a receiving portion of the infrared detector on the other side.

When not having the jump ring in the permanent circle portion, the infrared ray that infrared detector transmitted can not be blocked, when having the jump ring in the permanent circle portion, infrared detector transmitted infrared ray can be blocked, can judge whether to have the material in the permanent circle portion through this kind of mode, if do not have the material and can stop the equipment action, avoids the production of invalid action, has improved production efficiency.

It is conventional in the art to use an infrared detector to determine whether material is present.

As shown in fig. 1 and 2, the material pushing device 200 includes a bottom plate 210, a first linear module 220 fixedly disposed on an upper surface of the bottom plate and arranged along a front-back direction, and a second linear module 230 fixedly connected to a working portion of the first linear module and arranged along a left-right direction, wherein the material pushing shaft 240 and the front ejection shaft 250 are fixedly connected to a working portion of the second linear module; the axial line of the material pushing shaft, the axial line of the front ejection shaft and the axial line of the rear ejection shaft 430 are positioned on the same horizontal plane.

The first linear module can drive the second linear module to move in the front-back direction, the second linear module can drive the front ejection shaft and the material pushing shaft to move in the left-right direction, namely the material pushing shaft and the front ejection shaft can move in the front-back direction, the left-right direction and the right-left direction, so that the material pushing shaft and the front ejection shaft can complete feeding work.

As shown in fig. 3 and 4, when the spring is required to be pushed into the constant circle part by the pushing shaft, the second linear module moves leftwards, and the axis of the pushing shaft is overlapped with the axis of the positioning hole; when the front ejection shaft is required to enter the positioning hole, the second linear module moves rightwards, and the axes of the front ejection shaft and the positioning hole are overlapped.

As shown in fig. 1, a positioning table bracket 330 is fixedly disposed on the upper surface of the bottom plate 210, the positioning table 310 is fixedly mounted on the upper surface of the positioning table bracket, and the axis of the positioning hole 311 and the axis of the pushing shaft 240 are located on the same horizontal plane.

The axis of the material pushing shaft, the axis of the front ejection shaft, the axis of the rear ejection shaft and the axis of the positioning hole are on the same horizontal plane, so that the devices do not need to consider the problem of up-and-down movement, the arrangement of moving parts can be reduced, and the assembly efficiency and the equipment stability are improved.

As shown in fig. 1 and 2, the matching device includes a matching bracket 410, and a third linear module 420 fixedly disposed on the matching bracket and arranged along the front-rear direction, and the rear ejection shaft 430 is fixedly connected to a working portion of the third linear module.

The third linear module can drive the rear ejection shaft to move in the front-rear direction.

As shown in fig. 1 and 2, the device further includes a feeding device 100, the feeding device includes a fourth linear module 110 disposed along the left-right direction, the bearing table 120 is fixedly connected to the working portion of the fourth linear module, and the bearing table includes a bearing table body and a positioning block 130 fixedly disposed on the upper surface of the bearing table body and used for positioning the piston.

As shown in fig. 1 and 2, the centering device 500 further includes a centering bracket 510, a cylinder 520 fixed on an upper surface of the centering bracket and arranged in a front-rear direction, and a centering rod 530 fixedly connected to a movable end of the cylinder.

The piston is placed on the bearing table, the positioning block can limit the movement of the piston, the precision of the linear module is limited, in order to improve the efficiency and precision of clamp spring assembly, the centering rod extends into the piston pin hole firstly, the piston drives the working part of the fourth linear module to move in the left-right direction, the calibration of the initial position of the piston is completed, the fourth linear module conveys the piston to the position between the positioning table and the rear ejection shaft, the axis of the piston pin hole and the axis of the rear ejection shaft are located on the same horizontal plane, the clamp spring can be clamped by the front ejection shaft and the rear ejection shaft, and the clamp spring is conveyed into the piston pin hole.

The piston is positioned between the positioning table and the rear ejection shaft, and the rear ejection shaft needs to pass through the piston pin hole before entering the positioning hole.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A piston clamp spring assembly device, comprising:

a carrier table (120) for carrying and positioning the piston;

the positioning platform (310) is provided with a positioning hole (311) which is divided into a round shrinking part (311-1) positioned at the front part and a constant round part (311-2) positioned at the rear part; the hole diameter of the circle reducing part is gradually reduced from front to back along the axial direction of the positioning hole, and the hole diameter of the constant circle part is not changed;

the pushing device (200) comprises a pushing shaft (240) and a front ejection shaft (250), wherein the pushing shaft can move back and forth, the pushing shaft is used for pushing the clamp spring into the constant circle part (311-2) from the front end of the circle shrinking part (311-1) along the axial direction of the positioning hole, and one end, close to the positioning table (310), of the front ejection shaft (250) is provided with a front limiting part (252);

the matching device (400) comprises a rear ejection shaft (430) capable of moving back and forth, and one end of the rear ejection shaft close to the positioning table is provided with a rear limiting part (432);

the front ejection shaft and the rear ejection shaft extend into the constant circle part and clamp the clamp spring, so that the rear limiting part and the front limiting part can limit radial expansion of the clamp spring together; the front ejection shaft and the rear ejection shaft convey the clamped clamp springs to the position of a clamp spring groove (21) in the piston pin hole, the rear ejection shaft moves backwards, and the clamp springs can radially expand to enter the clamp spring groove.

2. The piston circlip assembling device of claim 1, wherein: one end, close to the positioning table, of the material pushing shaft (240) is fixedly provided with a magnetic round rod (241), the circumferential surface of the magnetic round rod is fixedly provided with a plurality of sliding blocks (242), and the sliding blocks extend outwards along the radial direction of the magnetic round rod; the peripheral surface of the positioning hole (311) is provided with sliding grooves (312) which are in one-to-one correspondence with the sliding blocks, the sliding grooves extend outwards along the radial direction of the positioning hole, and the long edge direction of the sliding grooves is parallel to the axial direction of the positioning hole; and one end of the sliding block (242) close to the positioning table is fixedly provided with a claw (243), the claw extends out from the plane of the end surface of the magnetic round rod close to the positioning table (310), and the inner surfaces of the claws form a clamping surface (244) for limiting the radial outward expansion of the clamp spring.

3. The piston circlip assembling device of claim 1, wherein: the end face of one end, close to the positioning table (310), of the front ejection shaft (250) is fixedly provided with an outward protruding centering shaft (251) on the inner side, and a front ring (253) protruding outward is fixedly provided on the outer side; the end surface of the front ejection shaft close to the positioning table and the end surface of the front ring are in arc transition, and the front limit part (252) is formed by the end surface of the front ejection shaft close to the positioning table, the outer surface of the centering shaft and the inner surface of the front ring in a surrounding mode.

4. The piston circlip assembling device of claim 1, wherein: the rear ejection shaft (430) is close to the end face of one end of the positioning table (310), the inner side of the rear ejection shaft is provided with an inward concave centering hole (431) which is matched with the centering shaft (251) for centering and positioning, and the outer side of the rear ejection shaft is fixedly provided with an outward convex rear ring (433); the end surface of the rear ejection shaft close to the positioning table and the end surface of the rear ring are in arc transition, and the rear limiting part (432) is formed between the end surface of the rear ejection shaft close to the positioning table and the inner surface of the rear ring in a surrounding mode.

5. The piston circlip assembling device of claim 1, wherein: the circumference surface symmetry of permanent circle portion (311-2) is provided with two through-holes (313), the symmetry is provided with two infrared detection device on location platform (310), infrared detection device include with location platform fixed connection survey support (321) and set firmly infrared detector (322) on surveying the support, the infrared ray that one side infrared detector launched can pass two through-holes in proper order and reach opposite side infrared detector's receiving part.

6. The piston circlip assembling device of claim 1, wherein: the material pushing device (200) comprises a bottom plate (210), a first linear module (220) fixedly arranged on the upper surface of the bottom plate and arranged along the front-back direction, and a second linear module (230) fixedly connected with the working part of the first linear module and arranged along the left-right direction, wherein the material pushing shaft (240) and the front ejection shaft (250) are fixedly connected with the working part of the second linear module; the axial line of the material pushing shaft, the axial line of the front ejection shaft and the axial line of the rear ejection shaft (430) are positioned on the same horizontal plane.

7. The piston circlip assembling device of claim 6, wherein: the upper surface of the bottom plate (210) is fixedly provided with a positioning table support (330), the positioning table (310) is fixedly arranged on the upper surface of the positioning table support, and the axis of the positioning hole (311) and the axis of the material pushing shaft (240) are located on the same horizontal plane.

8. The piston circlip assembling device of claim 1, wherein: the matching device comprises a matching support (410) and a third linear module (420) which is fixedly arranged on the matching support and arranged along the front-back direction, and the rear ejection shaft (430) is fixedly connected with a working part of the third linear module.

9. The piston circlip assembling device of claim 1, wherein: still include loading attachment (100), loading attachment includes along the fourth straight line module (110) that left right direction set up, plummer (120) and the work portion fixed connection of fourth straight line module, the plummer includes the plummer body and sets firmly in the upper surface of plummer body and be used for positioning piston locating piece (130).

10. The piston circlip assembling device of claim 9, wherein: the centering device (500) comprises a centering support (510), an air cylinder (520) fixedly arranged on the upper surface of the centering support and arranged along the front-back direction, and a centering rod (530) fixedly connected with the movable end of the air cylinder.

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