CN110744279A

CN110744279A - Assembling device

Info

Publication number: CN110744279A
Application number: CN201810822013.5A
Authority: CN
Inventors: 张添鑫; 张龙; 孔兵; 杨佳
Original assignee: Fuding Electronic Technology Jiashan Co Ltd
Current assignee: Fuding Electronic Technology Jiashan Co Ltd
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2020-02-04
Anticipated expiration: 2038-07-24
Also published as: CN110744279B

Abstract

The invention provides an assembling device which is used for assembling small parts on rotating shaft holes of workpieces and comprises a rack, a positioning mechanism, a protection mechanism, a feeding mechanism, a pressing mechanism and a blocking mechanism, wherein the positioning mechanism is arranged on the rack and used for placing and positioning the workpieces, the protection mechanism is arranged on the positioning mechanism and used for abutting against the outer wall of the side wall of the rotating shaft hole to protect the rotating shaft hole, the feeding mechanism is arranged on the rack and used for providing the small parts to the pressing mechanism, the pressing mechanism is arranged on the rack and used for pressing and assembling the small parts into the rotating shaft hole of the workpiece, the blocking mechanism is arranged on the pressing mechanism and used for abutting against the outer wall of the bottom wall of the rotating shaft hole when the pressing mechanism presses the small parts to prevent the workpieces from being deformed due to overlarge pressing force of the pressing mechanism. The assembling device can quickly and accurately complete the work of assembling small parts on the rotating shaft hole of the workpiece, and improves the working efficiency and the accuracy.

Description

Assembling device

Technical Field

The present invention relates to an assembling device, and more particularly to an assembling device capable of assembling a small component to a rotary shaft hole of a workpiece.

Background

In the machining process, one workpiece is often required to be assembled into a rotating shaft hole of the other workpiece so as to enable the two workpieces to be connected in a rotating mode, the existing assembly is mostly manual operation, an operator checks a smaller workpiece and then manually inserts the smaller workpiece into the rotating shaft hole of the other workpiece, but the two workpieces are connected insecurely easily due to the manual operation, and the manual operation efficiency is low. The other assembly is a pressing machine for pressing, but the conventional pressing machine easily causes the rotating shaft hole to be damaged by pressing or causes a workpiece containing the rotating shaft hole to deform in pressing because of overlarge pressing force in the pressing process, and the two assemblies both cause the reduction of the pressing quality.

Disclosure of Invention

In view of the above circumstances, it is necessary to provide an assembling device that facilitates assembling of a small part onto a spindle hole of a workpiece to solve the above problems.

An assembling device is used for assembling small pieces onto a rotating shaft hole of a workpiece, and comprises a frame, a positioning mechanism, a protection mechanism, a feeding mechanism, a pressing mechanism and a blocking mechanism, wherein the positioning mechanism is arranged on the frame and used for placing and positioning the workpiece, the protection mechanism is arranged on the positioning mechanism and used for abutting against the outer wall of the side wall of the rotating shaft hole to protect the rotating shaft hole, the feeding mechanism is arranged on the frame and used for providing the small pieces for the pressing mechanism, the pressing mechanism is arranged on the frame and used for assembling the small pieces into the rotating shaft hole of the workpiece in a pressing manner, the blocking mechanism is arranged on the pressing mechanism and used for abutting against the outer wall of the bottom wall of the rotating shaft hole when the pressing mechanism presses the small pieces to prevent the workpiece from being pressed by the pressing mechanism The force is too great to cause deformation.

The assembling device is used for positioning the workpiece through the positioning mechanism, protecting the rotating shaft hole through the protection mechanism, feeding small parts through the feeding mechanism, pressing the small parts in the rotating shaft hole through the pressing mechanism, and preventing overpressure through the blocking mechanism, so that the small parts are quickly and accurately assembled on the rotating shaft hole of the workpiece, and the working efficiency and the accuracy are improved.

Drawings

Fig. 1 is a perspective view of an assembly device in one embodiment of the invention.

Fig. 2 is a perspective view of a part of the mechanism of the assembly device shown in fig. 1.

Fig. 3 is a perspective view of a small part and a workpiece according to an embodiment of the present invention.

Fig. 4 is a partially enlarged perspective view of the small part and the workpiece shown in fig. 3.

Fig. 5 is a partially exploded view of the positioning mechanism and the protection mechanism of the assembly device shown in fig. 1.

Fig. 6 is an enlarged perspective view of the protection mechanism shown in fig. 5.

Fig. 7 is a cross-sectional view VII-VII of the protection mechanism shown in fig. 5.

Fig. 8 is a perspective view of a loading mechanism of the assembly device shown in fig. 1.

Fig. 9 is a partially exploded perspective view of the loading mechanism shown in fig. 8.

Fig. 10 is a perspective view of the pressing mechanism and the blocking mechanism of the assembling device shown in fig. 1.

Fig. 11 is a partial perspective view of the stitching mechanism shown in fig. 10.

Fig. 12 is an enlarged perspective view of a positioning module of the stitching mechanism shown in fig. 10.

Fig. 13 is a partially exploded perspective view of the positioning module of fig. 12.

Fig. 14 is a perspective view of the blocking mechanism of fig. 10.

FIG. 15 is a partially exploded perspective view of the blocking mechanism shown in FIG. 14.

Fig. 16 is a cross-sectional view of the blocking mechanism of fig. 14 taken along XVI-XVI.

Description of the main elements

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, an assembling apparatus 100 is provided. The assembling device 100 can assemble the small part 200 to the spindle hole 301 of the workpiece 300. The assembling device 100 includes a frame 10, a positioning mechanism 20, a protecting mechanism 30, a feeding mechanism 40, a pressing mechanism 50, and a blocking mechanism 60. The positioning mechanism 20 is disposed on the frame 10. The positioning mechanism 20 is used to place and position the workpiece 300. The protection mechanism 30 is disposed on the positioning mechanism 20. The protection mechanism 30 is used for abutting against the outer wall of the side wall of the rotating shaft hole 301 so as to protect the rotating shaft hole 301. The feeding mechanism 40 is disposed on the frame 10. The feeding mechanism 40 is used to supply the small pieces 200 to the stitching mechanism 50. The pressing mechanism 50 is disposed on the frame 10. The pressing mechanism 50 is used for pressing and assembling the small part 200 into the rotating shaft hole 301 of the workpiece 300. The blocking mechanism 60 is disposed on the pressing mechanism 50. The blocking mechanism 60 is used for abutting against the outer wall of the bottom wall of the rotating shaft hole 301 when the pressing mechanism 50 presses the small part 200 so as to prevent the workpiece 300 from being deformed due to overlarge pressing force of the pressing mechanism 50. In this embodiment, the assembling device 100 respectively assembles the two small pieces 200 into two corresponding rotating shaft holes 301 of the workpiece 300, and the protection mechanism 30, the feeding mechanism 40, the pressing mechanism 50, and the blocking mechanism 60 are two oppositely disposed.

The frame 10 includes a support frame 11 and a support plate 12 disposed on the support frame 11. The positioning mechanism 20, the feeding mechanism 40 and the pressing mechanism 50 are disposed on the supporting plate 12.

In this embodiment, the frame 10 further includes a dust cover 13 covering the support plate 12.

As shown in fig. 5 to 7, the positioning mechanism 20 includes a positioning frame 21, a positioning plate 22, a positioning driving member 23, a positioning member 24, a push driving member 25, a push member 26, a push driving member 27, and a push member 28. The positioning frame 21 is provided on the support plate 12. The positioning plate 22 is disposed on the positioning frame 21. The positioning plate 22 is used for placing the workpiece 300. The positioning driving member 23 is disposed on the positioning frame 21. The positioning member 24 is disposed on the positioning driving member 23 and located between the positioning frame 21 and the positioning plate 22. The positioning member 24 can be moved by the positioning drive 23 to clamp the workpiece 300 from both sides. The push driver 25 is provided on the support plate 12. The pushing member 26 is provided on the push driver 25 and can move under the driving of the push driver 25 to press the workpiece 300 against the positioning plate 22 from the side above the workpiece 300. The push-down driving member 27 is provided on the support plate 12 on a side of the positioning frame 21 away from the push-down driving member 25. The lower pressing member 28 is disposed on the lower pressing driving member 27 and can move under the driving of the lower pressing driving member 27 to press the workpiece 300 onto the positioning plate 22 from the other side above the workpiece 300. In this embodiment, the number of the pressing driving members 27 and the number of the pressing members 28 are two.

The protection mechanism 30 includes a protection driving member 31, a pulling block 32, and a protection block 33. The protection driving member 31 is disposed on the positioning frame 21. The positioning plate 22 is provided with a protective groove 221. The protective groove 221 is formed by a first transverse groove 2211 and a first longitudinal groove 2212 which are perpendicular to each other and communicate with each other. The pull block 32 is disposed on the protection driving member 31 and located in the first transverse slot 2211. The pull block 32 is movable along the first transverse slot 2211 by the protective drive 31. The pull block 32 is provided with a first wedge-shaped groove 321. The protection block 33 is disposed in the first longitudinal slot 2212 and has a second wedge-shaped slot 331 formed thereon for engaging with the first wedge-shaped slot 321 of the pull block 32. The protection block 33 can move along the first longitudinal groove 2212 by the cooperation of the first wedge groove 321 and the second wedge groove 331 when the pull block 32 moves along the first transverse groove 2211. The protection block 33 is used for abutting against the outer wall of the side wall of the rotating shaft hole 301 so as to protect the rotating shaft hole 301.

As shown in fig. 8 and 9, the feeding mechanism 40 includes an adjusting seat 41, an adjusting driving element 42, a storing module 43, a pushing driving element 44, a pushing element 45, and a clamping module 46. The adjustment seat 41 is provided on the support plate 12. The adjusting driving member 42 is disposed on the adjusting seat 41. The magazine module 43 is slidably disposed on the adjustment seat 41 and is movable by the adjustment driving member 42. The magazine module 43 is used to store the small pieces 200. The pushing driving member 44 is disposed on the adjusting seat 41. The pushing member 45 is disposed on the pushing driving member 44 and can be driven by the pushing driving member 44 to move so as to push the small pieces 200 stored in the magazine module 43 out of the magazine module 43. The clamping module 46 is disposed on the adjusting base 41. The material clamping module 46 is used for clamping and delivering the pushed small pieces 200 to the pressing mechanism 50.

The magazine module 43 includes a magazine 431, a magazine drive 432 and a hold-down 433. The storage rack 431 is slidably disposed on the adjusting seat 41. The storage rack 431 is used for storing a plurality of the small pieces 200. The storage driving member 432 is disposed on the storage rack 431. The pressing member 433 is slidably disposed in the storage rack 431 and can move in the storage rack 431 under the driving of the storage driving member 432 to clamp the small workpiece 200 in the storage rack 431.

The clamping module 46 includes a shift driving member 461, a shift member 462, a side pushing driving member 463, a side pushing member 464, a clamping driving member 465 and a clamping member 466. The displacement driving member 461 is disposed on the adjusting seat 41. The shifting member 462 is slidably disposed on the adjusting seat 41 and can be driven by the shifting driving member 461 to move. The side pushing driving element 463 is disposed on the displacement element 462. The side pushing element 464 is disposed on the side pushing driving element 463 and can move under the driving of the side pushing driving element 463. The clamping driving part 465 is arranged on the side pushing part 464. The clamping member 466 is disposed on the clamping driving member 465 and can be driven by the clamping driving member 465 to move so as to clamp the small piece 200 pushed out by the pushing member 45.

As shown in fig. 10 to 13, the pressing mechanism 50 includes a movable driving member 51, a pressing plate 52, a pressing driving member 53, a sliding plate 54, a pushing driving member 55, a pushing rod 56, a limiting driving member 57, a limiting member 58 and a positioning module 59. The movable driving member 51 is disposed on the support plate 12. The pressing plate 52 is slidably disposed on the supporting plate 12 and can move to approach or separate from the positioning mechanism 20 under the driving of the moving driving member 51. The pressing driving member 53 is disposed on the pressing plate 52. The sliding plate 54 is slidably disposed on the pressing plate 52 and can move to approach or separate from the positioning mechanism 20 under the driving of the pressing driving member 53. The pushing position driving member 55 is disposed on the sliding plate 54. The push rod 56 is disposed on the positioning driving member 55 and can move to approach or move away from the positioning mechanism 20 under the driving of the positioning driving member 55. A limit plug 561 is disposed at an end of the push rod 56 away from the pushing position driving member 55. The limiting plug 561 is used to flexibly limit the movement of the sliding plate 54 when the push rod 56 approaches the positioning mechanism 20. The limit driving piece 57 is provided on the sliding plate 54. The push rod 56 is also provided with a stop block 562. The limiting part 58 is disposed on the limiting driving part 57 and can move to be close to or far from the push rod 56 under the driving of the limiting driving part 57 to cooperate with the limiting block 562 to limit the movement of the push rod 56. The positioning module 59 is disposed at an end of the sliding plate 54 facing the positioning mechanism 20. The positioning module 59 is used for pressing the small element 200 clamped on the sliding plate 54 into the rotating shaft hole 301 when the sliding plate 54 approaches the positioning mechanism 20.

As shown in fig. 12 and 13, the positioning module 59 includes a base plate 591, a moving plate 592, a displacement plate 593, a clamping plate 594, a pressing driving member 595, a pushing block 596, and a pressing block 597. The base plate 591 is disposed at an end of the sliding plate 54 facing the positioning mechanism 20. The moving plate 592 is slidably disposed on the base plate 591. The shift plate 593 is provided on the moving plate 592 to slide in a direction perpendicular to the sliding direction of the moving plate 592. The clamping plate 594 is disposed on the shifting plate 593. The clamping plate 594 is provided with a clamping groove 5941. The holding groove 5941 is formed by a second transverse groove 5942 and a second longitudinal groove 5943 which are communicated with each other and are vertical. The impact driver 595 is disposed on the clamping plate 594. The push block 596 is disposed on the compression driver 595 and is located in the second longitudinal slot 5943. The push block 596 is movable along the second longitudinal slot 5943 by the compression driver 595. The pushing block 596 is provided with a guide post 5961. The pressing block 597 is disposed in the second longitudinal groove 5943 and has an inclined hole 5971 formed thereon to be engaged with the guide post 5961 of the pushing block 596. The second transverse slot 5942 is provided with a hold-down wall 5944 that cooperates with the hold-down block 597, away from the side wall of the push block 596. The compression block 597 is capable of moving along the second transverse slot 5942 in cooperation with the guide post 5961 and the angled hole 5971 to engage the compression wall 5944 to clamp the widget 200 as the push block 596 moves along the second longitudinal slot 5943.

As shown in fig. 14 to 16, the blocking mechanism 60 includes a blocking seat 61, a blocking driving member 62, a pressing piece 63, and a blocking member 64. The stopper 61 is provided on the laminate panel 52. The blocking seat 61 is provided with a blocking groove 611. The blocking groove 611 is formed by a third transverse groove 6111 and a third longitudinal groove 6112 which are mutually communicated and vertical. The blocking driving member 62 is disposed on the blocking seat 61. The pressing block 63 is disposed on the blocking driving member 62 and located in the third longitudinal groove 6112. The pressing block 63 is driven by the blocking driving member 62 to move along the third longitudinal groove 6112. The end of the pressure piece 63 remote from the blocking drive 62 is provided with a wedge 631. The blocking member 64 is disposed in the third transverse groove 6111 and has an inclined groove 641 formed thereon for engaging with the wedge 631 of the pressing block 63. The blocking member 64 can move along the third transverse groove 6111 under the cooperation of the wedge 631 and the inclined groove 641 when the pressing block 63 moves along the third longitudinal groove 6112 to extend out of the blocking seat 61 and abut against the outer wall of the bottom wall of the rotating shaft hole 301 when the pressing mechanism 50 presses the small component 200 so as to prevent the workpiece 300 from being deformed due to an excessive pressing force of the pressing mechanism 50.

In operation, the plurality of small workpieces 200 are received in the magazine 431, the workpiece 300 is placed on the positioning plate 22, the positioning driving member 23 drives the positioning member 24 to move so as to clamp the workpiece 300 from two sides, the pushing driving member 25 drives the pushing member 26 to move so as to press the workpiece 300 onto the positioning plate 22 from one side above the workpiece 300, and the pushing driving member 27 drives the pushing member 28 to move so as to press the workpiece 300 onto the positioning plate 22 from the other side above the workpiece 300. The protection driving member 31 drives the pulling block 32 to move, the protection block 33 moves along the first longitudinal slot 2212 to abut against the outer wall of the side wall of the holding shaft hole 301 under the matching of the first wedge-shaped slot 321 and the second wedge-shaped slot 331, the pushing material driving member 44 drives the pushing material 45 to move so as to push the small piece 200 stored in the storage rack 431 out of the storage rack 431, the clamping driving member 465 drives the clamping member 466 to move so as to clamp the small piece 200, the small piece 200 is fed into the second transverse slot 5942 of the positioning module 59 under the driving of the side pushing driving member 463 and the displacement driving member 461, the pressing driving member 595 drives the pushing block 596 to move, the displacement driving member 51 stops driving when the pressing block 597 moves along the second transverse slot 5942 under the matching of the guide column 5961 and the inclined hole 5971 so as to match with the pressing wall 5944 to clamp the small piece 200, the displacement driving member 51 drives the pressing plate 52 to move to approach the positioning mechanism 20, and the sliding plate 53 drives the sliding plate 54 to move to approach, at this time, the blocking driving member 62 drives the pressing block 63 to move along the third longitudinal groove 6112 to drive the blocking member 64 to move along the third transverse groove 6111 to extend out of the blocking seat 61 and abut against the outer wall of the bottom wall of the rotating shaft hole 301, the pushing driving member 55 drives the push rod 56 to move so as to approach the positioning mechanism 20 to flexibly limit the movement of the sliding plate 54, the pressing driving member 53 drives the sliding plate 54 to move so as to drive the positioning module 59 on the sliding plate 54 to move towards the workpiece 300, and the small piece 200 clamped on the positioning module 59 is pressed in the rotating shaft hole 301 of the workpiece 300, so that the assembly.

The assembling device 100 positions the workpiece 300 through the positioning mechanism 20, protects the rotating shaft hole 301 through the protection mechanism 30, carries out loading of the small part 200 through the loading mechanism 40, presses the small part 200 in the rotating shaft hole 301 through the pressing mechanism 50, and prevents overpressure through the blocking mechanism 60, so that the small part 200 is assembled on the rotating shaft hole 301 of the workpiece 300 quickly and accurately, and the working efficiency and the accuracy are improved.

In addition, other modifications within the spirit of the invention may occur to those skilled in the art, and such modifications are, of course, included within the scope of the invention as claimed.

Claims

1. An assembling device is used for assembling small parts on a rotating shaft hole of a workpiece, and is characterized in that: the assembling device comprises a frame, a positioning mechanism, a protection mechanism, a feeding mechanism, a pressing mechanism and a blocking mechanism, the positioning mechanism is arranged on the frame and used for placing and positioning the workpiece, the protection mechanism is arranged on the positioning mechanism and used for abutting against the outer wall of the side wall of the rotating shaft hole to protect the rotating shaft hole, the feeding mechanism is arranged on the frame and used for providing the small pieces for the pressing mechanism, the pressing mechanism is arranged on the frame and is used for pressing and assembling the small pieces into the rotating shaft holes of the workpieces, the blocking mechanism is arranged on the pressing mechanism and used for abutting against the outer wall of the bottom wall of the rotating shaft hole when the pressing mechanism presses the small piece so as to prevent the workpiece from being deformed due to overlarge pressing force of the pressing mechanism.

2. The assembly device of claim 1, wherein: the frame includes the support frame and sets up in backup pad on the support frame, positioning mechanism, feed mechanism and pressing mechanism all set up in the backup pad.

3. The assembly device of claim 1, wherein: the positioning mechanism comprises a positioning frame, a positioning plate, a positioning driving piece, a positioning piece, a pushing driving piece, a pushing driving piece and a pushing piece, the positioning frame is arranged on the rack, the positioning plate is arranged on the positioning frame, the positioning plate is used for placing the workpiece, the positioning piece is arranged on the positioning frame, the positioning piece is arranged on the positioning driving piece and is positioned between the positioning frame and the positioning plate, the positioning piece can move under the driving of the positioning driving piece to clamp the workpiece from two sides of the workpiece, the pushing driving piece is arranged on the rack, the pushing piece is arranged on the pushing driving piece and can move under the driving of the pushing driving piece to compress the workpiece on the positioning plate from one side above the workpiece, the pushing driving piece is arranged on the rack and is positioned on one side of the positioning frame away from the pushing driving piece, the pressing piece is arranged on the pressing driving piece and can move under the driving of the pressing driving piece so as to press the workpiece on the positioning plate from the other side above the workpiece.

4. The assembly device of claim 3, wherein: the protection mechanism comprises a protection driving piece, a pulling block and a protection block, the protection driving piece is arranged on the positioning frame, the positioning plate is provided with a protective groove which is composed of a first transverse groove and a first longitudinal groove which are mutually communicated and vertical, the pulling block is arranged on the protection driving part and is positioned in the first transverse groove, the pulling block can move along the first transverse groove under the driving of the protection driving part, the pull block is provided with a first wedge-shaped groove, the protection block is arranged in the first longitudinal groove and is provided with a second wedge-shaped groove matched with the first wedge-shaped groove of the pull block, the protection piece can be in the piece of drawing along when first transverse groove removes through the cooperation of first wedge groove with the second wedge groove is followed first longitudinal groove removes, the protection piece is used for supporting and holds the outer wall of pivot hole 0 lateral wall is in order to protect the pivot hole.

5. The assembly device of claim 1, wherein: feed mechanism is including adjusting the seat, adjusting driving piece, storage module, pushing away the material driving piece, pushing away the material spare, pressing from both sides the material module, adjust the seat set up in the frame, adjust the driving piece set up in adjust on the seat, the storage module slides and locates adjust on the seat and can adjust the drive of driving piece and remove down, the storage module is used for storing the smallclothes, push away the material driving piece set up in adjust on the seat, push away the material spare set up in push away on the material driving piece and can push away the drive that pushes away the material driving piece and remove down with will store in the storage module the smallclothes are released the storage module, press from both sides the material module set up in adjust on the seat, press from both sides the material module and be used for releasing the smallclothes clamp is got and is delivered to.

6. The assembly device of claim 5, wherein: the storage module includes storage frame, storage driving piece and compresses tightly the piece, the storage frame slides and locates adjust on the seat, the storage frame is used for storing a plurality ofly the smallclothes, the storage driving piece set up in on the storage frame, it slides and locates to compress tightly in the storage frame and can be in under the drive of storage driving piece remove in the storage frame in order to press from both sides tightly in the storage frame the smallclothes.

7. The assembly device of claim 5, wherein: the clamping module comprises a shifting driving piece, a shifting piece, a side pushing driving piece, a side pushing piece, a clamping driving piece and a clamping piece, wherein the shifting driving piece is arranged on the adjusting seat, the shifting piece is slidably arranged on the adjusting seat and can be moved under the driving of the shifting driving piece, the side pushing driving piece is arranged on the shifting piece, the side pushing piece is arranged on the side pushing driving piece and can be moved under the driving of the side pushing driving piece, the clamping driving piece is arranged on the side pushing piece, and the clamping piece is arranged on the clamping driving piece and can be moved under the driving of the clamping driving piece so as to clamp the small piece pushed by the pushing piece.

8. The assembly device of claim 1, wherein: the pressing mechanism comprises a movable driving piece, a pressing plate, a pressing driving piece, a sliding plate, a pushing driving piece, a push rod, a limiting driving piece, a limiting piece and a positioning module, the movable driving piece is arranged on the rack, the pressing plate is arranged on the rack in a sliding manner and can move to be close to or far away from the positioning mechanism under the driving of the movable driving piece, the pressing driving piece is arranged on the pressing plate, the sliding plate is arranged on the pressing plate in a sliding manner and can move to be close to or far away from the positioning mechanism under the driving of the pressing driving piece, the pushing driving piece is arranged on the sliding plate, the push rod is arranged on the pushing driving piece and can move to be close to or far away from the positioning mechanism under the driving of the pushing driving piece, and one end of the push rod, which is far away from the pushing driving piece, the limiting plug is used for flexibly limiting the movement of the sliding plate when the push rod is close to the positioning mechanism, the limiting driving piece is arranged on the sliding plate, a limiting block is further arranged on the push rod, the limiting block is arranged on the limiting driving piece and can move under the driving of the limiting driving piece to be close to or far away from the push rod so as to be matched with the limiting block to limit the movement of the push rod, the positioning module is arranged at one end, facing the positioning mechanism, of the sliding plate, and the positioning module is used for pressing the small pieces clamped on the positioning module into the rotating shaft hole when the sliding plate is close to the positioning mechanism.

9. The assembly device of claim 8, wherein: the positioning module comprises a base plate, a moving plate, a shifting plate, a clamping plate, a pressing driving piece, a pushing block and a pressing block, wherein the base plate is arranged at one end of the sliding plate facing the positioning mechanism, the moving plate is arranged on the base plate in a sliding manner, the shifting plate is arranged on the moving plate in a sliding manner along a direction perpendicular to the sliding direction of the moving plate, the clamping plate is arranged on the shifting plate, a clamping groove is formed in the clamping plate and consists of a second transverse groove and a second longitudinal groove which are mutually communicated and perpendicular, the pressing driving piece is arranged on the clamping plate, the pushing block is arranged on the pressing driving piece and is positioned in the second longitudinal groove, the pushing block can move along the second longitudinal groove under the driving of the pressing driving piece, a guide column is arranged on the pushing block, the pressing block is arranged in the second longitudinal groove and is provided with an inclined hole matched with the guide column of the pushing block, the side wall of the second transverse groove far away from the push block is provided with a pressing wall matched with the pressing block, and the pressing block can move along the second transverse groove under the matching of the guide column and the inclined hole when the push block moves along the second longitudinal groove so as to be matched with the pressing wall to clamp the small piece.

10. The assembly device of claim 8, wherein: the blocking mechanism comprises a blocking seat, a blocking driving piece, a pressing block and a blocking piece, the blocking seat is arranged on the pressing plate, a blocking groove is formed in the blocking seat and is formed by a third transverse groove and a third longitudinal groove which are communicated with each other and vertical to each other, the blocking driving piece is arranged on the blocking seat, the pressing block is arranged on the blocking driving piece and is located in the third longitudinal groove, the pressing block can move along the third longitudinal groove under the driving of the blocking driving piece, a wedge-shaped portion is arranged at one end, away from the blocking driving piece, of the pressing block, the blocking piece is arranged in the third transverse groove and is provided with a chute matched with the wedge-shaped portion of the pressing block, and the blocking piece can move along the third transverse groove under the matching of the wedge-shaped portion and the chute to extend out of the blocking seat when the pressing mechanism presses the small pieces, and can abut against and hold the blocking seat when the pressing mechanism presses the small pieces The outer wall of the bottom wall of the rotating shaft hole is used for preventing the workpiece from being deformed due to overlarge pressing force of the pressing mechanism.