CN220534123U - Elastic coil assembling device - Google Patents

Abstract

The application discloses an elastic coil assembly device, which comprises a moving mechanism, two opening mechanisms and two lifting mechanisms; each expanding mechanism comprises an expanding driving piece, two connecting pieces and two expanding pieces; the opening driving piece is connected with the moving mechanism and moves along a first direction under the driving of the moving mechanism; the two connecting pieces are connected with the opening driving piece and are mutually far away or close to each other along the second direction under the driving of the opening driving piece; the two supporting members are used for supporting the elastic coil and are respectively connected with the two connecting pieces in a sliding manner along a third direction, and the two supporting members are far away from or close to each other along the second direction along with the two connecting pieces; and the two lifting mechanisms are respectively connected with two expanding pieces in each expanding mechanism, and each lifting mechanism is used for driving the corresponding two expanding pieces to lift along the third direction. The elastic coil assembling device can reduce labor input, reduce labor intensity and avoid the problem that the elastic coil is scrapped due to human operation errors.

Description

Elastic coil assembling device

Technical Field

The application relates to the technical field of elastic coil assembly, in particular to an elastic coil assembly device.

Background

Currently, during workpiece processing, it is often necessary to install a resilient coil, such as a seal ring, on the workpiece. However, in the conventional work, an operator manually engages an elastic coil around a work piece. Because of the manual operation, the labor intensity of operators is high, and the elastic coil is easy to damage or discard in the operation process.

Disclosure of Invention

In view of the foregoing, it is necessary to provide an elastic coil assembling device, which can reduce labor intensity of operators and is not easy to damage or discard the elastic coil.

The embodiment of the application provides an elastic coil assembling device which is used for sleeving an elastic coil on a workpiece to be assembled, and comprises a moving mechanism, two oppositely arranged opening mechanisms and two lifting mechanisms; each expanding mechanism comprises an expanding driving piece, two connecting pieces and two expanding pieces, wherein the connecting pieces are arranged in parallel; the expanding driving piece is connected with the moving mechanism and moves along a first direction under the driving of the moving mechanism; the two connecting pieces are connected with the opening driving piece and are mutually far away or close to each other along the second direction under the driving of the opening driving piece; the two supporting members are used for supporting the elastic coil and are respectively connected with the two connecting pieces in a sliding manner along a third direction, and the two supporting members follow the two connecting pieces to be far away from or close to each other in the second direction; the two lifting mechanisms are respectively connected with two supporting members in each supporting mechanism, and each lifting mechanism is used for driving the corresponding two supporting members to lift along the third direction; when the moving mechanism drives the two expanding driving members to be far away from each other so that the elastic coil is expanded in the first direction, each expanding driving member drives the corresponding two connecting members to be far away from each other so that the corresponding two expanding members expand the elastic coil in the second direction; after the elastic coil is arranged around the workpiece, each opening driving piece drives the corresponding two connecting pieces to approach each other so that the elastic coil rebounds in the second direction, and the two lifting mechanisms drive the corresponding two opening pieces to ascend so that the elastic coil is separated from the opening pieces and sleeved on the workpiece.

When the elastic coil assembly device is used for assembling the elastic coil, the lifting mechanism can drive the supporting members to move to the inside of the elastic coil, then the moving mechanism drives the two supporting driving members to be away from each other, and the two supporting driving members drive the corresponding two connecting members to be away from each other, so that the elastic coil is supported in the first direction and the second direction. Because the elastic coil is propped up by the four propping-up pieces, the elastic coil can be easily surrounded on the outer side of the workpiece at the moment, then the propping-up driving piece drives the corresponding two propping-up pieces to be closed, and finally the two lifting mechanisms drive the corresponding two propping-up pieces to lift up so that the elastic coil is separated from the propping-up pieces and sleeved on the workpiece. Because the elastic coil assembling device can replace manual operation, the labor investment is reduced, and the labor intensity of operators is reduced; in addition, because manual operation is not needed, the problem that the elastic coil is scrapped due to manual operation errors is avoided.

In some embodiments, the lifting mechanism includes a lifting drive, a push member, and two rotating assemblies; the lifting driving piece is arranged on one side of the opening driving piece; the pushing piece is connected with the lifting driving piece and moves under the driving of the lifting driving piece; the two rotating assemblies are respectively connected to the two connecting pieces and meshed with the two supporting pieces respectively, and the rotating assemblies rotate under the pushing of the pushing pieces and drive the corresponding supporting pieces to lift along the third direction.

In some embodiments, the spreader is provided with a rack portion thereon; the rotating assembly comprises a rotating member and an elastic member; the rotating piece comprises a rotating gear and an abutting push rod connected with the rotating gear, the rotating gear is rotationally connected with the connecting piece and meshed with the rack part, and the abutting push rod is used for abutting against the abutting push piece so as to drive the rotating gear to rotate under the abutting push of the abutting push piece, so that the supporting piece rises along the third direction; the two ends of the elastic piece are respectively connected with the connecting piece and the pushing rod, the pushing rod resets under the action of the elastic force of the elastic piece and enables the rotary gear to rotate, and the rotary gear drives the expanding piece to descend downwards along the third direction.

In some embodiments, the pushing piece is provided with a pushing inclined plane, the pushing rod is provided with a pushing curved plane, and the pushing piece pushes the pushing curved plane through the pushing inclined plane, so that the pushing curved plane drives the pushing rod to move.

In some embodiments, a protruding part is arranged on one side of the connecting piece, which faces the rotating piece; the rotating piece further comprises a limiting block, the limiting block is arranged on one side, facing the protruding portion, of the pushing rod, and the limiting block is used for abutting against the protruding portion to limit the rotating angle of the rotating gear.

In some embodiments, the moving mechanism comprises two moving driving members, and the two moving driving members are respectively connected with the two expanding driving members to drive the corresponding expanding driving members to move.

In some embodiments, the elastic coil assembly device further comprises a sliding mechanism comprising two guide rails and a sliding seat; the two guide rails are mutually perpendicular and connected in a sliding manner, and extend along the first direction and the second direction respectively; the sliding seat is connected to one of the guide rails in a sliding manner, the two expanding mechanisms are arranged on the sliding seat at intervals, the two movable driving parts are connected to the sliding seat at intervals, and the sliding seat moves along the first direction or the second direction along the two expanding mechanisms under the guiding action of the two guide rails.

In some embodiments, the distractor comprises a distractor body and a distractor portion; the main body of the spreading piece is connected with the connecting piece in a sliding way; the expanding part is connected with the expanding member main body, and the cross section area of the expanding part is smaller than that of the expanding member main body and is used for being inserted into the elastic coil to expand the elastic coil.

In some embodiments, the cross section of the spreading part is semicircular, the spreading part is provided with a plane and a curved surface connected with the plane, and the planes of the two spreading parts are abutted under the drive of the spreading driving member.

In some embodiments, the connector is provided with a yielding groove configured to receive the pushing member when the pushing member pushes the pushing rod.

Drawings

Fig. 1 is a schematic perspective view of an elastic coil assembly device according to an embodiment of the present application.

Fig. 2 is a schematic perspective view of the elastic coil assembly device shown in fig. 1, in which the elastic coil is stretched in a first direction.

Fig. 3 is a schematic perspective view of the elastic coil assembly device shown in fig. 1, in which the elastic coil is stretched in a first direction and a third direction.

Fig. 4 is an exploded view of a part of the structure of the lifting mechanism and the spreader mechanism shown in fig. 2.

Fig. 5 is a schematic perspective view of the rotating member of the elevating mechanism shown in fig. 4.

Fig. 6 is a schematic perspective view of an elastic coil assembled by the elastic coil assembling device shown in fig. 1.

Description of the main reference signs

Elastic coil assembling device 100

Opening mechanism 10

Opening driving piece 11

Connector 12

Chute 121

Yield groove 122

Boss 123

Opening piece 13

The spreader body 131

Opening portion 132

Plane 1321

Curved surface 1322

Guide portion 133

Rack portion 134

Lifting mechanism 20

Lifting drive 21

Push member 22

Thrust ramp 221

Rotating assembly 23

Rotating member 231

Rotation gear 2311

Push rod 2312

Stopper 2313

Pushing curved surface 2314

Elastic member 232

Moving mechanism 30

The movement driving member 31

Sliding mechanism 40

Guide rail 41

Sliding seat 42

Slider 43

Elastic coil 200

Workpiece 300

Carrier 400

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the present application. Furthermore, in the description of the present application, it is to be noted that the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be connected in a mechanical mode, can be electrically connected or can be communicated with each other, can be directly connected, can be indirectly connected through an intermediate medium, and can be communicated with each other inside the two components or can be in interaction relation with each other. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, an elastic coil assembly device 100 is provided in an embodiment of the present application. The elastic coil assembly device 100 can automatically sleeve the elastic coil 200 on a workpiece 300 to be assembled, for example, the elastic coil 200 is first mounted on the carrier 400, and the elastic coil assembly device 100 removes the elastic coil 200 from the carrier 400 and mounts the elastic coil 200 on the workpiece 300.

For ease of understanding, a three-dimensional coordinate system is established in fig. 1, with the directions of the X-axis, the Y-axis, and the Z-axis being shown in the figure, wherein the Y-axis is defined as a first direction, the X-axis is defined as a second direction, and the Z-axis is defined as a third direction.

Referring to fig. 1 and 2, the elastic coil assembly device 100 includes a spreader mechanism 10, a lifter mechanism 20, a moving mechanism 30, and a sliding mechanism 40. The number of the opening mechanisms 10 is two, and the two opening mechanisms 10 are slidably arranged on the sliding mechanism 40 along the Y-axis direction.

The number of the lifting mechanisms 20 is two, the two lifting mechanisms 20 are respectively connected with the two opening mechanisms 10, and the lifting mechanisms 20 are used for enabling the opening mechanisms 10 to lift along the Z-axis direction.

The moving mechanism 30 is disposed on the sliding mechanism 40, and the two opening mechanisms 10 are connected to the moving mechanism 30, and the two opening mechanisms 10 are driven by the moving mechanism 30 to move along the Y axis.

Referring to fig. 3, the two expanding mechanisms 10 have the same structure, and one group of the expanding mechanisms 10 includes an expanding driving member 11, two connecting members 12 and two expanding members 13. The expanding driving member 11 may be a jaw cylinder, and the expanding driving member 11 is connected to the sliding mechanism 40. The connecting pieces 12 are L-shaped structures, the two connecting pieces 12 are arranged in parallel and are connected to the opening driving piece 11, and the two opening pieces 13 are respectively connected to the two connecting pieces 12 in a sliding mode along the Z-axis direction. When the elastic coil assembly device 100 needs to prop up the elastic coil 200, the moving mechanism 30 drives the two prop-up mechanisms 10 away from each other to prop up the elastic coil 200 in the Y-axis direction, and then the four connecting members 12 are driven by the two prop-up driving members 11 to move away from each other in the X-axis direction to prop up the elastic coil 200 in the X-axis direction, so that the elastic coil 200 is rectangular.

Since the elastic coil 200 is spread, the elastic coil 200 can be easily enclosed outside the work 300. When the elastic coil 200 is enclosed on the outer side of the workpiece 300, the two opening driving members 11 respectively drive the corresponding two connecting members 12 to be closed, and then the lifting mechanism 20 drives the opening mechanism 10 to rise so that the elastic coil 200 can be separated from the opening mechanism 10 and sleeved on the workpiece 300. Because the elastic coil assembling device 100 can replace manual work to assemble the elastic coil 200, the labor input is reduced, the labor intensity of operators is reduced, and the assembling efficiency is also improved. In addition, since manual operation is not required, the problem that the elastic coil 200 is scrapped due to manual operation errors is avoided.

Referring to fig. 1 and 4, the spreader 13 includes a spreader body 131, a spreader 132, and a guide 133. The connecting piece 12 is provided with a chute 121, the chute 121 extends along the Z-axis direction, the guiding part 133 is connected to the side surface of the main body 131 of the opening piece, the guiding part 133 is slidably mounted in the chute 121, and the guiding part 133 plays a role in sliding and guiding the main body 131 of the opening piece. The spreader 132 is connected to the spreader body 131, and the cross-sectional area of the spreader 132 is smaller than that of the spreader body 131, so that one end of the spreader 132, which is far from the spreader body 131, can be easily inserted into the elastic coil 200.

In order to make the plurality of the spreading parts 132 more easily inserted into the elastic coil 200, the cross section of the spreading part 132 is semicircular, the spreading part 132 has a plane 1321 and a curved surface 1322 connected with the plane, and the planes 1321 on the two spreading parts 132 are oppositely arranged, when the spreading driving member 11 drives the two spreading members 13 to approach each other, the planes 1321 on the two spreading parts 132 can be abutted, and at this time, the two spreading parts 132 are combined into a whole to form a complete cylinder, thereby reducing the space occupied by the plurality of spreading members 13.

Referring to fig. 3, 4 and 5, each lifting mechanism 20 includes a lifting driving member 21, a pushing member 22 and two rotating assemblies 23. The lifting driving member 21 may be an air cylinder, and the lifting driving member 21 is located at one side of the opening driving member 11. The pushing member 22 is connected to the lifting driving member 21, and moves in the Z-axis direction under the driving of the lifting driving member 21.

The two rotating assemblies 23 are respectively connected to the two connecting pieces 12, and each rotating assembly 23 is used for driving the spreader 13 to move up and down along the Z-axis direction. The rotation assembly 23 includes a rotation member 231 and an elastic member 232. The rotating member 231 includes a rotating gear 2311, a pushing rod 2312 and a limiting block 2313, the connecting member 12 is provided with a yielding groove 122, and the rotating gear 2311 is rotatably connected to the connecting member 12 and is accommodated in the yielding groove 122; the spreader 13 further includes a rack portion 134, the rack portion 134 is connected to the spreader body 131, and the rotation gear 2311 is engaged with the rack portion 134. The pushing rod 2312 is connected to the rotating gear 2311, and an end of the pushing rod 2312 away from the rotating gear 2311 is used for abutting against the pushing piece 22.

The connecting piece 12 is provided with a protruding part 123 protruding towards one side of the rotating piece 231, and the protruding part 123 is arranged on the groove wall of the yielding groove 122. The limiting block 2313 is disposed on a side of the pushing rod 2312 facing the protruding portion 123, and the limiting block 2313 is used for abutting against the protruding portion 123 to limit the rotation angle of the rotating gear 2311.

The elastic member 232 may be a spring, two ends of the elastic member 232 are respectively abutted against the pushing rod 2312 and the connecting member 12, the elastic member 232 is used for pushing the pushing rod 2312 to reset, and when the pushing rod 2312 resets, the rotating gear 2311 drives the propping member 13 to descend.

When the lifting mechanism 20 needs to drive the spreader 13 to lift, the lifting driving member 21 drives the pushing member 22 to move toward the connecting member 12, and the pushing member 22 abuts against the pushing rod 2312 to push the pushing rod 2312 to move, so that the pushing rod 2312 can drive the rotation gear 2311 to rotate, and the spreader 13 is lifted due to the engagement of the rotation gear 2311 with the rack portion 134. When the pushing member 22 pushes the pushing rod 2312, the yielding groove 122 accommodates the pushing member 22, and the yielding groove 122 yields the pushing member 22 to prevent the pushing member 22 from interfering with the connecting member 12.

When the lifting driving member 21 drives the opening member 13 to move away from the connecting member 12, the elastic member 232 drives the pushing rod 2312 to reset, and at this time, the pushing rod 2312 drives the rotating gear 2311 to rotate, and the rotating gear 2311 drives the opening member 13 to descend. When the stopper 2313 abuts against the boss 123 on the connection member 12, the rotation of the rotation member 231 is stopped, and at this time, the movement of the prop-open member 13 is stopped.

In order to reduce the wear between the pushing member 22 and the rotating member 231, the end of the pushing member 22 away from the lifting driving member 21 is provided with a pushing inclined surface 221, the end of the pushing rod 2312 away from the rotating gear 2311 is provided with a pushing curved surface 2314, when the pushing inclined surface 221 abuts against the pushing curved surface 2314, the pushing rod 2312 rotates relative to the connecting member 12, the pushing curved surface 2314 follows the pushing rod 2312 to rotate and rolls relative to the pushing inclined surface 221, and the pushing inclined surface 221 and the pushing curved surface 2314 are in a rolling friction form, so that the wear between the pushing member 22 and the rotating member 231 is reduced.

Referring to fig. 2, the moving mechanism 30 includes two moving driving members 31, the two moving driving members 31 are disposed on the sliding mechanism 40 at intervals, and the two moving driving members 31 are respectively connected with the two expanding driving members 11 for driving the corresponding expanding driving members 11 to move. The two expanding driving members 11 can be separated from each other under the driving of the two moving driving members 31, so that the two expanding driving members 11 drive the corresponding expanding members 13 to expand the elastic coil 200 in the Y-axis direction through the corresponding connecting members 12.

Referring to fig. 1, the sliding mechanism 40 includes two guide rails 41 and a sliding seat 42. The two guide rails 41 are disposed perpendicular to each other and slidably connected together, and the two guide rails 41 extend in the X-axis and Y-axis directions, respectively. For example, a slider 43 is disposed between the two rails 41, the slider 43 is slidably connected to one of the rails 41, and the slider 43 is fixedly connected to the other rail 41.

The sliding seat 42 is slidably connected to one of the guide rails 41, and the sliding seat 42 is used for supporting the opening mechanism 10 and the moving driving member 31. The two opening mechanisms 10 are slidably connected to the sliding seat 42 along the Y-axis direction, and the two moving driving members 31 are connected to the sliding seat 42 and are respectively located at two opposite sides of the two opening mechanisms 10.

The sliding mechanism 40 serves as a position adjusting mechanism, and when the elastic coil assembly device 100 removes the elastic coil 200 from the carrier 400, the position of the spreader mechanism 10 can be adjusted by the two guide rails 41 to transfer the elastic coil 200 to the workpiece 300.

The elastic coil assembly device 100 operates as follows:

firstly, the position of the spreader 13 is adjusted by sliding the sliding block 43 between the sliding seat 42 and the two guide rails 41, so that the spreader 13 is aligned with the elastic coil 200; then, the lifting driving member 21 drives the pushing member 22 to be far away from the connecting member 12, and at this time, the four rotating members 231 on the two opening mechanisms 10 drive the corresponding opening members 13 to descend and insert into the elastic coil 200; next, the two moving drivers 31 drive the corresponding spreader mechanisms 10 to move so as to move the two spreader mechanisms 10 away from each other, thereby causing the four spreaders 13 to spread the elastic coil 200 in the Y-axis direction, the elastic coil 200 being as shown in fig. 2; the opening driving member 11 drives the corresponding two connecting members 12 to be far away from each other, so that the connecting members 12 drive the corresponding opening members 13 to move along the X-axis direction, at this time, the four opening members 13 simultaneously open the elastic coil 200 in the X-axis and Y-axis directions, so that the elastic coil 200 is rectangular, and the elastic coil 200 is shown in fig. 3; finally, the lifting driving member 21 drives the pushing member 22 to move towards the connecting member 12, so that the pushing member 22 pushes the corresponding rotating member 231, and the rotating member 231 drives the corresponding expanding member 13 to lift up so as to disengage the elastic coil 200 from the carrier 400, thereby completing the operation of grabbing the elastic coil 200.

When the elastic coil assembly device 100 needs to assemble the elastic coil 200 on the workpiece 300, the position of the elastic coil 200 is adjusted by the sliding mechanism 40, then the lifting driving piece 21 drives the pushing piece 22 to move away from the connecting piece 12, the elastic piece 232 pushes the rotating piece 231 to rotate, and the rotating piece 231 drives the supporting piece 13 to descend, so that the elastic coil 200 is sleeved on the outer side of the workpiece 300; then, the spreader driving member 11 drives the corresponding two connecting members 12 to approach each other, and the two connecting members 12 drive the two spreader members 13 to rebound in the X-axis direction, so that a partial region of the elastic coil 200 can be hooked in a groove on the workpiece 300 for mounting the elastic coil 200, as shown in fig. 6. At this time, the lifting driving member 21 drives the pushing member 22 to move toward the connecting member 12 again, so that the pushing member 22 pushes the corresponding rotating member 231, and the rotating member 231 drives the corresponding expanding member 13 to lift up, so that the elastic coil 200 is separated from the expanding member 13 and sleeved on the workpiece 300.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application 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.

Finally, it should be noted that the above embodiments are merely for illustrating the technical solution of the present application and not for limiting, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application.

Claims (10)

1. An elastic coil assembly device for sleeving an elastic coil to a workpiece to be assembled, comprising:

a moving mechanism;

two oppositely arranged opening mechanisms, each opening mechanism comprises:

the opening driving piece is connected with the moving mechanism and moves along a first direction under the driving of the moving mechanism;

the two parallel connecting pieces are connected with the opening driving piece and are mutually far away or close to each other along the second direction under the driving of the opening driving piece;

the two stretching pieces are used for stretching the elastic coil and are respectively connected with the two connecting pieces in a sliding manner along a third direction, and the two stretching pieces are far away from or close to each other along the second direction along with the two connecting pieces;

the two lifting mechanisms are respectively connected with two propping pieces in each propping mechanism, and each lifting mechanism is used for driving the corresponding two propping pieces to lift along the third direction;

when the moving mechanism drives the two expanding driving members to be far away from each other so that the elastic coil is expanded in the first direction, each expanding driving member drives the corresponding two connecting members to be far away from each other so that the corresponding two expanding members expand the elastic coil in the second direction; after the elastic coil is arranged around the workpiece, each opening driving piece drives the corresponding two connecting pieces to approach each other so that the elastic coil rebounds in the second direction, and the two lifting mechanisms drive the corresponding two opening pieces to ascend so that the elastic coil is separated from the opening pieces and sleeved on the workpiece.

2. The elastic coil assembly device of claim 1 wherein,

the lifting mechanism comprises:

the lifting driving piece is arranged on one side of the opening driving piece;

the pushing piece is connected with the lifting driving piece and moves under the driving of the lifting driving piece;

the two rotating assemblies are respectively connected to the two connecting pieces and meshed with the two supporting pieces, and the rotating assemblies rotate under the pushing of the pushing pieces and drive the corresponding supporting pieces to lift along the third direction.

3. The elastic coil assembly device of claim 2, wherein,

the rack part is arranged on the spreader;

the rotating assembly includes:

the rotating piece comprises a rotating gear and an abutting push rod connected with the rotating gear, the rotating gear is rotatably connected with the connecting piece and meshed with the rack part, and the abutting push rod is used for abutting against the abutting push piece so as to drive the rotating gear to rotate under the abutting push of the abutting push piece, so that the supporting piece rises along the third direction;

the two ends of the elastic piece are respectively connected with the connecting piece and the pushing rod, the pushing rod is reset under the elastic action of the elastic piece and enables the rotary gear to rotate, and the rotary gear drives the opening piece to descend downwards along the third direction.

4. The elastic coil assembly device of claim 3 wherein,

the pushing piece is provided with a pushing inclined plane, the pushing rod is provided with a pushing curved surface, and the pushing piece pushes the pushing curved surface through the pushing inclined plane, so that the pushing curved surface drives the pushing rod to move.

5. The elastic coil assembly device of claim 3 wherein,

a convex part is convexly arranged on one side of the connecting piece, which faces the rotating piece;

the rotating piece further comprises a limiting block, the limiting block is arranged on one side, facing the protruding portion, of the pushing rod, and the limiting block is used for abutting against the protruding portion to limit the rotating angle of the rotating gear.

6. The elastic coil assembly device of claim 1 wherein,

the moving mechanism comprises two moving driving parts, and the two moving driving parts are respectively connected with the two expanding driving parts so as to drive the corresponding expanding driving parts to move.

7. The elastic coil assembly device of claim 1, further comprising a sliding mechanism comprising:

the two guide rails are arranged perpendicular to each other and are connected in a sliding manner, and extend along the first direction and the second direction respectively;

the sliding seat is connected to one of the guide rails in a sliding manner, the two spreading mechanisms are arranged on the sliding seat at intervals, the two movable driving parts are connected to the sliding seat at intervals, and the sliding seat moves along the first direction or the second direction along the two spreading mechanisms under the guiding action of the two guide rails.

8. The elastic coil assembly device of claim 1 wherein,

the spreader includes:

a spreader body slidably coupled to the connector;

and the expanding part is connected with the expanding piece main body, and the cross section area of the expanding part is smaller than that of the expanding piece main body and is used for being inserted into the elastic coil to expand the elastic coil.

9. The elastic coil assembly device of claim 8 wherein,

the cross section shape of the expanding part is semicircular, the expanding part is provided with a plane and a curved surface connected with the plane, and the planes of the two expanding parts are abutted under the drive of the expanding driving piece.

10. The elastic coil assembly device of claim 3 wherein,

the connecting piece is provided with a yielding groove, and the yielding groove is configured to accommodate the pushing piece when the pushing piece pushes the pushing rod.