CN210024289U

CN210024289U - Workpiece tray

Info

Publication number: CN210024289U
Application number: CN201920769336.2U
Authority: CN
Inventors: 王哲; 贺凡波; 陆钧; 葛俊杰; 马俊超
Original assignee: Beijing Invispower Co Ltd
Current assignee: Hefei Yougan Technology Co.,Ltd.
Priority date: 2019-05-26
Filing date: 2019-05-26
Publication date: 2020-02-07
Anticipated expiration: 2029-05-26

Abstract

The utility model provides a workpiece tray, which comprises a bottom plate, a bedplate, a circuit board positioning device and a coil positioning device; the bedplate is arranged on the base plate to form a first bearing area positioned on the upper surface of the base plate and a second bearing area positioned on the upper surface of the bedplate; the circuit board positioning device is arranged on the second bearing area so as to fix the circuit board placed in the second bearing area; the coil positioning device is arranged on the first bearing area to fix the head part of the coil placed in the first bearing area so as to position the head part of the coil in the power connection hole of the circuit board. Therefore, when the coil and the circuit board are welded, the wire head part of the coil can be effectively fixed, and the wire head part or the whole wire head part of the coil is prevented from being separated from the electric connection hole to influence the welding quality. The problem of among the prior art welding tray can't fix the end of a thread position of coil when welding coil and circuit board thereby lead to the end of a thread part of coil or whole to deviate from in connecing the electric hole and influence welding quality is solved.

Description

Workpiece tray

Technical Field

The utility model relates to a workpiece tray.

Background

In the production process of the wireless charging module of the electric automobile, the wire end of the coil needs to be welded with the power connection hole at the edge of the circuit board, in the prior art, when welding operation is carried out, the coil and the circuit board are placed on the welding tray, the wire end of the coil is inserted into the power connection hole of the circuit board, and then the welding tray bearing the coil and the circuit board is placed into welding equipment for welding.

However, the existing welding tray cannot fix the wire end part of the coil, the condition that the wire end part or the whole wire end part of the coil is separated from the electric connection hole can occur in the actual operation process, and then the welded coil and the circuit board are not connected or are not reliably connected, so that the product can only be subjected to rework treatment, the production cost is increased, and the production efficiency is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a workpiece tray to thereby solve welding tray among the prior art and can't fix the end of a thread position of coil when welding coil and circuit board and lead to the end of a thread part of coil or whole from connecing the downthehole problem of deviating from and influence welding quality of connecing.

In order to achieve the above object, the present invention provides a workpiece tray, including: a base plate; the bedplate is arranged on the bottom plate to form a first bearing area positioned on the upper surface of the bottom plate and a second bearing area positioned on the upper surface of the bedplate; the first bearing area is used for bearing the coil, and the second bearing area is used for bearing the circuit board; the circuit board positioning device is arranged on the second bearing area and used for fixing the circuit board placed in the second bearing area; and the coil positioning device is arranged on the first bearing area and used for fixing the head part of the coil placed in the first bearing area so as to position the head part of the coil in the power connection hole of the circuit board.

Further, seted up the second spout on the second bearing area, circuit board positioner includes: the first positioning slide block and the second positioning slide block are arranged on the second sliding groove in a relatively sliding manner; and the tensioning mechanism is connected with the first positioning sliding block and the second positioning sliding block and used for pulling the first positioning sliding block and the second positioning sliding block to be close to each other so as to clamp and fix the circuit board when the circuit board is placed between the first positioning sliding block and the second positioning sliding block.

Further, the tightening mechanism includes: a first end of the pull rod is connected with the first positioning slide block, and a second end of the pull rod can relatively slide and penetrate through the second positioning slide block; the first locking buckle is hinged with the second end of the pull rod; wherein, first locking is detained and is had the first cam structure with the mutual butt of lateral wall of second location slider, and first locking is detained and has around its pin joint pivoted first rotational position and second rotational position, and when first locking is detained and is rotated to first rotational position, first cam structure pulling pull rod and promote the second simultaneously and fix a position the slider so that first location slider and second location slider are close to each other in order to press from both sides the fastening with the circuit board and fix.

Further, all seted up the slide opening on first location slider and the second location slider, the first end of pull rod can pass the slide opening of first location slider with sliding relatively, and the second end of pull rod can pass the slide opening of second location slider with sliding relatively, and straining device still includes: adjusting bolt, the first end of pull rod has the helicitic texture, adjusting bolt set up on the helicitic texture and with the interval between first location slider and the second location slider of regulation with the lateral wall butt of first location slider.

Further, the tightening mechanism further includes: the first spring is sleeved on the pull rod, and two ends of the first spring are respectively abutted against the inner side walls of the first positioning slide block and the second positioning slide block; when the first locking buckle rotates to the second rotating position, the first spring applies acting force towards two ends of the pull rod to the first positioning slide block and the second positioning slide block respectively so as to enable the first positioning slide block and the second positioning slide block to be away from each other.

Further, the upper surface of bottom plate and the adjacent lateral wall of platen form the step face, offer the constant head tank that is used for the line head portion of location coil on the step face, and coil positioner includes: the third positioning sliding block is slidably arranged in the first bearing area to slide along the direction close to or far away from the step surface; and the pressing mechanism is connected with the third positioning sliding block and used for pushing the third positioning sliding block to slide towards the step surface when the wire head of the coil is placed into the positioning groove so as to press the wire head of the coil in the positioning groove.

Further, the pressing mechanism includes: the second locking buckle is rotatably arranged in the first bearing area and is provided with a second cam structure, and the second cam structure is abutted against the side wall of the third positioning slide block, which is far away from the step surface; the second locking buckle is provided with a third rotating position and a fourth rotating position, and when the second locking buckle rotates to the third rotating position, the second cam structure pushes the third positioning slide block to slide towards the step surface so as to press the wire head of the coil in the positioning groove.

Furthermore, two opposite sliding bearing platforms are arranged on the first bearing area, first sliding grooves are formed in the two sliding bearing platforms, and third positioning sliding blocks are arranged on the two first sliding grooves and slide along the direction close to or far away from the step surface; the two second locking buckles are correspondingly hinged to the side walls of the two sliding bearing platforms so as to rotate around the hinged point between the third rotating position and the fourth rotating position.

Furthermore, a plurality of pressing protrusions are arranged on the third positioning sliding block, and the plurality of pressing protrusions are arranged at intervals along the extending direction of the third positioning sliding block; the third positioning slide block slides towards the direction of the step surface to enable the plurality of pressing protrusions to be correspondingly embedded into the plurality of positioning grooves so as to press the wire heads of the coils into the positioning grooves.

Furthermore, a movable cavity facing the step surface is formed in the third positioning slide block, a movable clamping block moving in the direction close to or far away from the step surface is arranged in the movable cavity, and the movable clamping block is connected with the inner side wall of the movable cavity through a plurality of second springs; the pressing protrusions are arranged on the movable clamping block at intervals along the extending direction of the movable clamping block so as to adjust the pressing force of the pressing protrusions on the coil heads of the coils.

The workpiece tray applying the technical scheme of the utility model comprises a bottom plate, a bedplate, a circuit board positioning device and a coil positioning device; the bedplate is arranged on the base plate to form a first bearing area positioned on the upper surface of the base plate and a second bearing area positioned on the upper surface of the bedplate; the first bearing area is used for bearing the coil, and the second bearing area is used for bearing the circuit board; the circuit board positioning device is arranged on the second bearing area and used for fixing the circuit board placed in the second bearing area; the coil positioning device is arranged on the first bearing area and used for fixing the head of the coil placed in the first bearing area so as to position the head of the coil in the power connection hole of the circuit board. Therefore, when the coil and the circuit board are welded, the wire head part of the coil can be effectively fixed, and the wire head part or the whole wire head part of the coil is prevented from being separated from the electric connection hole to influence the welding quality. The problem of among the prior art welding tray can't fix the end of a thread position of coil when welding coil and circuit board thereby lead to the end of a thread part of coil or whole to deviate from in connecing the electric hole and influence welding quality is solved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic top view of an alternative workpiece tray according to an embodiment of the present invention;

fig. 2 is a schematic side view of an alternative circuit board positioning device for a workpiece tray according to an embodiment of the present invention; and

fig. 3 is a schematic side view of an alternative coil positioning device for a work pallet according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a base plate; 11. a first bearing area; 12. a sliding bearing platform; 13. a first chute; 20. a platen; 21. a second bearing area; 22. a second chute; 23. positioning a groove; 30. a circuit board positioning device; 31. a first positioning slide block; 32. a second positioning slide block; 33. a tensioning mechanism; 331. a pull rod; 332. a first locking buckle; 333. a first cam structure; 334. adjusting the bolt; 335. a first spring; 336. a first handle; 34. a chuck; 35. a third spring; 40. a coil positioning device; 41. a third positioning slide block; 42. a hold-down mechanism; 421. a second locking buckle; 422. a second cam structure; 423. a second handle; 43. compressing the bulge; 44. a movable cavity; 45. a movable clamping block; 46. a second spring.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The workpiece tray according to the embodiment of the present invention, as shown in fig. 1, includes a bottom plate 10, a platen 20, a circuit board positioning device 30, and a coil positioning device 40; the bedplate 20 is arranged on the base plate 10 to form a first bearing area on the upper surface of the base plate 10 and a second bearing area on the upper surface of the bedplate 20; the first bearing area is used for bearing the coil, and the second bearing area is used for bearing the circuit board; the circuit board positioning device 30 is arranged on the second bearing area, and the circuit board positioning device 30 is used for fixing the circuit board placed in the second bearing area; the coil positioning device 40 is disposed on the first carrying area, and the coil positioning device 40 is used for fixing the head portion of the coil placed on the first carrying area so as to position the head portion of the coil in the power receiving hole of the circuit board. Therefore, when the coil and the circuit board are welded, the wire head part of the coil can be effectively fixed, the wire head part or the whole wire head part of the coil is prevented from being separated from the electric connection hole to influence the welding quality, the reworking of products is reduced, the production cost is effectively reduced, and the production efficiency is improved. The problem of among the prior art welding tray can't fix the end of a thread position of coil when welding coil and circuit board thereby lead to the end of a thread part of coil or whole to deviate from in connecing the electric hole and influence welding quality is solved.

In specific implementation, since the upper surface of the bedplate 20 is higher than the upper surface of the base plate 10, a step structure is formed on one side of the bedplate 20 close to the coil positioning device 40. The coil positioning means 40 is disposed adjacent to the step structure so that the thread end of the coil is fixed.

The second bearing area 21 on the upper surface of the bedplate 20 is provided with two second sliding chutes 22, and the two second sliding chutes 22 are arranged in parallel. The circuit board positioning device 30 comprises a first positioning sliding block 31, a second positioning sliding block 32 and a tensioning mechanism 33, the lower parts of the first positioning sliding block 31 and the second positioning sliding block 32 are respectively provided with a sliding strip structure matched with the two second sliding grooves 22, and the two sliding strip structures are correspondingly embedded into the two second sliding grooves 22, so that the first positioning sliding block 31 and the second positioning sliding block 32 can freely slide along the extending direction of the second sliding grooves 22.

As shown in fig. 1 and 2, the tensioning mechanism 33 includes a pull rod 331 and a first locking buckle 332, the pull rod 331 is of a sliding rod structure except for end portions at two ends, the first positioning slider 31 and the second positioning slider 32 are both provided with sliding holes matched with the pull rod 331, a first end of the pull rod 331 can relatively slidably pass through the sliding hole of the first positioning slider 31, a second end of the pull rod 331 can relatively slidably pass through the sliding hole of the second positioning slider 32, an end portion of the first end of the pull rod 331 is provided with a threaded structure with a certain length, the threaded structure is provided with a rotatably adjustable adjusting bolt 334, and the adjusting bolt 334 abuts against an outer side wall of the first positioning slider 31. The first locking buckle 332 is hinged with the second end of the pull rod 331; the first locking buckle 332 comprises a first cam structure 333 abutting against the outer side wall of the second positioning slider 32, and a first handle 336 provided on the first cam structure 333, the first cam structure 333 is rotatably connected to the second end of the pull rod 331 by a connecting pin shaft, the connecting pin shaft passes through the pull rod 331 along the radial direction of the pull rod 331, the first cam structure 333 is rotated by pulling the first handle 336, the first lock catch 332 has a first rotational position and a second rotational position that rotate about the connection pin axis, and when the first lock catch 332 is rotated to the first rotational position, the convex part of the first cam structure 333 is against the outer side wall of the second positioning slide block 32, the first cam structure 333 pulls the pull rod 331 and pushes the second positioning slide block 32 simultaneously, so that the first positioning slide block 31 and the second positioning slide block 32 are close to each other, and the circuit board can be clamped and fixed by putting the circuit board between the first positioning slide block 31 and the second positioning slide block 32 in advance.

In the non-working state, the distance between the first positioning slide block 31 and the second positioning slide block 32 in the initial state can be adjusted by rotating the adjusting bolt 334, so that the circuit boards with different sizes can be adapted.

In order to rapidly detach the circuit board after the welding is completed, further, the tensioning mechanism 33 further includes a first spring 335, the first spring 335 is sleeved on the pull rod 331, two ends of the first spring 335 are respectively abutted to inner side walls of the first positioning sliding block 31 and the second positioning sliding block 32, and the first spring 335 applies acting force towards two ends of the pull rod 331 to the first positioning sliding block 31 and the second positioning sliding block 32 respectively. When the first locking buckle 332 rotates to the second rotation position, that is, the smaller diameter part of the first cam structure 333 contacts with the outer sidewall of the second positioning slider 32, under the action of the first spring 335, the first positioning slider 31 and the second positioning slider 32 automatically move away from each other, so as to loosen the circuit board and facilitate the detachment.

In order to quickly mount a circuit board and prevent the circuit board from being damaged in the clamping force process when the circuit board is positioned, the sections of the first positioning slide block 31 and the second positioning slide block 32 are both of an L-shaped structure, so that clamping grooves for clamping the circuit board are formed on the first positioning slide block 31 and the second positioning slide block 32, and when the circuit board is placed, the bottom surfaces of the clamping grooves can support two ends of the circuit board, so that the circuit board is kept horizontal. The two opposite side walls of the clamping grooves of the first positioning slide block 31 and the second positioning slide block 32 are respectively provided with a movable clamping head 34, and the two clamping heads 34 are oppositely arranged along the horizontal direction and are arranged on the first positioning slide block 31 and the second positioning slide block 32 through sliding parts, so that the two clamping heads 34 can be relatively close to or far away from each other. The rear of each clip 34 is provided with a third spring 35, and the movement of the two clips 34 away from each other compresses the third spring 35.

Before welding, the two ends of the circuit board are placed on the clamping grooves of the first positioning sliding block 31 and the second positioning sliding block 32, the first positioning sliding block 31 and the second positioning sliding block 32 move relatively close to each other by rotating the first locking buckle 332, and the two clamping heads 34 gradually contact with the circuit board and apply clamping force to clamp the circuit board in the process that the first positioning sliding block 31 and the second positioning sliding block 32 are close to each other. The clamping force on the circuit board can be adjusted by arranging the two clamping heads 34 and the third spring 35, and the circuit board is prevented from being damaged due to overlarge clamping force.

Further, as shown in fig. 1 and 3, a side wall of the upper surface of the bottom plate 10 adjacent to the platen 20 forms a step surface, and a positioning groove 23 for positioning a bobbin of the coil is formed on the step surface. The coil positioning device 40 includes a third positioning slider 41 and a pressing mechanism 42, the third positioning slider 41 being slidably disposed in the first bearing area 11 to slide in a direction approaching or separating from the step surface; the pressing mechanism 42 is connected to the third positioning slider 41, and the pressing mechanism 42 is configured to push the third positioning slider 41 to slide toward the step surface when the thread end of the coil is placed in the positioning groove 23, so as to press the thread end of the coil in the positioning groove 23.

Specifically, the first bearing area 11 is provided with two opposite sliding bearing platforms 12, the extending directions of the two sliding bearing platforms 12 are perpendicular to the extending direction of the step surface, the two sliding bearing platforms 12 are both provided with first sliding grooves 13, two ends of the third positioning sliding block 41 are respectively provided with sliding strip structures matched with the first sliding grooves 13, and the two sliding strip structures are correspondingly installed in the two first sliding grooves 13, so that the third positioning sliding block 41 can freely slide along the direction close to or far from the step surface

The pressing mechanism 42 includes two second locking buckles 421, and the two second locking buckles 421 are correspondingly hinged on the side walls of the two sliding bearing platforms 12 to rotate around the hinge points between the third rotating position and the fourth rotating position. The second locking buckle 421 has a second cam structure 422 and a second handle 423 arranged on the second cam structure 422, and the second cam structure 422 is connected to the outer side wall of the sliding bearing platform 12 by a connecting pin shaft in a rotatable manner, so that the second cam structure 422 abuts against the side wall of the third positioning sliding block 41 away from the step surface; by pulling the second handle 423 to drive the second cam structure 422 to rotate, when the second locking buckle 421 rotates to the third rotation position, the protruding portion of the second cam structure 422 extrudes and pushes the third positioning slider 41 to slide toward the step surface, so as to press the wire end of the coil in the positioning slot 23.

In order to be able to adapt to the structure of the thread end portion of the coil, the width of the opening portion of the positioning groove 23 is larger than the width of the bottom portion thereof. In addition, a movable cavity 44 is formed in the side wall, facing the step surface, of the third positioning slider 41, a movable clamping block 45 moving in the direction close to or far from the step surface is arranged in the movable cavity 44, and the movable clamping block 45 is connected with the inner side wall of the movable cavity 44 through a plurality of second springs 46; the side wall of the movable clamping block 45 facing the step surface is provided with a plurality of pressing protrusions 43, and the pressing protrusions 43 are arranged on the movable clamping block 45 at intervals along the extending direction of the movable clamping block 45. The positioning grooves 23 on the step surface are also multiple, the positioning grooves 23 are arranged at intervals along the extending direction of the step surface, and the positioning grooves 23 correspond to the pressing protrusions 43 one by one.

Before welding, the coil is placed in the first bearing area 11 of the base plate 10, and the third positioning slider 41 is supported by the two sliding bearing platforms 12, so that a certain distance is reserved between the lower surface of the third positioning slider 41 and the upper surface of the base plate 10. The wire head of the coil passes through the gap between the third positioning slide block 41 and the bottom plate 10 and is placed in the corresponding positioning groove 23 on the step surface, and the head end of the wire head of the coil is inserted into the power connection hole of the circuit board. When the two second locking buckles 421 are turned to the limit position, the pressing protrusions 43 completely press the thread ends of the coils in the positioning grooves 23.

In the process that each pressing protrusion 43 presses the coil wire head, the movable clamping block 45 compresses each second spring 46 by the reaction force, and the pressing force of each pressing protrusion 43 on the coil wire head can be adjusted by arranging each second spring 46, so that the coil wire head is prevented from being flattened due to the excessive pressing force.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A workpiece tray, comprising:

a base plate (10);

a platen (20) disposed on the base plate (10) to form a first bearing zone (11) on an upper surface of the base plate (10) and a second bearing zone (21) on an upper surface of the platen (20); the first bearing area is used for bearing a coil, and the second bearing area is used for bearing a circuit board;

the circuit board positioning device (30) is arranged on the second bearing area (21), and the circuit board positioning device (30) is used for fixing the circuit board placed in the second bearing area (21);

the coil positioning device (40) is arranged on the first bearing area (11), and the coil positioning device (40) is used for fixing the head of the coil placed on the first bearing area (11) so as to position the head of the coil in the electric connection hole of the circuit board.

2. The workpiece tray according to claim 1, wherein a second sliding groove (22) is formed in the second carrying area (21), and the circuit board positioning device (30) comprises:

the first positioning slide block (31) and the second positioning slide block (32) are arranged on the second sliding groove (22) in a relatively sliding manner;

the tensioning mechanism (33) is connected with the first positioning sliding block (31) and the second positioning sliding block (32), and the tensioning mechanism (33) is used for pulling the first positioning sliding block (31) and the second positioning sliding block (32) to be close to each other to clamp and fix the circuit board when the circuit board is placed between the first positioning sliding block (31) and the second positioning sliding block (32).

3. Workpiece tray according to claim 2, characterized in that the tensioning mechanism (33) comprises:

a pull rod (331), a first end of the pull rod (331) is connected with the first positioning slide block (31), and a second end of the pull rod (331) can relatively slide and pass through the second positioning slide block (32);

a first locking buckle (332), wherein the first locking buckle (332) is hinged with the second end of the pull rod (331);

the first locking buckle (332) is provided with a first cam structure (333) which is abutted against the outer side wall of the second positioning slide block (32), the first locking buckle (332) is provided with a first rotating position and a second rotating position which rotate around a hinge point of the first locking buckle, and when the first locking buckle (332) rotates to the first rotating position, the first cam structure (333) pulls the pull rod (331) and simultaneously pushes the second positioning slide block (32) to enable the first positioning slide block (31) and the second positioning slide block (32) to approach each other so as to clamp and fix the circuit board.

4. The workpiece tray according to claim 3, wherein the first positioning slider (31) and the second positioning slider (32) are provided with slide holes, a first end of the pull rod (331) can relatively slidably pass through the slide hole of the first positioning slider (31), a second end of the pull rod (331) can relatively slidably pass through the slide hole of the second positioning slider (32), and the tensioning mechanism (33) further comprises:

an adjusting bolt (334), a first end of the pull rod (331) having a thread structure, the adjusting bolt (334) being disposed on the thread structure and abutting against an outer side wall of the first positioning slider (31) to adjust a distance between the first positioning slider (31) and the second positioning slider (32).

5. Workpiece tray according to claim 3, characterized in that the tensioning mechanism (33) further comprises:

the first spring (335) is sleeved on the pull rod (331), and two ends of the first spring (335) are respectively abutted against the inner side walls of the first positioning slide block (31) and the second positioning slide block (32);

when the first locking buckle (332) rotates to the second rotating position, the first spring (335) applies acting force towards two ends of the pull rod (331) to the first positioning slide block (31) and the second positioning slide block (32) respectively so as to enable the first positioning slide block (31) and the second positioning slide block (32) to be far away from each other.

6. The workpiece tray according to claim 1, wherein a side wall of an upper surface of the bottom plate (10) adjacent to the platen (20) forms a step surface, the step surface is provided with a positioning groove (23) for positioning a head portion of the coil, and the coil positioning device (40) comprises:

a third positioning slider (41), wherein the third positioning slider (41) is slidably arranged in the first bearing area (11) to slide along a direction close to or far away from the step surface;

and the pressing mechanism (42) is connected with the third positioning sliding block (41), and the pressing mechanism (42) is used for pushing the third positioning sliding block (41) to slide towards the direction of the step surface when the thread head of the coil is placed into the positioning groove (23) so as to press the thread head of the coil into the positioning groove (23).

7. Workpiece tray according to claim 6, characterized in that the pressing mechanism (42) comprises:

the second locking buckle (421) is rotatably arranged in the first bearing area (11), the second locking buckle (421) is provided with a second cam structure (422), and the second cam structure (422) is abutted against the side wall, away from the step surface, of the third positioning slide block (41);

the second locking buckle (421) is provided with a third rotating position and a fourth rotating position, and when the second locking buckle (421) rotates to the third rotating position, the second cam structure (422) pushes the third positioning slider (41) to slide towards the direction of the step surface so as to press the wire head of the coil in the positioning groove (23).

8. The workpiece tray according to claim 7, wherein the first bearing area (11) is provided with two opposite sliding bearing platforms (12), the two sliding bearing platforms (12) are respectively provided with a first sliding chute (13), and the third positioning sliding block (41) is arranged on the two first sliding chutes (13) to slide along a direction close to or far away from the step surface;

the number of the second locking buckles (421) is two, and the two second locking buckles (421) are correspondingly hinged to the side walls of the two sliding bearing platforms (12) to rotate around the hinged point between a third rotating position and a fourth rotating position.

9. The workpiece tray according to claim 6, wherein the third positioning slide (41) is provided with a plurality of pressing protrusions (43), and the plurality of pressing protrusions (43) are arranged at intervals along the extending direction of the third positioning slide (41);

the positioning grooves (23) are formed in multiple numbers, the positioning grooves (23) are formed at intervals along the extending direction of the step surface, and the third positioning sliding block (41) slides towards the step surface so that the pressing protrusions (43) are correspondingly embedded into the positioning grooves (23) to press the wire ends of the coils into the positioning grooves (23).

10. The workpiece tray according to claim 9, wherein the third positioning slider (41) is provided with a movable cavity (44) facing the step surface, a movable clamping block (45) moving in a direction close to or far away from the step surface is arranged in the movable cavity (44), and the movable clamping block (45) is connected with the inner side wall of the movable cavity (44) through a plurality of second springs (46);

wherein the pressing protrusions (43) are arranged on the movable clamping block (45) at intervals along the extending direction of the movable clamping block (45) to adjust the pressing force of the pressing protrusions (43) on the coil head part of the coil.