Tray positioning mechanism and braiding machine

Abstract

The utility model provides a material tray positioning mechanism and a braiding machine, and relates to the technical field of electronic device packaging, the material tray positioning mechanism comprises a positioning support, a positioning clamping jaw assembly and a clamping clamping jaw assembly, the positioning support is provided with a supporting surface used for supporting a material tray; the positioning clamping jaw assembly and the clamping clamping jaw assembly are arranged in the first direction in a spaced mode and movably installed on the positioning support so as to limit the material disc to the supporting face or loosen the material disc. According to the charging tray positioning mechanism provided by the utility model, the technical problem that the accuracy of a detection result is influenced due to the fact that the positioning precision is easily reduced when a deformed charging tray is positioned by a charging tray positioning mechanism in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic device packaging, in particular to a material tray positioning mechanism and a tape braiding machine. Background Art

[0002] With the continuous upgrading, refinement and highly integrated development of electrical products, taping machines are widely used due to their reliable performance and convenient operation.

[0003] During the operation of the tape machine, the electronic components are placed on the tray, the tray positioning mechanism positions the tray, and the electronic components are transported to the designated position through the conveying mechanism. In actual production, the tray needs to be baked at high temperature before production. The high temperature environment will cause the tray to deform. When the existing tray positioning mechanism positions the deformed tray, it is easy to cause the positioning accuracy to become low, thereby affecting the accuracy of the test results. Utility Model Content

[0004] The purpose of the utility model is to provide a tray positioning mechanism and a tape braiding machine to alleviate the technical problem in the related art that when the tray positioning mechanism positions a deformed tray, the positioning accuracy is easily reduced, thereby affecting the accuracy of the detection result.

[0005] In a first aspect, the tray positioning mechanism provided by the utility model comprises: a positioning bracket, a positioning jaw assembly and a clamping jaw assembly, wherein the positioning bracket has a supporting surface for supporting the tray;

[0006] The positioning jaw assembly and the clamping jaw assembly are arranged at intervals along the first direction and are movably mounted on the positioning bracket respectively to limit the material tray to the support surface or release it.

[0007] Optionally, the positioning jaw assembly comprises a positioning jaw, a lifting limiter and a positioning drive member, the lifting limiter is provided with a limiter groove, and from one end close to the clamping jaw assembly to one end away from the clamping jaw, the limiter groove is inclined towards the support surface; the positioning jaw is provided with a limiter, and the limiter is slidably matched with the limiter groove;

[0008] The driving end of the positioning driver is rotatably connected to the positioning clamp, and the positioning driver is used to drive the limiting member to move toward the higher end or the lower end of the limiting groove, and the positioning end of the positioning clamp is correspondingly opposite to or staggered with the supporting surface.

[0009] Optionally, the positioning drive member includes a positioning lifting drive member, a driving end of the positioning lifting drive member is rotatably connected to the positioning clamp, and a connection point is located between the positioning end of the positioning clamp and the limit member.

[0010] Optionally, the positioning lifting drive member includes a positioning linear drive member, a follower and a positioning transmission member, the follower is located between the positioning jaw and the clamping jaw assembly, and is provided with a driving groove, from one end close to the clamping jaw assembly to one end away from the clamping jaw assembly, the driving groove is inclined, the driving end of the positioning linear drive member is connected to a driving rod, and the driving rod is slidably matched with the driving groove;

[0011] One end of the positioning transmission member is fixedly connected to the follower, and the other end of the positioning transmission member is rotationally connected to the positioning clamp. The positioning linear drive member drives the drive rod to move toward the lower end or the higher end of the drive groove, and the follower drives the positioning transmission member to rise or fall accordingly.

[0012] Optionally, the positioning linear drive member comprises a pneumatic cylinder or a hydraulic cylinder, and when the piston rod of the positioning linear drive member is located at the extended position, the drive rod is driven to be located at the lower end of the drive slot.

[0013] Optionally, the positioning clamp assembly further comprises a positioning column, the positioning column is perpendicular to the supporting surface, and the follower is slidably matched with the positioning column.

[0014] Optionally, the clamping jaw assembly includes a clamping jaw and a clamping linear drive, the clamping jaw is rotationally connected to the positioning bracket, and the driving end of the clamping linear drive is transmission connected to the clamping jaw for driving the clamping end of the clamping jaw to be opposite to or staggered with the support surface.

[0015] Optionally, the driving end of the clamping linear driving member is connected to a transmission block, and the transmission block is provided with a transmission groove extending in a direction perpendicular to the supporting surface;

[0016] A transmission wheel is installed at the lower end of the clamping jaw, and the transmission wheel is located in the transmission groove and slidably cooperates with the transmission groove.

[0017] Optionally, the positioning bracket is provided with a mounting cavity, and the positioning clamping jaw assembly and the clamping clamping jaw assembly are both mounted in the mounting cavity.

[0018] In a second aspect, the braiding machine provided by the utility model comprises a conveying mechanism and the above-mentioned tray positioning mechanism, and the conveying mechanism is transmission-connected to a positioning bracket in the tray positioning mechanism.

[0019] The tape braiding machine provided by the utility model includes a conveying mechanism and a tray positioning mechanism, wherein the tray positioning mechanism includes: a positioning bracket, a positioning jaw assembly and a clamping jaw assembly, the positioning bracket has a support surface for supporting the tray; the positioning jaw assembly and the clamping jaw assembly are arranged at intervals along the first direction, and are movably installed on the positioning bracket respectively, so as to limit the tray to the support surface or release it. When the tray is placed on the support surface, the positioning jaw assembly first positions one end of the tray, and then the clamping jaw assembly clamps the other end of the tray. Both the positioning jaw assembly and the clamping jaw assembly cooperate with the support surface to clamp the tray, which can correct the deformed tray, improve the positioning accuracy of the tray, and thus improve the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A schematic diagram of the structure of the tray positioning mechanism provided by an embodiment of the utility model at a first viewing angle;

[0022] Figure 2 A schematic diagram of the structure of the tray positioning mechanism provided by an embodiment of the utility model at a second viewing angle;

[0023] Figure 3 A schematic diagram of the cooperation between the positioning claw and the lifting limit member in the tray positioning mechanism provided in an embodiment of the utility model.

[0024] Icons: 100 - positioning bracket; 110 - supporting surface; 120 - mounting cavity; 210 - positioning clamp; 220 - lifting limit member; 221 - limiting groove; 222 - limiting wheel; 230 - positioning lifting drive member; 231 - positioning linear drive member; 232 - follower; 2321 - driving groove; 2322 - driving wheel; 233 - positioning transmission member; 234 - driving slider; 240 - positioning column; 300 - clamping clamp assembly; 310 - clamping clamp; 320 - clamping linear drive member; 330 - transmission block; 331 - transmission groove; 332 - transmission wheel; a - first direction; b - second direction. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figure 1 and Figure 2 As shown, the tray positioning mechanism provided by the embodiment of the utility model includes: a positioning bracket 100, a positioning jaw assembly and a clamping jaw assembly 300, the positioning bracket 100 has a supporting surface 110 for supporting the tray; the positioning jaw assembly and the clamping jaw assembly 300 are arranged at intervals along the first direction a, and are movably installed on the positioning bracket 100 respectively, so as to limit the tray to the supporting surface 110 or release it.

[0029] Specifically, the positioning bracket 100 is in a rectangular parallelepiped shape, and the long side is arranged along the first direction a. Figure 1 The upper surface shown is the support surface 110. The positioning jaw assembly and the clamping jaw assembly 300 are spaced apart along the length direction of the positioning bracket 100, and the positioning jaw assembly is movably mounted on one end of the positioning bracket 100, and the clamping jaw assembly 300 is movably mounted on the other end of the positioning bracket 100. The positioning jaw assembly and the clamping jaw assembly 300 cooperate to position the tray on the support surface 110.

[0030] When the material tray is placed on the support surface 110, the positioning jaw assembly first positions one end of the material tray, and then the clamping jaw assembly 300 clamps the other end of the material tray. Both the positioning jaw assembly and the clamping jaw assembly 300 cooperate with the support surface 110 to clamp the material tray, which can correct the deformed material tray and improve the positioning accuracy of the material tray, thereby improving the accuracy of the detection results.

[0031] The positioning jaw assembly includes a positioning jaw 210, a lifting limit member 220 and a positioning drive member. The lifting limit member 220 is provided with a limit groove 221. From one end close to the clamping jaw assembly 300 to the end away from the clamping jaw assembly 300, the limit groove 221 is inclined in the direction close to the support surface 110; the positioning jaw 210 is installed with a limit member, and the limit member and the limit groove 221 are slidably matched; the driving end of the positioning drive member is rotatably connected to the positioning jaw 210, and the positioning drive member is used to drive the limit member to move to the higher end or lower end of the limit groove 221, and the positioning end of the positioning jaw 210 is correspondingly opposite to or staggered with the support surface 110.

[0032] The positioning jaw 210 has a positioning end, and the positioning end extends out of the positioning bracket 100 from one end of the positioning bracket 100 away from the clamping jaw assembly 300. The lifting limiter 220 is fixedly connected to the positioning bracket 100 by bolts, and is located between the positioning jaw 210 and the clamping jaw assembly 300. The limiter groove 221 penetrates the lifting limiter 220 along the second direction b perpendicular to the first direction a, and from one end close to the clamping jaw assembly 300 to one end close to the positioning jaw 210, the limiter groove 221 is inclined in the direction close to the support surface 110. The limiter includes a limiter rod or a limiter wheel 222. In this embodiment, the limiter includes a limiter wheel 222, the axis of which extends along the second direction b, and the limiter wheel 222 is arranged in the limiter groove 221, and the circumferential surface of the limiter wheel 222 abuts against the inner wall of the limiter groove 221. The rotation axis of the connection point between the driving end of the positioning driving member and the positioning clamp 210 extends along the second direction b, and the positioning driving member drives the positioning clamp 210 to move, and the positioning clamp 210 drives the limiting wheel 222 to move toward the higher end or the lower end of the limiting groove 221, and the positioning end of the positioning clamp 210 is correspondingly opposite to or staggered with the support surface 110. Specifically, when the positioning driving member drives the positioning clamp 210 to drive the limiting wheel 222 to be located at the lower end of the limiting groove 221, the positioning clamp 210 is located in the release position, and when the positioning driving member drives the positioning clamp 210 to drive the limiting wheel 222 to move toward the higher end of the limiting groove 221, the positioning clamp 210 is raised, and at the same time, the positioning end of the positioning clamp 210 rotates toward the upper side of the support surface 110, so that the positioning clamp 210 moves to the clamping position, and the positioning end of the positioning clamp 210 cooperates with the support surface 110 to position and clamp the material tray. The above-mentioned structure of the positioning jaw assembly allows the positioning jaw 210 to rotate toward the locking position and move upward at the same time, thereby preventing the positioning jaw 210 from being unable to press on the upper surface of the material tray when the edge of the material tray is tilted.

[0033] As an embodiment, the limiting wheel 222 is rotatably connected to the middle part of the positioning jaw 210, the positioning drive can be set as a cylinder or a hydraulic cylinder, the positioning drive is arranged in the horizontal direction, and the piston rod of the positioning drive is rotatably connected to the end of the positioning jaw 210 away from the positioning end, the cylinder body of the positioning drive is hinged to the positioning bracket 100, and the hinge axis is extended along the second direction b. When the piston rod of the positioning drive is in the retracted position, the limiting wheel 222 is located at the lower end of the limiting groove 221, and the positioning jaw 210 is in the loose position. When the piston rod of the positioning drive is extended, the positioning jaw 210 is driven to drive the limiting wheel 222 to move to the higher end of the limiting groove 221, and the positioning jaw 210 rotates around the axis of the limiting wheel 222, and the positioning end of the positioning jaw 210 rotates toward the upper side of the support surface 110, so that the positioning jaw 210 moves to the clamping position, and the positioning jaw 210 cooperates with the support surface 110 to position and clamp the material tray.

[0034] In one embodiment of the present invention, the positioning drive member includes a positioning lifting drive member 230, the driving end of the positioning lifting drive member 230 is rotatably connected to the positioning jaw 210, and the connection point is located between the positioning end of the positioning jaw 210 and the limit member.

[0035] The lower end of the positioning jaw 210 is slidably matched with the limiting groove 221 through the limiting wheel 222, and the middle part of the positioning jaw 210 is rotationally connected to the positioning lifting drive member 230, and the rotation axis extends along the second direction b. The positioning lifting drive member 230 is used to drive the positioning jaw 210 to move between the clamping position and the release position. Specifically, when the positioning lifting drive 230 drives the middle part of the positioning jaw 210 to be at the lowest position, the limiting wheel 222 is located at the lower end of the limiting slot 221. At this time, the positioning jaw 210 is in the released position. When the positioning lifting drive 230 drives the middle part of the positioning jaw 210 to move upward, the limiting wheel 222 moves toward the higher end of the limiting slot 221, that is, the lower end of the positioning jaw 210 moves along the horizontal direction toward the middle part of the positioning jaw 210. While the positioning jaw 210 rises, the positioning end of the positioning jaw 210 rotates around the connection point between the positioning jaw 210 and the positioning lifting drive 230 toward the top of the support surface 110, so that the positioning jaw 210 moves to the clamping position. The positioning jaw 210 cooperates with the support surface 110 to position and clamp the material tray. The arrangement of the above-mentioned structure of the positioning jaw assembly enables the positioning jaw 210 to rotate toward the locking position and move upward at the same time, thereby preventing the positioning jaw 210 from being unable to press on the upper surface of the material tray when the edge of the material tray is tilted; in addition, the positioning jaw 210 is driven by the positioning lifting drive member 230, so that the position of the rotation axis of the positioning jaw 210 in the horizontal direction remains unchanged, and only lifts and lowers, thereby improving the stability of the positioning jaw 210 during movement.

[0036] The positioning lifting drive member 230 includes a positioning linear drive member 231, a follower 232 and a positioning transmission member 233. The follower 232 is located between the positioning jaw 210 and the clamping jaw assembly 300, and is provided with a driving groove 2321. The driving groove 2321 is inclined from one end close to the clamping jaw assembly 300 to the end away from the clamping jaw assembly 300. The driving end of the positioning linear drive member 231 is connected with a driving rod, and the driving rod is slidably matched with the driving groove 2321; one end of the positioning transmission member 233 is connected and fixed to the follower 232, and the other end of the positioning transmission member 233 is rotatably connected to the positioning jaw 210. The positioning linear drive member 231 drives the driving rod to move toward the lower end or the higher end of the driving groove 2321, and the follower 232 drives the positioning transmission member 233 to rise or fall accordingly.

[0037] The follower 232 and the lifting limiter 220 are located on the same side of the positioning clamp 210, and the follower 232 and the lifting limiter 220 are spaced apart along the second direction b. The positioning linear drive 231 includes a positioning cylinder, which is arranged in the horizontal direction and fixedly mounted on the positioning bracket 100. A driving wheel 2322 is mounted on the driving rod, and the driving wheel 2322 is slidably matched with the driving slot 2321. When the driving wheel 2322 is located at the higher end of the driving slot 2321, the follower 232 is located at the lowest position. When the driving wheel 2322 is located at the lower end of the driving slot 2321, the follower 232 is located at the highest position. Figure 3 As shown, the positioning transmission member 233 is arranged along the second direction b, one end of the positioning transmission member 233 is connected and fixed to the follower 232, and the other end is rotatably connected to the middle part of the positioning clamp 210. When the positioning cylinder drives the driving wheel 2322 to be located at the higher end of the driving groove 2321, the follower 232 drives the positioning transmission member 233 to be located at the lowest position, and the positioning clamp 210 is located at the loose position; when the positioning cylinder drives the driving wheel 2322 to move toward the lower end of the driving groove 2321 in the horizontal direction, under the interaction between the driving wheel 2322 and the inner wall of the driving groove 2321, the driving wheel 2322 drives the follower 232 to move upward, and the follower 232 drives the middle part of the positioning clamp 210 to move upward through the positioning transmission member 233, so that the positioning clamp 210 moves to the clamping position. The above-mentioned structure of the positioning lifting driving member 230 enables the positioning lifting driving member 230 to be distributed and arranged with the lifting limit member 220 along the second direction b, so as to reasonably utilize the space on the positioning bracket 100.

[0038] As an embodiment, the positioning linear drive 231 includes a cylinder or a hydraulic cylinder. When the piston rod of the positioning linear drive 231 is in the retracted position, the positioning linear drive 231 drives the drive rod to be located at the lower end of the drive groove 2321. When the piston rod of the positioning linear drive 231 is in the extended position, the positioning linear drive 231 drives the drive rod to be located at the higher end of the drive groove 2321.

[0039] In an embodiment of the present invention, the positioning linear drive member 231 includes a cylinder or a hydraulic cylinder. When the piston rod of the positioning linear drive member 231 is located at the extended position, the positioning linear drive member 231 drives the driving rod to be located at the lower end of the driving slot 2321 .

[0040] Specifically, the inclination direction of the driving groove 2321 is opposite to the inclination direction of the limiting groove 221, that is, the driving groove 2321 is inclined downward from the end close to the clamping jaw assembly 300 to the end away from the clamping jaw assembly 300. The positioning linear driving member 231 is located on the side of the follower 232 close to the clamping jaw assembly 300, and the piston rod of the positioning linear driving member 231 is located on the side of its cylinder away from the clamping jaw assembly 300, and is installed with a driving slider 234, the driving slider 234 and the follower 232 are distributed and opposite along the second direction b, and the driving slider 234 is slidably matched with the positioning bracket 100 along the first direction a through the slide rail. A driving rod is installed on the surface of the driving slider 234 opposite to the follower 232, and a driving wheel 2322 is installed on the driving rod. When the positioning linear drive 231 is in the retracted position, the driving wheel 2322 is located at the higher end of the driving slot 2321, so that the follower 232 and the positioning transmission member 233 are in the lowest position, and the positioning jaw 210 is in the released position. When the piston rod of the positioning linear drive 231 is extended, the driving wheel 2322 moves horizontally toward the lower end of the driving slot 2321, thereby driving the follower 232 to move upward, and the follower 232 drives the middle part of the positioning jaw 210 to move upward through the positioning transmission member 233, so that the positioning jaw 210 moves to the clamping position. When the piston rod of the positioning linear drive 231 is in the extended position, the force exerted on the follower 232 is more stable, thereby improving the stability of the positioning jaw 210 when clamping the material tray.

[0041] The positioning clamp assembly also includes a positioning column 240, which is perpendicular to the support surface 110, and the follower 232 is slidably matched with the positioning column 240. Two vertically arranged positioning columns 240 are provided on the positioning bracket 100, and the positioning columns 240 are arranged at intervals along the first direction a. The follower 232 is located between the two positioning columns 240 and is slidably matched with the two positioning columns 240. The follower 232 slides along the two positioning columns 240 when it is lifted or lowered, and the positioning columns 240 play a role in guiding and limiting the follower 232, thereby improving the stability of the follower 232 when it is lifted or lowered.

[0042] The clamping jaw assembly 300 includes a clamping jaw 310 and a clamping linear drive 320. The clamping jaw 310 is rotationally connected to the positioning bracket 100. The driving end of the clamping linear drive 320 is transmission-connected to the clamping jaw 310 for driving the clamping end of the clamping jaw 310 to be opposite to or staggered from the support surface 110.

[0043] Specifically, the clamping end of the clamping jaw 310 extends from one end of the positioning bracket 100 away from the positioning jaw assembly, the middle part of the clamping jaw 310 is rotatably connected to the positioning bracket 100, and the rotation axis of the clamping jaw 310 extends along the second direction b. The clamping jaw 310 can rotate between a clamping position and a loosening position. When the clamping jaw 310 is in the clamping position, the clamping end of the clamping jaw 310 is located above the supporting surface 110 to cooperate with the supporting surface 110 to clamp an edge of the material tray. When the clamping jaw 310 is in the loosening position, the clamping end of the clamping jaw 310 is located on one side of the supporting surface 110 to loosen the material tray on the supporting surface 110. The clamping linear drive member 320 includes a cylinder or a hydraulic cylinder, etc. The clamping linear drive member 320 is arranged between the clamping jaw 310 and the positioning jaw 210. The driving end of the clamping linear drive member 320 is connected to a transmission block 330. The transmission block 330 is provided with a transmission groove 331 extending in the vertical direction. A transmission wheel 332 is installed at the lower end of the clamping jaw 310. The axis of the transmission wheel 332 extends along the second direction b. The transmission wheel 332 is located in the transmission groove 331 and is movably connected to the transmission block 330. When the clamping linear drive member 320 performs telescopic movement, the clamping linear drive member 320 drives the transmission block 330 to move in the horizontal direction. The transmission block 330 drives the clamping jaw 310 to move. Figure 2 The lower end shown moves to the left or right, causing the clamping jaws 310 to rotate to the clamping position or the loosening position accordingly, thereby clamping or loosening the tray.

[0044] The positioning bracket 100 is provided with an installation cavity 120, and the positioning jaw assembly and the clamping jaw assembly 300 are both installed in the installation cavity 120. Part of the structure in the positioning jaw assembly and part of the structure in the clamping jaw assembly 300 are both located in the installation cavity 120. The positioning bracket 100 supports and protects the structure located in the installation cavity 120, and can make the structure of the tray positioning mechanism more compact.

[0045] The braiding machine provided by the embodiment of the utility model includes a conveying mechanism and the above-mentioned tray positioning mechanism, and the conveying mechanism is connected to the positioning bracket 100 in the tray positioning mechanism. During the feeding process, the tray positioning mechanism positions and clamps the material, and the conveying mechanism drives the tray positioning mechanism and the tray to move, thereby conveying the tray to a specified position.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A tray positioning mechanism, characterized in that: include: A positioning bracket (100), a positioning clamping jaw assembly and a clamping clamping jaw assembly (300), wherein the positioning bracket (100) has a supporting surface (110) for supporting a material tray; The positioning jaw assembly and the clamping jaw assembly (300) are arranged at intervals along the first direction (a), and are movably mounted on the positioning bracket (100) to limit the material tray to the support surface (110) or release it.

2. The tray positioning mechanism according to claim 1, characterized in that: The positioning jaw assembly comprises a positioning jaw (210), a lifting limiter (220) and a positioning drive member; the lifting limiter (220) is provided with a limiter groove (221); from an end close to the clamping jaw assembly (300) to an end away from the clamping jaw assembly (300), the limiter groove (221) is inclined in a direction close to the support surface (110); the positioning jaw (210) is provided with a limiter, and the limiter is slidably matched with the limiter groove (221); The driving end of the positioning driving member is rotatably connected to the positioning clamp (210), and the positioning driving member is used to drive the limiting member to move toward the higher end or the lower end of the limiting groove (221). The positioning end of the positioning clamp (210) is correspondingly opposite to or staggered with the supporting surface (110).

3. The tray positioning mechanism according to claim 2, characterized in that: The positioning drive member comprises a positioning lifting drive member (230), the driving end of the positioning lifting drive member (230) is rotatably connected to the positioning clamp (210), and the connection point is located between the positioning end of the positioning clamp (210) and the limiting member.

4. The tray positioning mechanism according to claim 3, characterized in that: The positioning lifting drive member (230) comprises a positioning linear drive member (231), a follower (232) and a positioning transmission member (233); the follower (232) is located between the positioning jaw (210) and the clamping jaw assembly (300), and is provided with a driving groove (2321); the driving groove (2321) is inclined from one end close to the clamping jaw assembly (300) to one end away from the clamping jaw; the driving end of the positioning linear drive member (231) is connected to a driving rod, and the driving rod is slidably matched with the driving groove (2321); One end of the positioning transmission member (233) is connected and fixed to the follower (232), and the other end of the positioning transmission member (233) is rotationally connected to the positioning clamp (210). The positioning linear drive member (231) drives the drive rod to move toward the lower end or the upper end of the drive groove (2321), and the follower (232) drives the positioning transmission member (233) to rise or fall accordingly.

5. The tray positioning mechanism according to claim 4, characterized in that: The positioning linear drive member (231) comprises a pneumatic cylinder or a hydraulic cylinder. When the piston rod of the positioning linear drive member (231) is located at the extended position, the drive rod is driven to be located at the lower end of the drive slot (2321).

6. The tray positioning mechanism according to claim 4, characterized in that: The positioning clamp assembly also includes a positioning column (240), the positioning column (240) is perpendicular to the support surface (110), and the follower (232) is slidably matched with the positioning column (240).

7. The tray positioning mechanism according to any one of claims 1 to 6, characterized in that: The clamping jaw assembly (300) comprises a clamping jaw (310) and a clamping linear drive member (320), wherein the clamping jaw (310) is rotationally connected to the positioning bracket (100), and the driving end of the clamping linear drive member (320) is transmission-connected to the clamping jaw (310) for driving the clamping end of the clamping jaw (310) to be opposite to or staggered from the support surface (110).

8. The tray positioning mechanism according to claim 7, characterized in that: The driving end of the clamping linear driving member (320) is connected to a transmission block (330), and the transmission block (330) is provided with a transmission groove (331) extending in a direction perpendicular to the supporting surface (110); A transmission wheel (332) is installed at the lower end of the clamping jaw (310); the transmission wheel (332) is located in the transmission groove (331) and is slidably matched with the transmission groove (331).

9. The tray positioning mechanism according to claim 1, characterized in that: The positioning bracket (100) is provided with a mounting cavity (120), and the positioning clamping jaw assembly and the clamping clamping jaw assembly (300) are both mounted in the mounting cavity (120).

10. A tape braiding machine, characterized in that: It comprises a conveying mechanism and the tray positioning mechanism according to any one of claims 1 to 9, wherein the conveying mechanism is drivingly connected to a positioning bracket (100) in the tray positioning mechanism.

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