Positioning tool and rear cover plate machining equipment

Abstract

The utility model relates to the technical field of rear cover plate processing equipment, in particular to a positioning tool and rear cover plate processing equipment, which comprises a clamping piece, a push block is fixed at the top end of the clamping piece, two groups of connecting rods are fixed at the other end of the clamping piece, the connecting rods are movably inserted on the surface of a support, and spring plates are fixed at the other ends of the connecting rods. The surface of the connecting rod is sleeved with a clamping spring, and a limiting assembly is arranged between the support and the clamping piece. The die has the beneficial effects that the push block is arranged at the top end of the clamping piece, when the upper pressing plate and the male die move downwards, the upper pressing plate firstly makes contact with the inclined face of the push block, the upper pressing plate continues to move downwards to push the push block away from the position above a workpiece, the push block moves to drive the clamping piece to be away from the position above the workpiece, and at the moment, the bottom end of the male die makes contact with the workpiece; the workpiece is pressed into the groove in the top end of the female die along with continuous downward movement of the male die, so that when the edge of the workpiece is curled upwards, the clamping piece leaves the upper portion of the workpiece, and the curled workpiece cannot damage the clamping piece.

Description

Technical Field

[0001] The utility model relates to the field of rear cover plate processing equipment, in particular to a positioning tool and rear cover plate processing equipment. Background Art

[0002] The back cover is one of the important parts of a mobile phone. The back cover and the middle frame of many mobile phones are designed as an integrated whole. The back cover of this design is generally processed by stamping. The workpiece to be processed is placed on the top of the die. The side length of the groove on the surface of the die is smaller than the side length of the workpiece. The punch of the punching machine squeezes the workpiece into the die. The edge of the workpiece is curled upward under the extrusion of the punch and the die to form a back cover of the mobile phone that is integrated with the middle frame.

[0003] In the prior art, when using this processing technology to make the back cover of a mobile phone, a traditional clamp is generally used for positioning. The sheet-shaped clamp presses the workpiece between the clamp and the die, which is easy to operate.

[0004] However, when the workpiece is squeezed upward by the punch, the clamp will be lifted up, which may easily cause the clamp to bend and deform. Utility Model Content

[0005] The purpose of the utility model is to provide a positioning tool and a rear cover plate processing device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning tool, comprising: a clip, a push block is fixed to the top of the clip, two sets of connecting rods are fixed to the other end of the clip, the connecting rods are movably inserted on the surface of the bracket, a spring plate is fixed to the other end of the connecting rod, a clamping spring is sleeved on the surface of the connecting rod, and a limiting component is arranged between the bracket and the clip.

[0007] Preferably, the clamp is an "L"-shaped plate structure, the vertical plate of the clamp abuts against the side of the workpiece, and the horizontal plate of the clamp abuts against the top of the workpiece. The clamps are provided in four groups, and the four groups of clamps are distributed in a circle about the workpiece.

[0008] Preferably, one end of the clamping spring is fixed on the surface of the spring plate, and the other end of the clamping spring is fixed on the surface of the bracket.

[0009] Preferably, the push block is a wedge-shaped block structure, and a slope is provided on the top of the push block.

[0010] Preferably, the limit assembly includes: a limit plate, which is fixed on the surface of the bracket, and a limit block installation groove is opened at the bottom end of the limit plate, one end of the limit block is movably inserted in the limit block installation groove, and the other end of the limit block is movably inserted in the limit groove, and the limit groove is opened at the top of the clip.

[0011] Preferably, a limit spring and a pull rod are fixed to the top of the limit block, two groups of limit springs are provided, and the two groups of limit springs are symmetrically distributed about the pull rod. The top of the limit spring is fixed on the inner wall of the limit block installation groove, and the pull rod is movably inserted on the surface of the limit plate.

[0012] Preferably, the limit block is a wedge-shaped block structure, and a slope is provided at the bottom end of the limit block.

[0013] Preferably, a die is fixed to the bottom end of the bracket, a base is fixed to the bottom end of the die, a guide rail is fixed to the top end of the base, a top plate is movably connected to the guide rail, an upper pressure plate is fixed to the bottom end of the top plate, a punch is fixed to the bottom end of the upper pressure plate, the base is set on the workbench of the punch press, and the top plate is set on the slider of the punch press.

[0014] Preferably, the side length of the punch is equal to the side length of the groove set at the top of the die, the side length of the upper pressure plate is equal to the side length of the workpiece, and the thickness of the punch is equal to the thickness of the cross plate of the clamp plus the thickness of the thinnest part of the push block.

[0015] A rear cover plate processing device comprises the positioning tool described above.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The positioning tooling and rear cover plate processing equipment proposed by the utility model are equipped with a push block at the top end of the clamping piece. When the upper pressure plate and the punch move downward, the upper pressure plate first contacts the inclined surface of the push block. The upper pressure plate continues to move downward to push the push block away from the top of the workpiece. The movement of the push block drives the clamping piece away from the top of the workpiece. At this time, the bottom end of the punch will contact the workpiece. As the punch continues to move downward, the workpiece is pressed into the groove at the top end of the die. When the edge of the workpiece curls upward, the clamping piece has left the top of the workpiece, so the curling of the workpiece will not cause damage to the clamping piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0022] In the figure: top plate 1, base 2, upper pressure plate 3, punch 4, die 5, bracket 6, connecting rod

[0023] 7. Clip 8. Spring plate 9. Clamping spring 10. Limit plate 11. Limit block installation slot

[0024] 12, limit block 13, limit spring 14, pull rod 15, limit slot 16, push block 17. DETAILED DESCRIPTION

[0025] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit 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] Embodiment 1

[0027] See also Figure 1-Figure 4 The utility model provides a technical solution: a positioning tool, comprising: a clamping piece 8, a push block 17 is fixed on the top of the clamping piece 8, two groups of connecting rods 7 are fixed on the other end of the clamping piece 8, the connecting rod 7 is movably plugged on the surface of the bracket 6, a spring plate 9 is fixed on the other end of the connecting rod 7, a clamping spring 10 is sleeved on the surface of the connecting rod 7, a limited position component is arranged between the bracket 6 and the clamping piece 8, the clamping piece 8 is an "L"-shaped plate structure, the vertical plate of the clamping piece 8 is against the side of the workpiece, the horizontal plate of the clamping piece 8 is against the top of the workpiece, the clamping piece 8 is provided with four groups, and the four groups of clamping pieces 8 are distributed in a circle about the workpiece, one end of the clamping spring 10 is fixed on the surface of the spring plate 9, and the clamping spring 1 0 is fixed on the surface of the bracket 6, the push block 17 is a wedge-shaped block structure, the top of the push block 17 is provided with an inclined surface, the bottom end of the bracket 6 is fixed with a die 5, the bottom end of the die 5 is fixed with a base 2, the top of the base 2 is fixed with a guide rail, the guide rail is movably connected with a top plate 1, the bottom end of the top plate 1 is fixed with an upper pressure plate 3, the bottom end of the upper pressure plate 3 is fixed with a punch 4, the base 2 is arranged on the workbench of the punch press, the top plate 1 is arranged on the slider of the punch press, the side length of the punch 4 is equal to the side length of the groove arranged at the top of the die 5, the side length of the upper pressure plate 3 is equal to the side length of the workpiece, and the thickness of the punch 4 is equal to the thickness of the cross plate of the clamp 8 plus the thickness of the thinnest part of the push block 17.

[0028] In actual use, the clamping spring 10 is in a stretched state. The clamping spring 10 pulls the spring plate 9 toward the bracket 6 under its own elastic action. The movement of the spring plate 9 pushes the clamping piece 8 toward the workpiece through the connecting rod 7, and the workpiece is clamped between the four groups of clamping pieces 8 for positioning. When the workpiece is punched, the slider of the punch press drives the top plate 1 to move downward along the guide rail at the top of the base 2. During the movement, the bottom end of the upper pressing plate 3 first contacts the inclined surface of the top of the push block 17. As the upper pressing plate 3 continues to descend, the upper pressing plate 3 gradually pushes the push block 17 away from the punch 4. Since the side length of the upper pressing plate 3 is the same as the side length of the workpiece The side lengths are equal, so after being pushed by the upper pressure plate 3, the push block 17 is finally pushed away from the top of the workpiece, and the movement of the push block 17 also drives the cross plate of the clamp 8 to leave from the top of the workpiece. At the same time, the thickness of the punch 4 is equal to the thickness of the cross plate of the clamp 8 plus the thickness of the thinnest part of the push block 17. Therefore, when the upper pressure plate 3 pushes the push block 17 and the clamp 8 away from the top of the workpiece, the bottom end of the punch 4 just contacts the workpiece, and the upper pressure plate 3 and the punch 4 continue to move downward, pressing the workpiece into the groove set at the top of the die 5, so that the edges of the workpiece are curled upward. At this time, because the clamp 8 has been pushed away from the top of the workpiece, the upward winding of the workpiece will not damage the clamp 8.

[0029] Embodiment 2

[0030] On the basis of Example 1, in order to facilitate the replacement of workpieces, a limiting assembly is arranged between the bracket 6 and the clamp 8, and the limiting assembly includes: a limiting plate 11, the limiting plate 11 is fixed on the surface of the bracket 6, and a limiting block mounting groove 12 is provided at the bottom end of the limiting plate 11, one end of the limiting block 13 is movably inserted in the limiting block mounting groove 12, and the other end of the limiting block 13 is movably inserted in the limiting groove 16, and the limiting groove 16 is provided at the top of the clamp 8. A limiting spring 14 and a pull rod 15 are fixed to the top of the limiting block 13. Two groups of limiting springs 14 are provided, and the two groups of limiting springs 14 are symmetrically distributed about the pull rod 15. The top end of the limiting spring 14 is fixed on the inner wall of the limit block mounting groove 12, and the pull rod 15 is movably inserted on the surface of the limiting plate 11. The limiting block 13 is a wedge-shaped block structure, and the bottom end of the limiting block 13 is provided with an inclined surface.

[0031] When the upper pressure plate 3 pushes the push block 17 and the clamping piece 8 away from the top of the workpiece, the clamping piece 8 moves toward the direction close to the limit plate 11. As the clamping piece 8 moves, the clamping piece 8 contacts the inclined surface of the limit block 13, so that the limit block 13 is completely pushed upward into the limit block mounting groove 12. The movement of the limit block 13 causes the limit spring 14 to be compressed by the limit block 13 and the inner wall of the limit block mounting groove 12. When the clamping piece 8 continues to move until the limit groove 16 is aligned with the limit block mounting groove 12, the limit spring 14 pushes the bottom end of the limit block 13 into the limit groove 16 under its own elastic action. When the workpiece is processed, the upper pressure plate 3 and the punch 4 move upward, and the clamping piece 13 is pressed against the workpiece. The plate 8 cannot be pulled back to its original position by the clamping spring 10 under the limit of the limit block 13. At this time, the processed workpiece can be taken out, and the new workpiece to be processed can be placed on the top of the die 5, and then the groups of pull rods 15 are pulled upward. The pull rods 15 drive the limit block 13 to move upward, so that the bottom end of the limit block 13 withdraws from the limit groove 16, and the limit of the clip 8 is released. The clamping spring 10 in the stretched state pulls the spring plate 9 to move in the opposite direction close to the bracket 6. The spring plate 9 moves toward the workpiece through the connecting rod 7 to the clip 8, so that the new workpiece to be processed is clamped in the middle of the four groups of clips 8, and the workpiece replacement can be completed.

[0032] In actual use, the clamping spring 10 is in a stretched state. The clamping spring 10 pulls the spring plate 9 toward the bracket 6 under its own elastic action. The movement of the spring plate 9 pushes the clamping piece 8 toward the workpiece through the connecting rod 7, and the workpiece is clamped between the four groups of clamping pieces 8 for positioning. When the workpiece is punched, the slider of the punch press drives the top plate 1 to move downward along the guide rail at the top of the base 2. During the movement, the bottom end of the upper pressing plate 3 first contacts the inclined surface of the top of the push block 17. As the upper pressing plate 3 continues to descend, the upper pressing plate 3 gradually pushes the push block 17 away from the punch 4. Since the side length of the upper pressing plate 3 is the same as the side length of the workpiece The side lengths are equal, so after being pushed by the upper pressing plate 3, the push block 17 is finally pushed away from the top of the workpiece, and the movement of the push block 17 also drives the cross plate of the clamping piece 8 to leave from the top of the workpiece. At the same time, the thickness of the punch 4 is equal to the thickness of the cross plate of the clamping piece 8 plus the thickness of the thinnest part of the push block 17. Therefore, when the upper pressing plate 3 pushes the push block 17 and the clamping piece 8 away from the top of the workpiece, the bottom end of the punch 4 just contacts the workpiece, and the upper pressing plate 3 and the punch 4 continue to move downward, pressing the workpiece into the groove set at the top of the die 5, so that the edges of the workpiece are curled upward. At this time, because the clamping piece 8 has been pushed away from the top of the workpiece, the upward winding of the workpiece will not damage the clamping piece 8. When the upper pressure plate 3 pushes the push block 17 and the clamping piece 8 away from the top of the workpiece, the clamping piece 8 moves toward the direction close to the limit plate 11. As the clamping piece 8 moves, the clamping piece 8 contacts the inclined surface of the limit block 13, so that the limit block 13 is completely pushed upward into the limit block mounting groove 12. The movement of the limit block 13 causes the limit spring 14 to be compressed by the limit block 13 and the inner wall of the limit block mounting groove 12. When the clamping piece 8 continues to move until the limit groove 16 is aligned with the limit block mounting groove 12, the limit spring 14 pushes the bottom end of the limit block 13 into the limit groove 16 under its own elastic action. When the workpiece is processed, the upper pressure plate 3 and the punch 4 move upward, and the clamping piece 13 is pressed against the workpiece. The plate 8 cannot be pulled back to its original position by the clamping spring 10 under the limit of the limit block 13. At this time, the processed workpiece can be taken out, and the new workpiece to be processed can be placed on the top of the die 5, and then the groups of pull rods 15 are pulled upward. The pull rods 15 drive the limit block 13 to move upward, so that the bottom end of the limit block 13 withdraws from the limit groove 16, and the limit of the clip 8 is released. The clamping spring 10 in the stretched state pulls the spring plate 9 to move in the opposite direction close to the bracket 6. The spring plate 9 moves toward the workpiece through the connecting rod 7 to the clip 8, so that the new workpiece to be processed is clamped in the middle of the four groups of clips 8, and the workpiece replacement can be completed.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning tool, comprising: The clamping piece (8) is characterized in that a push block (17) is fixed to the top end of the clamping piece (8), two sets of connecting rods (7) are fixed to the other end of the clamping piece (8), the connecting rods (7) are movably plugged on the surface of the bracket (6), a spring plate (9) is fixed to the other end of the connecting rod (7), a clamping spring (10) is sleeved on the surface of the connecting rod (7), and a limiting component is arranged between the bracket (6) and the clamping piece (8).

2. A positioning tool according to claim 1, characterized in that: The clamping piece (8) is in an "L"-shaped plate structure, the vertical plate of the clamping piece (8) is against the side of the workpiece, and the horizontal plate of the clamping piece (8) is against the top of the workpiece. The clamping piece (8) is provided in four groups, and the four groups of clamping pieces (8) are distributed in a circle about the workpiece.

3. A positioning tool according to claim 1, characterized in that: One end of the clamping spring (10) is fixed on the surface of the spring plate (9), and the other end of the clamping spring (10) is fixed on the surface of the bracket (6).

4. A positioning tool according to claim 1, characterized in that: The push block (17) is in a wedge-shaped block structure, and a slope is arranged on the top of the push block (17).

5. A positioning tool according to claim 1, characterized in that: The limiting assembly comprises: a limiting plate (11), the limiting plate (11) is fixed on the surface of the bracket (6), a limiting block installation groove (12) is provided at the bottom end of the limiting plate (11), one end of the limiting block (13) is movably inserted in the limiting block installation groove (12), the other end of the limiting block (13) is movably inserted in the limiting groove (16), and the limiting groove (16) is provided at the top end of the clamp (8).

6. A positioning tool according to claim 5, characterized in that: The top end of the limit block (13) is fixed with a limit spring (14) and a pull rod (15). Two groups of limit springs (14) are provided. The two groups of limit springs (14) are symmetrically distributed about the pull rod (15). The top end of the limit spring (14) is fixed on the inner wall of the limit block installation groove (12), and the pull rod (15) is movably plugged on the surface of the limit plate (11).

7. A positioning tool according to claim 5, characterized in that: The limiting block (13) is in a wedge-shaped block structure, and a slope is arranged at the bottom end of the limiting block (13).

8. A positioning tool according to claim 1, characterized in that: A die (5) is fixed to the bottom end of the bracket (6), a base (2) is fixed to the bottom end of the die (5), a guide rail is fixed to the top end of the base (2), a top plate (1) is movably connected to the guide rail, an upper pressing plate (3) is fixed to the bottom end of the top plate (1), a punch (4) is fixed to the bottom end of the upper pressing plate (3), the base (2) is arranged on a workbench of a punch press, and the top plate (1) is arranged on a slider of the punch press.

9. A positioning tool according to claim 8, characterized in that: The side length of the punch (4) is equal to the side length of the groove arranged at the top of the die (5), the side length of the upper pressing plate (3) is equal to the side length of the workpiece, and the thickness of the punch (4) is equal to the thickness of the cross plate of the clamp (8) plus the thickness of the thinnest part of the push block (17).

10. A rear cover plate processing equipment, characterized in that: The invention comprises the positioning tool as described in any one of claims 1 to 9.

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