Automatic Pin pulling clamp of forming machine

Abstract

The utility model discloses an automatic Pi n pulling clamp of a forming machine, which relates to the technical field of electrical equipment processing and comprises a support frame and an air cylinder fixedly arranged at the top of the support frame, a connecting frame is fixedly arranged at the tail end of an output shaft of the air cylinder, a two-way screw rod is rotatably arranged in the connecting frame in a penetrating manner, and sliding sleeves are sleeved at two ends of the rod wall of the two-way screw rod in a threaded manner. The outer side of the sliding sleeve is slidably sleeved with a clamping plate through a positioning adjusting mechanism, a containing block is fixedly arranged at the lower end of the interior of the supporting frame, a vertical plate is fixedly arranged on the side wall of the supporting frame, and a clamping and pulling-out mechanism is arranged between the end of the two-way screw and the vertical plate. The support frame, the cylinder, the connecting frame, the bidirectional screw rod, the sliding sleeve, the clamping plate, the placing block and the clamping and pulling-out mechanism provided by the utility model can be used for rapidly and stably pulling out a Pi n needle, so that the manual operation is reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment processing, and particularly relates to an automatic pin pulling fixture for a molding machine. Background Art

[0002] During the production and processing of circuit boards, in order to ensure the stable disassembly and assembly of pins, a pin pulling fixture is provided to automatically pull out or remove pins during the molding process.

[0003] The existing pin pulling methods on PCB molding machines are mainly manual operations. When pulling out pins, an oil pressure pliers is used to clamp the leading edge of the pin, and then the lever principle is used to pry it up and then pull it out to separate it from the bakelite board. Such manual operations not only consume manpower, but also pose risks of damaging the pins and the table surface.

[0004] In addition, the pulled-out pins may be left on the PCB molding machine table due to negligence during personnel recovery, resulting in the risk that the pins may get stuck inside the equipment, which in turn affects the operation of the equipment and may even damage the equipment in severe cases.

[0005] Therefore, we propose an automatic pin pulling fixture for a molding machine to solve the above problems. Summary of the Utility Model

[0006] In view of the problems existing in the above-mentioned existing automatic pin pulling fixtures for molding machines, the present utility model is proposed.

[0007] Therefore, the purpose of the present utility model is to provide an automatic pin pulling fixture for a molding machine, which solves the problems that the manual pin pulling cannot control the pulling force, may damage the pins or the circuit board table surface.

[0008] In order to achieve the above purpose, the present utility model provides the following technical solutions:

[0009] An automatic pin pulling fixture for a molding machine, comprising a support frame and a cylinder fixedly arranged at the top of the support frame. The end of the output shaft of the cylinder is fixedly provided with a connecting frame. A bidirectional screw is rotatably penetrated through the inside of the connecting frame. Both ends of the rod wall of the bidirectional screw are threadedly sleeved with sliding sleeves. The outside of the sliding sleeve is slidably sleeved with a clamping plate through a positioning and adjusting mechanism. A placing block is fixedly arranged at the lower end inside the support frame;

[0010] A vertical plate is fixedly arranged on the side wall of the support frame. A clamping and pulling-out mechanism is arranged between the end of the bidirectional screw and the vertical plate.

[0011] Preferably, the clamping and pulling-out mechanism includes a ratchet wheel, which is fixedly sleeved on the rod wall of the bidirectional screw. A plurality of connecting blocks are fixedly arranged on the outer wall of the vertical plate at intervals. The end of the connecting block is rotatably provided with a ratchet tooth. A first spring is fixedly arranged between the ratchet tooth and the vertical plate. A limiting plate is arranged in contact with the curved surface of the ratchet tooth, and the limiting plate is fixedly connected with the vertical plate. The ratchet wheel is arranged in cooperation with the ratchet tooth.

[0012] Preferably, the positioning and adjusting mechanism includes a positioning rod. A plurality of positioning grooves are arranged at intervals on the outer wall of the sliding sleeve. The positioning rod is slidably arranged on the side of the sliding sleeve, and the end thereof is inserted into the positioning groove. A second spring is sleeved on the rod wall of the positioning rod, and the two ends of the second spring are respectively fixedly connected with the positioning rod and the sliding sleeve.

[0013] Preferably, the sliding sleeve is in contact and cooperation with the inner wall of the connecting frame.

[0014] Furthermore, rubber anti-slip pads are fixedly arranged at the lower ends of the closer sides of the two clamping plates.

[0015] Preferably, the cross-section of the connecting frame is arranged in a U shape.

[0016] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0017] 1. In the present utility model, through the provided support frame, air cylinder, connecting frame, bidirectional screw, sliding sleeve, clamping plate, placing block and clamping and pulling-out mechanism, the Pin needle can be quickly and stably pulled out, reducing manual operation and improving operation efficiency.

[0018] 2. In the present utility model, through the provided bidirectional screw, sliding sleeve and positioning and adjusting mechanism, the distance between the two clamping plates can be adjusted according to the width specification of the Pin needle, and the Pin needle can be stably pulled out. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is the Figure 1 amplified schematic diagram of part A of the present utility model;

[0022] Figure 3 is a schematic side structural diagram of the clamping and pulling-out mechanism of the present utility model.

[0023] Description of reference numerals:

[0024] 1. Support frame; 2. Cylinder; 3. Connecting frame; 4. Bi-directional screw; 5. Sliding sleeve; 6. Clamping plate; 7. Placing block; 8. Vertical plate; 9. Ratchet wheel; 10. Connecting block; 11. Ratchet tooth; 12. First spring; 13. Limiting plate; 14. Positioning rod; 15. Positioning groove; 16. Second spring; 17. Rubber anti-slip pad. Detailed implementation manners

[0025] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below in conjunction with the accompanying drawings.

[0026] An embodiment of the present utility model discloses an automatic pin pulling fixture for a molding machine.

[0027] Embodiment 1

[0028] The present utility model provides an automatic pin pulling fixture for a molding machine as shown in Figures 1-3 Figure 1, which includes a support frame 1 and a cylinder 2 fixedly arranged at the top of the support frame 1. The end of the output shaft of the cylinder 2 is fixedly provided with a connecting frame 3. The cross-section of the connecting frame 3 is in a U-shaped arrangement. A bi-directional screw 4 is rotatably penetrated inside the connecting frame 3. Threaded sleeves 5 are respectively sleeved on both ends of the rod wall of the bi-directional screw 4. The sliding sleeves 5 are in contact and cooperation with the inner wall of the connecting frame 3. The outer sides of the sliding sleeves 5 are slidably sleeved with clamping plates 6 through a positioning and adjusting mechanism. Rubber anti-slip pads 17 are fixedly arranged at the lower ends of the closer sides of the two clamping plates 6. A placing block 7 is fixedly arranged at the lower end inside the support frame 1;

[0029] A vertical plate 8 is fixedly arranged on the side wall of the support frame 1. A clamping and pulling-out mechanism is arranged between the end of the bi-directional screw 4 and the vertical plate 8. The clamping and pulling-out mechanism includes a ratchet wheel 9 fixedly sleeved on the rod wall of the bi-directional screw 4. A plurality of connecting blocks 10 arranged at intervals are fixedly arranged on the outer wall of the vertical plate 8. A ratchet tooth 11 is rotatably arranged at the end of the connecting block 10. A first spring 12 is fixedly arranged between the ratchet tooth 11 and the vertical plate 8. A limiting plate 13 is in contact with the curved surface of the ratchet tooth 11. The limiting plate 13 is fixedly connected with the vertical plate 8. The ratchet wheel 9 and the ratchet tooth 11 are arranged in cooperation.

[0030] When pulling out the Pin, the circuit board can be placed on the placing block 7, and the air cylinder 2 is started, so that the air cylinder 2 pushes the connecting frame 3. At this time, the connecting frame 3 drives the two clamping plates 6 to move downward, so that the two clamping plates 6 are located on both sides of the Pin. During the downward movement of the connecting frame 3, the outer wall of the ratchet wheel 9 contacts the arc surfaces of the multiple ratchet teeth 11. At this time, under the push of the ratchet wheel 9, the ratchet teeth 11 can rotate around the connecting block 10 when being contacted, and squeeze the first spring 12, so that the ratchet wheel 9 cannot be pushed. When the air cylinder 2 moves upward, the ratchet wheel 9 contacts the ratchet teeth 11 again. At this time, under the support of the multiple limiting plates 13, the ratchet teeth 11 cannot be separated from the ratchet wheel 9. At this time, the ratchet wheel 9 can be pushed by the multiple ratchet teeth 11 to drive the bidirectional screw 4 to clamp. At this time, the two sliding sleeves 5 can drive the two clamping plates 6 to move upward to clamp the Pin and pull the Pin out of the circuit board.

[0031] Embodiment 2

[0032] On the basis of Embodiment 1, in order to be able to pull out Pins of multiple specifications, as Figures 1-2 shown, the positioning and adjusting mechanism includes a positioning rod 14. A plurality of positioning grooves 15 are arranged at intervals on the outer wall of the sliding sleeve 5. The positioning rod 14 is slidably arranged on the side of the sliding sleeve 5, and the end is inserted into the positioning groove 15. A second spring 16 is sleeved on the rod wall of the positioning rod 14. The two ends of the second spring 16 are respectively fixedly connected to the positioning rod 14 and the sliding sleeve 5.

[0033] Before pulling out the Pin, first determine the width specification of the Pin to be pulled out, and then pull the two positioning rods 14 in turn, so that the positioning rods 14 are pulled out of the positioning grooves 15 and the second spring 16 is stretched. At this time, the clamping plate 6 can move horizontally to cooperate with the Pin. Then release the positioning rod 14. Under the elastic recovery of the second spring 16, the positioning rod 14 is inserted into the positioning groove 15 again to complete the position fixing of the clamping plate 6. At this time, the clamping plate 6 can stably clamp and pull out the Pin after moving downward and upward, improving the versatility of the device.

[0034] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. An automatic pin extraction fixture for a molding machine, comprising a support frame (1) and a cylinder (2) fixedly arranged on the top of the support frame (1), characterized in that: A connecting frame (3) is fixedly provided at the end of the output shaft of the cylinder (2), a bidirectional screw (4) is rotatably inserted inside the connecting frame (3), both ends of the rod wall of the bidirectional screw (4) are threadedly sleeved with a sliding sleeve (5), the outer side of the sliding sleeve (5) is provided with a clamping plate (6) through a positioning adjustment mechanism, and a placement block (7) is fixedly provided at the lower end of the inner part of the support frame (1); A vertical plate (8) is fixedly provided on the side wall of the support frame (1), and a clamping and pulling mechanism is provided between the end of the bidirectional screw rod (4) and the vertical plate (8).

2. The automatic pin extraction fixture for a molding machine according to claim 1, characterized in that: The clamping and pulling mechanism comprises a ratchet (9), the ratchet (9) is fixedly sleeved with the rod wall of the bidirectional screw (4), the outer wall of the vertical plate (8) is fixedly provided with a plurality of spaced connection blocks (10), the end of the connection block (10) is rotatably provided with a ratchet (11), a first spring (12) is fixedly provided between the ratchet (11) and the vertical plate (8), a limit plate (13) is provided in contact with the curved surface of the ratchet (11), the limit plate (13) is fixedly connected to the vertical plate (8), and the ratchet (9) and the ratchet (11) are arranged in coordination.

3. The automatic pin extraction fixture for a molding machine according to claim 1, characterized in that: The positioning adjustment mechanism comprises a positioning rod (14), the outer wall of the sliding sleeve (5) is provided with a plurality of positioning grooves (15) arranged at intervals, the positioning rod (14) is slidably arranged on the side of the sliding sleeve (5), and the end portion is inserted into the positioning groove (15), the rod wall of the positioning rod (14) is provided with a second spring (16), and the two ends of the second spring (16) are respectively fixedly connected to the positioning rod (14) and the sliding sleeve (5).

4. The automatic pin extraction fixture for a molding machine according to claim 1, characterized in that: The sliding sleeve (5) is in contact with and fits with the inner wall of the connecting frame (3).

5. The automatic pin extraction fixture for a molding machine according to claim 1, characterized in that: A rubber anti-skid pad (17) is fixedly provided at the lower end of the adjacent side of the two clamping plates (6).

6. The automatic pin extraction fixture for a molding machine according to claim 1, characterized in that: The cross section of the connecting frame (3) is U-shaped.

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