PCB four-corner terminal pin twisting machine

Abstract

The utility model discloses a PCB (printed circuit board) four-corner terminal pin twisting machine which comprises a workbench, a stand column is welded and fixed on the upper surface of the workbench, the upper end of the stand column is fixed with a top plate, and a processing seat is further fixed on the upper surface of the workbench; an air cylinder is fixed to the upper surface of the top plate through bolts, the lower end of the air cylinder penetrates through the top plate to be fixed to a connecting plate, and four sets of torsion bars are arranged on the lower surface of the connecting plate; the lower end of the torsion bar is provided with a wedging groove, the wedging groove is wedged with four corners of the terminal, the outer side surface of the torsion bar is fixedly provided with a gear, and the gear is engaged with the rack. According to the four-corner terminal pin twisting machine for the PCB, the four corners of the terminal are twisted at the same time, the working efficiency is greatly improved, the position of the terminal does not need to be manually adjusted in the later period, time and labor are saved, the wedging groove can be restored to the initial state, a servo motor does not need to be manually controlled to be started, and labor is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of foot twisting machines, in particular to a foot twisting machine for four-corner terminals of a PCB circuit board. Background Art

[0002] Four-corner terminals are usually installed on PCB circuit boards. When the four-corner terminals are assembled with the PCB circuit boards, they need to be twisted so that the four corners of the terminals are engaged and fixed with the circuit boards. For example, in the patent number "CN204430079U" and the patent name "twisting machine", the second cylinder pushes the rack, and the rack meshes with the gear, so that the coaxially fixed lower mold rotates together with the gear. The rotation of the lower mold causes the terminal inserted on the lower mold to be twisted. The adjustment device is used to limit the movable distance of the rack, because the bolt is threadedly connected to the adjustment block, and the adjustment block is fixed on the middle plate. By rotating the bolt, one end of the bolt conflicts with the moving rack to control the rotation amplitude of the gear, so as to achieve the control amplitude of the terminal twisting. The gear and the upper mold are both connected, so that two products can be processed at the same time to improve work efficiency. However, the above structure still has the following problems in actual use:

[0003] The above structure twists the terminals inserted on the lower mold by rotating the lower mold, thereby achieving the effect of twisting the feet. However, the PCB circuit board terminals are usually provided with four corners. The above twisting machine needs to twist the four corners of the terminals in turn, which greatly slows down the work efficiency, and requires manual adjustment of the terminal position to be able to twist the subsequent terminal corners.

[0004] Therefore, we proposed a PCB circuit board four-corner terminal twisting machine that can solve the above problems well. Utility Model Content

[0005] The purpose of the utility model is to provide a PCB circuit board four-corner terminal twisting machine to solve the problem raised by the above background technology that the PCB circuit board terminals on the current market are usually provided with four corners, and the twisting machine needs to twist the four corners of the terminals in turn, which greatly slows down the work efficiency, and requires manual adjustment of the terminal position in order to twist the subsequent terminal corners.

[0006] To achieve the above object, the utility model provides the following technical solution: a PCB circuit board four-corner terminal twisting machine, comprising a workbench, a column is welded and fixed on the upper surface of the workbench, and the upper end of the column is fixed to the top plate, and a processing seat is also fixed on the upper surface of the workbench;

[0007] The invention also includes: a cylinder is bolted to the upper surface of the top plate, and the lower end of the cylinder penetrates the top plate and is fixed to the connecting plate, and a torsion bar is arranged on the lower surface of the connecting plate, and four groups of torsion bars are arranged;

[0008] The lower end of the torsion bar is provided with a fitting groove, and the fitting groove is fitted with the four corners of the terminal, and a gear is fixed on the outer side surface of the torsion bar, and the gear is meshed with the rack.

[0009] Preferably, the upper end of the rack is fixed to the connecting slider, and the middle thread of the connecting slider is connected to a reciprocating screw rod.

[0010] Preferably, the front end of the reciprocating screw is connected to the connecting plate bearing, and the rear end of the reciprocating screw is fixed to the output end of the servo motor, and the servo motor is bolted to the rear side of the connecting plate.

[0011] Preferably, the outer side surfaces of the upper ends of the torsion bars are sleeved with torsion springs, and the torsion force of the torsion springs is smaller than the return torsion force of the four corners of the terminal.

[0012] Preferably, a sleeve is fixed on the upper surface of the processing seat, and a sleeve rod is arranged inside the sleeve, and the sleeve rod is slidably connected with the sleeve through a reset spring, and both ends of the reset spring are respectively fixed to the sleeve rod and the sleeve.

[0013] Preferably, a touch block is fixed to the lower end of the sleeve rod, and the lower surface of the touch block is in contact with the pressure sensor, and the pressure sensor is fixed inside the sleeve.

[0014] Preferably, the pressure sensor is connected to the controller via a transmission line, and the controller is fixed inside the sleeve, and the controller is electrically connected to the servo motor.

[0015] Compared with the prior art, the beneficial effects of the utility model are: the PCB circuit board four-corner terminal twisting machine not only realizes the twisting operation of the four corners of the terminal at the same time, greatly improving the work efficiency, but also does not need to manually adjust the position of the terminal later, saving time and effort, and can restore the fitting groove to the initial state, and does not need to manually control the servo motor to start, saving labor, and its specific contents are as follows:

[0016] (1) There are four groups of torsion bars, which rotate simultaneously to achieve the simultaneous twisting of the four corners of the terminal, greatly improving the work efficiency and eliminating the need for manual adjustment of the terminal position, saving time and effort;

[0017] (2) The servo motor drives the reciprocating screw to rotate, so that the reciprocating screw drives the connecting slider to move back and forth, so that the rack drives the meshing gear to rotate, so that the gear drives the torsion bar to rotate together, so that the torsion bar twists the terminal;

[0018] (3) Furthermore, when the cylinder drives the connecting plate to reset upward, the four corners of the terminal are separated from the fitting groove. At this time, the elastic force of the torsion spring drives the torsion bar to reset, so that the torsion bar drives the fitting groove to return to the initial state;

[0019] (4) Furthermore, by providing a torsion spring with a relatively small torsion force, when the fitting groove and the four corners of the terminal fit together, the torsion force of the torsion spring cannot drive the torsion bar to rotate, thereby preventing the torsion bar from driving the four corners of the terminal that has completed the twisting foot to rotate;

[0020] (5) The sleeve rod is squeezed by the connecting plate, so that the sleeve rod is forced to drive the touch block to squeeze the pressure sensor, so that the pressure sensor is triggered and then transmits the signal to the controller, and the servo motor is controlled to start through the controller, thereby eliminating the need for manual control of the servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0023] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0024] Figure 4 This is a schematic diagram of the top-sectional structure of the utility model;

[0025] Figure 5 For this utility model Figure 4 The enlarged structural diagram at C in the middle;

[0026] Figure 6 For this utility model Figure 2 The enlarged structural diagram at B in the middle;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the torsion bar of the utility model.

[0028] In the figure: 1. workbench; 2. column; 3. top plate; 4. processing seat; 5. cylinder; 6. connecting plate; 7. servo motor; 8. reciprocating screw; 9. connecting slider; 10. rack; 11. gear; 12. torsion bar; 13. fitting groove; 14. torsion spring; 15. sleeve; 16. sleeve rod; 17. reset spring; 18. touch block; 19. pressure sensor; 20. controller. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0030] See also Figure 1-Figure 7 , the utility model provides the following technical solutions:

[0031] Embodiment 1: In order to solve the problem in the prior art that PCB circuit board terminals are usually provided with four corners, and the twisting machine needs to twist the four corners of the terminal in sequence, which greatly slows down the work efficiency, and the terminal position needs to be manually adjusted before the subsequent terminal corners can be twisted, the following scheme is disclosed, including a workbench 1, a column 2 is welded and fixed on the upper surface of the workbench 1, and the upper end of the column 2 is fixed to the top plate 3, and a processing seat 4 is also fixed on the upper surface of the workbench 1; and : The upper surface of the top plate 3 is bolted with a cylinder 5, and the lower end of the cylinder 5 penetrates the top plate 3 and is fixed to the connecting plate 6, and a torsion bar 12 is provided on the lower surface of the connecting plate 6, and four groups of torsion bars 12 are provided; the lower end of the torsion bar 12 is provided with a fitting groove 13, and the fitting groove 13 fits with the four corners of the terminal, and a gear 11 is fixed to the outer side of the torsion bar 12, and the gear 11 is meshed with the rack 10, the upper end of the rack 10 is fixed to the connecting slider 9, and the middle thread of the connecting slider 9 is connected to the reciprocating screw 8;

[0032] By starting the cylinder 5, the cylinder 5 drives the connecting plate 6 to move downward, so that the connecting plate 6 drives the torsion bar 12 downward together, and the torsion bar 12 drives the fitting groove 13 to fit with the four corners of the terminal on the processing seat 4, and then the servo motor 7 drives the reciprocating screw rod 8 to rotate, so that the reciprocating screw rod 8 drives the connecting slider 9 to move forward, so that the connecting slider 9 drives the rack 10 to move forward together, and the rack 10 drives the meshing gear 11 to rotate, and the gear 11 rotates, so that the torsion bar 12 rotates together, so that the torsion bar 12 twists the terminal, and the torsion bar 12 is provided with four groups, so as to realize the twisting operation of the four corners of the terminal at the same time, which greatly improves the work efficiency, and does not need to manually adjust the position of the terminal later, saving time and effort;

[0033] Embodiment 2: Different from Embodiment 1, this embodiment can make the torsion bar 12 drive the fitting groove 13 to return to the initial state. Figure 2-Figure 3, the front end of the reciprocating screw rod 8 is connected to the bearing of the connecting plate 6, and the rear end of the reciprocating screw rod 8 is fixed to the output end of the servo motor 7, and the servo motor 7 is bolted to the rear side of the connecting plate 6, and the outer side surface of the upper end of the torsion bar 12 is sleeved with a torsion spring 14, and the torsion force of the torsion spring 14 is less than the return torsion force of the four corners of the terminal;

[0034] When the cylinder 5 drives the connecting plate 6 to reset upward, the connecting plate 6 will drive the torsion bar 12 upward together, thereby separating the four corners of the terminal from the fitting groove 13, and at this time the rack 10 has slid to the point where it is not in contact with the gear 11, and then the torsion bar 12 is driven to reset by the elastic force of the torsion spring 14, so that the torsion bar 12 drives the fitting groove 13 to return to its initial state, and by setting a torsion spring 14 with a smaller torsion force, so that when the fitting groove 13 and the four corners of the terminal are fitted, the torsion of the torsion spring 14 cannot drive the torsion bar 12 to rotate, so that the fitting groove 13 can fit with the four corners of the terminal again, and when the foot is twisted again, the servo motor 7 will continue to drive the reciprocating screw 8 to rotate, so that the reciprocating screw 8 drives the connecting slider 9 to reset, and then the connecting slider 9 drives the rack 10 to slide to the rear side, thereby achieving the effect of torque again, and through the reciprocating motion formed between the connecting slider 9 and the reciprocating screw 8, the efficiency of the twisting foot is greatly improved;

[0035] Embodiment 3: Different from Embodiment 2, this embodiment does not require manual control of the servo motor 7 to start. Figure 2 and Figure 6 A sleeve 15 is fixed to the upper surface of the processing seat 4, and a sleeve rod 16 is arranged inside the sleeve 15, and the sleeve rod 16 is slidably connected with the sleeve 15 through a reset spring 17, and the two ends of the reset spring 17 are respectively fixed to the sleeve rod 16 and the sleeve 15, and a touch block 18 is fixed to the lower end of the sleeve rod 16, and the lower surface of the touch block 18 is in contact with a pressure sensor 19, and the pressure sensor 19 is fixed inside the sleeve 15, and the pressure sensor 19 is connected to the controller 20 through a transmission line, and the controller 20 is fixed inside the sleeve 15, and the controller 20 is electrically connected to the servo motor 7;

[0036] When the connecting plate 6 drives the torsion bar 12 downward so that the fitting groove 13 fits with the four corners of the terminal, the connecting plate 6 will also squeeze the sleeve rod 16, so that the sleeve rod 16 is forced to slide into the sleeve 15, so that the sleeve rod 16 drives the touch block 18 to squeeze the pressure sensor 19, and the pressure sensor 19 triggers the signal to be transmitted to the controller 20, and the electrical connection between the controller 20 and the servo motor 7 is formed, and the servo motor 7 is controlled to start through the setting of the controller 20, so that there is no need for manual control to start the servo motor 7, and it can be more accurate and fast.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A PCB circuit board four-corner terminal twisting machine, comprising a workbench (1), a column (2) is welded and fixed on the upper surface of the workbench (1), and the upper end of the column (2) is fixed to a top plate (3), and a processing seat (4) is also fixed on the upper surface of the workbench (1); It is characterized in that Also includes: The upper surface of the top plate (3) is bolted with a cylinder (5), and the lower end of the cylinder (5) penetrates the top plate (3) and is fixed to the connecting plate (6), and the lower surface of the connecting plate (6) is provided with a torsion bar (12), and four groups of torsion bars (12) are provided; The lower end of the torsion bar (12) is provided with a fitting groove (13), and the fitting groove (13) fits with the four corners of the terminal. A gear (11) is fixed to the outer side surface of the torsion bar (12), and the gear (11) meshes with the rack (10).

2. A PCB circuit board four-corner terminal twisting machine according to claim 1, characterized in that: The upper end of the rack (10) is fixed to the connecting slider (9), and the middle thread of the connecting slider (9) is connected to a reciprocating screw rod (8).

3. A PCB circuit board four-corner terminal twisting machine according to claim 2, characterized in that: The front end of the reciprocating screw rod (8) is connected to the bearing of the connecting plate (6), and the rear end of the reciprocating screw rod (8) is fixed to the output end of the servo motor (7), and the servo motor (7) is bolted to the rear side of the connecting plate (6).

4. A PCB circuit board four-corner terminal twisting machine according to claim 1, characterized in that: The outer side surfaces of the upper ends of the torsion bars (12) are sleeved with torsion springs (14), and the torsion force of the torsion springs (14) is smaller than the return torsion force of the four corners of the terminal.

5. A PCB circuit board four-corner terminal twisting machine according to claim 1, characterized in that: A sleeve (15) is fixed on the upper surface of the processing seat (4), and a sleeve rod (16) is arranged inside the sleeve (15). The sleeve rod (16) is slidably connected to the sleeve (15) via a return spring (17), and two ends of the return spring (17) are respectively fixed to the sleeve rod (16) and the sleeve (15).

6. A PCB circuit board four-corner terminal twisting machine according to claim 5, characterized in that: A touch block (18) is fixed at the lower end of the sleeve rod (16), and the lower surface of the touch block (18) is in contact with a pressure sensor (19), and the pressure sensor (19) is fixed inside the sleeve (15).

7. A PCB circuit board four-corner terminal twisting machine according to claim 6, characterized in that: The pressure sensor (19) is connected to the controller (20) via a transmission line, and the controller (20) is fixed inside the sleeve (15), and the controller (20) is electrically connected to the servo motor (7).

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