Automatic riveting equipment for printed circuit board

Abstract

The application discloses a kind of printed circuit board automatic riveting equipment, it is related to riveting equipment field, including box, rivet frame, transfer assembly, pressure connection unit and drive assembly;The rivet frame is used to place printed circuit board, the transfer assembly is used to support rivet frame, the transfer assembly is movably installed on the box, and the drive assembly is used to drive the transfer assembly to move;The pressure connection unit is used for the automatic pressure connection of printed circuit board, and the pressure connection unit is fixedly installed at the center of the box top plate, and the pressure connection unit includes upper punch assembly and lower punch and positioning assembly, effectively solve the current connector and the connection of printed circuit board adopts the mode of manual punch riveting, leading to poor quality consistency, easy to damage workpiece, the technical problem of low production efficiency.

Description

Technical Field

[0001] This invention relates to the field of riveting equipment, specifically to an automatic riveting device for printed circuit boards. Background Technology

[0002] In modern electronic equipment, especially in electronic control units for high-reliability applications such as rail transportation and aerospace, printed circuit boards (PCBs) play a crucial role, serving as the core for signal equipment information processing, intelligent control, and safety assurance. They possess key characteristics such as compact structure, significantly reducing the size of electronic equipment, adaptability to different installation spaces, precise wiring layout, stable signal transmission, and reduced interference and failure probability.

[0003] As a key interface for signal transmission, the quality of the connection between the connector and the printed circuit board determines the electrical reliability and mechanical stability of the entire system.

[0004] However, the current method of connecting connectors to printed circuit boards is to use manual punch riveting, which has disadvantages such as poor quality consistency, easy damage to workpieces, and low production efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic riveting device for printed circuit boards, which solves the technical problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic riveting device for printed circuit boards, comprising a housing, a riveting frame, a transfer assembly, a pressing unit, and a driving assembly; The rivet bracket is used to place the printed circuit board. The rivet bracket is detachable and installed on the transfer assembly. The drive assembly is fixedly installed on the housing. The drive assembly is used to drive the transfer assembly to move horizontally. The crimping unit is used for automatic crimping of printed circuit boards. The crimping unit is fixedly installed at the center of the top plate of the housing. The crimping unit includes an upper punch assembly and a lower punch and positioning assembly.

[0007] Preferably, the riveting frame has a positioning groove, and the riveting frame has a plurality of positioning holes and riveting holes. Each pair of the riveting frame has a U-shaped adjustment groove, and a positioning block is installed in the U-shaped adjustment groove by a fourth locking nut. Each of the other pair of the riveting frame has a pressure block groove, and a pressure block is installed in the pressure block groove. The pressure block is installed in the pressure block groove by a limiting screw, and a spring limiting hole is provided in the pressure block, and a first spring is provided in the spring limiting hole.

[0008] Preferably, the transfer assembly includes a vertical slide, a horizontal slide, and an upper slide rod. A pair of horizontal slides are fixedly installed on the top plate of the housing, and horizontal sliders are slidably installed on each pair of horizontal slides. The two ends of the vertical slide are fixedly installed on a pair of horizontal sliders, and vertical sliders are slidably installed on the vertical slide. A stop block is fixedly installed on one of the horizontal sliders. The upper slide rod is fixedly installed on the vertical slider, and a rivet positioning groove for installing a rivet is provided on the upper slide rod.

[0009] Preferably, limit switches are provided at both ends of the horizontal carriage.

[0010] Preferably, the upper punch assembly includes an upper punch slide, a back plate, a push cylinder, and an upper punch head. The upper punch slide is fixedly installed on the housing. There is a pair of back plates, each with a stamping groove and a slide groove. The pair of back plates are slidably installed on the upper punch slide through the slide groove. An upper punch frame is fixedly installed in the pair of stamping grooves. A punch stop is slidably installed in the upper punch frame. The upper punch head is fixedly installed in the punch stop by a set screw. A lifting spring connects the punch stop and the punch frame. A cylinder mounting bracket is fixedly installed on the housing on one side of the upper punch slide. The rear end of the push cylinder is installed on the cylinder mounting bracket. The front end of the push cylinder passes through the upper punch slide, and a sliding pressure rod is installed on the telescopic end of the push cylinder through an adapter. The bottom of the sliding pressure rod is set as a stepped shape with an inclined surface. The end face of the punch stop pressing port is provided with an angle that matches the bottom of the sliding pressure rod.

[0011] Preferably, a lifting cover plate is fixedly installed on the top of a pair of back plates located at a pair of sliding seat grooves, and a lifting handle is movably installed on the lifting cover plate, the lifting handle being threadedly connected to the lifting cover plate.

[0012] Preferably, the punching and positioning assembly includes a punching cylinder, a punching head, and a positioning assembly. The punching cylinder is fixed to the housing by two pairs of punching cylinder rods and locking screws. A punching sleeve is fixedly installed on the top of the telescopic end of the punching cylinder. A punching guide sleeve is fitted on the punching sleeve. The punching head is movably installed on the punching sleeve. The bottom of the punching head is stepped. A stepped groove that matches the bottom of the punching head is opened on the top of the punching sleeve.

[0013] Preferably, the positioning component includes a positioning pin, a positioning pin base is fixedly installed on the top plate of the housing by a second locking nut, a positioning rod is slidably installed in the positioning pin base, the positioning pin is fixedly installed on the top of the positioning rod, a downward spring is sleeved on the positioning rod, a spring stop pin is screwed to the bottom of the second locking nut, a sensing pad is detachably installed at the bottom of the positioning rod through the center hole of the spring stop pin, a downward cylinder frame is fixedly installed on a pair of downward cylinder rods, a downward cylinder for pushing the sensing pad upward is fixedly installed at the bottom of the downward cylinder frame by a first locking nut, a laser bracket is fixedly installed on the downward cylinder frame, and a laser sensor is fixedly installed on the laser bracket.

[0014] Preferably, the drive assembly includes a motor, a lead screw, and a lead screw carriage. A pair of lead screw supports are fixedly installed on the housing. The lead screw is rotatably mounted on the lead screw supports. The motor is fixedly installed on one side of the lead screw support, and the motor drive end is fixedly connected to the lead screw. A lead screw carriage is screwed onto the lead screw, and a lever is fixedly installed on the lead screw carriage. The transfer assembly and the lever are fixedly connected through a connecting assembly.

[0015] Preferably, the connecting assembly includes an adjusting pin, one side of which is fixedly connected to a horizontal slider via a flange, the other side of which passes through a lever, and a second spring and a spring limiting sleeve are fitted on the adjusting pins located on both sides of the lever, and a third locking nut is screwed onto the end of the adjusting pin.

[0016] Beneficial effects This invention provides an automatic riveting device for printed circuit boards, which has the following advantages: 1. By installing a housing, a drive component can be mounted on the housing. Activating the drive component moves the transfer component. The transfer component allows the riveting bracket to be mounted on it for easy movement. The riveting bracket also allows the printed circuit board to be fixed to it, enabling its movement and riveting. The installation of an upper punch component and a lower punch positioning component enables automatic riveting of the circuit board. The lower punch positioning component, upon receiving a trigger signal and a trigger action signal, accurately positions the riveting bracket when it reaches the riveting position, ensuring more precise riveting. This effectively solves the problems of poor quality consistency, easy damage to workpieces, and low production efficiency associated with the current manual punch riveting method for connecting connectors and printed circuit boards. Furthermore, changing the riveting bracket allows for rapid product changeover. 2. The design incorporates a transfer structure where the riveting frame is connected to the slider via a slider flange. The slider is fixed to the slide, allowing for horizontal and vertical sliding. The upper and lower punches are designed as adjustable structures, with height adjustments achieved via a lifting handle, upper punch slide, and cylinder limit nut. The design also includes a sensing and motion control structure for the upper and lower punches. According to a preset program, once the laser sensor identifies the position, the upper and lower punches press together, achieving automatic riveting. Considering different production conditions, both manual and automatic modes are designed, controllable via a push-button switch. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of a printed circuit board; Figure 3 This is a schematic diagram of the rivet frame structure in this invention; Figure 4 This is a schematic diagram of the transfer structure in this invention; Figure 5 This is a schematic diagram of the structure of the upper punch assembly in this invention; Figure 6 This is a schematic diagram of the structure of the lower punch and positioning components in this invention; Figure 7 This is a schematic diagram of the driving component in this invention; Figure 8 This is a cross-sectional view of the positioning component in this invention; Figure 9 This is a schematic diagram of the rear side and internal structure of the housing of the present invention.

[0018] In the diagram: 1. Housing; 2. Rivet bracket; 2-1. Positioning groove; 2-2. Positioning hole; 2-3. Riveting hole; 2-4. Fourth locking nut; 2-5. Positioning block; 2-6. U-shaped adjustment groove; 2-7. Limiting screw; 2-8. Pressure block groove; 2-9. Pressure block; 2-10. First spring; 3. Transfer assembly; 3-1. Upper sliding rod; 3-2. Rivet bracket positioning groove; 3-3. Horizontal sliding bracket; 3-4. Horizontal slider; 3-5. Vertical slider; 3-6. Vertical carriage; 3-7. Stop block; 4. Upper punch assembly; 4-1. Upper punch slide; 4-2. Mounting bracket; 4-3. Push cylinder; 4-4. Lifting cover plate; 4-5. Lifting handle; 4-6. Back plate; 4-7. Punch stop; 4-8. Upper punch; 4-9. Lifting spring; 4-10. Upper punch frame; 4-11. Sliding rod; 4-12. Punch groove; 4-13. Slide groove 5. Lower punch and positioning assembly; 5-1. Positioning pin; 5-2. Positioning pin base; 5-3. Positioning pull rod; 5-4. Second locking nut; 5-5. Anti-spring pin; 5-6. Laser sensor; 5-7. Laser bracket; 5-8. Lower punch cylinder rod; 5-9. Lower punch cylinder; 5-10. Lower push cylinder; 5-11. Lower push cylinder bracket; 5-12. First locking nut; 5-13. Sensing pad; 5-14. Lower push 5-15 Spring; 5-16 Lower punch sleeve; 5-17 Lower punch guide sleeve; 5-18 Lower punch head; 6. Drive assembly; 6-1 Lead screw bracket; 6-2 Third locking nut; 6-3 Lead screw; 6-4 Lead screw slide; 6-5 Pull block; 6-6 Safety cover; 6-7 Spring limit sleeve; 6-8 Second spring; 6-9 Motor; 6-10 Limit switch; 6-11 Adjusting pin; 6-12 Push button switch. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] Please see Figures 1-8 The present invention provides a technical solution: an automatic riveting device for printed circuit boards, comprising a housing 1, a riveting frame 2, a transfer assembly 3, a pressing unit and a driving assembly 6; The rivet 2 is used to place the printed circuit board. The rivet 2 is detached and installed on the transfer assembly 3. The drive assembly 6 is fixedly installed on the housing 1. The drive assembly 6 is used to drive the transfer assembly 3 to move horizontally. The crimping unit is used to automatically crimp printed circuit boards. The crimping unit is fixedly installed at the center of the top plate of the housing 1. The crimping unit includes an upper punch assembly 4 and a lower punch and positioning assembly 5.

[0021] With the housing 1 installed, a drive assembly 6 can be installed on the housing 1. With the drive assembly 6 installed, starting the drive assembly 6 can drive the transfer assembly 3 to move. With the transfer assembly 3 installed, the rivet 2 can be installed on the transfer assembly 3 to facilitate the movement of the rivet 2. With the rivet 2 installed, the printed circuit board can be fixed on the rivet 2, thereby driving the printed circuit board to move, so as to facilitate the riveting of the circuit board. With the upper punch assembly 4 and the lower punch positioning assembly installed, the circuit board can be automatically riveted. With the lower punch positioning assembly installed, when the rivet 2 moves to the riveting position, after receiving the trigger signal and the trigger action signal, the lower punch positioning assembly can accurately position the rivet 2, making the riveting position more accurate. This can effectively solve the shortcomings of the current method of connecting connectors and printed circuit boards by using manual punch riveting, which has the disadvantages of poor quality consistency, easy damage to workpieces, and low production efficiency.

[0022] Furthermore, the rivet frame 2 is provided with a positioning groove 2-1, and a number of positioning holes 2-2 and riveting holes 2-3 are provided inside the rivet frame 2. A U-shaped adjustment groove 2-6 is provided on each of the two side frames of the rivet frame 2. A positioning block 2-5 is installed in the U-shaped adjustment groove 2-6 by means of a fourth locking nut 2-4. A pressure block groove 2-8 is provided on the other side frame of the rivet frame 2. A pressure block 2-9 is installed in the pressure block groove 2-8 by means of a limit screw 2-7. A spring limit hole is provided in the pressure block 2-9, and a first spring 2-10 is provided in the spring limit hole.

[0023] Adjust the positioning block 2-5 according to the width of the printed circuit board. After moving the U-shaped adjustment groove 2-6 to the appropriate position, tighten the fourth locking nut 2-4 to fix the positioning block 2-5. Place the first spring 2-10 into the spring limiting hole, and then place the pressure block 2-9 into the pressure block groove 2-8. Tighten the limiting screw 2-7 so that the pressure block 2-9 can be finely adjusted to achieve the pressing effect. After the printed circuit board is placed into the positioning groove 2-1, it is limited.

[0024] Furthermore, the transfer assembly 3 includes a vertical slide 3-6, a horizontal slide 3-3, and an upper slide rod 3-1. A pair of horizontal slides 3-3 are fixedly installed on the top plate of the housing 1. Horizontal sliders 3-4 are slidably installed on each of the pair of horizontal slides 3-3. The two ends of the vertical slide 3-6 are fixedly installed on the pair of horizontal sliders 3-4. A vertical slider 3-5 is slidably installed on the vertical slide 3-6. A stop block 3-7 is fixedly installed on one of the horizontal sliders 3-4. The upper slide rod 3-1 is fixedly installed on the vertical slider 3-5. A positioning groove 2-1 for installing the rivet 2 is provided on the upper slide rod 3-1.

[0025] After placing the rivet 2 in the positioning groove 2-1, insert the locking screw into the positioning hole 2-2 and tighten it to fix the rivet 2. When changing the product model, you only need to replace the rivet 2 with a different model. The upper slide rod 3-1 is connected to the vertical slide 3-5 through the flange of the vertical slide 3-5. It moves vertically through the vertical slide 3-6. The stop block 3-7 plays a limiting role to prevent the slide from falling. The slide is connected to the horizontal slide 3-4 through the flange of the horizontal slide 3-4. It moves horizontally through the horizontal slide 3-3.

[0026] Furthermore, limit switches 6-10 are installed at both ends of the horizontal carriage 3-3. The function of the limit switches 6-10 is to limit the horizontal position of the transfer assembly 3. When the limit switches 6-10 sense the signal, the motor 6-9 stops working to prevent equipment damage. The housing 1 is also equipped with push-button switches 6-12, which include left-moving, right-moving, emergency stop, and manual functions. After pressing the corresponding button, the equipment is controlled by the program settings of the electrical control section.

[0027] Furthermore, the upper punch assembly 4 includes an upper punch slide 4-1, a back plate 4-6, a push cylinder 4-3, and an upper punch head 4-8. The upper punch slide 4-1 is fixedly installed on the housing 1. There is a pair of back plates 4-6, each of which has a stamping groove 4-12 and a slide groove 4-13. The pair of back plates 4-6 are slidably installed on the upper punch slide 4-1 through the slide groove 4-13. An upper punch frame 4-10 is fixedly installed in the pair of stamping grooves 4-12, and a punch stop 4-7 is slidably installed in the upper punch frame 4-10. The upper punch head 4-8 is fixedly installed on the housing 1 by a set screw. Inside the punch stop 4-7, a lifting spring 4-9 is connected between the punch stop 4-7 and the upper punch frame 4-10. A cylinder mounting bracket 4-2 is fixedly installed on the box 1 located on one side of the upper punch slide 4-1. The rear end of the push cylinder 4-3 is installed on the cylinder mounting bracket 4-2. The front end of the push cylinder 4-3 passes through the upper punch slide 4-1. The telescopic end of the push cylinder 4-3 is equipped with a sliding pressure rod 4-11 through an adapter. The bottom of the sliding pressure rod 4-11 is set as a stepped shape with an inclined surface. The end face of the pressing port of the punch stop 4-7 is provided with an angle that matches the bottom of the sliding pressure rod 4-11.

[0028] Secure the bottom of the upper punch slide 4-1 to the housing 1. Two back plates 4-6 are installed on the upper punch slide 4-1 via slide grooves 4-13, creating a clearance fit between the back plates 4-6 and the upper punch slide 4-1. The tail of the push cylinder 4-3 is fixed to the cylinder mounting bracket 4-2, and its height can be adjusted via a U-shaped hole. The upper punch frame 4-10 is fixed to the back plate 4-6 via a punch frame groove, and its height can be adjusted via a U-shaped hole within the punch frame groove. The upper punch head 4-8 is fixed to the punch stop 4-7 via a set screw, and moves as a whole with the punch stop 4-7. Start the push... The cylinder 4-3 extends its telescopic end, causing the sliding rod 4-11 to move forward. To ensure that the upper punch 4-8 can follow the cylinder's movement, the front end of the sliding rod 4-11 is designed as a stepped shape with an angle, and the end face of the pressing port of the punch stop 4-7 also has an angle. When the sliding rod 4-11 moves forward, it will exert a downward pressure on the punch stop 4-7, causing the upper punch 4-8 to move. The function of the lifting spring 4-9 is to move the punch stop 4-7 upward and return it to its original position after the telescopic end of the cylinder 4-3 is reset.

[0029] Furthermore, a lifting cover plate 4-4 is fixedly installed on the top of a pair of back plates 4-6 located at a pair of sliding seat grooves 4-13. A lifting handle 4-5 is movably installed on the lifting cover plate 4-4, and the lifting handle 4-5 is threadedly connected to the lifting cover plate 4-4.

[0030] The lifting cover plate 4-4 is fastened to the back plate 4-6. The lifting handle 4-5 is screwed into the threaded thread of the lifting cover plate 4-4. Rotate the lifting handle 4-5 so that its lower end contacts the upper end of the upper punch slide 4-1. If you continue to rotate, the back plate 4-6 can be moved upward along the upper punch slide 4-1. If you rotate in the opposite direction, the back plate 4-6 will move downward by its own weight. After adjusting the lifting handle 4-5 to a suitable height, tighten the screws to fix the back plate 4-6 to the upper punch slide 4-1.

[0031] Furthermore, the punch and positioning assembly 5 includes a punch cylinder 5-9, a punch head 5-17, and a positioning assembly. The punch cylinder 5-9 is fixed inside the housing 1 by two pairs of punch cylinder rods 5-8 and locking screws. A punch sleeve 5-15 is fixedly installed on the top of the telescopic end of the punch cylinder 5-9. A punch guide sleeve 5-16 is fitted on the punch sleeve 5-15. The punch head 5-17 is movably installed on the punch sleeve 5-15. The bottom of the punch head 5-17 is stepped. The top of the punch sleeve 5-15 has a stepped groove that matches the bottom of the punch head 5-17.

[0032] The lower punch cylinder 5-9 is fixed to the housing 1 by the lower punch cylinder rod 5-8 and the locking screw. Since the lower punch head 5-17 has a stepped structure, the lower punch sleeve 5-15 is designed as a stepped groove structure. The upper end of the lower punch sleeve 5-15 is closed to facilitate the fixing of the lower punch head 5-17. The lower end of the lower punch sleeve 5-15 is tightened by the telescopic end of the lower punch cylinder 5-9. The function of the lower punch guide sleeve 5-16 is to make the lower punch head 5-17 move vertically and limit its movement.

[0033] Furthermore, the positioning component includes a positioning pin 5-1. A positioning pin base 5-2 is fixedly installed on the top plate of the housing 1 by a second locking nut 5-4. A positioning pull rod 5-3 is slidably installed inside the positioning pin base 5-2. The positioning pin 5-1 is fixedly installed on the top of the positioning pull rod 5-3. A lower push spring 5-14 is sleeved on the positioning pull rod 5-3. A spring stop nail 5-5 is screwed to the bottom of the second locking nut 5-4. A sensing pad 5-13 is detached and installed at the bottom of the positioning pull rod 5-3 through the center hole of the spring stop nail 5-5. A lower push cylinder frame 5-11 is fixedly installed on a pair of lower push cylinder rods 5-8. A lower push cylinder 5-10 for pushing the sensing pad 5-13 upward is fixedly installed at the bottom of the lower push cylinder frame 5-11 by a first locking nut 5-12. A laser bracket 5-7 is fixedly installed on the lower push cylinder frame 5-11. A laser sensor 5-6 is fixedly installed on the laser bracket 5-7.

[0034] After the lower cylinder bracket 5-11 is height-adjusted, it is fixed to the lower cylinder rod 5-8 with a set screw. The lower spring 5-14 is inserted into the positioning pull rod 5-3, and then the positioning pin 5-1, the anti-spring nail 5-5, and the sensing pad 5-13 are tightened. The whole assembly is fixed to the housing 1 by the positioning pin base 5-2 and the second positioning locking nut 5-4. When the rivet 2 moves, it presses down the positioning pin 5-1. When the positioning hole 2-2 moves to the position of the positioning pin 5-1, the positioning pin 5-1 is released under the action of the lower spring 5-14. 1. The spring is ejected into the positioning hole to position the rivet 2 and can drive the sensing pad 5-13 to the initial position. After the laser sensor 5-6 detects the sensing pad 5-13, it triggers an action signal. The telescopic end of the lower cylinder 5-10 pushes upward, pushing the sensing pad 5-13 to rise. Under the combined push of the spring force and the lower cylinder 5-10, the positioning pin 5-1 can be fully inserted into the positioning hole 2-2 to ensure the accurate positioning of the rivet 2. Then, the punch 4-8 and the lower punch 5-17 on the equipment press down in sequence to complete the riveting.

[0035] Furthermore, the drive assembly 6 includes a motor 6-9, a lead screw 6-3, and a lead screw carriage 6-4. A pair of lead screw supports 6-1 are fixedly installed on the housing 1. The lead screw 6-3 is rotatably mounted on the lead screw support 6-1. The motor 6-9 is fixedly installed on one side of the lead screw support 6-1, and the drive end of the motor 6-9 is fixedly connected to the lead screw 6-3. The lead screw carriage 6-4 is screwed onto the lead screw 6-3, and a lever is fixedly installed on the lead screw carriage 6-4. The transfer assembly 3 is fixedly connected to the lever through a connecting assembly.

[0036] The motor 6-9 is installed, and starting the motor 6-9 can drive the lead screw 6-3 to rotate. A pair of lead screw brackets 6-1 are installed and fixedly installed on the housing 1, which can fix the lead screw 6-3 to the pair of lead screw brackets 6-1. The rotation of the lead screw 6-3 can drive the lead screw slide 6-4 to move, thereby driving the transfer assembly 3 to move. A safety cover 6-6 is installed on the housing 1 to protect the lead screw 6-3 and ensure the safe operation of the equipment.

[0037] Furthermore, the connecting assembly includes an adjusting pin 6-11. One side of the adjusting pin 6-11 is fixedly connected to the horizontal slider 3-4 via a flange, and the other side of the adjusting pin 6-11 passes through the lever 6-5. A second spring 6-8 and a spring limiting sleeve 6-7 are fitted on the adjusting pins 6-11 located on both sides of the lever 6-5. A third locking nut 6-2 is screwed onto the end of the adjusting pin 6-11.

[0038] After inserting a spring limiting sleeve 6-7 and a second spring 6-8 into the adjusting pin 6-11, insert the adjusting pin into the lever 6-5. Then insert another spring limiting sleeve 6-7 and a second spring 6-8 into the adjusting pin 6-11. Finally, tighten the third locking nut 6-2. The other side of the adjusting pin 6-11 is connected to the transfer assembly 3 through the lower slider flange, and the other side of the lever 6-5 is connected to the lead screw slide 6-4.

[0039] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical connections between the various electrical components are completed in sequence. The detailed connection methods are well-known technologies in the field. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0040] The working principle and usage process of this invention are as follows: In use, the protrusions on both sides of the riveting frame 2 are inserted into the riveting frame positioning groove 3-2 of the upper slide rod 3-1 and locked. The printed circuit board containing the connector and rivets is placed into the riveting frame 2. Under the pressure of the pressure block 2-9, the printed circuit board is accurately positioned in the riveting frame 2. First, push the riveting frame 2 to one side until the vertical slider 3-5 on that side contacts the stop block 3-7 on the same side. Press the left / right button of the button switch 6-12 to realize automatic riveting. After completing the riveting of a single row of rivets, push the riveting frame 2 to another layer until the vertical slider 3-5 on the other side contacts the stop block 3-7 on the same side to perform the riveting of the next row of rivets. After the processing is completed, the printed circuit board can be taken out.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic riveting device for printed circuit boards, characterized in that, Includes housing, riveting frame, transfer assembly, crimping unit, and drive assembly; The rivet bracket is used to place the printed circuit board. The rivet bracket is detachable and installed on the transfer assembly. The drive assembly is fixedly installed on the housing. The drive assembly is used to drive the transfer assembly to move horizontally. The crimping unit is used for automatic crimping of printed circuit boards. The crimping unit is fixedly installed at the center of the top plate of the housing. The crimping unit includes an upper punch assembly and a lower punch and positioning assembly. The transfer assembly includes a vertical slide, a horizontal slide, and an upper slide rod. A pair of horizontal slides are fixedly installed on the top plate of the housing, and horizontal sliders are slidably installed on each pair of horizontal slides. The two ends of the vertical slide are fixedly installed on a pair of horizontal sliders, and vertical sliders are slidably installed on the vertical slide. A stop block is fixedly installed on one of the horizontal sliders. The upper slide rod is fixedly installed on the vertical slider, and a rivet positioning groove for installing a rivet is provided on the upper slide rod. The upper punch assembly includes an upper punch slide, a back plate, a push cylinder, and an upper punch head. The upper punch slide is fixedly installed on the housing. There is a pair of back plates, each with a stamping groove and a slide groove. The pair of back plates are slidably installed on the upper punch slide through the slide groove. An upper punch frame is fixedly installed in the pair of stamping grooves. A punch stop is slidably installed in the upper punch frame. The upper punch head is fixedly installed in the punch stop by a set screw. A lifting spring connects the punch stop and the upper punch frame. A cylinder mounting bracket is fixedly installed on the housing on one side of the upper punch slide. The rear end of the push cylinder is installed on the cylinder mounting bracket. The front end of the push cylinder passes through the upper punch slide, and a sliding pressure rod is installed on the telescopic end of the push cylinder through an adapter. The bottom of the sliding pressure rod is set as a stepped shape with an inclined surface. The end face of the punch stop pressing port is provided with an angle that matches the bottom of the sliding pressure rod. The punching and positioning assembly includes a punching cylinder, a punching head, and a positioning component. The punching cylinder is fixed to the housing by two pairs of punching cylinder rods and locking screws. A punching sleeve is fixedly installed on the top of the telescopic end of the punching cylinder. A punching guide sleeve is fitted on the punching sleeve. The punching head is movably installed on the punching sleeve. The bottom of the punching head is stepped. A stepped groove that matches the bottom of the punching head is opened on the top of the punching sleeve.

2. The automatic riveting equipment for printed circuit boards according to claim 1, characterized in that, The riveting frame has a positioning groove, and the riveting frame has several positioning holes and riveting holes. Each pair of the riveting frame has a U-shaped adjustment groove, and a positioning block is installed in the U-shaped adjustment groove by a fourth locking nut. Each other pair of the riveting frame has a pressure block groove, and a pressure block is installed in the pressure block groove. The pressure block is installed in the pressure block groove by a limit screw, and a spring limit hole is provided in the pressure block. A first spring is provided in the spring limit hole.

3. The automatic riveting equipment for printed circuit boards according to claim 1, characterized in that, Limit switches are installed at both ends of the horizontal carriage.

4. The automatic riveting equipment for printed circuit boards according to claim 1, characterized in that, A lifting cover plate is fixedly installed on the top of a pair of back plates located at a pair of sliding seat slots, and a lifting handle is screwed onto the lifting cover plate.

5. The automatic riveting equipment for printed circuit boards according to claim 1, characterized in that, The positioning component includes a positioning pin. A positioning pin base is fixedly installed on the top plate of the housing by a second locking nut. A positioning rod is slidably installed in the positioning pin base. The positioning pin is fixedly installed on the top of the positioning rod. A bottom spring is sleeved on the positioning rod. A spring stop pin is screwed to the bottom of the second locking nut. A sensing pad is detachably installed at the bottom of the positioning rod through the center hole of the spring stop pin. A pair of downward-push cylinder rods are fixedly mounted with a downward-push cylinder bracket. The bottom of the downward-push cylinder bracket is fixedly mounted with a downward-push cylinder for pushing the sensing pad upward by a first locking nut. A laser bracket is fixedly mounted on the downward-push cylinder bracket, and a laser sensor is fixedly mounted on the laser bracket.

6. The automatic riveting equipment for printed circuit boards according to claim 1, characterized in that, The drive assembly includes a motor, a lead screw, and a lead screw carriage. A pair of lead screw supports are fixedly installed on the housing. The lead screw is rotatably mounted on the lead screw supports. The motor is fixedly installed on one side of the lead screw support, and the motor drive end is fixedly connected to the lead screw. A lead screw carriage is screwed onto the lead screw, and a lever is fixedly installed on the lead screw carriage. The transfer assembly and the lever are fixedly connected through a connecting assembly.

7. The automatic riveting equipment for printed circuit boards according to claim 6, characterized in that, The connecting assembly includes an adjusting pin, one side of which is fixedly connected to a horizontal slider via a flange, the other side of which passes through a lever, and a second spring and a spring limiting sleeve are fitted on the adjusting pins located on both sides of the lever, and a third locking nut is screwed onto the end of the adjusting pin.

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