Counterforce spring automatic riveting equipment

Abstract

The application discloses a counterforce spring plate automatic riveting equipment and relates to the technical field of riveting equipment. The equipment comprises a riveting tool and an electric control table. The riveting tool comprises an upper punch assembly, a lower die and a base. The base is fixedly installed on the electric control table. The lower die comprises a sliding base, a support for placing a yoke, a clamping assembly for fixing the yoke and a limiting plate for limiting the counterforce spring plate. The bottom of the sliding base is fixedly installed with a sliding base plate. The sliding base plate is slidably installed on the base. The support is fixedly installed at the center of the sliding base. The limiting plate is fixedly installed on the support. The clamping assembly comprises a left limiting frame, a right limiting frame matched with the left limiting frame and an anti-falling clamping structure for preventing the counterforce spring plate from falling and limiting the riveting position of the yoke. The equipment effectively solves the technical problems that the counterforce spring plate is assembled by using the spot welding mode, the strength is unstable, the pull-off force is small and the stability of manual riveting of the counterforce spring plate is low.

Description

Technical Field

[0001] This invention relates to the field of riveting equipment technology, specifically to an automatic riveting device for reaction springs. Background Technology

[0002] Onboard relays are a newly developed type of relay, primarily used in track control systems. Therefore, the quality of these relays directly impacts train safety and passenger safety. Initially, designers mostly assembled the reaction springs of onboard relays using spot welding or manual riveting.

[0003] However, when using spot welding to assemble the reaction spring of the onboard relay, the reaction spring is prone to deformation during the spot welding process, and the spot welding strength is unstable and the pull-out force is small, so it cannot meet the requirements of production use. If it is assembled by manual riveting, the riveting stability is completely controlled by manpower, which increases the workload of the staff and requires high operating skills. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automatic riveting device for reaction springs, which solves the technical problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic riveting device for reaction springs, comprising a riveting fixture and an electrical control table; the riveting fixture comprises an upper punch assembly, a lower die, and a base, the base being fixedly mounted on the electrical control table; the lower die comprises a slide block, a bracket for placing a yoke, a clamping assembly for fixing the yoke, and a limiting plate for restricting the reaction springs; a slide block base plate is fixedly mounted at the bottom of the slide block, the slide block base plate being slidably mounted on the base; the bracket is fixedly mounted at the center of the slide block; the limiting plate is fixedly mounted on the bracket; the clamping assembly comprises a left limiting frame, a right limiting frame cooperating with the left limiting frame, and an anti-drop clamping structure for preventing the reaction springs from falling and restricting the riveting position of the yoke; both the left and right limiting frames are slidably mounted within the slide block.

[0006] Preferably, an adjusting shaft is rotatably mounted on the slide block, and a pair of matching semi-elliptical shaft core limiting grooves are provided on the left limiting frame and the right limiting frame. One end of the adjusting shaft passes through the pair of shaft core limiting grooves and the slide block to the outside of the slide block. An elliptical adjusting shaft core matching the shaft core limiting grooves is fixedly mounted on the adjusting shaft located in the pair of shaft core limiting grooves.

[0007] Preferably, a pair of adjusting screws are screwed onto the two side walls of the slide block, one end of each pair of adjusting screws passes through the two side walls of the slide block and is provided with a first spring, and the pair of first springs abut against the left limiting frame and the right limiting frame respectively.

[0008] Preferably, the anti-fall clamping structure includes a pressure bar and a yoke block. The yoke block is fixedly installed on the bracket. A groove is provided on the top of the yoke block, and a second spring is provided in the groove. A pressure pin is installed in the groove above the second spring. A pressure shaft is inserted into the yoke block, and a pressure shaft handle for fastening the pressure shaft is installed on the yoke block. A slot is provided on the pressure shaft located in the groove, and the pressure bar is inserted into the slot.

[0009] Preferably, the upper punch assembly includes a punch, a pair of support frames are fixedly installed on the base, a support rod is fixedly installed between the pair of support frames, a cylinder mounting plate is installed on the support frame, an upper punch cylinder is fixedly installed on the cylinder mounting plate, the punch is fixedly installed on the telescopic end of the upper punch cylinder, a punch fixing frame is fixedly installed on the telescopic end of the upper punch cylinder, the bottom of the punch passes through the punch fixing frame, and a punch compression spring is provided between the punch and the punch pressure sleeve.

[0010] Preferably, the base includes a base cover plate, a base bottom plate, and a housing plate. The base bottom plate is fixedly installed on the electrical control table. The housing plate, the base cover plate, and the base bottom plate together form a housing. A lower mold moving structure is installed inside the housing.

[0011] Preferably, the lower mold moving structure includes a first cylinder and a positioning block. A second cylinder is fixedly installed inside the housing. A first cylinder base is fixedly installed on the telescopic end of the second cylinder. A first cylinder is fixedly installed on the first cylinder base. A positioning block is fixedly connected to the telescopic end of the first cylinder. The positioning block is fixedly connected to the slide base plate. A strip hole is opened on the base cover plate. The positioning block is slidably installed in the strip hole.

[0012] Preferably, a coil bracket is fixedly installed on the bracket, and a rubber pad is provided on the coil bracket.

[0013] Preferably, the electrical control table is equipped with electrical control components for controlling the equipment.

[0014] Beneficial effects This invention provides an automatic riveting device for reaction springs, which has the following beneficial effects: 1. The device is equipped with an upper punch assembly for riveting reaction springs. A sliding block is installed for easy loading and unloading. Left and right limit frames are installed to clamp and limit the yoke. Limit plates are installed to limit the reaction springs. The right limit frame is inserted into the left limit frame and simultaneously placed into the sliding block. This structure prevents the left and right limit frames from rotating or moving during riveting, which is equivalent to adding a rotation arm. A bracket is installed to place the yoke (assembly). The above structure can effectively fix the yoke and reaction springs, thereby greatly improving the stability during riveting. No manual control of riveting stability is required, and the pull-out force is large. 2. Insert the rivet hole of the reaction spring into the yoke boss, and press the punch against the boss to complete the riveting between the reaction spring and the yoke. Due to space limitations during riveting, the riveting support surface is small. In order to avoid excessive riveting force during riveting and damage to the support surface, the two bosses of the yoke are riveted in sequence. If the two bosses are riveted at the same time, the large riveting force will also cause deformation of the yoke.

[0015] 3. An adjusting shaft is installed, passing through the slide and then the right limit bracket. The adjusting shaft then passes through the square hole of the adjusting shaft core (placed in the shaft core limiting groove), another oblong hole in the right limit bracket, and a small hole at the rear end of the slide. By setting the adjusting shaft core to an elliptical shape, rotating the adjusting shaft core can simultaneously push the left and right limit brackets apart or merging them inwards. By designing the shaft hole on the right limit bracket as an oblong hole and creating a clearance fit between the square shaft on the adjusting shaft and the square hole of the adjusting shaft core, the right limit bracket can move while the adjusting shaft core remains stationary. The shaft core limiting groove on the right limit bracket effectively prevents the adjusting shaft core from moving along the square shaft. Tightening the fastening nut onto the adjusting shaft's thread further prevents movement. The shaft core limiting groove is designed on the right limit bracket. To prevent the adjusting shaft from moving, tighten the fastening nut onto the adjusting shaft's threaded screw. Fix the bracket to the slide with screws. Under the action of the first spring, push the left and right limit brackets towards the bracket. Rotate the adjusting shaft to drive the adjusting shaft core to rotate. By designing the adjusting shaft core into an ellipse shape, when the adjusting shaft rotates the adjusting shaft core to the horizontal position of the minimum diameter of the ellipse, the left and right limit brackets are in close contact with the bracket under the action of the first spring. At this time, the distance between the left and right limit brackets is the smallest, which is the position for clamping the part. At this time, the adjusting shaft core is in the shaft core limiting groove of the left and right limit brackets, forming a clearance fit. Continue to rotate the adjusting shaft, and under the action of the adjusting shaft core, push the left and right limit brackets to both sides. When the minimum diameter of the ellipse of the adjusting shaft core is vertical, the distance between the left and right limit brackets reaches its maximum value, which is the position for placing the part. 4. Place the spring into the hole of the yoke stop block, press the pressure pin into the hole of the yoke stop block, and insert the pressure shaft into the shaft hole of the yoke stop block. The part of the pressure shaft that protrudes is tightly fitted together with the square hole of the pressure shaft handle. The pressure strip is tightly fitted into the slot in the middle of the pressure shaft. Under the action of the spring force, the upper end face of the pressure pin presses on the square shaft in the middle of the pressure shaft, which can effectively prevent the pressure shaft from rotating. A certain torque must be given to rotate the pressure shaft handle. When the pressure shaft handle rotates the pressure strip to the horizontal, the front end of the pressure strip presses on the reaction spring, preventing the reaction spring from falling off when the slide moves, which effectively improves the stability of fixing the reaction spring when the slide moves. Attached Figure Description

[0016] 1. Figure 1 This invention relates to a reaction spring riveting device; 2. Figure 2 This is a schematic diagram of the reaction spring riveting part of the present invention; 3. Figure 3 This is a schematic diagram of the overall reaction spring riveting device of the present invention; 4. Figure 4 This is a schematic diagram of the overall electrical control part of the reaction spring riveting device of the present invention; 5. Figure 5 This is a schematic diagram of the overall structure of the reaction spring riveting fixture; 6. Figure 6 Schematic diagram of the anti-drop clamping structure for the reaction spring riveting fixture; 7. Figure 7 Schematic diagram of the lower mold structure for riveting fixture; 8. Figure 8 Schematic diagram of the lower mold structure for riveting fixture; 9. Figure 9 Schematic diagram of the lower mold structure for riveting fixture; 10. Figure 10 Schematic diagram of the lower mold structure for riveting fixture; 11. Figure 11 Schematic diagram of the lower mold structure for riveting fixture; 12. Figure 12 Schematic diagram of the lower mold structure for riveting fixture; 13. Figure 13 This is a schematic diagram showing the positioning of the workpiece within the lower die during riveting. 14. Figure 14 Schematic diagram of the anti-drop clamping structure for the reaction spring riveting fixture; 15. Figure 15 Schematic diagram of the anti-drop clamping structure for the reaction spring riveting fixture; 16. Figure 16 Schematic diagram of the upper punch structure assembly for the reaction spring riveting fixture; 17. Figure 17 Schematic diagram of the upper punch structure assembly for the reaction spring riveting fixture; 18. Figure 18 Schematic diagram of the upper punch structure assembly for the reaction spring riveting fixture; 19. Figure 19 This is a schematic diagram of the lower mold moving part. 20. Figure 20 This is a schematic diagram of the lower mold moving part. twenty one. Figure 21 This is a schematic diagram of the base's external structure.

[0017] In the diagram: 1. Riveting fixture; 1-1. Lower die; 1-2. Upper punch assembly; 1-3. Upper punch cylinder; 1-4. Base; 1-5. Anti-fall clamping structure; 1-6. Lower die moving structure; 1-7. Cylinder mounting plate; 1-8. Support frame; 1-10. Support rod; 1-1-1. Bracket; 1-1-2. Limiting plate; 1-1-3. Coil bracket; 1-1-5, Rubber pad; 1-1-6, Right limit bracket; 1-1-6-3, Shaft core limit groove; 1-1-7, Adjusting shaft; 1-1-8, Adjusting shaft core; 1-1-9, Left limit bracket; 1-1-9-1, Riveting support surface; 1-1-9-2, Yoke clamping end; 1-1-10, Slide; 1-1-11, Slide base plate; 1-1-12, Fastening nut; 1-1-13, First spring; 1-1-14, Adjusting screw; 1-2-1, Punch; 1-2-2, Riveting joint pin; 1-2-3, Punch fixing bracket; 1-2-4, Punch compression spring; 1-2-5, Punch pressure sleeve; 1-4, Base; 1-4-1, Base cover plate; 1-4-2, Base lower plate; 1-4-3, Base column; 1-4-8, Box panel; 1-5-1, Yoke stop block; 1-5-2, Pressure pin handle; 1-5-3, Pressure pin; 1-5-4, Pressure strip; 1-5-5, Second spring; 1-5-6, Pressure pin; 1-5-7, Slot; 1-6-1, Positioning block; 1-6-3, First cylinder; 1-6-4, First cylinder base; 1-6-5, Second cylinder; 2, Electrical control table; 3, Electrical control components. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," etc., are used interchangeably. Figure 1 The orientation is used as a reference.

[0019] Please see Figure 1-21This invention provides a technical solution: an automatic riveting device for reaction springs, characterized in that it includes a riveting fixture 1 and an electrical control table 2; the riveting fixture 1 includes an upper punch assembly 1-2, a lower die 1-1, and a base 1-4, the base 1-4 being fixedly installed on the electrical control table 2; the lower die 1-1 includes a slide 1-1-10, a bracket 1-1-1 for placing the yoke, a clamping assembly for fixing the yoke, and a limiting plate 1-1-2 for limiting the reaction springs; a slide base plate 1-1-11 is fixedly installed at the bottom of the slide 1-1-10. The slide base plate 1-1-11 is slidably installed on the base 1-4, the bracket 1-1-1 is fixedly installed at the center of the slide 1-1-10, the limiting plate 1-1-2 is fixedly installed on the bracket 1-1-1, and the clamping assembly includes a left limiting frame 1-1-9, a right limiting frame 1-1-6 that cooperates with the left limiting frame 1-1-9, and an anti-falling clamping structure 1-5 for preventing the reaction spring from falling and limiting the riveting position of the yoke. Both the left limiting frame 1-1-9 and the right limiting frame 1-1-6 are slidably installed in the slide 1-1-10.

[0020] In this embodiment, the upper punch assembly 1-2 is installed for riveting the reaction spring sheet. The slide block 1-1-10 is slidably installed to facilitate loading and unloading. The left limit frame 1-1-9 and the right limit frame 1-1-6 are installed to clamp and limit the yoke. The limit plate 1-1-2 is installed to limit the reaction spring sheet. By inserting the right limit frame 1-1-6 into the left limit frame 1-1-9 and simultaneously placing it into the slide block 1-1-10, this structure prevents the left limit frame 1-1-9 and the right limit frame 1-1-6 from rotating or moving during riveting, which is equivalent to adding a rotation power arm. The bracket 1-1-1 is installed to place the yoke. The above structure can play a good role in fixing the yoke and the reaction spring sheet, thereby greatly improving the stability during riveting.

[0021] As an embodiment of the present invention, an adjusting shaft 1-1-7 is rotatably mounted on the slide 1-1-10. A pair of matching shaft core limiting grooves 1-1-6-3 are opened on the left limiting frame 1-1-9 and the right limiting frame 1-1-6 respectively. One end of the adjusting shaft 1-1-7 passes through the pair of shaft core limiting grooves 1-1-6-3 and the slide 1-1-10 to the outside of the slide 1-1-10. An elliptical adjusting shaft core 1-1-8 is fixedly mounted on the adjusting shaft 1-1-7 located in the pair of shaft core limiting grooves 1-1-6-3.

[0022] In this embodiment, by installing an adjusting shaft 1-1-7, and having the adjusting shaft 1-1-7 pass through the slide 1-1-10, and then through an oblong hole in the right limiting bracket 1-1-6, the adjusting shaft 1-1-7 continues to move, passing through the square hole of the adjusting shaft core 1-1-8 placed in the shaft core limiting groove 1-1-6-3, another oblong hole in the right limiting bracket 1-1-6, and the small hole at the rear end of the slide. Since the adjusting shaft core 1-1-8 is elliptical, rotating the adjusting shaft core 1-1-8 can simultaneously push the left limiting bracket 1-1-9 and the right limiting bracket 1-1-6 to both sides or... By merging inwards, and designing the through hole on the right limit bracket 1-1-6 as an oblong hole, and forming a clearance fit between the square shaft on the adjusting shaft 1-1-7 and the square hole on the adjusting shaft core 1-1-8, the limit bracket 1-1-6 can move while the adjusting shaft 1-1-7 remains stationary. By designing a shaft core limiting groove 1-1-6-3 on the right limit bracket 1-1-6, the adjusting shaft core 1-1-8 can be effectively prevented from moving along the square shaft. By tightening the fastening nut 1-1-12 onto the screw thread of the adjusting shaft, the moving of the adjusting shaft 1-1-7 can be prevented. A shaft core limiting groove 1-1-6-3 is designed on 1-1-6. To prevent the adjusting shaft 1-1-7 from moving, the fastening nut 1-1-12 is screwed onto the screw thread of the adjusting shaft. The bracket 1-1-1 is fixed to the slide 1-1-10 with screws. Under the action of the first spring 1-1-13, the left and right limiting brackets are pushed towards the bracket 1-1-1. By rotating the adjusting shaft 1-1-7, the adjusting shaft core 1-1-8 is driven to rotate. By designing the adjusting shaft core 1-1-8 into an elliptical shape, when the adjusting shaft 1-1-7 rotates the adjusting shaft core 1-1-8 to the elliptical shape... When the minimum diameter is horizontal, the left and right limit brackets are in close contact with the bracket 1-1-1 under the action of the first spring 1-1-13. At this time, the distance between the left and right limit brackets is the smallest, which is the position for clamping the part. At this time, the adjusting shaft 1-1-8 is in the shaft limiting groove 1-1-6-3 of the left and right limit brackets, forming a clearance fit. Continue to rotate the adjusting shaft 1-1-7. Under the action of the adjusting shaft 1-1-8, the left and right limit brackets are pushed to both sides. When the minimum diameter of the ellipse of the adjusting shaft 1-1-8 is vertical, the distance between the left and right limit brackets reaches the maximum value, which is the position for placing the part.

[0023] As an embodiment of the present invention, a pair of adjusting screws 1-1-14 are screwed onto the two side walls of the slide 1-1-10. One end of the pair of adjusting screws 1-1-14 passes through the two side walls of the slide 1-1-10 and is provided with a first spring 1-1-13. The pair of first springs 1-1-13 abut against the left limit frame 1-1-9 and the right limit frame 1-1-6 respectively.

[0024] In this embodiment, by passing the spring 1-1-13 through the front end of the adjusting screw 1-1-14 and through the screw hole of the slide together, the adjusting screw 1-1-14 is rotated to screw it into the screw hole of the slide. The other end of the first spring 1-1-13 is inserted into the recess of the limiting frame. Tightening the adjusting screw 1-1-14 can compress the first spring 1-1-13, thereby driving the left limiting frame 1-1-9 and the right limiting frame 1-1-6 to move closer to the bracket 1-1-1. Therefore, the pressure of the spring on the limiting frame is adjusted by adjusting the depth of the adjusting screw 1-1-14 into the screw hole of the slide 1-1-10.

[0025] As an embodiment of the present invention, the anti-fall clamping structure 1-5 includes a pressure bar 1-5-4 and a yoke block 1-5-1. The yoke block 1-5-1 is fixedly installed on the bracket 1-1-1. A groove is provided on the top of the yoke block 1-5-1. A second spring 1-5-5 is provided in the groove. A pressure pin 1-5-3 is installed in the groove above the second spring 1-5-5. A pressure shaft 1-5-6 is inserted into the yoke block 1-5-1. A pressure shaft handle 1-5-2 for fastening the pressure shaft 1-5-6 is installed on the yoke block 1-5-1. A slot 1-5-7 is provided on the pressure shaft 1-5-6 located in the groove. The pressure bar 1-5-4 is inserted into the slot 1-5-7.

[0026] In this embodiment, spring 1-5-5 is placed in the hole of yoke block 1-5-1, pressing pin 1-5-3 is pressed into the hole of yoke block 1-5-1, pressing shaft 1-5-6 is inserted into the shaft hole of yoke block 1-5-1, and the part of pressing shaft 1-5-6 that protrudes is tightly fitted together with the square hole of pressing shaft handle 1-5-2. Pressing strip 1-5-4 is tightly fitted into the slot 1-5-7 in the middle of pressing shaft. Under the action of elastic force, the upper end face of pressing pin 1-5-3 presses on the middle square shaft of pressing shaft 1-5-6, which can effectively prevent pressing shaft 1-5-6 from rotating. A certain torque must be given to rotate pressing shaft handle 1-5-2. When pressing shaft handle 1-5-2 rotates pressing strip 1-5-4 to the horizontal, the front end of pressing strip 1-5-4 presses on the reaction spring, preventing the reaction spring from falling off when slide block 1-1-10 moves.

[0027] In one embodiment of the present invention, the upper punch assembly 1-2 includes a punch 1-2-1, a pair of support frames 1-8 fixedly installed on the base 1-4, a support rod 1-10 fixedly installed in the middle of the pair of support frames 1-8, a cylinder mounting plate 1-7 installed on the support frame 1-8, an upper punch cylinder 1-3 fixedly installed on the cylinder mounting plate 1-7, the punch fixedly installed on the telescopic end of the upper punch cylinder 1-3, a punch fixing frame 1-2-3 fixedly installed on the telescopic end of the upper punch cylinder 1-3, the bottom of the punch 1-2-1 passes through the punch fixing frame 1-2-3 and is fitted with a punch pressure sleeve 1-2-5, and a punch compression spring 1-2-4 is provided between the punch 1-2-1 and the punch pressure sleeve 1-2-5.

[0028] In this embodiment, by installing a support rod 1-10, inserting the punch 1-2-1 into the corresponding stepped hole of the punch holder 1-2-3, with the upper end face of the punch 1-2-1 coinciding with the upper end face of the punch holder 1-2-3, the punch holder 1-2-3 is installed at the lower end of the cylinder. A spring 1-2-4 is inserted into the lower end of the punch 1-2-1, and then the punch sleeve 1-2-5 is also inserted into the lower end of the punch 1-2-1. The rivet pin 1-2-2 passes through the oblong hole of the punch sleeve 1-2-5 and the corresponding hole of the punch 1-2-1. The upper end of the spring 1-2-4 rests against the lower end of the punch holder 1-2-3, and the lower end rests against the upper end of the punch sleeve 1-2-5. With the spring 1-2-4 installed, the punch sleeve 1-2-5 moves downward under the action of the spring 1-2-4, allowing the rivet pin 1-2-2 to engage with the upper end of the oblong hole of the sleeve 1-2-5. The contact ensures that the lower end face of the pressure sleeve 1-2-5 is lower than the lower end face of the punch 1-2-1, thus allowing the pressure sleeve 1-2-5 to contact the reaction spring first during riveting. When the pressure sleeve 1-2-5 contacts the reaction spring, it is stopped by the reaction spring. As the punch 1-2-1 continues to move downward, the spring 1-2-4 is compressed. At this time, the pressure of the pressure sleeve 1-2-5 increases, making the reaction spring fit tightly against the yoke. The punch 1-2-1 then moves downward to contact the yoke boss. During the crimping process, once the required crimping force is achieved, a signal is sent to instruct the punch 1-2-1 to return to its upper end. It is also required that the crimping stroke of the punch 1-2-1 during the crimping process must not exceed the length of the oblong hole of the pressure sleeve 1-2-5. This process ensures that the reaction spring and yoke are tightly fitted before crimping, thus preventing gaps from forming between the reaction spring and yoke after riveting. This reduces the riveting force between the reaction spring and yoke, or prevents the reaction spring from being riveted to the yoke.

[0029] As an embodiment of the present invention, the base 1-4 includes a base cover plate 1-4-1, a base bottom plate 1-4-2, and a box plate 1-4-8. The base bottom plate 1-4-2 is fixedly installed on the electric control table 2. The box plate 1-4-8, the base cover plate 1-4-1, and the base bottom plate 1-4-2 together form a box. The lower mold moving structure 1-6 is installed inside the box.

[0030] In this embodiment, the slide block 1-1-10 can be moved by installing the lower mold moving structure 1-6.

[0031] As an embodiment of the present invention, the lower mold moving structure 1-6 includes a first cylinder 1-6-3 and a positioning block 1-6-1. A second cylinder 1-6-5 is fixedly installed inside the housing. A first cylinder base 1-6-4 is fixedly installed at the telescopic end of the second cylinder 1-6-5. The first cylinder 1-6-3 is fixedly installed on the first cylinder base 1-6-4. The positioning block 1-6-1 is fixedly connected to the telescopic end of the first cylinder 1-6-3. The positioning block 1-6-1 is fixedly connected to the slide base plate 1-1-11. A strip hole is opened on the base cover plate 1-4-1, and the positioning block 1-6-1 is slidably installed in the strip hole.

[0032] In this embodiment, the upper boss of the positioning block 1-6-1 is inserted into the rectangular hole of the base cover plate 1-4-1 and fastened to the slide base plate 1-1-11 with screws. The assembled lower mold is then fastened to the slide base plate 1-1-11 with screws. The height of the upper boss of the positioning block 1-6-1 is designed to be slightly greater than the thickness of the rectangular hole in the base cover plate 1-4-1. This allows the fastened positioning block 1-6-1 to move along with the lower mold within the rectangular hole of the base. A second cylinder 1-6-5 is installed; when activated, the extension end of the second cylinder 1-6-5 can drive the first cylinder 1-6-3 and the slide base plate 1-6-11. 1-11 and slide 1-1-10 move together until they are out of the riveting position to facilitate loading and unloading, and at the same time greatly improve the safety of workers during operation. By setting two cylinders, the first cylinder 1-6-3 and the second cylinder 1-6-5, two riveting positions can be formed, so that the two bosses of the yoke can be riveted, thereby enhancing the stability of the riveting. At the same time, the two bosses of the yoke are chosen to be riveted because the space is limited during riveting and the riveting support surface is small. In order to avoid excessive riveting force during riveting and damage to the support surface, the two bosses of the yoke are riveted sequentially. If the two bosses are riveted at the same time, the large riveting force will also cause deformation of the yoke.

[0033] As an embodiment of the present invention, a coil bracket 1-1-3 is fixedly installed on the bracket 1-1-1, and a rubber pad 1-1-5 is provided on the coil bracket 1-1-3.

[0034] In this embodiment, the rubber pad 1-1-5 is provided to support the initial position of the part.

[0035] As an embodiment of the present invention, an electrical control component 3 for controlling the equipment is installed inside the electrical control table 2.

[0036] In this embodiment, an electric control table is provided for installing electric control components to control the operation of the equipment, thereby enabling automatic riveting of the reaction spring sheet.

[0037] 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.

[0038] Working principle and usage process of this invention: 1. Improve the relay reaction spring parts by punching out riveting holes.

[0039] 2. Improve the relay yoke parts by punching out the riveting boss.

[0040] 3. Design riveting fixtures and select electrical components. Assemble and debug the fixtures, write PLC control programs, assemble the electrical control components onto the production line, and finally test the entire machine.

[0041] 4. Place the coil and yoke assembly into the riveting fixture, using the coil for initial positioning. To prevent damage to the coil, place soft glue at the bottom. Close the riveting fixture, clamp the yoke, and use the lower end face of the yoke for final positioning. This will prevent damage to the coil during riveting.

[0042] 5. Place the reaction spring on the yoke, ensuring the hole in the reaction spring passes through the riveting boss. A structure is included to prevent the spring from falling off during automatic operation, and the reaction spring must be in close contact with the yoke before riveting. This prevents gaps between the reaction spring and the yoke after riveting, which would affect the riveting strength.

[0043] 6. The punch is designed in three forms: semi-circular, flat, and concave after riveting. The type of punch to use is determined by manual riveting.

[0044] 7. Press the start button, and the riveting fixture will automatically move to the first riveting station for automatic riveting, and then automatically move to the second riveting station for riveting.

[0045] 8. After riveting, the fixture automatically moves the workpiece out of the riveting area, rotates the clamping wrench, and removes the riveted part.

[0046] 9. By gradually increasing the riveting pressure, rivet the reaction springs and test the bonding force of the riveted reaction springs. The bonding force must be greater than the bonding force value specified in the process, and there should be no deformation in the appearance. At this time, record the required pressure value of the equipment and lock the pressure regulating valve.

[0047] The specific usage procedure is as follows: During the implementation of the electronic control, turn on the power switch, see... Figure 1 At this time, the second cylinder 1-6-5 is connected to the air source, pushing the lower die 1-1 of the riveting fixture to the left. The lower die 1-1 then leaves the riveting area, and the riveted part is loaded into the fixture. Pressing the start button, the second cylinder 1-6-5 pushes the lower die 1-1 of the riveting fixture to the first riveting position. After receiving the workpiece arrival signal, the upper punch cylinder 1-3 drives the upper punch 1-2 to move downwards for riveting. After receiving the riveting completion signal, the upper punch cylinder 1-3 moves upwards. After the upper punch reaches its position, a signal is issued, at which point the first cylinder 1-6-3 moves, pushing the lower die to the second riveting position. After the arrival signal is issued, the upper punch cylinder 1-3 again drives the upper punch 1-2 to move downwards for the second point riveting. After receiving the riveting completion signal, the upper punch cylinder 1-3 moves upward and sends a signal upon reaching the upper end. At this time, the first cylinder 1-6-3 returns to the first riveting position, while the second cylinder 1-6-5 pushes the lower die to the left. After removing the riveted part, the riveting process is complete. After processing is finished, pressing the reset button will cause the second cylinder 1-6-5 to push the lower die to the lower end of the upper punch, and the power will be turned off to end the work. Pressing the pause button will stop all operating mechanisms in their current positions. The pause button is mainly used for tooling adjustment and maintenance. During the test, the power switch was turned on, and the lower mold 1-1 was moved to the left. The adjusting shaft 1-1-8 was rotated to move the left limit bracket 1-1-9 and the right limit bracket 1-1-6 to their maximum positions simultaneously to the left and right. The yoke coil assembly was placed on the rubber pad 1-1-5, with the rear end face of the yoke in close contact with the yoke stop block 1-5-1. The adjusting shaft 1-1-8 was rotated again to move the left limit bracket 1-1-9 and the right limit bracket 1-1-6 towards the part. The riveting support surfaces 1-1-9-1 of the left limit bracket 1-1-9 and the right limit bracket 1-1-6 were inserted into the gap between the yoke and the coil. Figure 13 The yoke is slightly lifted, and the clamping ends 1-1-9-2 on the left limit frame 1-1-9 and right limit frame 1-1-6 firmly clamp the yoke. The rivet hole of the reaction spring is inserted into the corresponding boss of the yoke. Since the hole diameter is slightly larger than the boss diameter, to prevent the reaction spring from deflecting, the vertical end of the reaction spring should be placed in the limit plate 1-1-2. Rotate the pressure plate shaft 1-5-2 so that the pressure strip 1-5-4 presses on the reaction spring to prevent the reaction spring from falling off during movement. Press the start button, and the lower mold 1-1 automatically moves to the first riveting position. After riveting, the lower die automatically moves to the second riveting position for the second riveting. After the second riveting, the lower die 1-1 automatically moves to the left side. Rotate the pressure plate shaft 1-5-2 to make the pressure strip 1-5-4 leave the reaction spring. Rotate the adjustment shaft 1-1-8 to open the left limit frame 1-1-9 and the right limit frame 1-1-6. Take out the riveted component to complete the riveting work. Then place the second riveted part and repeat the above riveting. After the part is processed, press the reset button, and the lower die 1-1 moves to the upper punch lower 1-2 end. Turn off the switch to complete the work.

[0048] 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 reaction springs, characterized in that, The device includes a riveting fixture (1) and an electrical control table (2). The riveting fixture (1) includes an upper punch assembly (1-2), a lower die (1-1), and a base (1-4). The base (1-4) is fixedly installed on the electrical control table (2). The lower die (1-1) includes a slide (1-1-10), a bracket (1-1-1) for placing the yoke, a clamping assembly for fixing the yoke, and a limiting plate (1-1-2) for limiting the reaction spring. A slide base plate (1-1-11) is fixedly installed at the bottom of the slide (1-1-10). The slide base plate (1-1-11) is slidably installed on the electrical control table (2). On the base (1-4), the bracket (1-1-1) is fixedly installed at the center of the slide (1-1-10), the limiting plate (1-1-2) is fixedly installed on the bracket (1-1-1), and the clamping assembly includes a left limiting frame (1-1-9), a right limiting frame (1-1-6) that cooperates with the left limiting frame (1-1-9), and an anti-drop clamping structure (1-5) for preventing the reaction spring from falling and limiting the riveting position of the yoke. The left limiting frame (1-1-9) and the right limiting frame (1-1-6) are both slidably installed in the slide (1-1-10). An adjusting shaft (1-1-7) is rotatably mounted on the slide (1-1-10). A pair of matching semi-elliptical shaft core limiting grooves (1-1-6-3) are provided on the left limiting frame (1-1-9) and the right limiting frame (1-1-6). One end of the adjusting shaft (1-1-7) passes through the pair of shaft core limiting grooves (1-1-6-3) and the slide (1-1-10) to the outside of the slide (1-1-10). An elliptical adjusting shaft core (1-1-8) matching the shaft core limiting groove (1-1-6-3) is fixedly mounted on the adjusting shaft (1-1-7) located within the pair of shaft core limiting grooves (1-1-6-3).

2. The automatic riveting device for reaction springs according to claim 1, characterized in that, A pair of adjusting screws (1-1-14) are screwed onto the two side walls of the slide (1-1-10). One end of each pair of adjusting screws (1-1-14) passes through the two side walls of the slide (1-1-10) and is provided with a first spring (1-1-13). The pair of first springs (1-1-13) abut against the left limiting frame (1-1-9) and the right limiting frame (1-1-6) respectively.

3. The automatic riveting device for reaction springs according to claim 1, characterized in that, The anti-fall clamping structure (1-5) includes a pressure bar (1-5-4) and a yoke block (1-5-1). The yoke block (1-5-1) is fixedly installed on the bracket (1-1-1). The top of the yoke block (1-5-1) has a groove, and a second spring (1-5-5) is installed in the groove. A pressure pin (1-5-3) is installed in the groove above the second spring (1-5-5). A pressure shaft (1-5-6) is inserted into the yoke block (1-5-1). A pressure shaft handle (1-5-2) for fastening the pressure shaft (1-5-6) is installed on the yoke block (1-5-1). A slot (1-5-7) is opened on the pressure shaft (1-5-6) located in the groove, and the pressure bar (1-5-4) is inserted into the slot (1-5-7).

4. The automatic riveting device for reaction springs according to claim 1, characterized in that, The upper punch assembly (1-2) includes a punch (1-2-1). A pair of support frames (1-8) are fixedly installed on the base (1-4). A support rod (1-10) is fixedly installed between the pair of support frames (1-8). A cylinder mounting plate (1-7) is installed on the support frame (1-8). An upper punch cylinder (1-3) is fixedly installed on the cylinder mounting plate (1-7). The punch is fixedly installed on the telescopic end of the upper punch cylinder (1-3). A punch fixing frame (1-2-3) is fixedly installed on the telescopic end of the upper punch cylinder (1-3). The bottom of the punch (1-2-1) passes through the punch fixing frame (1-2-3) and is fitted with a punch pressure sleeve (1-2-5). A punch compression spring (1-2-4) is provided between the punch (1-2-1) and the punch pressure sleeve (1-2-5).

5. The automatic riveting device for reaction springs according to claim 1, characterized in that, The base (1-4) includes a base cover plate (1-4-1), a base bottom plate (1-4-2), and a box plate (1-4-8). The base bottom plate (1-4-2) is fixedly installed on the electric control table (2). The box plate (1-4-8), the base cover plate (1-4-1), and the base bottom plate (1-4-2) together form a box. A lower mold moving structure (1-6) is installed inside the box.

6. The automatic riveting device for reaction springs according to claim 5, characterized in that, The lower mold moving structure (1-6) includes a first cylinder (1-6-3) and a positioning block (1-6-1). A second cylinder (1-6-5) is fixedly installed inside the housing. A first cylinder base (1-6-4) is fixedly installed on the telescopic end of the second cylinder (1-6-5). A first cylinder (1-6-3) is fixedly installed on the first cylinder base (1-6-4). A positioning block (1-6-1) is fixedly connected to the telescopic end of the first cylinder (1-6-3). The positioning block (1-6-1) is fixedly connected to the slide base plate (1-1-11). A strip hole is opened on the base cover plate (1-4-1). The positioning block (1-6-1) is slidably installed in the strip hole.

7. The automatic riveting device for reaction springs according to claim 1, characterized in that, A coil bracket (1-1-3) is fixedly installed on the bracket (1-1-1), and a rubber pad (1-1-5) is provided on the coil bracket (1-1-3).

8. The automatic riveting device for reaction springs according to claim 1, characterized in that, The electrical control table (2) is equipped with an electrical control component (3) for controlling the equipment.

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