Automatic riveting machine

Abstract

The utility model provides an automatic riveting machine which comprises an electric press machine, a lower die base is arranged on a bottom plate of the electric press machine, a lower die plate is arranged on the upper end face of the lower die base, an upper die assembly is arranged above the lower die plate in a sliding mode through a guide column, and the upper die assembly comprises an upper die plate and an upper die base arranged on the top of the upper die plate. A die handle is fixedly arranged in the center of the upper end face of the upper die base and connected with a sliding rod of the electric press. A stamping block is arranged on the lower end face of the upper die plate, and the lower end face of the stamping block is a plane. A fixing mechanism is arranged on the upper end face of the lower die plate and comprises a supporting seat and a profiling fixing seat, the supporting seat is arranged on the lower die plate, the profiling fixing seat is arranged on the supporting seat and extends forwards out of the supporting seat, the top of the profiling fixing seat is flush with the top of the supporting seat, and the bottom of the profiling fixing seat is close to but not close to the lower die plate. The automatic riveting machine is used for riveting butt joint faces of shielding cases, the riveting effect is enhanced, and the butt joint positions are smooth.

Description

Technical Field

[0001] This utility model relates to the field of shielding shell processing technology, and in particular to an automatic riveting machine. Background Technology

[0002] The shielding shell is a key component of the battery assembly. It not only provides structural support and protection but also reduces electromagnetic interference, ensures stable communication signals, improves equipment performance and stability, extends battery life, and delivers an excellent user experience. Currently, one particular shielding shell has a rounded cuboid shape with open ends. One of its wider sides is the mating surface, which features a raised-and-recessed joint. Although the raised and recessed joints on the mating surface have been smoothed during the stamping process, unevenness still exists. Therefore, after manufacturing, the mating surface needs to be stamped again to strengthen the joint and ensure a smooth finish. Utility Model Content

[0003] This utility model provides an automatic riveting machine for riveting the mating surfaces of shielding shells.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An automatic riveting machine includes an electric press. A lower die base is mounted on the base plate of the electric press. A lower template is mounted on the upper surface of the lower die base. An upper die assembly is slidably mounted above the lower template via guide posts. The upper die assembly includes an upper template and an upper die base mounted on top of the upper template. A die handle is fixedly mounted at the center of the upper surface of the upper die base and is connected to a slide rod of the electric press. A stamping block is mounted on the lower surface of the upper template, and the lower surface of the stamping block is flat. A fixing mechanism is mounted on the upper surface of the lower template. The fixing mechanism includes a support base and a contour fixing base. The support base is mounted on the lower template, and the contour fixing base is mounted on the support base and extends forward from the support base. The top of the contour fixing base is flush with the top of the support base, and its bottom is close to but not touching the lower template.

[0006] Preferably, the upper template has a positioning groove that runs through its upper and lower ends. Two positioning pressure plates are installed on the lower end of the upper template located on the front and rear sides of the positioning groove by bolts. The front and rear sides of the stamping block are provided with limiting grooves, and the limiting grooves are adapted to match the adjacent positioning pressure plates. The stamping block is fixed in the positioning groove by the positioning pressure plates on both sides.

[0007] Preferably, the support base is a convex structure with two mounting parts. The lower end face of the lower template has a convex blind area, and the middle part of the convex blind area penetrates the top surface of the lower template. The support base is set in the convex blind area of ​​the lower template, and its middle part extends out of the top of the lower template. Bolts pass from the top of the lower template to the mounting part of the support base to achieve locking.

[0008] Preferably, the device also includes a discharge mechanism. The support base of the fixing mechanism has two push-through holes extending through its front and rear sides. The contoured fixing base has C-shaped through slots on both sides corresponding to the push-through holes. The discharge mechanism includes a dual-axis cylinder and two push rods. The dual-axis cylinder is mounted on the rear side of the base plate of the electric press via a pad. The front push plate of the dual-axis cylinder is provided with a fixing plate. The two push rods are mounted on the front end of the fixing plate, and their front ends are movably mounted in the push-through holes of the support base.

[0009] Preferably, a receiving box is also included, which is movably placed on the front side of the electric press.

[0010] Preferably, a feeding mechanism is also included, which is located on the same platform as the electric press. The feeding mechanism includes a slide cylinder, a finger cylinder, and two clamping plates. The slide cylinder is arranged in front of the automatic press, and an L-shaped bracket is arranged at one end of the slide cylinder near the automatic press. A horizontal plate is provided on the side of the L-shaped bracket near the automatic press. The finger cylinder is arranged at the bottom of the horizontal plate, and the two clamping plates are symmetrically arranged on the outside of the two grippers of the finger cylinder. A support plate is provided below the two clamping plates.

[0011] Preferably, the pallet has a high horizontal surface and a low horizontal surface that are connected to each other. The low horizontal surface of the pallet is fixed below the horizontal plate by a vertical arm, and the high horizontal surface of the pallet is located below the two clamping plates and is movably close to the bottom surface of the two clamping plates.

[0012] Preferably, a quick positioning area is formed by an inward recess in the middle of the high horizontal surface of the tray located between the two clamps, and a clearance groove is provided in the quick positioning area along its length.

[0013] The beneficial effects of this utility model are as follows: This automatic riveting machine is used to rivet the mating surfaces of shield shells, enhance the riveting effect, and make the mating joint flat; through the arrangement of the feeding mechanism and the discharging mechanism, after one loading, the machine automatically feeds, rivets, and discharges the material, with a relatively high degree of automation, which improves work efficiency and reduces the workload of operators. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2This is a cross-sectional view of the structure of this utility model after the electric press has been removed.

[0016] Figure 3 This is a schematic diagram of the material discharge mechanism.

[0017] Figure 4 This is a schematic diagram of the structure of the preferred embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the feeding mechanism.

[0019] In the diagram: 1. Electric press; 2. Lower die base; 3. Lower template; 4. Upper template; 5. Upper die base; 6. Die handle; 7. Stamping block; 8. Support base; 9. Contouring fixing base; 10. Guide post; 11. Blind hole; 12. Positioning pressure plate; 13. Limiting groove; 14. Pushing through hole; 15. C-shaped through groove; 16. Dual-axis cylinder; 17. Push rod; 18. Receiving box; 19. Slide cylinder; 20. Finger cylinder; 21. Clamping plate; 22. L-shaped bracket; 23. Horizontal plate; 24. Support plate; 25. Vertical arm; 26. Quick positioning area; 27. Clearance through groove; 71. Clearance groove; 81. Mounting part. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figure 1-3 As shown, the automatic riveting machine of this utility model includes an electric press 1. A lower die base 2 is provided on the base plate of the electric press 1. A lower template 3 is provided on the upper end face of the lower die base 2. An upper die assembly is slidably provided above the lower template 3 via a guide post 10. The upper die assembly has a blind hole 11 for the guide post 10 to be inserted. The upper die assembly includes an upper template 4 and an upper die base 5 provided on the top of the upper template 4. A die handle 6 is fixedly provided at the center of the upper end face of the upper die base 5. The die handle 6 is connected to the slide rod of the electric press. A stamping block 7 is provided on the lower end face of the upper template 5. The lower end face of the stamping block 7 is flat. A fixing mechanism is provided on the upper end face of the lower template 3. The fixing mechanism includes a support base 8 and a contour fixing base 9. The support base 9 is provided on the lower template 3. The contour fixing base 9 is provided on the support base 3 and extends forward from the support base 3. The top of the contour fixing base 9 is flush with the top of the support base 8, and its bottom is close to but not touching the lower template 3.

[0022] In this embodiment, the shielding shell is a rounded cuboid structure with openings at both ends, and its top and bottom surfaces each have a pair of outward-facing locking assemblies. The top surface of the shielding shell is the mating surface, which is formed by stamping and riveting two interlocking concave and convex end faces. Because the mating surface may be uneven after riveting at the concave and convex openings, it is further riveted by stamping again to make it flat and ensure that the flatness meets the requirements.

[0023] To accommodate the protruding key assembly on the top surface of the shielding shell, a clearance groove 71 is provided on the rear side of the lower end face of the stamping block 7. The conformal fixing seat is adapted to the structure of the shielding shell, and the shielding shell can be fitted onto the conformal fixing seat and remains relatively stable without falling off.

[0024] Among them, the electric press is an existing technology product, also known as an electric CNC press or a CNC electric stepper press. It is driven by a stepper cylinder and can adjust the pressing distance and pressing pressure. The stepper cylinder moves the slide bar up and down, which in turn moves the upper die assembly up and down.

[0025] In use, the shielding shell is fitted into the contour fixing base, ensuring that its mating surface is at the top of the contour fixing base. When the electric press is working, its sliding rod drives the upper mold base and upper template to move downwards, and the stamping block descends accordingly, stamping the mating surface of the shielding shell to further rivet the interlocking concave and convex openings, increasing the flatness of the entire mating surface.

[0026] In this embodiment, the stamping block is fixed to the upper template as follows. The upper template 4 has a positioning groove penetrating its upper and lower end faces. Two positioning pressure plates 12 are bolted to the lower end faces of the upper template located on the front and rear sides of the positioning groove. Limiting grooves 13 are formed on the front and rear sides of the stamping block 7, and these limiting grooves 13 are adaptively matched with their adjacent positioning pressure plates 12. The stamping block 7 is fixed in the positioning groove by the positioning pressure plates 12 on both sides. This design allows for replacement after the lower end face of the stamping block wears down. The positioning pressure plates can be removed by unscrewing the bolts, and then the stamping block can be pulled down for replacement.

[0027] The support base is arranged on the lower template in this way. The support base 8 is a convex structure with two mounting parts 81. The lower end face of the lower template 3 has a convex blind area, and the middle part of the convex blind area penetrates the top surface of the lower template. The support base 8 is set in the convex blind area of ​​the lower template, and its middle part extends out of the top of the lower template. Bolts pass from the top of the lower template to the mounting part 81 of the support base to achieve locking.

[0028] Furthermore, to facilitate unloading, a discharge mechanism is also included. The support base 8 of the fixing mechanism has two through-holes 14 extending through its front and rear sides. The contoured fixing base 9 has C-shaped grooves 15 on both sides corresponding to the through-holes 14. The discharge mechanism includes a dual-axis cylinder 16 and two push rods 17. The dual-axis cylinder 16 is mounted on the rear side of the base plate of the electric press 1 via a pad. A fixing plate is mounted on the front push plate of the dual-axis cylinder 16. The two push rods 17 are mounted on the front end of the fixing plate, and their front ends are movably positioned within the through-holes 14 of the support base 8. Since the shielding shell is a rounded cuboid structure with open ends, its left and right sides are vertical, while its top and bottom surfaces are horizontal. The connection between the left and right sides and the top and bottom surfaces is a transitional arc surface. Therefore, the left and right sides of the shielding shell intersect with the push rods. After stamping is completed, the dual-axis cylinder is activated, controlling the two push rods to extend. The push rods press against the rear ends of the front and rear sides of the shielding shell, pushing the shielding shell outward for unloading.

[0029] Preferably, a receiving box 18 is also included, which is movably positioned at the front of the electric press. The action of the dual-axis cylinder causes the push rod to extend out of the push-out hole and move forward along the C-shaped through groove of the contour fixing seat, causing the shielding shell to disengage from the contour fixing seat and fall into the front receiving box in a parabolic trajectory.

[0030] In the preferred embodiment, to improve automation efficiency and ensure safety, a feeding mechanism is also included. This feeding mechanism is on the same platform as the electric press. The feeding mechanism includes a slide cylinder 19, a finger cylinder 20, and two clamping plates 21. The slide cylinder 19 is arranged in front of the automatic press 1. An L-shaped bracket 22 is arranged at one end of the slide cylinder 19 near the automatic press 1. A horizontal plate 23 is provided on the side of the L-shaped bracket 22 near the automatic press 1. The finger cylinder 20 is arranged at the bottom of the horizontal plate 23. The two clamping plates 21 are symmetrically arranged on the outer sides of the two grippers of the finger cylinder 20. A support plate 24 is provided below the two clamping plates 21. Adaptor plates 28 that match the left and right sides of the shielding shell are detachably provided on the opposite inner sides of the two clamping plates.

[0031] In use, place the shielding shell on the tray, ensuring its mating surface is on top. Press the start button. The finger cylinder activates, controlling the two grippers to move closer together, which in turn moves the two clamping plates closer together to clamp the left and right sides of the shielding shell. Then, the slide cylinder activates, moving the finger cylinder towards the fixing mechanism until the shielding shell fits into the contour fixing seat and stops. The finger cylinder then controls the two grippers to move away from each other, releasing the shielding shell. The slide cylinder moves the finger cylinder back. Simultaneously, the electric press activates, and the slide rod moves the upper die assembly accordingly, causing the stamping block to press down and rivet the mating surface of the shielding shell, making the mating surface flat. The slide rod moves the upper die assembly back, and the dual-axis cylinder activates, controlling the two push rods to extend and move forward along the C-shaped through groove of the contour fixing seat, causing the shielding shell to detach from the contour fixing seat and fall into the front receiving box in a parabolic trajectory. At the same time, the dual-axis cylinder moves the push rod back. This completes all actions, and the machine awaits the next start command.

[0032] In this embodiment, the sequential actions of the finger cylinder, slide cylinder, electric press, and dual-axis cylinder are achieved through the cooperation of time delay relays, intermediate relays, and cylinder solenoid valves. This process is common knowledge in the industry and will not be described in detail.

[0033] The pallet 24 has a high horizontal surface and a low horizontal surface connected together. The low horizontal surface of the pallet 24 is fixed below the horizontal plate 23 by the vertical arm 25, and the low horizontal surface of the push plate is located below the finger cylinder. The high horizontal surface of the pallet 24 is located below the two clamping plates 21 and is movably close to the bottom surface of the two clamping plates.

[0034] Furthermore, a quick positioning area 26 is formed by an inward recess in the middle of the high horizontal surface of the support plate 24 located between the two clamping plates, which facilitates the quick placement of the shielding shell; the quick positioning area 26 is provided with a clearance groove 27 along its length direction, which makes way for the key group protruding from the low surface of the shielding shell.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic riveting machine, comprising an electric press, wherein a lower die base is provided on the base plate of the electric press, a lower template is provided on the upper end face of the lower die base, an upper die assembly is slidably arranged above the lower template via guide posts, the upper die assembly includes an upper template and an upper die base disposed on top of the upper template, a die handle is fixedly disposed at the center position of the upper end face of the upper die base, and the die handle is connected to a slide rod of the electric press; characterized in that: The lower end face of the upper template is provided with a stamping block, and the lower end face of the stamping block is a plane; the upper end face of the lower template is provided with a fixing mechanism, the fixing mechanism includes a support base and a contour fixing base, the support base is provided on the lower template, the contour fixing base is provided on the support base and extends forward from the support base, the top of the contour fixing base is flush with the top of the support base, and its bottom is close to but not close to the lower template.

2. The automatic riveting machine according to claim 1, characterized in that: The upper template has a positioning groove that runs through its upper and lower ends. Two positioning pressure plates are installed on the lower end of the upper template located on the front and rear sides of the positioning groove by bolts. The front and rear sides of the stamping block are provided with limiting grooves, and the limiting grooves are adapted to match the adjacent positioning pressure plates. The stamping block is fixed in the positioning groove by the positioning pressure plates on both sides.

3. An automatic riveting machine according to claim 1, characterized in that: The support base is a convex structure with two mounting parts. The lower end face of the lower template has a convex blind area, and the middle part of the convex blind area penetrates the top surface of the lower template. The support base is set in the convex blind area of ​​the lower template, and its middle part extends out of the top of the lower template. Bolts pass from the top of the lower template to the mounting part of the support base to achieve locking.

4. An automatic riveting machine according to claim 1, characterized in that: It also includes a discharge mechanism. The support base of the fixed mechanism has two push-through holes that extend through its front and rear sides. The contoured fixed base has C-shaped through slots on both sides that correspond to the push-through holes. The discharge mechanism includes a dual-axis cylinder and two push rods. The dual-axis cylinder is mounted on the rear side of the base plate of the electric press through a pad. The front push plate of the dual-axis cylinder is equipped with a fixed plate. The two push rods are mounted on the front end of the fixed plate, and the front ends of the push rods are movably mounted in the push-through holes of the support base.

5. An automatic riveting machine according to claim 1, characterized in that: It also includes a receiving box, which is movably placed on the front side of the electric press.

6. An automatic riveting machine according to claim 1, characterized in that: It also includes a feeding mechanism, which is on the same platform as the electric press. The feeding mechanism includes a slide cylinder, a finger cylinder, and two clamping plates. The slide cylinder is arranged in front of the automatic press. An L-shaped bracket is arranged at the end of the slide cylinder near the automatic press. A horizontal plate is arranged on the side of the L-shaped bracket near the automatic press. The finger cylinder is arranged at the bottom of the horizontal plate. The two clamping plates are symmetrically arranged on the outside of the two grippers of the finger cylinder. A support plate is arranged below the two clamping plates.

7. An automatic riveting machine according to claim 6, characterized in that: The pallet has a high horizontal surface and a low horizontal surface that are connected to each other. The low horizontal surface of the pallet is fixed below the horizontal plate by a vertical arm, and the high horizontal surface of the pallet is located below the two clamping plates and moves close to the bottom surface of the two clamping plates.

8. An automatic riveting machine according to claim 7, characterized in that: A quick positioning area is formed by an inward recess in the middle of the high horizontal surface of the pallet located between the two clamping plates, and a clearance groove is provided in the quick positioning area along its length.

Images