Rivet-free riveting die for oil pan

Abstract

The utility model relates to an oil pan rivet-free riveting die, and relates to the field of rivet-free riveting tools, the oil pan rivet-free riveting die comprises an upper die and a lower die, the upper die comprises an upper fixing plate and an upper die plate, the lower die comprises a lower fixing plate and a lower die plate, the upper fixing plate and the lower fixing plate are arranged in parallel, the upper die plate is fixed on the upper fixing plate, and the lower die plate is fixed on the lower fixing plate. A plurality of convex punches are arranged on the upper die plate, the lower die plate is fixed on the lower fixing plate, a plurality of concave punches are arranged on the lower die plate, and the positions of the concave punches and the positions of the convex punches are in one-to-one correspondence. The plate riveting device has the effect that rivet-free riveting can be conveniently carried out on multiple positions on the plate.

Description

Technical Field

[0001] The present application relates to the field of rivetless riveting tools, and in particular to a rivetless riveting die for an oil pan. Background Art

[0002] Rivetless joining utilizes the inherent cold deformation capacity of panels by applying pressure to them, causing localized deformation and ultimately joining them together. This method, which eliminates the need for spot welding or riveting, can connect two or more layers of panels made of different thicknesses and materials and is widely used in the automotive industry.

[0003] The related rivet-free connection process requires the use of a convex punch and a concave punch to process the plate. The concave punch is a cylindrical structure, fixed vertically, and a receiving groove is provided on the upper end face of the concave punch. The convex punch is arranged above the concave punch. The convex punch falls and abuts against the concave punch through a hydraulic cylinder. By stacking multiple plates between the convex punch and the concave punch, the convex punch falls and presses a depression on the plate, so that the depressions on the plate are clamped with each other. By processing multiple rivet points on the plate, the plates are stably connected to each other.

[0004] The above-mentioned related technical solutions have the following defects: during the riveting process of the plates, the plates need to be moved so that the concave punch and the convex punch can perform rivetless riveting at multiple positions on the plates, causing inconvenience. Utility Model Content

[0005] In order to facilitate rivetless riveting at multiple locations on a plate, the present application provides an oil pan rivetless riveting mold.

[0006] The present application provides an oil pan rivet-free riveting die that adopts the following technical solution:

[0007] A rivetless riveting die for an oil pan comprises an upper die and a lower die, the upper die comprising an upper fixed plate and an upper template, the lower die comprising a lower fixed plate and a lower template, the upper fixed plate being arranged parallel to the lower fixed plate, the upper template being fixed on the upper fixed plate, a plurality of convex punches being provided on the upper template, the lower template being fixed on the lower fixed plate, a plurality of concave punches being provided on the lower template, and the positions of the concave punches and the convex punches corresponding one to one.

[0008] By adopting the above technical solution, an upper template is set on the upper fixed plate, multiple convex punches are set on the upper template, and multiple concave punches are set on the lower template. When the hydraulic cylinder drives the upper fixed plate to move back and forth in the vertical direction, multiple convex punches can abut against the concave punches, thereby punching multiple rivet points on the plate at the same time, thereby improving work efficiency. By installing different upper templates on the upper fixed plate, users can quickly and easily replace the concave punches and convex punches in the mold, thereby facilitating rivetless riveting of plates of different sizes with different processes.

[0009] Optionally, an upper pad is provided between the upper fixing plate and the upper template, and a lower pad is provided between the lower fixing plate and the lower template.

[0010] By adopting the above technical solution, an upper pad is set between the upper fixed plate and the upper template, so that the upper pad can withstand the impact. When the upper mold and the lower mold jointly abut and squeeze the plate, stress is generated on the upper mold and the lower mold. The user can replace the deformed upper pad and lower pad, so that the upper template and the lower template maintain better dimensional accuracy.

[0011] Optionally, an upper positioning column is provided on the upper fixing plate, and a lower positioning column is provided on the lower fixing plate. The upper positioning column and the lower positioning column are coaxially arranged. When the convex punch and the concave punch abut against each other, the upper positioning column and the lower positioning column abut against each other.

[0012] By adopting the above technical solution, an upper positioning column is set on the upper fixed plate so that the upper positioning column can abut against the lower positioning column. When the upper positioning column abuts against the lower positioning column, the upper mold is difficult to continue to fall, thereby reducing the chance of the concave punch and the convex punch being subjected to greater stress and damaged.

[0013] Optionally, an upper discharge plate is slidably connected to the convex punch.

[0014] By adopting the above technical solution, an upper stripper plate is provided on the convex punch, and the upper stripper plate is slidably connected to the convex punch. When a shell that needs to be connected without rivets is set between the convex punch and the concave punch, as the upper mold falls, the upper stripper plate abuts against the shell and slides relative to the convex punch. When the processing is completed, the shell that has been riveted without rivets is easily stuck on the convex punch, and the upper stripper plate can automatically slide down and press on the shell under the action of gravity, so that the shell can fall off the convex punch, making it convenient for the user to take away the processed workpiece.

[0015] Optionally, the concave punch is slidably connected to a lower stripper plate, and a plurality of return springs are provided between the lower stripper plate and the lower template. In a natural state, the upper end of the concave punch is located in the through hole of the lower stripper plate.

[0016] By adopting the above technical solution, a lower stripper plate is arranged on the concave punch, and a reset spring is arranged between the lower stripper plate and the lower template. In a natural state, the end of the concave punch is arranged in the middle through hole of the lower stripper plate. When the user places the panel on the lower stripper plate, the lower stripper plate provides support for the panel to keep the position stable. When the upper mold moves down and abuts on the panel, the lower stripper plate can automatically move down, so that the concave punch extends from the lower stripper plate and abuts on the lower side of the panel, completing the rivet-free connection process.

[0017] Optionally, a plurality of positioning blocks are provided on the lower unloading plate, the positioning blocks are detachably connected to the lower unloading plate, and the positioning blocks are protrudingly provided on the upper surface of the lower unloading plate.

[0018] By adopting the above technical solution, a positioning block is set on the lower unloading plate so that the positioning block protrudes from the upper surface of the lower unloading plate. After a through hole is opened on the plate, the user can set the plate on the lower unloading plate. At this time, the positioning block is inserted into the through hole of the plate, which has the effect of positioning the plate. When the upper mold and the lower mold squeeze each other, the probability of horizontal slippage of the plate can be reduced, so that the concave punch and the convex punch can press out depressions at predetermined positions on the plate.

[0019] Optionally, a plurality of limiting columns are vertically arranged on the lower template, and the limiting columns pass through the lower unloading plate and are slidably connected to the lower unloading plate.

[0020] By adopting the above technical solution, by vertically arranging a limit column on the lower template, the limit column is slidably connected to the lower unloading plate. When the lower unloading plate slides vertically, the limit column clamps the lower unloading plate, reducing the chance of the lower unloading plate slipping in the horizontal direction.

[0021] Optionally, a guide column is provided between the upper mold and the lower mold, and the guide column includes an upper tube, a lower tube and a guide column spring. The upper tube is fixedly connected to the upper fixed plate, and the lower tube is fixed to the lower fixed plate. The upper tube is sleeved on the lower tube and slidably connected to the lower tube. The guide column spring is sleeved outside the lower tube, and the guide column spring is used to support the upper tube.

[0022] By adopting the above technical solution, a guide column is set between the upper mold and the lower mold, so that the upper tube and the lower tube are slidably connected, and the upper fixed plate is limited by the guide column. By arranging a guide column spring on the lower tube, the guide column spring can support the upper tube. After the upper mold and the lower mold squeeze the plate, the upper mold can be quickly reset by the guide column spring, which is convenient to use.

[0023] In summary, the beneficial technical effects of this application are:

[0024] 1. By arranging an upper template on the upper fixed plate, multiple convex punches are arranged on the upper template, and multiple concave punches are arranged on the lower template. When the hydraulic cylinder drives the upper fixed plate to move back and forth in the vertical direction, the multiple convex punches can abut against the concave punches, thereby simultaneously punching multiple rivet points on the plate, improving work efficiency. By installing different upper templates on the upper fixed plate, users can quickly and easily replace the concave and convex punches in the mold, thereby facilitating rivetless riveting of plates of different sizes and different processes;

[0025] 2. By setting an upper positioning column on the upper fixed plate, the upper positioning column can abut against the lower positioning column. When the upper positioning column abuts against the lower positioning column, the upper mold is difficult to continue to fall, thereby reducing the chance of the concave punch and the convex punch being subjected to large stress and damaged;

[0026] 3. By arranging a lower stripper plate on the concave punch and arranging a reset spring between the lower stripper plate and the lower template, in a natural state, the end of the concave punch is arranged in the middle through hole of the lower stripper plate. When the user places the panel on the lower stripper plate, the lower stripper plate provides support for the panel to keep the position stable. When the upper mold moves down and abuts on the panel, the lower stripper plate can automatically move down, so that the concave punch extends from the lower stripper plate and abuts on the lower side of the panel, completing the rivet-free connection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the present application Figure 1 .

[0028] Figure 2 This is a schematic diagram of the overall structure of the embodiment of the present application Figure 2 .

[0029] Figure 3 It is a schematic structural diagram of the concave punch of an embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the overall structure of the lower mold of an embodiment of the present application.

[0031] Figure 5 This is a schematic diagram of the installation position of the limiting column in an embodiment of the present application.

[0032] Figure numerals: 1. Upper mold; 11. Upper fixed plate; 111. Upper pad; 112. Upper positioning column; 12. Upper template; 121. Male punch; 13. Upper unloading plate; 131. Chamfer one; 2. Lower mold; 21. Lower fixed plate; 211. Lower pad; 212. Lower positioning column; 22. Lower template; 221. Female punch; 222. Accommodating groove; 223. Return spring; 23. Lower unloading plate; 231. Chamfer two; 232. Positioning block; 233. Bolt; 234. Limit column; 3. Guide column; 31. Upper side cylinder; 32. Lower side cylinder; 33. Guide column spring. DETAILED DESCRIPTION

[0033] The present application is further described in detail below with reference to the accompanying drawings.

[0034] The embodiment of the present application discloses a rivet-free riveting die for an oil pan, referring to Figure 1 and Figure 2, including an upper mold 1 and a lower mold 2, the upper mold 1 includes an upper fixed plate 11, an upper template 12 and an upper stripper plate 13, the lower mold 2 includes a lower fixed plate 21, a lower template 22 and a lower stripper plate 23, the upper fixed plate 11, the upper template 12, the lower fixed plate 21 and the lower template 22 are parallel to each other, the upper template 12 is fixed on the upper fixed plate 11, the lower template 22 is fixed on the lower fixed plate 21, a plurality of convex punches 121 are vertically fixed on the upper template 12, and a plurality of concave punches are vertically fixed on the lower template 22. Punch 221, the upper stripper plate 13 is slidably connected to the convex punch 121, the lower stripper plate 23 is slidably connected to the concave punch 221, the upper fixed plate 11 is connected to a power device, the power device can be a hydraulic cylinder, the lower fixed plate 21 is fixed to the ground, the user places the workpiece between the upper mold 1 and the lower mold 2, and the power device drives the upper mold 1 to fall, so that the convex punch 121 and the concave punch 221 jointly clamp the workpiece, and then punch out a depression on the workpiece, so that multiple plates are riveted to each other.

[0035] Reference Figure 3 The concave punch 221 is a cylindrical structure, and a receiving groove 222 is provided on the upper end surface of the concave punch 221, and a pit is provided in the receiving groove 222. When multiple plates are stacked on each other and arranged between the upper mold 1 and the lower mold 2, the convex punch 121 presses a depression on the plate that fits the shape of the receiving groove 222, and the depression of the plate sinks into the receiving groove 222, so that the depressions on multiple plates are clamped with each other, achieving the effect of riveting multiple plates without rivets.

[0036] Reference Figure 1 and Figure 2 The upper fixing plate 11 is provided with an upper pad 111, which is fixed between the upper fixing plate 11 and the upper template 12. The upper pad 111 is used to absorb the impact during pressing and reduce the probability of deformation of the upper fixing plate 11 and the upper template 12 after repeated use. The lower fixing plate 21 is provided with a lower pad 211, which is fixed between the lower fixing plate 21 and the lower template 22. The lower pad 211 is used to absorb the impact during pressing and reduce the probability of deformation of the lower fixing plate 21 and the lower template 22 after repeated use.

[0037] Reference Figure 1 and Figure 2 The upper fixing plate 11 is provided with an upper positioning post 112, and the lower fixing plate 21 is provided with a lower positioning post 212. The upper positioning post 112 and the lower positioning post 212 are coaxially arranged. When the male punch 121 and the female punch 221 abut against each other, the upper positioning post 112 and the lower positioning post 212 abut against each other. When the movement accuracy of the power device is low, the upper positioning post 112 and the lower positioning post 212 abut against each other, which can reduce the probability of excessive force on the male punch 121 and the female punch 221 and causing them to break.

[0038] Reference Figure 1 and Figure 2The upper unloading plate 13 is provided with a chamfer 131, and the lower unloading plate 23 is provided with a chamfer 231. When the upper unloading plate 13 and the lower unloading plate 23 abut against the workpiece, the workpiece can fit the chamfer 131 or the chamfer 231 and flange it, which further facilitates the user to process the workpiece.

[0039] Reference Figure 4 and Figure 5 The lower template 22 is provided with a plurality of return springs 223. The return springs 223 are perpendicular to the lower template 22. One end of the return spring 223 is fixed to the lower template 22, and the other end is fixed to the lower stripper plate 23. The concave punch 221 is set through the lower stripper plate 23. The return spring 223 is used to support the lower stripper plate 23 so that the concave punch 221 is naturally located in the through hole of the concave punch 221. When the upper mold 1 and the lower mold 2 abut against each other, the convex punch 121 abuts against the lower stripper plate 23, causing the return spring 223 to contract. At this time, the concave punch 221 extends from the through hole of the lower stripper plate 23, so that the convex punch 121 and the concave punch 221 abut against each other. The lower stripper plate 23 plays the role of supporting the plate, so that the plate can be horizontally set between the convex punch 121 and the concave punch 221, thereby improving the accuracy of the plate pressing.

[0040] Reference Figure 4 and Figure 5 The lower stripper plate 23 is provided with a plurality of positioning blocks 232, which are fixed to the upper surface of the lower stripper plate 23. After the processing of multiple panels is completed, the positioning blocks 232 are inserted into the through-holes of the panels, thereby positioning the panels. When the upper mold 1 and the lower mold 2 jointly riveted the panels, they were able to press the panels together in the predetermined position. The lower stripper plate 23 is provided with bolts 233, which are arranged horizontally. The bolts 233 are inserted into the side walls of the lower stripper plate 23 and are threadedly connected to the positioning blocks 232. The positioning blocks 232 are detachably connected to the lower stripper plate 23 via the bolts 233.

[0041] Reference Figure 4 and Figure 5 The lower discharge plate 23 is provided with a plurality of limiting posts 234, which are vertically fixed to the lower template 22 and pass through the lower discharge plate 23. The limiting posts 234 guide the lower discharge plate 23 and can reduce the probability of horizontal slippage when the lower discharge plate 23 moves.

[0042] Reference Figure 1 and Figure 2A plurality of guide posts 3 are provided between the upper mold 1 and the lower mold 2. The guide posts 3 include an upper cylinder 31, a lower cylinder 32, and a guide spring 33. The upper cylinder 31 is vertically fixed to the upper fixed plate 11, and the lower cylinder 32 is vertically fixed to the lower fixed plate 21. The upper cylinder 31 and the lower cylinder 32 are slidably connected. The guide spring 33 is sleeved on the lower cylinder 32 and is used to push the upper cylinder 31, so that the upper mold 1 and the lower mold 2 can quickly move apart after the workpiece is pressed together, thereby making it easier for the user to remove the completed workpiece and insert another workpiece to be processed.

[0043] The implementation principle of the embodiment of the present application is as follows: by arranging a convex punch 121 on the upper mold 1 and a concave punch 221 on the lower mold 2, when the convex punch 121 and the concave punch 221 abut against each other, a depression whose shape matches the accommodating groove 222 is pressed out on the plate, thereby enabling multiple plates to be connected to each other; by arranging an upper positioning column 112 on the upper fixed plate 11 and a lower positioning column 212 on the lower fixed plate 21, when the convex punch 121 and the concave punch 221 abut against each other, the upper positioning column 112 abuts against the lower positioning column 212, thereby protecting the convex punch 121 and the concave punch 221, and reducing the chance of damage to the convex punch 121 and the concave punch 221 due to excessive force.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A rivet-free riveting die for an oil pan, characterized by: The invention comprises an upper mold (1) and a lower mold (2), wherein the upper mold (1) comprises an upper fixed plate (11) and an upper mold plate (12), and the lower mold (2) comprises a lower fixed plate (21) and a lower mold plate (22), wherein the upper fixed plate (11) and the lower fixed plate (21) are arranged in parallel, the upper mold plate (12) is fixed on the upper fixed plate (11), and a plurality of convex punches (121) are arranged on the upper mold plate (12), and the lower mold plate (22) is fixed on the lower fixed plate (21), and a plurality of concave punches (221) are arranged on the lower mold plate (22), and the positions of the concave punches (221) and the convex punches (121) correspond to each other.

2. The rivetless riveting die for an oil pan according to claim 1, characterized in that: An upper pad (111) is provided between the upper fixing plate (11) and the upper template (12), and a lower pad (211) is provided between the lower fixing plate (21) and the lower template (22).

3. The rivetless riveting die for an oil pan according to claim 1, characterized in that: An upper positioning column (112) is provided on the upper fixing plate (11), and a lower positioning column (212) is provided on the lower fixing plate (21). The upper positioning column (112) and the lower positioning column (212) are coaxially arranged. When the convex punch (121) and the concave punch (221) abut against each other, the upper positioning column (112) and the lower positioning column (212) abut against each other.

4. The rivetless riveting die for an oil pan according to claim 1, characterized in that: An upper discharge plate (13) is slidably connected to the convex punch (121).

5. The rivetless riveting die for an oil pan according to claim 1, characterized in that: The concave punch (221) is slidably connected to a lower stripper plate (23), and a plurality of return springs (223) are provided between the lower stripper plate (23) and the lower template (22). In a natural state, the upper end of the concave punch (221) is located in the through hole of the lower stripper plate (23).

6. The rivetless riveting die for an oil pan according to claim 5, characterized in that: A plurality of positioning blocks (232) are provided on the lower discharge plate (23), and the positioning blocks (232) are detachably connected to the lower discharge plate (23), and the positioning blocks (232) are protrudingly provided on the upper surface of the lower discharge plate (23).

7. The rivetless riveting die for an oil pan according to claim 6, characterized in that: A plurality of limiting columns (234) are vertically arranged on the lower template (22), and the limiting columns (234) pass through the lower discharge plate (23) and are slidably connected to the lower discharge plate (23).

8. The rivetless riveting die for an oil pan according to claim 1, characterized in that: A guide column (3) is provided between the upper mold (1) and the lower mold (2). The guide column (3) comprises an upper cylinder (31), a lower cylinder (32) and a guide column spring (33). The upper cylinder (31) is fixedly connected to the upper fixed plate (11), and the lower cylinder (32) is fixed to the lower fixed plate (21). The upper cylinder (31) is sleeved on the lower cylinder (32) and is slidably connected to the lower cylinder (32). The guide column spring (33) is sleeved outside the lower cylinder (32). The guide column spring (33) is used to support the upper cylinder (31).

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