Sheet metal part punch forming die

Abstract

The utility model discloses a stamping forming die for sheet metal parts, which is based on a punch press and comprises an upper die and a lower die, the upper die is fixedly positioned at the bottom of a punch slider of the punch press, and the lower die is fixedly positioned at the top of a worktable of the punch press. Through the arrangement of the two groups of first limiting blocks and second limiting blocks of the lower die, the effects of limiting the rear side of a metal plate and preventing the metal plate from deviating can be achieved; through the arrangement of a sliding block, a guide rod and a spring, the effects that during downward pressing, a first limiting block and a second limiting block are pressed downwards and slide downwards, the spring is compressed, after stamping is completed, an upper die ascends, the spring rebounds, and the first limiting block and the second limiting block are driven to reset can be achieved; and through the arrangement of the spring plunger, the effect that after the hoop is formed, the spring plunger rebounds to jack up the hoop, and an operator can conveniently take out the hoop can be achieved.

Description

Technical Field

[0001] This utility model relates to sheet metal stamping technology, and in particular to a sheet metal stamping forming die. Background Technology

[0002] Sheet metal stamping is a process that uses a large amount of force to change the shape of a flat metal sheet. In the production of clamps, sheet metal stamping is also used to shape a flat metal sheet into an "Ω" shape.

[0003] However, current clamp stamping processes involve placing the cut sheet metal directly onto the top of the lower die, followed by pressing down with the upper die to form the clamp. The pass rate is based on the operator's accuracy in manually placing the sheet metal. If the operator places the sheet metal incorrectly, the stamped clamp will be tilted and thus defective. Furthermore, since the sheet metal is already formed, it cannot be reused and must be recycled as scrap, resulting in wasted time and materials and increased costs. Utility Model Content

[0004] The purpose of this utility model is to provide a sheet metal stamping die that has the advantage of limiting the sheet metal part without hindering the forming of the clamp.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A sheet metal stamping die, based on a punch press, includes an upper die and a lower die. The upper die is fixedly located at the bottom of the punch slide of the punch press, and the lower die is fixedly located at the top of the worktable of the punch press. The lower die is a square block. An arc-shaped opening is provided on the front side of the lower die. The left and right sides of the top of the lower die are provided with first square through holes arranged longitudinally. The left and right sides of the top of the lower die are provided with second square through holes arranged horizontally. Each second square through hole is connected to its corresponding first square through hole. Each second square through hole is located on the side of its corresponding first square through hole close to the arc-shaped opening.

[0007] The lower mold has a third-shaped perforation on the left and right sides of the front side, and the position of the third-shaped perforation corresponds to the position of the first square perforation.

[0008] A first limiting block is slidably inserted into each of the first square through holes, and a second limiting block is slidably inserted into each of the second square through holes. Each second limiting block is fixedly connected to its corresponding first limiting block.

[0009] Each of the first limiting blocks is fixedly provided with a slider on its front and rear sides. Each slider is slidably located in its corresponding three-dimensional through hole. Each three-dimensional through hole is fixedly provided with a vertical guide rod on its front and rear sides. Each guide rod is fitted with a spring. Each slider is slidably inserted into the upper end of its corresponding guide rod. The top of each spring abuts against the bottom of its corresponding slider.

[0010] The height of each of the first and second limiting blocks is one-quarter of the height of the lower mold, and the top of the first and second limiting blocks is 2cm higher than the top of the lower mold.

[0011] The upper mold is a square block, and a fan-shaped block with a central angle of 180° is fixed at the bottom of the upper mold. The fan-shaped block corresponds to the arc-shaped opening.

[0012] The preferred solution is as follows:

[0013] Preferably, each of the four corners of the front side of the slider is provided with a first circular through hole, each of the first circular through holes is provided with a first bolt, and each of the front and rear sides of the first limiting block is provided with a first threaded hole corresponding to the first circular through hole, and each of the first bolts is threadedly connected to the corresponding first threaded hole.

[0014] Preferably, a spring plunger is fixedly installed on the bottom wall inside the arc-shaped opening of the lower mold.

[0015] Preferably, the lower mold has a second circular through hole on the top left and right front and rear sides, and each second circular through hole corresponds to the position of its corresponding guide rod.

[0016] Each of the second circular through holes has an internal thread at its lower end, each of the guide rods has a thread at its lower end, and each of the guide rods is threadedly connected to the lower end of its corresponding second circular through hole.

[0017] Each of the guide rods has a transverse groove at its top.

[0018] In summary, this utility model has the following beneficial effects:

[0019] 1. By setting the two sets of first and second limit blocks in the lower mold, the rear side of the sheet metal can be limited to prevent the sheet metal from shifting.

[0020] 2. By using sliders, guide rods, and springs, the first and second limit blocks are pressed down and the springs are compressed during the pressing process. After the stamping is completed, the upper die rises, the springs rebound, and the first and second limit blocks are reset.

[0021] 3. The spring plunger design allows the clamp to rebound after molding, lifting it up and making it easier for operators to remove. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structural design of the embodiment;

[0023] Figure 2 This is a schematic diagram of the overall structural design of the upper and lower molds in the embodiment;

[0024] Figure 3 This is an exploded view of the lower mold in the embodiment.

[0025] In the diagram, 1 is a punch press; 2 is an upper die; 3 is a lower die; 211 is a sector block; 311 is an arc-shaped opening; 312 is a first square through hole; 313 is a second square through hole; 314 is a third square through hole; 315 is a first limiting block; 316 is a second limiting block; 317 is a slider; 318 is a guide rod; 319 is a spring; 320 is a first bolt; and 321 is a spring plunger. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings.

[0028] A sheet metal stamping die, such as Figures 1-3 As shown, based on the punch press 1, it includes an upper die 2 and a lower die 3. The upper die 2 is fixedly located at the bottom of the punch slide of the punch press 1, and the lower die 3 is fixedly located at the top of the worktable of the punch press 1.

[0029] The lower mold 3 is a square block. The front side of the lower mold 3 has an arc-shaped opening 311. The top left and right sides of the lower mold 3 have vertically arranged first square through holes 312. The top left and right sides of the lower mold 3 have horizontally arranged second square through holes 313. Each second square through hole 313 is connected to its corresponding first square through hole 312. Each second square through hole 313 is located on the side of its corresponding first square through hole 312 near the arc-shaped opening 311. The left and right sides of the front side of the lower mold 3 have third square through holes 314. The position of the third square through hole 314 corresponds to the position of the first square through hole 312.

[0030] A first limiting block 315 is slidably inserted into each first square through hole 312, and a second limiting block 316 is slidably inserted into each second square through hole 313. Each second limiting block 316 is fixedly connected to its corresponding first limiting block 315. Each second limiting block 316 and its corresponding first limiting block 315 are integrally formed. The cross-section of each second limiting block 316 and its corresponding first limiting block 315 is "L" shaped.

[0031] Each third-dimensional perforation 314 has a vertically oriented guide rod 318 fixedly installed on its front and rear sides. Each guide rod 318 is fitted with a spring 319. Each first limiting block 315 has a slider 317 fixedly installed on its front and rear sides. Each slider 317 has a third circular perforation at its top. Each slider 317 slides within its corresponding third-dimensional perforation 314 and is slidably inserted into the upper end of its corresponding guide rod 318. The top of each spring 319 abuts against the bottom of its corresponding slider 317. Each slider 317 has a first circular perforation at its four corners on its front side. Each first circular perforation contains a first bolt 320. Each first limiting block 315 has a first threaded hole corresponding to its corresponding first circular perforation on its front and rear sides. Each first bolt 320 is threadedly connected to its corresponding first threaded hole. The first bolts 320 are used for fixing, which facilitates the disassembly and installation of the slider 317.

[0032] When the slider 317 is located at the top inside the third-dimensional perforation 314, the spring 319 is in a slightly compressed state. That is, in order to maintain the lifting height of the first limit block 315 and the second limit block 316, the spring 319 is always in a compressed state.

[0033] In order to facilitate the sliding of the first limiting block 315 and the second limiting block 316, the height of each first limiting block 315 and the second limiting block 316 is one-quarter of the height of the lower mold 3. The top of the first limiting block 315 and the second limiting block 316 is 2cm higher than the top of the lower mold 3, and the part that is 2cm higher than the lower mold 3 is used to limit the sheet metal.

[0034] To facilitate fixing the guide rod 318, second circular through holes are respectively opened on the front and rear sides of the top left and right sides of the lower mold 3, and each second circular through hole corresponds to the position of its corresponding guide rod 318.

[0035] Each second circular through hole has an internal thread at its lower end, each guide rod 318 has a thread at its lower end, and each guide rod 318 is threaded to the lower end of its corresponding second circular through hole.

[0036] Each guide rod 318 has a horizontal groove at its top. Insert the guide rod 318 into its corresponding second circular through hole, and rotate the guide rod 318 with a screwdriver to make the guide rod 318 threadedly connected to the lower end of the second circular through hole, thus completing the fixation of the guide rod 318.

[0037] A spring plunger 321 is fixedly installed on the bottom wall of the arc-shaped opening 311 of the lower mold 3. When pressed down, the spring plunger 321 is pressed down, and after the pressing force is removed, the spring plunger 321 rebounds and pushes out the formed clamp.

[0038] The upper mold 2 is a square block. A fan-shaped block 211 with a central angle of 180° is fixed at the bottom of the upper mold 2. The fan-shaped block 211 corresponds to the arc-shaped opening 311. The clamping is completed by pressing down through the cooperation of the fan-shaped block 211 and the arc-shaped opening 311.

[0039] The fixing of the upper mold 2 and the lower mold 3 are both existing technologies, which are fixed to the punch press 1 by the second bolt and nut, and will not be described in detail here.

[0040] Detailed installation process:

[0041] Step 1: Place the spring 319 and the slider 317 into their respective third-dimensional through holes 314. Since the spring 319 is in a compressed state, at this time, the spring 319 presses the slider 317 against the inner top wall of the third-dimensional through hole 314.

[0042] Step 2: Insert the guide rod 318 from the top of the lower mold 3 through the second circular through hole. The guide rod 318 passes through the second circular through hole, the slider 317, and the spring 319 in sequence. The lower end of the guide rod 318 abuts against the threaded part at the lower end of the second circular through hole. Rotate the guide rod 318 to make it threadedly connected to the threaded part at the lower end of the second circular through hole to complete the limiting and fixing of the slider 317.

[0043] Step 3: Insert the first limiting block 315 and the second limiting block 316 into their corresponding first square through hole 312 and second square through hole 313 respectively. The operator inserts a screwdriver through the bottom of the first square through hole 312 to hold the bottom of the first limiting block 315 to prevent it from falling off. At the same time, insert the first bolt 320 into the first circular through hole of the slider 317 and thread it into its corresponding threaded hole to complete the fixing of the first limiting block 315 and the second limiting block 316.

[0044] Step 4: Thread the spring plunger 321 to the inner bottom wall of the arc-shaped opening 311;

[0045] Step 5: Fix the upper die 2 and lower die 3 to the punch press 1.

[0046] Specific work process:

[0047] Step 1: Place the cut sheet metal on the top of the lower mold 3. The left side of the rear part of the sheet metal abuts against the angle formed by the first limiting block 315 and the second limiting block 316 located on the left side, and the right side of the rear part of the sheet metal abuts against the angle formed by the first limiting block 315 and the second limiting block 316 located on the right side.

[0048] Step 2: The punch press 1 drives the upper die 2 to descend. The upper die 2 abuts against the top of the sheet metal. As the upper die 2 descends, the sheet metal is continuously deformed. At the same time, the spring plunger 321 is compressed.

[0049] Step 3: As the upper mold 2 continues to press down, the left and right sides of the fan-shaped block 211 of the upper mold 2 abut against the tops of the corresponding first limiting block 315 and second limiting block 316 respectively. The upper mold 2 continues to press down, the spring 319 is compressed, and the first limiting block 315 and second limiting block are squeezed into the lower mold 3. At this time, the side of the clamp is formed.

[0050] Step 4: The upper mold 2 rises, the spring plunger 321 and the four springs 319 all rebound, the first limit block 315 and the second limit block 316 rise; the formed clamp is lifted by the spring plunger 321.

[0051] Step 5: The operator removes the clamp.

[0052] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A sheet metal stamping die, based on a punch press (1), comprising an upper die (2) and a lower die (3), wherein the upper die (2) is fixedly located at the bottom of the punch slide of the punch press (1), and the lower die (3) is fixedly located at the top of the worktable of the punch press (1), characterized in that: The lower mold (3) is a square block. The front part of the lower mold (3) has an arc-shaped opening (311). The top left and right sides of the lower mold (3) are provided with a first square through hole (312) arranged vertically. The top left and right rear sides of the lower mold (3) are provided with a second square through hole (313) placed horizontally. Each second square through hole (313) is connected to its corresponding first square through hole (312). Each second square through hole (313) is located on the side of its corresponding first square through hole (312) close to the arc-shaped opening (311). The lower mold (3) has a third-shaped perforation (314) on the left and right sides of the front side, and the position of the third-shaped perforation (314) corresponds to the position of the first square perforation (312); A first limiting block (315) is slidably inserted into each of the first square through holes (312), and a second limiting block (316) is slidably inserted into each of the second square through holes (313). Each second limiting block (316) is fixedly connected to its corresponding first limiting block (315). Each of the first limiting blocks (315) has a slider (317) fixedly provided on its front and rear sides. Each slider (317) is slidably located in its corresponding third-dimensional through hole (314). Each third-dimensional through hole (314) has a vertical guide rod (318) fixedly provided on its front and rear sides. Each guide rod (318) is fitted with a spring (319). Each slider (317) is slidably inserted into the upper end of its corresponding guide rod (318). The top of each spring (319) abuts against the bottom of its corresponding slider (317). The height of each of the first limiting block (315) and the second limiting block (316) is one-quarter of the height of the lower mold (3), and the top of the first limiting block (315) and the second limiting block (316) is 2cm higher than the top of the lower mold. The upper mold (2) is a square block, and a fan-shaped block (211) with a central angle of 180° is fixedly provided at the bottom of the upper mold (2). The fan-shaped block (211) corresponds to the arc-shaped opening (311).

2. The sheet metal stamping die according to claim 1, characterized in that: Each slider (317) has a first circular through hole at the four corners of its front side, and a first bolt (320) is provided in each of the first circular through holes. Each first limiting block (315) has a first threaded hole corresponding to its corresponding first circular through hole on its front and rear sides, and each first bolt (320) is threadedly connected to its corresponding first threaded hole.

3. The sheet metal stamping die according to claim 1, characterized in that: A spring plunger (321) is fixedly installed on the bottom wall of the arc-shaped opening of the lower mold (3).

4. The sheet metal stamping die according to claim 1, characterized in that: The lower mold (3) has a second circular through hole on the front and rear sides of the top left and right sides respectively, and each second circular through hole corresponds to the position of its corresponding guide rod (318). Each of the second circular through holes has an internal thread at its lower end, and each of the guide rods (318) has a thread at its lower end. Each of the guide rods (318) is threaded to the lower end of its corresponding second circular through hole. Each of the guide rods (318) has a transverse groove at its top.

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