A riveting machine die with stripping function

Abstract

The utility model relates to the technical field of flanging hole molds for riveting machines, and specifically to a riveting machine mold with a stripping function, including a first mold body and a second mold body located below the first mold body, the first mold body including a drawing punch, a fixed plate, a stripping plate and a connecting assembly, the fixed plate is arranged above the stripping plate, the upper end of the connecting assembly is slidably connected to the fixed plate, the lower end of the connecting assembly is fixedly connected to the stripping plate, the upper end of the drawing punch is fixedly connected to the fixed plate, the lower end of the drawing punch protrudes from the stripping plate and is slidably connected to the stripping plate, the drawing punch sleeve is provided with a stripping spring, the stripping spring is located between the fixed plate and the stripping plate, and the second mold body is provided with a forming groove that cooperates with the drawing punch. The riveting machine mold is easy to use, and can prevent the product from getting stuck in the drawing punch after the flanging is completed, and has strong practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of flanging hole dies for a riveting machine, in particular to a riveting machine die with a stripping function. Background Art

[0002] In the sheet metal processing industry, many fasteners on metal products currently need to be flanging processed. The edge of the hole on the sheet is turned into a whole edge using a mold. The new edge can be used for tapping threads. In order to further improve the connection strength of the riveted fasteners, the fasteners can be riveted in the hole formed after flanging.

[0003] The prior art discloses a stamping riveting flattening die head with application number 201020694042.7, wherein the lower die seat is arranged below the upper die seat, the flanging punch is fixedly installed on the upper die seat, a fixed block is fixedly installed on the lower die seat, a sleeve is fixedly installed on the fixed block, a sliding hole is provided on the sleeve, a positioning column is slidably installed in the sliding hole, a reset spring is provided in the sleeve, and a depression is provided at the top end of the positioning column; the bottom section of the flanging punch is an inverted cone section, the top end surface diameter of the inverted cone section is greater than the width of the depression, a small cylindrical section is integrally and smoothly connected above the inverted cone section, a large cylindrical section is integrally and smoothly connected above the small cylindrical section, the diameter of the large cylindrical section is greater than the diameter of the small cylindrical section, the diameter of the small cylindrical section is equal to the top end surface diameter of the inverted cone section, and the diameter of the small cylindrical section is less than the diameter of the sliding hole. The utility model can reduce unnecessary processes during operation, achieve the purpose of completing the flanging process in one step, effectively improve work efficiency, and reduce manufacturing costs.

[0004] However, when using the above-mentioned die head, there are these problems: after the flanging is completed, the product is easy to get stuck in the flanging punch, resulting in the need to press and shake the product to remove it each time the material is taken out, which will cause the product to deform, and even the flanging punch will become loose and the concentricity will shift, resulting in poor flanging of the product. Summary of the invention

[0005] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a riveting machine die with a stripping function, which is easy to use, avoids the product from getting stuck in the extraction punch after flanging is completed, and has strong practicality.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A riveting machine mold with a stripping function comprises a first mold body and a second mold body located below the first mold body, the first mold body comprises a drawing punch, a fixed plate, a stripping plate and a connecting assembly, the fixed plate is arranged above the stripping plate, the upper end of the connecting assembly is slidably connected to the fixed plate, the lower end of the connecting assembly is fixedly connected to the stripping plate, the upper end of the drawing punch is fixedly connected to the fixed plate, the lower end of the drawing punch protrudes out of the stripping plate and is slidably connected to the stripping plate, the drawing punch sleeve is provided with a stripping spring, the stripping spring is located between the fixed plate and the stripping plate, and the second mold body is provided with a forming groove that cooperates with the drawing punch.

[0008] Furthermore, the number of the connecting components is two, and the two connecting components are respectively located on both sides of the extraction punch.

[0009] Furthermore, each of the connecting components includes a sleeve and a fastener disposed in the sleeve, the lower end of the fastener extends out of the lower end of the sleeve and is fixedly connected to the stripping plate, and the upper end of the sleeve is slidably connected to the fixing plate.

[0010] Furthermore, each of the connecting components also includes a limit block located at the upper end of the fixed plate, and the lower end of the fastener passes through the limit block, the fixed plate and the sleeve in sequence until it is fixedly connected to the stripping plate, and the fastener is fixedly connected to the limit block.

[0011] Furthermore, an ejection spring and an inner ejection block are provided in the molding groove, the lower end of the ejection spring is connected to the bottom wall of the second mold body, the upper end of the ejection spring is connected to the inner ejection block, and the inner ejection block is slidably connected to the inner wall of the second mold body.

[0012] Furthermore, the side wall of the second mold body is provided with two symmetrically arranged limit slide grooves, the limit slide grooves are communicated with the forming grooves, and limit pins are respectively extended to the two limit slide grooves at both ends of the inner top block, and the limit pins are inserted into the limit slide grooves and can be slid up and down along the limit slide grooves.

[0013] Furthermore, the limiting sliding groove is a long hole structure, and the two limiting sliding grooves extend along the axial direction of the second mold body.

[0014] Furthermore, a plurality of visible windows communicating with the forming grooves are formed on the side wall of the second mold body, and the visible windows are located below the limiting sliding grooves.

[0015] Furthermore, the upper end of the fixing plate and the lower end of the second mold body are both provided with mounting heads.

[0016] The beneficial effects of the utility model are as follows: compared with the prior art, the riveting machine mold of the present application applies an elastic force to the semi-finished product after flanging through the stripping spring, so that the semi-finished product after flanging can be quickly separated from the stripping plate, avoiding the product from being easily stuck in the extraction punch after flanging is completed, and there is no need to shake the semi-finished product to force the material to be unloaded, thereby realizing the rapid processing of the flanging holes of the semi-finished product, improving production efficiency, improving product processing quality, and reducing the generation of defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a riveting machine die with a stripping function;

[0018] Figure 2 for Figure 1 A partial cross-sectional view of the first mold body along line AA;

[0019] Figure 3 is a side view of the second mold body;

[0020] Figure 4 for Figure 3 Partial cross-sectional view along line BB.

[0021] Reference numerals include:

[0022] 1. Extraction punch; 2. Fixed plate; 3. Stripping plate; 4. Stripping spring; 5. Connecting assembly; 51. Sleeve; 52. Fastener; 53. Limit block; 6. Second mold body; 61. Forming groove; 62. Limit slide groove; 63. Visual window; 7. Ejection spring; 8. Inner ejector block; 81. Limit pin; 9. Mounting head. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0024] like Figure 1-4 As shown, a riveting machine mold with a stripping function includes a first mold body and a second mold body 6 located below the first mold body, the first mold body includes a pull-out punch 1, a fixed plate 2, a stripping plate 3 and a connecting component 5, the fixed plate 2 is arranged above the stripping plate 3, the upper end of the connecting component 5 is slidably connected to the fixed plate 2, the lower end of the connecting component 5 is fixedly connected to the stripping plate 3, the upper end of the pull-out punch 1 is fixedly connected to the fixed plate 2, the lower end of the pull-out punch 1 protrudes out of the stripping plate 3 and is slidably connected to the stripping plate 3, the pull-out punch 1 is provided with a stripping spring 4, the stripping spring 4 is located between the fixed plate 2 and the stripping plate 3, and the second mold body 6 is provided with a forming groove 61 that cooperates with the pull-out punch 1.

[0025] The die of the riveting machine with stripping function of the utility model has a simple structure and is easy to use. The first die body can realize rapid stripping through the stripping spring 4, which effectively improves the work efficiency. When in use, the extraction punch 1 is aligned and positioned with the prefabricated hole of the semi-finished product, and the first die body is moved downward by the pressure of the riveting machine. The extraction punch 1 moves downward with the semi-finished product until the lower end of the semi-finished product is inserted into the forming groove 61, and the lower end of the extraction punch 1 abuts against the upper end of the semi-finished product, and the upper end of the second die body 6 abuts against the lower end of the semi-finished product. The extraction punch 1 and the second die body 6 cooperate with each other to press the semi-finished product, and then the extraction punch 1 continues to move downward, and the stripping spring 4 is compressed. At this time, the extraction punch 1 gradually opens the prefabricated hole of the semi-finished product, and the flanging of the semi-finished product begins, until the extraction punch 1 gradually presses the semi-finished product into the bottom end of the forming groove 61, and the flanging ends. Then the first die body moves upwards driven by the riveting machine, and the extraction punch 1 also starts to move upwards driven by the riveting machine. Under the elastic restoring force of the stripping spring 4, the stripping plate 3 pushes the semi-finished product after flanging downwards, thereby achieving the stripping function and taking out the product. Compared with the prior art, the riveting machine mold of the present application applies an elastic force to the semi-finished product after flanging through the stripping spring 4, so that the semi-finished product after flanging is quickly separated from the stripping plate 3, avoiding the product from being easily stuck to the extraction punch 1 after flanging is completed, and there is no need to shake the semi-finished product to force the material to be unloaded, so that the flanging hole of the semi-finished product can be quickly processed, the production efficiency is improved, the product processing quality is improved, and the generation of defective products is reduced.

[0026] Furthermore, the number of the connecting components 5 is two, and the two connecting components 5 are respectively located on both sides of the extraction punch 1. In this embodiment, the two connecting components 5 are symmetrically arranged on both sides of the extraction punch 1, so that when the extraction punch 1 punches the semi-finished product downward, the upper ends of the two connecting components 5 slide upward along the fixed plate 2 at the same time, so that the two ends of the stripping plate 3 are evenly stressed, and the two sides of the stripping spring 4 are evenly stressed, so that the height of the flanging of the semi-finished product is uniform after stripping, thereby reducing product deformation.

[0027] Further, each of the connecting components 5 includes a sleeve 51 and a fastener 52 disposed in the sleeve 51, the lower end of the fastener 52 extends out of the lower end of the sleeve 51 and is fixedly connected to the stripper plate 3, and the upper end of the sleeve 51 is slidably connected to the fixed plate 2, and the structure is simple. In this embodiment, the fastener 52 is threadedly connected to the stripper plate 3, and the upper end of the sleeve 51 is penetrated through the fixed plate 2 and slidably connected to the fixed plate 2, which is convenient for assembly.

[0028] Furthermore, each of the connecting components 5 further includes a limit block 53 located at the upper end of the fixed plate 2, and the lower end of the fastener 52 sequentially passes through the limit block 53, the fixed plate 2 and the sleeve 51 until it is fixedly connected to the stripping plate 3, and the fastener 52 is fixedly connected to the limit block 53. The limit block 53 is used to limit the position of the sleeve 51 to prevent the sleeve 51 from being separated from the fixed plate 2 when the stripping spring 4 returns to its original position, and has strong practicality. In this embodiment, the limit block 53 is a locking nut.

[0029] Furthermore, an ejector spring 7 and an inner ejector block 8 are provided in the molding groove 61, the lower end of the ejector spring 7 is connected to the bottom wall of the second mold body 6, the upper end of the ejector spring 7 is connected to the inner ejector block 8, and the inner ejector block 8 is slidably connected to the inner wall of the second mold body 6. Specifically, after the extraction punch 1 finishes flanging the semi-finished product, it starts to move upward under the drive of the riveting machine, and the inner ejector block 8 ejects the flanging semi-finished product under the action of the ejector spring 7, and at the same time, the stripper plate 3 pushes the flanging semi-finished product down under the action of the stripper spring 4, thereby achieving the stripping function, taking out the product, and completing the processing, realizing the rapid processing of the flanging hole of the semi-finished product, and improving the production efficiency.

[0030] Furthermore, the side wall of the second mold body 6 is provided with two symmetrically arranged limiting grooves 62, the limiting grooves 62 are communicated with the forming grooves 61, and the two ends of the inner top block 8 extend limiting pins 81 to the two limiting grooves 62 respectively, and the limiting pins 81 are inserted into the limiting grooves 62 and can slide up and down along the limiting grooves 62. At the same time, when the inner top block 8 ejects the semi-finished product after flanging under the action of the ejection spring 7, the inner top block 8 cannot be separated from the second mold body 6 due to the restriction of the limiting pins 81, and has strong stability.

[0031] Furthermore, the limiting slide groove 62 is a long hole structure, and the two limiting slide grooves 62 extend along the axial direction of the second mold body 6. The mutual cooperation between the limiting pin 81 and the limiting slide groove 62 limits the sliding distance of the inner top block 8. Specifically, the drawing punch 1 moves downward with the semi-finished product until the lower end of the semi-finished product abuts against the inner top block 8 in the forming groove 61, pushing the inner top block 8 to slide downward along the inner wall of the second mold body 6, and the limiting pin 81 also slides downward in the limiting slide groove 62. The drawing punch 1 gradually presses the semi-finished product into the forming groove 61 until the limiting pin 81 is located at the lowest point of the limiting slide groove 62, and the flanging is completed. The maximum diameter length of the limiting slide groove 62 can be set according to the thickness of the product to facilitate the realization of good flanging.

[0032] Furthermore, the side wall of the second mold body 6 is provided with a plurality of visual windows 63 communicating with the molding groove 61, and the visual windows 63 are located below the limiting slide groove 62. The visual windows 63 are used to observe the use status of the ejection spring 7, and whether the ejection spring 7 is damaged can be found in time.

[0033] Furthermore, the upper end of the fixed plate 2 and the lower end of the second mold body 6 are both provided with mounting heads 9. In this embodiment, the mounting head 9 at the upper end of the fixed plate 2 is used to be detachably connected to the external riveting machine slider, and the mounting head 9 at the lower end of the second mold body 6 is used to be detachably connected to the riveting machine base, which is convenient for assembly.

[0034] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A riveting machine die with stripping function, characterized in that: The invention comprises a first die body and a second die body (6) located below the first die body, wherein the first die body comprises a drawing punch (1), a fixed plate (2), a stripping plate (3) and a connecting assembly (5), wherein the fixed plate (2) is arranged above the stripping plate (3), the upper end of the connecting assembly (5) is slidably connected to the fixed plate (2), the lower end of the connecting assembly (5) is fixedly connected to the stripping plate (3), the upper end of the drawing punch (1) is fixedly connected to the fixed plate (2), the lower end of the drawing punch (1) protrudes out of the stripping plate (3) and is slidably connected to the stripping plate (3), the drawing punch (1) is sleeved with a stripping spring (4), and the stripping spring (4) is located between the fixed plate (2) and the stripping plate (3), and the second die body (6) is provided with a forming groove (61) which cooperates with the drawing punch (1).

2. The riveting machine die with stripping function according to claim 1, characterized in that: The number of the connecting components (5) is two, and the two connecting components (5) are respectively located on both sides of the extraction punch (1).

3. The riveting machine die with stripping function according to claim 2 is characterized in that: Each of the connecting components (5) comprises a sleeve (51) and a fastener (52) disposed in the sleeve (51), wherein the lower end of the fastener (52) extends out of the lower end of the sleeve (51) and is fixedly connected to the stripping plate (3), and the upper end of the sleeve (51) is slidably connected to the fixing plate (2).

4. The riveting machine die with stripping function according to claim 3 is characterized in that: Each of the connecting components (5) further comprises a limit block (53) located at the upper end of the fixing plate (2), the lower end of the fastener (52) sequentially passes through the limit block (53), the fixing plate (2) and the sleeve (51) until being fixedly connected to the stripping plate (3), and the fastener (52) is fixedly connected to the limit block (53).

5. The riveting machine die with stripping function according to claim 1, characterized in that: An ejection spring (7) and an inner ejection block (8) are provided in the molding groove (61); the lower end of the ejection spring (7) is connected to the bottom wall of the second mold body (6); the upper end of the ejection spring (7) is connected to the inner ejection block (8); and the inner ejection block (8) is slidably connected to the inner wall of the second mold body (6).

6. The riveting machine die with stripping function according to claim 5, characterized in that: The side wall of the second mold body (6) is provided with two symmetrically arranged limit slide grooves (62), the limit slide grooves (62) are communicated with the forming groove (61), and limit pins (81) are respectively extended from the two ends of the inner top block (8) toward the two limit slide grooves (62), and the limit pins (81) are inserted into the limit slide grooves (62) and can be slidably connected up and down along the limit slide grooves (62).

7. The riveting machine die with stripping function according to claim 6, characterized in that: The limiting sliding groove (62) is a long hole structure, and the two limiting sliding grooves (62) extend along the axial direction of the second mold body (6).

8. The riveting machine die with stripping function according to claim 6, characterized in that: The side wall of the second mold body (6) is provided with a plurality of visible windows (63) communicating with the molding groove (61), and the visible windows (63) are located below the limiting sliding groove (62).

9. The riveting machine die with stripping function according to claim 1, characterized in that: The upper end of the fixing plate (2) and the lower end of the second mold body (6) are both provided with mounting heads (9).

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