Sheet stamping and riveting core mold

Abstract

The application discloses a kind of sheet stamping stack riveting iron core mould, including bottom plate, bottom plate is used to install and fix the mould of sheet stamping stack riveting iron core, the top of bottom plate is fixedly installed and is cut to sheet punching processing cutting die group, the top of bottom plate is fixedly installed and is punched with die group, punched with die group and cutting die group are inlaid, the bottom of stack riveting die inner wall is equipped with multiple die punching, the bottom of punching base is fixedly connected with bottom plate, stack riveting die is fixedly connected with punching base by fixed bolt, stack riveting sleeve is fixedly sleeved in the inside of stack riveting die.The application uses the cooperation of cutting film group and punching die group, cutting film group can be cut to sheet first processing, then cut sheet is sequentially accumulated in stack riveting die, and then stack riveting die can be punched to multiple cutting completed sheet in its inside, and stack riveting die can limit sheet, to improve the stability of its punching processing.

Description

Technical Field

[0001] This invention relates to the field of molds, and in particular to a thin plate stamping and riveting iron core mold. Background Technology

[0002] The cores of commonly used transformers are generally made of silicon steel sheets. Silicon steel is a type of steel containing silicon, with a silicon content ranging from 0.8% to 4.8%. Silicon steel is used to make the cores of transformers because it is a magnetic material with strong magnetic permeability. In a current-carrying coil, it can generate a large magnetic induction intensity, which allows the transformer to be made smaller.

[0003] When producing iron cores, the sheet metal is usually formed by stamping it with multiple stamping dies. The normal die design idea is to stamp the overlapping rivet points first, and then rivet the product while stamping the outer diameter. However, for thin plates with round anchor points, the outer diameter of the product is ￠140.6.

[0004] Products produced by this process require individual punching of each stamped sheet, which not only reduces the efficiency of punching, but also causes the punched sheet to slide on the punching die, resulting in a change in the punching position and low accuracy of the punching dimensions. Summary of the Invention

[0005] The purpose of this invention is to provide a thin-plate stamping and riveting iron core mold to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a thin plate stamping and riveting iron core mold, comprising:

[0007] The base plate is used to install and fix the mold for stamping and riveting thin plate iron cores;

[0008] A punching module for thin plate punching is fixedly installed on the top of the base plate, and a punching module for punching holes in the thin plate after punching is fixedly installed on the top of the base plate. The punching module is in close contact with the punching module.

[0009] The punching module includes a punching base, a riveting die, and a riveting sleeve. The riveting die is used to support and position the sheet metal. Multiple die punches are provided at the bottom of the inner wall of the riveting die.

[0010] Preferably, the bottom of the punching base is fixedly connected to the base plate, and the bottom of the punching base is provided with multiple fixing bolts. The riveting die is fixedly connected to the punching base through the fixing bolts, and the riveting sleeve is fixedly sleeved inside the riveting die.

[0011] Preferably, the punching die assembly includes a punching base, a mounting plate, a bearing die base, a punching die frame, an ejector plate, and a die spring-loaded pin assembly. The die spring-loaded pin assembly is disposed between the punching base and the ejector plate, and the punching base is fixedly connected to the top of the base plate.

[0012] Preferably, a plurality of fixing columns are fixedly connected to the top side of the punching base, the top of the fixing columns are fixedly connected to the mounting plate, a plurality of connecting bolts are provided at the bottom of the mounting plate, and the bearing mold base is fixedly connected to the top of the mounting plate by the connecting bolts.

[0013] Preferably, the top of the punching die frame is provided with a plurality of internal bolts, the punching die frame is fixedly connected to the bearing die base through the internal bolts, the top of the outer wall of the ejector template is slidably sleeved with the punching die frame, the bottom of the outer wall of the ejector template is slidably sleeved with the inner cavity of the bearing die base, and the top of the ejector template and the top of the punching die frame are at the same horizontal line.

[0014] Preferably, a first guide shaft is provided in the middle of the inner wall of the bearing mold base, and a second guide shaft is provided on the side of the bottom of the inner cavity of the bearing mold base. The top of the first guide shaft and the top of the second guide shaft are rotatably fitted with positioning bolts. The bottom of the outer wall of the positioning bolt is threadedly fitted with the bearing mold base. A connecting hole is opened on the side of the top of the ejector template. The outer wall of the second guide shaft is slidably fitted with the connecting hole. A positioning hole is opened in the middle of the upper surface of the ejector template. The top of the outer wall of the first guide shaft is slidably engaged with the inner cavity of the positioning hole.

[0015] Preferably, the die ejector pin assembly includes an ejector component, the bottom of the outer wall of the ejector component is slidably sleeved with the punching base, the bottom of the ejector template is fixedly connected with a plurality of ejector pins, the outer wall of the ejector pin is slidably sleeved with the bearing die base and the mounting plate, and the bottom of the ejector pin is in contact with the ejector component.

[0016] Preferably, a disc spring is slidably sleeved on the outer wall of the ejector, and a plurality of support pads are provided on the top of the disc spring. The support pads are slidably sleeved on the top of the outer wall of the ejector, and the disc spring and the support pads are slidably engaged between the punching base and the ejector.

[0017] Preferably, multiple first guide posts are fixedly connected to both sides of the top of the base plate, and multiple second guide posts are fixedly connected to the sides of the top of the base plate. The first and second guide posts are used to improve the stability of the die closing of the thin plate stamping and riveting iron core mold. Multiple mounting grooves are provided on both sides of the base plate.

[0018] The technical effects and advantages of this invention are as follows:

[0019] (1) The present invention utilizes the combined use of a punching die set and a punching die set. The punching die set includes a punching base, a stacking die and a stacking sleeve. The punching die set can punch the sheet material first, and then the punched sheet material is stacked in the stacking die in sequence. This allows the stacking die to punch the multiple punched sheet materials inside it. The stacking die can also limit the sheet material, thereby improving the stability of the punching process.

[0020] (2) The present invention utilizes the setting method of the punching module, which includes a punching base, a mounting plate, a bearing mold base, a punching mold frame, a stripping template, a fixing column, a first guide shaft, a second guide shaft, and a die spring ejector pin group. When the product is located at the top of the punching mold frame, the sheet metal can be punched. Then, under the action of the die spring ejector pin group and the stripping template, the punched sheet metal can be ejected so that it can be transported to the inside of the stacking die.

[0021] (3) The present invention utilizes the setting method of the die spring ejector pin group. The die spring ejector pin group includes an ejector, an ejector pin, a disc spring and multiple support pads. By changing the number of support pads, the initial deformation of the disc spring can be changed, so that the disc spring applies a matching initial elastic force to the ejector. After the mounting plate is removed, the ejector and the disc spring can be disassembled and maintained. Attached Figure Description

[0022] Figure 1 This is a top-view structural diagram of the present invention.

[0023] Figure 2 This is a schematic diagram of the internal structure of part of the front of the present invention.

[0024] Figure 3 This is a schematic diagram of the internal structure of the punching base portion of the present invention.

[0025] Figure 4 This is a schematic diagram of the internal structure of the punched base portion of the present invention.

[0026] In the diagram: 1. Base plate; 11. First guide post; 12. Second guide post; 13. Mounting groove; 2. Punching module; 21. Punching base; 22. Mounting plate; 23. Bearing mold base; 24. Unloading template; 25. Fixing post; 26. First guide shaft; 27. Second guide shaft; 281. Ejector; 282. Ejector pin; 283. Disc spring; 284. Support pad; 29. ​​Punching die frame; 3. Punching module; 31. Punching base; 32. Riveting die; 33. Riveting sleeve; 34. Die punching. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] This invention provides, for example Figure 1-4 The thin plate stamping and riveting iron core die shown includes:

[0029] The base plate 1 is used to install and fix the mold for stamping and riveting iron cores of thin plates. Multiple first guide posts 11 are fixedly connected to both sides of the top of the base plate 1, and multiple second guide posts 12 are fixedly connected to the sides of the top of the base plate 1. The first guide posts 11 and the second guide posts 12 are used to improve the stability of the mold closing of the mold for stamping and riveting iron cores of thin plates. Multiple mounting grooves 13 are opened on both sides of the base plate 1. The mounting grooves 13 are used to fix the base plate 1 to the punching machine with bolts. The punching machine is equipped with an upper punching die and an upper punching die that are used in conjunction with the punching die 2 and the punching die 3.

[0030] A punching die 2 for thin plate punching is fixedly installed on the top of the base plate 1. A punching die 3 for punching holes in the thin plate after punching is also fixedly installed on the top of the base plate 1. The punching die 3 is in close contact with the punching die 2. The punching die 3 includes a punching base 31, a stacking die 32, and a stacking sleeve 33. The stacking die 32 is used to support and position the plate. Multiple die holes 34 are opened at the bottom of the inner wall of the stacking die 32. The bottom of the punching base 31 is fixedly connected to the base plate 1. Multiple fixing bolts are provided at the bottom of the punching base 31. The stacking die 32 is fixedly connected to the punching base 31 by fixing bolts. The stacking sleeve 33 is fixedly sleeved inside the stacking die 32. The stacking die 32 can store multiple iron core plates. Thus, by using the die holes 34 and the punching upper die in conjunction, multiple iron core plates can be punched.

[0031] The punching die 2 includes a punching base 21, a mounting plate 22, a bearing die base 23, a punching die frame 29, an ejector plate 24, and a die ejector pin assembly. Under the action of the die ejector pin assembly, the ejector plate 24 can eject the punched recessed sheet metal. The die ejector pin assembly is located between the punching base 21 and the ejector plate 24. The punching base 21 is fixedly connected to the top of the base plate 1. Multiple fixing posts 25 are fixedly connected to the side of the top of the punching base 21. The tops of the fixing posts 25 are fixedly connected to the mounting plate 22. Multiple connecting bolts are provided at the bottom of the mounting plate 22. The bearing die base 23 is fixedly connected to the top of the mounting plate 22 by connecting bolts. Multiple internal bolts are provided at the top of the punching die frame 29. Loosening and removing the connecting bolts, internal bolts, and positioning bolts allows for disassembly and maintenance of the punching die 2. 9 is fixedly connected to the bearing mold base 23 by internal bolts. The top of the outer wall of the ejector template 24 is slidably sleeved with the punching mold frame 29, and the bottom of the outer wall of the ejector template 24 is slidably sleeved with the inner cavity of the bearing mold base 23. The top of the ejector template 24 and the top of the punching mold frame 29 are on the same horizontal line, so the iron core plate is located at the top of the punching mold frame 29. When used in conjunction with the upper punching die, the iron core plate can be punched. The upper punching die has multiple recesses on its side. When the upper punching die is used in conjunction with the punching die assembly 2, the iron core plate can have multiple connection points when punching. When the iron core plate moves, the punched part of the iron core plate can be moved to the top of the punching die assembly 3. Then, when the punching die assembly 3 is used in conjunction with the upper punching die, the punched part of the iron core plate can enter the interior of the riveting die 32.

[0032] A first guide shaft 26 is provided in the middle of the inner wall of the bearing mold base 23. The first guide shaft 26 and the second guide shaft 27 can limit the position of the ejector template 24 to ensure its stability of movement. A second guide shaft 27 is provided on the side of the bottom of the inner cavity of the bearing mold base 23. The top of the first guide shaft 26 and the top of the second guide shaft 27 are rotatably fitted with positioning bolts. The bottom of the outer wall of the positioning bolt is threadedly fitted with the bearing mold base 23. A connecting hole is opened on the side of the top of the ejector template 24. The outer wall of the second guide shaft 27 is slidably fitted with the connecting hole. The upper surface of the ejector template 24 A positioning hole is provided in the middle of the first guide shaft 26. The diameter of the bottom of the positioning hole is smaller than the diameter of the top of the positioning hole, and the diameter of the top of the outer wall of the first guide shaft 26 is larger than the diameter of the bottom of the outer wall. Thus, the first guide shaft 26 can also limit the position of the ejector plate 24. That is, when the bottom of the inner wall of the positioning hole on the ejector plate 24 contacts the protruding part of the outer wall of the first guide shaft 26, the ejector plate 24 can be limited, thus preventing the top of the ejector plate 24 from being higher than the top of the punching die set 29 under the action of the die ejector pin group, and preventing the top of the outer wall of the first guide shaft 26 from slidingly engaging with the inner cavity of the positioning hole.

[0033] The die ejector pin assembly includes an ejector 281, which consists of a column and a disc plate. A disc spring 283 and a support washer 284 are sleeved on the outside of the column, and the disc spring 283 and the support washer 284 are located at the bottom of the disc plate. Thus, the disc spring 283 and the support washer 284 can provide an elastic support and restoring force to the ejector 281. The bottom of the outer wall of the ejector 281 is slidably sleeved with the punching base 21. Multiple ejector pins 282 are fixedly connected to the bottom of the ejector template 24. The outer wall of the ejector pin 282 is slidably sleeved with the bearing die base 23 and the mounting plate 22. The bottom of the ejector pin 282... The ejector 281 is fitted to the outer wall of the ejector 281, and a disc spring 283 is slidably sleeved thereon. The top of the disc spring 283 is provided with multiple support pads 284. Depending on the elastic force that the ejector 281 exerts on the ejector template 24 through the ejector pin 282, different numbers of support pads 284 can be installed, thereby changing the initial deformation of the disc spring 283 and thus changing the elastic support force that the disc spring 283 initially exerts on the ejector 281. The support pads 284 are slidably sleeved on the top of the outer wall of the ejector 281, and the disc spring 283 and the support pads 284 are slidably engaged between the punching base 21 and the ejector 281.

[0034] The working principle of this invention is as follows: When processing the iron core sheet, the iron core sheet is first punched on the punching die 2, that is, the iron core sheet is located at the top of the punching die frame 29. Then the iron core sheet is punched, and the iron core sheet presses the ejector template 24 to descend. The ejector template 24 presses the ejector 281 through the ejector pin 282. The ejector 281 presses the disc spring 283. After the iron core sheet is punched, the disc spring 283 pushes the ejector 281 to rise. The ejector 281 pushes the ejector template 24 to rise through the ejector pin 282. Then the punched part of the iron core sheet separates from the punching die frame 29.

[0035] Then the core sheet moves to the top of the punching module 3, and the punched part of the core sheet is squeezed to break its connection point, so that the punched part enters the stacking die 32 until a certain number of core sheets are stored inside the stacking die 32, and then the multiple core sheets inside the stacking die 32 are punched.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A thin-plate stamping and riveting iron core die, comprising: Base plate (1), the base plate (1) is used to install and fix the mold for stamping and riveting thin plate iron core; The base plate (1) is characterized by having a punching module (2) for thin plate punching fixedly installed on its top, and a punching module (3) for punching holes in the thin plate after punching fixedly installed on its top, wherein the punching module (3) is in contact with the punching module (2). The punching module (3) includes a punching base (31), a stacking die (32), and a stacking sleeve (33). The stacking die (32) is used to support and position the sheet metal. The bottom of the inner wall of the stacking die (32) is provided with multiple die punch holes (34). The punching module (2) includes a punching base (21), a mounting plate (22), a support die base (23), a punching die frame (29), a stripper template (24), and a die spring ejector pin assembly. The die spring ejector pin assembly is located between the punching base (21) and the stripper template (24). The punching base (21) is fixedly connected to the top of the base plate (1). Multiple fixed... The top of the fixed column (25) is fixedly connected to the mounting plate (22). The bottom of the mounting plate (22) is provided with multiple connecting bolts. The bearing mold base (23) is fixedly connected to the top of the mounting plate (22) by connecting bolts. The top of the punching mold frame (29) is provided with multiple inner bolts. The punching mold frame (29) is fixedly connected to the bearing mold base (23) by inner bolts. The top of the outer wall of the ejection template (24) is slidably sleeved with the punching mold frame (29). The bottom of the outer wall of the ejection template (24) is slidably sleeved with the inner cavity of the bearing mold base (23). The top of the ejection template (24) and the top of the punching mold frame (29) are on the same horizontal line.

2. The thin plate stamping and riveting iron core mold according to claim 1, characterized in that, The bottom of the punching base (31) is fixedly connected to the base plate (1). The bottom of the punching base (31) is provided with multiple fixing bolts. The stacking die (32) is fixedly connected to the punching base (31) by fixing bolts. The stacking sleeve (33) is fixedly sleeved inside the stacking die (32).

3. A thin-plate stamping and riveting iron core mold according to claim 2, characterized in that, A first guide shaft (26) is provided in the middle of the inner wall of the bearing mold base (23), and a second guide shaft (27) is provided on the side of the bottom of the inner cavity of the bearing mold base (23). The top of the first guide shaft (26) and the top of the second guide shaft (27) are rotatably inserted and sleeved with positioning bolts. The bottom of the outer wall of the positioning bolt is threaded and sleeved with the bearing mold base (23). A connecting hole is opened on the side of the top of the ejector template (24). The outer wall of the second guide shaft (27) is slidably sleeved with the connecting hole. A positioning hole is opened in the middle of the upper surface of the ejector template (24). The top of the outer wall of the first guide shaft (26) is slidably engaged with the inner cavity of the positioning hole.

4. A thin-plate stamping and riveting iron core mold according to claim 1, characterized in that, The die spring ejector pin assembly includes an ejector (281), the bottom of the outer wall of the ejector (281) is slidably sleeved with the punching base (21), the bottom of the ejection template (24) is fixedly connected with a plurality of ejector pins (282), the outer wall of the ejector pin (282) is slidably sleeved with the bearing mold base (23) and the mounting plate (22), and the bottom of the ejector pin (282) is in contact with the ejector (281).

5. A thin-plate stamping and riveting iron core mold according to claim 4, characterized in that, A disc spring (283) is slidably sleeved on the outer wall of the ejector (281). A plurality of support pads (284) are provided on the top of the disc spring (283). The support pads (284) are slidably sleeved on the top of the outer wall of the ejector (281). The disc spring (283) and the support pads (284) are slidably engaged between the punching base (21) and the ejector (281).

6. A thin-plate stamping and riveting iron core die according to claim 1, characterized in that, Multiple first guide posts (11) are fixedly connected to both sides of the top of the base plate (1), and multiple second guide posts (12) are fixedly connected to the sides of the top of the base plate (1). The first guide posts (11) and the second guide posts (12) are used to improve the stability of the die closing of the thin plate stamping stacked iron core mold. Multiple mounting grooves (13) are opened on both sides of the base plate (1).

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