Transformer hardware bending and stamping die
Patent Information
- Application Number
- CN202522108335.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-09-29
AI Technical Summary
如图1～2所示的一种变压器五金件，其折弯区域具有压死边、第一直角折弯部和第二直角折弯部，其中压死边是将变压器五金件板材的折弯区域折至180°或接近180°的极限状态，使板材的两个折弯面紧密贴合，传统折弯冲压模具在进行压死边加工时，通常是使用压平凸模和贴合凹模的结构，具体为压平凸模下行，将预折弯后的变压器五金件压在一固定的贴合凹模上，使变压器五金件的两个折弯面贴合，其只能通过压平凸模提供单方向的作用力，即向下的压力，对于一些冲压要求较高的变压器五金件，可能无法保证变压器五金件产品有效、稳定地实现压死边折弯成形
[0010]模具在闭模时，上模下移，首先脱料板与下模板先接触闭合压住产品，同时上模折弯限位块下端压在预折弯后的产品的压死边区域顶部，提供一个向下的作用力，然后上模座、上垫板和夹板继续下移，从而带动上模主推块下移并从脱料板穿出，上模主推块推动下模副推块向下滑动，下模副推块通过第一倾斜楔面与下模滑块的第一倾斜接触面配合，从而推动下模滑块向左滑动，下模滑块向左滑动时通过第二倾斜接触面与下模折弯顶件的第二倾斜楔面配合，从而推动下模折弯顶件向上滑动，下模折弯顶件的顶板顶在产品的压死边区域底部，提供一个向上的作用力，顶板的作用力与上模折弯限位块的作用力相向设置，使产品能够有效地完成压死边的折弯成形，保证产品的稳定产出，提升模具的冲压强度。
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Figure CN224642143U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stamping die technology, and in particular to a bending stamping die for transformer hardware parts. Background Technology
[0002] Bending and stamping dies are a common type of die. They achieve the purpose of bending parts by stamping, so that the shape of the parts to be bent meets the requirements. For example... Figures 1-2 The transformer hardware shown has a bending area with a pressed edge, a first right-angle bend, and a second right-angle bend. The pressed edge is achieved by bending the transformer hardware sheet to a limit of 180° or close to 180°, so that the two bending surfaces of the sheet are tightly fitted together. Traditional bending stamping dies usually use a structure of a flattening punch and a fitting die when performing pressed edge processing. Specifically, the flattening punch moves downward to press the pre-bent transformer hardware onto a fixed fitting die, so that the two bending surfaces of the transformer hardware are fitted together. This can only provide unidirectional force, i.e., downward pressure, through the flattening punch. For some transformer hardware with high stamping requirements, it may not be possible to guarantee that the transformer hardware product can effectively and stably achieve pressed edge bending. Utility Model Content
[0003] To address the problems existing in the prior art, this utility model provides a bending and stamping die for transformer hardware parts.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0005] A bending and stamping die for transformer hardware includes an upper die and a lower die. The upper die includes an upper die base, an upper pad, an upper clamping plate, a back stripper plate, and a stripper plate. The lower die includes a lower die template, a lower pad, and a lower die base. An upper die main push block is fixed on the upper clamping plate. The lower end of the upper die main push block passes through the back stripper plate and can protrude from the stripper plate. An upper die bending limiting block is fixed on the stripper plate. The lower end of the upper die bending limiting block protrudes from the stripper plate and is used to press against the top of the dead edge area of the product. The lower die template is provided with a lower die auxiliary push block, a lower die slider, a lower die bending top piece, and a lower die bending positioning piece. The lower die auxiliary push block is slidably connected to the lower die template and is located below the upper die main push block. The lower end of the lower die auxiliary push block is provided with... The lower die bending top piece has a first inclined wedge surface. It is slidably connected to the lower template and located below the upper die bending limit block. The lower end of the lower die bending top piece has a second inclined wedge surface, and the upper end has a top plate for pressing against the bottom of the dead edge area of the product. The lower die slider is slidably connected to the lower template and located below the lower die auxiliary push block and the lower die bending top piece. The two ends of the lower die slider are respectively provided with a first inclined contact surface and a second inclined contact surface that are adapted to the first and second inclined wedge surfaces. The lower die bending positioning piece is fixed on the lower template and located on one side of the lower die bending top piece. The lower die bending positioning piece is provided with a positioning plate for pressing against one side of the dead edge area of the product.
[0006] In some embodiments, a first through hole is provided vertically below the lower die auxiliary push block on the lower pad plate, and a second through hole is provided vertically below the first through hole on the lower die base; a lifting and resetting assembly is provided below the lower die auxiliary push block, the lifting and resetting assembly includes a push rod, a first spring and a stop screw arranged sequentially from top to bottom, the push rod passes through the first through hole, its upper end abuts against the lower end of the lower die auxiliary push block, the stop screw is threaded to the lower end of the second through hole, the first spring passes through the second through hole, one end abuts against the lower end of the push rod and the other end abuts against the upper end of the stop screw.
[0007] In some embodiments, the side wall of the lower die auxiliary push block is provided with a first shoulder; a first limiting screw is threadedly connected to the lower die plate on one side of the first shoulder, and the head of the first limiting screw is located above the first shoulder, which is used to cooperate with the first shoulder to limit the lower die auxiliary push block.
[0008] In some embodiments, the side wall of the lower die bending top part is provided with a second shoulder; a second limiting screw is threadedly connected to the lower die on one side of the second shoulder, a limiting baffle is installed on the second limiting screw, and the limiting baffle is located above the second shoulder; a second spring is vertically provided between the second shoulder and the limiting baffle, one end of the second spring abuts against the second shoulder, and the other end abuts against the limiting baffle.
[0009] Compared with the prior art, this utility model achieves at least the following beneficial effects:
[0010] When the mold is closed, the upper mold moves downward. First, the stripper plate and the lower mold plate contact and close to press down on the product. At the same time, the lower end of the upper mold bending limit block presses down on the top of the dead edge area of the pre-bent product, providing a downward force. Then, the upper mold base, upper pad, and clamping plate continue to move downward, thereby driving the upper mold main push block to move downward and pass through the stripper plate. The upper mold main push block pushes the lower mold auxiliary push block to slide downward. The lower mold auxiliary push block cooperates with the first inclined contact surface of the lower mold slider through the first inclined wedge surface, thereby pushing the lower mold slider to slide to the left. When the lower mold slider slides to the left, it cooperates with the second inclined wedge surface of the lower mold bending top part through the second inclined contact surface, thereby pushing the lower mold bending top part to slide upward. The top plate of the lower mold bending top part presses against the bottom of the dead edge area of the product, providing an upward force. The force of the top plate and the force of the upper mold bending limit block are set opposite to each other, so that the product can effectively complete the bending and forming of the dead edge, ensuring stable product output and improving the stamping strength of the mold. Attached Figure Description
[0011] Figure 1 This is a top view of the transformer hardware product.
[0012] Figure 2 This is a side view of a transformer hardware product.
[0013] Figure 3 This is a schematic diagram of the structure during mold making in an embodiment of this application;
[0014] Figure 4 This is a schematic diagram of the structure when the mold is closed according to an embodiment of this application;
[0015] Figure 5 This is a schematic diagram of the connection structure of the upper die main push block, lower die auxiliary push block, lower die slider, lower die bending top part and lower die bending positioning part in an embodiment of this application.
[0016] The diagram is labeled as follows: 1. Upper die base; 2. Upper backing plate; 3. Upper clamping plate; 4. Back stripper plate; 5. Stripper plate; 6. Lower die template; 7. Lower backing plate; 71. First through hole; 8. Lower die base; 81. Second through hole; 9. Upper die main push block; 10. Upper die bending limit block; 20. Lower die auxiliary push block; 201. First inclined wedge surface; 202. First shoulder; 30. Lower die slider; 301. First inclined contact surface; 302. Second inclined contact surface; 40. Lower die bending top piece; 4 01. Second inclined wedge surface; 402. Second shoulder; 50. Lower die bending positioning component; 501. Positioning plate; 60. Lifting and resetting assembly; 601. Push rod; 602. First spring; 603. Stop screw; 70. First limit screw; 80. Second limit screw; 90. Limiting baffle; 100. Second spring; 200. Third spring; 300. Product; 3001. Pressed edge; 3002. First right-angle bend; 3003. Second right-angle bend. Detailed Implementation
[0017] The present invention will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of this application more complete and to fully convey the concept of the present application to those skilled in the art.
[0018] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Moreover, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0019] like Figures 3-5As shown in the embodiment of this application, a transformer hardware bending and stamping die includes an upper die and a lower die. The upper die includes an upper die base 1, an upper pad 2, an upper clamping plate 3, a back stripper plate 4, and a stripper plate 5. The lower die includes a lower die plate 6, a lower pad 7, and a lower die base 8.
[0020] The upper clamping plate 3 is fixed with an upper die main push block 9. The lower end of the upper die main push block 9 passes through the back stripping plate 4 and can protrude from the stripping plate 5. The stripping plate 5 is fixed with an upper die bending limiting block 10. The lower end of the upper die bending limiting block 10 protrudes from the stripping plate 5 and is used to press on the top of the pressed dead edge 3001 area of the product 300. The lower template 6 is provided with a lower die auxiliary push block 20, a lower die slider 30, a lower die bending top part 40, and a lower die bending positioning part 50. The lower die auxiliary push block 20 is slidably connected to the lower template 6 and is located below the upper die main push block 9. The lower end of the lower die auxiliary push block 20 is provided with a first inclined wedge surface 201. The lower die bending top part 40 is slidably connected to the lower template 6 and is located below the upper die bending limiting block. Below 10, the lower end of the lower die bending top piece 40 is provided with a second inclined wedge surface 401, and the upper end is provided with a top plate for pressing against the bottom of the pressed dead edge 3001 area of the product 300. The lower die slider 30 is slidably connected to the lower template 6 and is located below the lower die auxiliary push block 20 and the lower die bending top piece 40. The two ends of the lower die slider 30 are respectively provided with a first inclined contact surface 301 and a second inclined contact surface 302 that are adapted to the first inclined wedge surface 201 and the second inclined wedge surface 401. The lower die bending positioning piece 50 is fixed on the lower template 6 and located on one side of the lower die bending top piece 40. The lower die bending positioning piece 50 is provided with a positioning plate 501 for pressing against one side of the pressed dead edge 3001 area of the product 300.
[0021] Specifically, a first through hole 71 is vertically provided on the lower pad 7 below the lower mold auxiliary push block 20, and a second through hole 81 is vertically provided on the lower mold base 8 below the first through hole 71; a lifting and resetting assembly 60 is provided below the lower mold auxiliary push block 20. The lifting and resetting assembly 60 includes a push rod 601, a first spring 602 and a stop screw 603 arranged sequentially from top to bottom. The push rod 601 passes through the first through hole 71, and its upper end abuts against the lower end of the lower mold auxiliary push block 20. The stop screw 603 is threaded to the lower end of the second through hole 81. The first spring 602 passes through the second through hole 81, and one end abuts against the lower end of the push rod 601 and the other end abuts against the upper end of the stop screw 603. When the mold is closed, the upper mold main push block 9 pushes the lower mold auxiliary push block 20 and the ejector rod 601 downwards, at which time the first spring 602 is compressed; when the mold is opened, the upper mold main push block 9 leaves the lower mold auxiliary push block 20, and the first spring 602 returns to its original length due to the elastic force, thereby pushing the ejector rod 601 and the lower mold auxiliary push block 20 upwards to reset.
[0022] Optionally, the side wall of the lower die auxiliary push block 20 is provided with a first shoulder 202; a first limiting screw 70 is threadedly connected to the lower die plate 6 on one side of the first shoulder 202, and the head of the first limiting screw 70 is located above the first shoulder 202. When the lower die auxiliary push block 20 moves upward, the head of the first limiting screw 70 cooperates with the first shoulder 202 to limit the lower die auxiliary push block 20.
[0023] Optionally, the side wall of the lower die bending top piece 40 is provided with a second shoulder 402; a second limiting screw 80 is threadedly connected to the lower die plate 6 on one side of the second shoulder 402, and a limiting baffle 90 is installed on the second limiting screw 80, which is located above the second shoulder 402; a second spring 100 is vertically provided between the second shoulder 402 and the limiting baffle 90, with one end of the second spring 100 abutting against the second shoulder 402 and the other end abutting against the limiting baffle 90. When the lower die slider 30 pushes the lower die bending top piece 40 to slide upward, the second spring 100 is compressed; when the lower die bending top piece 40 loses the pushing force of the lower die slider 30, the second spring 100 returns to its original length due to the elastic force, thereby driving the lower die bending top piece 40 to slide downward and reset.
[0024] Optionally, a third shoulder (not shown in the figure) can be provided on the rear side wall of the lower mold slider 30, and a fixing block (not shown in the figure) spaced apart from and opposite to the third shoulder can be installed on the top of the lower pad 7. A third spring 200 is arranged laterally between the third shoulder and the fixing block, with one end of the third spring 200 abutting against the third shoulder and the other end abutting against the fixing block. When the lower mold slider 30 slides to the left, the third spring 200 is compressed; when the lower mold auxiliary push block 20 slides upward, the third spring 200 returns to its original length due to the elastic force, thereby pushing the lower mold slider 30 to slide to the right and reset.
[0025] The working process of this utility model is as follows:
[0026] When the mold closes, the upper mold moves downward. First, the stripper plate 5 and the lower mold plate 6 come into contact and close, pressing down on the product 300. At the same time, the lower end of the upper mold bending limit block 10 presses down on the top of the dead edge 3001 area of the pre-bent product 300, providing a downward force. Then, the upper mold base 1, the upper pad plate 2, and the clamping plate continue to move downward, thereby driving the upper mold main push block 9 to move downward and pass through the stripper plate 5. The upper mold main push block 9 pushes the lower mold auxiliary push block 20 to slide downward. The lower mold auxiliary push block 20 passes through the first tilting... The wedge surface 201 engages with the first inclined contact surface 301 of the lower die slider 30, thereby pushing the lower die slider 30 to slide to the left. When the lower die slider 30 slides to the left, it engages with the second inclined wedge surface 401 of the lower die bending top member 40 through the second inclined contact surface 302, thereby pushing the lower die bending top member 40 to slide upward. The top plate of the lower die bending top member 40 abuts against the bottom of the pressed dead edge 3001 area of the product 300, providing an upward force, thereby limiting the bending of the top plate and the upper die. Under the combined action of blocks 10, the pressed edge 3001 of product 300 can be bent and formed. At the same time, the upper die bending limit block 10 and the lower die bending positioning part 50 cooperate to also achieve the bending and forming of the first right-angle bending part 3002 and the second right-angle bending part 3003. When the mold opens, the upper die moves upward, the upper die main push block 9 moves away from the lower die auxiliary push block 20, and the lower die auxiliary push block 20 slides upward under the elastic force of the first spring 602 of the lifting and resetting assembly 60, and the lower die bends. Under the elastic force of the second spring 100, the top part 40 slides downward, while the lower die slider 30 slides to the right to reset each part. The downward movement of the lower die bending top part 40 facilitates the feeding equipment to drive the material belt to continue feeding forward for the processing of the second product 300. It should be noted that the positioning plate 501 is set horizontally, and there is a gap between the bottom of the positioning plate 501 and the product 300. After the lower die bending top part 40 moves downward, it can ensure that the material belt moves forward smoothly for feeding.
[0027] It should be understood that all the above embodiments are exemplary and not restrictive. Any modifications, equivalent changes and alterations made by those skilled in the art to the specific embodiments described above under the concept of this utility model shall still fall within the scope of the technical solution of this utility model.
Claims
1. A bending and stamping die for transformer hardware, comprising an upper die and a lower die, wherein the upper die includes an upper die base, an upper pad, an upper clamping plate, a back stripper plate, and a stripper plate, and the lower die includes a lower die template, a lower pad, and a lower die base, characterized in that: The upper clamping plate is fixed with an upper mold main push block. The lower end of the upper mold main push block passes through the back stripping plate and can protrude from the stripping plate. The stripping plate is fixed with an upper mold bending limit block. The lower end of the upper mold bending limit block protrudes from the stripping plate and is used to press on the top of the dead edge area of the product. The lower template is provided with a lower die auxiliary push block, a lower die slider, a lower die bending top piece, and a lower die bending positioning piece. The lower die auxiliary push block is slidably connected to the lower template and located below the upper die main push block. The lower end of the lower die auxiliary push block is provided with a first inclined wedge surface. The lower die bending top piece is slidably connected to the lower template and located below the upper die bending limit block. The lower end of the lower die bending top piece is provided with a second inclined wedge surface, and the upper end is provided with a top plate for pressing against the bottom of the dead edge area of the product. The lower die slider is slidably connected to the lower template and located below the lower die auxiliary push block and the lower die bending top piece. The two ends of the lower die slider are respectively provided with a first inclined contact surface and a second inclined contact surface adapted to the first and second inclined wedge surfaces. The lower die bending positioning piece is fixed to the lower template and located on one side of the lower die bending top piece. The lower die bending positioning piece is provided with a positioning plate for pressing against one side of the dead edge area of the product.
2. The transformer hardware bending and stamping die according to claim 1, characterized in that: The lower pad is provided with a first through hole vertically below the lower die auxiliary push block, and the lower die base is provided with a second through hole vertically below the first through hole; a lifting and resetting assembly is provided below the lower die auxiliary push block, the lifting and resetting assembly includes a push rod, a first spring and a stop screw arranged sequentially from top to bottom, the push rod passes through the first through hole and its upper end abuts against the lower end of the lower die auxiliary push block, the stop screw is threaded to the lower end of the second through hole, and the first spring passes through the second through hole, one end of which abuts against the lower end of the push rod and the other end abuts against the upper end of the stop screw.
3. The transformer hardware bending and stamping die according to claim 2, characterized in that: The side wall of the lower mold auxiliary push block is provided with a first shoulder; a first limiting screw is threadedly connected to the lower mold plate on one side of the first shoulder, and the head of the first limiting screw is located above the first shoulder, which is used to cooperate with the first shoulder to limit the lower mold auxiliary push block.
4. The transformer hardware bending and stamping die according to claim 1, characterized in that: The side wall of the lower die bending top part is provided with a second shoulder; a second limiting screw is threadedly connected to the lower die on one side of the second shoulder, and a limiting baffle is installed on the second limiting screw, and the limiting baffle is located above the second shoulder; a second spring is vertically provided between the second shoulder and the limiting baffle, one end of the second spring abuts against the second shoulder, and the other end abuts against the limiting baffle.