Stamping die set with buffer device
Patent Information
- Application Number
- CN202522260159.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-24
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-24
AI Technical Summary
[0005]本申请的目的是提供一种具备缓冲装置的冲压模架，解决上述相关技术中上下压板冲压时极易因直接撞击而产生较大冲击力，长期容易导致上下压板表面均出现磨损、变形甚至裂纹等损伤的问题
1.冲压作业中，动力气缸带动凸模具冲压时，上压板快速下压，其底面会与位于下压板两侧限位柱上的缓冲柱接触；缓冲柱率先发挥作用，凭借自身特性进行初步缓冲，有效减缓上压板的下冲速度。随着上压板持续下压，缓冲柱进一步压缩变形，将冲击力分散和吸收，极大削减了下压板所承受的冲击力。这不仅能有效避免上、下压板因直接撞击而产生巨大应力，防止压板表面出现磨损、变形、裂纹等损伤，延长压板使用寿命；
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Abstract
Description
Technical Field
[0001] This application relates to the technical field of stamping die technology, and in particular to a stamping die frame with a buffer device. Background Technology
[0002] Currently, among the many processing techniques in manufacturing, stamping is widely used in the production of various parts due to its high efficiency and precision. As the core equipment in stamping, the performance of the stamping die set directly affects the quality and production efficiency of stamped products. With the continuous improvement of industrial requirements for product precision and quality, the design and technology of stamping dies are constantly being innovated to adapt to more complex and refined processing needs. A high-performance stamping die set not only provides stable and reliable support for stamping but also effectively reduces production costs and enhances the company's market competitiveness.
[0003] In related technologies, a stamping die holder includes a processing table, wherein a lower pressure plate is fixedly installed on the upper side of the processing table, and an upper pressure plate is provided directly above the lower pressure plate; a power cylinder with a downward hydraulic rod is fixedly installed on the processing table in the vertical direction, wherein the hydraulic rod of the power cylinder is fixedly connected to the side of the upper pressure plate away from the lower pressure plate, and a punch is fixedly installed on the side of the upper pressure plate near the lower pressure plate, and a die is detachably installed on the side of the lower pressure plate near the upper pressure plate; in daily operation, the lower pressure plate first presses the workpiece onto the die, at which time the power cylinder drives the upper pressure plate to drive the punch to press down and accurately stamp the workpiece, which improves the stamping accuracy to a certain extent.
[0004] In the aforementioned related technologies, during the stamping process of the workpiece, the upper pressure plate moves rapidly downward under the drive of the power cylinder, and is very likely to generate a large impact force due to direct collision with the lower pressure plate. This powerful impact force not only causes the upper and lower pressure plates to bear huge stress, resulting in wear, deformation, and even cracks on the surfaces of the upper and lower pressure plates, but also accelerates the aging and damage of the upper and lower pressure plates due to long-term and frequent impacts, thereby shortening the overall service life of the mold frame, indicating room for improvement. Summary of the Invention
[0005] The purpose of this application is to provide a stamping die frame with a buffer device, which solves the problem in the above-mentioned related technologies that the upper and lower pressure plates are prone to large impact forces due to direct impact during stamping, which can easily lead to wear, deformation or even cracks on the surfaces of the upper and lower pressure plates in the long term.
[0006] The stamping die frame with a buffer device provided in this application adopts the following technical solution: A stamping die frame with a buffer device includes a processing table. A lower pressure plate is fixedly mounted on the upper side of the processing table, and an upper pressure plate is located directly above the lower pressure plate. A power cylinder with a downward hydraulic rod is fixedly mounted on the processing table in a vertical direction. The hydraulic rod of the power cylinder is fixedly connected to the side of the upper pressure plate away from the lower pressure plate. A punch is fixedly mounted on the side of the upper pressure plate near the lower pressure plate, and a die is detachably mounted on the side of the lower pressure plate near the upper pressure plate. Two limiting posts are detachably mounted side by side on both sides of the lower pressure plate on the upper side of the processing table. Buffer posts are fixedly mounted on the sides of both limiting posts near the upper pressure plate. When the power cylinder drives the punch to press towards the die, the buffer posts can contact the bottom surface of the upper pressure plate and reduce the impact force generated on the lower pressure plate.
[0007] By adopting the above technical solution, during the stamping operation, when the power cylinder drives the punch to stamp, the upper pressure plate presses down rapidly, and its bottom surface contacts the buffer posts located on both sides of the lower pressure plate. The buffer posts take effect first, using their own characteristics to provide initial cushioning, effectively slowing down the downward speed of the upper pressure plate. As the upper pressure plate continues to press down, the buffer posts are further compressed and deformed, dispersing and absorbing the impact force, greatly reducing the impact force borne by the lower pressure plate. This not only effectively avoids the huge stress generated by the direct impact between the upper and lower pressure plates, but also prevents wear, deformation, cracks and other damage to the pressure plate surface, extending the service life of the pressure plate.
[0008] Optionally, a spring is fitted on the outer circumferential surface of the buffer post, and one end of the spring is fixedly connected to the end of the limiting post near the buffer post.
[0009] By adopting the above technical solution, when the upper pressure plate is pressed under the drive of the power cylinder, its bottom surface contacts the buffer column, and the spring begins to play its role as the downward stroke progresses. Compared with relying solely on the buffer column for buffering, the addition of the spring can more accurately and effectively disperse the impact energy and reduce the stress on the pressure plate and the mold frame as a whole.
[0010] Optionally, a limiting plate is fixed on the side of both limiting posts near the processing table. A limiting through hole is provided on the limiting plate. A limiting screw hole that coincides with the limiting through hole is provided on the processing table. A limiting bolt that passes through the limiting through hole and is screwed into the limiting screw hole is provided on the processing table.
[0011] By adopting the above technical solution, when the limit post wears or deforms due to long-term use, or when the position of the limit post needs to be adjusted according to different stamping process requirements, the limit post can be easily removed for repair, replacement or reinstallation by simply unscrewing the limit bolt. This greatly improves the versatility and maintenance efficiency of the mold frame, reduces production costs and downtime, and enhances the practicality and market competitiveness of the equipment.
[0012] Optionally, an extension block is fixedly provided on both opposite sides of the concave die, and a fixed groove is provided on the side of the lower pressure plate near the upper pressure plate; the extension block can be inserted into the fixed groove when the convex die presses the workpiece.
[0013] By adopting the above technical solution, this snap-fit structure forms an effective mechanical constraint, which can effectively prevent the die from shifting or shaking in the horizontal direction when subjected to strong stamping force, ensuring that the die and punch always maintain precise alignment, thereby greatly improving the accuracy of stamping and reducing the scrap rate caused by die misalignment.
[0014] Optionally, the side edge of the extension block away from the concave mold is chamfered.
[0015] By adopting the above technical solution, the chamfer plays a good guiding role in the process of the punch pressing the workpiece and the extension block moving into the fixed groove. It can guide the extension block to enter the fixed groove more accurately and easily, avoiding jamming or collision due to inaccurate docking between the two, reducing abnormal stress on the die during the stamping process, and reducing the risk of die damage.
[0016] Optionally, the lower pressure plate is provided with clamping blocks on the side of the upper pressure plate near the concave mold; the clamping blocks can rotate to the top of the extension block when the extension block is inserted into the fixing groove, and the bottom surface of the clamping blocks abuts against the upper side surface of the extension block at this time.
[0017] By adopting the above technical solution, after the extension block is inserted into the fixed groove, the clamping blocks located on both sides of the die are rotated to the top of the extension block, so that the bottom surface of the clamping block and the upper side surface of the extension block are tightly abutted. This design forms a double fixing mechanism. In the horizontal direction, the cooperation between the extension block and the fixed groove prevents the die from shifting. In the vertical direction, the clamping block applies downward pressure to the extension block to ensure that the extension block is firmly in the fixed groove, so that the die will not jump or loosen due to the strong pressure of the upper platen during stamping.
[0018] Optionally, the clamping block has a waist-shaped through hole, the lower pressure plate has a positioning screw hole, and a positioning bolt is provided above the clamping block. The positioning bolt can be inserted into the waist-shaped through hole and then screwed into the positioning screw hole.
[0019] By adopting the above technical solution, the design of the waist-shaped through hole provides a certain adjustment space. When it is necessary to adjust the position of the clamping block according to different specifications of the concave mold or actual production needs, simply loosen the positioning bolt, move the clamping block to the appropriate position within the allowable range of the waist-shaped through hole, and then tighten the positioning bolt.
[0020] Optionally, a storage box with an upward opening is fixed to the side edge of the processing table, and the storage box is used to place the processed workpiece.
[0021] By adopting the above technical solution, during the stamping process, the finished workpiece can be directly placed in the storage box with the opening facing upward at the side edge of the processing table; this design avoids the chaos caused by random placement of workpieces, reduces damage such as collisions and scratches caused by improper placement of workpieces, and helps to ensure the quality and appearance integrity of workpieces.
[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. During stamping operations, when the power cylinder drives the punch to stamp, the upper pressure plate rapidly descends, and its bottom surface contacts the buffer posts located on the limit posts on both sides of the lower pressure plate. The buffer posts act first, using their own characteristics to provide initial cushioning, effectively slowing down the downward speed of the upper pressure plate. As the upper pressure plate continues to descend, the buffer posts further compress and deform, dispersing and absorbing the impact force, greatly reducing the impact force borne by the lower pressure plate. This not only effectively avoids the huge stress generated by the direct impact between the upper and lower pressure plates, but also prevents wear, deformation, cracks, and other damage to the pressure plate surface, extending the service life of the pressure plate; 2. This snap-fit structure forms an effective mechanical constraint, which can effectively prevent the die from shifting or wobbling horizontally when subjected to strong stamping force, ensuring that the die and punch always maintain precise alignment, thereby greatly improving the accuracy of stamping and reducing the scrap rate caused by die misalignment. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a cross-sectional structural diagram illustrating the installation and cooperation of the limiting post and the limiting plate in an embodiment of this application; Figure 3 This is a cross-sectional structural diagram illustrating the installation and cooperation of the upper and lower pressure plates in an embodiment of this application; Figure 4 yes Figure 3 A magnified view of part A in the middle; Figure 5 yes Figure 4 A magnified view of part B in the middle section; Figure 6 This is a partially enlarged schematic diagram illustrating the installation and cooperation of the storage box and the processing table in an embodiment of this application.
[0025] In the diagram, 1. Processing table; 11. Limiting screw hole; 2. Lower pressure plate; 21. Concave mold; 211. Extension block; 2111. Chamfer; 22. Fixing groove; 23. Positioning screw hole; 3. Upper pressure plate; 31. Punch mold; 4. Power cylinder; 5. Limiting post; 51. Buffer post; 511. Spring; 52. Limiting plate; 521. Limiting through hole; 6. Limiting bolt; 7. Clamping block; 71. Waist-shaped through hole; 8. Positioning bolt; 9. Storage box. Detailed Implementation
[0026] The present application will be further described in detail below with reference to all the accompanying drawings.
[0027] Example: Reference Figure 1 A stamping die frame with a buffer device includes a processing table 1, a lower pressure plate 2 is fixedly installed on the upper side of the processing table 1, and an upper pressure plate 3 is provided directly above the lower pressure plate 2; a power cylinder 4 with a downward hydraulic rod is fixedly installed on the processing table 1 along the vertical direction, and the hydraulic rod of the power cylinder 4 is fixedly connected to the side of the upper pressure plate 3 away from the lower pressure plate 2. A punch 31 is fixedly installed on the side of the upper pressure plate 3 near the lower pressure plate 2, and a concave die 21 is detachably installed on the side of the lower pressure plate 2 near the upper pressure plate 3; two limiting posts 5 located on both sides of the lower pressure plate 2 are detachably installed side by side on the upper side of the processing table 1, and each of the two limiting posts 5 has a buffer post 51 integrally formed on the side of the upper pressure plate 3 near the two limiting posts 5, and a spring 511 is sleeved on the outer circumference of the buffer post 51, and one end of the spring 511 is fixedly connected to the end of the limiting post 5 near the buffer post 51. During routine stamping operations, when the upper pressure plate 3 moves rapidly downward to a certain position under the drive of the power cylinder 4, the bottom surface of the upper pressure plate 3 will first contact the buffer column 51. At this time, the buffer column 51 begins to play a preliminary buffering role by virtue of its own elastic deformation ability. As the upper pressure plate 3 continues to press down, the spring 511 is compressed, generating an upward elastic force. This elastic force cancels out the impact force of the upper pressure plate 3 pressing down, thereby more effectively reducing the impact force generated on the lower pressure plate 2 during the pressing down process of the upper pressure plate 3.
[0028] Reference Figure 2 Limiting plates 52 are fixedly installed on the sides of the two limiting posts 5 near the processing table 1. The limiting plates 52 have limiting through holes 521, and the processing table 1 has limiting screw holes 11 that coincide with the limiting through holes 521. The processing table 1 has limiting bolts 6 that pass through the limiting through holes 521 and are screwed into the limiting screw holes 11. In this way, the limiting posts 5 and the processing table 1 can be reliably fixed and can be replaced at any time.
[0029] Reference Figure 3 and Figure 4 The die 21 has an extension block 211 integrally formed on both opposite sides. The side edge of the extension block 211 away from the die 21 is chamfered 2111. The side of the lower pressure plate 2 near the upper pressure plate 3 is provided with a fixed groove 22. When the punch 31 performs a stamping operation on the workpiece, the extension block 211 can be tightly and smoothly inserted into the fixed groove 22 by means of the chamfer 2111, thereby effectively enhancing the stability of the die 21 during the stamping process and preventing it from shifting.
[0030] Reference Figure 3 and Figure 5 The lower pressure plate 2 is provided with clamping blocks 7 on both sides of the concave mold 21 on the side near the upper pressure plate 3; the clamping blocks 7 can rotate to the top of the extension block 211 when the extension block 211 is inserted into the fixing groove 22, and the bottom surface of the clamping blocks 7 at this time abuts against the upper side surface of the extension block 211; the clamping blocks 7 are provided with waist-shaped through holes 71, the lower pressure plate 2 is provided with positioning screw holes 23, and the clamping blocks 7 are provided with positioning bolts 8 on the top; After the clamping block 7 is rotated to the appropriate position, the positioning bolt 8 is inserted into the waist-shaped through hole 71 and then screwed into the positioning screw hole 23. Through the tight fit of the threads, the clamping block 7 is firmly fixed on the lower pressure plate 2, thereby ensuring the reliability and stability of the entire stamping die frame during operation.
[0031] Reference Figure 6 An upward-opening storage box 9 is fixedly installed on the side edge of the processing table 1; the storage box 9 reduces the risk of workpieces being damaged or lost due to random placement.
[0032] The implementation principle of this application embodiment is as follows: During routine stamping operations, when the upper pressure plate 3 moves rapidly downward to a certain position under the drive of the power cylinder 4, the bottom surface of the upper pressure plate 3 will first contact the buffer column 51. At this time, the buffer column 51 begins to play a preliminary buffering role by virtue of its own elastic deformation ability. As the upper pressure plate 3 continues to press down, the spring 511 is compressed, generating an upward elastic force. This elastic force cancels out the impact force of the upper pressure plate 3 pressing down, thereby more effectively reducing the impact force generated on the lower pressure plate 2 during the pressing down process of the upper pressure plate 3.
[0033] Unless otherwise defined, the terms or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar words used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "a" or "one," and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar words mean that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0034] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.
Claims
1. A stamping die frame with a buffer device, comprising a processing table (1), wherein a lower pressure plate (2) is fixedly provided on the upper side of the processing table (1), and an upper pressure plate (3) is provided directly above the lower pressure plate (2); a power cylinder (4) with a downward hydraulic rod is fixedly installed on the processing table (1) along the vertical direction, the hydraulic rod of the power cylinder (4) is fixedly connected to the side of the upper pressure plate (3) away from the lower pressure plate (2), a punch (31) is fixedly provided on the side of the upper pressure plate (3) near the lower pressure plate (2), and a concave die (21) is detachably installed on the side of the lower pressure plate (2) near the upper pressure plate (3); Its features are, The upper side of the processing table (1) is detachably equipped with two limiting posts (5) located on both sides of the lower pressure plate (2). Both limiting posts (5) are fixed with buffer posts (51) on the side of the upper pressure plate (3). When the power cylinder (4) drives the punch (31) to press towards the die (21), the buffer posts (51) can contact the bottom surface of the upper pressure plate (3) and reduce the impact force generated on the lower pressure plate (2).
2. A stamping die frame with a buffer device according to claim 1, characterized in that, A spring (511) is fitted on the outer circumferential surface of the buffer post (51), and one end of the spring (511) is fixedly connected to the end of the limiting post (5) near the buffer post (51).
3. A stamping die frame with a buffer device according to claim 1, characterized in that, Both of the limiting posts (5) are fixed with limiting plates (52) on the side of the machining table (1) near the limiting plate (52). The limiting plate (52) has a limiting through hole (521). The machining table (1) has a limiting screw hole (11) that coincides with the limiting through hole (521). The machining table (1) has a limiting bolt (6) that passes through the limiting through hole (521) and is screwed into the limiting screw hole (11).
4. A stamping die frame with a buffer device according to claim 1, characterized in that, The concave die (21) is fixed with extension blocks (211) on both opposite sides, and the lower pressure plate (2) is provided with a fixed groove (22) on the side near the upper pressure plate (3); the extension blocks (211) can be inserted into the fixed groove (22) when the convex die (31) presses the workpiece.
5. A stamping die frame with a buffer device according to claim 4, characterized in that, The side edge of the extension block (211) away from the concave mold (21) is chamfered (2111).
6. A stamping die frame with a buffer device according to claim 4, characterized in that, The lower pressure plate (2) is provided with clamping blocks (7) on both sides of the concave mold (21) on the side near the upper pressure plate (3); the clamping block (7) can rotate to the top of the extension block (211) when the extension block (211) is inserted into the fixed groove (22), and the bottom surface of the clamping block (7) at this time abuts against the upper side surface of the extension block (211).
7. A stamping die frame with a buffer device according to claim 6, characterized in that, The clamping block (7) has a waist-shaped through hole (71), the lower pressure plate (2) has a positioning screw hole (23), and a positioning bolt (8) is provided above the clamping block (7). The positioning bolt (8) can be inserted into the waist-shaped through hole (71) and then screwed into the positioning screw hole (23).
8. A stamping die frame with a buffer device according to claim 1, characterized in that, The processing table (1) has an upward-opening storage box (9) fixed on the side edge, which is used to place the processed workpiece.