Automatic stamping die capable of prolonging service life
By designing the buffer structure and support system in the automatic stamping mold, the wear problem of stamping parts is solved, and the service life of the mold is extended and the stability of the stamping process is improved.
Patent Information
- Application Number
- CN202411873988.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-02-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing automatic stamping molds have shortened the service life of the mold due to friction and pressure in the stamping part.
An automatic stamping mold including a buffer structure, a support rod, a connecting rod, a connecting frame and a guide rod is designed. Through the synergy of these structures, smooth sliding and cushioning of the upper mold is achieved, reducing the wear of the impact force on the mold.
Effectively absorb and disperse impact forces, significantly reduce wear of the upper mold, extend the service life of the entire device, and improve the stability and production efficiency of the stamping process.
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Figure CN119426445A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of automatic stamping dies, and in particular relates to an automatic stamping die with improved service life. Background Art
[0002] Automatic stamping dies are an indispensable and important tool in modern manufacturing. They use the power of a press to apply pressure to metal or non-metal sheets through a die to cause them to separate or plastically deform, thereby processing parts of the desired shape and size.
[0003] In a Chinese patent with publication number CN217528930U, an automatic stamping die with a long service life is mentioned, which relates to the field of stamping die technology, including a lower support seat, a lower die seat movably mounted on the top of the lower support seat, an upper support seat movably mounted on the top of the lower support seat, a cleaning device movably mounted inside the upper support seat, and an upper die seat fixedly mounted on the bottom of the cleaning device. In the above scheme, the connecting seat is fixedly mounted inside the engaging groove, and the outer guide column is fixedly mounted inside the guide column hole. During the operation of the device, the workpiece is placed on the top of the lower template, and the upper die seat is pressed down so that the upper die seat contacts the surface of the workpiece while the spring assembly is compressed, and the fan assembly is started. Under the action of the hydraulic lifting rod, the upper die seat descends while the dust and sand and gravel falling on the surface of the workpiece are sucked in through the dust suction port and discharged from the exhaust port through the cleaning box, so as to avoid damage to the workpiece and the stamping die during stamping, improve the quality of the workpiece stamping, and make the product more ideal.
[0004] In the process of using the automatic stamping die, since the upper die needs to perform a downward dive, this movement characteristic makes the stamping part inevitably bear greater friction and pressure, which in turn causes a certain degree of wear. This continuous wear not only accelerates the wear rate of the upper die, but also significantly shortens the service life of the entire device. Summary of the invention
[0005] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide an automatic stamping die with a prolonged service life, so as to solve the problem that the continuous wear of the stamping part of the upper die accelerates the wear rate of the upper die.
[0006] To achieve the above object, the present invention provides the following technical solutions:
[0007] An automatic stamping die with improved service life, comprising:
[0008] Control box;
[0009] A support structure is installed at the middle of the top of the control box, two support rods are fixedly connected to both sides of the top of the control box, and a top plate is installed at the tops of the four support rods, a driver is installed at the middle of the top of the top plate, the output end of the driver passes through the middle of the bottom of the top plate and extends to below it, an upper mold is installed at the output end of the driver, connecting rods are provided on both sides of the bottom of the upper mold, and the bottom ends of the two connecting rods are fixedly connected to a connecting frame, and the bottom end of the connecting frame is fixedly connected to two guide rods;
[0010] The support structure includes a buffer structure, a support seat, a fixed rod, a lower template, a material guide structure, a connecting groove and a supporting arc plate. There are two support seats, and the two support seats are respectively installed on both sides of the bottom end of the buffer structure. There are four fixed rods, and the four fixed rods are movably inserted and connected in the buffer structure. The lower template is fixedly connected to the top ends of the four fixed rods. The connecting groove is opened on one side of the top end of the buffer structure. The supporting arc plate is fixedly connected to one side of the inner wall of the connecting groove. The material guide structure is movably inserted in the connecting groove, and the support seats are all installed on the top end of the control box.
[0011] Preferably, outer surfaces of two of the support rods are commonly and fixedly connected with a material guide frame, and the upper mold is movably connected to the outer surfaces of the four support rods.
[0012] Preferably, the buffer structure includes a displacement structure and a fixed plate, the bottom end of the displacement structure is fixedly connected to a plurality of pads, the middle part of the bottom end of the pads is fixedly connected to a buffer rod, the outer surfaces of the buffer rods are sleeved with buffer springs, the fixed plate is movably connected to the outer surfaces of the plurality of buffer rods, and the fixed plate is installed at the top ends of two support seats.
[0013] Preferably, the displacement structure includes a buffer plate, a sliding plate and a through groove, the through groove is opened in the middle part of the top of the buffer plate, two connecting columns are fixedly connected on both sides of the top of the buffer plate, two sliding plates are provided, and the two sliding plates are respectively fixedly connected to the tops of the two connecting columns on both sides, limiting grooves are opened on both sides of the top of the sliding plate, four through holes are opened at equal distances on the top of the buffer plate, and the buffer plate is fixedly connected to the pad block.
[0014] Preferably, the sliding plate is movably connected to the outer surfaces of the two support rods, and the limiting groove is movably connected to the guide rod.
[0015] Preferably, the bottom ends of the four fixing rods are movably passed through the four through holes and are fixedly connected to the top end of the buffer structure.
[0016] Preferably, the material guiding structure includes an electric telescopic rod, a pushing column, a groove, a movable column, a pushing plate, a connecting seat and a cylinder, the pushing column is fixedly connected to the top end of the electric telescopic rod, the groove is opened in the middle of the top end of the pushing column, the movable column is movably connected in the groove, two connecting seats are provided, and the two connecting seats are respectively fixedly connected to the outer surface of one end of the pushing column and one side of the bottom end of the pushing plate, the cylinder is movably connected between the two connecting seats, and the pushing plate is movably connected in the connecting groove.
[0017] Preferably, the electric telescopic rod is movably inserted and connected in the through groove, and the pushing column is movably inserted and connected in the supporting arc plate.
[0018] Preferably, the bottom end of the electric telescopic rod passes through the fixing plate and is mounted on the top end of the control box.
[0019] Preferably, the buffer spring is arranged between the cushion block and the fixing plate.
[0020] Compared with the prior art, the present invention has the following beneficial effects:
[0021] (1) By setting up a buffer structure, support rods, connecting rods, connecting frames and guide rods, when the driver is started, the upper mold slides smoothly along the outer surfaces of the four stable support rods. As the driver continues to move downward, it not only drives the connecting rods to move, but also causes the connecting frame to move through the traction of the connecting rods, so that the guide rods slide smoothly inside the buffer structure and push the top two sides of the buffer structure at the same time. The top two sides of the buffer structure are designed with efficient buffer mechanisms, which can effectively absorb and disperse the impact force from the upper mold, thereby achieving an excellent buffering effect. At the same time, the two sides of the buffer structure also maintain stable sliding on the outer surfaces of the support rods, thereby enhancing the stability of the entire structure and further improving the buffering effect. The impact force in the automatic stamping process is significantly buffered and dispersed, which greatly reduces the wear on the upper mold, thereby extending the service life of the entire device.
[0022] (2) By setting up an electric telescopic rod, a pushing column, a movable column, a pushing plate and a cylinder, the electric telescopic rod is started, and its output end quickly extends upward, pulling the pushing column to move. The pushing column pushes the pushing plate upward through the linkage action of the movable column, thereby driving the workpiece to rise together. Subsequently, the cylinder is started to make the pushing plate tilt itself, so that the workpiece can slide smoothly along its inclined surface to the guide rack, thereby realizing an automated unloading process. The entire unloading process is efficient and smooth, which greatly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 A perspective view of the present invention;
[0024] Figure 2 is a three-dimensional diagram of the support structure of the present invention;
[0025] Figure 3 A three-dimensional diagram of the lower template of the present invention;
[0026] Figure 4 is a three-dimensional diagram of the buffer structure of the present invention;
[0027] Figure 5 is a stereogram of the displacement structure of the present invention;
[0028] Figure 6 It is a three-dimensional diagram of the material guiding structure of the present invention;
[0029] Figure 7 A bottom view of the push plate of the present invention;
[0030] In the figure: 1. control box; 2. support rod; 3. top plate; 4. driver; 5. upper mold; 6. connecting rod; 7. connecting frame; 8. guide rod; 9. supporting structure; 10. material guide frame; 91. buffer structure; 92. support seat; 93. fixed rod; 94. lower template; 95. material guide structure; 96. connecting groove; 97. supporting arc plate; 911. displacement structure; 912. cushion block; 913. buffer rod; 914. buffer spring; 915. fixed plate; 111. buffer plate; 112. connecting column; 113. sliding plate; 114. limiting groove; 115. through groove; 116. through hole; 951. electric telescopic rod; 952. pushing column; 953. groove; 954. movable column; 955. pushing plate; 956. connecting seat; 957. cylinder. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0032] Embodiment 1:
[0033] See also Figure 1 - Figure 7 As shown, an automatic stamping die with improved service life comprises:
[0034] Control box 1;
[0035] A support structure 9 is installed at the middle of the top of the control box 1, two support rods 2 are fixedly connected to both sides of the top of the control box 1, and a top plate 3 is installed on the tops of the four support rods 2. A driver 4 is installed at the middle of the top of the top plate 3. The output end of the driver 4 passes through the middle of the bottom of the top plate 3 and extends to the bottom thereof. An upper mold 5 is installed at the output end of the driver 4. Connecting rods 6 are arranged on both sides of the bottom of the upper mold 5, and the bottom ends of the two connecting rods 6 are fixedly connected to a connecting frame 7, and the bottom ends of the connecting frame 7 are fixedly connected to two guide rods 8;
[0036] The support structure 9 includes a buffer structure 91, a support seat 92, a fixed rod 93, a lower template 94, a material guide structure 95, a connecting groove 96 and a supporting arc plate 97. Two support seats 92 are provided, and the two support seats 92 are respectively installed on both sides of the bottom end of the buffer structure 91. Four fixed rods 93 are provided, and the four fixed rods 93 are movably inserted and connected in the buffer structure 91. The lower template 94 is fixedly connected to the top of the four fixed rods 93. The connecting groove 96 is opened on one side of the top of the buffer structure 91. The supporting arc plate 97 is fixedly connected to one side of the inner wall of the connecting groove 96. The material guide structure 95 is movably inserted in the connecting groove 96. The support seats 92 are all installed at the top of the control box 1.
[0037] As can be seen from the above, when the driver 4 is started, its output end immediately generates a driving force, which acts on the upper mold 5 closely connected thereto, so that the upper mold 5 slides smoothly and accurately along the outer surface of the four stable support rods 2. As the driver 4 continues to move downward, it not only drives the connecting rod 6 fixedly connected thereto to move, but also causes the connecting frame 7 to move accordingly through the traction of the connecting rod 6. The movement of the connecting frame 7 further drives the guide rod 8 firmly connected thereto to move downward, and the guide rod 8 slides smoothly inside the buffer structure 91.
[0038] During this process, the guide rod 8 not only guides the movement of the connecting frame 7, but also pushes the top two sides of the buffer structure 91 through its downward pressing action. The top two sides of the buffer structure 91 are designed with an efficient buffer mechanism, which can effectively absorb and disperse the impact force from the upper mold 5, thereby achieving an excellent buffering effect. At the same time, the two sides of the buffer structure 91 also maintain stable sliding on the outer surface of the support rod 2. This design not only enhances the stability of the entire structure, but also further enhances the buffering effect. Through this series of precise and coordinated actions, the impact force in the automatic stamping process is significantly buffered and dispersed, which greatly reduces the wear on the upper mold 5, thereby extending the service life of the entire device.
[0039] For details about the above, refer to Figure 1 and Figure 4As shown, the outer surfaces of the two support rods 2 are fixedly connected with the guide frame 10, and the upper mold 5 is movably connected to the outer surfaces of the four support rods 2;
[0040] The buffer structure 91 includes a displacement structure 911 and a fixed plate 915. The bottom end of the displacement structure 911 is fixedly connected to a plurality of cushion blocks 912. The middle of the bottom end of the cushion blocks 912 is fixedly connected to a buffer rod 913. The outer surfaces of the buffer rods 913 are sleeved with buffer springs 914. The fixed plate 915 is movably connected to the outer surfaces of the plurality of buffer rods 913. The fixed plate 915 is installed at the top ends of the two support seats 92.
[0041] As can be seen from the above, the displacement structure 911, through its fixedly connected pad 912, acts as an intermediary force to push the buffer rod 913 to slide smoothly and orderly inside the solid fixed plate 915. This sliding action causes the buffer spring 914 to be evenly and moderately squeezed, and then shrink. The elastic deformation of the buffer spring 914 effectively absorbs the huge impact force generated during the automatic stamping process and plays a key buffering role. This process not only significantly reduces the direct impact and wear on the upper mold 5, but also improves the stability and durability of the entire stamping system, ensuring high-precision processing and long-term service life of the mold and workpiece.
[0042] Preferably, the bottom ends of the four fixing rods 93 are movably passed through the four through holes 116 and are fixedly connected to one end of the buffer structure 91;
[0043] The buffer spring 914 is disposed between the cushion block 912 and the fixing plate 915 .
[0044] It can be seen from the above that the use of the buffer spring 914 improves stability.
[0045] Embodiment 2:
[0046] refer to Figure 5 As shown, the displacement structure 911 includes a buffer plate 111, a sliding plate 113 and a through slot 115. The through slot 115 is opened in the middle of the top of the buffer plate 111. Two connecting columns 112 are fixedly connected to both sides of the top of the buffer plate 111. Two sliding plates 113 are provided, and the two sliding plates 113 are respectively fixedly connected to the tops of the two connecting columns 112 on both sides. Limiting grooves 114 are opened on both sides of the top of the sliding plate 113. Four through holes 116 are opened at equal distances at the top of the buffer plate 111. The buffer plate 111 is fixedly connected to the cushion block 912.
[0047] As can be seen from the above, as the connecting frame 7 moves downward steadily, it drives the guide rod 8 closely connected thereto to slide smoothly downward in the precise limit groove 114. In this process, the guide rod 8 not only guides the movement trajectory of the connecting frame 7, but also ensures the stability and accuracy of the entire structure. When the connecting frame 7 continues to move downward until it is in close contact with the sliding plate 113, the sliding plate 113 is prompted to move downward smoothly along the support rod 2. The movement of the sliding plate 113 drives the connecting column 112 firmly connected thereto to move downward synchronously. The connecting column 112 is a key component connecting the sliding plate 113 and the buffer plate 111. Its movement directly triggers the downward movement of the buffer plate 111. This series of precise actions not only reflects the coordination and efficiency of the internal structure of the device, but also ensures that the buffer plate 111 can accurately respond to and absorb the pressure from the upper mold 5, thereby effectively protecting the mold and workpiece and extending the service life.
[0048] Preferably, the sliding plate 113 is movably connected to the outer surfaces of the two support rods 2, and the limiting groove 114 is movably connected to the guide rod 8.
[0049] As can be seen from the above, in order to improve the stability of the sliding plate 113, it is movably inserted into the outer surface of the support rod 2, which not only utilizes the strength and stability of the support rod 2 to support the sliding plate 113, but also ensures the stability and reliability of the sliding plate 113 during movement. At the same time, in order to further enhance the stability of the structure and reduce wear, the guide rod 8 is flexibly inserted into the carefully designed limit groove 114, which effectively limits the guide rod 8, which not only improves the accuracy of its motion trajectory, but also significantly reduces the wear and damage caused by shaking or misalignment, thereby further extending the service life of the entire device.
[0050] Embodiment three:
[0051] refer to Figure 6 and Figure 7 As shown, the material guiding structure 95 includes an electric telescopic rod 951, a pushing column 952, a groove 953, a movable column 954, a pushing plate 955, a connecting seat 956 and a cylinder 957. The pushing column 952 is fixedly connected to the top of the electric telescopic rod 951, the groove 953 is opened in the middle of the top of the pushing column 952, the movable column 954 is movably connected in the groove 953, two connecting seats 956 are provided, and the two connecting seats 956 are respectively fixedly connected to the outer surface of one end of the pushing column 952 and one side of the bottom end of the pushing plate 955, the cylinder 957 is movably connected between the two connecting seats 956, and the pushing plate 955 is movably connected in the connecting groove 96.
[0052] As can be seen from the above, when the electric telescopic rod 951 is started, the output end of the electric telescopic rod 951 extends upward and drives the push column 952 fixedly connected thereto to move, and the push column 952 drives the push plate 955 to move upward through the movable column 954, thereby driving the workpiece to move upward through the push plate 955, and the cylinder 957 is started. The output end of the cylinder 957 contracts and drives the connecting seat 956 movably connected thereto to move, and the connecting seat 956 drives the push plate 955 fixedly connected thereto to move, and the push plate 955 drives the movable column 954 fixedly connected thereto to rotate in the groove 953, thereby causing the push plate 955 to tilt, so that the workpiece slides onto the guide rack 10 according to the inclined surface, and is automatically unloaded.
[0053] Preferably, the electric telescopic rod 951 is movably inserted and connected in the through groove 115, and the push column 952 is movably inserted and connected in the supporting arc plate 97;
[0054] The bottom end of the electric telescopic rod 951 passes through the fixing plate 915 and is installed on the top end of the control box 1 .
[0055] As can be seen from the above, movably inserting the through groove 115 into the outer surface of the electric telescopic rod 951 not only provides sufficient moving space for the buffer plate 111, but also ensures its stability and flexibility during the sliding process.
[0056] Further, the present invention is designed and applied to automatic stamping equipment, and the driver 4 is started. The output end of the driver 4 pushes the upper mold 5 fixedly connected thereto, so that the upper mold 5 slides on the outer surface of the four support rods 2. As the driver 4 gradually moves downward, it not only drives the connecting rod 6 fixedly connected thereto to be displaced, but also pulls the connecting frame 7 to move through the connecting rod 6. The movement of the connecting frame 7 further causes the guide rod 8 closely connected thereto to slide smoothly downward in the limiting groove 114. When the connecting frame 7 continues to move downward until it is tightly fitted with the sliding plate 113, it pushes the sliding plate 113 to move downward together. The displacement of the sliding plate 113 drives the connecting column 112 fixedly connected thereto to move downward, and the connecting column 112 further drives the buffer plate 111 to move downward. At this time, the buffer plate 111 pushes the buffer rod 913 to slide inside the fixed plate 915 through the pad 912 thereon, causing the buffer spring 914 to be compressed and gradually contracted. This process effectively buffers the force generated by the automatic stamping, significantly reduces the wear of the upper mold 5, and thus extends the service life of the entire device.
[0057] After the mold stamping operation is completed, the electric telescopic rod 951 is started, and its output end quickly extends upward, and pulls the pushing column 952 firmly connected to it to move. The pushing column 952 pushes the pushing plate 955 upward through the linkage action of the movable column 954, thereby driving the workpiece to rise together. Subsequently, the cylinder 957 is started, and its output end quickly contracts and pulls the connecting seat 956 movably connected to it to move. The displacement of the connecting seat 956 drives the movement of the pushing plate 955, and the pushing plate 955 realizes its own inclination through the flexible rotation of the movable column 954 in the groove 953. This inclination design enables the workpiece to slide smoothly along its inclined surface to the guide rack 10, thereby realizing an automated unloading process. The entire unloading process is efficient and smooth, which greatly improves production efficiency.
[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An automatic stamping die with improved service life, characterized in that: include: Control box (1); A support structure (9) is installed at the middle of the top of the control box (1), two support rods (2) are fixedly connected to both sides of the top of the control box (1), and a top plate (3) is installed at the top of the four support rods (2), a driver (4) is installed at the middle of the top of the top plate (3), the output end of the driver (4) passes through the middle of the bottom of the top plate (3) and extends to the bottom, an upper mold (5) is installed at the output end of the driver (4), connecting rods (6) are arranged on both sides of the bottom of the upper mold (5), and the bottom ends of the two connecting rods (6) are fixedly connected to a connecting frame (7), and the bottom end of the connecting frame (7) is fixedly connected to two guide rods (8); The support structure (9) comprises a buffer structure (91), a support seat (92), a fixed rod (93), a lower template (94), a material guide structure (95), a connecting groove (96) and a supporting arc plate (97). Two support seats (92) are provided, and the two support seats (92) are respectively installed on both sides of the bottom end of the buffer structure (91). Four fixed rods (93) are provided, and the four fixed rods (93) are all movably inserted and connected in the buffer structure (91). The lower template (94) is fixedly connected to the top ends of the four fixed rods (93). The connecting groove (96) is provided on one side of the top end of the buffer structure (91). The supporting arc plate (97) is fixedly connected to one side of the inner wall of the connecting groove (96). The material guide structure (95) is movably inserted in the connecting groove (96). The support seats (92) are all installed on the top end of the control box (1).
2. The automatic stamping die with increased service life according to claim 1, characterized in that: The outer surfaces of two of the support rods (2) are commonly and fixedly connected to a material guide frame (10), and the upper mold (5) is movably connected to the outer surfaces of the four support rods (2).
3. The automatic stamping die with improved service life according to claim 1, characterized in that: The buffer structure (91) comprises a displacement structure (911) and a fixed plate (915); the bottom end of the displacement structure (911) is fixedly connected to a plurality of cushion blocks (912); the middle of the bottom end of the cushion blocks (912) is fixedly connected to a buffer rod (913); the outer surface of the buffer rod (913) is sleeved with a buffer spring (914); the fixed plate (915) is movably connected to the outer surfaces of the plurality of buffer rods (913); and the fixed plate (915) is installed at the top ends of the two support seats (92).
4. The automatic stamping die with improved service life according to claim 3, characterized in that: The displacement structure (911) comprises a buffer plate (111), a sliding plate (113) and a through groove (115); the through groove (115) is provided in the middle of the top end of the buffer plate (111); two connecting columns (112) are fixedly connected to both sides of the top end of the buffer plate (111); two sliding plates (113) are provided, and the two sliding plates (113) are respectively fixedly connected to the top ends of the two connecting columns (112) on both sides; limiting grooves (114) are provided on both sides of the top end of the sliding plate (113); four through holes (116) are equidistantly provided at the top end of the buffer plate (111); and the buffer plate (111) is fixedly connected to the cushion block (912).
5. The automatic stamping die with increased service life according to claim 4, characterized in that: The sliding plate (113) is movably connected to the outer surfaces of the two support rods (2), and the limiting groove (114) is movably connected to the guide rod (8).
6. The automatic stamping die with improved service life according to claim 1, characterized in that: The bottom ends of the four fixing rods (93) are movably inserted through the four through holes (116) and are fixedly connected to the top end of the buffer structure (91).
7. The automatic stamping die with increased service life according to claim 1, characterized in that: The material guiding structure (95) comprises an electric telescopic rod (951), a pushing column (952), a groove (953), a movable column (954), a pushing plate (955), a connecting seat (956) and a cylinder (957); the pushing column (952) is fixedly connected to the top end of the electric telescopic rod (951); the groove (953) is arranged in the middle of the top end of the pushing column (952); the movable column (954) is movably connected in the groove (953); two connecting seats (956) are provided, and the two connecting seats (956) are respectively fixedly connected to the outer surface of one end of the pushing column (952) and one side of the bottom end of the pushing plate (955); the cylinder (957) is movably connected between the two connecting seats (956); and the pushing plate (955) is movably connected in the connecting groove (96).
8. The automatic stamping die with increased service life according to claim 7, characterized in that: The electric telescopic rod (951) is movably inserted and connected in the through groove (115), and the pushing column (952) is movably inserted and connected in the supporting arc plate (97).
9. The automatic stamping die with increased service life according to claim 7, characterized in that: The bottom end of the electric telescopic rod (951) passes through the fixing plate (915) and is mounted on the top end of the control box (1).
10. The automatic stamping die with improved service life according to claim 3, characterized in that: The buffer spring (914) is arranged between the cushion block (912) and the fixing plate (915).
Citation Information
Patent Citations
Automatic stamping die with long service life
CN217528930U