Buffering and limiting structure of ascending component
By designing a buffer limit structure in the stamping mold, the movement rate of the rising parts is controlled, the problem of jumping of the parts during stamping return is solved, the grasping accuracy of the mechanical clamps is improved and the service life of the equipment is extended.
Patent Information
- Application Number
- CN202422364792.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-25
AI Technical Summary
In stamping molds, the inertia of the rising component will turn to the piece during stamping return, causing the piece to jump and affecting the grasping accuracy of the mechanical clamps.
A buffer limit structure for the rising component is designed. By setting a buffer structure on the base and the pressing core, the movement rate of the top plate and the pressing core is controlled by using the resilience of the buffer pad and the spring to avoid inertia transfer to the machine.
Effectively avoid the jump of the parts, improve the grasping accuracy of mechanical clamps, and extend the service life of the equipment.
Smart Images
Figure CN223234889U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of stamping dies, in particular to a buffering and limiting structure of a rising component. Background Art
[0002] In a stamping die, the upper die presses the lower die back and forth under the action of the stamping mechanism, thereby stamping and forming the workpiece placed on the lower die. In order to reduce the impact of the upper die on the lower die, some stamping dies will set the material plate used to place the workpiece to float up and down through the ejector pins. The sheet material and workpiece supported inside the mold are collectively referred to as rising parts.
[0003] During the return stroke, the rising component generates inertia, which is transferred to the workpiece, causing it to bounce and deflect. This prevents the mechanical clamp from accurately grasping the workpiece. To address this, we designed a buffering and limiting structure for the rising component. Utility Model Content
[0004] In order to solve the technical problem that the rising component generates inertia during the return stroke of the stamping, and the inertia at this time is transferred to the workpiece, thereby causing the workpiece to jump, the utility model provides a buffer limit structure for the rising component.
[0005] The utility model adopts the following technical solution: a buffer limit structure of a rising component, comprising a base, a concave template installed above the base, four groups of buffer structures 1 distributed in a rectangular structure are arranged above the base, and a top material plate is connected above the four groups of buffer structures 1;
[0006] A lifting plate is provided above the base for sliding up and down, and four groups of buffer structures 2 with rectangular structures are provided below the lifting plate for sliding up and down. A pressing core is connected below the four groups of buffer structures 2 for sliding up and down, and an abutting mold is provided below the lifting plate.
[0007] As a further improvement of the above-mentioned solution, the buffer structure 1 includes a guide column connected to the corner below the ejection plate, a lifting spring is sleeved on the guide column, a gasket 1 is installed at the bottom end of the guide column, a buffer pad 1 is provided on the gasket 1, and the buffer pad 1 is placed inside the base, and the lifting spring is used to abut against the top of the base. The lifting spring can move the ejection plate upward to lift the workpiece.
[0008] As a further improvement of the above scheme, four buffer grooves with a rectangular structure are provided under the base, and the cross-section of the buffer groove is a convex structure. The lower end of the guide column is placed in the buffer groove, and the gasket 1 and the buffer pad 1 are both slid into the buffer groove. When the upper lifting plate is in the stamping return stroke, the ejection plate moves upward under the action of the lifting spring. When it is out of contact with the pressing core, the buffer pad 1 is in contact with the top of the buffer groove. The buffer pad 1 itself has good resilience, which can make the guide column move upward at a lower rate, thereby buffering the ejection plate and the workpiece above.
[0009] As a further improvement of the above scheme, the buffer structure 2 includes a hanging rod that is slidably sleeved on the lifting plate, a limiting ring is provided above the hanging rod, a gasket 2 is provided at the lower end of the hanging rod, and a buffer pad 2 is provided on the gasket 2. Both buffer pad 1 and buffer pad 2 are made of polyurethane.
[0010] As a further improvement of the above scheme, four moving grooves with rectangular structure distribution are opened under the pressing core, and the cross-section of the moving groove is a convex structure. The lower end of the hanging rod is placed in the moving groove, and the gasket 2 and the buffer pad 2 are both slid up and down and placed in the moving groove. When the lifting plate is in the punching return stroke, the pressing core will not move up directly with the lifting plate. There is a certain time difference, and in the process of moving up, the buffer pad 2 will first contact with the top of the moving groove and compress the buffer, and then move upward with it, so that its rising rate is reduced, thereby buffering it.
[0011] A buffer spring is sleeved on the hanging rod, and the upper and lower ends of the buffer spring are respectively in contact with the bottom of the lifting plate and the top of the pressing core. When the pressing core contacts the top plate, the lifting plate has a certain buffer when moving downward, avoiding direct collision between the pressing core and the abutting die, thereby delaying the service life.
[0012] As a further improvement of the above solution, when the limiting ring contacts the upper surface of the lifting plate, the second gasket is placed inside the movable groove, and the bottom of the second gasket protrudes from the bottom of the pressing core by a distance of 3-9 mm, which is convenient for subsequent buffering.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] 1. The utility model provides a buffer structure 1 on the base. The ejector plate moves upward under the action of the lifting spring. When it is out of contact with the pressing core, the buffer pad 1 contacts the top of the buffer groove. The buffer pad 1 itself has good resilience, which can reduce the upward movement rate of the guide column, thereby buffering the ejector plate and the workpiece above, avoiding inertia generated in the rising process during the return stroke of the punching, preventing the inertia from being transferred to the workpiece, preventing the workpiece from jumping, and improving the grasping accuracy of the mechanical clamp;
[0015] 2. By setting a second buffer structure on the pressing core, and the pressing core is connected to the lifting plate through the buffer structure, it can be buffered during the return process. The bottom of the second gasket protrudes from the bottom of the pressing core by a distance of 3-9mm. The second gasket and the second buffer pad can press the workpiece and slowly rise it, thereby preventing it from jumping upward due to excessive rising speed. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the overall structure of a buffer limiting structure of a rising component provided by the utility model;
[0017] Figure 2 for Figure 1 Isometric drawing of
[0018] Figure 3 for Figure 1 Front view of ;
[0019] Figure 4 for Figure 3 Schematic diagram of the cross section at AA in the middle.
[0020] Description of main symbols:
[0021] 1. Base; 11. Buffer groove; 2. Buffer structure 1; 21. Guide column; 22. Lifting spring; 23. Buffer pad 1; 24. Gasket 1; 3. Ejector plate; 4. Lifting plate; 5. Pressing core; 51. Moving groove; 6. Buffer structure 2; 61. Hanging rod; 62. Limiting ring; 63. Gasket 2; 64. Buffer spring; 65. Buffer pad 2; 7. Concave mold plate; 8. Abutment mold. DETAILED DESCRIPTION
[0022] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0023] Example:
[0024] Please combine Figure 1-Figure 4 The buffer limit structure of a rising component of this embodiment includes a base 1, a concave template 7 is installed above the base 1, four groups of buffer structures 2 distributed in a rectangular structure are arranged above the base 1, and a top plate 3 is connected above the four groups of buffer structures 2;
[0025] A lifting plate 4 is provided above the base 1 for sliding up and down, and four groups of buffer structures 6 with rectangular structures are provided below the lifting plate 4 for sliding up and down. A pressing core 5 is connected below the four groups of buffer structures 6 for sliding up and down, and an abutting mold 8 is provided below the lifting plate 4.
[0026] The buffer structure 2 includes a guide column 21 connected to the corner below the ejection plate 3, a lifting spring 22 is sleeved on the guide column 21, a gasket 24 is installed at the bottom end of the guide column 21, a buffer pad 23 is provided on the gasket 24, the buffer pad 23 is placed inside the base 1, and the lifting spring 22 is used to abut against the top of the base 1. The lifting spring 22 can move the ejection plate 3 upward to lift the workpiece.
[0027] Four buffer grooves 11 with a rectangular structure are provided under the base 1. The cross-section of the buffer groove 11 is a convex structure. The lower end of the guide column 21 is placed in the buffer groove 11, and the gasket 24 and the buffer pad 23 are both slidably placed in the buffer groove 11. When the upper lifting plate 4 is in the stamping return stroke, the ejection plate 3 moves upward under the action of the lifting spring 22. When it is out of contact with the pressing core 5, the buffer pad 23 is in contact with the top of the buffer groove 11. The buffer pad 23 itself has good resilience, which can make the guide column 21 move upward at a lower rate, thereby buffering the ejection plate 3 and the workpiece above.
[0028] The buffer structure 2 6 includes a hanging rod 61 that is slidably sleeved on the lifting plate 4 up and down, a limiting ring 62 is provided above the hanging rod 61, a gasket 2 63 is provided at the lower end of the hanging rod 61, and a buffer pad 2 65 is provided on the gasket 2 63. The buffer pad 1 23 and the buffer pad 2 65 are both made of polyurethane.
[0029] Four rectangular movable grooves 51 are provided below the pressing core 5. The cross section of the movable groove 51 is a convex structure. The lower end of the hanging rod 61 is placed in the movable groove 51, and the gasket 63 and the buffer pad 65 are both slid up and down in the movable groove 51. When the lifting plate 4 is in the punching return stroke, the pressing core 5 will not move up directly with the lifting plate 4. There is a certain time difference, and in the process of moving up, the buffer pad 65 will first contact with the top of the movable groove 51 and compress and buffer it, and then move upward with it, so that its rising rate is reduced, thereby buffering it.
[0030] A buffer spring 64 is sleeved on the hanging rod 61. The upper and lower ends of the buffer spring 64 are respectively in contact with the bottom of the lifting plate 4 and the top of the pressure core 5. When the pressure core contacts the ejection plate 3, the lifting plate 4 has a certain buffer when moving downward, avoiding direct collision between the pressure core 5 and the abutting die 8, thereby delaying the service life.
[0031] When the limiting ring 62 contacts the upper surface of the lifting plate 4, the second gasket 63 is placed inside the moving groove 51, and the bottom of the second gasket 63 protrudes from the bottom of the pressing core 5 by a distance of 3-9 mm, which is convenient for subsequent buffering.
[0032] The implementation principle of the buffer limit structure of a rising component in the embodiment of the present application is as follows: in actual use, the upper part of the lifting plate 4 is connected to an external hydraulic cylinder for moving up and down and performing stamping;
[0033] The workpiece is placed on the ejector plate 3, and the lifting plate 4 moves downward under the action of the hydraulic cylinder, and the pressing core 5 will move downward together. The pressing core 5 will first contact the upper surface of the ejector plate 3, and then the two will slowly move downward together until the lower surface of the ejector plate 3 contacts the concave plate 7. After that, the lifting plate 4 continues to move downward until the abutting die 8 contacts the ejector plate 3, and then it can be stamped and formed;
[0034] After stamping, the lifting plate 4 moves upward. During the upward movement of the lifting plate 4, the ejector plate 3 and the pressure core move upward together. The ejector plate 3 moves upward under the action of the lifting spring 22. When it is out of contact with the pressure core 5, the buffer pad 1 23 is already in contact with the top of the buffer groove 11. The buffer pad 1 23 itself has good resilience, which can make the upward movement speed of the guide column 21 slow, thereby cushioning the ejector plate 3 and the workpiece above.
[0035] When the buffer spring 64 is out of compression, the ejector plate 3 is about to break away from the contact with the binder core 5. In the process of rising, since the second gasket 63 is placed inside the movable groove 51 and the bottom of the second gasket 63 protrudes from the bottom of the binder core 5 by a distance of 3-9 mm, the second gasket 63 and the second buffer pad 65 can press the workpiece and slowly rise it, thereby preventing it from jumping upward due to excessive rising speed.
[0036] By arranging a buffer structure 2 on the base 1, the ejector plate 3 moves upward under the action of the lifting spring 22. When it is out of contact with the pressing core 5, the buffer pad 23 contacts the top of the buffer groove 11. The buffer pad 23 itself has good resilience, which can make the upward movement rate of the guide column 21 low, thereby buffering the ejector plate 3 and the workpiece above it, avoiding inertia generated in the rising process during the return stroke of the stamping, avoiding the inertia from being transferred to the workpiece, avoiding the workpiece from jumping, and improving the grasping accuracy of the mechanical clamp;
[0037] By providing a buffer structure 2 6 on the pressing core 5, and the pressing core 5 is hung with the lifting plate 4 through the buffer structure, it can be buffered during the return process. The bottom of the gasket 2 63 protrudes from the bottom of the pressing core 5 by a distance of 3-9 mm. The gasket 2 63 and the buffer pad 2 65 can press the workpiece and slowly rise it, thereby preventing it from jumping upward due to excessive rising speed.
[0038] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.
Claims
1. A buffering and limiting structure of a rising component, characterized in that: It comprises a base (1), a concave template (7) is installed above the base (1), four groups of buffer structures (2) distributed in a rectangular structure are arranged above the base (1), and a top plate (3) is connected above the four groups of buffer structures (2); A lifting plate (4) is provided above the base (1) for sliding up and down, and four groups of buffer structures (6) distributed in a rectangular structure are provided below the lifting plate (4) for sliding up and down. A pressing core (5) is connected below the four groups of buffer structures (6) for sliding up and down, and an abutting die (8) is provided below the lifting plate (4).
2. A buffering and limiting structure for a rising component according to claim 1, characterized in that: The buffer structure (2) includes a guide column (21) connected to the corner below the ejector plate (3), a lifting spring (22) is sleeved on the guide column (21), a gasket (24) is installed at the bottom end of the guide column (21), and a buffer pad (23) is provided on the gasket (24).
3. The buffering and limiting structure of a rising component according to claim 2, characterized in that: Four buffer grooves (11) with rectangular structures are provided below the base (1). The cross section of the buffer groove (11) is a convex structure. The lower end of the guide column (21) is placed in the buffer groove (11), and the gasket (24) and the buffer pad (23) are both slidably placed in the buffer groove (11).
4. The buffering and limiting structure of a rising component according to claim 1, characterized in that: The second buffer structure (6) comprises a connecting rod (61) that is slidably sleeved on the lifting plate (4) up and down, a limiting ring (62) is provided above the connecting rod (61), a second gasket (63) is provided at the lower end of the connecting rod (61), and a second buffer pad (65) is provided on the second gasket (63).
5. The buffering and limiting structure of a rising component according to claim 4, characterized in that: Four rectangular movable grooves (51) are provided below the pressing core (5), and the cross section of the movable groove (51) is a convex structure. The lower end of the connecting rod (61) is placed in the movable groove (51), and the gasket (63) and the buffer pad (65) are both slid up and down and placed in the movable groove (51). A buffer spring (64) is sleeved on the hooking rod (61), and the upper and lower ends of the buffer spring (64) are respectively in contact with the lower part of the lifting plate (4) and the upper part of the pressing core (5).
6. The buffering and limiting structure of a rising component according to claim 5, characterized in that: When the limiting ring (62) contacts the upper surface of the lifting plate (4), the second gasket (63) is placed inside the movable groove (51), and the bottom of the second gasket (63) protrudes from the bottom of the pressing core (5) by a distance of 3-9 mm.