Universal stamping die edge pressing device
By designing a universal punching edge device using nitrogen springs and mold springs, the problem of increasing cost and poor forming effect of stamping mold edge device in the prior art is solved, and the mold debugging time is short, and the edge pressing force can be adjusted and used is realized. Long lifespan effect.
Patent Information
- Application Number
- CN202421114228.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The design of the edge pressing device separately in small batches or scientific research trial production increases the production cost and processing time, and the unbalanced edge pressing force leads to poor molding effect, and special devices are difficult to adapt to product structure optimization and improvement.
Design a universal punch-molded edge device, including upper and lower dies, to provide stable press-beam force with nitrogen springs and mold springs, to achieve press-beam force adjustment and Quick replacement of the device.
It realizes the short mold debugging time, easy edge pressing force operation and long service life. It is suitable for small batch simple stamping molds, ensuring the stability and flexibility of product molding effect.
Smart Images
Figure CN222242130U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of stamping dies, and particularly relates to a universal stamping die edge pressing device. Background Art
[0002] At present, the stamping dies on the market are mainly used for stretching cylindrical parts. Cylindrical parts must be pressed during the stretching process, otherwise the product will easily wrinkle. The conventional operation is to design a pressing device separately in each stamping process to ensure that the product can be stretched and formed smoothly. This method is necessary for mass production molds, but for small batches or simple molds for scientific research and trial production, setting a pressing device separately for each mold will not only increase production costs and extend processing time, but also cause the special pressing device to be unable to continue to be used due to product structure optimization and improvement in the later stage, resulting in a lot of waste. Especially for some simple stamping dies with similar product shapes and sizes, rubber pads are usually used to achieve pressing. This operation method not only takes a long time to operate, but also has high labor intensity in production. In addition, due to the uneven pressing force, the product molding effect is poor, and there are also disadvantages such as easy damage to the rubber.
[0003] The utility model designs a universal punching die edge pressing device in view of the above problems, which has compact structure, beautiful appearance, convenient replacement, simple process and convenient operation. Utility Model Content
[0004] The utility model aims to provide a universal punching die edge pressing device in view of the deficiencies of the prior art. The device has a compact structure and is easy to replace; the mold debugging time is short, the edge pressing force adjustment operation is convenient, and the service life is long.
[0005] The technical purpose of this utility model is achieved through the following technical solutions:
[0006] A universal punching die edge clamping device comprises an upper die and a lower die, the upper die is provided with an inner concave hole, the lower die comprises a bottom plate, a die foot and an upper seat plate, the bottom plate is connected to the upper seat plate through the die foot, a cavity is provided in the center of the upper seat plate, the cavity is used for a top plate to pass through, the bottom plate and the top plate are connected by multiple groups of nitrogen springs and die springs, a lower template is connected to the upper seat plate, a convex die head adapted to the inner concave hole is provided on the lower template, a edge clamping push rod is connected to the top plate, the edge clamping push rod passes through a through hole provided on the lower template and is connected to a edge clamping ring at the top end, and the edge clamping ring abuts against the bottom edge of the upper die.
[0007] Preferably, a square-head guide column is provided on the bottom plate, and a square-hole guide sleeve is provided on the top plate, and the top plate realizes up and down axial movement through the sliding cooperation between the square-head guide column and the square-hole guide sleeve.
[0008] Preferably, the bottom plate is connected to the mold foot by screws, and the mold foot is connected to the upper seat plate by screws.
[0009] Preferably, it also includes a ejector plate adapted to the inner concave hole of the upper mold, and the ejector plate is arranged in the inner concave hole.
[0010] Preferably, a sink is provided on the top plate for fixing the plunger of the nitrogen spring and the mold spring.
[0011] Preferably, the lower mold plate and the male die head are integrally formed.
[0012] Preferably, the lower mold plate and the male mold head are detachably connected.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The utility model provides a universal punching die edge pressing device, which can provide effective edge pressing for a simple cylindrical part stretching die, has strong versatility, short die debugging time, convenient edge pressing force adjustment and long service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the state before mold closing of an embodiment of the utility model.
[0016] Figure 2 This is a schematic diagram of the state of one embodiment of the utility model after mold closing.
[0017] In the above drawings:
[0018] 10. Upper die; 11. Inner concave hole; 12. Ejector plate; 20. Lower die; 21. Bottom plate; 22. Die foot; 23. Upper seat plate; 24. Cavity; 25. Ejector plate; 26. Nitrogen spring; 27. Die spring; 28. Blank holder push rod; 29. Blank holder ring; 30. Square head guide pin; 31. Square hole guide sleeve; 32. Sinking table; 33. Lower template; 34. Punch head; A. Blank sheet; B. Punch slide; C. Punch workbench. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] As a preferred embodiment of a universal die edge pressing device of the utility model, Figure 1 and Figure 2As shown, this embodiment provides a universal punching die edge clamping device, including an upper die 10 and a lower die 20, the upper die is provided with an inner concave hole 11, the lower die 20 includes a bottom plate 21, a die foot 22 and an upper seat plate 23, the bottom plate 21 is connected to the upper seat plate 23 through the die foot 22, a cavity 24 is provided in the center of the upper seat plate 23, the cavity 24 is used for a top plate 25 to pass through, the bottom plate 21 and the top plate 25 are connected by multiple groups of nitrogen springs 26 and mold springs 27, a lower mold plate 33 is connected to the upper seat plate 23, a punch head 34 adapted to the inner concave hole 11 is provided on the lower mold plate 27, a edge clamping push rod 28 is connected to the top plate 25, the edge clamping push rod 28 passes through a through hole provided on the lower mold plate 27 and is connected to a edge clamping ring 29 at the top end, and the edge clamping ring 29 abuts against the bottom edge of the upper die 10.
[0021] It should be noted that the nitrogen spring 26 and the mold spring 27 are two elastic elements, which provide sufficient blank holding force for the universal blank holding device to ensure the normal operation of the universal blank holding device, and can be freely matched and combined according to the calculated value of the blank holding force to achieve stable pressure output.
[0022] In some embodiments, a square head guide column 30 is provided on the bottom plate 21, and a square hole guide sleeve 31 is provided on the top plate 25. The top plate 25 realizes up and down axial movement through the sliding cooperation between the square head guide column 30 and the square hole guide sleeve 31, and ensures that no radial displacement occurs during the movement, thereby preventing the top plate 25 from interfering with the bottom plate 21 when moving.
[0023] In some embodiments, in order to facilitate separate manufacturing and assembly, and also to facilitate maintenance, in this embodiment, the bottom plate 21 is connected to the mold foot 22 by screws, and the mold foot 22 is connected to the upper seat plate 23 by screws.
[0024] In some preferred embodiments, a top plate 12 adapted to the inner concave hole 11 of the upper mold 10 is further included. The top plate 12 is arranged in the inner concave hole 11. The top plate 12 provides a uniform force on the sheet A during stamping, thereby preventing the sheet A from undergoing irregular deformation and ensuring the yield rate.
[0025] In other embodiments, in order to improve the stability of the installation of the nitrogen spring 26 and the mold spring 27 and improve the reliability of the stamping work, a sink 32 is provided on the top plate 25 in this embodiment for fixing the plungers of the nitrogen spring 26 and the mold spring 27.
[0026] In some embodiments, the lower mold plate 33 and the punch head 34 are integrally formed. In this embodiment, the lower mold plate 33 and the punch head 34 are integrally manufactured, so that the reliability during the stamping process is high.
[0027] In other preferred embodiments, the lower mold plate 33 and the punch head 34 are detachably connected. In this embodiment, the lower mold plate 33 and the punch head 34 are connected, and their main function is to replace the punch head 34 to meet different product needs.
[0028] As attached Figure 1 As shown, the installation process of the universal edge clamping device is as follows:
[0029] Before use, install it on the punching machine workbench C and fix it. The lower template 33 is fixed on the upper base plate 23, and the upper template is fixed on the punching machine slide B. Select a suitable blanking push rod 28 according to the product punching stroke, insert the blanking push rod 22 into the through hole of the lower template 33, and then put the blanking ring 29 on the blanking push rod 28 to make it higher than the punch by 0.5 to 1 mm.
[0030] As attached Figure 2 As shown, the working status of the universal edge holding device is as follows:
[0031] During operation, the upper die 10 starts to move downward along with the punch slider B. When the upper die 10 contacts the sheet A, the pressure ring 29 starts to be stressed, and the top plate 25 starts to move downward through the pressure push rod 28. At this time, the nitrogen spring 26 and the mold spring 27 in the universal pressure device start to be compressed, applying a reverse pressure force to the pressure push rod 28, which is applied to the sheet A through the pressure ring 29.
[0032] As the slider continues to move downward, the punch head 34 begins to push the sheet A gradually into the inner recessed hole 11. At this time, the sheet in the contact area with the pressure ring 29 begins to flow evenly along the cavity of the die 10 due to the pressure force. At the same time, the sheet entering the cavity of the die 10 will push the ejector plate 12 upward. During the entire molding process, the pressure ring 29 will tightly press the sheet A so that the sheet A will only flow along the tangent direction of the material thickness.
[0033] At this time, if the edge holding ring 29 cannot continuously apply force or the applied pressure is insufficient, the sheet A will become unstable and wrinkled under the action of internal stress, thereby affecting the forming effect.
[0034] The universal edge holding device of the punching die of the utility model adopts a nitrogen spring 26 and a die spring 27 to provide an edge holding force, which can provide a stable edge holding force and ensure the smooth molding of the product.
[0035] After the product is stamped, the slider starts to move upward and retreat. At this time, the ejector plate 12 will push the molded product out of the cavity of the stamping die 10 under the action of the punching rod of the punch press, completing the stamping action.
[0036] When replacing the stamping die, select a suitable nitrogen spring or die spring according to the calculated value of the product's blank holding force in advance; then turn over the universal blank holding device of the stamping die so that its bottom plate faces upward, and then remove the hexagon socket screw that fixes the bottom cylinder of the nitrogen spring, lift the universal blank holding device to separate it from the top plate, and then remove the die spring for replacement; then remove the hexagon socket screw that fixes the nitrogen spring plunger on the top plate, and then remove the nitrogen spring for replacement; when the nitrogen spring and die spring are replaced, reassemble the universal blank holding device in the reverse order.
[0037] When replacing the stamping die, you only need to replace the nitrogen spring and die spring according to the size of the blank holding force and the product forming height, and select the appropriate length of the blank holding push rod to complete the switching of the entire blank holding device. It has low cost and fast switching, and is very suitable for small-batch simple stamping dies.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A universal punching die edge pressing device, comprising an upper die and a lower die, wherein the upper die is provided with an inner concave hole, characterized in that: The lower mold includes a bottom plate, a mold foot and an upper seat plate, the bottom plate is connected to the upper seat plate through the mold foot, a cavity is provided in the center of the upper seat plate, the cavity is used for the top plate to pass through, the bottom plate and the top plate are connected by multiple groups of nitrogen springs and mold springs, a lower mold plate is connected to the upper seat plate, a male mold head adapted to the inner concave hole is provided on the lower mold plate, a pressure push rod is connected to the top plate, the pressure push rod passes through a through hole provided on the lower mold plate and is connected to a pressure ring at the top end, and the pressure ring abuts against the bottom edge of the upper mold.
2. The universal die edge pressing device according to claim 1, characterized in that: A square head guide column is arranged on the bottom plate, and a square hole guide sleeve is arranged on the top plate. The top plate realizes up and down axial movement through the sliding cooperation between the square head guide column and the square hole guide sleeve.
3. The universal die edge pressing device according to claim 1, characterized in that: The bottom plate is connected to the mold foot by screws, and the mold foot is connected to the upper seat plate by screws.
4. The universal die edge pressing device according to claim 1, characterized in that: It also includes a top plate adapted to the inner concave hole of the upper mold, and the top plate is arranged in the inner concave hole.
5. The universal die edge pressing device according to claim 1, characterized in that: The top plate is provided with a sinker for fixing the mold spring and the plunger of the nitrogen spring.
6. The universal die edge pressing device according to claim 1, characterized in that: The lower mold plate and the male mold head are integrally formed.
7. The universal die edge pressing device according to claim 1, characterized in that: The lower mold plate and the male mold head are detachably connected.