Bending die with roller pins
By installing a needle roller on the bent block of the bending mold and setting a space under the rolling needle, the problem of bending materials and bent block abrasions caused by friction in the prior art is solved, and friction is reduced. Reduce maintenance frequency and improve product quality.
Patent Information
- Application Number
- CN202421122949.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-22
AI Technical Summary
During the bending process of existing metal molds, the bending materials and bent blocks are seriously damaged due to friction, which affects the product surface quality and increases the frequency of mold maintenance.
Design a bend mold with a needle roller, which is located at the junction of the side surface of the bent block and the upper surface, to reduce friction between the bent material and the lower mold, and to set a space under the needle roller to Avoid secondary friction.
By changing sliding friction into rolling friction, the abrasions during the molding of the bent material are reduced, the mold maintenance frequency is reduced, and the product surface quality and production efficiency are improved.
Smart Images
Figure CN222470550U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a bending mold with a rolling needle. Background Art
[0002] Metal mold bending is a very common process in the field of mechanical processing. With the continuous development of society, the demand for bending machines in the market is increasing, so bending molds are becoming more and more diversified. However, the bending blocks of existing metal molds mostly use fixed bending blocks. The bent material and the bending block have relative movement during forming, resulting in sliding friction. The bent material is scratched first. As the production time increases, the scratches on the bent material become more and more serious. At the same time, the bending block is also scratched. Once the scratches occur, they will become more and more obvious, and eventually produce obvious scratches, affecting the surface quality of the product, and will lead to a high frequency of mold maintenance, thereby affecting production efficiency. Utility Model Content
[0003] The technical problem to be solved by the utility model is that the bending mold in the prior art is prone to friction when forming the bent material, resulting in serious scratches on the bent material and the bending block, affecting the surface quality of the product, increasing the number of mold maintenance times, and low production efficiency.
[0004] In order to solve the problems existing in the prior art, a bending mold with needle rollers is disclosed, wherein the bending mold comprises an upper mold and a lower mold, the upper mold is a punch fixed on a stamping machine, and the lower mold is fixed on the stamping machine, wherein the lower mold comprises a pair or more pairs of bending blocks that are symmetrical on the left and right, and needle rollers are provided at the junction of the side surface and the upper surface of the bending block, and the needle rollers are used to reduce the friction between the bent material and the lower mold, and a gap is provided under the needle roller to avoid secondary friction between the bent material and the bending block.
[0005] Furthermore, the lower die also includes a lower template, and the bending block is fixed on the lower template.
[0006] Furthermore, the lower mold also includes a floating block and a floating spring. The floating block is configured above the floating spring through a connecting device. The floating block is set between the left-right symmetrical bending blocks. Before the mold starts working, the top of the floating block and the upper surface of the bending block are on the same horizontal line.
[0007] Furthermore, a forming groove matching the bottom of the upper mold is provided at the upper end of the floating material block.
[0008] In one feasible solution, the forming groove is an arc-shaped groove.
[0009] Furthermore, the upper die and the lower die cooperate with each other, and when the upper die and the lower die are closed, the needle roller is located on the side close to the bottom of the upper die.
[0010] Furthermore, the needle roller is made of tungsten steel.
[0011] Furthermore, the needle roller is a cylindrical structure.
[0012] Furthermore, the diameter of the needle roller is between 5 mm and 20 mm.
[0013] In one feasible solution, the diameter of the needle roller is 10 mm.
[0014] The bending die with needle rollers of the present solution comprises an upper die and a lower die, wherein the upper die is a punch fixed on a stamping machine, and the lower die is fixed on the stamping machine, wherein the lower die comprises a pair or more pairs of bending blocks that are symmetrical on both sides, and needle rollers are provided at the junction of the side surface and the upper surface of the bending block, and the needle rollers are used to reduce the friction between the bent material and the lower die, and a clearance is provided below the needle rollers to avoid secondary friction between the bent material and the bending block. The utility model changes the fixed R angle on the bending block to needle rollers, and when the bent material moves downward, the needle rollers start to move after contacting the bent material, so that the sliding friction between the bent material and the bending block becomes rolling friction, and the friction coefficient becomes smaller, thereby reducing the scratches on the bent material during the forming process, and a clearance is provided below the needle rollers, so that no secondary friction will be generated between the bent material and the bending block, thereby reducing the maintenance frequency of the mold and improving the surface quality and production efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.
[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;
[0017] Figure 2 This is a schematic diagram of the embodiment of the utility model when the mold is opened;
[0018] Figure 3 This is a schematic diagram of the embodiment of the present utility model when the mold is closed
[0019] Figure 4 It is a schematic diagram of a bending block of an embodiment of the utility model;
[0020] Figure 5 yes Figure 4 A partial schematic diagram of
[0021] In the figure: 1-upper die, 2-lower die, 21-bending block, 211-needle roller, 212-avoidance, 22-lower die fast, 23-floating block, 231 forming groove, 24-floating spring, 3-bent material, 4-formed product. DETAILED DESCRIPTION
[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0023] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "inner", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here.
[0024] In order to solve the problems existing in the prior art, the present application provides a bending die with a roller needle. Figure 1 As shown, the bending die includes an upper die 1 and a lower die 2, the upper die 1 is a punch fixed on a stamping machine, and the lower die 2 is fixed on the stamping machine, wherein the lower die 2 includes a pair or more pairs of bending blocks 21 that are symmetrical on both sides, and a needle roller 211 is provided at the junction of the side surface and the upper surface of the bending block 21, and the needle roller 211 is used to reduce the friction between the bent material 3 and the lower die 2, and a gap 212 is provided below the needle roller 211 to avoid secondary friction between the bent material 3 and the bending block 21.
[0025] By replacing the fixed angle on the bending block 21 with a needle roller 211, when the bent material 3 moves downward, the needle roller 211 starts to move after contacting the bent material 3, so that the sliding friction between the bent material 3 and the bending block 21 is converted into rolling friction, and the friction coefficient is reduced, thereby reducing the scratches on the bent material 3 during the forming process, and a gap 212 is provided under the needle roller 211, so that no secondary friction is generated between the bent material 3 and the bending block 21, thereby reducing the frequency of mold maintenance and improving the product surface quality and production efficiency.
[0026] For further information, please refer to Figure 1 The lower mold 2 also includes a lower template 22, and the bending block 21 is fixed on the lower template 22. The lower template 22 provides support for the entire mold to ensure stability during the molding process.
[0027] Furthermore, the lower mold 2 also includes a floating block 23 and a floating spring 24. The floating block 23 is configured above the floating spring 24 through a connecting device. The floating block 23 and the floating spring 24 are jointly configured in the middle position inside the lower mold plate 22. The floating block 23 is set in the middle of the bending block 21 and is consistent in height with the bending block 21.
[0028] In this embodiment, combined with Figure 2 As shown, before the mold starts working, the top of the floating block 23 and the upper surface of the bending block 21 are located on the same horizontal line.
[0029] For further information, please refer to Figure 2 The upper end of the floating block 23 is provided with a molding groove 231 matching the bottom of the upper mold 2. In actual use, combined with Figure 3 As shown, the bent material 3 is placed on the upper surface of the bending block 21 and the floating block 23. When the upper mold 1 is pressed downward, the bottom of the upper mold 1 corresponds to the forming groove 231, so that the bent material 3 slides into the forming groove 231 along both sides of the forming groove 231. The bent material 3 is squeezed by the upper mold 1, so that the bent material 3 becomes a desired shape. In this embodiment, the upper mold 1 and the forming groove 231 are arc-shaped structures.
[0030] In other embodiments, the upper mold 1 and the molding groove 231 may be concave, V-shaped, or U-shaped.
[0031] Furthermore, when the upper mold 1 and the lower mold 2 are closed, that is, when the upper mold 1 is stamping downward, the needle roller 211 is on the side close to the bottom of the upper mold 1, and the upper mold 1 contacts the bent material 3 after moving downward. When the bending mold bends the bent material 3, the maximum extrusion force between the bent material 3 and the lower mold 2 is on the needle roller 211. When the bent material 3 is bent downward, the bent material 3 rolls with the needle roller 211, thereby avoiding friction between the bent material 3 and the lower mold 2, and preventing scratches on the bent material 3.
[0032] In this embodiment, combined with Figure 4 and Figure 5 As shown, a gap 212 is provided below the needle roller 211, so that when the bent material 3 descends, the needle roller 211 contacts the surface of the bent material 3, and a certain gap is formed between the bending block 21 and the surface of the bent material 3. This gap can reduce the friction between the bent material 3 and the bending block 211, because the needle roller 211 does not directly contact the surface of the bending block when rolling, avoiding the generation of secondary friction, thereby avoiding damage such as wear and scratches on the product surface caused by secondary friction, which helps to maintain the integrity and quality of the product surface.
[0033] Furthermore, the bent material 3 continues to move downward under the drive of the upper die 1 until it reaches the bottom of the forming groove 231 , and the forming process of the bent material 3 is completed, the product is formed in place, and the bent material 3 is bent into a formed product 4 .
[0034] In this embodiment, the needle roller 211 is made of tungsten steel, which has high hardness, excellent wear resistance and good high-temperature stability, which is beneficial to improving product quality and production efficiency.
[0035] In this embodiment, the needle roller 211 is a cylindrical structure. When the bent material 3 is deformed and slides into the forming groove 231, the needle roller 211 can reduce the friction between the bent material 3 and the lower mold 2 to prevent scratches on the bent material 3.
[0036] Furthermore, the diameter of the needle roller 211 is between 5 mm and 20 mm. If the diameter of the needle roller 211 is less than 5 mm, the stress concentration during the forming process may easily cause the workpiece to deform or break, making the production of the needle roller 211 and the corresponding lower mold 2 more difficult. If the diameter of the needle roller 211 is greater than 20 mm, the force distribution during the forming process may be uneven, which may cause uneven forming, deformation or breakage of the workpiece, limiting the precision and complexity of the forming.
[0037] Preferably, in this embodiment, the diameter of the needle roller 211 is 10 mm.
[0038] Furthermore, after the mold completes the molding process, the floating block 23 releases the molded product 4 from the mold under the action of the floating spring 24, so that the molded product 4 can be demoulded smoothly.
[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A bending die with a rolling needle, characterized in that: The bending die comprises an upper die (1) and a lower die (2), wherein the upper die (1) is a punch fixed on a punching machine, and the lower die (2) is fixed on the punching machine, wherein the lower die (2) comprises a pair or more pairs of bending blocks (21) that are symmetrical on both sides, and a roller needle (211) is provided at the junction of the side surface and the upper surface of the bending block (21), and the roller needle (211) is used to reduce the friction between the bent material (3) and the lower die (2), and a gap (212) is provided below the roller needle (211) to avoid secondary friction between the bent material (3) and the bending block (21).
2. The bending die with a roller needle according to claim 1, characterized in that: The lower die (2) further comprises a lower template (22), and the bending block (21) is fixed on the lower template (22).
3. The bending die with a needle roller according to claim 1 or 2, characterized in that: The lower mold (2) further comprises a floating block (23) and a floating spring (24); the floating block (23) is arranged above the floating spring (24) via a connecting device; the floating block (23) is arranged between the left-right symmetrical bending blocks (21); before the mold starts working, the top of the floating block (23) and the upper surface of the bending block (21) are located on the same horizontal line.
4. The bending die with a needle roller according to claim 3, characterized in that: The upper end of the floating material block (23) is provided with a molding groove (231) matching the bottom of the upper mold (1).
5. The bending die with a needle roller according to claim 4, characterized in that: The forming groove (231) is an arc-shaped groove.
6. The bending die with a needle roller according to claim 1 or 4, characterized in that: The upper die (1) and the lower die (2) are matched with each other, and when the upper die (1) and the lower die (2) are closed, the needle roller (211) is located on a side close to the bottom of the upper die (1).
7. The bending die with a needle roller according to claim 1, characterized in that: The needle roller (211) is made of tungsten steel.
8. The bending die with a needle roller according to claim 1 or 2, characterized in that: The rolling needle (211) is a cylindrical structure.
9. The bending die with a needle roller according to claim 5, characterized in that: The diameter of the rolling needle (211) is between 5 mm and 20 mm.
10. The bending die with a needle roller according to claim 9, characterized in that: The diameter of the rolling needle (211) is 10 mm.