Stamping and bending forming assembly

Abstract

The utility model discloses a stamping, bending and forming assembly which is installed in an upper die and a lower die of a stamping die, the upper die and the lower die finish stamping, bending and forming operation of a part to be bent through die opening and closing actions, the stamping, bending and forming assembly comprises a lower forming insert core, and a first forming part is arranged on the side portion of the lower forming insert core; the material pressing block is located above the lower forming insert core, a part to be bent is arranged between the material pressing block and the lower forming insert core, and the material pressing block ascends and descends along with the die opening and closing action of the upper die; and the upper forming insert core is located on one side of the material pressing block, a second forming part and a mounting cavity are machined on the upper forming insert core, the second forming part is matched with the first forming part, a rolling shaft is rotatably arranged in the mounting cavity, and the rolling shaft is matched with the first forming part. According to the device, the rolling shaft moves downwards and generates bending force together with the upper forming insert core and the lower forming insert core, forming of a to-be-bent part is completed, the rolling shaft makes contact with the to-be-bent part in a rolling friction mode and participates in the whole forming process all the time, and the to-be-bent part is prevented from being abraded.

Description

Technical Field

[0001] The utility model relates to the technical field of local improved design of stamping dies, in particular to a stamping and bending forming component. Background Art

[0002] In modern industrial manufacturing, many stamping parts are becoming increasingly sophisticated, with high demands on surface quality. For example, some stamping and bending products are made of thick materials, making bending difficult and requiring high bending forces. However, the material surface hardness is relatively low. During bending, the product surface and the bending part undergo relative motion and friction, resulting in friction marks, also known as bend marks. Increasing the bending gap to overcome these marks can result in incomplete bending and unqualified product dimensions. Consequently, conventional bending structures cannot meet the product's bending dimension and surface requirements.

[0003] In the prior art, patent publication number CN218503084U discloses a smooth-surface baking tray stamping and forming structure, comprising an upper die and a lower die assembly, the lower die assembly comprising two side dies and an intermediate die, a lower die base provided at the lower end of the lower die assembly, extrusion rollers provided at the upper ends of the two side dies, the two ends of the extrusion rollers being connected to the front and rear end surfaces of the side dies via return assemblies, a plurality of spring push rods provided on the intermediate die, a plurality of positioning bolts provided on one side of the side dies, a self-lubricating pressure plate provided on the upper end of the side dies, and an upper pressure roller provided on the lower end of the upper die. The beneficial effects of the present utility model are as follows: the smooth-surface baking tray stamping and forming structure adopts a combination of the extrusion rollers on the side dies and the upper pressure roller on the upper die, converting the sliding friction of the bending punch into rolling friction, minimizing scratches, and at the same time, cooperating with the multiple spring push rods on the intermediate die, automatically ejecting the product after the stamping is completed, avoiding secondary damage caused by the product colliding with the die surface when the personnel are removing the material.

[0004] In the above technical solution, during the extrusion process, the upper pressure roller and the extrusion roller simultaneously roll and extrude along the upper and lower end surfaces of the bent part of the metal sheet. When rolling, the extrusion roller is under pressure and swings slightly downward. This method can prevent the metal sheet from rubbing against the upper and lower molds, and reduce the scratches caused by friction, but the overall structural design is relatively complicated.

[0005] In order to solve one of the above problems, the present application provides a stamping and bending forming component. Utility Model Content

[0006] The purpose of the utility model is to solve the problems existing in the prior art, and a stamping and bending forming component is proposed, which completes the forming of the part to be bent by the downward movement of the roller and the bending force generated together with the upper and lower forming inserts. The roller first contacts the part to be bent in a rolling friction manner and is always involved in the entire forming process to avoid wear on the part to be bent.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a stamping and bending forming assembly is installed in the upper die and the lower die of the stamping die, and the upper die and the lower die complete the stamping and bending forming operation of the workpiece to be bent by opening and closing the die. The stamping and bending forming assembly includes a lower forming insert, and the side of the lower forming insert is provided with a first forming portion;

[0008] The pressing block is located above the lower forming insert and the part to be bent is arranged between the two. The pressing block moves up and down with the opening and closing of the upper mold;

[0009] The upper forming insert is located on one side of the pressing block. A second forming part and an installation cavity are processed on the upper forming insert. The second forming part cooperates with the first forming part. A roller is rotatably provided in the installation cavity, and the roller cooperates with the first forming part.

[0010] Furthermore, the roller as described above is rotatably inserted into the installation cavity.

[0011] Furthermore, baffles are respectively provided on both sides of the upper forming insert as described above, and the baffles are located outside the two ends of the roller.

[0012] Furthermore, the baffle as described above is processed with a mounting block, the upper molded insert is provided with a sliding groove, and the mounting block is embedded in the sliding groove.

[0013] Furthermore, the baffle as described above is also processed with an avoidance position, which matches the position and size of the second formed portion.

[0014] Furthermore, the force-bearing positions of the first forming portion and the roller corresponding to the above-mentioned first forming portion are staggered.

[0015] Furthermore, the cross section of the first forming portion as described above is a combination of arc transition, straight line and oblique line, the cross section of the second forming portion is a combination of arc transition and straight line, the cross section of the roller is circular, and the circular shape of the circle corresponds to the position of the oblique line.

[0016] Furthermore, the lower forming insert as described above is installed in the lower mold, and the upper forming insert and the pressing block are arranged in the upper mold.

[0017] Compared with the prior art, the beneficial effect of the present invention is that the device generates bending force through the downward movement of the roller and together with the upper and lower forming inserts to complete the forming of the workpiece to be bent. The roller first contacts the workpiece to be bent in a rolling friction manner and is always involved in the entire forming process to avoid wear on the workpiece to be bent.

[0018] The device has a simple structural design, compact arrangement, and requires a small number of parts. When bending, rolling friction is generated when the parts contact the material, which reduces the friction with the material during bending to overcome bending marks. The assembly method is simple, the bending force is guaranteed, and the surface quality of the product that meets the requirements can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 This is an explosion diagram of the utility model;

[0021] Figure 3 for Figure 2 The main view;

[0022] Figure 4 for Figure 1 main view.

[0023] In the figure: 1, lower forming insert; 11, first forming part; 2, pressing block; 3, roller; 4, upper forming insert; 41, second forming part; 42, sliding groove; 43, mounting cavity; 5, baffle; 51, avoidance position; 52, mounting block. DETAILED DESCRIPTION

[0024] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "fixed", "mounted", "connected", "set", etc. should be understood in a broad sense. For example, when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "mounted on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between the two elements.

[0026] For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0027] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0028] Example

[0029] Reference Figure 1-4 As shown, the utility model is a stamping and bending forming component, which is installed in the upper and lower dies of the stamping die, and the upper and lower dies complete the stamping and bending forming operation of the part to be bent by opening and closing the die. No further details are given here. The stamping and bending forming component includes a lower forming insert 1, and the side of the lower forming insert 1 is provided with a first forming part 11; a pressing block 2, the pressing block 2 is located above the lower forming insert 1 and a part to be bent is provided between the two, and the pressing block 2 rises and falls with the opening and closing action of the upper die to press the part to be bent for subsequent bending and forming operations; an upper forming insert 2, the upper forming insert 2 is located on one side of the pressing block 2, and a second forming part 41 and a mounting cavity 43 are processed on the upper forming insert 2, the second forming part 41 cooperates with the first forming part 11, and a roller 3 is rotatably provided in the mounting cavity 43, and the roller 3 cooperates with the first forming part 11. Specifically, the lower molding insert 1 is installed in the lower mold, and the upper molding insert 2 and the pressing block are arranged in the upper mold.

[0030] During the bending operation, as the upper forming insert 24 moves downward with the roller 3, the roller 3 first contacts the workpiece to be bent, generating rolling friction. Throughout the entire bending process, the roller 3 remains in contact with the workpiece, participating in the entire process through rolling friction. When the bending operation is completed, the corresponding forming force points of the roller 3 and the lower forming insert 11 are offset, so that the final stopping point of the rolling friction is not at the corresponding extrusion position, ensuring a seamless bending effect.

[0031] Furthermore, the roller 3 is rotatably inserted into the mounting cavity 43. Specifically, baffles 5 are provided on both sides of the upper mold insert 2. The baffles 5 are located outside the two ends of the roller 3 to prevent the roller 3 from jumping out and losing its position. Figure 2As shown, the baffle 5 is machined with a mounting block 52, which is embedded in a sliding groove 42 formed in the upper forming insert 2, facilitating replacement and maintenance of the roller 3. This provides a compact structure, simple assembly, and low manufacturing costs. Furthermore, the baffle 5 is machined with a relief portion 51, which matches the position and dimensions of the second forming portion 41. This relief portion 51 prevents contact with the workpiece to be bent, which could affect its surface quality.

[0032] Furthermore, the force-bearing positions of the first forming part 11 and the roller 3 are staggered, that is, when the upper and lower molds of the stamping die are closed, the first forming part 11, the second forming part 41 and the roller 3 can contact the workpiece to be bent at the same time, but the two sides of the workpiece to be bent are respectively subjected to the force applied by the first forming part 11 and the second forming part 41, while only one side of the workpiece to be bent is subjected to the force applied by the roller 3, and the other side of the workpiece to be bent is in a suspended position. Figure 4 It can be seen that, specifically, the cross-section of the first forming part 11 is a combination of arc transition, straight line and oblique line, the cross-section of the second forming part 41 is a combination of arc transition and straight line, the cross-section of the roller 3 is circular, and the circular shape of the circle corresponds to the position of the oblique line, so that the last stopping point of the rolling friction between the roller 3 and the workpiece to be bent is not in the corresponding extrusion position, so as to ensure a seamless bending effect.

[0033] The design idea of the device of the present utility model is that, through scientific analysis, creases are caused by the friction on the surface of the material, and the way in which friction is generated is divided into sliding friction and rolling friction. Conventional bending forms generally produce sliding friction, which will produce relatively large friction on the surface of the product material, so that the creases on the product after bending will be correspondingly large; the other type of rolling friction produces significantly less friction on the surface of the material, and the creases on the product after bending are very slight, or even traceless. Based on the above analysis, the present application improves the stamping and bending forming component into a rolling friction bending structure, which utilizes the contact between the roller 3 on the bending part and the material, so that the roller 3 and the material produce rolling friction during the forming process, which greatly reduces the friction on the surface of the material. At the same time, the forming force points of the upper forming insert 24 and the lower forming insert 11 are staggered by a safe distance (selected according to actual engineering needs) to avoid the combination of the force points to produce indentations, so that the bending marks after forming can achieve a traceless effect.

[0034] In the device of the present invention, the assembly and matching relationship of the various components involved, the materials of the components, and other components of the upper and lower dies of the stamping die are existing technologies or materials. The relevant technical personnel can directly purchase or customize them from the market according to the required product models and specifications.

[0035] The above description is only a preferred specific embodiment of the present invention. Common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above embodiment, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. Any person skilled in the art who is familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the scope of protection of the present invention.

Claims

1. A stamping and bending forming assembly is installed in the upper and lower dies of a stamping die. The upper and lower dies complete the stamping and bending forming operation of the part to be bent by opening and closing the die. It is characterized in that: The stamping and bending forming assembly comprises a lower forming insert (1), wherein a first forming portion (11) is provided on a side of the lower forming insert (1); A pressing block (2), the pressing block (2) is located above the lower forming insert (1) and a part to be bent is provided between the two, and the pressing block (2) moves up and down with the opening and closing of the upper mold; The upper molding insert (4) is located on one side of the pressing block (2). The upper molding insert (4) is processed with a second molding portion (41) and a mounting cavity (43). The second molding portion (41) cooperates with the first molding portion (11). A roller (3) is rotatably provided in the mounting cavity (43), and the roller (3) cooperates with the first molding portion (11).

2. A stamping and bending forming component according to claim 1, characterized in that: The roller (3) is rotatably inserted into the installation cavity (43).

3. The stamping and bending forming component according to claim 2, characterized in that: Baffles (5) are respectively provided on both sides of the upper forming insert (4), and the baffles (5) are located outside the two ends of the roller (3).

4. The stamping and bending forming component according to claim 3, characterized in that: The baffle (5) is processed with a mounting block (52), the upper molding insert (4) is provided with a sliding groove (42), and the mounting block (52) is embedded in the sliding groove (42).

5. The stamping and bending forming component according to claim 4, characterized in that: The baffle (5) is also processed with an avoidance position (51), and the avoidance position (51) matches the position and size of the second forming portion (41).

6. The stamping and bending forming component according to claim 1, characterized in that: The first forming portion (11) and the corresponding force-bearing position of the roller (3) are staggered.

7. The stamping and bending forming component according to claim 6, characterized in that: The cross section of the first forming portion (11) is a combination of an arc transition, a straight line and an oblique line, the cross section of the second forming portion (41) is a combination of an arc transition and a straight line, the cross section of the roller (3) is a circle, and the circle of the circle corresponds to the position of the oblique line.

8. The stamping and bending forming assembly according to any one of claims 1 to 7, characterized in that: The lower forming insert (1) is installed in the lower mold, and the upper forming insert (4) and the pressing block are arranged in the upper mold.

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