Narrow bending forming device capable of reducing product springback

Abstract

The utility model discloses a narrow bending forming device capable of reducing product springback, which belongs to the technical field of stamping dies and comprises a bending male die, a moving groove is arranged in the bending male die, the bottom of an ejector rod is connected in the moving groove, an inner stripper is arranged at the bottom of the ejector rod, the inner stripper is movably connected in the moving groove, and a spring is arranged on the ejector rod. And the lower die is provided with a bending body, and a bending piece is placed on the bending body and located under the inner stripper. Through the action of the spring force, the inner stripper and the lower die enable a product to form a radian, the machine table continues to move downwards, the bending male die moves downwards to be in contact with the lower die, the bending piece product is bent by 90 degrees until the die descends to a dead point, forming is finished, then the machine table ascends slowly, the bending male die and the lower die of the die are separated slowly, and the bending male die and the lower die of the die are bent by 90 degrees. By means of the structure, the occurrence rate of bending springback can be effectively reduced, deformation in the bending process can be better controlled, and the precision and quality of stamping parts are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stamping dies, and in particular relates to a narrow bending forming device for reducing product springback. Background Art

[0002] In stamping die technology, if the conventional bending method is used, the product will not be bent into place, there will be a large springback after bending, and the product size requirements cannot be met.

[0003] Especially for the SUS series narrow bending products, springback has not been solved. Springback is a common and challenging problem. Springback refers to the phenomenon that the workpiece partially recovers its original shape after undergoing the bending process. Especially for narrow bending products, the springback phenomenon cannot be solved by bending compensation; this leads to reduced dimensional accuracy and unstable product quality, which brings many restrictions to the stamping process; it increases the difficulty of mold design, production, debugging and other processes. Even some products have many bends, resulting in the accumulation of tolerances, which will also lead to poor component quality. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the springback phenomenon of SUS series narrow bending products cannot be solved by bending compensation, which leads to reduced dimensional accuracy and unstable product quality, bringing many restrictions to the stamping process, increasing the difficulty of mold design, production, debugging and other processes, and even some products have many bends, resulting in the accumulation of tolerances, which also leads to poor component quality. A narrow bending forming device for reducing product springback is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a narrow bending forming device for reducing product rebound, comprising:

[0006] A bending male mold, wherein a movable groove is arranged in the bending male mold, the bottom of the ejector rod is connected in the movable groove, an inner release is arranged at the bottom of the ejector rod, the inner release is movably connected in the movable groove, and a spring is arranged on the ejector rod;

[0007] A lower die is provided with a bending body, and a bending piece is placed on the bending body and is located directly below the inner stripping.

[0008] As a further description of the above technical solution:

[0009] The inner bottom is provided with an arc-shaped protrusion, and the bending body is provided with an arc-shaped groove, and the arc-shaped protrusion and the arc-shaped groove match each other.

[0010] As a further description of the above technical solution:

[0011] A bending accommodating groove is also arranged in the bottom of the bending male mold, and the bending accommodating groove is located at the bottom of the moving groove and communicated with the moving groove.

[0012] As a further description of the above technical solution:

[0013] The width of the bending accommodating groove is greater than the width of the moving groove, and the width of the bending accommodating groove is equal to the sum of the width of the bending body and twice the thickness of the bending piece.

[0014] As a further description of the above technical solution:

[0015] The depth of the bending accommodating groove is greater than half of the height of the bending body.

[0016] As a further description of the above technical solution:

[0017] The tail portion of the bent accommodation groove is in an arc shape bending outwards.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0019] 1. In the utility model, as the upper die machine moves downward, it presses the bent product and contacts the lower die. Through the action of spring force, the inner release and the lower die make the product form an arc. The machine will continue to move downward, so that the bending male die moves downward and contacts the lower die, so that the bent product is bent 90 degrees until the die reaches the dead point and the forming is completed. Then the machine slowly rises, so that the bending male die and the lower die of the die are slowly separated, and the inner release pushes the product out of the die surface, thereby taking out the part. A complete motion trajectory is completed, and a motion cycle is completed. This structure can effectively reduce the incidence of bending springback, can better control the deformation during the bending process, improve the precision and quality of stamping parts, and reduce production costs.

[0020] 2. In the utility model, the spring force must be greater than the bending force, so as to ensure that when forming, the arc on the bent part is formed first, and then bent 90 degrees. The 90-degree R angle must be smooth, otherwise the rebound phenomenon after bending cannot be effectively reduced, and the phenomenon of pulling the material will occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1This is a mold opening state diagram of a narrow bending forming device that reduces product springback.

[0023] Figure 2 This is a diagram of the state when the upper die just contacts the product in a narrow bending forming device that reduces product springback.

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0025] Figure 4 This is a diagram of the mold closing state in a narrow bending forming device that reduces product springback.

[0026] Figure 5 This is a state diagram of a product being ejected from a mold in a narrow bending forming device that reduces product springback.

[0027] Figure 6 This is a diagram of the traditional bending springback process mentioned in the background art in a narrow bending forming device for reducing product springback.

[0028] Figure 7 A diagram of the bending springback process in a narrow bending forming device for reducing product springback.

[0029] Legend:

[0030] 1-bending male mold; 2-moving groove; 3-elevator; 4-inner release; 5-spring; 6-lower mold; 7-bending body; 8-bending part; 9-arc-shaped protrusion; 10-arc-shaped groove; 11-bending accommodating groove. DETAILED DESCRIPTION

[0031] 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 of 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.

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the embodiments of the present utility model, it should be noted that the terms "upper", "inner", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] See also Figure 1-7 The utility model provides a technical solution: a narrow bending forming device for reducing product springback, comprising:

[0038] A bending male die 1, wherein a movable groove 2 is arranged in the bending male die 1, a bottom of a push rod 3 is connected in the movable groove 2, an inner release 4 is arranged at the bottom of the push rod 3, the inner release 4 is movably connected in the movable groove 2, and a spring 5 is arranged on the push rod 3;

[0039] The lower die 6 is provided with a bending body 7, and the bending piece 8 is placed on the bending body 7 and is located directly below the inner stripping 4. It is convenient for the bending male die and the lower die to cooperate with each other to achieve bending, wherein the spring force must be greater than the bending force, so as to ensure that when forming, the arc on the bending piece is formed first, and then bent 90 degrees. The 90-degree R angle must be smooth, otherwise the rebound phenomenon after bending cannot be effectively reduced, and the phenomenon of pulling the material occurs.

[0040] The bottom of the inner strip 4 is provided with an arc-shaped protrusion 9, and the bending body 7 is provided with an arc-shaped groove 10, and the arc-shaped protrusion 9 and the arc-shaped groove 10 match each other. The narrow top of the bending part can be arc-shaped, which is convenient for the subsequent bending of the two sides and is not easy to rebound.

[0041] A bending accommodating groove 11 is also provided at the bottom of the bending male mold 1, and the bending accommodating groove 11 is located at the bottom of the moving groove 2 and communicates with the moving groove 2. It is convenient for the inner stripping to move along the moving groove, so that the bending body is against the bottom of the bending groove and bends both sides of the bending part.

[0042] The width of the bending accommodating groove 11 is greater than the width of the moving groove 2, and the width of the bending accommodating groove 11 is equal to the sum of the width of the bending body 7 and twice the thickness of the bending member 8, thereby ensuring the bending accuracy.

[0043] The depth of the bending accommodating groove 11 is greater than half of the height of the bending body 7. In the bending process, the bottom of the bending accommodating groove abuts against the lower bottom of the bent part after bending, further ensuring that the bent product will not rebound.

[0044] The tail of the bending accommodating groove 11 is in an arc shape that bends outwards, so as to provide a buffering process for the product to be bent during the bending process, thereby preventing the surface of the bent product from being damaged by sudden bending.

[0045] Working principle: A touch screen housing, a dust removal unit and a touch unit are set up. A PCB controller is set in the touch screen housing. The dust removal unit is located in the touch screen housing. The dust removal unit includes a micro motor, a micro fan and an air outlet plate. The micro motor drives the micro fan to fan the air to remove dust from the surface of the touch screen, thereby achieving heat dissipation and dust removal effects.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A narrow bending forming device for reducing product rebound, characterized in that: include: A bending male mold, wherein a movable groove is arranged in the bending male mold, the bottom of the ejector rod is connected in the movable groove, an inner release is arranged at the bottom of the ejector rod, the inner release is movably connected in the movable groove, and a spring is arranged on the ejector rod; A lower die is provided with a bending body, and a bending piece is placed on the bending body and is located directly below the inner stripping.

2. A narrow bending and forming device for reducing product rebound according to claim 1, characterized in that: The inner bottom is provided with an arc-shaped protrusion, and the bending body is provided with an arc-shaped groove, and the arc-shaped protrusion and the arc-shaped groove match each other.

3. A narrow bending forming device for reducing product rebound according to claim 2, characterized in that: A bending accommodating groove is also arranged in the bottom of the bending male mold, and the bending accommodating groove is located at the bottom of the moving groove and communicated with the moving groove.

4. A narrow bending forming device for reducing product rebound according to claim 3, characterized in that: The width of the bending accommodating groove is greater than the width of the moving groove, and the width of the bending accommodating groove is equal to the sum of the width of the bending body and twice the thickness of the bending piece.

5. A narrow bending and forming device for reducing product springback according to claim 4, characterized in that: The depth of the bending accommodating groove is greater than half of the height of the bending body.

6. A narrow bending and forming device for reducing product rebound according to claim 5, characterized in that: The tail portion of the bent accommodation groove is in an arc shape bending outwards.

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