Die bending structure capable of preventing appearance surface from being scratched

Abstract

The utility model relates to the technical field of die bending, in particular to a die bending structure capable of preventing an appearance surface from being scratched, which comprises a mounting plate, a bottom plate used for supporting and fixing is arranged at the lower end of the mounting plate, a bending component used for preventing the bent appearance of a product from being scratched is arranged at the upper end of the mounting plate, and the bending component comprises a bending male die. A placement groove is formed in one side of the bending male die, a rolling tungsten steel bar roller is adopted at the opening of the bending female die, a product rolls on the surface of a tungsten steel bar when being bent, the bending protection plate is tightly attached to bending areas on the two sides of the product, and when the bending action starts, the bending male die firstly reaches the bending position, the sliding block moves forwards to reach the bending position, and then the product is bent. In the whole bending process, the product passes through the tungsten steel bar, and the surface of the product is provided with the protective film, so that the surface of the bent product cannot be scratched, and the defects of scratches and the like on the surface of the product are avoided.

Description

Technical Field

[0001] This utility model relates to the field of mold bending technology, specifically a mold bending structure to prevent scratches on the appearance surface. Background Technology

[0002] In industries such as sheet metal processing, die bending is a common forming process. This technology is widely used in industries with high requirements for product appearance quality. In the home appliance industry, it is used to manufacture the outer shells of refrigerators, air conditioners, washing machines, etc. In the electronics industry, it is used to process the outer shells and internal structural parts of electronic products such as mobile phones, tablets, and laptops. In the automotive manufacturing industry, it can be used for bending and forming automotive body panels, engine hoods, and other components.

[0003] In existing mold equipment, both the mold making process and the product debugging process may produce processing errors. These errors can easily cause bending and scratching problems during product stamping. Currently, in order to reduce product costs, many products no longer undergo post-processing of the appearance, but instead directly use pre-treated sheet metal for stamping. In this case, if the appearance parts are scratched during the stamping process, the expected appearance requirements will not be met, resulting in defects such as scratches and marks on the product surface. Utility Model Content

[0004] The purpose of this invention is to provide a mold bending structure that prevents scratches on the outer surface, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mold bending structure for preventing scratches on the appearance surface, comprising a base plate for supporting and fixing the lower end of the mounting plate, and a bending component for preventing scratches on the appearance of the product during bending at the upper end of the mounting plate.

[0006] As a further preferred embodiment of this technical solution, the bending assembly includes a bending punch, one side of which has a placement groove, and the other side of which has an inclined sliding groove, with an inclined sliding block slidably connected inside the inclined sliding groove.

[0007] As a further preferred embodiment of this technical solution, a connecting block is provided at one end of the bending punch, and fixing blocks are fixedly installed on both sides of the connecting block. A bending guard plate is provided at one end of the fixing block, and the bending guard plate contacts both sides of the bending die.

[0008] As a further preferred embodiment of this technical solution, the inside of the bending guard plate is provided with a slot, a locking block is fixedly connected inside the slot, a fixing block is fixedly connected to one end of the bending guard plate, and a roller is rotatably sleeved inside the locking block, the roller being made of tungsten steel.

[0009] As a further preferred embodiment of this technical solution, a positioning block is provided at the upper end of the bending die.

[0010] As a further preferred embodiment of this technical solution, one end of the bending guard plate is fixedly connected to both sides of the bending die.

[0011] This utility model provides a mold bending structure to prevent scratches on the outer surface, which has the following beneficial effects:

[0012] This invention utilizes a rolling tungsten carbide rod roller at the rounded corner of the bending die. During bending, the product rolls on the surface of the tungsten carbide rod, and the bending guard plate closely fits the bending areas on both sides of the product. At the start of the bending action, the bending punch reaches the bending position first, followed by the slider moving forward to the bending position. Throughout the bending process, the product passes over the tungsten carbide rod, preventing scratches and abrasions on the product surface. This design also limits outward expansion of the material during deformation. The bending die employs a sliding structure; during the bending action, the punch reaches the bending position first to fix the product, and then the die slider moves forward, bending the product to less than 90°. The bending guard plate protects the rounded corner material from being squeezed outward during deformation throughout the bending process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the slider and bending guard plate of this utility model;

[0015] Figure 3 This is an exploded view of the bending component of this utility model;

[0016] Figure 4 This is a schematic diagram of the inclined sliding groove, inclined sliding block, and placement groove of this utility model.

[0017] In the diagram: 1. Mounting plate; 2. Base plate; 3. Bending assembly; 31. Bending punch; 32. Placement groove; 33. Fixing block; 34. Bending guard plate; 35. Slot; 36. Locking block; 37. Roller; 38. Bending die; 39. Positioning block; 311. Inclined sliding block; 312. Inclined slide groove; 313. Connecting block. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] This utility model provides a technical solution: such as Figure 1As shown in this embodiment, a mold bending structure for preventing scratches on the appearance surface includes a mounting plate 1 with a base plate 2 for supporting and fixing at the lower end, and a bending component 3 for preventing scratches on the appearance of the product when bending at the upper end.

[0020] like Figures 2 to 4 As shown, the bending assembly 3 includes a bending punch 31. A placement groove 32 is provided inside one side of the bending punch 31, and an inclined sliding groove 312 is provided inside the other side of the bending punch 31. An inclined sliding block 311 is slidably connected inside the inclined sliding groove 312. A connecting block 313 is provided at one end of the bending punch 31. Fixing blocks 33 are fixedly installed at both ends of the connecting block 313. A bending guard plate 34 is provided at one end of the fixing block 33. The bending guard plate 34 contacts both sides of the bending die 38. A slot 35 is provided inside the bending guard plate 34. A locking block 36 is fixedly connected inside the slot 35. A fixing block 33 is fixedly connected at one end of the bending guard plate 34. A roller 37 is rotatably sleeved inside the locking block 36. The roller 37 is a tungsten steel rod that rolls at the opening of the bending die 38. The roller 37 is made of tungsten steel.

[0021] Furthermore, such as Figure 3 As shown, a positioning block 39 is provided at the upper end of the bending die 38, and one end of the bending guard plate 34 is fixedly connected to both sides of the bending die 38.

[0022] In this solution, the operator places both ends of the product inside the positioning block 39 and the bending punch 31, respectively. Then, the positioning block 39 is moved, which in turn moves the inclined sliding block 311 within the inclined sliding groove 312, further pushing the bending punch 31 to move. The product is clamped and fixed by moving the bending punch 31 and the positioning block 39. The bending die 38 has a sliding structure, and the rounded corners of the bending notch are made of a rolling tungsten steel rod. When the bending action begins, the bending punch 31 reaches the bending position first, and the bending die 38 completes the bending of the product. After bending, the product passes over the tungsten carbide rod throughout the bending process. Combined with the protective film on the product's surface, the bent product surface will not be scratched. If the product already has bending structures on both sides, protective plates can be installed on both sides to protect the bending corners. The product moves downwards and slides across roller 37 to complete the bending. After bending to the bottom, the upper die obliquely pushes the bending die 38 forward, bending the product angle to less than 90°. After springback, the desired angle is achieved. Throughout the bending process, the product slides across roller 37, which is made of tungsten carbide, providing wear resistance and product protection. The bending protective plate 34 protects the rounded corner material from being squeezed outwards during the entire bending process.

[0023] The bending die 38 uses a rolling tungsten carbide rod roller 37 at the rounded corner of the opening. During bending, the product rolls on the surface of the tungsten carbide rod. The bending guard plate 34 closely fits the bending areas on both sides of the product. When the bending action begins, the bending punch 31 reaches the bending position first. Throughout the bending process, the product passes over the tungsten carbide rod, which rolls on the product. In addition, the product itself has a protective film on its surface, so the surface of the bent product will not be scratched, avoiding defects such as scratches and abrasions on the product surface. It also restricts the outward expansion of the material during deformation. The bending die 38 adopts a sliding structure. During the bending action, the punch reaches the bending position first to fix the product. Then the bending die 38 moves forward to bend the product to less than 90°. The bending guard plate 34 protects the rounded corner material of the product from being squeezed outward when deformation occurs during the entire bending process.

[0024] This utility model provides a mold bending structure to prevent scratches on the appearance surface. The specific working principle is as follows: The operator places both ends of the product in the groove 32 of the positioning block 39 and the bending punch 31. Then, the positioning block 39 is moved, which in turn moves the inclined sliding block 311. The inclined sliding block 311 moves inside the inclined sliding groove 312, further pushing the bending punch 31 to move. The product is clamped and fixed by moving the bending punch 31 and the positioning block 39. The bending die 38 is made into a sliding structure, and the rounded corner of the bending notch is made into a tungsten steel rod that can roll. When the bending action starts, the bending punch 31 reaches the bending position first. After the bending die 38 completes the bending of the product, the product passes on the tungsten steel rod during the entire bending process. In addition, the product itself has a protective film on its surface, so the surface of the bent product will not be scratched.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold bending structure for preventing scratches on the outer surface, comprising a mounting plate (1), characterized in that: The lower end of the mounting plate (1) is provided with a base plate (2) for supporting and fixing, and the upper end of the mounting plate (1) is provided with a bending component (3) for preventing the product from being bent and scratched.

2. The mold bending structure for preventing scratches on the outer surface according to claim 1, characterized in that: The bending assembly (3) includes a bending punch (31), a placement groove (32) is provided inside one side of the bending punch (31), and an inclined sliding groove (312) is provided inside the other side of the bending punch (31). An inclined sliding block (311) is slidably connected inside the inclined sliding groove (312).

3. The mold bending structure for preventing scratches on the outer surface according to claim 2, characterized in that: One end of the bending punch (31) is provided with a connecting block (313), and two ends of the connecting block (313) are fixedly installed with fixing blocks (33). One end of the fixing block (33) is provided with a bending guard plate (34), and the bending guard plate (34) is in contact with both sides of the bending die (38).

4. The mold bending structure for preventing scratches on the outer surface according to claim 3, characterized in that: The inside of the bending guard plate (34) is provided with a slot (35), and a locking block (36) is fixedly connected inside the slot (35). A fixing block (33) is fixedly connected to one end of the bending guard plate (34). A roller (37) is rotatably sleeved inside the locking block (36). The roller (37) is made of tungsten steel.

5. The mold bending structure for preventing scratches on the outer surface according to claim 4, characterized in that: The upper end of the bending die (38) is provided with a positioning block (39).

6. The mold bending structure for preventing scratches on the outer surface according to claim 5, characterized in that: One end of the bending guard plate (34) is fixedly connected to both sides of the bending die (38).

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