Metal plate multi-angle bending device

Abstract

The utility model discloses a multi-angle bending device for a metal plate, which relates to the technical field of metal workpiece production and comprises a mounting frame, two rotating shafts and two lower dies are rotatably mounted on the mounting frame, the two lower dies are respectively fixed on the two rotating shafts, the upper surfaces of the two lower dies are positioned on the same horizontal plane, and the lower surfaces of the two lower dies are positioned on the same horizontal plane. The bottom of the upper die is a conical part with a preset angle, the upper die is located above the lower dies, the upper die is located at the midpoint line of the two lower dies, the two rotatable lower dies can follow different angles of the conical part of the upper die to achieve self-adaptive angle change, then the purpose of adapting to metal plates with different angles is achieved, the universal effect and the test efficiency of a device test are improved, and the test efficiency is improved. And the test cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal workpiece production, and more specifically to a multi-angle bending device for metal plates. Background Art

[0002] The bending performance of automotive sheet metal is one of the important indicators for evaluating the application characteristics of automotive sheet metal materials. The industry generally evaluates the bending limit and rebound characteristics of the material through a 90-degree V-bend test. However, the range of bending angles involved in the manufacturing process of automotive sheet metal body parts is relatively wide, and more bending angles need to be designed to comprehensively evaluate their bending limit and rebound characteristics.

[0003] For example, the patent number CN216669493U relates to a V-shaped bending test device with multiple fixed angles. The bending angle is relatively fixed, the device flexibility is low, and the device flexibility is low.

[0004] In summary, how to provide a bending device that can meet the multi-angle bending requirements of a plate is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a multi-angle bending device for metal sheets, which can bend sheets at more angles to meet the needs of users.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A multi-angle bending device for metal sheets, comprising:

[0008] A mounting frame, on which two rotating shafts are rotatably mounted;

[0009] Two lower molds, the two lower molds are respectively fixed to the two rotating shafts, and the upper surfaces of the two lower molds are located on the same horizontal plane;

[0010] An upper mold, the bottom of which is a tapered portion with a preset angle, is located above the lower molds, and is located at the midpoint line of the two lower molds.

[0011] The utility model further has a mounting hole on the top of the upper die, through which the upper die of different preset angles can be disassembled and replaced.

[0012] Furthermore, the utility model provides a tip at the top of the conical portion, and the included angle of the tip is smaller than a preset angle of the conical portion.

[0013] Furthermore, the present invention has two sides of the tip provided with notches opening toward the outside of the tapered portion.

[0014] Furthermore, in the present invention, the radius of the notch is greater than the radius of the top, and they are in a positive correlation.

[0015] Furthermore, the utility model provides bearings at the connection points between the two rotating shafts and the mounting frame.

[0016] Furthermore, the present invention has a minimum gap of less than 0.2 mm when the two lower molds rotate close to each other.

[0017] The present invention further includes:

[0018] A reset piece is used for resetting the two lower dies.

[0019] Furthermore, in the present invention, the reset member adopts an elastic structure.

[0020] Furthermore, in the present invention, the reset member is a spring or a rubber band, one end of the reset member is connected to the bottom of the lower mold, and the other end of the reset member is connected to the mounting bracket.

[0021] The utility model provides a multi-angle bending device for metal sheets, which installs a mounting frame on a stamping device and an upper die on a lower pressure column of the stamping device, and two rotating shafts are rotatably installed on the mounting frame, and the two lower dies are respectively fixed on the two rotating shafts, and the upper surfaces of the two lower dies are located on the same horizontal plane, and the bottom of the upper die is a tapered portion with a preset angle and is located above the lower die, and the upper die is located at the midpoint line of the two lower dies. When bending the plate, the plate is placed on the upper surface of the two lower dies, and at this time the upper die is driven downward by the stamping device. When the upper die contacts the plate, it forces the two lower dies to rotate in relative directions. When the inclination angles between the tapered portions of the two lower dies and the upper die are the same, the bending of the plate is achieved. When the plate needs to be bent at different angles, it is only necessary to adjust the preset angle of the tapered portion of the upper die. The two rotatable lower dies can follow the different angles of the tapered portion of the upper die to achieve adaptive angle changes, adapt to punches with different angles to evaluate the bending performance of the metal plate, improve the general effect and test efficiency of the device test, and reduce the cost of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the shaft side when the utility model is used as a whole;

[0024] Figure 2 This is a schematic diagram of the overall disassembled structure provided by the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the utility model provided by the front section when in overall use;

[0026] Figure 4 Provided by the utility model Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0027] Figure 5 This is a schematic diagram of the front cross-section structure of the upper die provided by the present invention when the upper die is 60;

[0028] Figure 6 This is a schematic diagram of the front cross-section structure of the upper die provided by the present invention when the angle is 90 degrees;

[0029] Figure 7 This is a schematic diagram of the front cross-section structure of the upper die provided by the present invention when the upper die is 120;

[0030] Figure 1-Figure 7 , the reference numerals include:

[0031] 1. Mounting frame; 2. Rotating shaft; 3. Lower die; 4. Upper die; 401. Conical portion; 402. Mounting hole; 403. Notch; 404. Center; 5. Reset member. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying 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.

[0033] The core of the utility model is to provide a multi-angle bending device for metal plates, which can bend plates at more angles to meet the needs of users.

[0034] Please refer to Figure 1 Figure 7 A multi-angle bending device for metal sheets includes a mounting frame 1, two lower dies 3 and an upper die 4. Two rotating shafts 2 are rotatably mounted on the mounting frame 1. The two lower dies 3 are respectively fixed to the two rotating shafts 2. The upper surfaces of the two lower dies 3 are located on the same horizontal plane. The bottom of the upper die 4 is a tapered portion 401 with a preset angle and is located above the lower die 3. The upper die 4 is located at the midpoint line of the two lower dies 3.

[0035] It should be noted that in the embodiment of the present invention, the top of the tapered portion 401 of the upper die 4 is located at the midpoint line of the two lower dies 3 and is perpendicular to the upper surfaces of the two lower dies 3, which is conducive to the bending forming of the specimen.

[0036] In addition, in the embodiment of the present invention, the minimum gap between the two lower dies 3 when they rotate close to each other is less than 0.2 mm. By minimizing the gap between the two lower dies 3, more effective support for the plate is ensured when the plate is bent, thereby improving the bending forming quality of the plate.

[0037] Optionally, in order to improve the smoothness of the two lower molds 3 during the rotation process, in some embodiments, bearings are provided at the connection between the two rotating shafts 2 and the mounting frame 1, and the bearings increase the smoothness of the rotation process of the rotating shaft 2.

[0038] Optionally, the preset angle of the upper mold 4 can be adjusted by replacing the upper mold 4 with a tapered portion 401 of a different angle. In some embodiments, a mounting hole 402 is provided on the top of the upper mold 4, and the upper mold 4 with a different preset angle can be disassembled and replaced through the mounting hole 402 to meet the requirements of bending different angles of different samples.

[0039] In other embodiments, the conical portion 401 of the upper mold 4 can be composed of two connecting plates with adjustable angles, that is, by adjusting the angles of the two connecting plates, the angle of the conical portion 401 can be adjusted, so that one upper mold 4 and two lower molds 3 can achieve the purpose of multiple different plate bending angles.

[0040] Optionally, in the above embodiment, the mounting hole 402 may adopt a structure with a polygonal cross section to limit the angle of the upper mold 4, thereby improving stability when bending the specimen.

[0041] When in use, the mounting frame 1 is mounted on the stamping equipment, and the upper die 4 is mounted on the lower pressure column of the stamping equipment. Two rotating shafts 2 are rotatably mounted on the mounting frame 1, and the two lower dies 3 are respectively fixed to the two rotating shafts 2. The upper surfaces of the two lower dies 3 are located on the same horizontal plane. The bottom of the upper die 4 is a conical portion 401 with a preset angle and is located above the lower die 3. The upper die 4 is located at the midpoint line of the two lower dies 3. When bending the plate, the plate is placed on the upper surface of the two lower dies 3. At this time, the upper die 4 is driven downward by the stamping equipment. When the upper die 4 contacts the plate Afterwards, the two lower dies 3 will be forced to rotate in relative directions. When the inclination angles between the two lower dies 3 and the tapered parts 401 of the upper die 4 are the same, the bending of the plate is achieved. When the plate needs to be bent at different angles, it is only necessary to adjust the preset angle of the tapered part 401 of the upper die 4. The two rotatable lower dies 3 can follow the different angles of the tapered part 401 of the upper die 4 to achieve adaptive angle changes, adapt to punches of different angles to evaluate the bending performance of metal plates, improve the general effect and test efficiency of the device test, and reduce the cost of the test.

[0042] Please refer to Figure 1 Figure 7 In order to improve the effect of angle forming of the plate, in some embodiments, a tip 404 is provided on the top of the conical portion 401, and the angle of the tip 404 is smaller than the preset angle of the conical portion 401. That is to say, by providing the tip 404 on the conical portion 401 of the upper mold 4, the contact area with the plate is reduced by the tip 404, thereby increasing the pressure on the plate and improving the efficiency of bending the plate.

[0043] Please refer to Figure 1 Figure 7 In order to reduce the high heat of the plate itself when bending the plate, which may cause the plate to be bent into an irregular shape, in some embodiments, notches 403 with openings facing the outside of the tapered portion 401 are provided on both sides of the top 404. That is to say, by providing the notches 403 on the tapered portion 401, when stamping and bending are performed, the heat generated during the bending process can be quickly dissipated through the notches 403, thereby reducing the impact on the bending process of the plate.

[0044] It should be noted that in the above embodiment, the radius of the notch 403 is greater than the radius of the tip 404 and is positively correlated to ensure the cooling performance of the plate.

[0045] Optionally, in some embodiments, the notch 403 may also have other shapes, such as a V-shaped or W-shaped cross-section, so as to increase the heat dissipation space of the plate.

[0046] Optionally, in some embodiments, the tapered portion 401 may be made of a heat-absorbing and heat-conductive material, such as an alloy material.

[0047] In other embodiments, in order to further improve the heat absorption efficiency of the bent portion of the plate and enable the upper mold 4 to quickly conduct heat and dissipate heat so that the plate can be continuously bent, a through hole can be set near the top 404 of the conical portion 401, and a heat pipe is inserted into the through hole. A cooling medium is provided inside the heat pipe. Through the flow of the cooling medium, the heat of the upper mold 4 can be quickly absorbed. When replacing a different upper mold 4, it is only necessary to take out the heat pipe and insert it into the upper mold 4 to be used.

[0048] Please refer to Figure 1 Figure 7 In order to improve the demolding efficiency after the plate is bent, in some embodiments, a reset member 5 is further included. The reset member 5 is used to reset the two lower molds 3. That is, under the action of the reset member 5, the two lower molds 3 are quickly reset. In the process of resetting and rotating the two lower molds 3, the bent plate is lifted up, thereby achieving rapid demolding of the plate.

[0049] Optionally, in some embodiments, the reset member 5 can be a counterweight block. Specifically, a counterweight block is installed at the bottom of the two lower molds 3. When the two lower molds 3 are in the initial position, the counterweight block keeps the upper surface of the lower mold 3 in a horizontal state. After the lower mold 3 completes the bending of the plate, the counterweight block drives the lower mold 3 to rotate to the initial position under the action of gravity, thereby realizing the reset of the lower mold 3.

[0050] In other embodiments, the reset member 5 adopts an elastic structure, that is, the reset member 5 is automatically reset by the action of the elastic structure.

[0051] Optionally, in some embodiments, the reset member 5 is a spring or a rubber band, one end of the reset member 5 is connected to the bottom of the lower mold 3, and the other end of the reset member 5 is connected to the mounting frame 1. Specifically, when the lower mold 3 is in the initial position, the reset member 5 is also in the initial position. When the lower mold 3 is in the position of bending the plate, the reset member 5 drives the lower mold 3 to complete the reset through its own elastic force, and realizes the demolding of the plate.

[0052] That is to say, the focus of the embodiment of the present invention is that: the mounting frame 1 is mounted on the stamping equipment, and the upper die 4 is mounted on the lower pressure column of the stamping equipment, two rotating shafts 2 are rotatably mounted on the mounting frame 1, and the two lower dies 3 are respectively fixed to the two rotating shafts 2, and the upper surfaces of the two lower dies 3 are located on the same horizontal plane, the bottom of the upper die 4 is a conical portion 401 with a preset angle, and is located above the lower die 3, and the upper die 4 is located at the midpoint line of the two lower dies 3. When bending the plate, the plate is placed on the upper surface of the two lower dies 3. At this time, the upper die 4 is driven downward by the stamping equipment. When After the upper die 4 contacts the plate, it will force the two lower dies 3 to rotate in relative directions. When the inclination angles between the two lower dies 3 and the tapered parts 401 of the upper die 4 are the same, the plate is bent. When the plate needs to be bent at different angles, it is only necessary to adjust the preset angle of the tapered part 401 of the upper die 4. The two rotatable lower dies 3 can follow the different angles of the tapered part 401 of the upper die 4 to achieve adaptive angle changes, adapt to punches of different angles to evaluate the bending performance of metal plates, improve the general effect and test efficiency of the device test, and reduce the cost of the test.

[0053] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0054] The above is a detailed introduction to the multi-angle bending device for metal sheets provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, various improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A multi-angle bending device for metal sheets, characterized in that: include: A mounting frame (1), wherein two rotating shafts (2) are rotatably mounted on the mounting frame (1); Two lower molds (3), the two lower molds (3) are respectively fixed to the two rotating shafts (2), and the upper surfaces of the two lower molds (3) are located on the same horizontal plane; An upper mold (4), the bottom of which is a tapered portion (401) at a preset angle, the upper mold (4) being located above the lower mold (3), and the upper mold (4) being located at the midpoint line of the two lower molds (3).

2. The multi-angle bending device for metal sheets according to claim 1, characterized in that: A mounting hole (402) is provided on the top of the upper mold (4), and the upper mold (4) with different preset angles can be disassembled and replaced through the mounting hole (402).

3. The multi-angle bending device for metal sheets according to claim 2, characterized in that: A tip (404) is provided at the top of the conical portion (401), and the included angle of the tip (404) is smaller than the preset angle of the conical portion (401).

4. The multi-angle bending device for metal sheets according to claim 3, characterized in that: Notches (403) opening toward the outside of the conical portion (401) are provided on both sides of the tip (404).

5. The multi-angle bending device for metal sheets according to claim 4, characterized in that: The radius of the notch (403) is greater than the radius of the top (404), and they are positively correlated.

6. The multi-angle bending device for metal sheets according to claim 1, characterized in that: Bearings are provided at the connections between the two rotating shafts (2) and the mounting frame (1).

7. The multi-angle bending device for metal sheets according to claim 6, characterized in that: When the two lower molds (3) rotate close to each other, the minimum gap is less than 0.2 mm.

8. A metal sheet multi-angle bending device according to any one of claims 1 to 7, characterized in that: Also includes: A reset member (5), wherein the reset member (5) is used for resetting the two lower molds (3).

9. The multi-angle bending device for metal sheets according to claim 8, characterized in that: The reset member (5) adopts an elastic structure.

10. The multi-angle bending device for metal sheets according to claim 9, characterized in that: The reset member (5) is a spring or a rubber band, one end of the reset member (5) is connected to the bottom of the lower mold (3), and the other end of the reset member (5) is connected to the mounting frame (1).

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