Double-wheel bending die

Abstract

The utility model discloses a double-wheel bending die which comprises an upper die base and a lower die base, a bending block is arranged on the upper die base, and a bending assembly corresponding to the bending block is arranged on the lower die base. The bending assembly comprises an insert and a sliding block corresponding to the bending block, the insert is provided with a through groove penetrating through the two ends, rotating blocks are symmetrically arranged in the through groove, rolling wheels are arranged on the rotating blocks, the rolling wheels make contact with the sliding block so that the rolling wheels can move along the sliding block, and a limiting plate used for supporting a workpiece is arranged at the top end of the insert. According to the multi-step bending die, the bending block moves downwards to bend a workpiece to carry out first-step bending, second-step bending is carried out through the rolling wheels, and multi-step bending can be completed through the die.

Description

Technical Field

[0001] This utility model relates to the field of bending die technology, and in particular to a double-wheel bending die. Background Technology

[0002] The existing workpiece bending process mostly adopts the method of bending at a small angle first and then bending at a large angle. This processing method is slow and the bending angle is difficult to control. For workpieces with irregular shapes and multiple bends, due to the many bending steps, multiple molds need to be designed for different shape limits, which results in mold waste. Utility Model Content

[0003] To address the shortcomings mentioned above, this utility model provides a double-wheel bending mold.

[0004] To achieve the above objectives, this utility model provides a double-wheel bending die, including an upper die base and a lower die base. A bending block is provided on the upper die base, and a bending component corresponding to the bending block is provided on the lower die base.

[0005] The bending assembly includes an insert and a slider corresponding to the bending block. The insert has a through groove that extends through both ends. Rotating blocks are symmetrically arranged in the through groove. Rollers are provided on the rotating blocks. The rollers contact the sliders so that the rollers move along the sliders. A limiting plate for supporting the workpiece is provided on the top of the insert.

[0006] Preferably, the rotating block and the inner wall of the through groove are spaced apart to form a channel, and the upper mold base is provided with a bending wedge, which matches and corresponds to the channel.

[0007] Preferably, the lower end of the bending wedge is cut to form an inclined surface, and the upper end of the rotating block is provided with a slope that matches the inclined surface.

[0008] Preferably, a lifter for driving the movement of the slider is provided below the slider.

[0009] Preferably, the lifting device is a compression cylinder, a spring, or a linear slide.

[0010] Preferably, the rotating block is rotatably mounted on the insert via a rotating shaft.

[0011] Preferably, the height of the limiting plate is higher than the height of the insert.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention performs the first bending step by bending the workpiece by bending the bending block downwards, and then performs the second bending step by using rollers. In other words, this mold can complete multiple bending steps. Attached Figure Description

[0014] Figure 1 This is a front view of the double-wheel bending mold in this utility model;

[0015] Figure 2 This is a cross-sectional view of the double-wheel bending mold in this utility model;

[0016] Figure 3 This is a structural diagram of the insert component in the double-wheel bending mold of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The following is in conjunction with the appendix Figure 1-3 The present invention will be described in further detail as follows:

[0021] Reference Figure 1 This utility model provides a double-wheel bending mold, including an upper mold base 1 and a lower mold base 2. A bending block 3 is provided on the upper mold base 1, and a bending component 4 corresponding to the bending block 3 is provided on the lower mold base 2.

[0022] The bending assembly 4 includes an insert 41 and a slider 43 corresponding to the bending block 3. The insert 41 has a through groove 42 that runs through both ends. A rotating block 44 is symmetrically arranged in the through groove 42. A roller 45 is provided on the rotating block 44. The roller 45 contacts the slider 43 so that the roller 45 moves along the slider 43. A limiting plate 47 for supporting the workpiece is provided on the top of the insert 41.

[0023] Specifically, the upper mold base 1 and the lower mold base 2 are connected by guide posts. The upper mold base 1 includes an upper base plate, an upper middle template, and an upper template; a bending block 3 is disposed on the upper template, and bolts pass through the upper base plate and the upper middle template and are fixedly connected to the bending block 3. The lower mold base 2 includes a lower base plate, a pad plate, a lower middle template, and a lower template. Through holes are formed on the pad plate, the lower middle template, and the lower template, and inserts 41 are located in the through holes. Support blocks are symmetrically arranged below the lower base plate.

[0024] Reference Figure 2 and Figure 3 A channel is formed by the rotating block 44 and the inner wall of the through groove 42. A bent wedge 5 is provided on the upper mold base 1, and the bent wedge 5 corresponds to the channel. A portion of the lower end of the bent wedge 5 is cut to form an inclined surface 51. The upper end of the rotating block 44 has a ramp that matches the inclined surface 51. A lifter 46 for driving the movement of the slider 43 is provided below the slider 43. The lifter 46 is a compression cylinder, a spring, or a linear slide. The rotating block 44 is rotatably mounted on the insert 41 via a rotating shaft. The height of the limiting plate 47 is higher than the height of the insert 41.

[0025] Specifically, when the upper die holder 1 moves downward, it drives the bending block 3 and the bending wedge 5 to move downward. The workpiece is placed on the limiting plate 47. The bending block 3 contacts the workpiece and bends the workpiece downward. As the bending block 3 continues to move downward, the workpiece bends along the outer shape of the bending block 3 and contacts the slider 43 below, driving the slider 43 to move downward. At the same time, the bending wedge 5 extends into the channel and contacts the rotating block 44, driving the rotating block 44 to rotate towards the slider 43. The roller 45 contacts the slider 43 until it contacts the workpiece. The roller 45 squeezes the workpiece and fits the outer shape of the bending block 3, so that the workpiece forms a multi-step bend. When the bending is completed, the upper die holder 1 is withdrawn upward. The lower die holder 2 moves upward against the workpiece under the action of the lifting device 46. When the roller 45 is reset, the workpiece recovers the bending angle of 90 degrees under its own elasticity and comes out of the upper die holder 1, completing the workpiece bending.

[0026] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A double-wheel bending die, characterized in that, It includes an upper die base and a lower die base, wherein a bending block is provided on the upper die base and a bending component corresponding to the bending block is provided on the lower die base; The bending assembly includes an insert and a slider corresponding to the bending block. The insert has a through groove that extends through both ends. Rotating blocks are symmetrically arranged in the through groove. Rollers are provided on the rotating blocks. The rollers contact the sliders so that the rollers move along the sliders. A limiting plate for supporting the workpiece is provided on the top of the insert.

2. The double-wheel bending die as described in claim 1, characterized in that, The rotating block and the inner wall of the through groove are spaced apart to form a channel, and the upper mold base is provided with a bending wedge, which matches and corresponds to the channel.

3. The double-wheel bending die as described in claim 2, characterized in that, The lower end of the bending wedge is cut to form an inclined surface, and the upper end of the rotating block is provided with a slope that matches the inclined surface.

4. The double-wheel bending die as described in claim 1, characterized in that, A lifter is provided below the slider to drive its movement.

5. The double-wheel bending die as described in claim 1, characterized in that, The lifting device is a compression cylinder, a spring, or a linear slide.

6. The double-wheel bending die as described in claim 1, characterized in that, The rotating block is rotatably mounted on the insert via a rotating shaft.

7. The double-wheel bending die as described in claim 1, characterized in that, The height of the limiting plate is higher than the height of the insert.

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