An external water-cutting and concave mechanism for a bending die and a bending machine

Abstract

This application discloses an external water-cutting and undercutting mechanism and bending machine for a bending die, relating to the field of automotive parts bending technology. The external water-cutting and undercutting mechanism includes a bending fixture with a bending groove for bending externally water-cut products. An undercutting punch is also provided on the bending groove. An undercutting assembly below the bending fixture includes a guide, a shaping component, and a drive component. The drive component is rotatably connected to the shaping component. The shaping component includes a shaping part. The drive component moves the shaping part away from or towards the bending groove. The guide component adjusts the horizontal height of the shaping part. When the shaping component moves to the end of the guide component away from the bending groove, the shaping component can flip downwards to adjust the height of the shaping part to be lower than the lower side of the bending groove. When the shaping component moves towards the bending groove under the guidance of the guide component, the shaping part can rotate to face the undercutting punch. The external water-cutting and undercutting mechanism of this application enables the undercutting process.

Description

Technical Field

[0001] This application relates to the field of automotive parts bending technology, and in particular to an external water-cutting and concave mechanism for a bending die and a bending machine. Background Technology

[0002] The bending die is mounted on the bending machine, and the left and right chucks of the bending machine are mounted on the left and right extension arms. The extension arms rotate 6 revolutions. When the extruded straight strip is placed into the die and chuck, the chuck is clamped by the hydraulic cylinder. Then, the left and right extension arms pull the straight strip to bring the bending die's arc template up to it. Finally, the product and the template are completely in contact, completing the bending process. Then, the chuck is removed, the bent part is removed from the bending die, and the left and right extension arms return to their initial positions.

[0003] Traditionally, exterior water-cutting machines for car doors typically have two arcs: a large horizontal convex arc pointing backward and a small vertical convex arc pointing upward. Existing bending dies can easily complete the bending process because the bending template part is a large horizontal convex arc that follows the product's shape forward and a small vertical convex arc that follows the product's shape upward. The exterior water-cutting strip for car doors only needs to be pulled horizontally forward and vertically downward by the clamps and extension arms at both ends of the bending machine, and finally completely fit into the template. The bending and forming process is completed using the "convex" die.

[0004] However, with the advent of the new energy vehicle era, the appearance of cars has become more distinctive, and the design of car doors has become more curvaceous. Therefore, the water cut of the car door also needs to change. The current trend is that while the horizontal forward convex arc remains unchanged, local inverted concave shapes appear; while the vertical upward convex arc remains unchanged, local inverted concave structures appear. Existing bending dies cannot achieve the forming of the inverted concave structure after bending. Utility Model Content

[0005] This application aims to solve one of the aforementioned technical problems in the prior art. To this end, embodiments of this application provide an external water-cutting and recessing mechanism for a bending die.

[0006] This application also provides a bending machine.

[0007] According to an embodiment of the first aspect of this application, an external water-cutting undercutting mechanism for a bending die is provided, including a bending jig with a bending groove, the bending groove being used for bending external water-cut products, wherein an undercutting punch is also provided on the bending groove. The undercut assembly disposed below the bending fixture includes a guide, a shaping component, and a drive component. The drive component is rotatably connected to the shaping component. The shaping component includes a shaping part. The drive component is used to move the shaping part away from or towards the bending groove. The guide is used to adjust the horizontal height of the shaping part. When the shaping component moves to the end of the guide away from the bending groove, the shaping component can flip downward so that the height of the shaping part is adjusted to be lower than the lower side of the bending groove. When the shaping component moves towards the bending groove under the guidance of the guide, the shaping part can rotate to face the undercut punch.

[0008] The aforementioned undercutting mechanism for the external water-cutting die has at least the following advantages: The undercutting component is positioned below the bending fixture. During the bending process, the drive unit moves the shaping component to the end of the guide component away from the bending groove, causing the shaping component to flip downwards. The height of the shaping part is adjusted to be lower than the bending groove, preventing interference between the shaping part or the shaping component and the external water-cutting product during bending. When the external water-cutting product is bent and shaped, the drive unit moves the shaping component towards the bending groove, allowing the shaping part to align with the undercutting punch. As the drive unit continues to move, the shaping part presses the external water-cutting product against the undercutting punch to form an undercut structure. This application solves the undercutting process by combining the undercutting component with the undercutting punch without altering the original bending die, while maintaining the main bending process of the external water-cutting product. This saves costs and solves the problem of forming the undercut structure of the external water-cutting product.

[0009] According to the external water-cutting and recessing mechanism of the bending die according to the first aspect embodiment of this application, the shaping member further includes a guide portion, the shaping portion is connected to the guide portion, the guide member is provided with a guide groove adapted to the guide portion, the driving member can drive the guide portion into or out of the guide groove, and when the guide portion extends out of the guide groove, the shaping member can flip downward.

[0010] According to the external water-cutting and recessing mechanism of the bending die described in the first aspect of this application, a limiting part is provided at the end slot of the guide groove near the shaping part, and a guiding inclined surface is provided on the limiting part, the guiding inclined surface being used to limit the flipping angle of the guide part.

[0011] According to the external water-cutting and recessing mechanism of the bending die described in the first aspect embodiment of this application, the end of the guide member is further provided with a buffer structure, which is used to support the guide portion.

[0012] According to the external water-cutting and recessing mechanism of the bending die according to the first aspect embodiment of this application, the buffer structure includes a buffer layer and a spring-loaded support member, one end of the support member is fixed to the guide member, and the other end of the support member is provided with the buffer layer.

[0013] According to the external water-cutting and recessing mechanism of the bending mold in the first aspect embodiment of this application, the supporting member is made of carbon steel and the buffer layer is made of rubber.

[0014] According to the external water-cutting and recessing mechanism of the bending die according to the first aspect embodiment of this application, the driving member is a telescopic cylinder, the telescopic cylinder is fixed to the end of the guide member, and the cylinder rod of the telescopic cylinder is connected to the guide part in the guide groove.

[0015] According to the external water-cutting and concave mechanism of the bending die described in the first aspect embodiment of this application, the cylinder rod is connected to the guide part through a floating joint, wherein the guide part is rotatably connected to the floating joint, and the rotation center axis of the guide part is arranged in the horizontal direction.

[0016] According to the external water-cutting and recessing mechanism of the bending die described in the first aspect of this application, the guide portion is provided with a limiting groove for positioning and clamping the shaping portion, and the end of the shaping portion is placed in the limiting groove and then connected to the guide portion by bolts.

[0017] According to an embodiment of the third aspect of this application, a bending machine is provided, including the external water-cutting and concave mechanism of the bending die described above.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The present application will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a structural schematic diagram of the straight-strip external water-cutting product according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the external water-cutting product after bending and forming in the embodiments of this application; Figure 3 This is a schematic diagram of the external water-cutting and concave mechanism of the bending die in this embodiment of the application. Figure 1 ; Figure 4 This is a schematic diagram of the external water-cutting and concave mechanism of the bending die in this embodiment of the application. Figure 2 ; Figure 5 This is a schematic diagram of the external water-cutting and concave mechanism of the bending die in this embodiment of the application. Figure 3 ; Figure 6 This is a schematic diagram of the inverted concave component in an embodiment of this application. Figure 1 ; Figure 7 This is a schematic diagram of the inverted concave component in an embodiment of this application. Figure 2 ; Figure 8 This is a schematic diagram of the inverted concave component in an embodiment of this application. Figure 3 ; Figure 9 This is a schematic diagram of the inverted concave component in an embodiment of this application. Figure 4 ; Figure 10 This is a schematic diagram of the inverted concave component in an embodiment of this application. Figure 5 .

[0020] Reference numerals: External water-cutting product 100, bending part 110, undercut structure 120, mounting plate 201, bending jig 210, extension arm 300, undercut assembly 400, guide part 410, guide slope 411, telescopic cylinder 420, cylinder rod 421, floating joint 422, guide part 430, limiting groove 431, lifting part 440, buffer layer 441, shaping part 450. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0022] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0023] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0025] Figure 1 The product 100 is a straight-strip external water-cut product and has not undergone bending forming. Figure 2 The external water-cut product 100 after bending and forming includes a bent portion 110 and an undercut structure 120. The bending direction of the bent portion 110 is opposite to the concave direction of the undercut structure 120. Existing bending dies cannot form the undercut structure 120.

[0026] To solve the forming problem of the undercut structure 120, this application provides an external water-cutting undercutting mechanism for a bending die, which can be used for undercutting forming of external water-cut products 100.

[0027] like Figures 3 to 5 As shown, the external water-cutting and undercutting mechanism of the bending die includes a bending fixture 210 and an undercutting assembly 400. The bending fixture 210 is provided with a bending groove for bending the external water-cutting product 100. An undercutting punch is also provided on the bending groove. The undercutting assembly 400 is located below the bending fixture.

[0028] The undercut assembly 400 includes a guide 410, a shaping component, and a drive component. The drive component is rotatably connected to the shaping component. The shaping component includes a shaping part 450. The drive component is used to move the shaping part 450 away from or closer to the bending groove. The guide 410 is used to adjust the horizontal height of the shaping part 450. When the shaping component moves to the end of the guide 410 away from the bending groove, the shaping component can flip downward so that the height of the shaping part 450 is adjusted to be lower than the lower side of the bending groove. When the shaping component moves towards the bending groove under the guidance of the guide 410, the shaping part 450 can rotate to face the undercut punch.

[0029] The position of the shaping component is adjusted by the guide 410. When the undercut structure 120 is not required, the height of the shaping part 450 or the shaping component is lower than the bending groove. When the undercut structure 120 is required, the height of the shaping part 450 is adjusted to be aligned with the bending groove.

[0030] When the bending die is performing the bending operation, the driving component moves the shaping component to the end of the guide 410 away from the bending groove, causing the shaping component to flip downwards. The height of the shaping part 450 is adjusted to be lower than the bending groove, avoiding interference between the shaping part 450 or the shaping component and the outer water-cut product 100 during the bending process. When the outer water-cut product 100 is bent and shaped, the driving component moves the shaping component toward the bending groove, so that the shaping part 450 can be adjusted to be aligned with the inverted punch. As the driving component continues to move, the shaping part 450 can press the outer water-cut product 100 against the inverted punch to form the inverted structure 120.

[0031] In this application, while keeping the main bending process of the external water-cut product 100 unchanged, the undercutting process is achieved by using the undercutting component 400 and the undercutting punch without changing the original bending die. This saves costs and also solves the problem of forming the undercutting structure 120 of the external water-cut product 100.

[0032] In some embodiments, the shaping component further includes a guide portion 430, the shaping portion 450 is connected to the guide portion 430, and the guide member 410 is provided with a guide groove adapted to the guide portion 430. The guide groove restricts the movement direction of the guide portion 430. The driving member can drive the guide portion 430 into or out of the guide groove. When the guide portion 430 extends out of the guide groove, the shaping component can flip downward because the guide portion 430 is rotatably connected to the driving member, effectively adjusting the position of the shaping portion 450 and avoiding the setting of the undercut component 400 from affecting the original bending process.

[0033] like Figure 9 As shown, a limiting part is provided at the end of the guide groove near the forming part 450, and a guide slope 411 is provided on the limiting part. The guide slope 411 is used to limit the flipping angle of the guide part 430. When the driving member moves the guide part 430 away from the bending jig 210, at the moment the guide part 430 slides out of the guide groove, because the guide part 430 loses its restraint and because the guide part 430 is rotatably connected to the driving member, the guide part 430 will flip downward under the action of gravity. Due to the presence of the limiting part and the guide slope 411, the flipping angle of the guide part 430 is effectively limited, preventing the guide part 430 from flipping excessively and affecting the subsequent reset. In this embodiment, the inclination angle of the guide slope 411 can be set to 45°.

[0034] In some embodiments, such as Figures 6 to 8 As shown, the end of the guide member 410 is also provided with a buffer structure, which is used to support the guide part 430. Relying solely on the limiting part to restrict the shaping mechanism is somewhat inadequate, and long-term use will cause damage to the guide part 430 and affect its service life. The buffer structure is designed to prevent the shaping mechanism from directly hitting the limiting part and to reduce the impact of the flipping and descent.

[0035] In some embodiments, the buffer structure includes a buffer layer 441 and a spring-loaded support member 440. One end of the support member 440 is fixed to the guide member 410, and the other end of the support member 440 is provided with the buffer layer 441. The support member 440 is elastic and can absorb the impact of the shaping member's flipping and descending by using elastic deformation. Together with the buffer layer 441, it effectively protects the shaping mechanism. It should be noted that during the process of the shaping mechanism flipping into place, the guide part 430 first contacts the buffer layer 441, and the impact is mitigated by the buffer layer 441 and the support member 440. Finally, the guide part 430 slowly descends to fit against the guide ramp 411.

[0036] In some specific embodiments, the support member 440 is made of carbon steel. The support member 440, made of elastic metal, can provide a better cushioning effect, while the cushioning layer 441 is made of rubber.

[0037] In some other embodiments, such as Figure 9 and Figure 10 As shown, the driving component is a telescopic cylinder 420, which is fixed to the end of the guide component 410. The cylinder rod 421 of the telescopic cylinder 420 is connected to the guide part 430 in the guide groove.

[0038] The cylinder rod 421 is connected to the guide part 430 via a floating joint 422. The guide part 430 is rotatably connected to the floating joint 422, and the rotation center axis of the guide part 430 is set in the horizontal direction. This allows the guide part 430 to be tilted downwards under the action of gravity after it is disengaged from the guide groove.

[0039] In some embodiments, the guide portion 430 is provided with a limiting groove 431 for positioning and clamping the shaping portion 450. After the end of the shaping portion 450 is placed in the limiting groove 431, it is connected to the guide portion 430 by bolts. When the shaping portion 450 is worn, it can be quickly replaced, and the setting of the limiting groove 431 can improve assembly efficiency and positioning accuracy.

[0040] This application also provides a bending machine, which includes the external water-cutting and concave mechanism of the bending die described above.

[0041] In some specific embodiments, the bending machine also includes left and right extension arms 300 and mounting plate 201. The bending fixture 210 and the undercut assembly 400 are both mounted on the mounting plate 201. The extension arm 300 is provided with a chuck for clamping the outer water-cut product 100. The extension arm 300 clamps the outer water-cut product and pulls it towards the bending groove of the bending fixture 210, thereby completing the bending process under the shaping of the bending groove. Then, the undercut assembly 400 is used to form the undercut structure 120.

[0042] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A bending die external water-cutting and recessing mechanism, characterized in that: include A bending fixture is provided with a bending groove, which is used for bending of external water-cut products. The bending groove is also provided with an inverted punch. The undercut assembly disposed below the bending fixture includes a guide, a shaping component, and a drive component. The drive component is rotatably connected to the shaping component. The shaping component includes a shaping part. The drive component is used to move the shaping part away from or towards the bending groove. The guide is used to adjust the horizontal height of the shaping part. When the shaping component moves to the end of the guide away from the bending groove, the shaping component can flip downward so that the height of the shaping part is adjusted to be lower than the lower side of the bending groove. When the shaping component moves towards the bending groove under the guidance of the guide, the shaping part can rotate to face the undercut punch.

2. The external water-cutting and concave mechanism of the bending die according to claim 1, characterized in that: The shaping component also includes a guide portion, which is connected to the guide portion. The guide component is provided with a guide groove that is adapted to the guide portion. The driving component can drive the guide portion into or out of the guide groove. When the guide portion extends out of the guide groove, the shaping component can flip downward.

3. The external water-cutting and concave mechanism of the bending die according to claim 2, characterized in that: A limiting part is provided at the end of the guide groove near the shaping part, and a guiding inclined surface is provided on the limiting part to limit the flipping angle of the guide part.

4. The external water-cutting and countersinking mechanism of the bending die according to claim 2, characterized in that: The end of the guide member is also provided with a buffer structure, which is used to support the guide part.

5. The external water-cutting and countersinking mechanism of the bending die according to claim 4, characterized in that: The buffer structure includes a buffer layer and a rebounding support. One end of the support is fixed to the guide, and the other end of the support is provided with the buffer layer.

6. The external water-cutting and countersinking mechanism of the bending die according to claim 5, characterized in that: The support component is made of carbon steel, and the cushioning layer is made of rubber.

7. The external water-cutting and countersinking mechanism of the bending die according to claim 2, characterized in that: The driving component is a telescopic cylinder, which is fixed to the end of the guide component, and the cylinder rod of the telescopic cylinder is connected to the guide part in the guide groove.

8. The external water-cutting and countersinking mechanism of the bending die according to claim 7, characterized in that: The cylinder rod is connected to the guide part via a floating joint, wherein the guide part is rotatably connected to the floating joint, and the rotation center axis of the guide part is set in the horizontal direction.

9. The external water-cutting and countersinking mechanism of the bending die according to claim 2, characterized in that: The guide portion is provided with a limiting groove for positioning and clamping the shaping portion. The end of the shaping portion is placed in the limiting groove and then connected to the guide portion by bolts.

10. A bending machine, characterized in that: The external water-cutting and countersinking mechanism of the bending die as described in any one of claims 1 to 9.

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