A multi-process integrated coiling and bending die

Abstract

The utility model discloses a kind of multi-pass process one's round bending die, including lower die component and the upper die of connecting stamping device, the lower end of the upper die is provided arc stamping head;The lower die component includes the lower die fixed base and lower die main seat of upper and lower opposite buckling, the upper surface of the lower die main seat is located the first bending positioning structure before first stamping in the side of first arc stamping groove is set. By setting the first bending positioning structure, before carrying out first bending, the sheet metal thin plate is pressed against the first bending positioning structure, then drives the upper die to move downward and bends, so as to be. The setting can facilitate confirmation stamping position, need not artificial experience to determine stamping position, facilitate the actual operation of staff, and realize unity to the quality of product.

Description

Technical Field

[0001] This utility model relates to the field of bending die technology, specifically to a rolling and bending die that integrates multiple processes. Background Technology

[0002] The applicant's products (large energy storage cabinets, etc.) require non-standard stainless steel sheet metal hinges on both sides as safety components, which are manufactured by the applicant itself. Traditional processes require the preparation of multiple specialized molds, resulting in long development cycles, high costs, and poor flexibility. More importantly, the operation of multiple specialized molds cannot complete the rolling process in one go, requiring transfer and making the process cumbersome and complicated. Chinese patent document CN219851513U discloses an integrated sheet metal bending and rolling mold, which includes a lower mold assembly and an upper mold assembly connected to a stamping device. The lower mold assembly includes a base and a top cover that are interlocked vertically, with an elastic element installed between the base and the top cover. The upper mold assembly is equipped with a stamping head, and the surface of the top cover has a first stamping groove that is vertically aligned with the stamping head. Second stamping grooves are provided on the sides of both the top cover and the base. A reset groove is reserved between the base and the top cover. This integrated sheet metal bending and rolling mold, through its integrated mold design, achieves rolling processing in three stamping operations. It allows a single mold to complete one rolling operation in three stamping operations, improving production efficiency. However, the aforementioned molds cannot accurately achieve the stamping position of sheet metal sheets during stamping, especially in the first and second stamping processes. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a multi-process rolling and bending die, including a lower die assembly and an upper die connected to a stamping device. The lower end of the upper die is provided with an arc-shaped stamping head. The lower die assembly includes a lower die fixing seat and a lower die main seat that are interlocked. An elastic component is provided between the lower die fixing seat and the lower die main seat to allow the lower die main seat to reset when there is no stamping force. The upper surface of the lower die main seat is provided with a first arc-shaped stamping groove that matches the arc-shaped stamping head. The bottom end face of the lower die main seat mates with the upper end face of the lower die fixing seat to form a second stamping groove. A first bending positioning structure is provided on one side of the arc-shaped stamping groove on the upper surface of the lower die main seat before the first stamping. By setting the first bending positioning structure, before the first bending, the sheet metal sheet is held against the first bending positioning structure, and then the upper die is driven downward to perform the bending. This design facilitates the confirmation of the stamping position, eliminates the need for manual experience to determine the stamping position, facilitates the actual operation of employees, and ensures consistent product quality.

[0004] Furthermore, the first bending positioning structure is a stepped structure formed on the upper surface of the lower die main seat on either side of the arc-shaped stamping groove. By setting the first bending positioning structure as a stepped structure, the structure is simple and easy to use; before stamping, one end of the sheet metal sheet is simply held against the stepped structure.

[0005] In one embodiment, a second bending positioning structure is further provided on the lower die main seat before the second stamping. By providing the second bending positioning structure, the purpose and effect of providing the first bending positioning structure can be achieved.

[0006] Furthermore, the second bending positioning structure is arranged on the same side as the first bending positioning structure. By arranging the two positioning structures on the same side, the operation becomes simpler and more convenient. After the first bend, the upper mold is raised, and the sheet metal sheet is directly pressed against the second bending positioning structure for a second bend.

[0007] In one embodiment, the second bending positioning structure is a stepped structure formed at the end of the lower die main seat on either side of the arc-shaped stamping groove.

[0008] In one embodiment, the system further includes limiting baffles installed at both ends of the lower die main seat, which slide along the front and rear ends of the lower die fixed seat. By installing opposing limiting baffles on the lower die main seat and sliding them along the front and rear ends of the lower die fixed seat, the problem of the lower die main seat deviating during the stamping process is avoided, thus ensuring product quality.

[0009] In one embodiment, threaded holes are provided at both the front and rear ends of the lower mold fixing seat; an elongated hole adapted to the threaded holes is provided near the lower end of the limiting baffle; a limiting bolt is also included, which passes through the elongated hole and is screwed into the threaded hole. This arrangement allows the limiting baffle to slide as close as possible to the surface at both ends of the lower mold fixing seat, ensuring that the upper mold main seat does not deviate and guaranteeing product quality.

[0010] In one embodiment, a height-adjusting bushing is further included, which is fitted onto the limiting bolt, and the axial length of the height-adjusting bushing is slightly greater than the thickness of the limiting baffle. By providing a height-adjusting bushing with a length greater than the thickness of the limiting baffle, the limiting baffle still has sliding and friction-free movement space after the limiting bolt is tightened, which ensures both product quality and reduces wear and damage to the mold.

[0011] In one embodiment, the elastic component includes a lower mold guide block disposed at the lower end of the lower mold main seat, a lower mold guide groove disposed on the lower mold fixed seat and cooperating with the lower mold guide block, and a return spring; the lower mold guide block has at least one return spring receiving cavity, the return spring extends into the return spring receiving cavity, and its other end is disposed in the lower mold guide groove. The elastic component includes a lower mold guide block, a guide groove, and a return spring, which are arranged in sections for easy processing. Furthermore, by providing a return spring receiving groove, the return spring is made to move axially as much as possible during deformation, reducing irregular deformation of the spring, ensuring the reciprocating elastic force of the spring, ensuring that the lower mold main seat does not deviate, and ensuring product quality.

[0012] In one embodiment, the lower mold guide block is independently configured and fixed to the lower end of the lower mold main seat by fixing bolts, and positioned by a combination of locating pins. By forming an independent lower mold guide block and positioning it, the lower mold guide block is not only easy to process, but also accurately positioned and easy to replace. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a structural schematic diagram of the multi-process rolling and bending mold of this utility model;

[0015] Figure 2 This is an exploded view of the multi-process rolling and bending mold of this utility model.

[0016] Figure 3 yes Figure 2 Enlarged view of B in the middle;

[0017] Figure 4 This is the front view of the multi-process rolling and bending mold of this utility model;

[0018] Figure 5 yes Figure 4 A cross-sectional view along the AA direction;

[0019] Figure 6 yes Figure 5 Enlarged view of C;

[0020] Figure 7 This is the first stamping process of the multi-process rolling and bending die of this utility model;

[0021] Figure 8 This is the second stamping process of the multi-process rolling and bending die of this utility model;

[0022] Figure 9 This is the third stamping process of the multi-process rolling and bending die of this utility model;

[0023] Figure 10 This is a structural diagram of the upper part of the second stamping groove of this utility model;

[0024] Figure 11 This is a structural diagram of the lower part of the second stamping groove of this utility model;

[0025] The reference numerals in the figure are as follows: 1-Upper die; 2-Arc-shaped stamping head; 3-Lower die fixing seat; 4-Lower die main seat; 5-Arc-shaped stamping groove; 6-Second stamping groove; 7-First bending positioning structure; 8-Second bending positioning structure; 9-Limiting baffle; 10-Threaded hole; 11-Elongated hole; 12-Limiting bolt; 13-Equal height bushing; 14-Lower die guide block; 15-Lower die guide groove; 16-Reset spring; 17-Reset spring receiving cavity; 18-Fixing bolt; 19-Positioning pin; 20-Positioning pin hole; 21-Washer; 22-Fixing bolt hole. Detailed Implementation

[0026] The present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Other embodiments derived by those skilled in the art from the embodiments of the present invention without inventive effort are all within the scope of protection of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 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. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should 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.

[0029] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] Example 1

[0031] like Figure 1-6As shown, this embodiment discloses a multi-process combined rolling and bending die. The multi-process combined means that the existing multiple dies for stamping are replaced by a single die stamping in this embodiment. It includes a lower die assembly that cooperates with the lower die base of the bending machine and an upper die 1 connected to the bending machine's stamping device. The lower end of the upper die 1 is provided with an arc-shaped stamping head 2, preferably with a semi-circular cross-section. The lower die assembly includes a lower die fixing seat 3 and a lower die main seat 4 that are interlocked. The lower die fixing seat 3 is fixedly fitted to the lower die base of the bending machine. An elastic component is provided between the lower die fixing seat 3 and the lower die main seat 4 to allow the lower die main seat 4 to reset when there is no stamping force. In the example, the elastic component includes a lower die guide block 14 disposed at the lower end of the lower die main seat 4, a lower die guide groove 15 disposed on the lower die fixing block and cooperating with the lower die guide block 14, and a return spring 16. The lower die guide block 14 and the lower die guide groove 15 preferably slide up and down under the pressure of the punching force and the elastic force of the return spring 16. Specifically, the lower die guide block 14 is disposed separately, and the lower die guide block 14 is provided with fixing bolt holes and at least one positioning pin hole 20. Hole 22 can be a smooth hole or a threaded hole. Preferably, there are two locating pin holes 20. The lower end of the lower mold main seat 4 is provided with a threaded hole adapted to the fixing bolt hole 22 and a locating hole adapted to the locating pin hole 20. During installation, first, the locating pin 19 is inserted through the locating pin hole into the locating hole for positioning. Then, the fixing bolt 18 is screwed through the fixing bolt hole 22 into the threaded hole at the lower end of the lower mold main seat 4 to fix the lower mold guide block 14. The lower mold fixing seat 3 is provided with a hole adapted to the fixing bolt hole 22. The lower die guide block 14 is adapted to the lower die guide groove 15. The lower die guide block 14 and the lower die guide groove 15 are preferably cuboids or cubes. At least one return spring receiving cavity 17 is provided within the lower die guide block 14. Preferably, two return spring receiving cavities 17 are provided; they can be through holes or holes. The central axis of the return spring receiving cavity 17 is preferably arranged in the same plane. One end of the return spring 16 extends into the return spring receiving cavity 17, and the other end abuts against the bottom of the lower die guide groove 15. This structure allows the lower die main seat 4 to compress the return spring and move downwards under punching pressure. When the punching pressure is removed, the lower die main seat 4 moves upwards to return to its initial state. The upper surface of the lower die main seat 4 is provided with an arc-shaped stamping groove 5 that matches the arc-shaped stamping head 2, preferably a strip-shaped stamping groove with a semi-circular cross-section; a portion of the bottom end face of the lower die main seat 4 and a portion of the upper end face of the lower die fixing seat 3 cooperate to form a second stamping groove 6, that is, the second stamping groove is composed of upper and lower parts. Of course, the second stamping groove 6 is preferably matched with the lower die guide block 14 during the stamping process. As for the upper part of the second stamping groove, it at least includes a portion of the connected semi-circular arc surface and a plane, such as... Figure 10 As shown, the plane is the tangent surface of a semi-circular (specifically, the upper semi-circular) arc surface. The location of their connection is determined by rotating the horizontal radius line counterclockwise to form an angle 1, where angle 1 is 45-60 degrees. This angle defines the connection point between the plane and the arc surface. The lower part of the second stamping groove needs to be formed in conjunction with the shape of the sheet metal after the second stamping. Figure 9 The shape after the second stamping is rotated clockwise so that part D fits or fits as closely as possible with the lower die guide block 14, forming an angle 2, such as... Figure 11 As shown, angle 2 is 20-30 degrees.

[0032] The upper surface of the lower die main seat 4 is provided with a first bending positioning structure 7 on one side of the arc-shaped stamping groove 5 before the first stamping. Preferably, it can be provided on both sides of the arc-shaped stamping groove 5. Specifically, for example... Figure 2 and 3 As shown, it is provided on the left side of the arc-shaped stamping groove 5. Regarding its structure, it can be independently installed and then fixed, or it can be integrally formed. In this embodiment, the first bending positioning structure 7 is a stepped structure forming the upper surface of the lower die main seat 4 on the left side of the arc-shaped stamping groove 5, as shown... Figure 2 and 3 As shown, the stepped structure only needs to have a certain height, just enough to block the end of the sheet metal sheet. Of course, the upper surface of the lower die main seat 4 on the right side of the arc-shaped stamping groove 5 that does not form the stepped structure can form a plane with the lower end face of the stepped structure at the same height. In this way, the sheet metal sheet is positioned more accurately and the operation is more convenient.

[0033] Furthermore, the lower die main seat 4 is also provided with a second bending positioning structure 8 before the second stamping, preferably located on the same side as the first bending positioning structure 7. As for the structure of the second bending positioning structure 8, it can be independently installed and then fixed, or it can be integrally formed. Specifically, for example... Figure 2 and 3 As shown, the second bending positioning structure 8 is located to the left of the first bending positioning structure 7, and its specific structure is also a stepped structure, with its bottom end face being the upper end face of the first bending positioning structure 7.

[0034] Furthermore, it also includes limiting baffles 9 installed at both ends of the lower die main seat 4. The installation method is varied, such as fixing with screws or bolts. The limiting baffles 9 slide up and down along the front and rear ends of the lower die fixing seat 3 under the impact force and the elastic force of the return spring 16. This setting can also ensure that the movement trajectory of the lower die guide block 14 does not deviate.

[0035] Furthermore, the lower mold fixing seat 4 has threaded holes 10 at both its front and rear ends, and the limiting baffle 9 has a vertical elongated hole 11 near its lower end that matches the threaded holes 10. It also includes a limiting bolt 12, which passes through the vertical elongated hole 11 and is screwed into the threaded hole 10. Preferably, it also includes a height-equalizing bushing 13, which is fitted onto the limiting bolt 12. The axial length of the height-equalizing bushing 13 is slightly greater than the thickness of the limiting baffle 9, for example, about 1 mm. In this case, when the limiting bolt 12 is tightened, the sliding limiting baffle 9 moves along a predetermined trajectory, reducing deviation. Furthermore, a washer 21 can be provided between the height-equalizing bushing 13 and the nut of the limiting bolt 12, such as... Figure 6 As shown, when the limiting bolt 12 is tightened, the distance between the limiting baffle 9 and the washer 21 can be about 1mm.

[0036] The specific locations of the first bending positioning structure and the second bending positioning structure should be designed according to the required rolled size.

[0037] The usage process of this utility model is as follows:

[0038] 1. Assemble and install the rolling and bending mold of Example 1; then, as follows: Figure 7 As shown in the left figure, the end of the sheet metal sheet that needs to be rolled is brought into contact with the first bending positioning structure. The upper die is driven to move downward, causing the arc-shaped punch head to press against the sheet metal sheet. The upper die continues to move downward, so that the bending point of the sheet metal sheet forms an arc-shaped structure, which is approximately a quarter circle (e.g., Figure 7 (As shown in the right figure), then lift the upper mold;

[0039] 2. Continue to press the bent sheet metal sheet against the second bending positioning structure (e.g.) Figure 8 (As shown in the left figure), then, the upper die is driven to move downwards, causing the arc-shaped punch head to press against the sheet metal sheet. The upper die continues to move downwards, causing the second bend of the sheet metal sheet to form an arc-shaped structure (as shown in the left figure). Figure 8 (As shown in the right figure), then lift the upper mold;

[0040] 3. Place the bent sheet metal sheet into the second stamping groove, ensuring that the arc-shaped structure formed by the first bend does not fit the end portion of the second stamping groove. Then remove the portion extending beyond the second stamping groove, ensuring the remaining portion fits as closely as possible to the lower part of the second stamping groove and the portion of the lower die guide block (e.g., ...). Figure 9 (As shown in the right figure), then, the upper die is driven to move downwards, so that the upper part of the second stamping groove applies pressure to the sheet metal sheet to bend and roll it into a circle, finally forming a rolled structure (as shown in the right figure). Figure 9(As shown in the right figure), finally, lift the upper mold and remove the sheet metal sheet.

[0041] This invention is applicable to components that require a rolled structure to be formed at the end of a sheet metal part, such as the shaft hole of a non-standard hinge.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A multi-process rolling and bending die, comprising a lower die assembly and an upper die connected to a stamping device, characterized in that, The lower end of the upper die is provided with an arc-shaped stamping head; the lower die assembly includes a lower die fixing seat and a lower die main seat that are interlocked with each other, and an elastic component is provided between the lower die fixing seat and the lower die main seat to reset the lower die main seat when there is no stamping force; the upper surface of the lower die main seat is provided with an arc-shaped stamping groove that matches the arc-shaped stamping head, and the bottom end face of the lower die main seat and the upper end face of the lower die fixing seat cooperate to form a second stamping groove; the upper surface of the lower die main seat is provided with a first bending positioning structure before the first stamping on one side of the arc-shaped stamping groove.

2. The rolling and bending die according to claim 1, characterized in that, The first bending positioning structure is a stepped structure formed on the upper surface of the lower die main seat on either side of the arc-shaped stamping groove.

3. The rolling and bending die according to claim 2, characterized in that, The lower die main seat is also provided with a second bending positioning structure before the second stamping.

4. The rolling and bending die according to claim 3, characterized in that, The second bending positioning structure is located on the same side as the first bending positioning structure.

5. The rolling and bending die according to claim 3 or 4, characterized in that, The second bending positioning structure is a stepped structure formed at the end of the lower die main seat on either side of the arc-shaped stamping groove.

6. The rolling and bending die according to any one of claims 1-3, characterized in that, It also includes limiting baffles installed at the front and rear ends of the lower mold main seat, the limiting baffles sliding along the front and rear ends of the lower mold fixed seat.

7. The rolling and bending die according to claim 6, characterized in that, The lower mold fixing base is provided with threaded holes at both the front and rear ends; the limiting baffle is provided with an elongated hole that matches the threaded holes near the lower end; it also includes a limiting bolt, which passes through the elongated hole and is screwed into the threaded hole.

8. The rolling and bending die according to claim 7, characterized in that, It also includes a height equalizing bushing, which is fitted onto the limiting bolt, and the axial length of the height equalizing bushing is slightly greater than the thickness of the limiting baffle.

9. The rolling and bending die according to claim 6, characterized in that, The elastic component includes a lower mold guide block disposed at the lower end of the lower mold main seat, a lower mold guide groove disposed on the lower mold fixed seat and cooperating with the lower mold guide block, and a reset spring; at least one reset spring receiving cavity is provided in the lower mold guide block, the reset spring extends into the reset spring receiving cavity, and its other end is disposed in the lower mold guide groove.

10. The rolling and bending die according to claim 9, characterized in that, The lower mold guide block is independently set and is fixed to the lower end of the lower mold main seat by fixing bolts and positioned by a combination of positioning pins.

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