Bending die for thin plate

Abstract

The utility model relates to the technical field of sheet bending, in particular to a bending die for a sheet, which comprises a bottom plate, a bending mechanism and a guide device, the bending mechanism and the guide device are both arranged on the bottom plate, the top of the bending mechanism is connected with a top plate, and the guide device is connected with the top plate; the bending mechanism comprises a lower die and an upper die, the lower die is fixed on the bottom plate, a groove body corresponding to the bending shape of a workpiece is formed in the lower die, the upper die is fixed on the top plate, and the shape of the bottom plate of the upper die is matched with that of the groove body of the lower die. The bending mechanism and the guide device are arranged on the bottom plate, the top plate is arranged on the bending mechanism, and a workpiece blank is arranged on the bending mechanism, so that batch production is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of thin plate bending technology, and in particular to a bending die for thin plates. Background Technology

[0002] Side clamps are an important component of storage and transportation devices, consisting of U-shaped and L-shaped ends, with the specific structure as follows: Figure 1 As shown, the workpiece has a complex shape, is thin, and requires high dimensional accuracy. The distance between the upper surface of the workpiece and the center of the arc is particularly critical. The traditional manufacturing method involves using tools for making mandrels in the shaping process of the side-mounted tube clamp workpiece, such as... Figure 2 As shown, it includes a base, an L-shaped positioning block, a U-shaped positioning block, and positioning bolts. The L-shaped and U-shaped positioning blocks are fixed to the base, and the positioning bolts are positioned relative to the U-shaped positioning blocks, rotatably connected to the base. After the workpiece blank is heated with an oxy-acetylene torch, both ends of the workpiece blank are manually wound onto the L-shaped and U-shaped positioning blocks before bending. This processing method cannot guarantee the positional accuracy of the side clamps, resulting in low efficiency and high labor intensity. The quality of manually bent products cannot be guaranteed, which is detrimental to mass production. Therefore, a dedicated bending device that facilitates mass production is urgently needed. Summary of the Invention

[0003] To address the problem that existing bending devices cannot guarantee accuracy and are not conducive to mass production, this utility model provides a bending die for thin plates. By setting a guide device and a bending mechanism on the base plate, the workpiece is placed on the bending mechanism and positioned by the workpiece positioning device, so that the workpiece blank is bent and shaped, which is convenient for mass production.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A bending die for thin sheet metal includes a base plate, a bending mechanism, and a guiding device. Both the bending mechanism and the guiding device are mounted on the base plate. A top plate is connected to the top of the bending mechanism, and the guiding device is connected to the top plate. The bending mechanism includes a lower die and an upper die. The lower die is fixed to the base plate and has a groove corresponding to the bending shape of the workpiece. A workpiece positioning device is also provided on the lower die. The upper die is fixed to the top plate, and the shape of the upper die's base plate matches the shape of the groove in the lower die. By providing a guiding device and a bending mechanism on the base plate, and fixing the top plate on the upper part of the bending mechanism, the workpiece is easily bent and formed. Simultaneously, the workpiece positioning device on the lower die improves workpiece positioning accuracy and facilitates mass production.

[0006] Furthermore, the guiding device comprises two sets, each set positioned on either side of the bending mechanism. Each set includes a guide post, a guide sleeve, and a compression spring. The guide sleeve is fixed to the lower part of the top plate. One end of the guide post is fixedly connected to the bottom plate, and the other end is slidably connected to the guide sleeve. The compression spring is fitted around the outside of the guide post, with one end fixedly connected to the bottom of the guide sleeve and the other end fixedly connected to the bottom plate. Through the guiding device, the guide post provides rigid constraints to prevent misalignment during processing, thus preventing uneven loading or deformation of the bending mechanism and ensuring the bending angle and workpiece shape. The compression spring reduces the risk of rigid collisions within the bending mechanism.

[0007] Furthermore, the workpiece positioning device includes a first side baffle and a second side baffle. The first side baffle is disposed on the side of the lower die along its length and is fixedly connected to the lower die. There are two second side baffles, each disposed on the side of the lower die along its width and fixedly connected to the lower die. The arrangement of the first and second side baffles facilitates the positioning of the workpiece during assembly, improves processing accuracy, and increases production efficiency.

[0008] Furthermore, the top of the first side baffle is higher than the top of the lower mold, and the top of the second side baffle is higher than the top of the lower mold.

[0009] Furthermore, the upper mold includes upper mold one and upper mold two. Upper mold one has a U-shaped protrusion fixed to its bottom corresponding to the U-shaped end of the workpiece, and upper mold two has a V-shaped protrusion fixed to its bottom corresponding to the L-shaped end of the workpiece. The lower mold has a groove one that mates with upper mold one, and a groove two that mates with upper mold two. The arrangement of upper mold one, upper mold two, groove one, and groove two facilitates the simultaneous processing of different ends of two workpieces, improving production efficiency.

[0010] Furthermore, the lower mold is provided with a placement groove, which is used to place the formed end of the processed workpiece, so as to facilitate the positioning of the unprocessed end when the L-shaped end of the workpiece is being processed, without damaging the shape of the processed U-shaped end.

[0011] The beneficial effects of this utility model through the above technical solution are:

[0012] This invention facilitates workpiece positioning, improves processing accuracy, and enables mass production by incorporating a guiding device and a bending mechanism on the base plate, and a workpiece positioning device on the lower die of the bending mechanism. Furthermore, by setting a first side baffle and two second side baffles on the workpiece, this invention enables simultaneous and rapid positioning of two workpieces, improving production efficiency. Finally, by configuring an upper die, an upper die, a first groove, and a second groove, this invention allows for the simultaneous processing of two workpieces, further enhancing production efficiency. Attached Figure Description

[0013] Figure 1 These are schematic diagrams of the side pipe clamp from the front and top views.

[0014] Figure 2 This is a schematic diagram of an existing bending mechanism.

[0015] Figure 3 This is a schematic diagram of the structure of a bending die for thin sheet metal parts according to the present invention.

[0016] Figure 4 This utility model relates to a bending die for thin sheet metal parts. Figure 3 A structural schematic diagram of the side view.

[0017] Figure 5 This is a cross-sectional view of a bending die for thin sheet metal according to this utility model.

[0018] The attached diagram is labeled as follows: 1. Side baffle 2, 2. Compression spring, 3. Lower mold, 4. Guide post, 5. Base plate, 6. Upper mold 1, 7. Upper mold 2, 8. Top plate, 9. Guide sleeve, 10. Side baffle 1, 11. Workpiece, 12. Base, 13. L-shaped positioning block, 14. Positioning screw, 15. Placement groove, 16. U-shaped positioning block. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0020] like Figures 3-5 As shown, a bending die for thin sheet metal includes a base plate 5, a bending mechanism, and a guide device. The bending mechanism and the guide device are both mounted on the base plate 5. A top plate 8 is connected to the top of the bending mechanism, and the guide device is connected to the top plate 8.

[0021] The guiding device consists of two sets, respectively located on both sides of the bending mechanism. Each set includes a guide post 4, a guide sleeve 9, and a compression spring 2. The guide sleeve 9 is fixed to the lower part of the top plate 8. One end of the guide post 4 is fixedly connected to the bottom plate 5, and the other end is slidably connected to the guide sleeve 9. The compression spring 2 is fitted onto the outside of the guide post 4, with one end fixedly connected to the bottom of the guide sleeve 9 and the other end fixedly connected to the bottom plate 5. Through the setting of the guiding device, the guide post 4 provides rigid constraint to prevent processing misalignment from causing uneven loading or deformation of the bending mechanism, ensuring the bending angle and the shape of the workpiece 11. The compression spring 2 reduces the risk of rigid collisions in the bending mechanism.

[0022] The bending mechanism includes a lower die 3 and an upper die. A groove is provided on the base plate 5. The bottom of the lower die 3 is fixed in the groove. A groove adapted to the bending shape of the workpiece 11 is provided on the upper part of the lower die 3. The upper die is fixed on the top plate 8. The shape of the lower part of the upper die is adapted to the shape of the groove of the lower die 3.

[0023] To improve the positioning accuracy of workpiece 11, a workpiece positioning device is also provided on the lower mold 3. This device includes a first side baffle 10 and a second side baffle 1. The first side baffle 10 is located on the side of the lower mold 3 along its length and is fixed to the lower mold 3 with bolts. The top of the first side baffle 10 is higher than the top of the lower mold 3. Specifically, the distance between the top of the lower mold 3 and the top of the first side baffle 10 is greater than the thickness of the workpiece 11. This facilitates side positioning of the workpiece 11. Second side baffles 1 are provided in both width directions of the lower mold 3. Both second side baffles 1 are fixedly connected to the lower mold 3 with bolts. The top of the second side baffle 1 is higher than the top of the lower mold 3, and the distance between the top of the second side baffle 1 and the top of the lower mold 3 is greater than the thickness of the workpiece 11. This facilitates rapid end positioning of the workpiece 11 and improves efficiency.

[0024] To further improve work efficiency and facilitate the processing of other workpieces 11 ends while processing one end of workpiece 11, the upper mold includes an upper mold 6 and an upper mold 7. Both upper molds 6 and 7 are fixed to the lower part of the top plate 8. The bottom of the upper mold 6 has a U-shaped protrusion that mates with the concave surface of the U-shaped end of workpiece 11. The lower mold 3 has a U-shaped groove corresponding to the upper mold 6, which mates with the convex surface of the U-shaped end of workpiece 11. The upper mold 6 and the groove facilitate the processing of the U-shaped end of workpiece 11. The lower part of the upper mold 7 has a V-shaped protrusion that mates with the concave surface of the L-shaped end of workpiece 11. The angle of the V-shaped protrusion is 90°. The lower mold 3 has a groove corresponding to the upper mold 7. The groove is a V-shaped structure that mates with the convex surface of the L-shaped end of workpiece 11. The included angle between the two sides of the groove is 90 degrees. The upper mold 2 7 and the groove 2 are designed to facilitate the processing of the L-shaped end of the workpiece 11. In order to prevent the already processed U-shaped end from deforming and affecting the positioning accuracy of the L-shaped end during the processing of the workpiece 11, the lower mold 3 is also provided with a placement groove 15 for placing the already processed U-shaped end. The width of the placement groove 15 is greater than the bending length of the U-shaped end, and the depth of the placement groove 15 is greater than the diameter of the convex surface of the U-shaped end.

[0025] When processing is required, the base plate 5 is placed on a device capable of transmitting pressure. This utility model uses a hydraulic press. The base plate 5 is fixed to the worktable of the hydraulic press. One end of the workpiece 11 to be processed is placed in the first groove. The side of the workpiece 11 to be processed is attached to the side baffle 10 to position the side of the workpiece 11. The end face of the workpiece 11 to be processed is attached to and aligned with the adjacent side baffle 1 of the first groove to position the processing end of the workpiece 11. A pad can be fixed on the upper part of the top plate 8 to increase the sliding distance of the guide post 4. The height of the pad is greater than the thickness of the workpiece 11. The top plate 8 is pressed down by the hydraulic press, and the top plate 8 drives the upper mold 6 to move downward, so that the workpiece 11 is bent into a U-shaped structure by pressure. The unprocessed end of the workpiece 11 with the U-shaped end is placed on the upper part of the second tank. The processed U-shaped end is placed in the placement slot 15. The end face of the unprocessed end is aligned and attached to the adjacent side baffle 1. The side of the workpiece 11 is attached and positioned to the side baffle 10. After the current workpiece is positioned, the new unprocessed workpiece 11 can be positioned on the first tank according to the processing method of the U-shaped end. When processing two workpieces at the same time, the length of the lower die 3 is greater than the sum of the lengths of the two workpiece blanks. The top plate 8 is pressed down by the hydraulic press, which drives the upper die 6 and the upper die 7 to move so that the two workpieces 11 can be bent at the same time to complete the bending of the L-shaped end and the U-shaped end.

[0026] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A bending die for thin sheet metal parts, characterized in that, The device includes a base plate (5), a bending mechanism and a guide device. The bending mechanism and the guide device are both set on the base plate (5). The top of the bending mechanism is connected to a top plate (8), and the guide device is connected to the top plate (8). The bending mechanism includes a lower die (3) and an upper die. The lower die (3) is fixed on the base plate (5). The lower die (3) has a groove corresponding to the bending shape of the workpiece (11). The lower die (3) is provided with a workpiece positioning device. The upper die is fixed on the top plate (8). The bottom shape of the upper die matches the groove shape of the lower die (3).

2. A bending die for thin sheet metal according to claim 1, characterized in that, The guiding device consists of two sets, which are respectively set on both sides of the bending mechanism. Each set of the guiding device includes a guide post (4), a guide sleeve (9), and a compression spring (2). The guide sleeve (9) is fixed to the lower part of the top plate (8). One end of the guide post (4) is fixedly connected to the bottom plate (5), and the other end is slidably connected to the guide sleeve (9). The compression spring (2) is sleeved on the outside of the guide post (4). One end of the compression spring (2) is fixedly connected to the bottom of the guide sleeve (9), and the other end is fixedly connected to the bottom plate (5).

3. A bending die for thin sheet metal according to claim 1, characterized in that, The workpiece positioning device includes a first side baffle (10) and a second side baffle (1). The first side baffle (10) is disposed on the side of the lower mold (3) in the length direction and is fixedly connected to the lower mold (3). There are two second side baffles (1), which are respectively disposed on the side of the lower mold (3) in the width direction and are fixedly connected to the lower mold (3).

4. A bending die for thin sheet metal according to claim 3, characterized in that, The top of the first side baffle (10) is higher than the top of the lower mold (3), and the top of the second side baffle (1) is higher than the top of the lower mold (3).

5. A bending die for thin sheet metal according to claim 1, characterized in that, The upper mold includes an upper mold one (6) and an upper mold two (7). The bottom of the upper mold one (6) is fixed with a U-shaped protrusion corresponding to the U-shaped end of the workpiece (11). The bottom of the upper mold two (7) is fixed with a V-shaped protrusion corresponding to the L-shaped end of the workpiece (11). The lower mold (3) is provided with a groove one that cooperates with the upper mold one (6), and the lower mold (3) is also provided with a groove two that cooperates with the upper mold two (7).

6. A bending die for thin sheet metal according to claim 5, characterized in that, The lower mold (3) is provided with a placement groove (15).

Images