Double-edgefold numerical control bending machine

Abstract

The utility model relates to the technical field of bending machines, in particular to a double-edgefold numerical control bending machine which comprises a lower die and a hydraulic connecting block which are connected with the bending machine, an upper die is arranged at the lower end of the hydraulic connecting block and located over the lower die, a first edgefold component and a second edgefold component are arranged in the lower die, and the first edgefold component and the second edgefold component are connected with the hydraulic connecting block. The first edge folding component and the second edge folding component are used for conducting double edge folding operation on one end of a plate, a sliding groove is formed in the upper end face of the lower die, and multiple sets of limiting grooves are formed in the lower die, located in the lower end of the sliding groove and communicated with the sliding groove. According to the utility model, the first edge folding part is matched with the downward pressing action of the upper die to realize the primary bending of the plate, and then, one end of the plate is subjected to secondary bending treatment through the collaborative operation of the second edge folding part, so that the problem of low bending efficiency caused by the traditional staged treatment of the edge of the plate is effectively solved, and the production efficiency is improved. And the overall processing efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bending machines, and particularly relates to a double-edge folding numerical control bending machine. Background Art

[0002] A numerical control bending machine uses the equipped dies (general or special dies) to bend metal sheets in a cold state into workpieces with various geometric cross-sectional shapes. It is a sheet metal forming machine designed for cold-rolled sheet metal processing and is widely used in the sheet metal bending processing of industries such as automobile, aircraft manufacturing, light industry, shipbuilding, container, elevator, and railway vehicle.

[0003] The existing bending machines face some challenges during the bending process of sheets. Due to technical limitations, it is usually necessary to fold or bend the edges of the sheet separately twice to complete the entire processing process, and this phased processing method reduces the overall bending efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a double-edge folding numerical control bending machine to solve the problem that the current phased processing method for the edges of sheets in the existing technology reduces the overall bending efficiency.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A double-edge folding numerical control bending machine includes a lower die and a hydraulic connection block connected to the bending machine. An upper die is arranged at the lower end of the hydraulic connection block, and the upper die is located directly above the lower die. A first edge folding component and a second edge folding component are arranged inside the lower die, and the first edge folding component and the second edge folding component are used for performing double-edge folding operations on one end of a sheet.

[0007] Preferably: A chute is provided on the upper end surface of the lower die, and a limiting groove is provided inside the lower die. Multiple groups of limiting grooves are provided, and the limiting grooves are located at the lower end of the chute and are communicated with it. A folding block is slidably connected inside the chute, and a limiting guide rod is fixedly connected to the lower end of the folding block. Multiple groups of limiting guide rods are provided, and the lower ends of the limiting guide rods penetrate into the limiting groove and are slidably connected with it.

[0008] Preferably: A first spring is sleeved on the side wall of the limiting guide rod, the lower end of the first spring is fixedly connected to the inner wall of the chute, and the upper end of the first spring is fixedly connected to the lower end of the folding block.

[0009] Preferably: The second edge folding component includes a folding cutter head and a rotating block. A rotating shaft is rotatably connected inside the lower die, the rotating shaft is located behind the chute, multiple groups of reserved grooves are provided on the inner wall of the chute, multiple groups of rotating blocks are fixedly connected to the side wall of the rotating shaft, and the rotating blocks are located inside the reserved grooves.

[0010] Preferably, a connecting rod is fixedly connected to the upper end of the front side of the rotating block, a hemming cutter head is fixedly connected between multiple groups of the connecting rods, a resisting block is fixedly connected to the front end of the rotating block, the resisting block is located at the lower end of the connecting rod, the upper end of the resisting block abuts against the lower end of the hemming block, a second spring is fixedly connected to the lower end of the resisting block, and the lower end of the second spring is fixedly connected to the inner wall of the sliding groove.

[0011] Preferably, a dovetail block and a positioning slider are fixedly connected to the lower end of the hydraulic connection block, the positioning slider is located on the left and right sides of the dovetail block, a positioning hole is formed in the left end face of the positioning slider, a dovetail groove and a positioning groove are formed in the upper end face of the upper die, the positioning groove is located on the left and right sides of the dovetail groove, the dovetail block is located inside the dovetail groove and is slidably connected thereto, the positioning slider is located inside the positioning groove and is slidably connected thereto, threaded holes are formed in the left and right end faces of the upper die, bolts are threadedly connected inside the threaded holes, and one end of the bolt close to the dovetail groove penetrates into the positioning hole.

[0012] Preferably, a hemming groove is formed in the rear end face of the upper die, and the hemming groove is matched with the hemming cutter head.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. By arranging a sliding hemming block inside the lower die and cooperating with the pressing action of the upper die, the present utility model realizes the preliminary bending of the plate. Subsequently, through the coordinated operation of the second hemming component, the secondary bending treatment is carried out on one end of the plate. This design effectively solves the problem of low bending efficiency caused by the traditional staged treatment of the plate edge and improves the overall processing efficiency.

[0015] 2. The present utility model uses bolts to firmly install the positioning slider in the positioning groove to realize the stable positioning of the upper die. In addition, the design introduces the sliding of the dovetail block in the dovetail groove, which effectively disperses the shearing force of the positioning slider and the upper die on the bolts. This structural design not only facilitates the rapid replacement of the upper die but also significantly improves the stability of the upper die during the working process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall front view structural schematic diagram of the present utility model;

[0017] Figure 2 is the exploded structural schematic diagram of the hydraulic connection block and the upper die of the present utility model;

[0018] Figure 3 is the right view plane structural schematic diagram of the lower die of the present utility model;

[0019] Figure 4This is the right - view sectional structure schematic diagram of the lower mold of the utility model;

[0020] Figure 5 This is the plane structure schematic diagram of the initial bending process of the sheet material of the utility model.

[0021] In the figure: 1. Lower mold; 11. Slide groove; 111. Limit groove; 12. Reserved groove; 13. First hemming component; 131. Hemming block; 132. Limit guide rod; 133. First spring; 14. Second hemming component; 141. Rotating shaft; 142. Rotating block; 143. Connecting rod; 144. Block; 145. Hemming cutter head; 15. Second spring; 2. Hydraulic connection block; 21. Dovetail block; 22. Positioning slider; 23. Positioning hole; 3. Upper mold; 31. Dovetail groove; 32. Positioning groove; 33. Threaded hole; 34. Bolt; 35. Hemming groove. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Referring to Figures 1 - 4 As shown, the present utility model provides a double - hemming numerical - control bending machine, including a lower mold 1 and a hydraulic connection block 2 connected to the bending machine. The lower end of the hydraulic connection block 2 is provided with an upper mold 3. The upper mold 3 is located directly above the lower mold 1. Inside the lower mold 1, a first hemming component 13 and a second hemming component 14 are provided. The first hemming component 13 and the second hemming component 14 are used for performing double - hemming operations on one end of the sheet material. By setting the first hemming component 13 and cooperating with the downward pressing action of the upper mold 3, the preliminary bending of the sheet material is realized. Subsequently, through the coordinated operation of the second hemming component 14, the secondary bending treatment of one end of the sheet material is carried out. This design effectively solves the problem of low bending efficiency caused by the traditional staged treatment of the sheet material edge and improves the overall processing efficiency.

[0024] In a further embodiment, referring to Figures 3 - 4, a chute 11 is provided on the upper end face of the lower mold 1, and a limiting groove 111 is provided inside the lower mold 1. There are multiple groups of limiting grooves 111. The limiting groove 111 is located at the lower end of the chute 11 and is communicated with it. A hemming block 131 is slidably connected inside the chute 11. A limiting guide rod 132 is fixedly connected to the lower end of the hemming block 131. There are multiple groups of limiting guide rods 132. The lower end of the limiting guide rod 132 penetrates into the limiting groove 111 and is slidably connected with it. A first spring 133 is sleeved on the side wall of the limiting guide rod 132. The lower end of the first spring 133 is fixedly connected to the inner wall of the chute 11, and the upper end of the first spring 133 is fixedly connected to the lower end of the hemming block 131.

[0025] In this embodiment, by pressing down the upper mold 3, the sheet is first placed between the upper mold 3 and the hemming block 131 and bent. After the sheet is bent, the upper mold 3 continues to press down, driving the hemming block 131 to move downward. At this time, the first spring 133 is compressed by force, and the limiting guide rod 132 moves toward the lower end of the limiting groove 111. When the hemming block 131 moves downward, it provides power for the second bending component to work.

[0026] In a further embodiment, refer to Figures 3 - 4 , the second hemming component 14 includes a hemming cutter head 145 and a rotating block 142. A rotating shaft 141 is rotatably connected inside the lower mold 1. The rotating shaft 141 is located behind the chute 11. A reserved groove 12 is provided on the inner wall of the chute 11. There are multiple groups of reserved grooves 12. A rotating block 142 is fixedly connected to the side wall of the rotating shaft 141. There are multiple groups of rotating blocks 142 and they are located inside the reserved groove 12. A connecting rod 143 is fixedly connected to the upper front end of the rotating block 142. A hemming cutter head 145 is fixedly connected between multiple groups of connecting rods 143. A resisting block 144 is fixedly connected to the front end of the rotating block 142. The resisting block 144 is located below the connecting rod 143. The upper end of the resisting block 144 abuts against the lower end of the hemming block 131. A second spring 15 is fixedly connected to the lower end of the resisting block 144. The lower end of the second spring 15 is fixedly connected to the inner wall of the chute 11.

[0027] In this embodiment, by the downward movement of the hemming block 131, since the hemming block 131 abuts against the resisting block 144, the resisting block 144 is driven to move. The movement of the resisting block 144 drives the rotating block 142 to rotate. The movement of the rotating block 142 drives the connecting rod 143 to move. The movement of the connecting block drives the hemming cutter head 145 to move. The moving hemming cutter head 145 will push one end of the sheet and push one end of the sheet into the bending groove, so that the hemming cutter head 145 cooperates with the inner wall of the bending groove to bend one end of the sheet, thus solving the problem of low bending efficiency caused by the traditional staged processing of the sheet edge and improving the overall processing efficiency.

[0028] In a further embodiment, refer to Figure 2, a dovetail block 21 and a positioning slider 22 are fixedly connected to the lower end of the hydraulic connection block 2. The positioning slider 22 is located on the left and right sides of the dovetail block 21. A positioning hole 23 is formed in the left end face of the positioning slider 22. A dovetail groove 31 and a positioning groove 32 are formed in the upper end face of the upper die 3. The positioning groove 32 is located on the left and right sides of the dovetail groove 31. The dovetail block 21 is located inside the dovetail groove 31 and is slidably connected thereto. The positioning slider 22 is located inside the positioning groove 32 and is slidably connected thereto. Threaded holes 33 are formed in the left and right end faces of the upper die 3. A bolt 34 is threadedly connected inside the threaded hole 33. One end of the bolt 34 close to the dovetail groove 31 penetrates into the positioning hole 23. A flanging groove 35 is formed in the rear end face of the upper die 3. The flanging groove 35 cooperates with the flanging cutter head 145.

[0029] In this embodiment, the positioning slider 22 is firmly installed in the positioning groove 32 through the bolt 34 to achieve the stable positioning of the upper die 3. In addition, the design introduces the sliding of the dovetail block 21 in the dovetail groove 31, which effectively disperses the shearing force of the positioning slider 22 and the upper die 3 on the bolt 34. This structural design not only facilitates the rapid replacement of the upper die 3 but also significantly improves the stability of the upper die 3 during the working process; by providing the flanging groove 35 to cooperate with the flanging cutter head 145, the effect of bending one end of the plate can be achieved.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-edge CNC bending machine, comprising a lower die (1) and a hydraulic connection block (2) connected to the bending machine, characterized in that: An upper mold (3) is arranged at the lower end of the hydraulic connection block (2), and the upper mold (3) is located directly above the lower mold (1). A first folding component (13) and a second folding component (14) are arranged inside the lower mold (1), and the first folding component (13) and the second folding component (14) are used to perform a double folding operation on one end of the plate; The upper end surface of the lower mold (1) is provided with a slide groove (11), and a limiting groove (111) is provided inside the lower mold (1). The limiting groove (111) is provided in multiple groups. The limiting groove (111) is located at the lower end of the slide groove (11) and is connected thereto. A folding block (131) is slidably connected inside the slide groove (11). The lower end of the folding block (131) is fixedly connected to a limiting guide rod (132). The limiting guide rod (132) is provided in multiple groups. The lower end of the limiting guide rod (132) passes through the inside of the limiting groove (111) and is slidably connected thereto.

2. A double-edge folding CNC bending machine according to claim 1, characterized in that: A first spring (133) is sleeved on the side wall of the limiting guide rod (132); the lower end of the first spring (133) is fixedly connected to the inner wall of the slide groove (11); and the upper end of the first spring (133) is fixedly connected to the lower end of the folding block (131).

3. The double-edge folding CNC bending machine according to claim 1, characterized in that: The second folding component (14) includes a folding tool head (145) and a rotating block (142); the lower mold (1) is rotatably connected to a rotating shaft (141); the rotating shaft (141) is located behind the slide groove (11); the inner wall of the slide groove (11) is provided with a reserved groove (12); the reserved groove (12) is provided with multiple groups; the side wall of the rotating shaft (141) is fixedly connected to a rotating block (142); the rotating block (142) is provided with multiple groups and is located inside the reserved groove (12).

4. A double-edge folding CNC bending machine according to claim 3, characterized in that: The upper front end of the rotating block (142) is fixedly connected to a connecting rod (143), and a folding cutter head (145) is fixedly connected between multiple groups of the connecting rods (143). The front end of the rotating block (142) is fixedly connected to a stop block (144), and the stop block (144) is located at the lower end of the connecting rod (143). The upper end of the stop block (144) and the lower end of the folding block (131) are in contact with each other. The lower end of the stop block (144) is fixedly connected to a second spring (15), and the lower end of the second spring (15) is fixedly connected to the inner wall of the slide groove (11).

5. The double-edge folding CNC bending machine according to claim 1, characterized in that: The lower end of the hydraulic connection block (2) is fixedly connected with a dovetail block (21) and a positioning slide block (22), the positioning slide block (22) is located on the left and right sides of the dovetail block (21), and a positioning hole (23) is provided on the left end face of the positioning slide block (22). The upper end face of the upper mold (3) is provided with a dovetail groove (31) and a positioning groove (32), the positioning groove (32) is located on the left and right sides of the dovetail groove (31), the dovetail block (21) is located inside the dovetail groove (31) and is slidably connected thereto, the positioning slide block (22) is located inside the positioning groove (32) and is slidably connected thereto, and threaded holes (33) are provided on the left and right end faces of the upper mold (3), and bolts (34) are threadedly connected inside the threaded holes (33), and one end of the bolt (34) close to the dovetail groove (31) penetrates into the positioning hole (23).

6. A double-edge folding CNC bending machine according to claim 5, characterized in that: The rear end surface of the upper mold (3) is provided with a folding groove (35), and the folding groove (35) cooperates with the folding cutter head (145).

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