A die positioning structure for a sheet metal bending machine

Abstract

This utility model discloses a module positioning structure for a sheet metal bending machine, including a worktable. A portal frame is provided at the upper end of the worktable, and a hydraulic cylinder is fixedly installed on the upper right side of the portal frame. The lower end of the hydraulic cylinder piston rod vertically penetrates the portal frame. This utility model improves the structural stability of the upper dies by fixing several irregularly shaped positioning blocks to the left and right ends of several convex punches, inserting several upper dies between pairs of opposing irregularly shaped positioning blocks, and using a first bolt to position and fix the upper dies on the convex punches. A rectangular insert on a rectangular support base is inserted into a rectangular slot on a fixed base and fixed with a second bolt. The lower die is then aligned with the rectangular support base, allowing a strip-shaped protrusion to be inserted into the strip-shaped slot, and several cylindrical protrusions to be inserted into several cylindrical slots. This allows for quick and easy positioning and replacement of the lower die, facilitating the bending of different sheet metal parts.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal bending machine technology, and in particular to a module positioning structure for sheet metal bending machine. Background Technology

[0002] Sheet metal bending machines are mechanical devices used to process metal sheets into the required shapes through pressure and molds. They are suitable for simple structures and mass production scenarios, and are widely used in industries that require metal sheet forming, such as automobile bodies and light industrial products. They are especially suitable for mass production of standardized or small-batch customized sheet metal parts.

[0003] In practical use, the module structure of existing sheet metal bending machines has an upper die head that is only fixed to the punch with bolts, resulting in poor structural stability. Furthermore, the lower die head is inconvenient to replace, which cannot meet the bending processing requirements of different sheet metal parts. To address these issues, a module positioning structure for sheet metal bending machines is proposed. Utility Model Content

[0004] To address the shortcomings and defects in the existing technology, this utility model proposes a module positioning structure for a sheet metal bending machine. This structure solves the problem that in the actual use of the existing sheet metal bending machine module structure, the upper die head is only fixed to the punch with bolts, resulting in poor structural stability, and the lower die head is inconvenient to replace, thus failing to meet the technical requirements for bending different sheet metal parts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A module positioning structure for a sheet metal bending machine includes a worktable. A portal frame is provided at the upper end of the worktable. A hydraulic cylinder is fixedly installed at the upper right side of the portal frame. The lower end of the piston rod of the hydraulic cylinder vertically penetrates the portal frame. A connecting seat is fixedly connected to the lower end of the piston rod. A fixed seat is fixedly connected to the upper end of the worktable opposite to the connecting seat. A plurality of convex punches are fixedly connected to the lower end of the connecting seat. Each of the convex punches is provided with an upper die head. A plurality of rectangular load-bearing seats are fixedly connected to the upper end of the fixed seat. A lower die head is snapped and fixed to the upper end of each of the rectangular load-bearing seats.

[0006] Preferably, several irregularly shaped positioning blocks are fixedly connected to both ends of several convex punches, arranged in pairs opposite each other. Several rectangular protrusions are provided at the lower end of the center position of the convex punch. Several rectangular protrusions are respectively positioned between the pairs of irregularly shaped positioning blocks. Several upper dies are respectively inserted between the pairs of irregularly shaped positioning blocks. Several upper dies are provided with rectangular slots at their upper ends. Several rectangular protrusions are respectively inserted into several rectangular slots. Two first bolts are threaded through several irregularly shaped positioning blocks on the right side. Two first circular holes are provided on the inner walls of both sides of several rectangular slots. Two second circular holes are provided on several rectangular protrusions. The two first circular holes on the same side are respectively positioned opposite the two second circular holes. The two first bolts are respectively inserted through the two second circular holes and the first circular holes on the same side.

[0007] Preferably, the rectangular protrusions and the convex punch are integrally cast, and the diameters of the first circular hole and the second circular hole are equal.

[0008] Preferably, the upper end of the fixing base is provided with a plurality of rectangular slots, the lower end of each of the plurality of rectangular load-bearing bases is provided with a rectangular insert, the lower ends of the plurality of rectangular inserts are respectively inserted into the plurality of rectangular slots, the right side wall of the fixing base facing the plurality of rectangular slots is provided with a plurality of grooves, the inner wall of each of the plurality of grooves facing the rectangular slots is provided with a second bolt, the plurality of rectangular inserts are provided with threaded holes that are connected from left to right, and the plurality of second bolts are respectively threaded through the plurality of threaded holes.

[0009] Preferably, each of the rectangular support seats has a strip-shaped protrusion at its upper center, each of the lower mold heads has a strip-shaped slot at its lower end, and the strip-shaped protrusions are respectively inserted into the strip-shaped slots. Each of the lower mold heads has a columnar protrusion near its four corners at its lower end, and each of the rectangular support seats has a columnar groove near its four corners at its lower end, and the columnar protrusions are respectively inserted into the columnar grooves.

[0010] Preferably, the rectangular insert and the strip protrusion are integrally cast with the rectangular support base, and the columnar protrusion is integrally cast with the lower mold head.

[0011] Compared with the prior art, the advantages of this utility model are as follows: 1. By fixing several irregularly shaped positioning blocks to the left and right ends of several convex punches, inserting several upper dies between pairs of opposite irregularly shaped positioning blocks, and using the first bolt to position and fix the upper dies on the convex punches, the structural stability of the upper dies is improved.

[0012] 2. By inserting the rectangular blocks on the rectangular support into the rectangular slots on the fixed base and fixing them with the second bolt, the lower die head is connected to the rectangular support, so that the strip protrusion is inserted into the strip slot and several column protrusions are respectively inserted into several column slots. The lower die head is quickly snapped and positioned and is easy to replace, which facilitates the bending processing of different sheet metal parts. Attached Figure Description

[0013] Figure 1 This is a perspective view of a module positioning structure for a sheet metal bending machine proposed in this utility model. Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This utility model provides a schematic diagram of the convex punch, upper die, and irregular positioning block for a module positioning structure of a sheet metal bending machine. Figure 4 for Figure 1 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram showing the disassembled structure of the rectangular support base and the lower die head of the module positioning structure for a sheet metal bending machine proposed in this utility model.

[0014] In the diagram: 1. Workbench, 2. Gantry bracket, 3. Hydraulic cylinder, 4. Connecting seat, 5. Fixed seat, 6. Convex punch, 7. Upper die head, 8. Rectangular load-bearing seat, 9. Lower die head, 10. Irregular positioning block, 11. Rectangular protrusion, 12. Rectangular slot, 13. First bolt, 14. First circular hole, 15. Second circular hole, 16. Rectangular slot, 17. Rectangular insert, 18. Groove, 19. Second bolt, 20. Threaded hole, 21. Strip protrusion, 22. Strip slot, 23. Column protrusion, 24. Column slot. Detailed Implementation

[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "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.

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-5A module positioning structure for a sheet metal bending machine includes a worktable 1. A portal frame 2 is mounted on the upper end of the worktable 1. A hydraulic cylinder 3 is fixedly mounted on the upper right side of the portal frame 2. The lower end of the piston rod of the hydraulic cylinder 3 vertically penetrates the portal frame 2. A connecting seat 4 is fixedly connected to the lower end of the piston rod of the hydraulic cylinder 3. The hydraulic cylinder 3, in conjunction with the connecting seat 4 and a convex punch 6, drives an upper die head 7 to move vertically up and down. A fixed seat 5 is fixedly connected to the upper end of the worktable 1 opposite to the connecting seat 4. Several convex punches 6 are fixedly connected to the lower end of the connecting seat 4. Each of the convex punches 6 is equipped with an upper die head 7. Several irregularly shaped positioning blocks 10 are fixedly connected to both ends of the punch, and several rectangular protrusions 11 are provided at the lower end of the center of the punch 6. The rectangular protrusions 11 are respectively positioned between the several irregularly shaped positioning blocks 10. Several upper die heads 7 are respectively inserted between the several irregularly shaped positioning blocks 10. The several irregularly shaped positioning blocks 10 and the punch 6 form a groove (not shown in the figure). The upper die head 7 is inserted into the groove and positioned with the first bolt 13, which can improve the structural stability of the upper die head 7 and prevent the upper die head 7 from shifting during stamping and bending.

[0018] Each of the upper die heads 7 has a rectangular slot 12 at its upper end, and a number of rectangular protrusions 11 are respectively inserted into the rectangular slots 12. Two first bolts 13 are threaded through each of the irregular positioning blocks 10 on the right side. Two first circular holes 14 are provided on the inner walls of the rectangular slots 12 on both sides, and two second circular holes 15 are provided on the rectangular protrusions 11. The two first circular holes 14 on the same side are respectively positioned opposite the two second circular holes 15. The two first bolts 13 are respectively inserted through the two second circular holes 15 and the first circular holes 14 on the same side. By inserting the two first bolts 13 through the first circular holes 14 on the upper die head 7 and the second circular holes 15 on the rectangular protrusions 11, the upper die head 7 is effectively positioned and fixed on the convex punch 6. The rectangular protrusions 11 and the convex punch 6 are integrally cast. The diameters of the first circular holes 14 and the second circular holes 15 are equal.

[0019] A number of rectangular support seats 8 are fixedly connected to the upper end of the fixed base 5. A number of rectangular slots 16 are provided at the upper end of the fixed base 5. A rectangular insert 17 is provided at the lower end of each of the rectangular support seats 8. The lower ends of the rectangular inserts 17 are respectively inserted into the rectangular slots 16. A number of grooves 18 are provided on the right side wall of the fixed base 5 facing the rectangular slots 16. A second bolt 19 is provided through the inner wall of each of the grooves 18 facing the rectangular slots 16. A number of threaded holes 20 are provided on each of the rectangular inserts 17. The second bolts 19 are respectively threaded through the threaded holes 20. The rectangular inserts 17 on the rectangular support seats 8 are inserted into the rectangular slots 16 on the fixed base 5. The second bolts 19 in the grooves 18 are screwed and threaded into the threaded holes 20 on the rectangular inserts 17, which effectively positions the rectangular support seats 8 at the upper end of the fixed base 5 and prevents the rectangular support seats 8 from shifting during the stamping process.

[0020] Each of the rectangular support seats 8 has a lower mold head 9 fixedly attached to its upper end. Each of the rectangular support seats 8 has a strip-shaped protrusion 21 at its center at its upper end. Each of the lower mold heads 9 has a strip-shaped slot 22 at its lower end, with the protrusions 21 inserted into the slots. Each of the lower mold heads 9 has a cylindrical protrusion 23 near its four corners at its lower end. Each of the rectangular support seats 8 has a cylindrical slot 24 near its four corners at its lower end, with the protrusions 23 inserted into the slots. Within the slot 24, the lower die head 9 is aligned with the rectangular support base 8, allowing the strip protrusion 21 to be inserted into the strip slot 22. Several columnar protrusions 23 on the lower die head 9 are respectively inserted into several columnar slots 24 on the rectangular support base 8, enabling quick engagement and positioning of the lower die head 9 and facilitating easy replacement. This also facilitates bending processing of different sheet metal parts. The rectangular insert 17 and the strip protrusion 21 are integrally cast with the rectangular support base 8, and the columnar protrusion 23 is integrally cast with the lower die head 9.

[0021] In use, this utility model involves fixing several irregularly shaped positioning blocks 10 to the left and right ends of several convex punches 6, and inserting several upper die heads 7 between pairs of opposing irregularly shaped positioning blocks 10. This allows the rectangular protrusions 11 on the convex punches 6 to be inserted into the rectangular slots 12 on the upper die heads 7. A first bolt 13 passes through the first circular hole 14 on the upper die head 7 and the second circular hole 15 on the rectangular protrusion 11, effectively positioning and fixing the upper die head 7 onto the convex punches 6, improving the structural stability of the upper die head 7, and placing the rectangular support seat 8... The rectangular insert 17 is inserted into the rectangular slot 16 on the fixed base 5. The second bolt 19 in the groove 18 is screwed and threaded into the threaded hole 20 on the rectangular insert 17, effectively positioning the rectangular support base 8 at the upper end of the fixed base 5. The lower die head 9 is connected to the rectangular support base 8, so that the strip protrusion 21 is inserted into the strip slot 22. Several columnar protrusions 23 on the lower die head 9 are respectively inserted into several columnar slots 24 on the rectangular support base 8, which quickly snaps and positions the lower die head 9 and makes it easy to replace, facilitating the bending processing of different sheet metal parts.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A module positioning structure for a sheet metal bending machine, comprising a worktable (1), wherein the upper end of the worktable (1) is provided with a portal frame (2), characterized in that, A hydraulic cylinder (3) is fixedly installed on the upper right side of the portal frame (2). The lower end of the piston rod of the hydraulic cylinder (3) is vertically inserted through the portal frame (2). A connecting seat (4) is fixedly connected to the lower end of the piston rod of the hydraulic cylinder (3). A fixed seat (5) is fixedly connected to the upper end of the worktable (1) opposite to the connecting seat (4). Several convex punches (6) are fixedly connected to the lower end of the connecting seat (4). Each of the convex punches (6) is provided with an upper die head (7). Several rectangular load-bearing seats (8) are fixedly connected to the upper end of the fixed seat (5). A lower die head (9) is snapped and fixed to the upper end of each of the rectangular load-bearing seats (8).

2. The module positioning structure for a sheet metal bending machine according to claim 1, characterized in that, Several convex punches (6) are fixedly connected to their left and right ends with several irregularly shaped positioning blocks (10) arranged in pairs opposite each other. Several rectangular protrusions (11) are provided at the lower end of the center position of the convex punches (6). Several rectangular protrusions (11) are respectively positioned between the pairs of irregularly shaped positioning blocks (10). Several upper die heads (7) are respectively inserted between the pairs of irregularly shaped positioning blocks (10). Several upper die heads (7) are provided with rectangular slots (12) at their upper ends. Several rectangular protrusions (11) are respectively inserted into the slots. Inside the rectangular slot (12), two first bolts (13) are threaded through each of the irregular positioning blocks (10) on the right side. Two first circular holes (14) are provided on the inner walls of the left and right sides of the rectangular slot (12). Two second circular holes (15) are provided on the rectangular protrusions (11). The two first circular holes (14) on the same side are respectively positioned opposite the two second circular holes (15). The two first bolts (13) are respectively positioned through the two second circular holes (15) and the first circular holes (14) on the same side.

3. The module positioning structure for a sheet metal bending machine according to claim 2, characterized in that, The rectangular protrusions (11) and the convex punch (6) are integrally cast together, and the diameters of the first circular hole (14) and the second circular hole (15) are equal.

4. The module positioning structure for a sheet metal bending machine according to claim 1, characterized in that, The upper end of the fixed base (5) is provided with several rectangular slots (16), and the lower end of several rectangular load-bearing bases (8) is provided with rectangular inserts (17). The lower ends of several rectangular inserts (17) are respectively inserted into several rectangular slots (16). Several grooves (18) are provided on the right side wall of the fixed base (5) facing several rectangular slots (16). Second bolts (19) are provided through several grooves (18) facing the inner wall of the rectangular slots (16). Several rectangular inserts (17) are provided with threaded holes (20) that are connected from left to right. Several second bolts (19) are respectively threaded through several threaded holes (20).

5. A module positioning structure for a sheet metal bending machine according to claim 4, characterized in that, Each of the rectangular support bases (8) has a strip-shaped protrusion (21) at the upper end of its center position, and each of the lower mold heads (9) has a strip-shaped slot (22) at the lower end. The strip-shaped protrusions (21) are respectively inserted into the strip-shaped slots (22). Each of the lower mold heads (9) has a column-shaped protrusion (23) at the lower end near the four corners. Each of the rectangular support bases (8) has a column-shaped groove (24) at the lower end near the four corners. The column-shaped protrusions (23) are respectively inserted into the column-shaped grooves (24).

6. A module positioning structure for a sheet metal bending machine according to claim 5, characterized in that, The rectangular insert (17) and the strip protrusion (21) are integrally cast with the rectangular support (8), and the column protrusion (23) is integrally cast with the lower mold head (9).

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