Bending device for sheet metal machining

Abstract

The invention discloses a bending device for sheet metal machining, relates to the technical field of sheet metal machining, and solves the problems that if positioning is not accurate in the bending process, position deviation of a bending line can be caused, and product quality is affected. A bending device for sheet metal machining comprises a workbench, a supporting frame is fixedly arranged on one side of the upper end of the workbench, the top end of the inner side of the supporting frame is in driving connection with a fixing base through an air cylinder, an upper die is installed below the fixing base, and an infrared emitter is installed in the middle of the front side of the upper die and located at the top end of the inner side of the supporting frame. A base is installed below the upper die and located at the upper end of the workbench through a limiting mechanism, and a lower die matched with the upper die is fixedly arranged at the upper end of the base. The starting gear is meshed with the rack, so that the sliding frame is driven to move along the cavity, then the connecting base provided with the clamping plate above is driven to move, sheet metal parts are conveniently placed, and meanwhile an operator is facilitated to adjust and finally determine the position of a workpiece.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing technology, specifically to a bending device for sheet metal processing. Background Technology

[0002] With the continuous upgrading of industrial equipment, bending equipment plays an important role in sheet metal processing. When processing some electrical components, fixed base plates and other hardware products, bending equipment is needed to bend and fold them into the required geometric shape to facilitate subsequent installation and use.

[0003] The existing bending devices use bolts to fix the upper and lower dies to the equipment, which makes it inconvenient to replace different upper and lower dies according to the different structures or sizes of sheet metal parts that need to be bent. This results in limited use. In addition, some sheet metal parts are usually thin and large in area. If the positioning is not accurate during the bending process, it will lead to deviation of the bending line position and affect product quality. Therefore, it does not meet the existing needs. In response, we have proposed a bending device for sheet metal processing. Summary of the Invention

[0004] The purpose of this invention is to provide a bending device for sheet metal processing, which solves the problem mentioned in the background art that the upper and lower dies of the existing bending devices are fixed to the equipment with bolts, making it inconvenient to replace different upper and lower dies according to the different sheet metal parts that need to be bent, resulting in limited use. In addition, some sheet metal parts are usually thin and large in area, and if the positioning is not accurate during the bending process, it will lead to deviation of the bending line position, affecting product quality.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sheet metal bending device, comprising a worktable, a support frame fixedly provided on one side of the upper end of the worktable, a fixed seat connected to the top of the inner side of the support frame via a cylinder drive, an upper die installed below the fixed seat, an infrared emitter installed in the middle of the front side of the upper die and at the top of the inner side of the support frame, a base installed below the upper die and at the upper end of the worktable via a limiting mechanism, and a lower die matching the upper die fixedly provided at the upper end of the base; The workbench has an internal cavity. The upper end of the workbench, and the front and rear sides of the lower mold, are provided with guide grooves that are connected to the cavity. A sliding frame is slidably connected inside the cavity. The front and rear sides of the upper end of the sliding frame are fixedly connected with sliding through guide grooves and extend to support rods at the upper end of the workbench. The upper ends of the front and rear support rods on both sides are fixedly connected with connecting seats. The front and rear sides of the upper ends of the connecting seats on both sides are movably connected with clamping plates.

[0006] Preferably, symmetrical T-shaped grooves are provided on both sides of the bottom end of the fixing base. The ends of the T-shaped grooves on both sides that are close to each other and located at the front end of the fixing base are provided with symmetrical grooves. A crossbar is fixedly connected inside the grooves on both sides.

[0007] Preferably, the outer surfaces of both crossbars are slidably connected with sliding plates, and the sides of the two sliding plates that are close to each other are fixedly connected with the inner walls of the corresponding grooves with second springs. The second springs are wound around the outer surfaces of the crossbars, and the sides of the two sliding plates that are away from the second springs are fixedly connected with second limiting blocks. In the natural state of the second springs, the end of the second limiting block that is away from the sliding plate moves through the groove and extends into the interior of the T-shaped groove.

[0008] Preferably, both sides of the upper end of the upper mold are fixedly connected to T-shaped sliders that are slidably connected to the T-shaped groove. The ends of the T-shaped sliders on both sides that are close to each other are provided with second limiting grooves that match the second limiting block. The end of the second limiting block that extends through into the T-shaped groove is inserted into the corresponding second limiting groove.

[0009] Preferably, the limiting mechanism includes two limiting seats. Each of the two limiting seats has a driving cavity on the side away from each other, and a movable cavity on the side close to each other. The front end of each of the two limiting seats is provided with a semi-threaded rod that is threaded through and extends into the driving cavity, and a driving block is fixedly connected to the outer surface of each of the two semi-threaded rods near the middle.

[0010] Preferably, a movable rod is movably provided inside the movable cavity, and a limiting plate that is slidably connected to the end of the movable rod away from the driving cavity is fixedly connected to the end of the movable rod. A first spring is fixedly connected between one side of the limiting plate and one side of the inner wall of the movable cavity, and the first spring is wound around the outer surface of the movable rod.

[0011] Preferably, the end of the movable rod away from the limiting plate is arc-shaped and extends through the movable cavity and into the interior of the driving cavity. The driving block is conical, and the arc-shaped end of the movable rod slides in contact with the outer surface of the driving block.

[0012] Preferably, the end of the limiting plate away from the movable rod is fixedly connected to a first limiting block, and the end of the first limiting block away from the limiting plate movably passes through the movable cavity and extends to the outside of the limiting seat. The base is slidably inserted between the two limiting seats, and both sides of the outer surface of the base are provided with a first limiting groove that matches the first limiting block. The end of the first limiting block that extends through to the outside of the limiting seat is inserted into the corresponding first limiting groove.

[0013] Preferably, the sliding frame is arranged in an inverted U-shape, and a rack is fixedly connected to the top of the inner side of the sliding frame. A shaft is connected to the middle of the cavity and the inner side of the sliding frame via a motor drive. A gear is fixedly connected to the outer surface of the shaft, and the outer surface of the gear meshes with the rack.

[0014] Preferably, the upper ends of both connecting seats are provided with sliding grooves, and the interior of each sliding groove is rotatably connected to a bidirectional threaded rod via a rotating handle. The bottom ends of the two clamping plates at the upper end of the connecting seats are slidably connected to the interior of the sliding grooves and threadedly connected to both sides of the outer surface of the bidirectional threaded rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention uses a second limiting block to be inserted into the corresponding second limiting groove on the T-shaped slider under the elastic force of the second spring, thereby fixing the upper mold; and the first limiting block to be inserted into the corresponding first limiting groove on the outer surface of the base under the drive of the semi-threaded rod, thereby fixing the lower mold. This makes it convenient to replace different upper and lower molds according to the bending structure or size of different sheet metal parts. 2. This invention uses a motor to drive the shaft and gear to rotate. When the gear rotates, it meshes with the rack at the upper end, thereby driving the sliding frame to move along the cavity, which in turn drives the connecting seat with the clamping plate above to move. This facilitates the placement of sheet metal parts. In addition, the infrared emitter generates infrared rays, which can mark the position of the sheet metal parts, helping the operator to adjust and finally determine the position of the workpiece. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front sectional view of the entire invention; Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A; Figure 4 This is a top sectional view of the entire invention; Figure 5 For the present invention Figure 2 Schematic diagram of the structure at point B; Figure 6 For the present invention Figure 4 A schematic diagram of the structure at point C.

[0017] In the diagram: 1. Workbench; 101. Cavity; 102. Guide groove; 2. Support frame; 3. Cylinder; 4. Fixed seat; 401. T-slot; 402. Groove; 5. Upper mold; 6. Limiting mechanism; 601. Limiting seat; 60101. Drive cavity; 60102. Movable cavity; 602. Semi-threaded rod; 603. Drive block; 604. Movable rod; 605. Limiting plate; 606. First spring; 607. First limiting block 7. Base; 701. First limiting groove; 8. Lower mold; 9. Sliding frame; 10. Rack; 11. Gear; 12. Shaft; 13. Motor; 14. Support rod; 15. Connecting seat; 1501. Slide groove; 16. Clamping plate; 17. Bidirectional threaded rod; 18. Crossbar; 19. Sliding plate; 20. Second spring; 21. Second limiting block; 22. T-shaped slider; 2201. Second limiting groove; 23. Infrared emitter. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Please see Figures 1 to 6 An embodiment of the present invention provides a sheet metal bending device, including a workbench 1, a support frame 2 fixedly provided on one side of the upper end of the workbench 1, a fixed seat 4 driven to the top of the inner side of the support frame 2 by a cylinder 3, an upper die 5 installed below the fixed seat 4, an infrared emitter 23 installed in the middle of the front side of the upper die 5 and at the top of the inner side of the support frame 2, a base 7 installed below the upper die 5 and at the upper end of the workbench 1 by a limiting mechanism 6, and a lower die 8 matching the upper die 5 fixedly provided at the upper end of the base 7. The workbench 1 has a cavity 101 inside. The upper end of the workbench 1 and the front and rear sides of the lower mold 8 are provided with guide grooves 102 that are connected to the cavity 101. A sliding frame 9 is slidably connected inside the cavity 101. The front and rear sides of the upper end of the sliding frame 9 are fixedly connected with sliding through guide grooves 102 and extend to support rods 14 at the upper end of the workbench 1. The upper ends of the front and rear support rods 14 on both sides are fixedly connected with connecting seats 15. The front and rear sides of the upper ends of the connecting seats 15 on both sides are movably connected with clamping plates 16.

[0020] Symmetrical T-slots 401 are provided on both sides of the bottom end of the fixed base 4. Symmetrical grooves 402 are provided at the ends of the T-slots 401 that are close to each other and located at the front end of the fixed base 4. A crossbar 18 is fixedly connected inside each groove 402. Sliding plates 19 are slidably connected to the outer surfaces of the crossbars 18. A second spring 20 is fixedly connected between the sides of the two sliding plates 19 that are close to each other and the inner wall of the corresponding groove 402. The second spring 20 is wound around the outer surface of the crossbar 18. The two sliding plates 19 are further away from the second spring 20. Each side is fixedly connected with a second limiting block 21. In the natural state of the second spring 20, the end of the second limiting block 21 away from the sliding plate 19 moves through the groove 402 and extends into the interior of the T-groove 401. Both sides of the upper end of the upper mold 5 are fixedly connected with T-shaped sliders 22 that are slidably connected to the T-groove 401. The ends of the two T-shaped sliders 22 that are close to each other are provided with second limiting grooves 2201 that match the second limiting block 21. The end of the second limiting block 21 that extends through into the interior of the T-groove 401 is inserted into the corresponding second limiting groove 2201.

[0021] By pinching the two sliding plates 19 at the front end of the fixed base 4, both sliding plates 19 move along the crossbar 18 towards each other, compressing the second spring 20, which in turn moves the second limiting block 21 into the groove 402. Then, the T-shaped slider 22 at the upper end of the suitable upper mold 5 is slidably inserted into the T-shaped groove 401. Then, the pinching of the two sliding plates 19 is released. At this time, the two second limiting blocks 21 are inserted into the corresponding second limiting grooves 2201 on the T-shaped slider 22 under the elastic force of the second spring 20, thereby fixing the upper mold 5.

[0022] The limiting mechanism 6 includes two limiting seats 601. Each limiting seat 601 has a driving cavity 60101 on its side furthest from each other, and a movable cavity 60102 on its side closest to each other. Each limiting seat 601 has a semi-threaded rod 602 threaded through and extending into the driving cavity 60101 at its front end. A driving block 603 is fixedly connected to the outer surface of each semi-threaded rod 602 near the middle. A movable rod 604 is movably mounted inside the movable cavity 60102. A limiting plate 605, slidably connected to the movable cavity 60102, is fixedly connected to the end of the movable rod 604 furthest from the driving cavity 60101. A first spring 606 is fixedly connected between one side of the limiting plate 605 and one side of the inner wall of the movable cavity 60102, and the first spring 606 is wound around the movable rod 604. The outer surface of the movable rod 604 has an arc-shaped end away from the limiting plate 605, which moves through the movable cavity 60102 and extends into the drive cavity 60101. The drive block 603 is conical, and the arc end of the movable rod 604 slides in contact with the outer surface of the drive block 603. The end of the limiting plate 605 away from the movable rod 604 is fixedly connected to the first limiting block 607, and the end of the first limiting block 607 away from the limiting plate 605 moves through the movable cavity 60102 and extends to the outside of the limiting seat 601. The base 7 is slidably inserted between the two limiting seats 601, and the two sides of the outer surface of the base 7 are provided with first limiting grooves 701 that match the first limiting block 607. The end of the first limiting block 607 that extends through to the outside of the limiting seat 601 is inserted into the corresponding first limiting groove 701.

[0023] By sliding the base 7 at the bottom of the lower mold 8 between the two limiting seats 601, and then rotating the semi-threaded rods 602 on the front side of the two limiting seats 601, the two semi-threaded rods 602 are moved threaded towards the top of the drive cavity 60101. At this time, the movable rod 604 on one side slides into contact with the tapered surface of the drive block 603 on the outer surface of the semi-threaded rod 602, thereby pushing the limiting plate 605 to move the first limiting block 607 towards the outside of the limiting seat 601 and inserting it into the corresponding first limiting groove 701 on the outer surface of the base 7, thereby fixing the lower mold 8.

[0024] The sliding frame 9 is arranged in an inverted U-shape, and a rack 10 is fixedly connected to the top of the inner side of the sliding frame 9. In the middle of the cavity 101, and located inside the sliding frame 9, a shaft 12 is connected by a motor 13. A gear 11 is fixedly connected to the outer surface of the shaft 12, and the outer surface of the gear 11 meshes with the rack 10. When the motor 13 is started, the shaft 12 and the gear 11 are driven to rotate. When the gear 11 rotates, it meshes with the rack 10 at the upper end, thereby driving the sliding frame 9 to move along the cavity 101, and driving the connecting seat 15 with the clamping plate 16 above to move.

[0025] Both connecting seats 15 have a sliding groove 1501 at their upper ends. The interior of each sliding groove 1501 is rotatably connected to a bidirectional threaded rod 17 via a rotating handle. The bottom ends of the two clamping plates 16 at the upper end of the connecting seat 15 are slidably connected to the interior of the sliding groove 1501 and threadedly connected to both sides of the outer surface of the bidirectional threaded rod 17. By rotating the rotating handle, the bidirectional threaded rod 17 is driven to rotate. When the bidirectional threaded rod 17 rotates, the threads drive the clamping plates 16 on both sides of the outer surface to move closer to each other under the limitation of the sliding groove 1501, thereby clamping and fixing the sheet metal part.

[0026] When using the sheet metal bending device, by pinching the two sliding plates 19 at the front end of the fixed base 4, both sliding plates 19 move along the crossbar 18 towards each other, compressing the second spring 20, which in turn moves the second limiting block 21 into the groove 402. Then, the T-shaped slider 22 at the upper end of the appropriate upper die 5 is slidably inserted into the T-shaped groove 401. Next, the pinching of the two sliding plates 19 is released. At this time, under the elastic force of the second spring 20, the two second limiting blocks 21 are inserted into the corresponding second limiting grooves 2201 on the T-shaped slider 22, thereby bending the upper die 5. Mold 5 is installed and fixed; then the base 7 at the bottom of the lower mold 8 is slidably inserted between the two limiting seats 601. Then, by rotating the semi-threaded rods 602 on the front side of the two limiting seats 601, the two semi-threaded rods 602 are threaded towards the top of the drive cavity 60101. At this time, the movable rod 604 on one side slides into contact with the tapered surface of the drive block 603 on the outer surface of the semi-threaded rod 602, thereby pushing the limiting plate 605 to drive the first limiting block 607 to move outward of the limiting seat 601 and insert into the corresponding first limiting groove 701 on the outer surface of the base 7, thereby fixing the lower mold 8. After the upper mold 5 and lower mold 8 are installed, the motor 13 drives the shaft 12 and gear 11 to rotate. When the gear 11 rotates, it meshes with the rack 10 at the upper end, thereby driving the sliding frame 9 to move along the cavity 101 towards the end away from the support frame 2. This, in turn, drives the connecting seat 15 with clamping plate 16 above to move away from the support frame 2. Then, the sheet metal part can be easily placed on top of the two connecting seats 15 and between the front and rear clamping plates 16. Then, by rotating the handle, the bidirectional threaded rod 17 is driven to rotate. When the bidirectional threaded rod 17 rotates, The threaded drive brings the clamping plates 16 on both sides of the outer surface closer together under the limit of the slide groove 1501, thereby clamping and fixing the sheet metal part. Then, the motor 13 is started, causing the gear 11 to mesh with the rack 10, which drives the connecting seat 15, on which the sheet metal part is placed, to move downwards to the support frame 2 to a suitable position. At the same time, the infrared emitter 23 is turned on. The infrared emitter 23 generates infrared rays, which eventually fall on the surface of the sheet metal part, thereby marking the position of the sheet metal part and helping the operator to adjust and finally determine the position of the workpiece.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A bending device for sheet metal processing, comprising a worktable (1), characterized in that: A support frame (2) is fixedly provided on one side of the upper end of the workbench (1). The top of the inner side of the support frame (2) is connected to a fixed seat (4) by a cylinder (3). An upper mold (5) is installed below the fixed seat (4). An infrared emitter (23) is installed in the middle of the front side of the upper mold (5) and at the top of the inner side of the support frame (2). A base (7) is installed below the upper mold (5) and at the upper end of the workbench (1) by a limiting mechanism (6). A lower mold (8) matching the upper mold (5) is fixedly provided at the upper end of the base (7). The workbench (1) has a cavity (101) inside. The upper end of the workbench (1) and the front and rear sides of the lower mold (8) are provided with guide grooves (102) that are connected to the cavity (101). A sliding frame (9) is slidably connected inside the cavity (101). The front and rear sides of the upper end of the sliding frame (9) are fixedly connected with sliding through guide grooves (102) and extend to support rods (14) at the upper end of the workbench (1). A connecting seat (15) is fixedly connected between the upper ends of the front and rear sides of the support rods (14) on both sides. A clamping plate (16) is movably connected to the front and rear sides of the upper end of the connecting seat (15) on both sides.

2. The bending device for sheet metal processing according to claim 1, characterized in that: The bottom of the fixed base (4) has symmetrical T-shaped grooves (401) on both sides. The two ends of the T-shaped grooves (401) that are close to each other and located at the front end of the fixed base (4) have symmetrical grooves (402). The inside of the grooves (402) on both sides is fixedly connected with a crossbar (18).

3. The bending device for sheet metal processing according to claim 2, characterized in that: Sliding plates (19) are slidably connected to the outer surfaces of the two crossbars (18). A second spring (20) is fixedly connected between the side of the two sliding plates (19) that is close to each other and the inner wall of the corresponding groove (402). The second spring (20) is wrapped around the outer surface of the crossbar (18). A second limiting block (21) is fixedly connected to the side of the two sliding plates (19) that is away from the second spring (20). In the natural state of the second spring (20), the end of the second limiting block (21) that is away from the sliding plate (19) moves through the groove (402) and extends into the interior of the T-shaped groove (401).

4. A bending device for sheet metal processing according to claim 3, characterized in that: Both sides of the upper end of the upper mold (5) are fixedly connected to T-shaped sliders (22) that are slidably connected to the T-shaped groove (401). The ends of the T-shaped sliders (22) on both sides that are close to each other are provided with second limiting grooves (2201) that match the second limiting block (21). The end of the second limiting block (21) that extends through into the T-shaped groove (401) is inserted into the corresponding second limiting groove (2201).

5. A bending device for sheet metal processing according to claim 1, characterized in that: The limiting mechanism (6) includes two limiting seats (601). The two limiting seats (601) are provided with a driving cavity (60101) on the side away from each other. The two driving cavities (60101) are provided with a movable cavity (60102) on the side close to each other. The front end of the two limiting seats (601) is provided with a semi-threaded rod (602) that is threaded through and extends into the driving cavity (60101). The outer surface of the two semi-threaded rods (602) near the middle is fixedly connected with a driving block (603).

6. A bending device for sheet metal processing according to claim 5, characterized in that: The movable cavity (60102) is equipped with a movable rod (604), and a limiting plate (605) that is slidably connected to the movable rod (60102) is fixedly connected to one end of the movable rod (604) away from the driving cavity (60101). A first spring (606) is fixedly connected between one side of the limiting plate (605) and one side of the inner wall of the movable cavity (60102), and the first spring (606) is wrapped around the outer surface of the movable rod (604).

7. A bending device for sheet metal processing according to claim 6, characterized in that: The end of the movable rod (604) away from the limiting plate (605) is arc-shaped and moves through the movable cavity (60102) and extends into the interior of the driving cavity (60101). The driving block (603) is conical and the arc end of the movable rod (604) slides in contact with the outer surface of the driving block (603).

8. A bending device for sheet metal processing according to claim 7, characterized in that: The end of the limiting plate (605) away from the movable rod (604) is fixedly connected to the first limiting block (607), and the end of the first limiting block (607) away from the limiting plate (605) moves through the movable cavity (60102) and extends to the outside of the limiting seat (601). The base (7) is slidably inserted between the two limiting seats (601), and the two sides of the outer surface of the base (7) are provided with the first limiting groove (701) matching the first limiting block (607). The end of the first limiting block (607) extending through to the outside of the limiting seat (601) is inserted into the corresponding first limiting groove (701).

9. A bending device for sheet metal processing according to claim 1, characterized in that: The sliding frame (9) is arranged in an inverted U-shape, and a rack (10) is fixedly connected to the top of the inner side of the sliding frame (9). A shaft (12) is connected to the middle of the cavity (101) and the inner side of the sliding frame (9) via a motor (13). A gear (11) is fixedly connected to the outer surface of the shaft (12), and the outer surface of the gear (11) meshes with the rack (10).

10. A bending device for sheet metal processing according to claim 1, characterized in that: Both of the connecting seats (15) have a sliding groove (1501) at their upper ends. Both of the sliding grooves (1501) are connected to a bidirectional threaded rod (17) through a rotating handle. The bottom ends of the two clamps (16) at the upper end of the connecting seat (15) are slidably connected to the inside of the sliding groove (1501) and threadedly connected to both sides of the outer surface of the bidirectional threaded rod (17).

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