Numerical control bending device for sheet metal parts

Abstract

The utility model discloses a numerical control bending device for sheet metal parts, and relates to the technical field of numerical control bending. A control panel is fixedly connected to one side of the device body, an operation platform is fixedly connected to the front end of the device body, an upper die is arranged at the front end of the device body, a plurality of adsorption holes in a linear array are formed in the surface of the upper die, the adsorption holes communicate with an external air pump through pipelines, and the adsorption holes are used for adsorbing sheet metal parts to the outside of the upper die. The adsorption holes in the surface of the upper die are connected with the air pump, in the bending process, the upper die presses a sheet metal part downwards and bends and forms the sheet metal part, at the moment, the adsorption holes are gradually attached to the sheet metal part, the air pump works, the sheet metal part is attached to the surface of the upper die, the bent sheet metal part ascends along with the upper die, a worker is replaced to lift the sheet metal part with the hands, and the labor intensity of the worker is lowered. And meanwhile, it can be ensured that the descending distance of the upper die is in place, and a better use prospect can be brought.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control bending, in particular to a numerical control bending device for sheet metal parts. Background Art

[0002] The bending machine uses the equipped mold to bend the cold metal sheets into workpieces of various geometric cross-sectional shapes. The bending machine generally adopts a special CNC system for the bending machine. The coordinate axis of the bending machine has developed from a single axis to twelve axes. The CNC system can automatically realize the slider running depth control, slider left and right tilt adjustment, rear stopper front and back adjustment, left and right adjustment, pressure tonnage adjustment and slider approach working speed adjustment, etc.

[0003] The current bending machines have a complex structure, and their rear stop and front support devices are mostly semi-automatic and semi-manually adjusted. During the bending process, they cannot detect product parameters such as plate thickness, bending angle, bending straightness measurement in real time online, and cannot provide real-time test signals and feedback compensation for the multi-point pressure of the workbench extension.

[0004] Chinese patent document CN107159747B discloses a multi-axis CNC bending machine, which adopts the following technical solution: including a control system, left and right vertical plates parallel to each other, a workbench provided between the left and right vertical plates and respectively connected to the left and right vertical plates, an upper slider component provided above the workbench, hydraulic cylinders located at the left and right ends of the upper slider component and driving its lifting movement, a gap adjustment device provided on the rear side of the upper slider component, and a front supporting device and a rear stopper provided at the front and rear of the workbench respectively, the hydraulic cylinder, the gap adjustment device, the front supporting device and the rear stopper are respectively connected to the control system; however, the following defects still exist during implementation:

[0005] Although the device in the above-mentioned document can detect product parameters in the processing process online in real time, effectively reduce deflection, extend equipment service life, reduce work intensity, improve processing efficiency, and achieve precise bending, the device in the above-mentioned document cannot realize automatic unloading of sheet metal parts, and requires staff to manually take out the sheet metal parts. During the bending process of the sheet metal parts, the staff need to manually place the sheet metal parts in the device. The sheet metal parts will warp during bending, and the hands need to support the sheet metal parts to maintain the stability of the sheet metal parts. The staff frequently loads and unloads materials, which causes fatigue in their hands. At the same time, the bending of the sheet metal parts is not consistent, thereby reducing the work efficiency of sheet metal bending. Utility Model Content

[0006] The purpose of the utility model is to provide a CNC bending device for sheet metal parts, so as to solve the problem in the above background technology that sheet metal parts warp during the bending process and need to be manually lifted.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] The CNC bending device for sheet metal parts includes a device body; a control panel is fixedly connected to one side of the device body, an operating platform is fixedly connected to the front end of the device body, an upper mold is provided at the front end of the device body, and a plurality of adsorption holes in a linear array are provided on the surface of the upper mold. The adsorption holes are connected to an external air pump through a pipeline, and the adsorption holes are used to adsorb the sheet metal parts on the outside of the upper mold.

[0009] The above-mentioned technical solution is adopted, in which the adsorption holes on the surface of the upper mold are connected to the air pump. During the bending process, the upper mold presses the sheet metal down and bends it into shape. At this time, the adsorption holes and the sheet metal are gradually fitted together, allowing the air pump to work and make the sheet metal fit on the surface of the upper mold. After bending, the sheet metal rises with the upper mold, replacing the staff's use of hands to lift the sheet metal, saving the staff's physical strength, and at the same time ensuring that the upper mold descends to the right distance.

[0010] A further improvement of the technical solution of the present utility model is that: a limiting baffle is arranged inside the main body of the device, a supporting baffle is slidably connected to the inner wall of the limiting baffle, the top of the supporting baffle is rotatably connected to the inclined slide via a torsion spring, and a plurality of fixed bases distributed in a linear array are fixedly connected to one side of the upper mold close to the supporting baffle, and the fixed base and the inclined slide are slidably connected.

[0011] The above technical solution is adopted. In this solution, the sheet metal part rises with the upper mold after being bent. At this time, the inclined slide is set at an angle under the action of the torsion spring. When the air pump is not working, the sheet metal part will fall down and slide with the inclined slide, without the need for manual unloading.

[0012] A further improvement of the technical solution of the present utility model is that: the inclined slide is set into an inclined surface, the inner side wall of the fixed base is rotatably connected to a roller, the roller and the inclined slide are slidably connected, and the top of the upper mold is detachably connected to a plurality of clamps distributed in a linear array, and the upper mold is fixedly connected to the device body through the clamps.

[0013] The above-mentioned technical solution is adopted, in which the fixed base and the roller on the upper mold side are fitted with the inclined surface of the inclined slide, and squeeze the inclined slide into a vertical state, so as to prevent the inclined slide from hindering the bending of the sheet metal. The roller effectively reduces the wear between the fixed base and the inclined slide, thereby extending the service life of the device.

[0014] A further improvement of the technical solution of the present utility model is that: a limiting groove is symmetrically provided at the bottom of the supporting baffle, a first spring is fixedly connected to the inner side wall of the limiting groove, an end of the first spring away from the limiting groove is fixedly connected to a fixed baffle, and a triangular limiting block is fixedly connected to the front end of the fixed baffle.

[0015] By adopting the above technical solution, the supporting baffle can slide in the limiting baffle, and the triangular limiting block can slide in the limiting groove under the action of the first spring, wherein the fixed baffle can prevent the triangular limiting block from escaping from the limiting groove.

[0016] A further improvement of the technical solution of the present invention is that the triangular limit block is arranged in an inclined surface, the side of the fixed baffle close to the limit groove is in contact with the inner side wall of the support baffle, and the triangular limit block and the support baffle are slidably connected.

[0017] The above-mentioned technical solution is adopted, in which the support baffle is pushed. At this time, the inclined surface of the triangular limit block rubs against the rectangular hole on the inner wall of the limit baffle, and the triangular limit block shrinks into the limit groove. Under the action of the triangular limit block and the first spring, the position of the support baffle is adjusted.

[0018] A further improvement of the technical solution of the present utility model is that: a plurality of No. 1 lower molds are fixedly connected to the top of the operating platform, a No. 2 lower mold is slidably connected to one side of the No. 1 lower mold, a telescopic rod is symmetrically installed on the bottom of the No. 2 lower mold, the outer wall of the telescopic rod is sleeved with a second spring, and the No. 1 lower mold and the No. 2 lower mold are fixedly connected to a rectangular plate on the side away from the device body.

[0019] By adopting the above technical solution, the telescopic rod and the second spring at the bottom of the No. 2 lower mold can not only play a buffering role but also prevent the sheet metal from getting stuck on the inner side of the No. 2 lower mold.

[0020] A further improvement of the technical solution of the present utility model is that the second lower die and the rectangular plate are arranged as an integrated structure.

[0021] By adopting the above technical solution, the rectangular plate in this solution can provide a small amount of support for the sheet metal parts, thereby increasing the stability of the sheet metal parts.

[0022] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0023] 1. The utility model provides a CNC bending device for sheet metal parts, which is connected to an air pump through adsorption holes on the surface of an upper die. During the bending process, the upper die presses the sheet metal part down and bends it into shape. At this time, the adsorption holes and the sheet metal part gradually fit together, causing the air pump to work and make the sheet metal part fit on the surface of the upper die. After bending, the sheet metal part rises with the upper die, replacing the worker's use of hands to lift the sheet metal part, saving the worker's physical strength and ensuring that the upper die descends to the right distance.

[0024] 2. The utility model provides a CNC bending device for sheet metal parts. The inclined slide is set at an inclined surface under the force of the torsion spring. When the air pump is not working, the sheet metal parts will fall downward and slide along the inclined slide. There is no need for manual unloading, which reduces the burden on the staff. It should be noted that when the upper mold moves downward to bend the sheet metal parts, the fixed base and the roller on one side of the upper mold fit into the inclined surface of the inclined slide and squeeze the inclined slide into a vertical state to prevent the inclined slide from hindering the bending of the sheet metal parts. The roller effectively reduces the wear between the fixed base and the inclined slide, thereby extending the service life of the device.

[0025] 3. The utility model provides a CNC bending device for sheet metal parts, which can provide a small amount of support for the sheet metal parts through a rectangular plate. The telescopic rod and the second spring at the bottom of the No. 2 lower die can not only play a buffering role but also prevent the sheet metal parts from getting stuck on the inner side of the No. 2 lower die. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;

[0029] Figure 3 This is a schematic diagram of the overall structure of the support baffle in the present utility model;

[0030] Figure 4 For this utility model Figure 3 Enlarged view of point B in the middle;

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of the upper mold and the fixed base of the utility model;

[0032] Figure 6 It is a schematic diagram of the three-dimensional structure of the No. 2 lower mold in the utility model.

[0033] In the figure: 1. Device body; 2. Control panel; 3. Operating platform; 4. Lower die No. 1; 5. Lower die No. 2; 6. Upper die; 7. Limit baffle; 8. Adsorption hole; 9. Support baffle; 10. Inclined slide; 11. Triangular limit block; 12. Fixed baffle; 13. Limit slot; 14. First spring; 15. Clamp; 16. Fixed base; 17. Roller; 18. Rectangular plate; 19. Telescopic rod; 20. Second spring. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to the embodiments:

[0035] Example 1

[0036] like Figure 1 and Figure 2 As shown, the utility model provides a CNC bending device for sheet metal parts, including a device body 1; a control panel 2 is fixedly connected to one side of the device body 1, an operating platform 3 is fixedly connected to the front end of the device body 1, an upper mold 6 is provided at the front end of the device body 1, and a plurality of adsorption holes 8 in a linear array are opened on the surface of the upper mold 6, the adsorption holes 8 are connected to an external air pump through a pipeline, and the adsorption holes 8 are used to adsorb the sheet metal parts on the outside of the upper mold 6.

[0037] In this embodiment, since the sheet metal part will inevitably warp during the bending process, the staff is required to manually lift the sheet metal part to maintain the stability of the bending, which causes fatigue in the staff's hands and reduces work efficiency.

[0038] Specifically, the upper mold 6 is connected to the air pump through the adsorption holes 8 on the surface. During the bending process, the upper mold 6 presses the sheet metal down and bends it into shape. At this time, the adsorption holes 8 gradually fit the sheet metal, causing the air pump to work and make the sheet metal fit on the surface of the upper mold 6. After bending, the sheet metal rises with the upper mold 6, replacing the staff's use of hands to lift the sheet metal, saving the staff's physical strength, and at the same time ensuring that the upper mold 6 descends to the right distance.

[0039] Example 2

[0040] like Figure 3 and Figure 5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a limiting baffle 7 is provided inside the device body 1, and a supporting baffle 9 is slidably connected to the inner side wall of the limiting baffle 7, and the top of the supporting baffle 9 is rotatably connected to the inclined slide 10 through a torsion spring, and the upper mold 6 is fixedly connected to a side close to the supporting baffle 9 with a plurality of fixed bases 16 distributed in a linear array, the fixed base 16 and the inclined slide 10 are slidably connected, and the inclined slide 10 is set to an inclined surface, and the inner side walls of the fixed base 16 are rotatably connected with rollers 17, and the rollers 17 and the inclined slide 10 are slidably connected, and the top of the upper mold 6 is detachably connected with a plurality of clamps 15 distributed in a linear array, and the upper mold 6 is fixedly connected to the device body 1 through the clamps 15.

[0041] In this embodiment, after the sheet metal is bent, it rises with the upper mold 6. At this time, the inclined slide 10 is set at an inclined surface under the action of the torsion spring. When the air pump is not working, the sheet metal will fall downward and slide with the inclined slide 10. There is no need for manual unloading, which reduces the burden on the staff. It should be noted that when the upper mold 6 moves downward to bend the sheet metal, the fixed base 16 and the roller 17 on one side of the upper mold 6 are in contact with the inclined surface of the inclined slide 10, and squeeze the inclined slide 10 into a vertical state, avoiding the inclined slide 10 hindering the bending of the sheet metal. The roller 17 effectively reduces the wear between the fixed base 16 and the inclined slide 10, thereby extending the service life of the device.

[0042] Example 3

[0043] like Figure 3 and Figure 4 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a limiting groove 13 is symmetrically opened at the bottom of the support baffle 9, and a first spring 14 is fixedly connected to the inner wall of the limiting groove 13, and the end of the first spring 14 away from the limiting groove 13 is fixedly connected to a fixed baffle 12, and the front end of the fixed baffle 12 is fixedly connected to a triangular limiting block 11, which is arranged in an inclined surface, and the side of the fixed baffle 12 close to the limiting groove 13 is in contact with the inner wall of the support baffle 9, and the triangular limiting block 11 and the support baffle 9 are slidably connected.

[0044] In this embodiment, the support baffle 9 can slide in the limit baffle 7, and the triangular limit block 11 can slide in the limit groove 13 under the action of the first spring 14, wherein the fixed baffle 12 can prevent the triangular limit block 11 from disengaging from the limit groove 13. During use, the sliding support baffle 9 needs to be adjusted accordingly according to the position of the sheet metal. The staff needs to push the support baffle 9. At this time, the inclined surface of the triangular limit block 11 rubs against the rectangular hole on the inner wall of the limit baffle 7, and causes the triangular limit block 11 to shrink into the limit groove 13. Under the action of the triangular limit block 11 and the first spring 14, the position of the support baffle 9 is adjusted.

[0045] Example 4

[0046] like Figure 1 and Figure 6 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a plurality of No. 1 lower molds 4 are fixedly connected to the top of the operating platform 3, and a No. 2 lower mold 5 is slidably connected to one side of the No. 1 lower mold 4, and a telescopic rod 19 is symmetrically installed on the bottom of the No. 2 lower mold 5. The outer wall of the telescopic rod 19 is sleeved with a second spring 20, and the No. 1 lower mold 4 and the No. 2 lower mold 5 are fixedly connected to the side away from the device body 1 with a rectangular plate 18, and the No. 2 lower mold 5 and the rectangular plate 18 are set as an integrated structure.

[0047] In this embodiment, the rectangular plate 18 can provide a small amount of support for the sheet metal part. The telescopic rod 19 and the second spring 20 at the bottom of the No. 2 lower mold 5 can not only play a buffering role but also prevent the sheet metal part from being stuck on the inner side of the No. 2 lower mold 5.

[0048] The working principle of the sheet metal CNC bending device is explained in detail below.

[0049] like Figures 1-6 As shown, during use, the sheet metal is first placed above the No. 2 lower die 5 and the No. 1 lower die 4. The rectangular plate 18 can make a small lift for the sheet metal. The telescopic rod 19 and the second spring 20 at the bottom of the No. 2 lower die 5 can not only play a buffering role but also prevent the sheet metal from being stuck inside the No. 2 lower die 5. After the staff sets the data parameters on the surface of the control panel 2, the upper die 6 starts the bending work and is connected to the air pump through the adsorption hole 8 on the surface of the upper die 6. During the bending process, the upper die 6 The sheet metal is pressed down and bent into shape. At this time, the adsorption holes 8 are gradually fitted with the sheet metal, so that the air pump works and the sheet metal is fitted to the surface of the upper die 6. After bending, the sheet metal rises with the upper die 6, replacing the staff's use of hands to lift the sheet metal, saving the staff's physical strength and ensuring that the upper die 6 has a proper descending distance. After bending, the sheet metal rises with the upper die 6. At this time, the inclined slide 10 is set at an inclined surface under the action of the torsion spring. When the air pump is not working, the sheet metal will fall downward and slide with the inclined slide 10, without Manual unloading reduces the burden on staff. It should be noted that when the upper mold 6 moves downward to bend the sheet metal, the fixed base 16 and the roller 17 on one side of the upper mold 6 fit into the inclined surface of the inclined slide 10 and squeeze the inclined slide 10 into a vertical state to prevent the inclined slide 10 from hindering the bending of the sheet metal. The roller 17 effectively reduces the wear between the fixed base 16 and the inclined slide 10. The support baffle 9 can slide in the limit baffle 7, and the triangular limit block 11 can slide in the limit groove 13 under the action of the first spring 14. The fixed baffle 12 can prevent the triangular limit block 11 from disengaging from the limit groove 13. During use, the sliding support baffle 9 needs to be adjusted accordingly according to the position of the sheet metal. The staff needs to push the support baffle 9. At this time, the inclined surface of the triangular limit block 11 rubs against the rectangular hole on the inner wall of the limit baffle 7, and causes the triangular limit block 11 to retract into the limit groove 13. The position of the support baffle 9 is adjusted under the action of the triangular limit block 11 and the first spring 14.

[0050] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A CNC bending device for sheet metal parts, comprising a device body (1); characterized in that: A control panel (2) is fixedly connected to one side of the device body (1), an operating platform (3) is fixedly connected to the front end of the device body (1), an upper mold (6) is provided at the front end of the device body (1), a plurality of adsorption holes (8) in a linear array are provided on the surface of the upper mold (6), the adsorption holes (8) are connected to an external air pump through a pipeline, and the adsorption holes (8) are used to adsorb sheet metal parts on the outside of the upper mold (6).

2. The sheet metal CNC bending device according to claim 1, characterized in that: A limiting baffle (7) is provided inside the device body (1), and a supporting baffle (9) is slidably connected to the inner side wall of the limiting baffle (7), and the top of the supporting baffle (9) is rotatably connected to an inclined slide (10) through a torsion spring. A side of the upper mold (6) close to the supporting baffle (9) is fixedly connected to a plurality of fixed bases (16) distributed in a linear array, and the fixed base (16) and the inclined slide (10) are slidably connected.

3. The sheet metal CNC bending device according to claim 2, characterized in that: The inclined slide (10) is arranged to be an inclined surface, and rollers (17) are rotatably connected to the inner side walls of the fixed base (16), and the rollers (17) and the inclined slide (10) are slidably connected. The top of the upper mold (6) is detachably connected to a plurality of clamps (15) distributed in a linear array, and the upper mold (6) is fixedly connected to the device body (1) through the clamps (15).

4. The sheet metal CNC bending device according to claim 3, characterized in that: The bottom of the support baffle (9) is symmetrically provided with a limiting groove (13), the inner side wall of the limiting groove (13) is fixedly connected to a first spring (14), one end of the first spring (14) away from the limiting groove (13) is fixedly connected to a fixed baffle (12), and the front end of the fixed baffle (12) is fixedly connected to a triangular limiting block (11).

5. The sheet metal CNC bending device according to claim 4, characterized in that: The triangular limiting block (11) is arranged in an inclined surface, and the side of the fixed baffle (12) close to the limiting groove (13) is in contact with the inner side wall of the supporting baffle (9), and the triangular limiting block (11) and the supporting baffle (9) are slidably connected.

6. The sheet metal CNC bending device according to claim 1, characterized in that: The top of the operating platform (3) is fixedly connected to a plurality of No. 1 lower molds (4), one side of each No. 1 lower mold (4) is slidably connected to a No. 2 lower mold (5), a telescopic rod (19) is symmetrically installed at the bottom of each No. 2 lower mold (5), and the outer wall of each telescopic rod (19) is sleeved with a second spring (20), and the No. 1 lower mold (4) and the No. 2 lower mold (5) are fixedly connected to a rectangular plate (18) on the side away from the device body (1).

7. The sheet metal CNC bending device according to claim 6, characterized in that: The second lower die (5) and the rectangular plate (18) are configured as an integrated structure.

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