CNC sheet metal bending machine

Abstract

The utility model relates to the technical field of bending machines, and discloses a CNC sheet metal bending machine, including a base, the top left and right sides of the base are fixedly connected with fixed blocks, the tops of the two fixed blocks are fixedly connected with fixed frames, the insides of the two fixed frames are rotatably connected with bidirectional threaded rods, the outsides of the two bidirectional threaded rods are threadedly connected with threaded sleeves, the front sides of the two bidirectional threaded rods are fixedly connected with rotating disks, the outsides of the two threaded sleeves are fixedly connected with clamping plates, the insides of the two fixed frames are fixedly connected with fixed rods, the outsides of the two fixed rods are sleeved with springs, and the adjacent sides of the two fixed frames are fixedly connected with concave frames. In the utility model, the lower bending mold can be stably clamped and fixed, and the lower bending molds of different sizes can be quickly replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a numerically controlled plate bending machine. Background Art

[0002] CNC hydraulic sheet metal bending machine is a machine tool used to bend metal sheets into preset shapes. It is widely used in the manufacturing industry and sheet metal processing. CNC hydraulic sheet metal bending machine is controlled by a CNC system and can accurately bend the sheet metal into the required geometric shape. This machine usually has high precision and efficiency and is one of the indispensable equipment in modern manufacturing.

[0003] After searching, the Chinese patent document announcement number is: CN210754486U. The utility model relates to the technical field of bending machines, specifically a CNC sheet metal bending machine, including a bending machine body, a base is provided under the bending machine body, and the base is fixedly connected to the lower die by fixing bolts. An upper die is provided on the bending machine body at the upper end of the lower die, and the upper end of the upper die is connected to the output pipe of the hydraulic cylinder. A fixed plate is welded on the front face of the lower end of the lower die, and a supporting rod is welded on the front face of the fixed plate. The supporting rod is bent upward, and a supporting plate is welded on the upper end of the supporting rod. The beneficial effects are: it has an automatic return structure, and the sheet metal can be automatically ejected after being bent by the upper die through the bending groove on the lower die, which increases the convenience of taking materials, prevents the sheet metal from being stuck in the bending groove and affecting the use, increases the use effect, and can also effectively reduce the use of manpower, improve production efficiency, increase safety, and eliminate the potential safety hazards that may occur when taking materials after material jamming.

[0004] Although the above patent mentioned in the specification that "the utility model has an automatic return structure, and the sheet material can be automatically ejected after being bent by the upper die through the bending groove on the lower die, which increases the convenience of taking out the material, prevents the sheet material from being stuck in the bending groove and affecting the use, and increases the use effect. It can also effectively reduce the use of manpower, improve production efficiency, increase safety, and eliminate the potential safety hazards that may occur when taking out the material after the material is stuck", but in the bending process, it is impossible to stably clamp the bending lower die while being able to replace and adapt to the bending lower die of different sizes. Therefore, in view of the above shortcomings, a CNC sheet metal bending machine is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and the proposed CNC sheet metal bending machine is intended to improve the problem that some CNC sheet metal bending machines in the prior art cannot realize the rapid replacement of bending lower molds of different sizes.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A CNC sheet metal bending machine comprises a base, wherein the left and right sides of the top of the base are fixedly connected with fixed blocks, the tops of the two fixed blocks are fixedly connected with fixed frames, the interiors of the two fixed frames are rotatably connected with bidirectional threaded rods, the exteriors of the two bidirectional threaded rods are threadedly connected with threaded sleeves, the front sides of the two bidirectional threaded rods are fixedly connected with rotating disks, the exteriors of the two threaded sleeves are fixedly connected with clamping plates, the interiors of the two fixed frames are fixedly connected with fixed rods, the exteriors of the two fixed rods are sleeved with spring 1, the adjacent sides of the two fixed frames are fixedly connected with concave frames, the interiors of the two concave frames are fixedly connected with two sliding columns, the exteriors of the multiple sliding columns are slidably connected with sleeves, the interiors of the multiple sleeves are provided with limiting components, the interiors of the multiple sleeves are provided with spring 2, a bending lower mold is provided on the top of the base, and a grating component is provided on the front side of the base.

[0008] Furthermore, the plurality of limiting assemblies each include a limiting plate, the exteriors of the plurality of limiting plates are slidably connected to the interiors of the plurality of sleeves, respectively, and the interiors of the plurality of limiting plates each include a limiting groove.

[0009] Furthermore, the grating assembly includes a grating ruler, the rear side of the grating ruler is fixedly connected to the front side of the base, and the outside of the grating ruler is fixedly connected to two support plates.

[0010] The top of the plurality of sliding grooves is provided with a plurality of sliding plates, and the plurality of sliding plates are slidably connected to the bottom of the plurality of sliding plates.

[0011] Furthermore, a fixed arm is provided on the right side of the top seat, a control instrument is fixedly connected to the front side of the fixed arm, and a display screen is fixedly connected to the front side of the control instrument.

[0012] Furthermore, the outside of the clamping plate is slidably connected to the inside of the concave frame, and the outside of the limiting plate is slidably connected to the inside of the limiting groove.

[0013] Furthermore, one end of the second spring is fixedly connected to the inside of the sleeve, and the other end of the second spring is fixedly connected to a side of the limiting plate away from the sliding column.

[0014] Furthermore, the external thread of the fixing bolt is connected to the inside of the bolt hole, and the bottom of the limiting column is fixedly connected to the top of the bending upper mold.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, the displacement of the clamping plate is driven by the cooperation of the bidirectional threaded rod and the threaded sleeve, and then the elastic force of the spring one and the cooperation of the sleeve and the spring two can be used for stable clamping, so that the bending lower mold can be stably clamped and fixed, and the bending lower molds of different sizes can be quickly replaced.

[0017] 2. In the utility model, the displacement and stamping of the upper bending mold can be buffered and adapted by the compression and rebound of the spring three and the displacement of the limit column and the limit plate, so that the bending process can be more stable without causing damage to the bent workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of the CNC sheet metal bending machine proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the fixed frame structure of the CNC sheet metal bending machine proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the sleeve structure of the CNC sheet metal bending machine proposed by the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the top seat of the CNC sheet metal bending machine proposed by the utility model;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0023] Legend:

[0024] 1. Base; 2. Fixed block; 3. Fixed frame; 4. Bidirectional threaded rod; 5. Threaded sleeve; 6. Rotating disk; 7. Clamping plate; 8. Fixed rod; 9. Spring one; 10. Concave frame; 11. Sliding column; 12. Sleeve; 13. Limiting groove; 14. Limiting disk; 15. Spring two; 16. Bending lower mold; 17. Grating ruler; 18. Support plate; 19. Support frame; 20. Top seat; 21. Hydraulic cylinder; 22. Push rod; 23. Sliding plate; 24. Fixed clamp; 25. Fixed bolt; 26. Connecting plate; 27. Fixed plate; 28. Bolt hole; 29. ​​Sliding groove; 30. Sliding disk; 31. Sliding rod; 32. Spring three; 33. Bending upper mold; 34. Limiting column; 35. Limiting plate; 36. Fixed arm; 37. Control instrument; 38. Display screen. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figure 1 - Figure 3 , an embodiment provided by the utility model: a CNC sheet metal bending machine, including a base 1, the base 1 serves as the basic supporting structure of the entire equipment to ensure the stable operation of the equipment, the top left and right sides of the base 1 are fixedly connected with fixed blocks 2, the tops of the two fixed blocks 2 are fixedly connected with fixed frames 3, the fixed blocks 2 are used to support the fixed frames 3 to enhance the stability of the overall structure, the insides of the two fixed frames 3 are rotatably connected with bidirectional threaded rods 4, the outsides of the two bidirectional threaded rods 4 are threadedly connected with threaded sleeves 5, the bidirectional threaded rods 4 are threadedly connected with the threaded sleeves 5 to realize the movement of the clamping plate 7, the front sides of the two bidirectional threaded rods 4 are fixedly connected with rotating disks 6, the rotating disk 6 is for the convenience of the operator to rotate the bidirectional threaded rods 4, the outsides of the two threaded sleeves 5 are fixedly connected with clamping plates 7, the insides of the two fixed frames 3 are fixedly connected with fixed rods 8, and the outsides of the two fixed rods 8 are sleeved with springs 9;

[0027] The fixing rod 8 and the spring 1 9 play a buffering and supporting role. The adjacent sides of the two fixing frames 3 are fixedly connected with a concave frame 10. The outside of the clamping plate 7 is slidably connected to the inside of the concave frame 10, and the concave frame 10 plays a guiding and supporting role. The insides of the two concave frames 10 are fixedly connected with two sliding columns 11. The outsides of multiple sliding columns 11 are slidably connected with sleeves 12. The insides of multiple sleeves 12 are provided with limiting components, which play a limiting and supporting role. Multiple limiting components include limiting plates 14. The outsides of multiple limiting plates 14 are respectively slidably connected to the insides of multiple sleeves 12. The insides of multiple limiting plates 14 are provided with limiting grooves 13. The limiting grooves 13 are designed here as sliding spaces for the limiting plates 14. The outsides of the limiting plates 14 are slidably connected to the inside of the limiting grooves 13. The insides of multiple sleeves 12 are provided with springs 2 15, and one end of the springs 2 15 is fixedly connected to the inside of the sleeve 12.

[0028] The other end of the spring 2 15 is fixedly connected to the side of the limit plate 14 away from the sliding column 11. The spring 2 15 is arranged inside the sleeve 12, one end is fixedly connected to the sleeve 12, and the other end is fixedly connected to the limit plate 14, playing a buffering and supporting role. A bending lower mold 16 is arranged on the top of the base 1, and a grating assembly is arranged on the front side of the base 1. The grating assembly includes a grating scale 17. The rear side of the grating scale 17 is fixedly connected to the front side of the base 1. Two support plates 18 are fixedly connected to the outside of the grating scale 17, and the support plates 18 play a supporting and protective role.

[0029] Reference Figure 3 - Figure 5 The rear side of the base 1 is fixedly connected with a support frame 19, and the top of the support frame 19 is fixedly connected with a top seat 20. The support frame 19 plays a supporting and connecting role. The inner top side of the top seat 20 is fixedly connected with a hydraulic cylinder 21. The hydraulic cylinder 21 provides power. The driving end of the hydraulic cylinder 21 is fixedly connected with a push rod 22. The push rod 22 transmits power. The bottom of the push rod 22 is fixedly connected with a sliding plate 23. The sliding plate 23 plays a supporting and guiding role. The bottom of the sliding plate 23 is fixedly connected with a plurality of fixing clamps 24. The fixing clamps 24 are used to clamp and fix the upper bending mold 33;

[0030] The outside of the plurality of fixing clips 24 is provided with two fixing bolts 25, the inside of the plurality of fixing bolts 25 is slidably connected with a fixing plate 27, the outside of the fixing plate 27 is fixedly connected with a connecting plate 26, the inside of the fixing plate 27 is provided with a plurality of bolt holes 28, the bolt holes 28 cooperate with the fixing bolts 25 to clamp and fix the fixing plate 27, the outside of the fixing bolts 25 is threadedly connected to the inside of the bolt holes 28, the inside of the fixing plate 27 is provided with a plurality of sliding grooves 29, the sliding grooves 29 are designed here to be used for displacement and reset of the sliding plate 30, the inside of the plurality of sliding grooves 29 is slidably connected with the sliding plate 30, and the bottom of the plurality of sliding plates 30 is fixedly connected with a sliding rod 31;

[0031] The outside of the multiple sliding rods 31 are all sleeved with spring three 32, which plays a buffering and supporting role. The bottom of the multiple sliding rods 31 is fixedly connected to the bending upper mold 33, and the bending upper mold 33 contacts the sheet to be bent to play a bending role. The inside of the connecting plate 26 is slidably connected to multiple limit columns 34, the bottom of the limit columns 34 is fixedly connected to the top of the bending upper mold 33, and the top of the multiple limit columns 34 is fixedly connected to the limit plate 35. A fixed arm 36 is provided on the right side of the top seat 20, and a control instrument 37 is fixedly connected to the front side of the fixed arm 36. The control instrument 37 is used to operate and display the device status. The front side of the control instrument 37 is fixedly connected to a display screen 38, which is used to display the device status and operation information.

[0032] Working principle: when it is necessary to disassemble the lower bending mold 16, it is only necessary to rotate the rotating disk 6, and the rotating disk 6 can drive the bidirectional threaded rod 4 to rotate, so that the threaded sleeve 5 can be displaced, and then the clamping plate 7 can be displaced with the help of the displacement of the threaded sleeve 5, so that the spring 1 9 can be stretched, and at the same time, the sliding column 11 will slide on the outside of the sleeve 12, and then the spring 2 15 in the compressed state will continue to be compressed, and then the lower bending mold 16 can be taken out from between the clamping plates 7 with the help of the displacement of the clamping plates 7. At this time, the clamping plates 7 can be replaced, so as to adapt to the lower bending molds 16 of different sizes. When it is necessary to clamp and fix the lower bending mold 16, the rotating disk 6 can be rotated again, so that the threaded sleeve 5 can be displaced, and then the clamping plate 7 can be displaced. At this time, The spring 1 9 will be compressed and the sleeve 12 will be displaced, and then the spring 2 15 will rebound. At this time, the elastic force of the spring 2 15 and the spring 1 9 can make the clamping plate 7 more stable. When the bending workpiece needs to be bent, the workpiece only needs to be placed on the top of the support plate 18, and the position is detected and located with the help of the grating ruler 17. Then the hydraulic cylinder 21 can be started, and the push rod 22 can be displaced by the hydraulic cylinder 21, so that the sliding plate 23 can be displaced, and then the workpiece at the bottom can be bent with the help of the displacement of the bending upper mold 33. At this time, as the bending upper mold 33 moves downward and contacts the workpiece, the downward stamping of the bending upper mold 33 can be buffered by the displacement of the sliding rod 31, thereby ensuring stability during the bending process.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A CNC sheet metal bending machine, comprising a base (1), characterized in that: The top left and right sides of the base (1) are fixedly connected with fixed blocks (2), the tops of the two fixed blocks (2) are fixedly connected with fixed frames (3), the insides of the two fixed frames (3) are rotatably connected with bidirectional threaded rods (4), the outsides of the two bidirectional threaded rods (4) are threadedly connected with threaded sleeves (5), the front sides of the two bidirectional threaded rods (4) are fixedly connected with rotating disks (6), the outsides of the two threaded sleeves (5) are fixedly connected with clamping plates (7), the insides of the two fixed frames (3) are fixedly connected with fixed rods (8), and the two The outside of the fixed rod (8) is sleeved with a spring 1 (9), the adjacent sides of the two fixed frames (3) are fixedly connected with a concave frame (10), the inside of the two concave frames (10) are fixedly connected with two sliding columns (11), the outsides of the plurality of sliding columns (11) are slidably connected with sleeves (12), the insides of the plurality of sleeves (12) are provided with a limit assembly, the insides of the plurality of sleeves (12) are provided with a spring 2 (15), the top of the base (1) is provided with a bending lower mold (16), and the front side of the base (1) is provided with a grating assembly.

2. The CNC sheet metal bending machine according to claim 1, characterized in that: The plurality of limit assemblies all comprise limit plates (14), the exteriors of the plurality of limit plates (14) are respectively slidably connected to the interiors of the plurality of sleeves (12), and the interiors of the plurality of limit plates (14) are all provided with limit grooves (13).

3. The CNC sheet metal bending machine according to claim 1, characterized in that: The grating assembly comprises a grating ruler (17), the rear side of the grating ruler (17) is fixedly connected to the front side of the base (1), and the outside of the grating ruler (17) is fixedly connected to two support plates (18).

4. The CNC sheet metal bending machine according to claim 1, characterized in that: The rear side of the base (1) is fixedly connected to a support frame (19), the top of the support frame (19) is fixedly connected to a top seat (20), the inner top side of the top seat (20) is fixedly connected to a hydraulic cylinder (21), the driving end of the hydraulic cylinder (21) is fixedly connected to a push rod (22), the bottom of the push rod (22) is fixedly connected to a sliding plate (23), the bottom of the sliding plate (23) is fixedly connected to a plurality of fixing clamps (24), the outside of each of the plurality of fixing clamps (24) is provided with two fixing bolts (25), the inside of each of the plurality of fixing bolts (25) is slidably connected to a fixing plate (27), the outside of the fixing plate (27) is fixedly connected to A connecting plate (26), wherein a plurality of bolt holes (28) are provided inside the fixing plate (27), a plurality of sliding grooves (29) are provided inside the fixing plate (27), a plurality of sliding grooves (29) are slidably connected to sliding plates (30), a plurality of sliding plates (30) are fixedly connected to the bottom with sliding rods (31), a plurality of sliding rods (31) are sleeved with springs (32) outside, a plurality of sliding rods (31) are fixedly connected to the bottom with a bending upper mold (33), a plurality of limiting columns (34) are slidably connected inside the connecting plate (26), and a plurality of limiting columns (34) are fixedly connected to the top with a limiting plate (35).

5. The CNC sheet metal bending machine according to claim 4, characterized in that: A fixed arm (36) is provided on the right side of the top seat (20), a control instrument (37) is fixedly connected to the front side of the fixed arm (36), and a display screen (38) is fixedly connected to the front side of the control instrument (37).

6. The CNC sheet metal bending machine according to claim 2, characterized in that: The outside of the clamping plate (7) is slidably connected to the inside of the concave frame (10), and the outside of the limiting plate (14) is slidably connected to the inside of the limiting groove (13).

7. The CNC sheet metal bending machine according to claim 2, characterized in that: One end of the second spring (15) is fixedly connected to the inside of the sleeve (12), and the other end of the second spring (15) is fixedly connected to the side of the limiting plate (14) away from the sliding column (11).

8. The CNC sheet metal bending machine according to claim 4, characterized in that: The external thread of the fixing bolt (25) is connected to the inside of the bolt hole (28), and the bottom of the limiting column (34) is fixedly connected to the top of the bending upper mold (33).

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