Blade replacing assembly for plate cutting machine

Abstract

The utility model relates to the technical field of blade replacement, and discloses a blade replacement assembly for a plate cutting machine, which is characterized in that safe work is realized by arranging a dismounting rod, a working shaft, a dismounting rod and the like, when the dismounting rod rotates to a certain angle, an arc groove is driven to slide for a certain distance, and the arc groove drives a connecting rod to completely push a sliding groove downwards; the top wall of the rectangular groove completely compresses the spring, the sliding block is completely hidden in the sliding groove, then the blade can slide towards one end of the working shaft, the blade is detached, the blade is pressed towards the direction of the working shaft, the screw rod is limited by a disc or a round groove thread and cannot rotate, and the driving rod can move towards the interior of the through groove. And the teeth and the tooth grooves are separated from each other, so that the effect of protecting safety is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of blade replacement, in particular to a blade replacement component for a plate cutting machine. Background Art

[0002] In the process of machining, the common methods for plate cutting include manual cutting, semi-automatic cutting machine cutting, and numerical control cutting machine cutting. Manual cutting is flexible and convenient, but the cutting quality is poor, the dimensional error is large, the material waste is large, the subsequent processing workload is large, and at the same time, the working conditions are poor and the production efficiency is low. Among semi-automatic cutting machines, the profile copying cutting machine has better cutting quality of workpieces. Since it uses cutting dies, it is not suitable for single-piece, small-batch, and large workpiece cutting. Although other types of semi-automatic cutting machines reduce the labor intensity of workers, their functions are simple and only suitable for cutting some parts with regular shapes. Compared with manual and semi-automatic cutting methods, numerical control cutting can effectively improve the cutting efficiency and quality of plates and reduce the labor intensity of operators. In some small and medium-sized enterprises in China, and even in some large enterprises, the use of manual cutting and semi-automatic cutting methods is still relatively common.

[0003] The patent document with the authorized announcement number of CN205638067U discloses a numerical control cutting machine blade replacement device, which includes a base. A fixing frame is fixedly installed on the top side of the base. A telescopic cylinder is fixedly installed on the fixing frame. A fixing box is welded on the piston shaft of the telescopic cylinder. A motor is fixedly installed in the fixing box. A connecting shaft is welded on the output shaft of the motor. A disc is fixedly sleeved on the outer side of the connecting shaft. A plurality of positioning shafts are welded on one side of the disc. A blade is movably sleeved on the outer side of the connecting shaft. The blade is sleeved on the outer sides of the plurality of positioning shafts. A threaded shaft is rotatably arranged at one end of the connecting shaft. A rotating disc is welded on the left end of the threaded shaft. An inner cavity is formed in the connecting shaft. The structure of the utility model is reasonably designed, which can facilitate the disassembly and replacement of the blade, and has simple operation, easy operation and use, and high reliability. However, this device has certain deficiencies.

[0004] For example, when replacing the blade, the user may accidentally touch the rotating disc, causing the threaded shaft to move, which affects the replacement of the blade and increases the working process during the blade replacement.

[0005] In addition, when the motor drives the connecting shaft, it will drive the rotating disc to move together, causing the up and down movement of the stopper, and the blade may fly out of the outer ring of the connecting shaft, posing a great safety hazard to personal safety, and the user is not safe during the use process. Summary of the Utility Model

[0006] In view of the deficiencies of the prior art, the present utility model provides a blade replacement component for a sheet cutting machine, which has the advantages of preventing accidental contact and being safer, and solves the problems raised in the above-mentioned background art.

[0007] The present utility model provides the following technical solutions: A blade replacement component for a sheet cutting machine includes a box body. A motor is fixedly installed on the top of the box body. A working shaft is rotatably installed inside the box body. Anti-slip sleeves are fixedly sleeved on the outer circles of one end of the working shaft and the output shaft of the motor respectively. A belt is rotatably sleeved between the outer circles of the two anti-slip sleeves. A blade is rotatably sleeved on the outer circle of the other end of the working shaft. A suction cup is fixedly installed at the other end of the working shaft. A disassembly rod is slidably sleeved inside the working shaft on one side of the suction cup.

[0008] Preferably, a snap ring is fixedly sleeved on the outer circle of the working shaft on one side of the blade. A washer is fixedly sleeved on the outer circle of the working shaft between the snap ring and the blade. A functional cavity is opened inside the working shaft. A circular groove is opened on the inner wall of the functional cavity of the working shaft. A threaded groove is opened inside the circular groove. The disassembly rod is threadedly sleeved inside the functional cavity and the circular groove. A plurality of sliding grooves are evenly opened in a circular shape on the outer circle of the working shaft on the other side of the blade. An arc-shaped groove is opened inside the working shaft between the inner wall of the functional cavity and the sliding grooves.

[0009] Preferably, a bearing is fixedly sleeved on the inner circle of the suction cup. A plurality of magnetic blocks A are evenly arranged in a circular shape on the surface of the suction cup away from the working shaft. The disassembly rod is rotatably sleeved inside the inner circle of the bearing.

[0010] Preferably, a driving rod is fixedly installed on the surface of the disassembly rod close to the working shaft. A screw rod is slidably sleeved on the outer circle of the driving rod. Threads are provided on the outer circle of the screw rod. The threads on the outer circle of the screw rod are adapted to the threaded groove on the inner circle of the circular groove. A through groove is opened inside the screw rod. A tooth groove is opened on one side of the through groove inside the screw rod. Teeth with the same size as the tooth groove are provided at the end of the driving rod inside the through groove. The teeth are adapted to the tooth groove. A plurality of magnetic blocks B are evenly arranged in a circular shape on the surface of the disassembly rod on the outer circle of the driving rod. The positions of the magnetic blocks B and the magnetic blocks A correspond to each other. The magnetic blocks B and the magnetic blocks A attract each other with opposite magnetic poles.

[0011] Preferably, a fixing block is provided at the bottom of the inner wall of the sliding groove. A slider is slidably sleeved inside the sliding groove. A rectangular groove is opened on the surface of the slider close to the fixing block. The rectangular groove is adapted to the size of the fixing block. A spring is fixedly connected between the top of the fixing block and the top wall of the rectangular groove.

[0012] Preferably, a disc is slidably mounted on the inner wall of the arc-shaped groove outside the screw. A threaded groove is provided in the inner ring of the disc. The threaded groove in the inner ring of the disc is adapted to the external thread of the screw. A rotating block is evenly arranged in an annular shape on the surface of the disc close to the disassembly rod. A connecting rod is movably connected between the rotating block and the sliding groove.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. For the blade replacement component of the sheet cutting machine, by setting structures such as a disassembly rod and a suction cup, the functions of disassembly and anti-misoperation during the working process are realized. The original position of the disassembly rod is that the tooth teeth are inside the through groove. At this time, when the disassembly rod is rotated, the screw is not affected at all, and the magnetic block B is attached to the magnetic block A. When the device cuts the sheet, the disassembly rod is attracted by the suction cup and rotates together with the working shaft, and the phenomenon that the disassembly rod loosens during the sheet cutting and the blade is thrown out will not occur, ensuring the safety performance of the device and achieving the effect of anti-misoperation.

[0015] 2. For the blade replacement component of the sheet cutting machine, by setting structures such as a disassembly rod, a working shaft, and a disassembly rod, safe operation is realized. When the disassembly rod rotates to a certain angle, it drives the arc-shaped groove to slide a certain distance, so that the arc-shaped groove drives the connecting rod to completely push the sliding groove downward, and the top wall of the rectangular groove completely compresses the spring, and the slider is completely hidden inside the sliding groove. Then, the blade can be slid towards one end of the working shaft to disassemble the blade. When pressing towards the working shaft, the screw is restricted by the thread of the disc or the circular groove and will not rotate, while the driving rod will move into the through groove, so that the tooth teeth are disengaged from the tooth grooves, achieving the effect of protecting safety. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the connection structure between the working shaft and the blade of the present utility model;

[0018] Figure 3 is a sectional view of the connection structure between the working shaft and the blade of the present utility model;

[0019] Figure 4 is an exploded sectional view of the connection structure between the working shaft and the blade of the present utility model;

[0020] Figure 5 is a sectional view of the disassembly rod structure of the present utility model;

[0021] Figure 6 is Figure 3 the enlarged view at A in

[0022] In the figure: 1. Box body; 2. Motor; 3. Working shaft; 31. Snap ring; 32. Washer; 33. Functional cavity; 34. Circular groove; 35. Slide groove; 351. Slide block; 352. Rectangular groove; 353. Spring; 354. Fixed block; 36. Arc groove; 361. Disc; 37. Connecting rod; 4. Anti-slip sleeve; 5. Belt; 6. Blade; 7. Suction cup; 71. Bearing; 72. Magnet A; 8. Demounting rod; 81. Driving rod; 811. Teeth; 82. Screw; 821. Through groove; 822. Tooth groove; 83. Magnet B. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-4 , a blade replacement assembly for a sheet cutting machine, including a box body 1, a motor 2 is fixedly installed on the top of the box body 1, a working shaft 3 is rotatably installed inside the box body 1, anti-slip sleeves 4 are fixedly sleeved on the outer circles of one end of the working shaft 3 and the outer circle of the output shaft of the motor 2, a belt 5 is rotatably sleeved between the outer circles of the two anti-slip sleeves 4, a blade 6 is rotatably sleeved on the outer circle of the other end of the working shaft 3, a suction cup 7 is fixedly installed at the other end of the working shaft 3, and a demounting rod 8 is slidably sleeved on one side of the suction cup 7 inside the working shaft 3.

[0025] Please refer to Figures 1-4 , a snap ring 31 is fixedly sleeved on the outer circle of the working shaft 3 on one side of the blade 6 to limit the position of the blade 6 and prevent the blade 6 from displacing during work. A washer 32 is fixedly sleeved on the outer circle of the working shaft 3 between the snap ring 31 and the blade 6. The function of the washer 32 is to prevent friction and damage between the snap ring 31 and the blade 6 and to slow down the pressure between the snap ring 31 and the blade 6. A functional cavity 33 is opened inside the working shaft 3, a circular groove 34 is opened on the inner wall of the functional cavity 33 inside the working shaft 3, a threaded groove is opened inside the circular groove 34, and the demounting rod 8 is threadedly sleeved inside the functional cavity 33 and the circular groove 34. A slide groove 35 is uniformly opened in a circular ring shape on the outer circle of the working shaft 3 on the other side of the blade 6, and an arc groove 36 is opened between the inner wall of the functional cavity 33 and the slide groove 35 inside the working shaft 3.

[0026] Please refer to Figures 1-3 , a bearing 71 is fixedly sleeved on the inner circle of the suction cup 7, magnet A 72 is uniformly arranged in a circular ring shape on the side of the suction cup 7 away from the working shaft 3, and the demounting rod 8 is rotatably sleeved on the inner circle of the bearing 71.

[0027] Please refer to Figures 1-5 , on the side of the disassembly rod 8 close to the working shaft 3, a driving rod 81 is fixedly installed. A screw rod 82 is slidably sleeved on the outer circle of the driving rod 81. Threads are provided on the outer circle of the screw rod 82, and the threads on the outer circle of the screw rod 82 are adapted to the internal thread grooves in the circular groove 34. A through groove 821 is opened inside the screw rod 82, and a tooth groove 822 is opened on one side of the screw rod 82 inside the through groove 821. At the end of the driving rod 81 located inside the through groove 821, there is a tooth 811 with the same size as the tooth groove 822, and the tooth 811 is adapted to the tooth groove 822. On one side of the disassembly rod 8, magnetic blocks B83 are evenly arranged in a circular ring shape on the outer circle of the driving rod 81. The positions of the magnetic blocks B83 correspond to those of the magnetic blocks A72, and the magnetic blocks B83 and the magnetic blocks A72 attract each other with opposite magnetic poles.

[0028] Please refer to Figures 1-6 , at the bottom of the inner wall of the sliding groove 35, a fixing block 354 is provided. A slider 351 is slidably sleeved inside the sliding groove 35. A rectangular groove 352 is opened on the side of the slider 351 close to the fixing block 354, and the rectangular groove 352 is adapted to the size of the fixing block 354. A spring 353 is fixedly connected between the top of the fixing block 354 and the top wall of the rectangular groove 352.

[0029] Please refer to Figures 1-6 , on the inner wall of the arc groove 36, a disk 361 is slidably installed on the outer circle of the screw rod 82. Thread grooves are provided on the inner circle of the disk 361, and the thread grooves on the inner circle of the disk 361 are adapted to the threads on the outer circle of the screw rod 82. On the side of the disk 361 close to the disassembly rod 8, rotating blocks are evenly arranged in a circular ring shape. A connecting rod 37 is movably connected between the rotating block and the sliding groove 35. When the disassembly rod 8 rotates to drive the disk 361 to move towards the sliding groove 35, the sliding groove 35 is pushed downward by the thrust of the connecting rod 37. When the disassembly rod 8 rotates to a certain angle, it drives the arc groove 36 to slide a certain distance, so that the arc groove 36 drives the connecting rod 37 to completely push the sliding groove 35 downward, causing the top wall of the rectangular groove 352 to completely compress the spring 353, and the slider 351 is completely hidden inside the sliding groove 35. Then, the blade 6 can be slid towards one end of the working shaft 3 to disassemble the blade 6.

[0030] Please refer to Figures 1-5 , the original position of the disassembly rod 8 is that the tooth 811 is located inside the through groove 821. At this time, when the disassembly rod 8 is rotated, the screw rod 82 is not affected at all, and the magnetic block B83 is attached to the magnetic block A72, so that when the device cuts the plate, the disassembly rod 8 is attracted by the suction cup 7 and rotates together with the working shaft 3.

[0031] When disassembling and replacing the blade 6, after the blade 6 is disassembled, pressing it in the direction of the working shaft 3, the screw 82 is restricted by the threads of the disc 361 or the circular groove 34 and will not rotate. Instead, the driving rod 81 will move into the through groove 821, disengaging the tooth 811 from the tooth groove 822, thus achieving the effect of preventing accidental touch. At this time, if there is an accidental touch on the disassembly rod 8 during the process of replacing the blade 6, it will not cause any impact, making the replacement process of the blade 6 smooth and reducing the burden on the user to replace the blade 6.

[0032] Working principle: After the device is assembled, press the disassembly rod 8 in the direction of the working shaft 3, so that the magnet B 83 and the magnet A 72 attract each other with opposite polarities, and the tooth 811 is disengaged from the limit of the tooth groove 822, causing the tooth 811 to be located inside the through groove 821. After starting the motor 2, the output shaft of the motor 2 drives the working shaft 3 to rotate in a circle inside the box body 1 through the belt 5. The slider 351 and the washer 32 cooperate to make the blade 6 rotate with the working shaft 3, preventing the disassembly rod 8 from loosening during the cutting of the board and the phenomenon of the blade 6 being thrown out, thus ensuring the safety performance of the device.

[0033] When disassembling and replacing the blade 6, pull the disassembly rod 8 to make the magnet B 83 disengage from the attraction of the magnet A 72, so that the tooth 811 meshes with the tooth groove 822. Rotate the disassembly rod 8 to drive the disc 361 to move in the direction of the sliding groove 35. The sliding groove 35 is pushed downward by the thrust of the connecting rod 37. When the disassembly rod 8 rotates to a certain angle, drive the arc groove 36 to slide a certain distance, so that the arc groove 36 drives the connecting rod 37 to push the sliding groove 35 completely downward, completely compressing the spring 353 by the top wall of the rectangular groove 352, and the slider 351 is completely hidden inside the sliding groove 35. Then, the blade 6 can be slid towards one end of the working shaft 3 to disassemble the blade 6. Press it in the direction of the working shaft 3, the screw 82 is restricted by the threads of the disc 361 or the circular groove 34 and will not rotate. Instead, the driving rod 81 will move into the through groove 821, disengaging the tooth 811 from the tooth groove 822, thus achieving the effect of preventing accidental touch.

Claims

1. A blade replacement assembly for a plate cutting machine, comprising a housing (1), characterized in that: A motor (2) is fixedly mounted on the top of the box body (1), a working shaft (3) is rotatably mounted inside the box body (1), an outer ring at one end of the working shaft (3) and an outer ring of an output shaft of the motor (2) are both fixedly sleeved with an anti-slip sleeve (4), a belt (5) is rotatably sleeved between the outer rings of the two anti-slip sleeves (4), a blade (6) is rotatably sleeved on the outer ring at the other end of the working shaft (3), a suction cup (7) is fixedly mounted on the other end of the working shaft (3), and a disassembly rod (8) is slidably sleeved on one side of the suction cup (7) inside the working shaft (3).

2. The blade replacement assembly for a plate cutting machine according to claim 1, characterized in that: The outer ring of the working shaft (3) is located on one side of the blade (6) and is fixedly sleeved with a retaining ring (31); the outer ring of the working shaft (3) is located between the retaining ring (31) and the blade (6) and is fixedly sleeved with a gasket (32); a functional cavity (33) is provided inside the working shaft (3); a circular groove (34) is provided on the inner wall of the functional cavity (33); a threaded groove is provided inside the circular groove (34); the disassembly rod (8) is threadedly sleeved inside the functional cavity (33) and the circular groove (34); the outer ring of the working shaft (3) is located on the other side of the blade (6) and is evenly sleeved with sliding grooves (35) in a circular shape; an arc groove (36) is provided inside the working shaft (3) between the inner wall of the functional cavity (33) and the sliding groove (35).

3. The blade replacement assembly for a plate cutting machine according to claim 2, characterized in that: The inner ring of the suction cup (7) is fixedly sleeved with a bearing (71), and a side of the suction cup (7) away from the working shaft (3) is evenly provided with magnetic blocks A (72) in a circular shape, and the disassembly rod (8) is rotatably sleeved on the inner ring of the bearing (71).

4. The blade replacement assembly for a plate cutting machine according to claim 3, characterized in that: A driving rod (81) is fixedly mounted on one side of the disassembly rod (8) close to the working shaft (3); a screw rod (82) is slidably sleeved on the outer ring of the driving rod (81); a thread is provided on the outer ring of the screw rod (82); the thread on the outer ring of the screw rod (82) is matched with the thread groove on the inner ring of the circular groove (34); a through groove (821) is provided inside the screw rod (82); a tooth groove (822) is provided inside the screw rod (82) on one side of the through groove (821); The end of the driving rod (81) is located inside the through groove (821) and is provided with teeth (811) of the same size as the tooth groove (822), and the teeth (811) are adapted to the tooth groove (822). One side of the disassembly rod (8) is located outside the driving rod (81) and is evenly provided with magnetic blocks B (83) in a circular shape. The positions of the magnetic blocks B (83) and the magnetic blocks A (72) correspond to each other, and the magnetic blocks B (83) and the magnetic blocks A (72) attract each other due to their opposite magnetic poles.

5. The blade replacement assembly for a plate cutting machine according to claim 4, characterized in that: A fixed block (354) is provided at the bottom of the inner wall of the slide groove (35), a slider (351) is slidably sleeved inside the slide groove (35), a rectangular groove (352) is provided on a side of the slider (351) close to the fixed block (354), the rectangular groove (352) is adapted to the size of the fixed block (354), and a spring (353) is fixedly connected between the top of the fixed block (354) and the top wall of the rectangular groove (352).

6. The blade replacement assembly for a plate cutting machine according to claim 5, characterized in that: The inner wall of the arc groove (36) is slidably mounted with a disc (361) on the outer ring of the screw rod (82); the inner ring of the disc (361) is provided with a thread groove, and the thread groove of the inner ring of the disc (361) is adapted to the thread of the outer ring of the screw rod (82); a rotating block is evenly arranged in an annular shape on one side of the disc (361) close to the disassembly rod (8); a connecting rod (37) is movably connected between the rotating block and the slide groove (35).

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