Multi-purpose grinding device for automatic cutting machine cutter

Abstract

The application belongs to the field of automatic machinery and textile automatic cutting bed, and particularly relates to a multi-purpose polishing device for a cutting knife of an automatic cutting bed. The hollow tube type grinding wheel structure is internally driven by a motor arranged in the tube body, and is non-belt type and starts and stops immediately, has high polishing quality, and is integrated and suitable for relatively high compression space product structure. The elastic buffer structure of the polishing device is a combination of a cylinder and a pneumatic and air spring. The polishing device comprises a push-pull device, a buffer device, a suspension frame and a polishing device. The push-pull device comprises a push-pull cylinder and a push-pull integrated block. The buffer device is arranged on the back of the suspension frame and the front of the push-pull integrated block. The polishing device is arranged on the suspension frame and comprises a polishing tube, an inner core motor, a plurality of grinding wheels arranged on the polishing tube, and an inner core motor inserted into the hollow cavity of the polishing tube. The inner core motor directly drives the polishing tube to rotate, and the rotating polishing tube uses the grinding wheels on the outer wall to perform polishing work.

Description

Technical Field

[0001] This invention relates to the fields of automated machinery and automatic textile cutting beds, specifically to a multi-purpose grinding device for automatic cutting bed blades. Background Technology

[0002] Modern large-scale garment manufacturing in leather tanning, papermaking, clothing, and textile industries utilizes automated cutting machines, also known as computer numerical control (CNC) cutting machines. These machines typically use cutting blades to cut various garment materials. After repeated use, these blades become very dull and accumulate oil, fibers, and other contaminants. Therefore, for sharpening and maintenance, CNC cutting machines are equipped with sharpening mechanisms to polish the blades. For example, patent number CN201620423560.2 discloses a novel sharpening device for computer cutting machines. Grinding wheel A is mounted on one side of a sharpening plate via a grinding wheel fixing shaft A, and grinding wheel B is mounted on the same side of the sharpening plate via a grinding wheel fixing shaft B. Grinding wheels A and B are located on the same side of the sharpening motor, and their axes are parallel to each other. A sharpening spring is fitted on the outer circle of the guide shaft, and both ends of the guide shaft are connected to a connecting frame. The grinding rod is mounted on the guide shaft and can slide along the guide shaft. One end of the grinding spring abuts against the grinding rod, and the other end abuts against the inner side of the connecting frame. The connecting frame is fixedly mounted on the slider of the linear guide rail. O-ring A connects the outer surface of grinding wheel A and the outer surface of the grinding wheel drive wheel, and O-ring B connects the outer surface of grinding wheel B and the outer surface of the grinding wheel drive wheel. The new grinding device for computerized cutting machines uses elastic elements to press the grinding wheel firmly against both sides of the cutting blade. The high-speed rotating grinding wheel grinds the cutting blade, resulting in good blade shaping and fast grinding. It employs cylinder control for a high degree of automation, allowing for multiple grinding cycles of the cutting blade, further reducing costs. Existing grinding structures generally use belt-driven motors to drive the grinding wheel, which has low controllability and cannot be started and stopped instantly. Starting the machine requires a certain acceleration time to reach a stable grinding speed, and stopping also requires a certain deceleration time to gradually reduce the grinding speed. This acceleration and deceleration results in poor grinding stability. Secondly, the physical spring structure used for buffering is insufficient for small, delicate parts like cutting blades; excessive contact can easily lead to over-grinding or incomplete grinding, and adjusting the spring to the appropriate elasticity is also very difficult. Therefore, a new grinding wheel structure is needed, allowing for instant start-stop and a refined, buffered grinding device. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides an automatic cutting bed cutting knife multi-purpose grinding device, which adopts a hollow tubular grinding wheel structure and a motor is set inside the tube for internal drive. It is a non-belt type that can be started and stopped instantly, resulting in high grinding quality. It integrates a product structure suitable for high compression space use. The elastic buffer structure of the grinding device adopts a combination of cylinder, pneumatic and air spring.

[0004] This invention is achieved through the following: an automatic cutting bed multi-purpose grinding device for cutting blades, comprising a push-pull device, a buffer device, a suspension frame, and a grinding device, wherein: the push-pull device includes a push-pull cylinder and a push-pull integrated block, the telescopic rod of the push-pull cylinder is inserted into the push-pull integrated block to push forward or pull backward; the buffer device includes a pneumatic spring and an air spring, the buffer device being disposed on the back of the suspension frame and the front of the push-pull integrated block; the grinding device is disposed on the suspension frame and includes a grinding tube and an inner core motor, the grinding tube being provided with several grinding wheels, the inner core motor being inserted into the hollow cavity of the grinding tube, the inner core motor directly driving the grinding tube to rotate, and the rotating grinding tube using the grinding wheels on its outer wall to perform grinding operations.

[0005] Preferably, a turbine blade holder is provided on the top of the inner core motor, and a top connecting bearing is connected to the top of the turbine blade holder. Because the inner core motor is located inside the hollow cavity of the grinding tube, the heat dissipation conditions are poor. The turbine blades of the turbine blade holder are used to dissipate heat from the inner core motor, and can also provide some heat dissipation from the grinding tube.

[0006] Preferably, the suspension bracket is equipped with a rotating fixed seat, and a top connecting bearing is located below the rotating fixed seat. A turbine blade holder is located on top of the inner core motor, and the turbine blade holder is connected to the top connecting bearing of the rotating fixed seat. This arrangement provides greater stability for both the rotation of the grinding tube driven by the inner core motor and the rotation of the turbine blade holder compared to a single bottom fixed connection, thus improving the grinding effect.

[0007] Preferably, an atomizer is provided between the rotating fixed seat and the top connecting bearing, and a windproof connecting plate is also provided at the bottom of the suspension frame, with the rotating fixed seat connected to the windproof connecting plate. Preferably, two grinding tubes are provided, symmetrically, and the grinding wheels on the outer walls of the two tubes are arranged in an alternating, overlapping manner.

[0008] Preferably, the atomizer is equipped with a separate spray hole, with the spray direction corresponding to the middle position of the two grinding tubes. The middle position of the grinding tubes is exactly where the cutting knife is located during grinding, and the water mist sprayed from the spray hole can ensure a stable temperature during grinding, thereby increasing the grinding effect.

[0009] Preferably, one sensor is installed on each of the left and right sides of the suspension bracket. The sensors are used to collect distance information, vibration information, and humidity information and feed them back to the main control computer. The distance information is used to analyze the distance and position of the cutting blade and the grinding device, the vibration information is used to analyze the stability during grinding, and the humidity information is used to analyze the working status of the atomizing device.

[0010] Preferably, a cleaner is provided on each of the left and right sides of the suspension bracket, and the cleaner is equipped with a nozzle. The nozzle of the cleaner can spray gas, such as hot air or ordinary compressed air, to dry the cutting knife and the grinding device. The extension length of the cleaner is longer than that of the grinding device, which can prevent the entire grinding device from moving forward too much and bending and damaging the cutting knife or other front devices.

[0011] Preferably, the head end of the cleaner is provided with a cushioning pad. If the grinding device moves forward too far, the cushioning pad may be damaged.

[0012] Preferably, a buffer plate is also attached to the back of the suspension bracket, and the buffer plate can be made of rubber.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The grinding device uses an internal motor rotation and an outer wall grinding wheel structure for efficient grinding of cutting tools, resulting in good grinding effect. It can stop and start immediately, and requires little installation space without belt control; 2. The elastic buffer structure of the grinding device adopts a combination of cylinder push-pull control and pneumatic and air spring buffer structure. The force from the suspension side and the force from the push-pull device side are buffered between the buffer device and the push-pull integrated block, resulting in very little vibration and high stability during grinding; 3. The inner core motor is located inside the hollow cavity of the grinding tube, where heat dissipation is poor. The turbine blades of the turbine blade holder are used to dissipate heat from the inner core motor and also to dissipate some heat from the grinding tube. 4. The water mist sprayed from the spray nozzle ensures stable temperature during polishing, increasing the polishing effect; it has a final overall cleaning structure, and the cleaner's nozzle can spray gas, such as hot air or ordinary compressed air, to dry the cutting knife and polishing device. The extension length of the cleaner is longer than that of the polishing device, which can prevent the entire polishing device from moving forward too much and bending and damaging the cutting knife or other front devices. Attached Figure Description

[0014] Figure 1 This is the overall main view;

[0015] Figure 2 Overall side view;

[0016] Figure 3 This is a complete 3D view;

[0017] Figure 4 This is an exploded view of the overall structure;

[0018] Figure 5 This is an exploded 3D view of the overall structure;

[0019] Figure 6 Diagram showing the setup and operating principles for cutting tool sharpening;

[0020] Figure 7 Side view of the cutting blade being polished for overall operation;

[0021] In the diagram: 1. Push-pull device; 2. Buffer device; 3. Suspension frame; 4. Grinding device; 5. Push-pull cylinder; 6. Push-pull integrated block; 7. Pneumatic spring; 8. Air spring; 24. Buffer plate; 9. Grinding tube; 10. Inner core motor; 11. Grinding wheel; 12. Turbine blade holder; 13. Hollow tube cavity; 14. Rotary fixed seat; 15. Top connecting bearing; 16. Atomizer; 17. Windproof connecting plate; 18. Spray hole; 19. Sensor; 20. Cleaner; 21. Nozzle; 22. Buffer pad; 23. Telescopic rod; 24. Buffer plate; 25. Cutting knife push plate; 26. Cutting knife. Detailed Implementation

[0022] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0023] Example 1, such as Figure 1 , 2 As shown in Figure 3, an automatic cutting bed multi-purpose grinding device for cutting blades includes a push-pull device 1, a buffer device 2, a suspension frame 3, and a grinding device 4. The push-pull device 1 includes 1-2 push-pull cylinders 5 and a push-pull integrated block 6 for fixing and setting auxiliary control electronic devices. The telescopic rod 23 of the push-pull cylinder 5 is inserted into the push-pull integrated block 6 and pushed forward or pulled backward. After the telescopic rod 23 continues to extend forward, it will be connected to the suspension frame 3. The push-pull of the push-pull cylinder 5 will push the suspension frame 3 forward closer to the cutting blade or pull it backward away from the cutting blade.

[0024] There are two basic problems to solve when sharpening cutting tools. One is the vibration problem generated during sharpening, which will affect the suspension frame 3 and multiple devices connected to the suspension frame 3. Furthermore, the vibration problem will affect the sharpening of the cutting tools. Therefore, it is necessary to control the vibration within an ideal range, and a buffer device is needed to control the vibration.

[0025] The buffer device 2 created by this invention, such as Figure 2As shown, it includes a pneumatic spring 7 and an air spring 8. The buffer device 2 is set on the back of the suspension frame 3 and the front of the push-pull integrated block 6. The air spring 8 is set on the back of the suspension frame 3 with its head facing the push-pull integrated block 6. The air spring is set on the front of the push-pull integrated block 6 with its head facing the suspension frame 3. The force from the side of the suspension frame 3 and the force from the side of the push-pull device 1 will be buffered between the suspension frame 3 and the push-pull integrated block 6, and the vibration action from the suspension frame 3 will also be reduced here. Furthermore, in addition to this, a buffer plate 24 is also attached to the back of the suspension frame 3. The buffer plate 24 can be made of rubber, which can maximize the reduction of the impact of the vibration action during grinding on the buffer device.

[0026] The present invention differs from the prior art in that, as follows: Figure 1 , 3 As shown, the grinding device 4 is mounted on the suspension frame 3 and includes a grinding tube 9 and an inner core motor 10. Several grinding wheels 11 are mounted on the grinding tube 9. The inner core motor 10 is inserted inside the hollow cavity 13 of the grinding tube 9. The inner core motor 10 directly drives the grinding tube 9 to rotate from inside the tube, instead of using an external motor and belt to drive the grinding tube 9. There is no indirect action. The motor can be a brushless motor with directly programmable speed control. The rotating grinding tube 9 uses the grinding wheels 11 on its outer wall to perform the grinding operation on the cutting blade. The inner core motor can be started and stopped instantly, with significantly fewer deceleration and acceleration actions compared to belt drives. This allows for stable operation of the cutting blade during finishing and starting states, without leaving unstable grinding marks due to friction.

[0027] In Example 2, when the present invention is used for grinding and cutting, the inner motor is located inside the hollow cavity of the grinding tube. The disadvantage is poor heat dissipation. However, as... Figure 4 and 5 As shown, a turbine blade holder 12 is provided on the top of the inner core motor 10, and a top connecting bearing 15 is connected to the top of the turbine blade holder 12. Because the inner core motor is located inside the hollow cavity 13 of the grinding tube 9, the heat dissipation conditions are poor. The turbine blades of the turbine blade holder 12 are used to dissipate heat from the inner core motor, and can also provide some heat dissipation from the grinding tube 9.

[0028] Example 3: Furthermore, during the grinding of the cutting blade, dust and impurities are generated by the grinding wheel, and sparks are also produced between the metal cutting blade and the grinding wheel. Automatic cutting machines are essentially highly electronically integrated products, and the objects they produce are highly flammable; therefore, dust and fire suppression are necessary. Figure 4 , 5As shown, the suspension frame 3 is equipped with a rotating fixed seat 14, and a top connecting bearing 15 is located below the rotating fixed seat 14. A turbine blade holder 12 is located on top of the inner core motor 10, and the turbine blade holder 12 is connected to the top connecting bearing 15 of the rotating fixed seat 14. This arrangement provides greater stability for both the rotation of the grinding tube 9 driven by the inner core motor 10 and the rotation of the turbine blade holder 12 compared to a single bottom fixed connection, thus improving the grinding effect. An atomizer 16 is located between the rotating fixed seat 14 and the top connecting bearing 15, and a windproof connecting plate 17 is also located at the bottom of the suspension frame, with the rotating fixed seat 14 connected to the windproof connecting plate 17. In addition to performing the function of stably connecting the entire grinding device 4 to the suspension frame 3, the air generated by the turbine blades of the turbine blade holder 12 flows out from the grinding tube 9, reaches the windproof connecting plate 17, and is blocked by the windproof connecting plate 17 before being turned downwards, thus dispersing the water mist generated by the atomizer 16 throughout the entire grinding device using airflow. The atomizer 16 is equipped with a separate spray hole 18, which corresponds to the spray direction at the middle position of the two grinding tubes 9. The middle position of the grinding tubes 9 is exactly where the cutting knife is located when it is grinding. The water mist sprayed from the spray hole can ensure that the temperature is stable during grinding and increase the grinding effect.

[0029] In Example 3, as shown in Figures 3 and 5, a cleaner 20 is installed on the left and right sides of the suspension frame 3, and each cleaner 20 is equipped with a nozzle 21. The pipe structure behind the nozzle 21 of the cleaner is connected to an air pump and a compressed air machine, which can output high-velocity jet gas or hot air to dry the cutting knife and the grinding device. The extension length of the cleaner is longer than that of the grinding device, which can prevent the entire grinding device from moving forward too much and bending and damaging the cutting knife or other front devices.

[0030] Preferably, two grinding tubes 9 are provided, which are symmetrical, and the grinding wheels 11 on the outer wall of the two tubes are stacked and staggered.

[0031] Preferably, a sensor 19 is installed on each of the left and right sides of the suspension bracket 3. The sensors are used to collect distance information, vibration information, and humidity information and feed them back to the main control computer. The distance information is used to analyze the distance and position of the cutting blade and the grinding device, the vibration information is used to analyze the stability during grinding, and the humidity information is used to analyze the working status of the atomizing device.

[0032] The working method of this invention is as follows: Figure 6 , 7After the cutting head module with the cutting blade is installed enters the sharpening module, the cutting blade is fixed in position by the cutting blade push plate 25. The push-pull cylinder 5 of the push-pull device 1 is energized to operate the telescopic rod 23. The telescopic rod 23 pushes the suspension frame 3 forward, and the suspension frame 3 brings its own sharpening device 4 closer to the cutting blade 26. The cutting blade 26 enters the position between the two sharpening tubes 9. The inner core motor 10 inside the sharpening tube 9 is energized and starts, rotating the entire sharpening tube 9 at high speed. The grinding wheel 11 on the sharpening tube 9 sharpens the cutting edge of the cutting blade 26. At the same time, the water mist generated by the atomizer 16 is used for grinding. The flow is distributed throughout the grinding device to suppress sparks and dust; at the same time, after the sensor 19 collects data, it adjusts the pneumatic spring 7 and air spring 8 according to the vibration amplitude to buffer the vibration amplitude; after the entire grinding process of the cutting knife is completed, the nozzle 21 of the cleaner sprays high-velocity gas to dry the cutting knife and grinding device. After completion, the push-pull cylinder 5 is energized to retract the telescopic rod 23, pull the suspension frame 3 back to its original position, and the grinding tube 9 and other grinding devices 4 are removed from the cutting knife 26. The cutting knife push plate 25 releases the cutting knife 26 from the fixation, and the cutting head module leaves the device.

[0033] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An automatic cutting bed multi-purpose grinding device for cutting blades, comprising a push-pull device (1), a buffer device (2), a suspension frame (3), and a grinding device (4), characterized in that: The push-pull device (1) includes a push-pull cylinder (5) and a push-pull integrated block (6). The telescopic rod of the push-pull cylinder (5) is inserted into the push-pull integrated block (6) to push forward or pull backward. The buffer device (2) is set on the back of the suspension frame (3) and the front of the push-pull integrated block (6). The grinding device (4) is set on the suspension frame (3) and includes a grinding tube (9) and an inner core motor (10). Several grinding wheels (11) are set on the grinding tube (9). The inner core motor (10) is inserted into the hollow tube cavity (13) of the grinding tube (9). The inner core motor (10) directly drives the grinding tube (9) to rotate. The rotating grinding tube (9) utilizes the outer wall of the inner core motor (10) to rotate. A grinding wheel (11) is used for grinding operations; the buffer device (2) includes a pneumatic spring (7) and an air spring (8); the suspension frame (3) is provided with a rotating fixed seat (14), a top connecting bearing (15) is provided below the rotating fixed seat (14), a turbine blade frame (12) is provided on the top of the inner core motor (10), and the turbine blade frame (12) is connected to the top connecting bearing (15) of the rotating fixed seat (14); an atomizer (16) is provided between the rotating fixed seat (14) and the top connecting bearing (15), and a windproof connecting plate (17) is also provided at the bottom of the suspension frame, and the rotating fixed seat (14) is connected to the windproof connecting plate (17).

2. The automatic cutting bed multi-purpose grinding device according to claim 1, characterized in that: The turbine blade holder (12) is connected to the top connecting bearing (15).

3. The multi-purpose grinding device for automatic cutting bed blades according to claim 1, characterized in that: Two grinding tubes (9) are provided, which are symmetrical, and the grinding wheels (11) on the outer walls of the two are stacked and staggered.

4. The multi-purpose grinding device for automatic cutting bed blades according to claim 1, characterized in that: The atomizer (16) is provided with a separate spray hole (18), and the spray hole (18) corresponds to the middle position of the two polishing tubes (9) in the spray direction.

5. The multi-purpose grinding device for automatic cutting bed blades according to claim 1, characterized in that: A sensor (19) is provided on the left and right sides of the suspension frame (3), and a cleaner (20) is also provided on the left and right sides of the suspension frame (3), with a nozzle (21) provided on the cleaner (20).

6. The multi-purpose grinding device for automatic cutting bed blades according to claim 5, characterized in that: The head end of the cleaner (20) is provided with a buffer pad (22).

7. The automatic cutting bed multi-purpose grinding device according to claim 1 or 5, characterized in that: A buffer plate (24) is also attached to the back of the suspension frame (3), and the buffer plate (24) is made of rubber.

Images