Circular knife die-cutting machine with buffering function

Abstract

The utility model provides a circular knife die-cutting machine with a buffering function, and relates to the technical field of circular knife die-cutting machines, the circular knife die-cutting machine comprises a feeding platform, a material belt buffering device, an adjustable deviation rectifying corona device, a die-cutting device and a conveying device which are arranged in sequence, the material belt buffering device comprises a fixed roller set and a sliding roller set, the fixed roller set comprises a plurality of fixed guide rollers, and the sliding roller set comprises a plurality of sliding guide rollers. The sliding roller set comprises a lifting seat, a lifting driving mechanism and a plurality of sliding guide rollers, a material belt bypasses each fixed guide roller and each sliding guide roller at intervals, the adjusting type deviation rectifying corona device comprises a deviation rectifying assembly and a corona assembly, the deviation rectifying assembly is connected with a sliding adjusting mechanism, the corona assembly is connected with a drawing adjusting mechanism, and the drawing adjusting mechanism is connected with the lifting seat. According to the circular knife die-cutting machine, non-stop material changing of the circular knife die-cutting machine is achieved through the arrangement of the material belt temporary storage device, meanwhile, the deviation rectifying effect on the material belt is improved, and the yield of products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of circular knife die cutting machines, in particular to a circular knife die cutting machine with a buffer function. Background Art

[0002] The circular knife die-cutting machine is a die-cutting device mainly used to process various materials such as printed materials, plastics, metals, etc. into products of various shapes. It is mainly composed of a machine base, a pressure system, a cutting system, a transmission system, a positioning system, and an electronic control system. The working principle of the circular knife die-cutting machine is: the material to be processed (hereinafter referred to as the material strip) passes through the feeding platform and enters the knife base for lamination, cutting, etc. After the finished product is processed, it will pass through the discharging platform and enter the conveyor for transportation away.

[0003] The existing circular knife die-cutting machines mainly have the following problems: First, when each roll of material is unwound, the circular knife die-cutting machine needs to be stopped and the material needs to be replaced, which slows down the efficiency of production and processing; second, the material tape is inevitably offset during the conveying process, and errors are likely to occur during the lamination, cutting and other processes, resulting in an increase in the defective rate of the finished product.

[0004] Therefore, a circular knife die cutting machine with a buffering function that can solve the above problems is needed. Utility Model Content

[0005] The utility model provides a circular knife die cutting machine with a buffer function, which realizes non-stop material replacement of the circular knife die cutting machine by arranging a material belt buffer device, and improves the deviation correction effect of the material belt, thereby ensuring the yield rate of the product.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A circular knife die-cutting machine with a buffering function comprises a machine base, on which a feeding platform, a material buffering device, an adjustable deviation-correcting corona device, a die-cutting device and a conveying device are sequentially arranged along the forward direction of the material strip;

[0008] The material strip buffer device comprises a fixed roller group and a sliding roller group arranged in an upper and lower position, the fixed roller group comprises a plurality of fixed guide rollers arranged in sequence along the X-axis direction, each of the fixed guide rollers is rotatably mounted on the machine base, the sliding roller group comprises a lifting seat, the lifting seat is slidably mounted on the machine base along the Z-axis direction, the lifting seat is connected to a lifting drive mechanism, a plurality of sliding guide rollers arranged in sequence along the X-axis direction are rotatably mounted on the lifting seat, each of the sliding guide rollers and the fixed guide rollers are extended in the Y-axis direction, and the material strip passes around each of the fixed guide rollers and the sliding guide rollers at intervals;

[0009] The adjustable deflection correction corona device comprises a deflection correction assembly and a corona assembly, the deflection correction assembly is slidably mounted on the machine base along the X-axis direction, a sliding adjustment mechanism is arranged between the deflection correction assembly and the machine base, the corona assembly is slidably mounted on the machine base along the Y-axis direction, and a pulling adjustment mechanism is arranged between the corona assembly and the machine base;

[0010] The die-cutting device comprises a plurality of knife seats arranged in sequence along the X-axis direction;

[0011] The conveying device comprises a flat plate conveyor.

[0012] As a preferred technical solution, a traction mechanism is provided both upstream and downstream of the material strip buffer device.

[0013] As a preferred technical solution, each of the traction mechanisms includes a friction roller rotatably mounted on the machine base, each of the friction rollers extends along the Y-axis direction, each of the friction rollers is transmission-connected to a first servo motor, a first fixed frame is provided above each of the friction rollers, a pair of bearing seats are slidably mounted on the first fixed frame along the radial direction of the friction roller, and a pressing roller is rotatably mounted on each pair of the bearing seats.

[0014] As a preferred technical solution, a pair of adjusting screws are threadedly mounted on each of the first fixing frames, the positions of the adjusting screws correspond one-to-one to the positions of the bearing seats, and each of the adjusting screws is fixedly connected to the corresponding bearing seat.

[0015] As a preferred technical solution, the pull-out adjustment mechanism includes a fixed bottom plate and a sliding bottom plate slidably installed together, a vertical plate is fixed on the machine base, the vertical plate is extended along the Z-axis direction, the fixed bottom plate is fixed on the rear wall of the vertical plate, the sliding bottom plate slides along the Y-axis direction, an opening is penetrated on the vertical plate, the front end of the sliding bottom plate extends to the front side of the vertical plate through the opening, the corona assembly is fixed on the sliding bottom plate, a pair of limit pins are plugged and installed on the sliding bottom plate, the limit pins are used to limit the sliding bottom plate, and each of the limit pins is against the front wall of the vertical plate.

[0016] As a preferred technical solution, a locking pin is rotatably mounted on the front end of the fixed bottom plate, a fixing block is fixed on the vertical plate, and a locking hole matching the locking pin is provided on the fixing block.

[0017] As a preferred technical solution, the sliding adjustment mechanism includes an X-axis slide plate slidably installed on the vertical plate along the X-axis direction, the correction assembly is fixed on the X-axis slide plate, a locking screw is installed on the X-axis slide plate in a threaded manner, and the vertical plate is provided with a plurality of positioning holes arranged in sequence along the X-axis direction, the positions of the positioning holes correspond to the positions of the locking screws, and the locking screws are inserted into the corresponding positioning holes.

[0018] As a preferred technical solution, the lifting drive mechanism includes a second servo motor fixedly mounted on the machine base, a synchronous pulley is fixedly mounted on the motor shaft of the second servo motor, a toothed idler wheel is arranged directly above the synchronous pulley, a synchronous toothed belt is wound around the synchronous pulley and the toothed idler wheel, and the lifting seat is fixedly mounted on the synchronous toothed belt.

[0019] As a preferred technical solution, a slide groove extending along the Z-axis direction is provided on the machine base, and the lifting seat is fixedly connected to the synchronous toothed belt through the slide groove.

[0020] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0021] Since the circular knife die-cutting machine with a caching function includes a feeding platform, a material strip caching device, an adjustable deflection-correcting corona device, a die-cutting device and a conveying device, in the utility model, the material strip passes through the feeding platform, the material strip caching device, the adjustable deflection-correcting corona device, the die-cutting device and the conveying device in sequence, and when the material strip roll is unwound, the material strip caching device smoothly releases the cached material strip at a predetermined unwinding speed to maintain the normal operation of the subsequent adjustable deflection-correcting corona device, the die-cutting device and the conveying device, without stopping the circular knife die-cutting machine, and before the material strip temporarily stored in the material strip caching device is completely released , the staff can replace the new material tape roll, ensuring the continuous operation of the circular knife die-cutting machine, thereby realizing the non-stop material change of the circular knife die-cutting machine, avoiding the situation where the production progress is slowed down due to shutdown for material change, and thus improving the production efficiency of the circular knife die-cutting machine; and the material tape buffer device is directly arranged on the circular knife die-cutting machine, and there is no need to set up an additional frame to install the material tape roll unwinding roller and the material tape buffer device, which ensures the compactness of the various devices of the circular knife die-cutting machine, shortens the transmission length of the material tape, and avoids the situation where the position deviation is too large due to the excessive transmission length of the material tape.

[0022] Since the adjustable deflection correction corona device includes a deflection correction assembly, a sliding adjustment mechanism, a corona assembly and a pull-out adjustment mechanism, in the utility model, the arrangement of the material strip buffer device makes the distance between the material strip roll and the die-cutting device very far, and the material strip will inevitably deviate during the transmission process, so a deflection correction assembly is required to correct the position of the material strip. The position of the deflection correction assembly in the utility model can be adjusted by the sliding adjustment mechanism, and the position of the deflection correction assembly can be adjusted according to whether the material strip needs to be subjected to corona treatment. When the material strip needs to be subjected to corona treatment, The pull-out adjustment mechanism fixes the corona assembly on the corona station. At this time, the correction assembly is located on the left correction station, ensuring the smooth progress of the corona treatment. On the contrary, when the material strip does not need to be corona treated, the pull-out adjustment mechanism fixes the corona assembly on the idle station on the rear side of the machine base, and then uses the sliding adjustment mechanism to slide the correction assembly to the right correction station, so that the correction assembly is as close to the die-cutting device as possible, thereby improving the correction effect of the correction assembly on the material strip, ensuring the processing accuracy of the material strip in the subsequent die-cutting device, and then ensuring the yield rate of the product.

[0023] Since a traction mechanism is provided upstream and downstream of the material strip buffer device, in the utility model, the fixed guide roller and the sliding guide roller in the material strip buffer device have no power, and the setting of the traction mechanism ensures that the material strip is continuously pulled forward, and the two traction mechanisms are asynchronous, and can control the speed at which the material strip enters and leaves the material strip buffer device according to actual production needs, thereby ensuring the normal operation of the subsequent die-cutting device during the material change process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the material belt buffer device in the utility model;

[0027] Figure 3 for Figure 2 A schematic diagram of the main view;

[0028] Figure 4 for Figure 3 A rear view schematic diagram of

[0029] Figure 5 for Figure 4Schematic cross-sectional view along the AA direction;

[0030] Figure 6 It is a structural schematic diagram of the adjustable deviation-correcting corona device in the utility model;

[0031] Figure 7 for Figure 6 A schematic diagram of the main view;

[0032] Figure 8 for Figure 7 A cross-sectional schematic diagram along the BB direction;

[0033] Fig. 9 for Figure 7 Schematic cross-sectional view along CC direction;

[0034] Fig.10 It is a structural schematic diagram of the traction mechanism in the utility model.

[0035] Among them: 1. Machine base; 2. Feeding platform; 3. Material strip winding and unwinding roller; 4. Fixed guide roller; 5. Lifting seat; 6. Sliding guide roller; 7. Correction assembly; 8. Corona assembly; 9. Knife seat; 10. Flat conveyor; 11. Friction roller; 12. First servo motor; 13. First fixed frame; 14. Bearing seat; 15. Pressing roller; 16. Adjusting screw; 17. Fixed bottom plate; 18. Sliding bottom plate; 19. Vertical plate; 20. Opening; 21. Limit pin rod; 22. Locking pin; 23. Fixed block; 24. Locking hole; 25. X-axis slide plate; 26. Locking screw; 27. Positioning hole; 28. Second servo motor; 29. ​​Synchronous pulley; 30. Toothed idler wheel; 31. Synchronous toothed belt; 32. Slide groove. DETAILED DESCRIPTION

[0036] 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 of 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.

[0037] like Figure 1-Figure 10 As shown together, the circular knife die-cutting machine with a caching function includes a machine base 1. Along the forward direction of the material belt, a feeding platform 2, a material belt caching device, an adjustable deviation correction corona device, a die-cutting device and a conveying device are sequentially arranged on the machine base 1. In this embodiment, the structure of the feeding platform 2 is the prior art and is well known to ordinary technicians in this field, and will not be repeated here.

[0038] In the utility model, a material tape unwinding roller 3 for unwinding the material tape roll is provided upstream of the feed platform 2; a correction assembly 7 is provided downstream of the feed platform 2, and a position correction is performed before the material tape enters the material tape caching device, thereby avoiding excessive position deviation of the material tape during the caching process.

[0039] like Figure 1-Figure 5 As shown together, the material strip caching device includes a fixed roller group and a sliding roller group arranged in an upper and lower manner, the fixed roller group includes a plurality of fixed guide rollers 4 arranged in sequence along the X-axis direction, each of the fixed guide rollers 4 is rotatably installed on the machine base 1, the sliding roller group includes a lifting seat 5, the lifting seat 5 is slidably installed on the machine base 1 along the Z-axis direction, the lifting seat 5 is connected to a lifting drive mechanism, and a plurality of sliding guide rollers 6 arranged in sequence along the X-axis direction are rotatably installed on the lifting seat 5, each of the sliding guide rollers 6 and the fixed guide roller 4 is extended along the Y-axis direction, and the material strip bypasses each of the fixed guide rollers 4 and the sliding guide rollers 6 at intervals. In this embodiment, the material strip caching device is directly arranged on the machine base 1 of the circular knife die-cutting machine, and there is no need to set up a frame to install the material strip winding and unwinding roller 3 and the material strip caching device, thereby effectively shortening the transmission length of the material strip, improving the compactness between the various devices of the circular knife die-cutting machine, and thus avoiding the situation where the material strip transmission distance is too long, resulting in excessive offset and cannot be completely corrected.

[0040] In the present invention, the fixed guide rollers 4 and the sliding guide rollers 6 are arranged alternately, and the material belt passes around each fixed guide roller 4 and the sliding guide roller 6 in turn. The staff adjusts the buffer amount of the material belt by adjusting the distance between the fixed roller group and the sliding roller group. When the buffer amount needs to be increased, the lifting drive mechanism controls the lifting seat 5 to move in the direction away from the fixed roller group, so that the distance between the sliding roller group and the fixed roller group is increased, thereby increasing the length of the material belt wound on the sliding roller group and the fixed roller group; conversely, when the material belt needs to be released, the lifting drive mechanism controls the lifting seat 5 to move in the direction close to the fixed roller group according to a predetermined production speed, so that the distance between the sliding roller group and the fixed roller group is reduced, so that the material belt wound on the sliding roller group and the fixed roller group is continuously released.

[0041] like Figure 6-Figure 9 As shown together, the adjustable deflection correction corona device includes a deflection correction assembly 7 and a corona assembly 8. The deflection correction assembly 7 is slidably installed on the machine base 1 along the X-axis direction, and a sliding adjustment mechanism is arranged between the deflection correction assembly 7 and the machine base 1. The corona assembly 8 is slidably installed on the machine base 1 along the Y-axis direction, and a pulling adjustment mechanism is arranged between the corona assembly 8 and the machine base 1. In this embodiment, the structures of the deflection correction assembly 7 and the corona assembly 8 are prior arts and are well known to ordinary technicians in this field, and will not be repeated here.

[0042] In the present utility model, since the closer the distance between the correction assembly 7 and the knife seat 9 is, the better the correction effect of the correction assembly 7 on the material strip is, it is necessary to be as close to the knife seat 9 as possible to ensure the position correction accuracy of the material strip. Therefore, when the corona assembly 8 is not needed, the corona assembly 8 is moved to an idle workstation through the pull-out adjustment mechanism, and then the correction assembly 7 is moved to a correction workstation closer to the knife seat 9 through the sliding sleeve adjustment mechanism; and the present utility model changes the fixedly installed corona assembly 8 and the correction assembly 7 into a sliding installation structure, which not only makes the present utility model suitable for the processing and production of different material strips, but also eliminates the need for frequent disassembly and assembly of the correction assembly 7 and the corona assembly 8, and only requires position adjustment according to the actual production process.

[0043] like Figure 1 As shown, the die-cutting device includes a plurality of knife seats 9 arranged in sequence along the X-axis direction. In this embodiment, the structure of the knife seat 9 is the prior art and is well known to ordinary technicians in this field. The layout and quantity of the pressing and cutting processes, and the layout and quantity of the winding roller and the unwinding roller are designed according to the actual situation and will not be repeated here.

[0044] The conveying device includes a flat plate conveyor 10. In the present embodiment, the flat plate conveyor 10 is a prior art and is well known to those skilled in the art, and will not be described in detail herein.

[0045] like Figure 1 and Figure 2 As shown together, a traction mechanism is provided upstream and downstream of the material belt cache device. In the utility model, the traction mechanism located upstream is used to control the speed at which the material belt enters the material belt cache device, and the traction mechanism located downstream is used to control the speed at which the material belt leaves the material belt cache device.

[0046] When the buffering amount of the material strip needs to be increased: the traction mechanism located upstream increases the traction speed, and at the same time the sliding roller group continuously moves away from the fixed roller group, thereby increasing the length of the material strip wound around the fixed roller group and the sliding roller group.

[0047] When it is necessary to reduce the buffer amount of the material tape: the traction mechanism located upstream stops traction, the lifting drive mechanism drives the sliding roller group to continuously move toward the direction close to the fixed roller group, and the traction mechanism located downstream continues to transmit the material tape to the adjustable deviation correction corona device and die-cutting device located downstream. At the same time, the staff replaces the new material tape roll and bonds the material tape on the new material tape roll with the material tape on the old material tape roll. Finally, the traction mechanism located upstream is controlled to perform traction again, thereby realizing non-stop material change of the circular knife die-cutting machine.

[0048] like Figure 2 and Fig.10As shown together, each of the traction mechanisms includes a friction roller 11 rotatably mounted on the machine base 1, each of the friction rollers 11 extends along the Y-axis direction, each of the friction rollers 11 is transmission-connected to a first servo motor 12, a first fixed frame 13 is provided above each of the friction rollers 11, a pair of bearing seats 14 are slidably mounted on the first fixed frame 13 along the radial direction of the friction roller 11, and a pressing roller 15 is rotatably mounted on each pair of the bearing seats 14.

[0049] Moreover, a pair of adjusting screws 16 are threadedly mounted on each of the first fixing frames 13 . The positions of the adjusting screws 16 correspond one-to-one to the positions of the bearing seats 14 . Each of the adjusting screws 16 is fixedly connected to the corresponding bearing seat 14 .

[0050] In this embodiment, the adjusting screw 16 is used to adjust the gap between the pressure roller 15 and the friction roller 11. For ordinary strip materials, the rotating friction roller 11 and the pressure roller 15 are used to extrude and pull the strip. For some sensitive strip materials that cannot be extruded, the pressure roller 15 is driven away from the friction roller 11 by the adjusting screw 16, and the traction is performed solely by the friction force of the rotating friction roller 11. At the same time, a suction structure can also be added to the circumferential surface of the friction roller 11 to increase the friction force between the friction roller 11 and the strip, so as to ensure that the friction roller 11 reliably pulls the strip.

[0051] like Figure 6-Figure 9 As shown together, the pull-out adjustment mechanism includes a fixed bottom plate 17 and a sliding bottom plate 18 that are slidably installed together. A vertical plate 19 is fixed on the machine base 1, and the vertical plate 19 is extended along the Z-axis direction. The fixed bottom plate 17 is fixed to the rear wall of the vertical plate 19, and the sliding bottom plate 18 slides along the Y-axis direction. An opening 20 is penetrated on the vertical plate 19, and the front end of the sliding bottom plate 18 extends to the front side of the vertical plate 19 through the opening 20. The corona assembly 8 is fixed on the sliding bottom plate 18, and a pair of limit pins 21 are plugged and installed on the sliding bottom plate 18. The limit pin 21 is used to limit the sliding base plate 18, and each of the limit pins 21 rests on the front wall of the vertical plate 19. In the utility model, when the corona assembly 8 slides to the corona station on the front side of the vertical plate 19, the sliding base plate 18 slides to the front end of the fixed base plate 17. At this time, the sliding base plate 18 can no longer slide forward. The limiting operation can be completed by only preventing the sliding base plate 18 from sliding backward. The staff inserts the limit pin 21 into the sliding base plate 18. At this time, the limit pin 21 rests on the front wall of the vertical plate 19, and the sliding base plate 18 can be limited and locked.

[0052] Moreover, a locking pin 22 is rotatably installed on the front end of the fixed base plate 17, and a fixing block 23 is fixed on the vertical plate 19. The fixing block 23 is provided with a locking hole 24 adapted to the locking pin 22. In the utility model, when the corona assembly 8 slides to an idle station on the rear side of the vertical plate 19, the locking pin 22 is inserted into the locking hole 24. The staff twists the locking pin 22 so that the locking pin 22 and the locking hole 24 are misaligned, thereby achieving locking of the corona assembly 8.

[0053] The sliding adjustment mechanism includes an X-axis slide 25 slidably installed on the vertical plate 19 along the X-axis direction, the correction assembly 7 is fixed on the X-axis slide 25, and a locking screw 26 is installed on the X-axis slide 25 in a threaded manner. The vertical plate 19 is provided with a plurality of positioning holes 27 arranged in sequence along the X-axis direction, and the position of the positioning hole 27 corresponds to the position of the locking screw 26, and the locking screw 26 is inserted into the corresponding positioning hole 27.

[0054] like Figure 2-Figure 5 As shown together, the lifting drive mechanism includes a second servo motor 28 fixedly mounted on the machine base 1, a synchronous pulley 29 is fixedly mounted on the motor shaft of the second servo motor 28, a toothed idler wheel 30 is arranged directly above the synchronous pulley 29, a synchronous toothed belt 31 is wound around the synchronous pulley 29 and the toothed idler wheel 30, and the lifting base 5 is fixedly mounted on the synchronous toothed belt 31.

[0055] In addition, a slide groove 32 extending along the Z-axis direction is provided on the machine base 1 , and the lifting base 5 is fixedly connected to the synchronous toothed belt 31 through the slide groove 32 .

[0056] In summary, the circular knife die-cutting machine with a caching function proposed in the utility model realizes non-stop material replacement of the circular knife die-cutting machine by setting a material belt caching device, while improving the deviation correction effect of the material belt and ensuring the yield rate of the product.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 circular knife die cutting machine with a buffer function, comprising a machine base, characterized in that: Along the forward direction of the material strip, the machine base is provided with a feeding platform, a material strip buffer device, an adjustable deviation correction corona device, a die cutting device and a conveying device in sequence; The material strip buffer device comprises a fixed roller group and a sliding roller group arranged in an upper and lower position, the fixed roller group comprises a plurality of fixed guide rollers arranged in sequence along the X-axis direction, each of the fixed guide rollers is rotatably mounted on the machine base, the sliding roller group comprises a lifting seat, the lifting seat is slidably mounted on the machine base along the Z-axis direction, the lifting seat is connected to a lifting drive mechanism, a plurality of sliding guide rollers arranged in sequence along the X-axis direction are rotatably mounted on the lifting seat, each of the sliding guide rollers and the fixed guide rollers are extended in the Y-axis direction, and the material strip passes around each of the fixed guide rollers and the sliding guide rollers at intervals; The adjustable deflection correction corona device comprises a deflection correction assembly and a corona assembly, the deflection correction assembly is slidably mounted on the machine base along the X-axis direction, a sliding adjustment mechanism is arranged between the deflection correction assembly and the machine base, the corona assembly is slidably mounted on the machine base along the Y-axis direction, and a pulling adjustment mechanism is arranged between the corona assembly and the machine base; The die-cutting device comprises a plurality of knife seats arranged in sequence along the X-axis direction; The conveying device comprises a flat plate conveyor.

2. The circular knife die cutting machine with a buffer function according to claim 1, characterized in that: A traction mechanism is provided upstream and downstream of the material strip buffer device.

3. The circular knife die cutting machine with a buffer function according to claim 2, characterized in that: Each of the traction mechanisms includes a friction roller rotatably mounted on the machine base, each of the friction rollers extends along the Y-axis direction, each of the friction rollers is transmission-connected to a first servo motor, a first fixed frame is provided above each of the friction rollers, a pair of bearing seats are slidably mounted on the first fixed frame along the radial direction of the friction roller, and a pressing roller is rotatably mounted on each pair of the bearing seats.

4. The circular knife die cutting machine with a buffer function according to claim 3, characterized in that: A pair of adjusting screws are threadedly mounted on each of the first fixing frames, the positions of the adjusting screws correspond one to one with the positions of the bearing seats, and each of the adjusting screws is fixedly connected to the corresponding bearing seat.

5. The circular knife die cutting machine with a buffer function according to claim 1, characterized in that: The pull-out adjustment mechanism includes a fixed bottom plate and a sliding bottom plate slidably installed together, a vertical plate is fixed on the machine base, the vertical plate is extended along the Z-axis direction, the fixed bottom plate is fixed on the rear wall of the vertical plate, the sliding bottom plate slides along the Y-axis direction, an opening is penetrated through the vertical plate, the front end of the sliding bottom plate extends to the front side of the vertical plate through the opening, the corona assembly is fixed on the sliding bottom plate, a pair of limit pins are plugged and installed on the sliding bottom plate, the limit pins are used to limit the sliding bottom plate, and each of the limit pins is against the front wall of the vertical plate.

6. The circular knife die cutting machine with a buffer function according to claim 5, characterized in that: A locking pin is rotatably mounted on the front end of the fixed bottom plate, a fixing block is fixed on the vertical plate, and a locking hole matching the locking pin is provided on the fixing block.

7. The circular knife die cutting machine with a buffer function according to claim 6, characterized in that: The sliding adjustment mechanism includes an X-axis slide plate slidably installed on the vertical plate along the X-axis direction, the correction assembly is fixed on the X-axis slide plate, a locking screw is installed on the X-axis slide in a threaded manner, and the vertical plate is provided with a plurality of positioning holes arranged in sequence along the X-axis direction, the positions of the positioning holes correspond to the positions of the locking screws, and the locking screws are inserted into the corresponding positioning holes.

8. The circular knife die cutting machine with a buffer function according to claim 1, characterized in that: The lifting drive mechanism includes a second servo motor fixedly mounted on the machine base, a synchronous pulley is fixedly mounted on the motor shaft of the second servo motor, a toothed idler wheel is arranged directly above the synchronous pulley, a synchronous toothed belt is wound around the synchronous pulley and the toothed idler wheel, and the lifting seat is fixedly mounted on the synchronous toothed belt.

9. The circular knife die cutting machine with a buffer function according to claim 8, characterized in that: The machine base is provided with a slide groove extending along the Z-axis direction, and the lifting seat is fixedly connected to the synchronous toothed belt through the slide groove.

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