A guillotine cutting device

Abstract

The utility model discloses a paper cutting machine cutting device, it includes crossbeam, big transmission mechanism and cutting mechanism, big transmission mechanism and cutting mechanism all are arranged on crossbeam, one end of crossbeam is equipped with the pivot, and the other end of crossbeam is equipped with adjusting assembly, big transmission mechanism is equipped with lifting assembly and brake assembly, lifting assembly is equipped with mounting seat, and mounting seat is equipped with knife grinding assembly and cleaning assembly, cutting mechanism is equipped with blade, the utility model discloses the knife grinding assembly on lifting assembly has realized the on -line automatic grinding of blade, has guaranteed the cutting quality of blade, through setting up cleaning assembly effectively removes the paper scrap and dust attached on the blade, has prevented the secondary wear and tear of impurity to cutting blade mouth and the pollution to cutting material, not only has prolonged the service life of blade, also has further guaranteed the clean and flat of product cutting surface.

Description

Technical Field

[0001] This utility model relates to the technical field of tissue paper processing equipment, specifically to a paper cutter cutting device. Background Technology

[0002] Currently, the paper cutting and processing industry typically uses rotary paper cutters to cut tissues. However, during the use of paper cutters, there are inevitable times when it is necessary to stop the machine to replace the rotary blade or other parts. At these times, the rotary blade may continue to rotate after the machine stops, posing a significant risk of injury to the user and compromising equipment safety. To address these issues, patent number CN202421302625.9 discloses a paper cutter braking assembly and a paper cutter. The braking assembly is mounted on the drive mechanism of the paper cutter and includes a first braking component, a second braking component, and a third braking component. The first braking component is a telescopic rod device located below the small transmission wheel, configured such that when the telescopic rod is fully extended, its top end abuts against the transmission belt on the small transmission wheel. The second braking component is a first clamping device located at the lower edge of the drive wheel, used to clamp the edge of the drive wheel to achieve braking. The third braking component is a second clamping device located at the upper edge of the large transmission wheel, used to clamp the edge of the large transmission wheel to achieve braking. This invention prevents the blade from continuing to rotate after the machine stops, improving equipment safety. However, the paper cutter still has the following problems: 1. Existing paper cutters include a drive mechanism, a transmission mechanism, and a cutting mechanism with circular blades. In actual production, the blades gradually become dull due to continuous friction with the paper, resulting in uneven cutting edges and increased burrs, affecting product quality. The existing method requires stopping the machine and disassembling the blades for manual grinding or replacement. This process is not only cumbersome and time-consuming, but also seriously affects production efficiency and continuity. 2. Paper scraps and dust generated during the cutting process easily adhere to the blade surface, further aggravating blade wear and potentially contaminating the cutting material. Existing equipment lacks online cleaning functions, making it difficult to maintain the optimal working condition of the blades, affecting cutting quality and efficiency. Utility Model Content

[0003] This utility model addresses the shortcomings of current technology by providing a paper cutter cutting device, aiming to solve the technical problems of existing technology where blades cannot be sharpened in a timely manner and lack cleaning functions.

[0004] The technical solution adopted by this utility model to achieve the above objectives is as follows: A paper cutter cutting device is fixed on a frame. The paper cutter cutting device includes a crossbeam, a large transmission mechanism, and a cutting mechanism, both of which are mounted on the crossbeam. One end of the crossbeam is provided with a rotating shaft, and the other end of the crossbeam is provided with an adjustment assembly. The large transmission mechanism is provided with a lifting assembly and a braking assembly. The lifting assembly is provided with a mounting base, and the mounting base is provided with a sharpening assembly and a cleaning assembly. The cutting mechanism is provided with a blade.

[0005] As a further improvement, the large transmission mechanism includes a first drive motor, a first rotating shaft assembly and a first fixing plate. The first drive motor is fixedly installed above the end of the crossbeam. The crossbeam is provided with a first mounting groove. The first rotating shaft assembly is disposed in the first mounting groove. The drive end of the first rotating shaft assembly is provided with a first connecting flange. The first fixing plate is fixed and disposed on the first connecting flange. A first linkage assembly is provided between the first drive motor and the first rotating shaft assembly.

[0006] As a further improvement, the first rotating shaft assembly is provided with a bearing group, and the cutting mechanism includes a second drive motor, a second rotating shaft, and a third rotating shaft. The second drive motor is fixedly installed on the crossbeam and positioned above the first rotating shaft assembly. The second rotating shaft is disposed within the bearing group to form a axial rotational connection. The first fixed plate is provided with a bearing, and the third rotating shaft is disposed within the bearing to form a axial rotational connection. The third rotating shaft is provided with a third flange, and the blade is fixed on the third flange. Second linkage components are provided between the second drive motor and the second rotating shaft, and between the second rotating shaft and the third rotating shaft. As a further improvement, the end of the first fixed plate is provided with a first mounting block. The lifting assembly includes a first driving member, two oppositely arranged guide rails and a lead screw. The two oppositely arranged guide rails on both sides of the first rotating shaft assembly are both located below the first mounting block. Each guide rail is provided with a slider. The mounting seat is fixedly mounted on the slider. The first mounting block is provided with a fourth bearing. One end of the lead screw is fixedly mounted in the fourth bearing. The lead screw is provided with a lead screw nut seat. The mounting seat is provided with a through-hole for the lead screw to pass through. The lead screw nut seat is fixedly connected to the mounting seat. The driving end of the first driving member is connected to the lead screw and controls the lead screw to perform forward rotation or flipping action.

[0007] As a further improvement, the mounting base is provided with a platform, which is located above the blade. The platform has two sets of spaced straight grooves, and each set of straight grooves has an adjustable sliding first mounting base below it. Each first mounting base has a first mounting part, wherein the first mounting part of one first mounting base is offset from the first mounting part of the other first mounting base to form an included angle. The grinding assembly includes two second driving members, which are respectively fixedly mounted on the mounting part. The driving end of each of the two second driving members is provided with a grinding wheel, and the grinding surfaces of the two grinding wheels are respectively located above the front and rear ends of the blade.

[0008] As a further improvement, mounting strips are provided on both sides of the mounting base, and mounting holes are provided on each mounting strip. Each cleaning component includes an air blowing pipe, one end of which is fixedly installed in the mounting hole, and one end of which is also provided with an interface. The air blowing pipe is also provided with multiple air outlets, which face the blade.

[0009] As a further improvement, the brake assembly includes a brake disc and a disc brake. The brake disc is fixedly positioned on the drive end of the first drive motor. The disc brake is provided with a support. The disc brake is fixed to the side of the crossbeam and positioned below the brake disc by the support. The disc brake is provided with two brake blocks. One end of the brake disc is positioned between the two brake blocks.

[0010] As a further improvement, both the first linkage component and the second linkage component include two synchronous pulleys and a synchronous belt. The synchronous pulleys are positioned and fixedly installed on the drive end of the first drive motor, the drive end of the first rotating shaft assembly, the drive end of the second drive motor, the end of the second rotating shaft, the other end of the second rotating shaft, and the drive end of the third rotating shaft. The synchronous belts are respectively sleeved on the synchronous pulleys at the drive end of the first drive motor and the drive end of the first rotating shaft assembly, the synchronous pulleys at the drive end of the second drive motor and the end of the second rotating shaft, the other end of the second rotating shaft, and the synchronous pulleys at the drive end of the third rotating shaft.

[0011] As a further improvement, the adjustment assembly includes a connecting rod and a screw, the connecting rod having a threaded hole, the screw being disposed in the threaded hole to form a threaded connection, and the end of the screw having an operating part.

[0012] As a further improvement, both the crossbeam and the first fixed plate are provided with a support, and each support is provided with a tensioning roller, which is pressed against the outer surface of the synchronous belt; the blade is a circular blade.

[0013] Compared with the prior art, the paper cutter device provided in this embodiment of the present invention has at least one of the following technical effects: 1. This utility model achieves online automatic grinding of blades through a grinding component mounted on a lifting assembly. When grinding is required, the lifting assembly drives the grinding wheel to precisely approach the edge of the blade, and a second drive motor rotates the blade to complete the grinding operation. This process eliminates the need to disassemble the blade, greatly reducing maintenance time, ensuring the continuity and stability of production, and ensuring that the blade remains sharp at all times, thereby guaranteeing cutting quality.

[0014] 2. By setting up a cleaning component consisting of two opposing and staggered air pipes, compressed air is sprayed onto the rotating blade surface through the air pipes, which can effectively remove paper scraps and dust attached to the blade, prevent impurities from causing secondary wear on the cutting edge and contaminating the cutting material. This not only extends the service life of the blade, but also further ensures the cleanliness and flatness of the product's cutting surface. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the paper cutter cutting device in this embodiment; Figure 2 This is an exploded view of the paper cutter's cutting device in this embodiment; Figure 3 This is a schematic diagram of the connection structure of the lifting assembly, the sharpening assembly, and the cleaning assembly in this embodiment; Figure 4 for Figure 3 Another perspective diagram. Detailed Implementation

[0017] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0018] For examples, see the appendix. Figures 1-4A paper cutter cutting device 1 is fixed on a frame. The paper cutter cutting device 1 includes a crossbeam 2, a large transmission mechanism 3, and a cutting mechanism 4. The large transmission mechanism 3 and the cutting mechanism 4 are both mounted on the crossbeam 2. One end of the crossbeam 2 is provided with a rotating shaft 20, and the other end of the crossbeam 2 is provided with an adjustment component 21. The large transmission mechanism 3 is provided with a lifting component 5 and a braking component 6. The lifting component 5 is provided with a mounting base 50, and the mounting base 50 is provided with a sharpening component 7 and a cleaning component 8. The cutting mechanism 4 is provided with a blade 40.

[0019] The large transmission mechanism 3 includes a first drive motor 30, a first rotating shaft assembly 31, and a first fixing plate 32. The first drive motor 30 is fixedly installed above the end of the crossbeam 2. The crossbeam 2 is provided with a first mounting groove. The first rotating shaft assembly 31 is disposed in the first mounting groove. The driving end of the first rotating shaft assembly 31 is provided with a first connecting flange 310. The first fixing plate 32 is fixed and disposed on the first connecting flange 310. A first linkage assembly 33 is provided between the first drive motor 30 and the first rotating shaft assembly 31. The large transmission mechanism 3 is used to drive the cutting mechanism 4 to rotate. The first rotating shaft assembly 31 includes two oppositely arranged bearing seats and a first rotating shaft. The first rotating shaft is disposed in the bearing of the bearing seat. The first connecting flange 310 is fixedly disposed at the end of the first rotating shaft. The large transmission mechanism 3 is used to drive the rotating mechanism to rotate.

[0020] The first rotating shaft assembly 31 is provided with a bearing group. The cutting mechanism 4 includes a second drive motor 41, a second rotating shaft 42, and a third rotating shaft 43. The second drive motor 41 is fixedly installed on the crossbeam 2 and positioned above the first rotating shaft assembly 31. The second rotating shaft 42 is disposed within the bearing group to form a axial rotational connection. The first fixed plate 32 is provided with a bearing. The third rotating shaft 43 is disposed within the bearing to form a axial rotational connection. The third rotating shaft 43 is provided with a third flange, and the blade 40 is fixed on the third flange. A second linkage assembly 44 is provided between the second drive motor 41 and the second rotating shaft 42, and between the second rotating shaft 42 and the third rotating shaft 43. The second drive motor 41 drives the second rotating shaft 42 to rotate, the second rotating shaft 42 drives the third rotating shaft 43 to rotate, and the third rotating shaft 43 drives the blade 40 to rotate and cut the paper material. The first fixed plate 32 has a first mounting block 320 at its end. The lifting assembly 5 includes a first driving member 51, two opposing guide rails 52, and a lead screw 53. The two opposing guide rails 52 on both sides of the first rotating shaft assembly 31 are both located below the first mounting block 320. Each guide rail 52 has a slider 520. The mounting seat 50 is fixedly mounted on the slider 520. The first mounting block 320 has a fourth bearing 320a. One end of the lead screw 53 is fixedly mounted in the fourth bearing 320a. The lead screw 53 has a lead screw nut seat 530. The mounting seat 50 has a through-hole for the lead screw 53 to pass through. 530 is fixedly connected to the mounting base 50. The driving end of the first driving member 51 is connected to the lead screw 53 and controls the lead screw 53 to perform forward or reverse rotation. The first driving member 51 is preferably a cylinder. The first driving member 51 is located on the side of the first mounting block 320. The fourth bearing 320a is provided with a positioning sleeve. The driving end of the first driving member 51 is fixedly connected to the sleeve. The first driving member 51 performs an outward or retracting action, controlling the sleeve to drive the lead screw 53 to perform a selective rotation action, thereby driving the mounting base 50 to perform an upward or downward action along the guide rail 52, and controlling the grinding assembly 7 to move towards or away from the blade 40.

[0021] The mounting base 50 is provided with a platform 500, which is positioned above the blade 40. The platform 500 has two sets of spaced straight grooves. Below each set of straight grooves is an adjustable sliding first mounting seat 501. Each first mounting seat 501 has a first mounting portion 501a, wherein the first mounting portion 501a of one first mounting seat 501 is offset from the first mounting portion 501a of the other first mounting seat 501, forming an included angle. The grinding assembly 7 includes two second driving members 70, preferably cylinders. The two second driving members 70 are fixedly mounted on the mounting part. Each of the driving ends of the two second driving members 70 is provided with a grinding wheel 71. The grinding surfaces of the two grinding wheels 71 are respectively located above the front and rear ends of the blade 40. When grinding is required, the grinding wheel 71 moves to the outer edge of the blade 40. The cylinder is activated to drive the grinding surface of the grinding wheel 71 to fit against the outer edge of the blade 40. The second driving motor 41 controls the movement of the blade 40. The grinding wheel 71 grinds the blade 40. After grinding is completed, the second driving motor 41 stops, and then the second driving member 70 resets and disengages from the blade 40.

[0022] Mounting strips 502 are provided on both sides of the mounting base 50, and each mounting strip 502 is provided with mounting holes. Each cleaning component 8 includes an air blowing pipe 80, one end of which is fixedly installed in the mounting hole, and the other end of which is also provided with an interface 81. The air blowing pipe 80 is also provided with multiple air outlets 82, which face the blade 40. The interface 81 is used to connect to the air pipe of an external air compressor. The cleaning component 8 is used to clean the surface of the blade 40 by blowing air, so as to prevent impurities on the surface of the blade 40 from affecting the cutting efficiency and quality, and to ensure the quality of the blade 40 in cutting paper.

[0023] The brake assembly 6 includes a brake disc 60 and a disc brake 61. The brake disc 60 is fixedly positioned on the drive end of the first drive motor 30. The disc brake 61 is provided with a support and is fixed to the side of the crossbeam 2 and located below the brake disc 60 via the support. The disc brake 61 is provided with two brake blocks, and one end of the brake disc 60 is positioned between the two brake blocks. The brake assembly 6 is used to provide braking and to quickly brake the first fixed plate 32.

[0024] Both the first linkage component 33 and the second linkage component 44 include two synchronous pulleys and a synchronous belt. The synchronous pulleys are fixedly positioned on the drive end of the first drive motor 30, the drive end of the first rotating shaft assembly 31, the drive end of the second drive motor 41, the end of the second rotating shaft 42, the other end of the second rotating shaft 42, and the drive end of the third rotating shaft 43. The synchronous belts are respectively sleeved on the synchronous pulleys at the drive ends of the first drive motor 30 and the first rotating shaft assembly 31, the drive ends of the second drive motor 41 and the second rotating shaft 42, the other end of the second rotating shaft 42, and the drive end of the third rotating shaft 43. The first linkage component 33 and the second linkage component 44 are used to realize the synchronous linkage between the first fixed plate 32 and the first drive motor 30 and the synchronous linkage between the blade 40 and the second drive motor 41.

[0025] The adjustment assembly 21 includes a connecting rod 210 and a screw 211. The connecting rod 210 has a threaded hole, and the screw 211 is disposed in the threaded hole to form a threaded connection. The end of the screw 211 is provided with an operating part 212. The adjustment assembly 21 is used to adjust the height of the blade 40, thereby adjusting it according to the cutting requirements. One end of the screw 211 is provided with a bearing to form a rotatable connection with the frame. During adjustment, the screw 211 is rotated by operating the operating part 212. The end of the crossbeam 2 rises or falls with the rotation of the screw 211 to achieve the adjustment action.

[0026] Both the crossbeam 2 and the first fixing plate 32 are provided with a support. The side of the crossbeam 2 is provided with a sliding groove, and the support is set in the sliding groove. The first fixing plate 32 is provided with two arrays of straight slots, and the support is set on the straight slots. The support, the sliding groove, and the straight slots are all fastened together by screws. Each support is provided with a tensioning roller 9, which is pressed against the outer surface of the synchronous belt. The tensioning roller 9 is used to ensure the tension of the synchronous belt and to ensure the subsequent driving stability. The blade 40 is a circular blade, and the blade 40 is used to cut paper.

[0027] This invention achieves online automatic blade grinding through a grinding component mounted on a lifting assembly. When sharpening is required, the lifting assembly drives the grinding wheel precisely close to the blade edge, and a second drive motor rotates the blade to complete the grinding operation. This process eliminates the need to disassemble the blade, significantly reducing maintenance time, ensuring production continuity and stability, and guaranteeing that the blade remains sharp at all times, thus ensuring cutting quality. A cleaning assembly consisting of two opposing and staggered air pipes effectively removes paper scraps and dust adhering to the blade by spraying compressed air onto the rotating blade surface. This prevents secondary wear on the cutting edge and contamination of the cut material, extending blade life and further ensuring a clean and smooth cut surface.

[0028] This utility model is not limited to the above-described embodiments. Other paper cutting devices obtained by using the same or similar structures or devices as the above-described embodiments of this utility model are all within the protection scope of this utility model.

Claims

1. A paper cutter cutting device, wherein the paper cutter cutting device is fixed on a frame, characterized in that: The paper cutter cutting device includes a crossbeam, a large transmission mechanism, and a cutting mechanism, both of which are mounted on the crossbeam. One end of the crossbeam is provided with a rotating shaft, and the other end is provided with an adjustment assembly. The large transmission mechanism is provided with a lifting assembly and a braking assembly. The lifting assembly is provided with a mounting base, and the mounting base is provided with a sharpening assembly and a cleaning assembly. The cutting mechanism is provided with a blade.

2. The paper cutter cutting device according to claim 1, characterized in that: The large transmission mechanism includes a first drive motor, a first rotating shaft assembly, and a first fixing plate. The first drive motor is fixedly installed above the end of the crossbeam. The crossbeam is provided with a first mounting groove. The first rotating shaft assembly is disposed in the first mounting groove. The drive end of the first rotating shaft assembly is provided with a first connecting flange. The first fixing plate is fixed and disposed on the first connecting flange. A first linkage assembly is provided between the first drive motor and the first rotating shaft assembly.

3. The paper cutter cutting device according to claim 2, characterized in that: The first rotating shaft assembly is provided with a bearing group. The cutting mechanism includes a second drive motor, a second rotating shaft, and a third rotating shaft. The second drive motor is fixedly installed on the crossbeam and positioned above the first rotating shaft assembly. The second rotating shaft is disposed within the bearing group to form a axial rotational connection. The first fixed plate is provided with a bearing. The third rotating shaft is disposed within the bearing to form a axial rotational connection. The third rotating shaft is provided with a third flange, and the blade is fixed on the third flange. Second linkage components are provided between the second drive motor and the second rotating shaft, and between the second rotating shaft and the third rotating shaft.

4. The paper cutter cutting device according to claim 3, characterized in that: The first fixed plate has a first mounting block at its end. The lifting assembly includes a first driving member, two oppositely arranged guide rails and a lead screw. The two oppositely arranged guide rails on both sides of the first rotating shaft assembly are both located below the first mounting block. Each guide rail has a slider. The mounting seat is fixedly mounted on the slider. The first mounting block has a fourth bearing. One end of the lead screw is fixedly mounted in the fourth bearing. The lead screw has a lead screw nut seat. The mounting seat has a through-hole for the lead screw to pass through. The lead screw nut seat is fixedly connected to the mounting seat. The driving end of the first driving member is connected to the lead screw and controls the lead screw to perform forward rotation or flipping action.

5. The paper cutter cutting device according to claim 4, characterized in that: The mounting base is provided with a platform, which is located above the blade. The platform has two sets of spaced straight grooves. Each set of straight grooves has an adjustable sliding first mounting seat below it. Each first mounting seat has a first mounting part, wherein the first mounting part of one first mounting seat is offset from the first mounting part of the other first mounting seat to form an included angle. The grinding assembly includes two second driving members, which are respectively fixedly mounted on the mounting parts. The driving ends of the two second driving members are provided with grinding wheels, and the grinding surfaces of the two grinding wheels are respectively located above the front and rear ends of the blade.

6. The paper cutter cutting device according to claim 5, characterized in that: The mounting base has mounting strips on both sides, and each mounting strip has mounting holes. Each cleaning component includes an air blowing pipe, one end of which is fixedly installed in the mounting hole. The air blowing pipe also has an interface at one end and multiple air outlets facing the blade.

7. The paper cutter cutting device according to claim 6, characterized in that: The braking assembly includes a brake disc and a disc brake. The brake disc is fixedly positioned on the drive end of the first drive motor. The disc brake is provided with a support and is fixed to the side of the crossbeam and positioned below the brake disc via the support. The disc brake is provided with two brake blocks, and one end of the brake disc is positioned between the two brake blocks.

8. The paper cutter cutting device according to claim 7, characterized in that: Both the first linkage component and the second linkage component include two synchronous pulleys and a synchronous belt. The synchronous pulleys are fixedly positioned on the drive end of the first drive motor, the drive end of the first rotating shaft assembly, the drive end of the second drive motor, the end of the second rotating shaft, the other end of the second rotating shaft, and the drive end of the third rotating shaft. The synchronous belt is respectively sleeved on the synchronous pulleys at the drive end of the first drive motor and the drive end of the first rotating shaft assembly, the synchronous pulleys at the drive end of the second drive motor and the end of the second rotating shaft, the other end of the second rotating shaft, and the synchronous pulleys at the drive end of the third rotating shaft.

9. The paper cutter cutting device according to claim 8, characterized in that: The adjustment assembly includes a connecting rod and a screw. The connecting rod has a threaded hole, and the screw is disposed in the threaded hole to form a threaded connection. The end of the screw has an operating part.

10. The paper cutter cutting device according to claim 9, characterized in that: Both the crossbeam and the first fixed plate are provided with a support, and each support is provided with a tensioning roller. The tensioning rollers are pressed against the outer surface of the synchronous belt. The blade is a circular blade.

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