Paper material cutting device

Abstract

The utility model discloses a paper material cutting device, relates to the technical field of paper material processing and production equipment, solves the problem of inconvenience in operation in the prior art, and comprises a conveying roller and two supporting frames which are arranged at the two ends of the conveying roller at intervals, and a cutter is rotationally connected between the two supporting frames. The cutter can rotate until the cutting edge abuts against the surface of the conveying roller, the cutter is arranged in the length direction of the conveying roller, the cutter is provided with a balance weight groove enabling the cutting edge to deviate in the direction away from the conveying roller under the gravity effect, rotating shafts are arranged at the two ends of the cutter and on the surface away from the cutting edge, and the arc surfaces of the rotating shafts are tangent to the surface of the cutter; the cutter is rotationally connected with the supporting frame through a rotating shaft. Paper materials can be conveyed to the cutter through the transmission roller, the rotating shaft is rotated to drive the cutter to abut against the paper materials and cut off the paper materials, force applied to the rotating shaft is removed, and the cutter rotates to the initial position in the direction away from the transmission roller under the action of gravity so as to be conveniently used next time.

Description

Technical Field

[0001] This application relates to the technical field of paper processing equipment, and in particular to a paper cutting device. Background Technology

[0002] During production, paper materials are usually coiled into long strips and then cut to the required length according to customer needs.

[0003] Existing related technologies include a type of paper cutting machine that includes a conveyor roller for conveying paper and two support frames that are spaced apart at both ends of the conveyor roller. A cutter is rotatably connected between the two support frames. The cutter can be rotated until the blade abuts against the surface of the conveyor roller, and the cutter is arranged along the length direction of the conveyor roller. When the paper is conveyed to a suitable length along the conveyor roller, the paper is cut by rotating the cutter.

[0004] The inventor discovered in practice that if the force of rotating the blade is immediately removed after cutting the paper, it will cause the blade to wobble, which may scratch the paper. Therefore, existing related technologies generally require the operator to hold the handle at all times during the paper cutting process to ensure that the blade does not wobble. The inventor believes that this operation is inconvenient. Utility Model Content

[0005] In order to overcome the inconvenience of operation in the prior art, this application provides a paper cutting device.

[0006] The following technical solution is adopted:

[0007] A paper cutting device includes a conveyor roller for conveying paper and two support frames spaced apart at both ends of the conveyor roller. A cutter is rotatably connected between the two support frames. The cutter is rotatable until its blade abuts against the surface of the conveyor roller, and the cutter is arranged along the length of the conveyor roller. The cutter has a counterweight groove that causes the blade to deflect away from the conveyor roller under the action of gravity. A rotating shaft is respectively provided on the surface of the cutter at both ends away from the blade. The arc surface of the rotating shaft is tangent to the surface of the cutter. The cutter is rotatably connected to the support frame through the rotating shaft.

[0008] By adopting the above technical solution, the paper material is conveyed to the cutter through the transmission roller. The cutting tool is driven to contact the paper material and cut it by rotating the shaft. After the force applied to the shaft is removed, the cutting tool rotates away from the transmission roller to the initial position under the action of gravity, so as to facilitate the next use.

[0009] Optionally, each of the two support frames is provided with a bearing seat at a position corresponding to the two rotating shafts, and a bearing is rotatably connected in the bearing seat, and the rotating shaft is fixedly connected to the inner ring of the bearing.

[0010] By adopting the above technical solution, the combination of bearing and shaft can make the tool more stable during rotation, while reducing the noise caused by friction during rotation.

[0011] Optionally, it may also include a stabilizing component to prevent the tool from wobbling when it is reset after use.

[0012] By adopting the above technical solution, when the tool is reset and transported under the action of gravity, it will reciprocate around the axis of rotation due to inertia. Adding stabilizing components can prevent the tool from shaking.

[0013] Optionally, the stabilizing component includes two protrusions respectively disposed on the two support frames. The positions of the protrusions correspond to the positions of the rotating shaft and are spaced apart from the rotating shaft. Each protrusion has a sliding abutment connected to it. One end of the abutment extends through the protrusion to abut against the rotating shaft. The end of the abutment extending through the protrusion is rounded. The end of the abutment away from the rotating shaft is connected to an elastic element. The rotating shaft has a semi-circular abutment groove for the rounded head of the abutment to enter when the tool is in the initial state.

[0014] By adopting the above technical solution, when the tool is in the initial state, the abutment block enters the abutment groove. After the tool is rotated, the abutment block is pushed out of the abutment groove and moves into the protrusion because the end of the abutment block that abuts the shaft is round. When the tool is finished using, the abutment block is pushed into the abutment groove by the elastic element under the action of gravity when the shaft rotates to the initial position, so as to slow down the rotation trend of the tool.

[0015] Optionally, the stabilizing component includes two connecting blocks respectively disposed on the two support frames, two rotating shafts respectively passing through the connecting blocks and rotatable within the connecting blocks, one or two limiting blocks disposed on the outer wall of the connecting blocks, and a clearance groove for the corresponding limiting block to pass through is provided in the connecting block along the moving path of the limiting block, the clearance groove being arc-shaped.

[0016] By adopting the above technical solution, when the tool rotates to the initial position, the limiting block abuts against the inner wall of the end of the relief groove, thereby limiting the tool to avoid excessive rotation. Under the constraint of the tool's own weight and the relief groove, the tool can be more stable when passing through the initial position.

[0017] Optionally, the stabilizing component further includes two coil springs respectively disposed on the two support frames, the coil springs being sleeved on the corresponding rotating shafts to give the rotating shafts a tendency to drive the cutter away from the conveying rollers.

[0018] By adopting the above technical solution, the coil spring provides resistance to the rotation of the shaft, improving the stability of the tool and making the rotation more linear for the operator when operating the tool.

[0019] Optionally, the bearing is filled with damping oil.

[0020] By adopting the above technical solution, the damping increases the resistance of the tool during rotation, thereby improving the stability of the tool and making the rotation more linear for the operator.

[0021] Optionally, one end of the rotating shaft is also connected to a handle for easy rotation by hand, and the outer wall of the handle is tangent to the outer wall of the rotating shaft.

[0022] By adopting the above technical solution, it is convenient for a person to rotate the shaft manually.

[0023] In summary, this application includes at least one of the following beneficial effects:

[0024] 1. A paper cutting device with a relatively simple structure and low cost is provided. By setting the counterweight groove of the cutter and the relative position of the rotating shaft and the cutter, the cutter can be reset by gravity alone after cutting the paper.

[0025] 2. The stabilizing components make the cutting tool more stable and safer during use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0027] Figure 2 This is a schematic diagram of the stable component structure in Embodiment 1;

[0028] Figure 3 This is a schematic diagram of the stable component structure in Embodiment 2.

[0029] Explanation of reference numerals in the attached drawings: 1. Conveyor roller; 2. Cutting tool; 21. Rotating shaft; 211. Abutment groove; 212. Limiting block; 22. Counterweight groove; 23. Handle; 3. Support frame; 31. Protrusion; 32. Connecting block; 33. Bearing seat; 331. Bearing; 4. Stabilizing component; 41. Abutment block; 42. Elastic element; 43. Coil spring; 431. Housing; 44. Relief groove. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 To be continued Figure 3 This application will be described in further detail.

[0031] Example 1:

[0032] Reference Figure 1This embodiment discloses a paper cutting device, including a conveyor roller 1 for conveying paper and two support frames 3 spaced apart from the conveyor roller 1 at both ends of the conveyor roller 1. A cutter 2 is rotatably connected between the two support frames 3. The cutter 2 can be rotated until the blade abuts against the surface of the conveyor roller 1. The cutter 2 is arranged along the length direction of the conveyor roller 1. The cutter 2 has a counterweight groove 22 that causes the blade to deflect away from the conveyor roller 1 under the action of gravity. A rotating shaft 21 is respectively arranged on the surface of the cutter 2 at both ends away from the blade. The arc surface of the rotating shaft 21 is tangent to the surface of the cutter 2. The cutter 2 is rotatably connected to the support frame 3 through the rotating shaft 21.

[0033] Reference Figure 2 Specifically, the cutting tool 2 is a long, strip-shaped piece. Counterweight grooves 22 are formed on the surface of the cutting tool 2 away from the cutting edge, and are distributed in a dot matrix pattern on the surface of the cutting tool 2. The rotating shaft 21 is attached to the cutting tool 2 and then welded for fixation. A handle 23 for easy gripping is also provided on one side of the rotating shaft 21, and the handle 23 is also attached to the surface of the rotating shaft 21 and welded. Bearing seats 33 are provided on both support frames 3 at positions corresponding to the two rotating shafts 21. Bearings 331 are rotatably connected to the bearing seats 33. The rotating shaft 21 and the inner ring of the bearing 331 are interference-fitted. The bearing seats 33 are fixed to the support frames 3 by bolts.

[0034] Reference Figure 2 The stabilizing component 4 includes two protrusions 31 respectively disposed on two support frames 3. The positions of the protrusions 31 correspond to the positions of the rotating shaft 21 and are spaced apart from the rotating shaft 21. The protrusions 31 extend from the support frame 3 in the direction of the rotating shaft 21. A stop block 41 is slidably connected in the protrusions 31. One end of the stop block 41 passes through the protrusions 31 and abuts against the rotating shaft 21. The end of the stop block 41 that passes through the protrusions 31 is round. An elastic element 42, which is a spring, is connected to the end of the stop block 41 away from the rotating shaft 21. The rotating shaft 21 has a semi-circular abutment groove 211 for the round head of the stop block 41 to enter when the tool 2 is in the initial state.

[0035] In addition, damping oil is added inside bearing 331. Due to the damping, the resistance of the tool 2 during rotation is increased, which improves the stability of the tool 2 and makes the rotation of the tool 2 more linear when operated by the operator.

[0036] The implementation principle of this embodiment is as follows:

[0037] The paper material is conveyed to the cutter 2 via the drive roller. Rotating the shaft 21 causes the cutter 2 to contact and cut the paper material. After the force applied to the shaft 21 is removed, the cutter 2 rotates away from the drive roller under gravity back to its initial position for future use. Due to the stabilizing component 4, the abutment block 41 enters the abutment groove 211 when the cutter 2 is in its initial state. After the cutter 2 is rotated, the abutment block 41, with its rounded end contacting the shaft 21, is pushed out of the abutment groove 211 and moves into the protrusion 31. When the cutter 2 is no longer in use, under gravity, as the shaft 21 rotates back to its initial position, the abutment block 41 is pushed into the abutment groove 211 by the elastic element 42, thus slowing down the rotation of the cutter 2.

[0038] Example 2:

[0039] Reference Figure 3 The difference between this embodiment and embodiment one is that the stabilizing component 4 and the fact that damping oil is not applied to the bearing 331 in this embodiment. The stabilizing component 4 in this embodiment includes two connecting blocks 32 and two coil springs 43. The connecting blocks 32 are fixed to the support frame 3. The two rotating shafts 21 pass through the corresponding connecting blocks 32 and can rotate in the connecting blocks 32. The rotating shafts 21 have two limit blocks 212 evenly arranged in a circumferential array on the outer wall of the connecting blocks 32. The connecting blocks 32 have relief grooves 44 on the moving path of the two limit blocks 212 for the corresponding limit blocks 212 to pass through. The relief grooves 44 are arc-shaped and the angle of the relief grooves 44 is equal to the angle that the rotating shafts 21 rotate through from the initial position of the cutter 2 to the point where the cutter 2 abuts against the transmission roller. The coil spring 43 is sleeved on the corresponding rotating shaft 21, causing the rotating shaft 21 to tend to drive the cutter 2 to move away from the conveyor roller 1. The coil spring 43 is sleeved on a housing 431 to protect the coil spring 43. The housing 431 is connected to the support frame 3.

[0040] The implementation principle of this embodiment is as follows:

[0041] When the tool 2 rotates to the initial position, the limiting block 212 abuts against the inner wall of the end of the relief groove 44, thereby limiting the tool 2 to prevent excessive rotation. The coil spring 43 provides resistance to the rotation of the shaft 21, improving the stability of the tool 2. Under the constraint of the tool 2's own weight and the relief groove 44, the tool 2 can stabilize relatively quickly when passing through the initial position.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A paper cutting device, comprising a conveyor roller (1) for conveying paper and two support frames (3) spaced apart from the conveyor roller (1) at both ends of the conveyor roller (1), wherein a cutter (2) is rotatably connected between the two support frames (3), the cutter (2) is rotatable until its blade abuts against the surface of the conveyor roller (1), and the cutter (2) is arranged along the length direction of the conveyor roller (1), characterized in that: The cutting tool (2) has a counterweight groove (22) that causes the cutting edge to deflect away from the conveying roller (1) under the action of gravity. The cutting tool (2) has a rotating shaft (21) on both ends and on the surface away from the cutting edge. The arc surface of the rotating shaft (21) is tangent to the surface of the cutting tool (2). The cutting tool (2) is rotatably connected to the support frame (3) through the rotating shaft (21).

2. The paper cutting device according to claim 1, characterized in that: Each of the two support frames (3) is provided with a bearing seat (33) at a position corresponding to the two rotating shafts (21). A bearing (331) is rotatably connected in the bearing seat (33), and the rotating shaft (21) is fixedly connected to the inner ring of the bearing (331).

3. The paper cutting device according to claim 2, characterized in that: It also includes a stabilizing component (4) to prevent the tool (2) from shaking when it is reset after use.

4. The paper cutting device according to claim 3, characterized in that: The stabilizing component (4) includes two protrusions (31) respectively disposed on the two support frames (3). The position of the protrusions (31) corresponds to the position of the rotating shaft (21) and is spaced apart from the rotating shaft (21). Each protrusion (31) is slidably connected with a stop block (41). One end of the stop block (41) extends out of the protrusion (31) to abut against the rotating shaft (21). The end of the stop block (41) extending out of the protrusion (31) is round. The end of the stop block (41) away from the rotating shaft (21) is connected to an elastic element (42). The rotating shaft (21) has a stop groove (211) on which the round head of the stop block (41) enters the semi-circular stop when the tool (2) is in the initial state.

5. A paper cutting device according to claim 3, characterized in that: The stabilizing component (4) includes two connecting blocks (32) respectively disposed on the two support frames (3). Two rotating shafts (21) pass through the connecting blocks (32) respectively and can rotate in the connecting blocks (32). The rotating shafts (21) are provided with one or two limiting blocks (212) on the outer wall inside the connecting block (32). The connecting block (32) has a relief groove (44) for the corresponding limiting block (212) to pass through on the moving path of the limiting block (212). The relief groove (44) is arc-shaped.

6. A paper cutting device according to claim 5, characterized in that: The stabilizing component (4) also includes two coil springs (43) respectively disposed on the two support frames (3), the coil springs (43) being sleeved on the corresponding rotating shaft (21) so that the rotating shaft (21) has a tendency to drive the cutter (2) to move away from the conveying roller (1).

7. A paper cutting device according to claim 4, characterized in that: The bearing (331) is filled with damping oil.

8. A paper cutting device according to claim 1, characterized in that: One end of the rotating shaft (21) is also connected to a handle (23) for easy rotation by hand, and the outer wall of the handle (23) is tangential to the outer wall of the rotating shaft (21).

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