Hob paper cutting device and printer

Abstract

The utility model provides a hobbing cutter paper cutting device and printer, including paper cutting component, assembly support and drive component, the assembly support is equipped with the paper feed end face vertically above, the paper feed end face is equipped with the paddle-tumbler in penetrating mode, the paper cutting component includes the paper cutting support, upper hobbing cutter, lower hobbing cutter and rotation drive roller, and the paper cutting support is equipped with the paddle-tumbler. The edge of the upper hobbing cutter and the edge of the lower hobbing cutter form a hobbing part, the hobbing part is located at the paddle-tumbling groove, the driving assembly drives the paper cutting support to move in the horizontal paper width direction, and the peripheral face of the rotating driving roller is in rolling abutting connection with the assembling support. In addition, the rotating force obtained when the driving roller is rotated to move is transmitted to the upper hobbing cutter or the lower hobbing cutter, and the cutting force of the hobbing cutters is improved through active rotation of the hobbing cutters.

Description

Technical Field

[0001] This utility model relates to the field of printers, specifically to a rotary paper cutting device and a printer. Background Technology

[0002] Currently, most wide-format printers on the market use two long blades, one above the other. The disadvantage is that wide-format printers generally print on a wider area, making it difficult to keep the blades flat over a long distance. This results in the upper and lower blades not fitting together well, leading to poor cutting performance. In particular, when printing adhesive-backed consumables, the adhesive is easily squeezed out, causing paper jams or sticking. Utility Model Content

[0003] The primary objective of this invention is to provide a paper cutting device that improves the cutting force of the roller cutter.

[0004] The second objective of this invention is to provide a printer having the aforementioned rotary paper cutting device.

[0005] To achieve the first objective of this utility model, it provides a rotary paper cutting device, including a paper cutting assembly, an assembly bracket, and a drive assembly. The assembly bracket has a paper feeding end face vertically upwards, extending horizontally, and a groove extending vertically through the paper feeding end face, extending horizontally along the paper width direction. The paper cutting assembly includes a paper cutting bracket, an upper rotary cutter, a lower rotary cutter, and a rotating drive roller. The paper cutting bracket includes an upper bracket, a lower bracket, and a connecting plate, which connects the upper and lower brackets and passes through the groove. The upper bracket is located vertically above the groove, and the lower bracket is located vertically below the groove. The upper rotary cutter rotates around its rotation axis. The upper and lower rollers are rotatably mounted on the upper support, and the lower rollers are rotatably mounted on the lower support around the rotation axis. The edges of the upper and lower rollers overlap along the horizontal paper length direction to form a roller cutting section, which is located at the grooving point. The rotation axis is parallel to the horizontal paper length direction. The drive assembly is connected to the paper cutting support and drives the paper cutting support to move along the horizontal paper width direction. The rotating drive roller is rotatably mounted on the paper cutting support. The outer circumferential surface of the rotating drive roller is in rolling contact with the mounting support. The rotating drive roller is connected to the upper or lower roller. The movement of the paper cutting support will drive the rotating drive roller to rotate, and the rotation of the rotating drive roller will drive the upper or lower roller to rotate.

[0006] A further proposed solution is to have the outer circumferential surface of the rotating drive roller roll adjacent to the paper feed end face, and while the rotating drive roller moves along the horizontal paper width direction, the driving drive roller rotates around the rotation axis.

[0007] A further proposed solution is to mount the rotation drive roller on the lower support, with the outer circumferential surface of the rotation drive roller rolling adjacent to the lower surface of the paper feed end face.

[0008] A further proposed solution is to have a drive tooth on the rotating drive roller, a driven tooth on the lower hob, and a transmission gear on the lower support, with the transmission gear connecting the drive tooth and the driven tooth.

[0009] A further embodiment includes a pressure spring in the paper cutting assembly. The pressure spring is arranged along the rotation axis and abuts against the upper support and the upper cutter. The pressure spring applies a pressure force to the upper cutter toward the lower cutter.

[0010] A further proposed solution is that the drive assembly includes a drive motor and a transmission belt, with the transmission belt connected between the drive motor and the lower support. The drive motor drives the transmission belt to move along the horizontal paper width direction, and the transmission belt drives the lower support to move along the horizontal paper width direction.

[0011] A further embodiment includes a drive assembly comprising a reversing wheel, a ratchet cover, a locking spring, and a drive column. The drive belt is arranged in a racetrack shape and has teeth on its inner side. A half-gear is provided on the outer circumferential surface of the reversing wheel. A first ratchet is provided on the axial end face of the reversing wheel, and a second ratchet is provided on the axial end face of the ratchet cover. The first and / or second ratchet are provided with sliding ramps. The locking spring applies an elastic locking force to the ratchet cover towards the reversing wheel. The drive column is arranged along the rotation axis, and the fixed end of the drive column is fixedly connected to the lower bracket. The drive column passes through the ratchet cover and the reversing wheel. The ratchet cover is drivenly connected to the drive column, and the reversing wheel can rotate around the drive column. The first and second ratchets are adjacent to each other, and the half-gear is connected to the teeth.

[0012] A further embodiment is that the paper cutting assembly includes a pressure roller and a pressure elastic element. The pressure roller is movably mounted on the upper support and rolls adjacent to the upper surface of the paper feed end face. The pressure elastic element is connected to the pressure roller and applies a pressure force toward the paper feed end face to the pressure roller.

[0013] A further proposed solution is that the paper cutting assembly includes two paper pressing rollers and a paper pressing bracket. The axial direction of the paper pressing rollers is parallel to the horizontal paper length direction. The two paper pressing rollers are arranged along the horizontal paper length direction and rotatably mounted on the paper pressing bracket. The paper pressing bracket is connected to the upper bracket. The paper pressing elastic element is connected to the paper pressing bracket. One paper pressing roller rolls adjacent to the paper feeding end face on the front side of the slot, and the other paper pressing roller rolls adjacent to the paper feeding end face on the rear side of the slot.

[0014] To achieve the second objective of this utility model, this utility model provides a printer, including a rotary paper cutter as described above.

[0015] The beneficial effects of this invention are as follows: The upper and lower rollers form a cutting section, which, in conjunction with the paper-cutting bracket, moves along the horizontal paper width direction. This movement of the cutting section achieves stable cutting of wide-width printing paper. Furthermore, the rotational force generated by the rotating drive roller during movement is transmitted to the upper or lower roller, increasing the cutting force through the active rotation of the roller. Additionally, the engagement of the rotating drive roller with the lower surface of the paper feed end face, along with the transmission of the drive teeth, facilitates the transmission of the lower roller without affecting the flatness of the paper feed end face. Moreover, the arrangement of the holding springs improves the tightness of the fit between the upper and lower rollers, thereby enhancing the cutting force. Furthermore, the unidirectional drive motor's unidirectional transmission of the drive belt, combined with the elastic reversing of the reversing wheel and ratchet cover, achieves reciprocating movement along the horizontal paper width direction. This simplifies the reciprocating drive structure and position detection structure, effectively reducing costs and improving operational stability. Finally, by placing pressure rollers on the front and rear sides of the slot, the pressure rollers can hold both ends of the printing paper, preventing the printing paper from shifting or sliding, thereby improving the cutting performance of the roller cutter. Attached Figure Description

[0016] Figure 1 This is a structural diagram of an embodiment of the rotary paper cutting device of the present invention.

[0017] Figure 2 This is a structural diagram of an embodiment of the rotary paper cutting device of the present invention from another perspective.

[0018] Figure 3 This is a structural diagram of the paper cutting device according to the present invention, with the bracket assembled but omitted from the embodiment.

[0019] Figure 4 This is a structural diagram of the paper cutting device according to the present invention, omitting the assembly bracket.

[0020] Figure 5 This is a partial structural diagram of the paper cutting component in an embodiment of the rotary paper cutting device of the present invention.

[0021] Figure 6 This is a partial structural diagram of the paper cutting component in an embodiment of the rotary paper cutting device of the present invention from another perspective.

[0022] Figure 7 This is a structural diagram of the reversing wheel and ratchet cover plate in an embodiment of the rotary paper cutting device of the present invention.

[0023] Figure 8 This is a structural diagram of the driving component in the initial position in an embodiment of the rotary paper cutting device of the present invention.

[0024] Figure 9 This is a structural diagram of the drive component in the end position in an embodiment of the rotary paper cutting device of the present invention.

[0025] Figure 10This is a vertical cross-sectional view of an embodiment of the rotary paper cutting device of the present invention.

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0027] Reference Figures 1 to 10 The rotary paper cutting device includes a paper cutting assembly 2, an assembly bracket 1, and a drive assembly 3. The assembly bracket 1 is arranged in a rectangular shape and has a receiving cavity inside. The assembly bracket 1 has a paper feeding end face 111 at the top vertically. The paper feeding end face 111 extends along the horizontal plane. The paper feeding end face 111 is provided with a scribing groove 12 through it in the vertical direction. The scribing groove 12 extends along the horizontal paper width direction Y.

[0028] The paper cutting assembly 2 includes a paper cutting bracket 21, an upper roller 221, a lower roller 222, a holding spring 224, a rotation drive roller 24, a paper pressing elastic element 231, two paper pressing rollers 232, and a paper pressing bracket 233. The paper cutting bracket 21 includes an upper bracket 211, a lower bracket 212, and a connecting plate 213. The connecting plate 213 connects the upper bracket 211 and the lower bracket 212, forming a paper passage gap between them. The connecting plate 213 passes through a scribing groove 12. The upper bracket 211 is located vertically above the scribing groove 12, and the lower bracket 212 is located vertically below it. The paper feed end face 111 passes through the paper passage gap between the upper bracket 211 and the lower bracket 212. A position sensor 13 is provided at one end of the scribing groove 12 to detect the movement position of the connecting plate 213. The bottom of the lower support 212 is provided with a pulley 25, and the bottom wall of the mounting support 1 is provided with a slide rail 112. The slide rail 112 extends along the horizontal paper width direction Y, and the pulley 25 moves on the slide rail 112, thereby realizing the stable movement of the paper cutting support 21 along the horizontal paper width direction Y.

[0029] The upper hob 221 is rotatably mounted on the upper support 211 about the rotation axis. The holding spring 224 is arranged along the rotation axis and abuts between the upper support 211 and the upper hob 221. The holding spring 224 applies a holding force to the upper hob 221 toward the lower hob 222.

[0030] The upper end 234 of the paper pressing bracket 233 is hinged to the upper bracket 211. Two paper pressing wheels 232 are disposed at the lower end of the paper pressing bracket 233. The axial direction of the paper pressing wheels 232 is parallel to the horizontal paper length direction X. The two paper pressing wheels 232 are arranged along the horizontal paper length direction X and are rotatably disposed on the paper pressing bracket 233. The paper pressing elastic element 231 is connected between the paper pressing bracket 233 and the upper bracket 211. Then, the paper pressing wheels 232 are movably disposed on the upper bracket 211 and roll adjacent to the upper surface of the paper feeding end face 111. One paper pressing wheel 232 rolls adjacent to the paper feeding end face 111 on the front side of the slot 12, and the other paper pressing wheel 232 rolls adjacent to the paper feeding end face 111 on the rear side of the slot 12. The paper pressing elastic element 231 applies a paper pressing force toward the paper feeding end face 111 to the paper pressing wheel 232.

[0031] The lower roller 222 is rotatably mounted on the lower support 212 about the rotation axis. The edge of the upper roller 221 overlaps with the edge of the lower roller 222 along the horizontal paper length direction X to form a rolling cutting part. The rolling cutting part is located at the scribing groove 12, and the rotation axis is parallel to the horizontal paper length direction X.

[0032] The drive assembly 3 is connected to the paper cutter 21 and drives the paper cutter 21 to move along the horizontal paper width direction Y. The rotating drive roller 24 is rotatably mounted on the paper cutter 21. The outer peripheral surface of the rotating drive roller 24 is in rolling contact with the mounting bracket 1. Specifically, the rotating drive roller 24 and the transmission gear 242 are located inside the lower bracket 212. The rotating drive roller 24 is mounted on the lower bracket 212. The outer peripheral surface 241 of the rotating drive roller 24 is in rolling contact with the lower surface of the paper feed end face 111. While the rotating drive roller 24 moves along the horizontal paper width direction Y, the rotating drive roller 24 rotates around the rotation axis. The rotating drive roller 24 is provided with a drive tooth 242, the lower cutter 222 is provided with a driven tooth 223, and the lower support 212 is provided with a transmission gear 242. The transmission gear 242 is connected between the drive tooth 242 and the driven tooth 223. Then, the movement of the paper cutting support 21 will drive the rotating drive roller 24 to rotate, and the rotation of the rotating drive roller 24 will drive the rotation of the lower cutter 222. The pressure roller 232 is located in front of the upper support 211 in the paper cutting direction, and the upper cutter 221 and the lower cutter 222 are located in the rear of the paper cutting support 21 in the paper cutting direction.

[0033] The drive assembly 3 includes a drive motor 311, a transmission belt 316, a reversing wheel 33, a ratchet cover plate 34, a locking spring 35, and a transmission column 32. The drive motor 311 is a unidirectional drive motor. The drive motor 311 is fixedly mounted on the mounting bracket 1 and has a gear 312 at the end of the output shaft. The transmission belt 316 is arranged in a racetrack shape and has teeth on the inner side. The teeth include an upper tooth 317 and a lower tooth 318. Support wheels 314 and 315 are respectively provided at both ends of the transmission belt 316. The support wheel 314 is located at the initial paper cutting position, and the support wheel 315 is located at the end paper cutting position. The drive motor 311 is connected to the support wheel 314 through the gear 312 and the transmission gear 313, thereby driving the transmission belt 316 to rotate along the horizontal paper width direction Y.

[0034] The outer peripheral surface of the reversing wheel 33 is provided with a half gear 332, the axial end face of the reversing wheel 33 is provided with a first ratchet 331, the axial end face of the ratchet cover plate 34 is provided with a second ratchet 341, the first ratchet 331 and the second ratchet 341 are respectively provided with sliding inclined surfaces, the locking spring 35 is located on the outside of the ratchet cover plate 34, and the outer end position of the locking spring 35 and the outer end position of the ratchet cover plate 34 are limited by the screw 36. The screw 36 is connected to the outer end of the drive column 32, and the locking spring 35 applies an elastic locking force toward the reversing wheel 33 to the ratchet cover plate 34.

[0035] The transmission column 32 is arranged along the rotation axis. The fixed end of the transmission column 32 is fixedly connected to the lower bracket 212. The outer end of the transmission column 32 is provided with a driving surface. The ratchet cover plate 34 is provided with a driving hole 342. The driving hole 342 is provided with a driving surface. The transmission column 32 passes through the ratchet cover plate 34 and the reversing wheel 33. The ratchet cover plate 34 is drivenly connected to the transmission column 32, that is, the driving surface cooperates with the driving hole 342. Then, the ratchet cover plate 34 does not rotate with the fixed transmission column 32, but the ratchet cover plate 34 can move along the axial direction of the transmission column 32. The reversing wheel 33 can rotate around the transmission column 32.

[0036] Reference Figure 8 and combined Figure 10The printing paper 10 travels on the paper feed end face 111 and passes through the paper feed gap. Before cutting the paper, the reversing wheel 33 is in the initial position close to the support wheel 314. At this time, the half gear 332 of the reversing wheel 33 is located above and connected to the upper tooth 317. The lower bracket 212 is also provided with limit brackets 214 on the upper and lower sides of the transmission belt 316. When the transmission belt 316 rotates counterclockwise, the first ratchet 331 of the reversing wheel 33 engages with the inclined surface of the second ratchet 341 of the ratchet cover plate 34. The locking spring 35 presses against the ratchet cover 34, preventing the first ratchet 331 and the second ratchet 341 from sliding relative to each other. The lower support 212 then moves along the horizontal paper width direction Y. The outer peripheral surface 241 of the rotating drive roller 24 rolls and abuts against the lower surface of the paper feed end face 111, thereby driving the lower roller 222 to rotate and move, and completing the cutting of the printing paper 10. During the paper cutting movement, the pressure roller 232 presses against the printing paper 10, which can improve the cutting effect.

[0037] Reference Figure 9 When the paper cutting is completed, the reversing wheel 33 is located near the end position of the support wheel 315. Limiting brackets 112 are provided on both sides of the support wheel 315. The limiting bracket 214 is adjacent to the limiting bracket 112 and realizes the limiting of the horizontal paper width direction Y. Due to the unidirectional rotation of the transmission belt 316, the first ratchet 331 and the second ratchet 341 engage with each other on the inclined surface, driving the ratchet cover plate 34 to move outward along the transmission column 32 in the axial direction. Then the first ratchet 331 and the second ratchet 341 separate, the reversing wheel 33 rotates and connects the half gear 332 and the lower tooth 318, thereby realizing the reversing of the reversing wheel 33. The first ratchet 331 is adjacent to the second ratchet 341 again. With the counterclockwise rotation of the transmission belt 316, the paper cutting assembly 2 can be moved back to the initial position and reset.

[0038] Of course, the above embodiments are only preferred embodiments of this case. In practical applications, the drive assembly can also have other drive methods, such as using a bidirectional drive motor or a servo motor, which can also drive the movement of the transmission belt or transmission rack, and can also realize the movement of the lower support. In addition, besides rolling adjacent to the lower surface of the paper feeding end face, the rotating drive roller can also roll adjacent to the upper surface of the paper feeding end face, or to other end faces of the mounting bracket. The rotation axis of the rotating drive roller can be arranged in different directions, which can also realize the movement and rotation of the rotating drive roller, thereby driving the rotation of the lower cutter. Furthermore, the rotating drive roller can also be connected to the upper cutter, and the rotation of the rotating drive roller can also drive the upper cutter to rotate.

[0039] The printer includes a rotary paper cutter as described above. The printer has a paper outlet, and the rotary paper cutter is arranged at the paper outlet. After printing, the printed paper is fed onto the paper feed end face 111, and then cut at the groove 12.

[0040] As can be seen above, the upper and lower rollers form a cutting section, which moves along the horizontal paper width direction in conjunction with the paper cutting bracket. The movement of the cutting section then achieves stable cutting of wide-width printing paper. In addition, the rotational force obtained by the rotating drive roller during its movement is transmitted to the upper or lower roller, thereby increasing the cutting force of the roller by utilizing its active rotation.

Claims

1. A rotary paper cutting device, characterized in that, Includes paper cutting assembly, assembly bracket, and drive assembly; The assembly bracket has a paper feeding end face in the vertical direction, the paper feeding end face extends along the horizontal plane, and a groove is provided through the paper feeding end face in the vertical direction, the groove extending along the horizontal paper width direction; The paper cutting assembly includes a paper cutting bracket, an upper roller, a lower roller, and a rotation drive roller. The paper cutting bracket includes an upper bracket, a lower bracket, and a connecting plate. The connecting plate is connected between the upper bracket and the lower bracket and passes through the scribing groove. The upper bracket is located vertically above the scribing groove, and the lower bracket is located vertically below the scribing groove. The upper roller is rotatably mounted on the upper bracket about a rotation axis, and the lower roller is rotatably mounted on the lower bracket about the rotation axis. The edges of the upper roller and the lower roller overlap along the horizontal paper length direction to form a rolling cutting section. The rolling cutting section is located at the scribing groove, and the rotation axis is parallel to the horizontal paper length direction. The driving assembly is connected to the paper cutting bracket and drives the paper cutting bracket to move along the horizontal paper width direction. The rotating driving roller is rotatably mounted on the paper cutting bracket. The outer peripheral surface of the rotating driving roller is in rolling contact with the mounting bracket. The rotating driving roller is connected to the upper roller or the lower roller. The movement of the paper cutting bracket will drive the rotating driving roller to rotate, and the rotation of the rotating driving roller will drive the upper roller or the lower roller to rotate.

2. The rotary paper cutting device according to claim 1, characterized in that: The outer peripheral surface of the rotating drive roller rolls adjacent to the paper feed end face. While the rotating drive roller moves along the horizontal paper width direction, it also rotates around the rotation axis.

3. The rotary paper cutting device according to claim 2, characterized in that: The rotating drive roller is mounted on the lower support, and the outer peripheral surface of the rotating drive roller rolls adjacent to the lower surface of the paper feed end face.

4. The rotary paper cutting device according to claim 3, characterized in that: The rotating drive roller is provided with drive teeth, the lower hob is provided with driven teeth, and the lower bracket is provided with a transmission gear, which is connected between the drive teeth and the driven teeth.

5. The rotary paper cutting device according to claim 3, characterized in that: The paper cutting assembly also includes a holding spring arranged along the rotation axis, the holding spring abutting between the upper support and the upper roller, the holding spring applying a holding force toward the lower roller to the upper roller.

6. The rotary paper cutting device according to claim 1, characterized in that: The drive assembly includes a drive motor and a transmission belt. The transmission belt is connected between the drive motor and the lower support. The drive motor drives the transmission belt to move along the horizontal paper width direction, and the transmission belt drives the lower support to move along the horizontal paper width direction.

7. The rotary paper cutting device according to claim 6, characterized in that: The drive assembly includes a reversing wheel, a ratchet cover plate, a locking spring, and a drive column. The drive motor is a unidirectional drive motor. The transmission belt is arranged in a racetrack shape and has teeth on its inner side. A half-gear is provided on the outer peripheral surface of the reversing wheel. A first ratchet is provided on the axial end face of the reversing wheel. A second ratchet is provided on the axial end face of the ratchet cover plate. The first ratchet and / or the second ratchet are provided with sliding inclined surfaces. The locking spring applies an elastic locking force toward the reversing wheel to the ratchet cover plate. The transmission column is arranged along the rotation axis, the fixed end of the transmission column is fixedly connected to the lower bracket, the transmission column passes through the ratchet cover plate and the reversing wheel, the ratchet cover plate is drivenly connected to the transmission column, the reversing wheel can rotate around the transmission column, the first ratchet tooth is adjacent to the second ratchet tooth, and the half gear is connected to the tooth portion.

8. The rotary paper cutting device according to any one of claims 1 to 7, characterized in that: The paper cutting assembly includes a paper pressing roller and a paper pressing elastic element. The paper pressing roller is movably mounted on the upper support and rolls adjacent to the upper surface of the paper feeding end face. The paper pressing elastic element is connected to the paper pressing roller and applies a paper pressing force toward the paper feeding end face to the paper pressing roller.

9. The rotary paper cutting device according to claim 8, characterized in that: The paper cutting assembly includes two paper pressing rollers and a paper pressing bracket. The axial direction of the paper pressing rollers is parallel to the horizontal paper length direction. The two paper pressing rollers are arranged along the horizontal paper length direction and rotatably mounted on the paper pressing bracket. The paper pressing bracket is connected to the upper bracket. The paper pressing elastic element is connected to the paper pressing bracket. One paper pressing roller rolls adjacent to the paper feeding end face on the front side of the groove, and the other paper pressing roller rolls adjacent to the paper feeding end face on the rear side of the groove.

10. A printer, characterized in that, Includes the rotary paper cutting device as described in any one of claims 1 to 9 above.

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