Printer roller and printer

Abstract

The utility model relates to the technical field of printing equipment, in particular to a printer roller and a printer, the printer roller comprises an outer gear ring, a heat conduction pipe and a rubber cylinder; the inner wall of the outer gear ring is connected with a heat conduction pipe, the outer side of the heat conduction pipe is sleeved with a rubber cylinder, the rear portion of the outer gear ring is connected with a heat dissipation mechanism, the inner wall of the heat conduction pipe is connected with a heat conduction piece, and a limiting mechanism is arranged in the heat conduction piece. According to the printer roller, the fan blades are driven to rotate through the outer gear ring, air is fed into the heat conduction pipe, heat on the heat conduction pipe and the heat conduction piece is driven to be discharged out of the dustproof cover, and then the printer roller assists in heat dissipation; the multi-section two-way threaded rod is rotated to retract the inserting plate into the heat conduction pipe, the rubber cylinder is taken down, the rubber cylinder needing to be replaced is connected to the outer side of the heat conduction pipe in a sleeving mode, then the multi-section two-way threaded rod is reversely rotated to push the inserting plate to be inserted into the inserting groove, the rubber cylinder is fixed to the outer side of the heat conduction pipe, and then the printer roller is prevented from slipping.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a printer roller and a printer. Background Technique

[0002] A printer is one of the output devices of a computer, used to print the processing results of the computer on relevant media. The printer roller relies on the friction between the rubber roller and the paper to take out the paper and complete the printing and paper output. There are still certain defects in the existing printer rollers when in use, such as;

[0003] The existing printer roller is usually a solid roller shaft, and a rubber cylinder is installed on the outside through glue. When printing for a long time, the heat generated on the printing paper and the heat generated by the friction between the paper and the rubber cylinder accumulate continuously. The thermal expansion effect causes the deformation of the structural parts, thus causing paper jams and insensitive printing. The heat dissipation effect is poor, and when used in a high-temperature environment for a long time, the glue is likely to fail, and then the rubber cylinder slips, resulting in paper jams. Content of the Utility Model

[0004] The purpose of the utility model is to provide a printer roller and a printer to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A printer roller, comprising: an external gear ring, a heat conduction tube and a rubber cylinder;

[0006] The inner wall of the external gear ring is connected with a heat conduction tube, the outside of the heat conduction tube is sleeved with a rubber cylinder, the rear part of the external gear ring is connected with a heat dissipation mechanism, the inner wall of the heat conduction tube is connected with heat conduction fins, and a limiting mechanism is arranged inside the heat conduction fins;

[0007] The heat dissipation mechanism includes: an internal gear ring, an L-shaped plate, a first roller, a driven gear, a dust-proof net, a second roller, a belt, a fan blade, an air inlet, a dust-proof cylinder and a dust-proof cover. The rear part of the external gear ring is connected with an internal gear ring through screws. An L-shaped plate is arranged at the rear part of the internal gear ring. A first roller is rotatably penetrated through the L-shaped plate. The front part of the first roller is connected with a driven gear, and the driven gear is meshed and connected inside the internal gear ring.

[0008] Preferably, a dust-proof net is connected to the inner wall of one end of the heat conduction tube close to the external gear ring, a second roller is rotatably penetrated through the dust-proof net, and the second roller is rotatably connected to one side of the heat conduction fin;

[0009] The second roller is rotatably penetrated through the L-shaped plate, and a belt is sleeved on the outside of the second roller, and the belt is sleeved on the outside of the first roller.

[0010] Preferably, a fan blade is connected to the outer side of the second roller away from the belt, and the fan blade is arranged inside the heat conduction tube.

[0011] Preferably, an air inlet is formed in the outer side of the heat conduction tube, a dust-proof cylinder is connected to the outer side of the heat conduction tube, and a dust-proof cover is connected to one end of the heat conduction tube away from the external toothed ring.

[0012] Preferably, the limiting mechanism includes: a multi-section bidirectional threaded rod, a slider, a slot, a plug board and a transmission board. The multi-section bidirectional threaded rod penetrates and rotates inside the heat conduction fin, the multi-section bidirectional threaded rod penetrates and rotates inside the dust-proof cover, and the slider is threadedly connected to the outer side of the multi-section bidirectional threaded rod.

[0013] Preferably, slots are formed in the inner wall of the rubber cylinder, a plug board is clamped in the slots, and the plug board penetrates and slides on the inner wall of the heat conduction tube.

[0014] Preferably, one end of the plug board away from the slot is rotatably connected to a transmission board, and the other end of the transmission board is rotatably connected to the slider.

[0015] A printer, comprising: a printer body, and the above-mentioned printer roller is installed on the printer body.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: for this printer roller, the external toothed ring drives the fan blade to rotate, sending air into the heat conduction tube, driving the heat on the heat conduction tube and the heat conduction fin to be discharged from the dust-proof cover, thereby enabling the printer roller to assist in heat dissipation; by rotating the multi-section bidirectional threaded rod to retract the plug board into the heat conduction tube, removing the rubber cylinder, sleeving the rubber cylinder to be replaced on the outer side of the heat conduction tube, and then reversely rotating the multi-section bidirectional threaded rod to drive the transmission board to rotate between the slider and the plug board, pushing the plug board into the slot to fix the rubber cylinder on the outer side of the heat conduction tube, thereby enabling the printer roller to prevent slipping. The specific content is as follows:

[0017] 1. The external toothed ring drives the internal toothed ring to rotate, the internal toothed ring drives the driven gear to drive the first roller to rotate, the first roller drives the second roller to rotate, driving the fan blade to rotate, filtering the air through the dust-proof net and the dust-proof cylinder, and entering the heat conduction tube, driving the heat on the heat conduction tube and the heat conduction fin, thereby enabling the printer roller to assist in heat dissipation;

[0018] 2. By rotating the multi-section bidirectional threaded rod to retract the plug board into the heat conduction tube, removing the rubber cylinder, sleeving the rubber cylinder to be replaced on the outer side of the heat conduction tube, and then rotating the multi-section bidirectional threaded rod to drive the transmission board to rotate between the slider and the plug board, pushing the plug board into the slot to fix the rubber cylinder on the outer side of the heat conduction tube, thereby enabling the printer roller to prevent slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic cross-sectional view of the main view of the printer body of the present utility model;

[0020] Figure 2 This is a schematic side view structure diagram of the printer body of the present utility model;

[0021] Figure 3 This is a schematic side view structure diagram of the rubber cylinder of the present utility model;

[0022] Figure 4 This is a schematic three - dimensional structure diagram of the rubber cylinder of the present utility model;

[0023] Figure 5 This is a schematic front - view cross - section structure diagram of the heat - conducting tube of the present utility model;

[0024] Figure 6 This is a schematic three - dimensional structure diagram of the heat - conducting tube of the present utility model;

[0025] Figure 7 This is a schematic three - dimensional structure diagram of the internal toothed ring of the present utility model;

[0026] Figure 8 This is a schematic three - dimensional structure diagram of the slider of the present utility model.

[0027] In the figure: 1. Printer body; 2. External toothed ring; 3. Heat - conducting tube; 4. Rubber cylinder; 5. Heat - dissipation mechanism; 501. Internal toothed ring; 502. L - shaped plate; 503. First roller; 504. Driven gear; 505. Dust - proof net; 506. Second roller; 507. Belt; 508. Fan blade; 509. Air inlet; 510. Dust - proof cylinder; 511. Dust - proof cover; 6. Heat - conducting sheet; 7. Limiting mechanism; 701. Multi - joint bidirectional threaded rod; 702. Slider; 703. Slot; 704. Inserted plate; 705. Transmission plate. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1-7, the present utility model provides a technical solution: a printer roller, comprising: an external toothed ring 2, a heat conduction tube 3 and a rubber cylinder 4; a heat conduction tube 3 is connected to the inner wall of the external toothed ring 2, a rubber cylinder 4 is sleeved outside the heat conduction tube 3, a heat dissipation mechanism 5 is connected to the rear part of the external toothed ring 2, a heat conduction sheet 6 is connected to the inner wall of the heat conduction tube 3, and a limiting mechanism 7 is arranged inside the heat conduction sheet 6; the heat dissipation mechanism 5 comprises: an internal toothed ring 501, an L-shaped plate 502, a first belt roller 503, a driven gear 504, a dust-proof net 505, a second belt roller 506, a belt 507, a fan blade 508, an air inlet 509, a dust-proof cylinder 510 and a dust-proof cover 511. The rear part of the external toothed ring 2 is connected with the internal toothed ring 501 by screws, the rear part of the internal toothed ring 501 is provided with the L-shaped plate 502, the first belt roller 503 is rotatably penetrated through the inside of the L-shaped plate 502, the front part of the first belt roller 503 is connected with the driven gear 504, the driven gear 504 is meshed and connected inside the internal toothed ring 501, a dust-proof net 505 is connected to the inner wall of the heat conduction tube 3 near one end of the external toothed ring 2, the second belt roller 506 is rotatably penetrated through the dust-proof net 505, and the second belt roller 506 is rotatably connected to one side of the heat conduction sheet 6; the second belt roller 506 is rotatably penetrated through the L-shaped plate 502, and a belt 507 is sleeved outside the second belt roller 506, the belt 507 is sleeved outside the first belt roller 503, a fan blade 508 is connected to the outside of the second belt roller 506 far away from the belt 507, the fan blade 508 is arranged inside the heat conduction tube 3, an air inlet 509 is opened on the outside of the heat conduction tube 3, and a dust-proof cylinder 510 is connected to the outside of the heat conduction tube 3, and a dust-proof cover 511 is connected to one end of the heat conduction tube 3 far away from the external toothed ring 2.

[0030] During specific implementation, the external toothed ring 2 drives the internal toothed ring 501 to rotate, the internal toothed ring 501 drives the driven gear 504 to drive the first belt roller 503 to rotate, the first belt roller 503 drives the second belt roller 506 to rotate through the belt 507, drives the fan blade 508 to rotate, filters the air through the dust-proof net 505 and the dust-proof cylinder 510, enters the heat conduction tube 3 from the internal toothed ring 501 and the air inlet 509, drives the heat on the heat conduction tube 3 and the heat conduction sheet 6, and discharges from the dust-proof cover 511 to assist in heat dissipation of the printer roller.

[0031] Refer to Figure 1 , Figure 5 , Figure 7 and Figure 8It can be seen that the limiting mechanism 7 includes: a multi-section bidirectional threaded rod 701, a slider 702, a slot 703, a plug board 704, and a transmission plate 705. The multi-section bidirectional threaded rod 701 penetrates and rotates inside the heat conducting fin 6. The multi-section bidirectional threaded rod 701 penetrates and rotates inside the dust-proof cover 511. The outer side of the multi-section bidirectional threaded rod 701 is threadedly connected with the slider 702. Slots 703 are opened on the inner wall of the rubber cylinder 4. The plug board 704 is engaged in the slot 703. The plug board 704 penetrates and slides on the inner wall of the heat conducting tube 3. One end of the plug board 704 away from the slot 703 is rotatably connected to the transmission plate 705. The other end of the transmission plate 705 is rotatably connected to the slider 702.

[0032] During specific implementation, rotate the multi-section bidirectional threaded rod 701 to retract the plug board 704 into the heat conducting tube 3, remove the rubber cylinder 4, sleeved the rubber cylinder 4 to be replaced on the outside of the heat conducting tube 3, and then rotate the multi-section bidirectional threaded rod 701 in the reverse direction to drive two adjacent sliders 702 to move in opposite directions, drive the transmission plate 705 to rotate between the slider 702 and the plug board 704, push the plug board 704 to extend from the heat conducting tube 3, insert it into the slot 703, and fix the rubber cylinder 4 on the outside of the heat conducting tube 3 to prevent the printer roller from slipping.

[0033] A printer includes: a printer body 1, and the above-mentioned printer roller is installed on the printer body 1.

[0034] In summary: when using the printer roller and the printer, first, install the printer roller in the printer body 1, fix the L-shaped plate 502 in the printer body 1 with screws, connect the printer body 1 to a mobile phone or a computer, upload the document to be printed for printing. During printing, the driving wheel in the printer body 1 drives the external gear ring 2 to rotate, drives the rubber cylinder 4 to push out the printed paper. The heat on the paper is conducted to the heat conducting tube 3 and the heat conducting fin 6. When the external gear ring 2 rotates, it drives the fan blade 508 to rotate. The outside air is filtered through the dust-proof net 505 and the dust-proof cylinder 510 and enters the heat conducting tube 3 to take away the heat on the heat conducting tube 3 and the heat conducting fin 6, and is discharged to the outside from the dust-proof cover 511. When the heat conducting tube 3 is worn and needs to be replaced, rotate the multi-section bidirectional threaded rod 701, pull out the rubber cylinder 4, then sleeved the rubber cylinder 4 to be replaced on the outside of the heat conducting tube 3 and rotate the multi-section bidirectional threaded rod 701 in the reverse direction to fix the rubber cylinder 4 on the heat conducting tube 3 to prevent the rubber cylinder 4 from idling and slipping. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0035] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A printer roller, comprising: External gear ring (2), heat conduction tube (3) and rubber cylinder (4), characterized in that; A heat conduction tube (3) is connected to the inner wall of the external gear ring (2), a rubber cylinder (4) is sleeved outside the heat conduction tube (3), a heat dissipation mechanism (5) is connected to the rear of the external gear ring (2), a heat conduction fin (6) is connected to the inner wall of the heat conduction tube (3), and a limiting mechanism (7) is arranged inside the heat conduction fin (6); The heat dissipation mechanism (5) includes: an internal gear ring (501), an L-shaped plate (502), a first belt roller (503), a driven gear (504), a dust-proof net (505), a second belt roller (506), a belt (507), a fan blade (508), an air inlet (509), a dust-proof cylinder (510) and a dust-proof cover (511). The rear of the external gear ring (2) is connected with the internal gear ring (501) by screws. An L-shaped plate (502) is arranged at the rear of the internal gear ring (501). A first belt roller (503) is rotatably penetrated through the L-shaped plate (502). A driven gear (504) is connected to the front of the first belt roller (503). The driven gear (504) is meshed and connected inside the internal gear ring (501).

2. A printer roller according to claim 1, characterized in that: A dust-proof net (505) is connected to the inner wall of one end of the heat conduction tube (3) close to the external gear ring (2). A second belt roller (506) is rotatably penetrated through the dust-proof net (505). The second belt roller (506) is rotatably connected to one side of the heat conduction fin (6); The second belt roller (506) is rotatably penetrated through the L-shaped plate (502), and a belt (507) is sleeved outside the second belt roller (506). The belt (507) is sleeved outside the first belt roller (503).

3. A printer roller according to claim 2, characterized in that: A fan blade (508) is connected to the outside of the second belt roller (506) far from the belt (507). The fan blade (508) is arranged inside the heat conduction tube (3).

4. A printer roller according to claim 1, characterized in that: An air inlet (509) is arranged on the outside of the heat conduction tube (3), and a dust-proof cylinder (510) is connected to the outside of the heat conduction tube (3). A dust-proof cover (511) is connected to one end of the heat conduction tube (3) far from the external gear ring (2).

5. A printer roller according to claim 4, characterized in that: The limiting mechanism (7) includes: a multi-section bidirectional threaded rod (701), a slider (702), a slot (703), a plug board (704) and a transmission board (705). A multi-section bidirectional threaded rod (701) is rotatably penetrated through the heat conduction fin (6). The multi-section bidirectional threaded rod (701) is rotatably penetrated through the dust-proof cover (511), and a slider (702) is threadedly connected to the outside of the multi-section bidirectional threaded rod (701).

6. A printer roller according to claim 5, characterized in that: Slots (703) are formed on the inner wall of the rubber cylinder (4). Plug boards (704) are clamped in the slots (703). The plug boards (704) are slidably penetrated through the inner wall of the heat conduction tube (3).

7. A printer roller according to claim 6, wherein: One end of the plug board (704) far from the slot (703) is rotatably connected to a transmission board (705). The other end of the transmission board (705) is rotatably connected to the slider (702).

8. A printer, comprising: Printer body (1), characterized in that: the printer body (1) is installed with a printer roller as described in any one of claims 1-7.

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