Paper pickup wheel of laser printer

Abstract

The utility model relates to the technical field of laser printers, in particular to a pickup roller of a laser printer, which comprises a pickup roller rotationally arranged in the printer and a support frame fixedly arranged in the printer, and further comprises two cleaning parts oppositely hinged on the support frame, the cleaning part is used for cleaning dust and impurities attached to the surface of the pickup roller and comprises a long rocker arm hinged to the supporting frame. Through mutual cooperation of the transmission piece and the linkage piece, a small part of power for driving the pickup roller to rotate can be used for driving the brush strip to swing in a reciprocating mode, so that the brush strip can synchronously clean the surface of the pickup roller when the pickup roller runs, dust attached to the surface of the pickup roller and plant fibers falling off from paper can be removed in time, and the service life of the pickup roller is prolonged. Friction force between the pickup roller and paper is prevented from being affected, and the frequency of slipping of the pickup roller in the long-time pickup process is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser printer technical field especially relates to a kind of paper rubbing wheel of laser printer. BACKGROUND

[0002] Paper rubbing wheel is one of important components in printer to transport single paper from paper stack into printer, and paper rubbing wheel has plant fiber on paper and dust in air attached to its surface in long time frequent paper rubbing process, if not cleaned in time, it is easy to appear skidding jam in paper rubbing.

[0003] To solve the above technical problem, the existing patent 202121617660.6 discloses a printer paper rubbing wheel with cleaning function, the cleaning brush in the device can sweep the dust and impurities on the surface of the paper rubbing wheel during the process of rotating and rubbing paper, and the fan will cause airflow to flow into the rectangular frame, so as to bring the dust and impurities into the dust collection box for easy cleaning and collection. In the above prior art, since the dust inlet is hidden in the cleaning brush, the dust and impurities removed by the cleaning brush are difficult to pass through the bristles and the dust inlet under the action of negative pressure suction, so that the dust accumulates between the bristles of the cleaning brush, affecting the cleaning effect. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a paper rubbing wheel of laser printer to solve the problem that the dust and impurities removed by the cleaning brush are difficult to pass through the bristles and the dust inlet under the action of negative pressure suction, so that the dust accumulates between the bristles of the cleaning brush, affecting the cleaning effect.

[0005] To achieve the above purpose, the utility model provides a paper rubbing wheel of laser printer, which comprises a paper rubbing wheel rotatingly arranged in a printer and a support frame fixedly arranged in the printer, and further comprises:

[0006] Two cleaning parts hingedly connected to the support frame, the cleaning parts are used for cleaning dust and impurities attached to the surface of the paper rubbing wheel, and the cleaning parts comprise long swing arms hingedly connected to the support frame.

[0007] The paper rubbing wheel of laser printer further comprises:

[0008] A worm rotatingly arranged on the support frame.

[0009] A transmission member used for linkage rotation between the paper rubbing wheel and the worm.

[0010] A linkage member arranged between the worm and the two long swing arms, the linkage member is used for indirectly driving the two long swing arms to synchronously reciprocate and deflect.

[0011] Preferably, the cleaning parts further comprise short swing arms hingedly connected to the support frame.

[0012] A first connecting rod hinged between the long rocker arm and the short rocker arm.

[0013] A brush strip hinged on the first connecting rod.

[0014] Preferably, the bottom of the brush strip is in contact with the top of the paper feeding wheel, and the brush strip is located between the long rocker arm and the short rocker arm.

[0015] Preferably, the paper feeding wheel of the laser printer further comprises:

[0016] A collection box fixed in the support frame, both ends of the collection box are provided with air holes, and a dust suction part is arranged in the collection box, so that the dust falling can be adsorbed into the collection box.

[0017] Preferably, the top of the collection box is designed as an opening, and the collection box is located between the paper feeding wheel and the support frame.

[0018] Preferably, the linkage comprises a worm gear rotatably arranged at the top of the collection box, and the gear groove of the worm gear is engaged with the thread of the worm.

[0019] A second connecting rod hinged between the remaining ends of the two long rocker arms.

[0020] A connecting arm hinged at the midpoint of the second connecting rod, and the other end of the connecting arm is fixed on the worm gear.

[0021] Preferably, the dust suction part comprises a support arm fixedly inserted between the inside and outside of the collection box, one end of the worm is rotatably sleeved on one end of the support arm, and the remaining end of the support arm is rotatably provided with a turbo shaft, and a power transmission part for linkage rotation between the turbo shaft and the worm is arranged.

[0022] Preferably, the structure of the transmission part is the same as that of the power transmission part, the transmission part comprises a driving wheel fixed to one end of the paper feeding wheel and a driven wheel fixed to one end of the worm, and a belt is sleeved between the driving wheel and the driven wheel.

[0023] The utility model discloses the beneficial effects of:

[0024] The utility model discloses a through the mutual cooperation of transmission part and linkage spare, can utilize the little power of driving paper rubbing wheel rotation, realize the reciprocating swing action of driving brush bar, can clean the surface of paper rubbing wheel when paper rubbing wheel operation, can remove the plant fibre that falls off on the dust and paper of paper rubbing wheel surface in time, avoid the influence of the friction between paper rubbing wheel and paper, effectively reduce the number of paper rubbing wheel skidding in long time paper rubbing process, and under the power transmission of power transmission spare, also will link paper rubbing wheel and the vortex fan shaft, make the vortex fan shaft and paper rubbing wheel simultaneous operation, and make the vortex fan shaft discharge the air in the collecting box from the air hole on the end face of collecting box, make the negative pressure airflow of brush bar and collecting box between formation flow to the inside of collecting box, to the dust and plant fibre that brush bar sweeps in collecting box in order to avoid the dust and plant fibre in the other space of drifting in the inside of printer, and influence the printing effect of printer. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to make the technical scheme of the utility model or the prior art clearer, the following will briefly introduce the drawings needed in the embodiment or the prior art description, obviously, the drawings in the following description are only the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0026] Figure 1 For the three-dimensional schematic diagram of the utility model Figure One ;

[0027] Figure 2 For the three-dimensional schematic diagram of the utility model Figure Two ;

[0028] Figure 3 For the three-dimensional schematic diagram of the utility model Figure Three ;

[0029] Figure 4 For the three-dimensional schematic diagram of the utility model Figure Four .

[0030] Marked as in the drawing:

[0031] 1, paper rubbing wheel, 2, support frame, 3, worm, 4, transmission part, 5, cleaning part, 51, long swing arm, 52, short swing arm, 53, first connecting rod, 54, brush bar, 6, linkage spare, 61, second connecting rod, 62, connecting arm, 63, worm wheel, 7, collecting box, 8, dust collection part, 81, support arm, 82, vortex fan shaft, 83, power transmission spare. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following will be further detailed to the utility model in combination with specific embodiment.

[0033] It should be noted that, unless otherwise defined, technical or scientific terms used in the present application should be understood as having the common meaning in the field of the present application to which they belong. The terms "first", "second" and similar terms used in the present application do not denote any order, number or importance, but are only used to distinguish different components. The terms "comprise", "include" and similar terms mean that the elements or objects before the term encompass the elements or objects listed after the term and their equivalents, without excluding other elements or objects. The terms "connected" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0034] As shown in Figures 1 to 4 A paper roller of a laser printer, comprising a paper roller 1 rotatably arranged in the printer and a support frame 2 fixedly arranged in the printer, the paper roller of the laser printer further comprises:

[0035] Two cleaning parts 5 are hingedly arranged on the support frame 2, the cleaning parts 5 are used to clean dust and impurities attached to the surface of the paper roller 1, and the cleaning parts 5 comprise long swing arms 51 hingedly arranged on the support frame 2.

[0036] The paper roller of the laser printer further comprises:

[0037] A worm 3 rotatably arranged on the support frame 2.

[0038] A transmission member 4 for linkage rotation between the paper roller 1 and the worm 3.

[0039] A linkage member 6 arranged between the worm 3 and the two long swing arms 51, the linkage member 6 is used to indirectly drive the two long swing arms 51 to reciprocate and deflect synchronously.

[0040] Through power transmission of the transmission member 4, the worm 3 can be driven to rotate simultaneously under the condition that the paper roller 1 rotates, and through power transmission of the linkage member 6, the rotating worm 3 can drive the cleaning parts 5 to operate, so that the cleaning parts 5 can clean the surface of the paper roller 1 in time, avoid too much dust and plant fibers on the paper to cause the paper roller 1 to slip when rolling the paper, and also avoid the dust attached to the paper roller 1 from staining the paper, thereby affecting the printing effect of the printer and improving the working time of the paper roller 1 in a single operation.

[0041] As shown in Figures 2 to 4 The cleaning part 5 further comprises a short swing arm 52 hingedly arranged on the support frame 2.

[0042] The first connecting rod 53 is hinged between the long rocker arm 51 and the flush end of the short rocker arm 52.

[0043] The brush strip 54 is hinged on the first connecting rod 53.

[0044] The bottom of the brush strip 54 is in contact with the top of the paper roller 1, and the brush strip 54 is located between the long rocker arm 51 and the short rocker arm 52.

[0045] The long rocker arm 51 reciprocates within a certain deflection angle under the linkage of the linkage 6, and synchronously swings the short rocker arm 52 and the brush strip 54 through the linkage of the first connecting rod 53, and the long rocker arm 51 and the short rocker arm 52 always keep parallel to each other, so that the brush strip 54 can clean the surface of the paper roller 1 in time, and the surface of the paper roller 1 can keep relatively high cleanliness during paper rolling, so as to avoid that dust is printed on the paper during paper rolling, and affects the subsequent printing effect.

[0046] As shown in Figures 1 to 4 , the paper roller of the laser printer further comprises:

[0047] The collecting box 7 is fixedly arranged in the support frame 2, both end faces of the collecting box 7 are provided with air holes, and the inside of the collecting box 7 is provided with a dust suction part 8, which is used for generating a negative pressure suction force in the collecting box 7, so that the swept dust can be adsorbed into the collecting box 7.

[0048] The top of the collecting box 7 is designed as an opening, and the collecting box 7 is located between the paper roller 1 and the support frame 2, so that the brush strip 54 can clean the dust and plant fibers attached to the surface of the paper roller 1 into the inside of the collecting box 7, realize centralized storage, avoid that the dust and plant fibers float everywhere in the printer, and affect the printing effect of the printer.

[0049] As shown in Figures 2 to 4 , the linkage 6 comprises a worm gear 63 rotatably arranged on the top of the collecting box 7, and the tooth groove of the worm gear 63 is engaged with the screw thread of the worm 3.

[0050] The second connecting rod 61 is hinged between the remaining one end of the two long rocker arms 51.

[0051] The connecting arm 62 is hinged at the midpoint of the second connecting rod 61, and the other end of the connecting arm 62 is fixedly arranged on the worm gear 63.

[0052] Driven by the worm gear 3, the worm wheel 63 rotates, which in turn drives the connecting arm 62 to rotate synchronously. When the worm wheel 63 rotates once, the second connecting rod 61 moves back and forth once in the axial direction of the worm gear 3. The two long rocker arms 51 then swing back and forth in sequence under the push of the second connecting rod 61, which means that the brush strip 54 scrapes the surface of the paper feed roller 1 back and forth once. In this way, with the continuous rotation of the worm wheel 63, the brush strip 54 deflects back and forth, and with the relative rotation between the paper feed roller 1 and the brush strip 54, the curved surface of the paper feed roller 1 that contacts the paper can be thoroughly cleaned, achieving a timely and long-lasting cleaning effect.

[0053] like Figures 1 to 4 As shown, the dust collection unit 8 includes a support arm 81 that is fixedly inserted between the inside and outside of the collection box 7. One end of the worm gear 3 is rotatably sleeved on one end of the support arm 81, and the remaining end of the support arm 81 is rotatably provided with a turbine shaft 82. A power transmission component 83 for linkage between the turbine shaft 82 and the worm gear 3 is provided.

[0054] The structure of the transmission component 4 is the same as that of the power transmission component 83. The transmission component 4 includes a driving wheel fixed to one end of the paper feeding wheel 1 and a driven wheel fixed to one end of the worm gear 3. A belt is sleeved between the driving wheel and the driven wheel.

[0055] Through the linkage of the transmission component 4, the worm gear 3 and the paper feed roller 1 rotate simultaneously. Then, through the linkage of the power transmission component 83, the turbine shaft 82 and the worm gear 3 rotate simultaneously. The turbine shaft can discharge the air in the collection box 7 from the air hole on the end face of the collection box 7, so that a negative pressure airflow is formed between the brush bar 54 and the collection box 7 and flows into the collection box 7. This helps to concentrate the dust and plant fibers swept by the brush bar 54 in the collection box 7, preventing the dust and plant fibers from drifting into other spaces inside the printer and affecting the printer's printing effect.

[0056] Working principle: Through the power transmission of the transmission component 4, the worm gear 3 can be driven to rotate simultaneously while the paper feed roller 1 is rotating. The worm wheel 63 rotates under the drive of the worm gear 3, and the worm wheel 63 drives the connecting arm 62 to rotate synchronously. When the worm wheel 63 rotates once, the second connecting rod 61 moves back and forth once in the axial direction of the worm gear 3. The two long rocker arms 51 then swing back and forth under the push of the second connecting rod 61, which means that the brush strip 54 scrapes the surface of the paper feed roller 1 back and forth once. In this way, with the continuous rotation of the worm wheel 63, the brush strip 54 deflects back and forth, and in conjunction with the paper feed roller 1 and the worm wheel 62, the brush strip 63 moves back and forth once in the axial direction of the worm gear 3. The relative rotation between the brush bars 54 can thoroughly clean the curved surface of the paper feed roller 1 that contacts the paper. Combined with the linkage of the power transmission component 83, the turbine shaft 82 and the worm gear 3 rotate simultaneously. The turbine shaft can discharge the air in the collection box 7 through the air holes on the end face of the collection box 7, so that a negative pressure airflow is formed between the brush bars 54 and the collection box 7 and flows into the collection box 7. This helps to concentrate the dust and plant fibers swept by the brush bars 54 in the collection box 7, preventing the dust and plant fibers from drifting into other spaces inside the printer and affecting the printer's printing effect.

[0057] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0058] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A paper feed roller for a laser printer, comprising a rotatable paper feed roller (1) disposed within the printer and a support frame (2) fixedly disposed within the printer, characterized in that, The paper feed rollers of the laser printer also include: The two cleaning sections (5) are respectively provided on the support frame (2). The cleaning section (5) is used to clean the dust and impurities attached to the surface of the paper feed roller (1). The cleaning section (5) includes a long rocker arm (51) hinged to the support frame (2). The paper feed rollers of the laser printer also include: Rotate the worm gear (3) mounted on the support frame (2); Transmission component (4) for linkage rotation between the paper feed roller (1) and the worm gear (3); A linkage (6) is provided between the worm gear (3) and the two long rocker arms (51), the linkage (6) being used to indirectly drive the two long rocker arms (51) to reciprocate synchronously.

2. The paper feed roller of the laser printer according to claim 1, characterized in that, The cleaning unit (5) also includes a short rocker arm (52) hinged to the support frame (2); A first connecting rod (53) is hinged between the flush ends of the long rocker arm (51) and the short rocker arm (52); Brush bar (54) hinged to the first connecting rod (53).

3. The paper feed roller of the laser printer according to claim 2, characterized in that, The bottom of the brush bar (54) is in contact with the top of the paper feed roller (1), and the brush bar (54) is located between the long rocker arm (51) and the short rocker arm (52).

4. The paper feed roller of the laser printer according to claim 1, characterized in that, The paper feed rollers of the laser printer also include: A collection box (7) is fixedly installed in the support frame (2). Air holes are provided on both ends of the collection box (7). A dust suction part (8) is provided inside the collection box (7). The dust suction part (8) is used to generate negative pressure suction in the collection box (7) so that the swept dust can be sucked into the collection box (7).

5. The paper feed roller of the laser printer according to claim 4, characterized in that, The top of the collection box (7) is open, and the collection box (7) is located between the paper feed roller (1) and the support frame (2).

6. The paper feed roller of the laser printer according to claim 4, characterized in that, The linkage (6) includes a worm gear (63) rotatably disposed on the top of the collection box (7), and the tooth groove of the worm gear (63) meshes with the thread of the worm (3); A second link (61) is hinged between the remaining ends of the two long rocker arms (51); A connecting arm (62) is hinged at one end to the midpoint of the second connecting rod (61), and the other end of the connecting arm (62) is fixed on the worm gear (63).

7. The paper feed roller of the laser printer according to claim 4, characterized in that, The dust collection unit (8) includes a support arm (81) that is fixedly inserted between the inside and outside of the collection box (7). One end of the worm gear (3) is rotatably sleeved on one end of the support arm (81). The remaining end of the support arm (81) is rotatably provided with a turbine shaft (82). A power transmission component (83) for linkage between the turbine shaft (82) and the worm gear (3) is provided.

8. The paper feed roller of the laser printer according to claim 7, characterized in that, The structure of the transmission component (4) is the same as that of the power transmission component (83). The transmission component (4) includes a drive wheel fixed to one end of the paper feed roller (1) and a driven wheel fixed to one end of the worm (3). A belt is sleeved between the drive wheel and the driven wheel.

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