Printer laser imaging scanning unit

Abstract

The utility model relates to the technical field of printers, in particular to a laser imaging scanning unit of a printer, which comprises a mounting frame, the mounting frame is of a U-shaped structure, an upper scanning head is fixed at the upper end of the mounting frame through a support, a turnover mechanism is arranged below the upper scanning head, and the turnover mechanism comprises a bearing, a first shaft rod, a motor and a lower scanning head. The bearing is fixedly embedded into one side of the mounting frame, and the inner ring wall of the bearing is in interference fit with a first shaft rod. The turnover mechanism is controlled by the servo motor to realize 180-degree forward and reverse rotation of the lower scanning head, the scanning end is powered off downwards when not in use, double-sided scanning is supported, a single-sided mode can be switched, the equipment applicability is improved, idle loss of the lower scanning head is avoided, and the service life is prolonged; a copper alloy conductive block contact power-on design is adopted, an overturning power-off mechanism is matched to reduce energy consumption, a built-in sponge brush automatically cleans dust on the surface of a contact during power off, power-on stability is ensured, meanwhile, the contact is covered for dust prevention, and maintenance frequency is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a printer technical field especially relates to a printer laser imaging scanning unit. BACKGROUND

[0002] Laser printer is a kind of equipment using laser technology to print, is widely used in office, education, medical field, and the printing speed of laser printer is usually faster than inkjet printer, is suitable for mass printing task.

[0003] The scanning unit of the existing laser printer is one of its core components, responsible for converting digital image data into laser beams and forming an electrostatic latent image on the surface of a photosensitive drum, but since most printers, their scanning units can only scan one side, resulting in the need for one-sided scanning and reading when both sides have content, some scanning units will set up two groups of scanning heads to cope with the situation of double-sided scanning, but when double-sided scanning heads work on one side, both scanning heads are in the open circuit state, which not only causes one of the scanning heads to work inefficiently, but also easily consumes and damages it over time.

[0004] Therefore, we provide a printer laser imaging scanning unit. UTILITY MODEL CONTENTS

[0005] The utility model aims at the technical problem existing above, provides a kind of printer laser imaging scanning unit, can carry out the scanning flip switching of single face or double face, and, can carry out the power-off protection of scanning head not used when switching, reduce the consumption loss problem of continuous opening.

[0006] Therefore, the utility model provides a kind of printer laser imaging scanning unit, including mounting bracket, the mounting bracket is U type structure, its upper end is fixed with upper scanning head by support, and the flip mechanism is arranged below the upper scanning head, the flip mechanism includes bearing, shaft rod one, motor and lower scanning head, the bearing is fixedly embedded in the inside of one side of mounting bracket, the inner ring wall of bearing is provided with shaft rod one by interference fit, one end of shaft rod one is provided with motor, and motor is servo machine type, the outer wall surface of motor is fixedly assembled with the outward side of mounting bracket by support, the inside of motor is provided with the rotating shaft for driving, and the end of rotating shaft is fixedly connected with the end of shaft rod one by coupling;

[0007] The end of shaft rod two is fixed with shaft rod two away from the end of shaft rod one of lower scanning head, and the end of shaft rod two is fixed with shaft rod two away from the end of shaft rod one of lower scanning head.

[0008] The inside of mounting bracket is fixed with limit ring by support, and the surface of limit ring and shaft rod two is rotatably sleeved.

[0009] In detail, the bottom of the mounting frame is provided with mounting holes, and at least two mounting holes are provided, and the inner wall of the mounting hole is a smooth surface or a threaded surface.

[0010] In detail, the turnover mechanism is further provided with a contact switch mechanism, the contact switch mechanism comprises a wiring seat, a conductive block one, a base, and a conductive block two, the wiring seat is fixedly penetrated on the surface of the mounting frame, the conductive block one is fixed in the interior of the wiring seat, the base is fixed on the second shaft, the conductive block two is installed on the base, and the conductive block two is arranged in close contact with the conductive block one.

[0011] In detail, the inside of the second shaft is provided with a channel one, the inside of the base is provided with a channel two, the channel one and the channel two are in communication, and the channel one is in communication with the wiring end of the lower scanning head.

[0012] In detail, one end of the conductive block two penetrates through the base and extends to the inside of the channel one, the conductive block two is fixed with a wiring column at one end in the inside of the channel one, and the wiring column is in power connection with the wiring end of the lower scanning head through a power transmission line.

[0013] In detail, the inside of the second shaft is provided with a channel one, the inside of the base is provided with a channel two, the channel one and the channel two are in communication, and the channel one is in communication with the wiring end of the lower scanning head.

[0014] In detail, the surface of the second shaft is fixedly provided with a cleaning brush seat two, the inside of the cleaning brush seat two is fixedly provided with a sponge brush two, and the end face of the sponge brush two and the end face of the conductive block two are located on the same vertical plane.

[0015] Compared with the prior art, the printer laser imaging scanning unit has the following beneficial effects:

[0016] 1. The servo motor controls the turnover mechanism to realize 180-degree forward and reverse rotation of the lower scanning head, the scanning end is powered off downward without being used, double-sided scanning is supported, single-sided mode can be switched, the applicability of the equipment is improved, the idle loss of the lower scanning head is avoided, and the service life is prolonged.

[0017] 2. The copper alloy conductive block contact power supply design is adopted, the power consumption is reduced in cooperation with the turnover power-off mechanism, the built-in sponge brush automatically cleans the dust on the surface of the contact point when power is off, the power supply stability is ensured, the contact point is covered to prevent dust, and the maintenance frequency is reduced.

[0018] The parts not involved in the device are the same as or can be realized by the prior art, the device has the advantages of simple structure and convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The utility model provides a kind of overall structure schematic view of printer laser imaging scanning unit.

[0020] Figure 2 A side structure schematic view of a laser imaging scanning unit of a printer is provided in the utility model;

[0021] Figure 3 An upper scanning head structure schematic view of a laser imaging scanning unit of a printer is provided in the utility model;

[0022] Figure 4 A channel one and channel two internal structure schematic view of a laser imaging scanning unit of a printer is provided in the utility model.

[0023] In the figure: 1, mounting frame; 11, upper scanning head; 12, mounting hole; 2, turnover mechanism; 20, bearing; 21, shaft rod one; 22, motor; 23, lower scanning head; 24, shaft rod two; 25, shaft seat; 26, limit ring; 3, contact switch mechanism; 31, wiring seat; 32, conductive block one; 33, base; 34, conductive block two; 35, channel one; 36, channel two; 37, wiring column; 38, power transmission line; 3001, cleaning seat one; 3002, sponge brush one; 3003, cleaning seat two; 3004, sponge brush two. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0025] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] Embodiment one

[0027] Reference Figures 1-4The utility model provides a printer laser imaging scanning unit, including mounting frame 1, mounting frame 1 is the U type structure, and the upper end is fixed with upper scanning head 11 through support, and the lower side of upper scanning head 11 is provided with turnover mechanism 2, and turnover mechanism 2 includes bearing 20, shaft rod one 21, motor 22 and lower scanning head 23, bearing 20 is fixedly embedded in the inside of one side of mounting frame 1, and the inner ring wall of bearing 20 is provided with shaft rod one 21 by interference fit, and one end of shaft rod one 21 is provided with motor 22, and motor 22 is servo machine type, and motor 22 is controlled by servo, and is set to alternately carry out each 180 degrees reverse rotation, and when not using lower scanning head 23, the scanning end of lower scanning head 23 can be rotated to the downward position, and is separated through conducting block one 32 and conducting block two 34, realizes the power-off work, thereby, the switching of double -sided or single -sided scanning can be carried out, and lower scanning head 23 also has certain anti -consumption protection effect, and the outer wall surface of motor 22 is fixedly assembled with the outward side of mounting frame 1 through support, and the inside of motor 22 is provided with the rotating shaft for driving, and the end of rotating shaft is fixedly connected with the end of shaft rod one 21 through coupling,

[0028] The end of lower scanning head 23 away from shaft rod one 21 is also fixed with shaft rod two 24, and the inner side of the end of mounting frame 1 away from bearing 20 is fixed with shaft seat 25, and the end of shaft rod two 24 close to mounting frame 1 is rotatably installed with the inside of shaft seat 25, and the cooperation of shaft rod two 24 and shaft seat 25 can ensure that lower scanning head 23 rotates, and the end of lower scanning head 23 away from motor 22 can also stably rotate.

[0029] The inner side of mounting frame 1 is fixed with limit ring 26 through support, and limit ring 26 is rotatably sleeved with the surface of shaft rod two 24, and limit ring 26 can assist in ensuring the stable rotation of shaft rod two 24, and limit the position of base 33 when rotating, to ensure that the contact of conducting block two 34 and conducting block one 32 is stable.

[0030] It is further explained that the bottom of mounting frame 1 is provided with mounting hole 12, and the inner wall of mounting hole 12 is smooth or threaded, and the inside point of the shell of the printer can be fixed through the cooperation of mounting hole 12 and screw or bolt.

[0031] It is further explained that the upper side of turnover mechanism 2 is also provided with contact switch mechanism 3, and contact switch mechanism 3 includes wiring seat 31, conducting block one 32, base 33 and conducting block two 34, wiring seat 31 is fixedly penetrated and installed on the surface of mounting frame 1, conducting block one 32 is fixed in the inside of wiring seat 31, base 33 is fixed on shaft rod two 24, and conducting block two 34 is installed on base 33, and conducting block two 34 is arranged in close contact with conducting block one 32, and conducting block one 32 and conducting block two 34 are both copper alloy materials, and have good power transmission capacity, and can ensure the stable operation of lower scanning head 23 when contacting, and can be powered off when separating.

[0032] Further need explanation, the inside of the shaft rod two 24 is provided with the channel one 35, the inside of the base 33 is provided with the channel two 36, the channel one 35 is communicated with the channel two 36, the channel one 35 is also communicated with the wiring end of the lower scanning head 23, through the cooperation of the channel one 35 and the channel two 36, the power supply of the lower scanning head 23 and the wiring post 37 can be realized.

[0033] Further need explanation, one end of the conductive block two 34 extends to the inside of the channel one 35 through the base 33, the end of the conductive block two 34 in the inside of the channel one 35 is fixed with the wiring post 37, the wiring post 37 is connected with the wiring end of the lower scanning head 23 through the power transmission line 38, the built-in power transmission line 38 connection structure can reduce the external setting of the line, avoid causing the space obstruction of the scanning path.

[0034] Further need explanation, the inside of the mounting bracket 1 is fixed with the cleaning brush seat one 3001, the inside of the cleaning brush seat one 3001 is fixed with the sponge brush one 3002, the end face of the sponge brush one 3002 and the end face of the conductive block one 32 are located on the same vertical plane, the sponge brush one 3002 is a fixed point structure, can rotate 180 degrees after the conductive block two 34 is powered off, wipe the surface of the conductive block two 34, avoid adhering dust, affect the power supply stability, at the same time, also can cover the contact side when not in use.

[0035] Further need explanation, the surface of the shaft rod two 24 is fixed with the cleaning brush seat two 3003, the inside of the cleaning brush seat two 3003 is fixed with the sponge brush two 3004, the end face of the sponge brush two 3004 and the end face of the conductive block two 34 are located on the same vertical plane, the sponge brush two 3004 is a movable structure, can rotate 180 degrees after the conductive block one 32 is powered off, make it slide contact with the conductive block one 32 and wipe, the cleaning effect of the sponge brush two 3004 is the same as the sponge brush one 3002.

[0036] Working principle: the scheme realizes the 180° forward and reverse rotation control of the lower scanning head 23 through the turnover mechanism 2, so as to flexibly switch the double-sided or single-sided scanning mode, when double-sided scanning is needed, the rotating shaft of the motor 22 drives the shaft rod one 21 to rotate, drives the lower scanning head 23 to turn over to the horizontal position (the scanning end faces up), at this time, the conductive block two 34 of the contact switch mechanism 3 and the conductive block one 32 are closely attached, the lower scanning head 23 is powered through the channel one 35, the channel two 36 and the wiring post 37, makes it work with the upper scanning head 11, if only single-sided scanning is needed, the motor 22 reverses 180° to place the scanning end of the lower scanning head 23 downward, the conductive block two 34 and the conductive block one 32 are separated, automatically cut off the power supply, this design not only avoids unnecessary energy consumption, but also reduces the optical element loss of the scanning head, prolongs its service life, the cooperation of the limiting ring 26 and the shaft seat 25 ensures the stability of the turnover process, and the built-in power transmission line 38 avoids the external line interference to the scanning path.

[0037] The contact switch mechanism 3 of the present scheme realizes the intelligent on-off of the lower scanning head 23 by mechanical contact and separation. The conductive block one 32 is fixed on the terminal seat 31 and connected with the external power supply. The conductive block two 34 rotates synchronously with the shaft rod two 24 through the base 33. When the conductive block two 34 contacts with the conductive block one 32, the current is conducted to the lower scanning head 23 through the copper alloy material, ensuring the stability of the scanning signal transmission. When the power is off, the two are separated to prevent current leakage in standby state. In order to maintain the cleanliness of the contacts, the sponge brush one 3002 of the cleaning brush seat one 3001 and the sponge brush two 3004 of the cleaning brush seat two 3003 play a key role. After the lower scanning head 23 is turned over by 180°, the sponge brush one 3002 wipes the surface of the conductive block two 34, and the sponge brush two 3004 reversely cleans the conductive block one 32, effectively removing the oxide layer or dust, ensuring the reliable conduction when next contact. The self-cleaning design reduces the need for manual maintenance and improves the long-term stability of the equipment.

[0038] The above merely describes the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A printer laser imaging scanning unit comprising a mounting frame (1), characterized in that: The mounting frame (1) is a U-shaped structure, the upper end of which is fixed with an upper scanning head (11) through a support, a turnover mechanism (2) is arranged below the upper scanning head (11), the turnover mechanism (2) comprises a bearing (20), a shaft rod one (21), a motor (22) and a lower scanning head (23), the bearing (20) is fixedly embedded in the inside of one side of the mounting frame (1), the inner ring wall of the bearing (20) is provided with the shaft rod one (21) in interference fit, one end of the shaft rod one (21) is provided with the motor (22), the motor (22) is a servo type, the outer wall surface of the motor (22) is fixedly assembled with the outward side of the mounting frame (1) through a support, the inside of the motor (22) is provided with a driving shaft, the end of the driving shaft is fixedly and drivably connected with the end of the shaft rod one (21) through a shaft coupling; The end of the lower scanning head (23) away from the shaft rod one (21) is also fixed with a shaft rod two (24), the inside of the end of the mounting frame (1) away from the bearing (20) is fixedly provided with a shaft seat (25), the end of the shaft rod two (24) close to the mounting frame (1) is rotatably arranged in the inside of the shaft seat (25); The inside of the mounting frame (1) is fixedly provided with a limiting ring (26) through a support, the limiting ring (26) is rotatably sleeved with the surface of the shaft rod two (24).

2. A printer laser imaging scan unit according to claim 1, wherein: The bottom of the mounting frame (1) is provided with mounting holes (12), the mounting holes (12) are at least two, and the inner wall of the mounting hole (12) is a smooth surface or a threaded surface.

3. A printer laser imaging scan unit according to claim 1, wherein: The turnover mechanism (2) is also provided with a contact switch mechanism (3), the contact switch mechanism (3) comprises a terminal block (31), a conductive block one (32), a base (33), a conductive block two (34), the terminal block (31) is fixedly and penetratively arranged on the surface of the mounting frame (1), the conductive block one (32) is fixed in the inside of the terminal block (31), the base (33) is fixed on the shaft rod two (24), the conductive block two (34) is arranged on the base (33), and the conductive block two (34) is arranged in close contact with the conductive block one (32).

4. A printer laser imaging scan unit according to claim 3, wherein: The inside of the shaft rod two (24) is provided with a channel one (35), the inside of the base (33) is provided with a channel two (36), the channel one (35) and the channel two (36) are in communication, and the channel one (35) is also in communication with the wiring end of the lower scanning head (23).

5. A printer laser imaging scan unit according to claim 4, wherein: One end of the conductive block two (34) penetrates through the base (33) and extends to the inside of the channel one (35), a terminal post (37) is fixed at one end of the conductive block two (34) in the inside of the channel one (35), and the terminal post (37) is in power connection with the wiring end of the lower scanning head (23) through a power transmission line (38).

6. A printer laser imaging scan unit according to claim 5, wherein: The inside of the mounting frame (1) is fixedly provided with a cleaning brush seat one (3001), the inside of the cleaning brush seat one (3001) is fixedly provided with a sponge brush one (3002), and the end surface of the sponge brush one (3002) is located on the same vertical plane as the end surface of the conductive block one (32).

7. A printer laser imaging scan unit according to claim 6, wherein: The surface of the shaft two (24) is fixed with the cleaning brush seat two (3003), the inside of the cleaning brush seat two (3003) is fixed with the sponge brush two (3004), the end surface of the sponge brush two (3004) and the end surface of the conductive block two (34) are located on the same vertical plane.

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