Drum core structure of photoconductive drum of printing equipment

Abstract

The invention discloses a photoconductive drum core structure of printing equipment, which comprises a plurality of photoconductive drums and rotating ends arranged at the two ends of the photoconductive drums, and further comprises two carrying discs, two rotating discs and a driving structure, round holes are formed in the centers of the carrying discs, bearings are arranged in the round holes, the two rotating discs respectively penetrate through the two bearings, the photoconductive drums are arranged, and the driving structure is arranged between the two rotating discs. The plurality of photoconductor drums are arranged between the two rotating discs, the rotating ends of the photoconductor drums penetrate through the rotating discs, and the driving structure drives the two rotating discs to rotate. The drum core structure is provided with a plurality of photoconductor drums, and when one photoconductor drum is damaged, the next new photoconductor drum can be quickly switched, so that the situation that normal work is affected due to sudden damage of the photoconductor drum in printing equipment is avoided, and manual operation and replacement are not needed.

Description

Technical Field

[0001] This invention relates to the field of optical drum technology, specifically to an optical drum core structure for a printing device. Background Technology

[0002] The "drum core" of the photoconductor drum usually refers to the "photoconductor drum" itself, which is the most core and critical imaging component in laser printers, copiers and other equipment. The photoconductor drum is also often called the photosensitive drum or OPC drum (organic photoconductor drum). It is a precision component with photoconductor materials (such as selenium, silicon, organic compounds, etc.) coated on an aluminum alloy round tube.

[0003] Current printing equipment is equipped with a photoconductor drum, and printers generally do not indicate the remaining lifespan of the photoconductor drum. For some large printing equipment, if the photoconductor drum is suddenly damaged, it will delay work and be quite troublesome to replace. If the replacement is not done properly, it may cause irreparable damage to the photoconductor drum.

[0004] Therefore, in order to correct the above-mentioned defects, we propose a light guide drum core structure for a printing device. Summary of the Invention

[0005] The technical problem solved by this invention is to propose a light-guiding drum core structure for a printing device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a photoconductor drum core structure for a printing device, comprising a photoconductor drum and rotating ends mounted at both ends of the photoconductor drum, further comprising two carrier disks, two turntables and a drive structure, wherein a circular hole is provided at the center of the carrier disk, and a bearing is installed in the circular hole, and the two turntables respectively pass through the two bearings, wherein a plurality of photoconductor drums are provided, and the plurality of photoconductor drums are all installed between the two turntables, the rotating ends of the photoconductor drums pass through the turntables, and the drive structure drives the two turntables to rotate.

[0007] Furthermore, the drive structure includes a gear ring mounted on one end of the turntable extending to the outside of the turntable, with a gear meshing at the top of the gear ring, and the gear being connected to a drive motor.

[0008] Furthermore, a notch is provided on one side of the carrier disk, and among the several photoconductor drums, the photoconductor drum used for preparing for printing is located within the notch.

[0009] Furthermore, the turntable is provided with channels corresponding to several photoconductor drums. A cylinder is installed between two turntables. A reciprocating lead screw and a guide rod are installed in the channel. The lead screw nut of the reciprocating lead screw and the slider on the guide rod are connected to a clamping frame. The clamping frame is sleeved between the photoconductor drum and the rotating end through a bearing. The cylinder is equipped with a lead screw drive device.

[0010] Furthermore, the lead screw drive device includes a motor installed inside a cylinder, a drive shaft connected to the drive end of the motor, a gear disk connected to the drive shaft, the gear disk being located inside a turntable, an extension lead screw connected to the lead screw of the reciprocating lead screw, a bevel gear connected to the end of the extension lead screw, and the bevel gear meshing with the gear disk.

[0011] Furthermore, the drive shaft is fitted with a bearing, which is suspended inside the cylinder by a tie rod.

[0012] Furthermore, a bearing is sleeved on the outside of the portion of the extension screw that passes through the turntable.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the drum core structure of the present invention is equipped with several photoconductor drums. When one of the photoconductor drums is damaged, a new photoconductor drum can be quickly switched to it. This avoids the photoconductor drum in the printing equipment from being damaged and affecting normal operation, and there is no need to manually operate and replace it. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0015] Figure 2 Side view of the structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the reciprocating lead screw structure in this invention;

[0017] Figure 4 This is a schematic diagram of the lead screw drive device in this invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a technical solution:

[0020] Please see Figure 1-4 A photoconductor drum core structure for a printing device includes a photoconductor drum 4 and rotating ends 5 installed at both ends of the photoconductor drum 4. It also includes two carrier disks 1, two turntables 2 and a drive structure. A circular hole is opened at the center of the carrier disk 1, and a bearing is installed in the circular hole. The two turntables 2 pass through the two bearings respectively. A plurality of photoconductor drums 4 are provided, and the plurality of photoconductor drums 4 are installed between the two turntables 2. The rotating ends 5 of the photoconductor drum 4 pass through the turntables 2. The drive structure drives the two turntables 2 to rotate.

[0021] A notch 10 is provided on one side of the carrier disk 1. Among the several photoconductor drums 4, the photoconductor drum 4 used for preparing for printing is located inside the notch 10. The transfer roller 23, charging roller 22, and developing roller 21 of the printing equipment are all located inside or outside the notch 10. When the photoconductor drum 4 located inside the notch 10 is damaged, the drive structure is activated. The drive structure drives the two carrier disks 1 to rotate clockwise. At this time, the photoconductor drum 10 located inside the notch 10 rotates with the turntable 2 and gradually moves out of the notch 10. Then, the new photoconductor drum 4 on the rear side enters the notch and works in conjunction with the transfer roller 23, charging roller 22, and developing roller 21.

[0022] The entire drum core structure is installed in the printing device via two carrier disks 1. The photoconductor drum 4 and the rotating end head 5 installed at both ends of the photoconductor drum 4 are consistent with the photoconductor drum in the prior art. When the new photoconductor drum 4 switches into the notch 10, it meshes with the drive end of the photoconductor drum drive device.

[0023] The drive structure includes a gear ring 7 installed on one end of the turntable 2 that extends to the outside of the turntable 2. A gear 8 is meshed with the top of the gear ring 7. The gear 8 is connected to a drive motor 6, which drives the turntable 2 to rotate.

[0024] In order to prevent the photoconductor drum 4 from being obstructed by the transfer roller 23, charging roller 22, developing roller 21, and the drive end of the photoconductor drum drive device when switching, the photoconductor drum 4 needs to be slightly retracted towards the center of the turntable 2 before switching to make room for switching, as follows:

[0025] The turntable 2 is provided with channels 12 corresponding to several light guide drums 4. A cylinder 9 is installed between the two turntables 2. A reciprocating screw 15 and a guide rod 14 are installed in the channel 12. The screw nut of the reciprocating screw 15 and the slider on the guide rod 14 are connected to a clamping frame 13. The clamping frame 13 is sleeved between the light guide drum 4 and the rotating end 5 through a bearing. The cylinder 9 is equipped with a screw drive device.

[0026] That is, under the action of the lead screw drive device, the lead screw rotates, and under the action of the guide rod 14, the lead screw nut and the slider on the guide rod 14 together drive the clamping frame 13 to move into the channel 12. Similarly, the next new light guide drum 4 that needs to be switched into the notch 10 also performs this operation synchronously. When the new light guide drum 4 enters the notch 10, the light guide drum 4 moves in the opposite direction until it engages with the drive end of the light guide drum drive device.

[0027] The reciprocating lead screw 15 mentioned above is a known moving part.

[0028] The lead screw drive device includes a motor 19 installed inside the cylinder 9, a drive shaft 20 connected to the drive end of the motor 19, a gear disk 11 connected to the drive shaft 20, the gear disk 11 being located inside the turntable 2, an extension lead screw 17 connected to the lead screw 15, a bevel gear 18 connected to the end of the extension lead screw 16, and the bevel gear 18 meshing with the gear disk 11.

[0029] That is, the motor 19 drives the gear disk 11 to rotate through the drive shaft 20, the gear disk 11 drives the bevel gear 18 to rotate, and the bevel gear 18 drives the extension screw 17 and the reciprocating screw 15 to rotate.

[0030] Furthermore, the drive shaft 20 is fitted with a bearing, which is suspended inside the cylinder 9 by a tie rod to ensure the stability of the drive shaft 20.

[0031] Furthermore, the portion of the extension screw 17 that passes through the turntable 2 is fitted with a bearing to prevent wear.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photoconductor drum core structure for a printing device, comprising a photoconductor drum (4) and rotating ends (5) mounted at both ends of the photoconductor drum (4), characterized in that: It also includes two carrier disks (1), two turntables (2) and a drive structure. A circular hole is opened at the center of the carrier disk (1), and a bearing is installed in the circular hole. The two turntables (2) pass through the two bearings respectively. Several light guide drums (4) are provided, and several light guide drums (4) are installed between the two turntables (2). The rotating end (5) of the light guide drum (4) passes through the turntable (2). The drive structure drives the two turntables (2) to rotate.

2. The photoconductive drum core structure of the printing device according to claim 1, characterized in that: The drive structure includes a gear ring (7) installed on the turntable (2) extending to one end outside the turntable (2), with a gear (8) meshing on the top of the gear ring (7), and a drive motor (6) connected to the gear (8).

3. The photoconductive drum core structure of the printing device according to claim 1, characterized in that: The carrier disk (1) has a notch (10) on one side, and among the several photoconductor drums (4), the photoconductor drum (4) used for preparing for printing is located inside the notch (10).

4. The photoconductive drum core structure of the printing device according to claim 1, characterized in that: The turntable (2) is provided with channels (12) corresponding to several light guide drums (4). A cylinder (9) is installed between the two turntables (2). A reciprocating screw (15) and a guide rod (14) are installed in the channel (12). The screw nut of the reciprocating screw (15) and the slider on the guide rod (14) are connected to a clamping frame (13). The clamping frame (13) is sleeved between the light guide drum (4) and the rotating end (5) through a bearing. The cylinder (9) is equipped with a screw drive device.

5. The photoconductive drum core structure of the printing device according to claim 4, characterized in that: The lead screw drive device includes a motor (19) installed inside a cylinder (9), a drive shaft (20) connected to the drive end of the motor (19), a gear disk (11) connected to the drive shaft (20), the gear disk (11) being located inside a turntable (2), an extension lead screw (17) connected to the lead screw (15), a bevel gear (18) connected to the end of the extension lead screw (16), and the bevel gear (18) meshing with the gear disk (11).

6. The photoconductive drum core structure of the printing device according to claim 5, characterized in that: The drive shaft (20) is fitted with a bearing, which is suspended inside the cylinder (9) by a tie rod.

7. The photoconductive drum core structure of the printing device according to claim 5, characterized in that: The extension screw (17) has a bearing sleeved on the outside of the portion that passes through the turntable (2).

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