CN106585129B - Transmission mechanism for office equipment - Google Patents

Abstract

The invention provides a transmission mechanism for office equipment, including a motor, a main transmission unit, a paper take-up roller assembly, a primary paper feed roller assembly, a secondary paper feed roller assembly, a fixing roller assembly, a primary paper output roller assembly, a secondary Paper output roller assembly, automatic reversing mechanism, reverse paper support tray, photosensitive drum, transfer roller and support frame; the main drive unit and motor are fixedly connected to the sheet metal support, the main drive unit is located outside the sheet metal support, and the motor Located on the inner side of the sheet metal bracket, the motor provides power for the pick-up roller assembly, the primary paper feed roller assembly, the secondary paper feed roller assembly, the fixing roller assembly, the primary paper output roller assembly, and the secondary paper output roller assembly through the main drive unit. Operating power, the transmission mode of rotating power is mainly gear transmission. The beneficial effects of the invention are: the gear transmission has the characteristics of high-precision transmission, and the structure is compact, so that each roller group can be well matched, and the printing quality is significantly improved; the design structure is simple, easy to process and manufacture, and can effectively save production costs.

Description

Transmission mechanism for office equipment

technical field

The invention relates to the technical field of accessories for office equipment, in particular to a transmission mechanism for office equipment.

Background technique

In recent years, with the rapid development of printing technology, more and more office equipment has poured into the market. These office equipment are favored by users because of their rich functions and simple operation. At the same time, in order to improve work efficiency, people have higher and higher requirements for office equipment, especially the printing quality and printing speed, and even require double-sided printing function. Printers currently on the market mainly have two double-sided printing methods: one is that the motor always rotates forward, and the paper output transmission mechanism is forced to change direction through the relay pull-in, and the paper is introduced into the reverse paper path; the other is when the reverse is printed. Control the motor to reverse, and the motor will resume normal rotation after the paper is introduced into the reverse paper path. The first type has a simple structure and is easy to realize, but the reliability of the relay is poor, and it is accompanied by relatively large noise. The second kind of structure is complex, the manufacturing cost is high, and maintenance is not necessary, but if the structural design is reasonable, the effect is better.

It can be seen that how to develop a transmission mechanism for office equipment, which has the advantages of simple structure and low production cost, is an urgent problem to be solved by those skilled in the art.

Contents of the invention

In order to solve the above problems, the present invention provides a transmission mechanism for office equipment.

The present invention is a transmission mechanism for office equipment, comprising a motor, a main transmission unit, a paper take-up roller assembly, a primary paper feed roller assembly, a secondary paper feed roller assembly, a fixing roller assembly, a primary paper output roller assembly, a secondary output Paper roller assembly, automatic reversing mechanism, reverse paper support tray, photosensitive drum, transfer roller and support frame; the main transmission unit and the motor are fixedly connected with sheet metal brackets, and the main transmission unit is located on the The outer side of the sheet metal bracket, the motor is located on the inner side of the sheet metal bracket, and the motor provides the power for the paper take-up roller assembly, the first-stage paper feed roller assembly, the second-stage paper feed roller assembly, the fixing The roller assembly, the primary output roller assembly, and the secondary output roller assembly provide operating power;

Wherein, the transmission gears on the paper pick-up roller, the primary paper feed roller, the secondary paper feed roller, and the photosensitive drum are directly meshed with the gears in the main transmission unit, and the primary paper output The roller is meshed with the heating roller gear in the fixing roller assembly through the idler wheel, and the secondary paper output roller is meshed with the gear in the main transmission unit through the idler wheel; the other side gear of the secondary paper feeding roller is meshed with the The gear train of the automatic reversing mechanism meshes to provide power to the rollers on the reverse paper tray, the gear of the transfer roller meshes with the gear on the other side of the photosensitive drum, and the paper pickup roller assembly A friction-type paper-feeding electromagnetic clutch and a paper-feeding electromagnetic clutch are respectively provided between the paper-taking roller gear and the secondary paper-feeding roller gear.

Further, the motor is a DC brushless motor.

Further, the photosensitive drum and the heating roller in the fixing assembly are respectively driven in one direction by the gears in the transmission unit.

Further, when the paper-taking electromagnetic clutch is not engaged, the paper-taking roller gear is idling, and the paper-taking roller is stationary; when the paper-taking electromagnetic clutch is engaged, the paper-taking roller is The paper roll gear is driven to rotate.

Further, the gear of the secondary paper feeding roller is powered by the gear of the paper feeding electromagnetic clutch meshing with the gear on the main transmission unit.

A transmission mechanism for office equipment of the present invention has the following advantages compared with the prior art:

First, the main transmission mode of the present invention is a gear transmission with high-precision transmission characteristics. Its structure is compact, so that each roller group can get a good cooperation relationship, and then the printing quality can be significantly improved; secondly, the design structure is simple, and the connection The method is relatively single, is convenient for processing and manufacturing, is not prone to failure, can effectively save production costs, and is beneficial to popularization and use.

Second, the transmission mechanism can be widely used in automatic double-sided printers. When double-sided printing, first control the motor to rotate forward, control the clutch to pick up paper, and print even-numbered pages, and control the reverse direction of the motor when the paper is about to leave the secondary paper feed roller , so that the paper returns and passes through the reverse support tray, the paper is completely detached from the secondary paper feed roller, and the motor is controlled to rotate forward, and the odd-numbered pages are printed; One-way transmission design is carried out on the gear meshed with it, so that the two rollers stop when the motor turns over. Similarly, the automatic reversing mechanism is also a very important part in order to make the motor reversing not affect the rotation direction of the reverse tray roller.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of main transmission unit and motor among the present invention;

Fig. 3 is the structural representation of paper taking roller and primary paper feeding roller among the present invention;

Fig. 4 is a structural schematic diagram of the secondary paper feed roller assembly and the automatic reversing mechanism in the present invention;

Fig. 5 is a schematic structural view of the fixing roller assembly and the first-stage paper output roller assembly in the present invention;

Figure 6 is a schematic structural view of the secondary paper output roller assembly in the present invention;

Fig. 7 is a structural schematic diagram of the reverse paper tray in the present invention.

In the figure: 1. Main drive unit, 2. Motor, 3. Reverse first-stage paper feed roller assembly, 4. Pick-up roller assembly, 5. First-stage paper feed roller assembly, 6. Automatic reversing device, 7, Two Stage feed roller assembly, 8, transfer roller, 9, photosensitive drum, 10, reverse secondary feed roller assembly, 11, fixing roller assembly, 12, secondary output roller assembly, 13, primary output roller Components, 14, support frame, 15, reverse tray, 1-1, gear, 1-2, single gear transmission assembly, 1-3, gear, 1-4, single gear transmission assembly, 3-1, gear , 3-2, reverse tray primary paper feed roller, 3-3, synchronous pulley, 4-1, paper pickup electromagnetic clutch, 4-2, paper pickup roller, 5-1, gear, 5-2, a Stage paper feed roller, 6-1, reversing bracket, 6-2, gear, 6-3, idler wheel, 6-4, gear, 6-5, idler wheel, 7-1, paper feeding electromagnetic clutch, 7- 2. Secondary paper feed roller, 10-1, timing belt, 10-2, reverse tray secondary paper feed roller, 11-1, heating roller, 11-2, heating roller gear, 11-3, idler, 12-1, secondary output roller, 13-1, primary output roller gear, 13-2, primary output roller, 14-1, idler, 14-2, idler, 14-3, idler Wheel, 14-4, idler wheel, 15-1 timing belt.

Detailed ways

In order to better understand the present invention, the present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

As shown in Figure 1, the transmission mechanism for office equipment mainly includes a main transmission unit 1, a motor 2, a paper pickup roller assembly 4, a primary paper feed roller assembly 5, a secondary paper feed roller assembly 7, a transfer roller 8, a photosensitive Drum 9, fixing roller assembly 11, primary output roller assembly 13, secondary output roller assembly 12, automatic reversing device 6, reverse tray 15 in reverse tray unit, reverse primary feed The paper roller assembly 3, the reverse secondary paper feed roller assembly 10 and the support frame 14 are mainly driven by gears and partly by belts.

The motor 2, as the sole power source of the transmission unit, is installed and fixed on the left sheet metal bracket, and the main transmission unit 1 is installed on the other side of the sheet metal bracket. Since the motor 2 requires frequent commutation, a DC brushless motor with a larger torque and smooth motion is selected.

The motor 2 meshes with the two idler gears in the main transmission unit 1 at the same time to decompose the movement, and the meshing of multi-stage gears drives the movement of each roller. The rational design of the gear train ensures that the linear speed of each roller is basically the same. The paper take-up roller 4-2, the primary paper feed roller 5-2, the secondary paper feed roller 7-2, the transmission gear on the photosensitive drum 9 directly mesh with the gear in the main drive unit 1, and the primary paper output roller 13- 2 Obtain power from the gear of the heating roller 11-1 through the idler gear; the secondary output roller 12-1 obtains power from the gear in the main transmission unit 1 through the idler gear. The gear of the transfer roller 8 meshes with the gear on the other side of the photosensitive drum 9 , and the gear on the other side of the secondary paper feed roller 7 - 2 meshes with the gear train of the automatic reversing mechanism 6 to drive the rollers on the reverse paper tray 15 . The gear of the paper-feeding roller 4-2 and the gear of the secondary paper-feeding roller 7-2 are made into a friction electromagnetic clutch, that is, the paper-feeding electromagnetic clutch 4-1 and the paper-feeding electromagnetic clutch 7-1. The purpose of automatic paper picking and manual feeding actions.

The working principle of the present invention is as follows:

When printing, first control the motor 2 to rotate forward at a specified speed, and then the motor 2 drives all the gears in the main transmission unit 1 to rotate, as shown in FIG. 2 . As shown in Figure 3, the gear portion of the paper pickup electromagnetic clutch 4-1 in the paper pickup roller assembly 4 meshes with the gear 1-1. Can not drive paper taking roller 4-2 to rotate. When there is a printing task, control the pick-up electromagnetic clutch 4-1 to pull in for a specified time. At this time, the pick-up roller 4-2 rotates under the drive of the pick-up electromagnetic clutch 4-1 gear. pad to pick up paper.

The gear 5-1 of the primary paper feed roller 5 meshes with the gear 1-11 in the main drive unit 1 to obtain power, and the paper continues to move forward through the gap between the primary paper feed roller 5-2 and the primary paper feed pressure roller sports. The secondary paper feeding roller 7-2 meshes with the gear 1-1 in the main transmission unit 1 through the gear on the paper feeding electromagnetic clutch 7-1, and when the paper is about to pass through this place, the paper feeding electromagnetic clutch 7-1 is controlled to engage, so that The secondary paper feed roller 7-2 rotates. The gear of the photosensitive drum 9 in the toner cartridge meshes with the one-way gear transmission assembly 1-4 in the main drive unit 1. When the motor 2 rotates forward, it will drive the photosensitive drum 9 to rotate, and the paper moves between the photosensitive drum 9 and the transfer roller 8. for the first transfer. The heating roller gear 11-2 meshes with the one-way gear transmission assembly 1-2 in the main transmission unit 1, the heating roller 11-1 can rotate when the motor 2 rotates forward, and the paper passes between the heating roller 11-1 and the pressure rubber roller Fixing is then completed.

The primary paper output roller 13-2 is engaged with the heating roller gear 11-2 through the primary paper output roller gear 13-1, the idler gear 11-3, and the idler gear 14-3, thereby obtaining power. The secondary paper output roller 12-1 meshes with the gear 1-3 in the main transmission unit 1 through the idler gear 14-4, the idler gear 14-1, and the idler gear 14-2, thereby obtaining power. When the tail end of the paper is about to leave the secondary paper output roller 12-1, the control motor 2 is reversed, so the secondary paper output roller 12-1 is reversed, so that the paper enters the reverse paper tray 15 from the reverse paper path When the paper head is about to approach the first-stage paper feed roller 3-2 of the reverse tray, control the paper-feed electromagnetic clutch 7-1 to engage, and the second-stage paper feed roller 7-2 drives the gear 6-2 to rotate and drives the reversing bracket 6-1 swings an angle so that the idler gear 6-5 meshes with the gear 6-4. At this time, the gear 6-4 will drive the secondary paper feed roller 10-2 of the reverse support tray to rotate together through the gear 3-1, the synchronous pulley 3-3, the synchronous belt 15, and the synchronous pulley 10-1. The same principle applies to the three-stage feed roller of the paper tray.

When the paper breaks away from the secondary paper output roller 12-1 and is in the reverse paper support tray 15, the control motor 2 resumes normal rotation and keeps the paper feeding electromagnetic clutch 7-1 engaged, and the secondary paper feeding roller 7-2 drives the gear 6-2 rotates and drives the reversing bracket 6-1 to swing an angle, so that the idler gear 6-3 meshes with the gear 6-4. Still make all the rollers on the reverse paper tray 15 keep forward rotation at this moment. Afterwards, the paper passes through the secondary paper feed roller 7-2 and repeats the above motion to complete the printing action of the second page.

The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention, and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the scope of the present invention should still belong to the scope of this patent.

Claims (5)

1. a kind of office equipment transmission mechanism, it is characterised in that：Including motor, main transmission unit, paper bowl component, level-one is taken to send Paper bowl component, two level paper feeding roll assembly, fixing roll assembly, level-one paper delivery roll assembly, two level paper delivery roll assembly, automatic reverse machine Structure, reversed tray paper disk, photosensitive drums, transfer roll and supporting rack；The main transmission unit and the motor have been fixedly connected with metal plate Holder, the main transmission unit are located at the outside of the metal plate holder, and the motor is located at the inside of the metal plate holder, described Motor takes paper bowl component, level-one paper feeding roll assembly, two level paper feeding roll assembly, fixing roller group by the main transmission unit to be described Part, level-one paper delivery roll assembly, two level paper delivery roll assembly provide operating power；

Wherein, described take in paper bowl component takes paper bowl, the level-one feeding-in roll in the level-one paper feeding roll assembly, the two level to send The transmission gear on two level feeding-in roll, the photosensitive drums in paper bowl component is directly nibbled with the gear in the main transmission unit It closes, the level-one exit roller in the level-one paper delivery roll assembly is nibbled by idle pulley and the heating roller gear in the fixing roll assembly It closes, the two level exit roller in the two level paper delivery roll assembly is engaged by idle pulley with the gear in the main transmission unit；It is described Another side gear of two level feeding-in roll is engaged with the gear train of the automatic reversing mechanism to be provided for the roller on the reversed tray paper disk Power, the gear of the transfer roll are engaged with another side gear of the photosensitive drums, and described take in paper bowl component takes paper bowl gear It is made respectively with the two level feeding-in roll and gear meshed gears in the main transmission unit and frictional takes paper electromagnetism Clutch and frictional paper feeding electromagnetic clutch.

2. office equipment transmission mechanism according to claim 1, it is characterised in that：The motor is brush DC horse It reaches.

3. office equipment transmission mechanism according to claim 1, it is characterised in that：The photosensitive drums and the fixing roller Heating roller in component is respectively single-direction transmission with the gear in the gear unit.

4. office equipment transmission mechanism according to claim 1, it is characterised in that：Paper electromagnetic clutch is taken when described not It is described that paper bowl gear is taken to dally when actuation, it is described to take paper bowl static；When it is described take paper electromagnetic clutch be attracted when, it is described to take paper Roller rotates under the drive for taking paper bowl gear.

5. the office equipment transmission mechanism according to any one of claim 1-4, it is characterised in that：The two level is sent Paper bowl, which is engaged by the gear of the paper feeding electromagnetic clutch with the gear in the main transmission unit, obtains power.