Paper pressing wheel system with deviation rectifying function

Abstract

A paper pressing wheel system with a deviation rectifying function comprises a plurality of pressing wheel assemblies installed above a printer platform plate side by side, and is characterized in that a deviation rectifying main shaft is rotationally installed between two supporting plates of the platform plate on the inner sides of the pressing wheel assemblies, and a plurality of shifting rods are arranged on the deviation rectifying main shaft in the length direction of the deviation rectifying main shaft at equal intervals; the deviation rectifying system comprises a deviation rectifying main shaft, a plurality of shifting rods and a plurality of pressing wheel assemblies are arranged on the deviation rectifying main shaft, the shifting rods correspond to the pressing wheel assemblies in a one-to-one mode, the inner ends of the shifting rods are located above pressing plates of the pressing wheel assemblies, and a driving assembly for driving the deviation rectifying main shaft to rotate is installed at one end of the deviation rectifying main shaft. A deflector rod arranged on the deviation rectifying main shaft rotates to press a pressing plate in the pressing wheel assembly downwards, a pressing wheel is lifted automatically, after a printing paper strip is adjusted, a motor rotates reversely, the pressing plate can reset automatically, manual participation is not needed any more, the deviation rectifying process is simple and efficient, and large influence on printing continuity is avoided.

Description

Technical Field

[0001] The utility model relates to the field of photo machines, in particular to a paper pressing wheel system with deviation correction. Background Art

[0002] The printer's pinch roller system is an important component inside the printer. It is mainly responsible for pressing and stabilizing the printing paper during the printing process. The pinch roller can ensure that the paper remains stable during the printing process without deflection or sliding, thereby ensuring the accuracy and clarity of the printing. By applying appropriate pressure, it can prevent paper jams during paper feeding or printing, improve printing efficiency, and stable paper transmission helps reduce problems such as missed printing and ghosting during printing, thereby improving the overall printing quality. During the printing process of the printer, the printing paper will be subject to the resistance of unwinding and the friction of the surface of the printing platform, and the printing paper is prone to deflection on the printing platform, affecting the printing quality. The current solution is mainly to manually lift the paper lifting rod at the end of the pinch roller main shaft to drive the pinch roller upward away from the printing paper to perform correction adjustments. This adjustment operation method is not convenient enough and has a great impact on printing continuity, which needs to be improved. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a paper pressing wheel system with deviation correction.

[0004] The technical solution of the utility model is: a paper pressing wheel system with deflection correction, comprising a plurality of pressing wheel assemblies installed side by side above a printer platform plate, a deflection correction main shaft is rotatably installed between two supporting plates of the platform plate inside the deflection wheel assembly, the deflection correction main shaft and the driving shaft of the deflection correction main shaft are arranged parallel to each other, a plurality of shifting rods are arranged on the deflection correction main shaft at equal intervals along its length direction, the shifting rods are connected to the deflection correction main shaft in a radial direction, a plurality of shifting rods correspond to a plurality of pressing wheel assemblies one by one, the inner end portion of the shifting rod is located above the pressure plate of the pressure wheel assembly, and can be pressed downward on the upper surface of the end portion of the pressure plate, and a driving assembly for driving the deflection correction main shaft to rotate is installed at one end of the deflection correction main shaft.

[0005] Preferably, the driving assembly includes a U-shaped bracket fixedly mounted on the outer side of the support plate and a reduction motor, the reduction motor is transversely mounted in the middle of the U-shaped bracket, the driving shaft of the reduction motor extends into the interior of the U-shaped bracket, the end of the correction spindle extends into the U-shaped bracket and a driven gear is installed on the end of the correction spindle, and a driving gear meshing with the driven gear is installed on the output shaft of the reduction motor.

[0006] Preferably, the driven gear is a sector gear, and the driving gear is meshed with the sector gear at the bottom, and in an uncorrected state, the center of the sector gear is meshed with the driving gear.

[0007] Preferably, the overall size of the driving gear is smaller than the overall size of the sector gear.

[0008] Preferably, an opto-coupler switch is installed on the ear plate at one end of the U-shaped bracket. The U-shaped bracket is fixedly connected to the support plate by screws, and a limit piece corresponding to the position of the opto-coupler switch is installed on the side of the driven gear.

[0009] Preferably, the deviation rectifying main shaft is provided with a mounting hole which is arranged along the radial direction of the deviation rectifying main shaft, and the dial rod is connected to the mounting hole by threads.

[0010] Preferably, the deviation rectifying main shaft is a hexagonal shaft, and the hexagonal shaft is slightly higher than the pressing plate of the pressure wheel assembly.

[0011] Preferably, the deviation rectifying main shaft is rotatably connected to the support plate through a bushing. A limit ring is provided at the outer end of the bushing, and a hexagonal hole matching the size of the deviation rectifying main shaft is provided in the bushing.

[0012] The beneficial technical effects of the present utility model are as follows:

[0013] (1) The motor of the present utility model automatically drives the deviation rectifying main shaft to rotate. The dial rod arranged on the deviation rectifying main shaft rotates to press down the pressing plate in the pressure wheel assembly, automatically lifting the pressure wheel. After the printing paper strip is adjusted, the motor reverses and the pressing plate can automatically reset, without the need for manual participation. The deviation rectifying process is simple and efficient, and will not have a great impact on the printing continuity.

[0014] (2) The present utility model forms double protection for the deviation rectifying main shaft by designing a sector gear and an opto-coupler switch, avoiding the phenomenon that the deviation rectifying main shaft rotates too much and damages the pressure wheel assembly, and ensuring the stability and safety of the deviation rectifying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view structural schematic diagram of the present utility model;

[0016] Figure 2 is Figure 1 the enlarged view at a of

[0017] Figure 3 is Figure 1 the enlarged view at b of

[0018] Figure 4 the three-dimensional structural schematic diagram of the deviation rectifying main shaft and the driving assembly;

[0019] Figure 5 is Figure 4 the partial structural schematic diagram of

[0020] Figure 6 is the partial structural schematic diagram of the deviation rectifying main shaft and the driving assembly.

[0021] In the figure, 21. Pressure wheel assembly, 211. Pressure plate, 212. Pressure wheel, 22. Platform plate, 23. Support plate, 24. Deviation rectification main shaft, 241. Poking rod, 242. Driven gear, 243. Bush, 25. Reduction motor, 251. Driving gear, 26. U-shaped bracket, 27. Photoelectric switch, 271. Limit piece. Detailed implementation mode

[0022] Example 1. Refer to the attached drawings of the specification Figures 1-3 , A paper pressing wheel system with deviation rectification, including a plurality of pressure wheel assemblies 21 arranged side by side above the printer platform plate 22. A deviation rectification main shaft 24 is rotatably installed between two support plates 23 of the platform plate inside the pressure wheel assembly. A plurality of poking rods 241 are equidistantly arranged along the length direction of the deviation rectification main shaft 24. The plurality of poking rods correspond to the plurality of pressure wheel assemblies 21 one by one. The inner end of the poking rod 241 is located above the pressure plate 211 of the pressure wheel assembly. The poking rod 241 is a cylindrical rod, and a fillet is provided at the outer end of the poking rod. When the poking rod 241 rotates downward, its lower end can press against the surface of the pressure plate 211. A driving component for driving the rotation of the deviation rectification main shaft is installed at one end of the deviation rectification main shaft 24. The driving component automatically drives the rotation of the deviation rectification main shaft 24. The poking rod 241 arranged on the deviation rectification main shaft 24 rotates to press down the pressure plate 211 in the pressure wheel assembly 21, and automatically lifts the pressure wheel 212.

[0023] An installation hole is provided on the deviation rectification main shaft 24, and the poking rod 241 is connected to the installation hole by a thread. This connection structure can conveniently adjust the protruding length of the lower end of the poking rod.

[0024] The deviation rectification main shaft 24 is a hexagonal shaft. The deviation rectification main shaft is rotatably connected to the support plate 23 through a bush 243. A hexagonal hole matching the size of the deviation rectification main shaft 24 is provided in the bush. The hexagonal shaft is convenient for installing the poking rod 241 and the gear, and both assembly and disassembly are relatively convenient, which is beneficial to later maintenance.

[0025] Example 2. Refer to the attached drawings of the specification Figure 1 , 3 , 5. On the basis of Example 1, this example designs the driving component to include a U-shaped bracket 26 and a reduction motor 25 fixedly installed on the outer side surface of the support plate 23. The reduction motor is horizontally installed in the middle of the U-shaped bracket 26. A through hole is provided in the middle of the U-shaped bracket 26. The driving shaft of the reduction motor 25 extends into the U-shaped bracket through this through hole. The end of the deviation rectification main shaft 24 extends into the U-shaped bracket 26, and a driven gear 242 is installed at the end of the deviation rectification main shaft 24. A driving gear 251 meshing with the driven gear is installed on the output shaft of the reduction motor 25.

[0026] When the driving component works, the deceleration motor 25 is started to drive the driving gear 251 to rotate. The driving gear drives the driven gear 242 to rotate, and the driven gear drives the deviation correction main shaft 24 to rotate. Each lever 241 on the deviation correction main shaft 24 rotates downward synchronously, correspondingly pressing the outer end of the pressing plate 211 of each pressure wheel assembly 21. The pressure wheel 212 at the other end of the pressing plate lifts upward, releasing the pressing on the printing paper. Then, the printing paper is adjusted for deviation correction. After the deviation correction, the deceleration motor 25 reverses, and each lever 241 lifts upward and leaves the pressing plate 211. The pressing plate automatically resets, and the pressure wheel 212 presses the printing paper again. This process does not require manual participation. The deviation correction process is simple and efficient, and will not have a great impact on the printing continuity.

[0027] Embodiment 3, see the attached drawings of the specification Figures 5-6 , on the basis of Embodiment 2, in this embodiment, the driven gear 242 is designed as a sector gear, and the driving gear 251 meshes with the sector gear below. The overall size of the driving gear 251 is smaller than the overall size of the sector gear. After the driving gear 251 drives the sector gear to rotate and move an angle, the sector gear leaves the driving gear, and the two no longer mesh. Even if the motor continues to drive the driving gear 251, it cannot drive the deviation correction main shaft 24 to rotate; and an optical coupling switch 27 is installed on the ear plate at one end of the U-shaped bracket 26, and a limit piece 271 corresponding to the position of the optical coupling switch 27 is installed on the side of the driven gear 242. After the limit piece 271 rotates a certain angle along with the sector gear, the limit piece triggers the optical coupling switch, and the optical coupling switch 27 sends a signal to the controller of the motor, and the motor stops running. The sector gear and the optical coupling switch form a double protection for the deviation correction main shaft 24, avoiding the phenomenon that the deviation correction main shaft 24 rotates too much and presses the pressure wheel assembly 21, and ensuring the stability and safety of the deviation correction process.

Claims

1. A paper pressing wheel system with deviation correction, comprising a plurality of pressing wheel assemblies installed side by side above a printer platform, characterized in that: A deflection correction spindle is rotatably installed between the two support plates of the platform plate inside the pressure wheel assembly. A number of levers are provided on the deflection correction spindle at equal intervals along its length direction. The number of levers corresponds to a number of pressure wheel assemblies one by one. The inner end of the lever is located above the pressure plate of the pressure wheel assembly. A driving assembly for driving the deflection correction spindle to rotate is installed at one end of the deflection correction spindle.

2. The paper pressing wheel system with deviation correction according to claim 1, characterized in that: The driving assembly includes a U-shaped bracket fixedly mounted on the outer side of the support plate and a reduction motor, the reduction motor is horizontally mounted in the middle of the U-shaped bracket, the end of the correction spindle extends into the U-shaped bracket and a driven gear is mounted on the end of the correction spindle, and a driving gear meshing with the driven gear is mounted on the output shaft of the reduction motor.

3. The paper pressing wheel system with deviation correction according to claim 2 is characterized in that: The driven gear is a sector gear, and the driving gear is meshed with the sector gear at the bottom.

4. The paper pressing wheel system with deviation correction according to claim 3 is characterized in that: The overall size of the driving gear is smaller than the overall size of the sector gear.

5. The paper pressing wheel system with deviation correction according to claim 2 is characterized in that: An optical coupler switch is installed on the ear plate at one end of the U-shaped bracket, and a limit plate corresponding to the position of the optical coupler switch is installed on the side of the driven gear.

6. The paper pressing wheel system with deviation correction according to claim 1, characterized in that: The deviation-correcting main shaft is provided with a mounting hole, and the shifting rod is connected to the mounting hole through threads.

7. The paper pressing wheel system with deviation correction according to claim 1 is characterized in that: The deviation correction main axis is a hexagonal axis.

8. The paper pressing wheel system with deviation correction according to claim 7, characterized in that: The deflection correction main shaft is rotatably connected to the support plate through a shaft sleeve, and a hexagonal hole matching the size of the deflection correction main shaft is arranged in the shaft sleeve.

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