Printer printing platform stretching structure

Abstract

The utility model relates to a stretching structure of a printing platform of a printer, which is characterized by comprising a frame, a support component, a tensioning component, a transmission belt, a front transmission shaft and a rear transmission shaft, the support component, the front transmission shaft and the rear transmission shaft are all mounted on the frame, and the transmission belt is mounted on the front transmission shaft and the rear transmission shaft. The fixed end of the tensioning assembly is fixedly connected with the rack, the movable end of the tensioning assembly is connected with the front transmission shaft, mechanical adjustment and structure optimization are achieved through the tensioning assembly, the service life of the transmission belt is prolonged, and the printing quality is improved.

Description

Technical Field

[0001] The utility model relates to a mechanical structure, and more specifically, to a stretching structure of a printing platform of a printer. Background Art

[0002] There is a printing platform inside the printer, which supports the paper during printing. In order to cooperate with the movement of the paper, the printing platform will be equipped with two drive shafts and a drive belt to form dynamic support. This can reduce the friction loss of the paper, the printing point will be accurate, and the final print quality will be improved. However, in actual use, it is found that the drive shaft in the printing platform in the existing technology is usually fixed in position, and the drive belt will gradually deform and stretch with the increase of usage time. This causes the drive belt to become loose, the friction between the drive belt and the paper to increase, and eventually the paper is damaged. The service life of the drive belt is greatly reduced, and the print quality is reduced. Therefore, a printer printing platform stretching structure is needed, which can increase the service life of the drive belt and improve the print quality.

[0003] In view of the above reasons, how to increase the service life of the transmission belt is exactly the issue considered in this application. Utility Model Content

[0004] In view of the shortcomings of the existing technology, a printer printing platform stretching structure is provided, which can increase the service life of the transmission belt and improve the printing quality.

[0005] To achieve the above-mentioned purpose, the following technical solution is provided: a printer printing platform stretching structure includes a frame, a support assembly, a tensioning assembly, a transmission belt, a front drive shaft and a rear drive shaft. The support assembly, the front drive shaft and the rear drive shaft are all installed on the frame, the transmission belt is installed on the front drive shaft and the rear drive shaft, the fixed end of the tensioning assembly is fixedly connected to the frame, and the movable end of the tensioning assembly is connected to the front drive shaft.

[0006] In summary, the above technical solution has the following beneficial effects: the support assembly, the transmission belt, the front transmission shaft and the rear transmission shaft constitute the most basic printing platform, the front transmission shaft and the rear transmission shaft are installed on the frame, the transmission belt is driven to move by the rotation of the front transmission shaft and the rear transmission shaft, and the paper is transferred by the movement of the transmission belt, the fixed end of the tensioning assembly is connected to the support assembly, and by adjusting the tensioning assembly, the position of the front transmission shaft can be moved in a specific direction, changing the distance between it and the rear transmission shaft, thereby tightening or loosening the transmission belt, and additional components such as pressure sensors can be equipped to issue an alarm when the transmission belt gradually deforms and stretches over time, thereby reminding the staff to make manual adjustments;

[0007] Under normal circumstances, the tensioning assembly itself has a dynamic balancing function. During the printing process, the transmission belt may temporarily deform due to temperature changes or continuous use for a short period of time. The tensioning assembly can compensate in real time to maintain constant tension and ensure accurate transmission. A too tight transmission belt will accelerate wear, while a too loose transmission belt will cause tooth skipping. Therefore, the tensioning assembly needs to optimize the tension to reduce the mechanical loss of the belt and transmission shaft, extend the life of the parts, and at the same time, appropriate tension can reduce transmission belt vibration, reduce operating noise, and suppress the interference of vibration on printing accuracy.

[0008] The utility model realizes mechanical adjustment and structural optimization by arranging the extension component, thereby increasing the service life of the transmission belt and improving the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the three-dimensional structure of the printer's printing platform tensile structure;

[0010] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the utility model;

[0011] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0012] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0013] Figure 5 A top view of the tensioning assembly.

[0014] 1. Frame; 2. Support assembly; 3. Tensioning assembly; 4. Drive belt; 5. Front drive shaft; 6. Rear drive shaft;

[0015] 21. Support plate; 22. Upper support frame; 23. Lower support frame; 24. Sliding block; 25. Indicator; 26. Limiting member; 27. Adjusting bolt; 28. Limiting bolt;

[0016] 211, ruler;

[0017] 31. Telescopic device; 32. Resistance member; 33. Roller. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0019] Reference Figure 1-5As shown, the printer printing platform stretching structure includes a frame 1, a support component 2, a tensioning component 3, a transmission belt 4, a front drive shaft 5 and a rear drive shaft 6. The support component 2, the front drive shaft 5 and the rear drive shaft 6 are all installed on the frame 1, the transmission belt 4 is installed on the front drive shaft 5 and the rear drive shaft 6, the fixed end of the tensioning component 3 is fixedly connected to the frame 1, and the movable end of the tensioning component 3 is connected to the front drive shaft 5.

[0020] The support assembly 2, transmission belt 4, front transmission shaft 5 and rear transmission shaft 6 constitute the most basic printing platform. The front transmission shaft 5 and rear transmission shaft 6 are installed on the frame 1. The transmission belt 4 is moved by the rotation of the front transmission shaft 5 and the rear transmission shaft 6, and the paper is transferred by the movement of the transmission belt 4. The fixed end of the tensioning assembly 3 is connected to the support assembly 2. By adjusting the tensioning assembly 3, the position of the front transmission shaft 5 can be moved in a specific direction, changing the distance between it and the rear transmission shaft 6, thereby tightening or loosening the transmission belt 4. Additional components such as pressure sensors can be equipped to issue an alarm when the transmission belt 4 gradually deforms and stretches over time, thereby reminding the staff to make manual adjustments.

[0021] Under normal circumstances, the tensioning assembly 3 itself has a dynamic balancing function. During the printing process, the transmission belt 4 may produce temporary deformation due to temperature changes or continuous use over a short period of time. The tensioning assembly 3 can compensate in real time to maintain constant tension and ensure accurate transmission. An overly tight transmission belt 4 will accelerate wear, while an overly loose transmission belt will cause tooth skipping. Therefore, the tensioning assembly 3 needs to optimize the tension to reduce the mechanical loss of the belt and the transmission shaft, thereby extending the life of the parts. At the same time, appropriate tension can reduce the vibration of the transmission belt 4, reduce operating noise, and suppress the interference of vibration on printing accuracy.

[0022] The utility model realizes mechanical adjustment and structural optimization by arranging the extension component, thereby increasing the service life of the transmission belt 4 and improving the printing quality.

[0023] Furthermore, the support assembly 2 includes a support plate 21, an upper support frame 22, a lower support frame 23 and a sliding block 24. The rear drive shaft 6 is rotatably connected to the support plate 21. The upper support frame 22 and the lower support frame 23 are both fixedly connected to the support plate 21. The upper support frame 22 and the lower support frame 23 are both slidably connected to the sliding block 24. The upper support frame 22 and the lower support frame 23 form a clamping structure, and the front drive shaft 5 is rotatably connected to the sliding block 24.

[0024] Furthermore, the support assembly 2 further includes an indicator 25 . A scale 211 is provided on the support plate 21 . The indicator 25 is fixedly connected to the sliding block 24 and is used to indicate the scale 211 .

[0025] Furthermore, the support assembly 2 also includes a limit member 26 and an adjusting bolt 27. The limit member 26 is fixedly connected to the support plate 21 and is used to limit the movement of the sliding block 24. The adjusting bolt 27 is threadedly connected to the limit member 26, and the adjusting bolt 27 is rotatably connected to the sliding block 24.

[0026] Furthermore, the support assembly 2 further includes a limiting bolt 28 , which is fixedly connected to the limiting member 26 . The limiting bolt 28 is used to resist the sliding block 24 , and the tensioning assembly 3 and the limiting bolt 28 form a supporting structure.

[0027] In addition to adjusting the front drive shaft 5 through the tensioning assembly 3, further adjustment is also performed through the sliding block 24. The installation of the front drive shaft 5 and the sliding block 24 will inevitably create a certain degree of buffer space, which is used for adjustment of the tensioning assembly 3. However, if the transmission belt 4 is greatly deformed or the transmission belt 4 is replaced with a different length, it is impossible to adjust it by the tensioning device. In this case, the position of the front drive shaft 5 needs to be adjusted by the sliding block 24.

[0028] In the process of adjusting the position of the sliding block 24, the specific distance difference of the adjustment can be observed through the indicator 25 and the scale 211, and the tensioning assembly 3, the adjusting bolt 27 and the limit bolt 28 work together to adjust the position of the sliding block 24. The adjusting bolt 27 is threadedly connected to the limit member 26 and is fixed in relative position with the sliding block 24. Therefore, the position of the East China fast can be adjusted by rotating the adjusting bolt 27, and the limit bolt 28 is used to control the maximum movement position of the sliding block 24. By cooperating with the tensioning assembly 3 to form a supporting structure, the sliding block 24 is prevented from being damaged by the transmission belt 4 due to excessive movement of the tensioning assembly 3.

[0029] Furthermore, the tensioning assembly 3 includes a telescopic device 31 and a resistance member 32, the resistance member 32 is used to resist the front drive shaft 5, the resistance member 32 is arc-shaped at one end facing the front drive shaft 5, the resistance member 32 is fixedly connected to the telescopic end of the telescopic device 31, and the fixed end of the telescopic device 31 is connected to the frame 1.

[0030] Furthermore, the tensioning assembly 3 further includes a roller 33 , which is rotatably connected to the resistance member 32 and rotatably connected to the front transmission shaft 5 .

[0031] The telescopic device 31 can adopt a hydraulic cylinder or a pneumatic cylinder and has a certain degree of free telescopic performance. The axial movement of the telescopic device 31 drives the resistance member 32 to move, thereby realizing the contact pressure adjustment of the front drive shaft 5. The fixed end of the telescopic device 31 realizes system positioning through the frame 1 to form a stable force transmission path. The arc-shaped end face of the resistance member 32 fits with the cylindrical surface of the front drive shaft 5 to form surface contact rather than point contact, thereby reducing local stress concentration. The roller 33 forms rolling friction with the front drive shaft 5, replacing the traditional sliding friction, reducing movement resistance, and allowing the front drive shaft 5 to rotate freely.

[0032] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. The printing platform tensile structure of the printer is characterized by: It includes a frame, a support assembly, a tensioning assembly, a transmission belt, a front transmission shaft and a rear transmission shaft. The support assembly, the front transmission shaft and the rear transmission shaft are all installed on the frame. The transmission belt is installed on the front transmission shaft and the rear transmission shaft. The fixed end of the tensioning assembly is fixedly connected to the frame, and the movable end of the tensioning assembly is connected to the front transmission shaft.

2. The printer printing platform tensile structure according to claim 1, characterized in that: The tensioning assembly includes a telescopic device and a resistance member, the resistance member is used to resist the front transmission shaft, the resistance member is arc-shaped at one end facing the front transmission shaft, the resistance member is fixedly connected to the telescopic end of the telescopic device, and the fixed end of the telescopic device is connected to the frame.

3. The printer printing platform tensile structure according to claim 2, characterized in that: The tensioning assembly further includes a roller, which is rotatably connected to the resistance member and rotatably connected to the front transmission shaft.

4. The printer printing platform tensile structure according to any one of claims 1 to 3, characterized in that: The support assembly includes a support plate, an upper support frame, a lower support frame and a sliding block. The rear transmission shaft is rotatably connected to the support plate. The upper support frame and the lower support frame are fixedly connected to the support plate. The upper support frame and the lower support frame are slidably connected to the sliding block. The upper support frame and the lower support frame form a clamping structure. The front transmission shaft is rotatably connected to the sliding block.

5. The printer printing platform tensile structure according to claim 4, characterized in that: The support assembly further includes an indicator. A scale is provided on the support plate. The indicator is fixedly connected to the sliding block and is used to indicate the scale.

6. The printer printing platform tensile structure according to claim 5, characterized in that: The support assembly further includes a limit member and an adjusting bolt. The limit member is fixedly connected to the support plate and is used to limit the movement of the sliding block. The adjusting bolt is threadedly connected to the limit member, and the adjusting bolt is rotatably connected to the sliding block.

7. The printer printing platform tensile structure according to claim 6, characterized in that: The support assembly further comprises a limiting bolt, which is fixedly connected to the limiting member and is used to abut against the sliding block. The tensioning assembly and the limiting bolt form a supporting structure.

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