Gear shaft for printer

Abstract

The utility model belongs to the technical field of gears, and particularly relates to a gear shaft for a printer, which comprises an outer metal frame, a buffer layer is fixedly connected inside the outer metal frame, an inner metal frame is fixedly connected to the inner wall of the buffer layer, a buffer fixing structure is arranged at the top of the outer metal frame, and the buffer fixing structure comprises a fixing rod. The bottom of the fixing rod is fixedly connected to the top of the inner metal frame, a buffer cavity is formed in the buffer layer, a plurality of cushioning structures are arranged in the buffer cavity, each cushioning structure comprises a base support, one end of each base support is fixedly connected to the inner wall of one side of the buffer layer, and the other end of each base support is fixedly connected to the inner wall of the other side of the buffer layer. The other ends of the multiple base supports are fixedly connected with hydraulic pipes, sliding holes are formed in the tops of the hydraulic pipes, and piston rods are slidably connected into the sliding holes. The gear shaft has the beneficial effects of improving the shock absorption and shock resistance of the gear shaft and prolonging the service life of the gear shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of gears, in particular to a gear shaft for a printer. Background Art

[0002] A printer is a machine for printing text and images. Modern printers generally consist of mechanisms such as plate loading, inking, impression, and paper feeding (including folding). Its working principle is as follows: First, the text and images to be printed are made into printing plates and installed on the printer. Then, ink is applied to the areas with text and images on the printing plate manually or by the printer, and then transferred directly or indirectly to paper or other printing substrates (such as textiles, metal plates, plastics, leather, wood, glass, and ceramics), thereby reproducing the same printed matter as the printing plate. The invention and development of printers play an important role in the spread of human civilization and culture.

[0003] The existing printer gear shafts usually include an outer skeleton, an inner skeleton, and a rubber part. The inner skeleton and the outer skeleton are made of metal materials, having relatively high mechanical strength and load-bearing capacity. The rubber part is located between the inner skeleton and the outer skeleton and plays a role in shock absorption. That is, during use, the outer skeleton and the inner skeleton continuously compress and loosen the rubber part, relying solely on the rubber part for shock absorption. During long-term use, the above fatigue effect will cause the rubber part to crack or break, resulting in a short service life. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a gear shaft for a printer, which solves the problems in the background.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0006] A gear shaft for a printer, including an outer metal frame, wherein a buffer layer is fixedly connected inside the outer metal frame, and an inner metal frame is fixedly connected to the inner wall of the buffer layer. A buffer fixing structure is arranged on the top of the outer metal frame. The buffer fixing structure includes a fixing rod, and the bottom of the fixing rod is fixedly connected to the top of the inner metal frame. A buffer cavity is arranged inside the buffer layer, and a plurality of shock absorption structures are arranged inside the buffer cavity. The plurality of shock absorption structures include a base bracket, and one end of the base bracket is fixedly connected to one inner wall of the buffer layer.

[0007] In a preferred embodiment, the other ends of the plurality of base brackets are fixedly connected to hydraulic pipes, and a sliding hole is opened at the top of the hydraulic pipe. A piston rod is slidably connected inside the sliding hole. One end of the piston rod is fixedly connected to a spring plate, one side of the spring plate is fixedly connected to one inner wall of the buffer layer, and the other layer of the spring plate is fixedly connected to a spring. The other end of the spring is fixedly connected to one side of the hydraulic pipe.

[0008] In a preferred embodiment, the other end of the piston rod is fixedly connected with a damping piston, and two liquid inlet holes are formed in the top of the damping piston. A floating piston is movably connected to the inner wall of the hydraulic pipe, and the floating piston is located below the damping piston.

[0009] In a preferred embodiment, the space at the bottom of the hydraulic pipe below the floating piston is an air chamber, the space below the damping piston above the floating piston is a lower chamber, and the space above the damping piston is an upper chamber.

[0010] In a preferred embodiment, the buffer fixing structure includes an outer fixing seat. The bottom of the outer fixing seat is fixedly connected to the top of the outer metal frame. A rubber block is fixedly connected inside the outer fixing seat. An installation groove is formed inside the rubber block, and a fixing rod is fixedly connected inside the installation groove. The fixing rod is fixedly connected to the outer wall of the fixing column.

[0011] In a preferred embodiment, a plurality of grooves are formed in the outer wall of the inner metal frame, and rubber strips are fixedly connected inside the plurality of grooves. The rubber strips are in pressing contact with the buffer layer. Beneficial effects

[0012] The utility model provides a gear shaft for a printer. Compared with the prior art, the following beneficial effects are achieved:

[0013] 1. For the gear shaft for a printer, by providing a shock absorption structure, during the operation of the printer, when the entire gear shaft vibrates and collides, the shock absorption structure reduces the shock force received by the outer metal frame and the inner metal frame. Compared with the traditional buffer layer that only relies on the shock absorption ability of rubber itself, the shock absorption ability of the device is greatly improved, the seismic resistance of the device is improved, and the service life of the shock-absorbing gear shaft is prolonged.

[0014] 2. For the gear shaft for a printer, by providing a buffer fixing structure, during the operation of the printer, when the gear shaft is impacted and vibrated, the fixing ability of the outer metal frame and the inner metal frame is improved, avoiding the situation that the outer metal frame and the inner metal frame are skewed and misaligned, resulting in damage to the gear shaft, and improving the overall service life of the gear shaft device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 is a schematic cross-sectional structure diagram of the main body of the utility model;

[0017] Figure 3 is a schematic diagram of the shock absorption mechanism of the cross-sectional structure of the main body of the utility model;

[0018] Figure 4Schematic diagram of the fixing mechanism for the main body cross-section structure of the present utility model;

[0019] In the figure: 1. Outer metal frame; 2. Buffer layer; 3. Buffer fixing structure; 301. Outer fixing seat; 302. Fixing column; 303. Fixing rod; 304. Rubber block; 4. Inner metal frame; 5. Rubber strip; 6. Shock-absorbing structure; 601. Base bracket; 602. Air chamber; 603. Lower chamber; 604. Hydraulic pipe; 605. Piston rod; 606. Spring; 607. Spring plate; 608. Upper chamber; 609. Damping piston; 610. Liquid inlet hole; 611. Floating piston. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution: a gear shaft for a printer, including an outer metal frame 1, a buffer layer 2 is fixedly connected inside the outer metal frame 1, and an inner metal frame 4 is fixedly connected to the inner wall of the buffer layer 2. A buffer fixing structure 3 is arranged on the top of the outer metal frame 1. The buffer fixing structure 3 includes a fixing rod 303, and the bottom of the fixing rod 303 is fixedly connected to the top of the inner metal frame 4. A buffer cavity is arranged inside the buffer layer 2, and a plurality of shock-absorbing structures 6 are arranged inside the buffer cavity. The plurality of shock-absorbing structures 6 include a base bracket 601, and one end of the base bracket 601 is fixedly connected to one side inner wall of the buffer layer 2.

[0022] Specifically, the other ends of the plurality of base brackets 601 are fixedly connected to a hydraulic pipe 604, and a sliding hole is opened at the top of the hydraulic pipe 604. A piston rod 605 is slidably connected inside the sliding hole. One end of the piston rod 605 is fixedly connected to a spring plate 607, and one side of the spring plate 607 is fixedly connected to one side inner wall of the buffer layer 2. The other layer of the spring plate 607 is fixedly connected to a spring 606, and the other end of the spring 606 is fixedly connected to one side of the hydraulic pipe 604.

[0023] Specifically, the other end of the piston rod 605 is fixedly connected to a damping piston 609, and two liquid inlet holes 610 are opened at the top of the damping piston 609. A floating piston 611 is movably connected to the inner wall of the hydraulic pipe 604, and the floating piston 611 is located below the damping piston 609.

[0024] Specifically, the space where the hydraulic pipe 604 is located at the bottom of the floating piston 611 is the air chamber 602. Below the damping piston 609 above the floating piston 611 is the lower chamber 603, and the space above the damping piston 609 is the upper chamber 608. When the shock-absorbing gear shaft is affected by vibration, after the outer metal frame 1 is affected by vibration, the spring 606 is compressed, and the spring 606 begins to store vibration energy. The spring 606 drives the piston rod 605 to move up and down. During this process, the piston rod 605 drives the damping piston 609 to move up and down as well. The hydraulic oil originally in the lower chamber 603 is compressed and moves through the liquid inlet hole 610 on the damping piston 609 to the upper chamber 608. During this process, the floating piston 611 is acted on and continuously moves upward, compressing the gas in the air chamber 602. Subsequently, the floating piston 611 has a downward reaction force, and during this process, the vibration energy is continuously consumed, reducing the loss of the vibration to the device and improving the service life of the device.

[0025] Specifically, the buffer fixing structure 3 includes an outer fixing seat 301. The bottom of the outer fixing seat 301 is fixedly connected to the top of the outer metal frame 1. Inside the outer fixing seat 301, a rubber block 304 is fixedly connected. An installation groove is formed inside the rubber block 304, and a fixing rod 303 is fixedly connected inside the installation groove. The fixing rod 303 is fixedly connected to the outer wall of the fixing column 302.

[0026] Specifically, a plurality of grooves are formed on the outer wall of the inner metal frame 4, and rubber strips 5 are fixedly connected inside the plurality of grooves. The rubber strips 5 are in extrusion contact with the buffer layer 2. During the process of being affected by vibration, through the action of the fixing column 302 and the fixing rod 303, the stability of the connection among the outer metal frame 1, the buffer layer 2, and the inner metal frame 4 is improved, preventing the occurrence of tilting and offset during long-term use. The rubber strips 5 play a certain buffering effect, and at the same time, the buffer layer 2 is not easily offset, improving the service life and efficiency of the device.

[0027] Working principle: When the gear shaft is affected by vibration, after the outer metal frame 1 is affected by vibration, the spring 606 is compressed, and the spring 606 begins to store vibration energy. The spring 606 drives the piston rod 605 to move up and down. During this process, the piston rod 605 drives the damping piston 609 to move up and down as well. The hydraulic oil originally in the lower chamber 603 is compressed and moves through the liquid inlet hole 610 on the damping piston 609 to the upper chamber 608. During this process, the floating piston 611 is acted on and continuously moves upward, compressing the gas in the air chamber 602. Subsequently, the floating piston 611 has a downward reaction force, and during this process, the vibration energy is continuously consumed. At the same time, during the process of being affected by vibration, through the action of the fixing column 302 and the fixing rod 303, the stability of the connection among the outer metal frame 1, the buffer layer 2, and the inner metal frame 4 is improved.

[0028] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gear shaft for a printer, comprising an outer metal frame (1), characterized in that: A buffer layer (2) is fixedly connected inside the outer metal frame (1), and an inner metal frame (4) is fixedly connected to the inner wall of the buffer layer (2). A buffer fixing structure (3) is arranged at the top of the outer metal frame (1). The buffer fixing structure (3) includes a fixing rod (303). The bottom of the fixing rod (303) is fixedly connected to the top of the inner metal frame (4). A buffer cavity is arranged inside the buffer layer (2), and a plurality of shock-absorbing structures (6) are arranged inside the buffer cavity. The plurality of shock-absorbing structures (6) include a base bracket (601). One end of the base bracket (601) is fixedly connected to one inner wall of the buffer layer (2).

2. A gear shaft for a printer according to claim 1, characterized in that: The other ends of the plurality of base brackets (601) are fixedly connected to a hydraulic pipe (604). A sliding hole is opened at the top of the hydraulic pipe (604). A piston rod (605) is slidably connected inside the sliding hole. One end of the piston rod (605) is fixedly connected to a spring plate (607). One side of the spring plate (607) is fixedly connected to one inner wall of the buffer layer (2). Another layer of the spring plate (607) is fixedly connected to a spring (606). The other end of the spring (606) is fixedly connected to one side of the hydraulic pipe (604).

3. A gear shaft for a printer according to claim 2, characterized in that: The other end of the piston rod (605) is fixedly connected to a damping piston (609). Two liquid inlet holes (610) are opened at the top of the damping piston (609). A floating piston (611) is movably connected to the inner wall of the hydraulic pipe (604). The floating piston (611) is located below the damping piston (609).

4. A gear shaft for a printer according to claim 3, characterized in that: The space of the hydraulic pipe (604) at the bottom of the floating piston (611) is an air chamber (602). The space below the damping piston (609) and above the floating piston (611) is a lower chamber (603). The space above the damping piston (609) is an upper chamber (608). The lower chamber (603) is filled with hydraulic oil.

5. A gear shaft for a printer according to claim 1, characterized in that: The buffer fixing structure (3) includes an outer fixing seat (301). The bottom of the outer fixing seat (301) is fixedly connected to the top of the outer metal frame (1). A rubber block (304) is fixedly connected inside the outer fixing seat (301). An installation groove is opened inside the rubber block (304). A fixing rod (303) is fixedly connected inside the installation groove. The fixing rod (303) is fixedly connected to the outer wall of a fixing column (302).

6. The gear shaft for a printer according to claim 5, wherein: A plurality of grooves are opened on the outer wall of the inner metal frame (4). Rubber strips (5) are fixedly connected inside the plurality of grooves. The rubber strips (5) are in pressing contact with the buffer layer (2).

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