Transfer pressure adjustable rubber roller structure for printer

Abstract

The present invention relates to the technical field of adjustable rubber rollers and discloses a rubber roller structure with adjustable transmission pressure for a printer, comprising a base plate, two sides of the top of the base plate are respectively fixedly connected to support plates, a side of the base plate close to the top of the support plate is fixedly connected to a double-axis motor, two ends of the double-axis motor are respectively fixedly connected to a rotating shaft, an outer wall of an end of the rotating shaft away from the double-axis motor is rotatably connected to a first belt, an inner wall of an end of the first belt away from the rotating shaft is rotatably connected to a first conveying roller, two ends of the first conveying roller respectively penetrate and are rotatably connected to one side of the support plate, the double-axis motor is started, the double-axis motor drives the rotating shaft to rotate, the rotating shaft drives the first belt to rotate, the first belt drives the first conveying roller to rotate, the first conveying roller drives the second belt to rotate, the second belt drives the second conveying roller to rotate, and paper is conveyed during the rotation of the first conveying roller and the second conveying roller.

Description

Technical Field

[0001] The invention relates to the technical field of adjustable rubber rollers, in particular to a rubber roller structure with adjustable transmission pressure for a printer. Background Art

[0002] The adjustable-pressure rubber roller structure used in printers is a component designed to achieve smooth paper transport and adjust pressure. Generally speaking, the structure of the adjustable-pressure rubber roller needs to provide adjustable pressure control to ensure the stability and print quality of the printer when processing different papers.

[0003] However, in the existing rubber roller assembly, the rubber roller structure cannot adjust the position of the paper during pressure adjustment. When the pressure value of the rubber roller is too large, the rubber roller will affect the transportation of the paper and may cause the transportation of the paper to deviate by a small angle. Summary of the Invention

[0004] The object of the present invention is to provide a rubber roller structure with adjustable conveying pressure for a printer to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The transmission roller of the present invention is provided with an adjustable rubber roller structure for printing, comprising a bottom plate, wherein the top two sides of the bottom plate are fixedly connected to the support plate, the bottom plate is fixedly connected to a double-axis motor near the top of the support plate, and the two ends of the double-axis motor are fixedly connected to a rotating shaft, and the rotating shaft is away from the outer wall of one end of the double-axis motor and is rotatably connected to the first belt, and the inner wall of the first belt is away from the rotating shaft and is rotatably connected to the first conveying roller. The two ends of the first conveying roller respectively pass through and are rotatably connected to one side of the support plate, and the side of the support plate close to the first conveying roller passes through and is rotatably connected to the second conveying roller. The second belt is provided with two, and the two ends of the first conveying roller and the second conveying roller are fixedly connected to circular plates respectively, and the circular plates are provided with four, and a special-shaped block is fixedly connected to one side of the circular plate, and the outer wall of one end of the special-shaped block is slidably connected to a strip sleeve, and an adjusting component is provided on the top of the strip sleeve.

[0007] Furthermore, the adjustment component includes a concave plate fixedly connected to the top of two adjacent strip sleeves, and two concave plates are provided. The top of the concave plate is fixedly connected to a supporting frame, and the top two ends of the supporting frame are respectively fixedly connected to a fixed shell, and sliding grooves are respectively provided on both sides of the inner wall of the fixed shell, and the inner wall of the sliding groove is slidably connected to the sliding frame.

[0008] Furthermore, springs are fixedly connected to the tops of both ends of the sliding frame, the tops of the springs are fixedly connected to the top of the inner wall of the slide groove, the outer wall of the middle end of the sliding frame is rotatably connected to a pressure roller, a limiting hole is opened on one side of the support plate, and the outer wall of one end of the supporting frame is slidably connected to the inner wall of the limiting hole.

[0009] Furthermore, a sliding assembly is provided at one end of the sliding frame, and the sliding assembly includes a rotating bar rotatably connected to one end of the sliding frame, and the rotating bar is rotatably connected to a block at the end away from the sliding frame. The inner wall of the block is slidably connected to a round rod, and both ends of the round rod are fixedly connected to the inner wall of the fixed shell. A first return spring is fixedly connected between the two blocks, and a limiting groove is opened on one side of the outer wall of the fixed shell.

[0010] Furthermore, a clamping assembly is provided on one side of the block, and the clamping assembly includes a clamping frame fixedly connected to one side of the block, an outer wall of one end of the clamping frame is slidably connected to the inner wall of the limiting groove, and a square hole is opened at the top center of the supporting frame.

[0011] Furthermore, the outer wall of the bottom end of the clamping frame is slidably connected to the inner wall of the square hole, the top of the supporting frame is fixedly connected to the heating shell, and the two ends of the inner wall of the heating shell are respectively slidably connected to sliding rods, and one end of the sliding rod passes through the heating shell and extends to the outside of the heating shell.

[0012] Furthermore, one end of the sliding rod is fixedly connected to a square plate, the square plate is arranged outside the heating shell, and a second return spring is fixedly connected between the two sliding rods.

[0013] Furthermore, a second return spring is arranged inside the heating shell, a heater is fixedly connected to the top of the inner wall of the heating shell, and elastic tubes are respectively connected to both sides of the heating shell.

[0014] Furthermore, one end of the elastic tube passes through the fixed shell and extends to the interior of the fixed shell, the end of the elastic tube away from the heating shell is connected to the exhaust shell, and one side of the exhaust shell is fixedly connected to one side of the inner wall of the fixed shell.

[0015] Furthermore, an auxiliary component is provided at the bottom of the supporting frame. The auxiliary component includes a rotating plate rotatably connected to both ends of the bottom of the supporting frame, and four rotating plates are provided.

[0016] Furthermore, one end of the rotating plate away from the supporting frame is rotatably connected to a roller, and one side of an outer wall of the roller is rotatably connected to the outer wall of the second belt.

[0017] Furthermore, an arc spring is fixedly connected between two adjacent rotating plates.

[0018] The present invention has the following beneficial effects:

[0019] (1) The present invention starts a dual-axis motor, which drives the rotating shaft to rotate, and the rotating shaft drives the first belt to rotate, and the first belt drives the first conveying roller to rotate, and the first conveying roller drives the second belt to rotate, and the second belt drives the second conveying roller to rotate, and the paper is conveyed during the rotation of the first conveying roller and the second conveying roller, and the first conveying roller and the second conveying roller will drive the circular plate to rotate, and the circular plate drives the special-shaped block to rotate, and during the rotation of the special-shaped block, it is limited by the limiting hole, so that the strip sleeve arranged on the outside of the special-shaped block moves up and down, the strip sleeve drives the concave plate to move up and down, and the concave plate drives the supporting frame to move up and down along the outer wall of the limiting hole, and the supporting frame drives the fixed shell to move up and down, and the fixed shell drives the sliding frame to move up and down, and the sliding frame drives the pressure roller to move up and down, and the pressure roller will contact the top of the first conveying roller and the second conveying roller during the downward movement, thereby adjusting the pressure and improving the stability of paper conveying.

[0020] (2) In the present invention, when the pressure roller squeezes the first conveying roller and the second conveying roller, it is subjected to the reaction force of the first conveying roller and the second conveying roller, so that the pressure roller drives the sliding frame to move toward the inside of the fixed shell, thereby preventing excessive squeezing and causing damage to the outer walls of the first conveying roller and the second conveying roller, thereby improving the protection effect of the device. In addition, during the movement of the sliding frame, the sliding frame drives the rotating bar to move, which is limited by the round rod. The rotating bar drives the block to slide along the outer wall of the round rod, and the two blocks approach each other. The square drives the clamping frame to move, which is limited by the square hole, and the clamping frame slides along the inner wall of the square hole. During the process of the two clamping frames approaching each other, the paper can be transported in a centered manner, thereby improving the accuracy of subsequent printing of the paper.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall side structure of the present invention;

[0024] Figure 2 This is a schematic cross-sectional structural diagram of the first belt of the present invention;

[0025] Figure 3 This is a schematic cross-sectional structural diagram of the second conveyor roller of the present invention;

[0026] Figure 4 This is a schematic diagram of the cross-sectional structure of the fixed shell of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the pressure roller from a top view of the present invention;

[0028] Figure 6 This is a schematic diagram of the side structure of the rotating bar of the present invention;

[0029] Figure 7 For the present invention Figure 3 A magnified view of middle A;

[0030] Figure 8 For the present invention Figure 4 Enlarged view of middle B;

[0031] Figure 9 For the present invention Figure 4 Enlarged view of C in the middle.

[0032] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0033] In the figure: 1. Base plate; 2. Support plate; 3. Dual-axis motor; 4. Rotating shaft; 5. First belt; 6. First conveyor roller; 7. Second conveyor roller; 8. Pressure adjustment mechanism; 81. Second belt; 82. Circular plate; 83. Special-shaped block; 84. Strip sleeve; 85. Adjustment assembly; 86. Sliding assembly; 87. Clamping assembly; 88. Auxiliary assembly; 851. Concave plate; 852. Carrying frame; 853. Fixed shell; 854. Sliding frame; 855. Slide groove; 856. Spring; 857. Pressure roller; 858. Limiting hole; 861. Rotating bar; 862. Square; 863. Round rod; 864. First return spring; 865. Limiting groove; 871. Clamping frame; 872. Square hole; 873. Heating shell; 874. Sliding rod; 875. Square plate; 876. Second return spring; 877. Heater; 878. Elastic tube; 879. Exhaust shell; 881. Rotating plate; 882. Roller; 883. Arc spring. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figure 1 - Figure 9As shown, the present invention is a rubber roller structure with adjustable conveying pressure for a printer, comprising a bottom plate 1, with support plates 2 fixedly connected to both sides of the top of the bottom plate 1, a dual-axis motor 3 fixedly connected to the top side of the bottom plate 1 close to the support plate 2, the purpose of such a configuration is to perform dual-axis transmission, with rotating shafts 4 fixedly connected to both ends of the dual-axis motor 3, a first belt 5 is rotatably connected to the outer wall of the end of the rotating shaft 4 away from the dual-axis motor 3, a first conveying roller 6 is rotatably connected to the inner wall of the end of the first belt 5 away from the rotating shaft 4, the two ends of the first conveying roller 6 respectively penetrate and are rotatably connected to one side of the support plate 2, and a second conveying roller 7 is penetrated and rotatably connected to the side of the support plate 2 close to the first conveying roller 6, and further comprising;

[0036] The pressure regulating mechanism 8 includes a second belt 81 rotatably connected to the outer walls of both ends of the first conveying roller 6, and the inner wall of one end of the second belt 81 is rotatably connected to the outer walls of both ends of the second conveying roller 7 away from the first conveying roller 6. The second belt 81 is provided with two, and the first conveying roller 6 and the second conveying roller 7 are respectively fixedly connected with circular plates 82 at both ends. The circular plates 82 are provided with four, and one side of the circular plate 82 is fixedly connected with a special-shaped block 83. The outer wall of one end of the special-shaped block 83 is slidably connected with a strip sleeve 84, and the top of the strip sleeve 84 is provided with an adjusting component 85. Start the dual-axis motor 3, the dual-axis motor 3 drives the rotating shaft 4 to rotate, the rotating shaft 4 drives the first belt 5 to rotate, the first belt 5 drives the first conveying roller 6 to rotate, the first conveying roller 6 drives the second belt 81 to rotate, and the second belt 81 drives the second conveying roller 7 to rotate. During the rotation of the first conveying roller 6 and the second conveying roller 7, the paper is conveyed.

[0037] The adjustment component 85 includes a concave plate 851 fixedly connected to the top of two adjacent strip sleeves 84. There are two concave plates 851. The top of the concave plate 851 is fixedly connected to a supporting frame 852. The top two ends of the supporting frame 852 are respectively fixedly connected to a fixed shell 853. The inner walls of the fixed shell 853 are respectively provided with sliding grooves 855. The inner walls of the sliding grooves 855 are slidably connected to the sliding frame 854. The purpose of this setting is to limit the moving trajectory of the sliding frame 854.

[0038] The tops of both ends of the sliding frame 854 are respectively fixedly connected with springs 856. The purpose of this arrangement is to facilitate resetting. The top of the spring 856 is fixedly connected to the top of the inner wall of the slide groove 855. The outer wall of the middle end of the sliding frame 854 is rotatably connected with a pressure roller 857. A limiting hole 858 is provided on one side of the support plate 2. The outer wall of one end of the supporting frame 852 is slidably connected to the inner wall of the limiting hole 858. The purpose of this arrangement is to enable the supporting frame 852 to perform vertical lifting and lowering movements. When the pressure roller 857 squeezes the first conveying roller 6 and the second conveying roller 7, it is subjected to the reaction force of the first conveying roller 6 and the second conveying roller 7, so that the pressure roller 857 drives the sliding frame 854 to move toward the inside of the fixed shell 853 to prevent excessive squeezing and damage to the outer walls of the first conveying roller 6 and the second conveying roller 7, thereby improving the protection effect of the device.

[0039] A sliding assembly 86 is provided at one end of the sliding frame 854, and the sliding assembly 86 includes a rotating bar 861 rotatably connected to one end of the sliding frame 854, and the rotating bar 861 is rotatably connected to the end of the sliding frame 854 away from the sliding frame 854. The inner wall of the block 862 is slidably connected to a round rod 863, and both ends of the round rod 863 are fixedly connected to the inner wall of the fixed shell 853. A first return spring 864 is fixedly connected between the two blocks 862, and a limiting groove 865 is provided on one side of the outer wall of the fixed shell 853.

[0040] A clamping assembly 87 is provided on one side of the block 862, and the clamping assembly 87 includes a clamping frame 871 fixedly connected to one side of the block 862, and the outer wall of one end of the clamping frame 871 is slidably connected to the inner wall of the limiting groove 865, and a square hole 872 is opened at the top center of the supporting frame 852.

[0041] The outer wall of the bottom end of the clamping frame 871 is slidably connected to the inner wall of the square hole 872. The purpose of this setting is to limit the movement of the clamping frame 871. The top of the supporting frame 852 is fixedly connected to the heating shell 873, and the two ends of the inner wall of the heating shell 873 are respectively slidably connected with sliding rods 874. One end of the sliding rod 874 passes through the heating shell 873 and extends to the outside of the heating shell 873.

[0042] One end of the sliding rod 874 is fixedly connected to a square plate 875 , and the square plate 875 is arranged outside the heating shell 873 . A second return spring 876 is fixedly connected between the two sliding rods 874 .

[0043] The second return spring 876 is arranged inside the heating shell 873, and a heater 877 is fixedly connected to the top of the inner wall of the heating shell 873. The purpose of this arrangement is to produce a heating effect. The two sides of the heating shell 873 are respectively connected to elastic tubes 878. The purpose of this arrangement is to enable elastic deformation.

[0044] One end of the elastic tube 878 passes through the fixed shell 853 and extends to the interior of the fixed shell 853. The end of the elastic tube 878 away from the heating shell 873 is connected to the exhaust shell 879. One side of the exhaust shell 879 is fixedly connected to the inner wall of the fixed shell 853. The hot air flow inside the heating shell 873 enters the interior of the elastic tube 878, and the hot air flow enters the interior of the exhaust shell 879 through the elastic tube 878. The hot air flow is sprayed toward the outer wall of the pressure roller 857 through the exhaust shell 879, which can heat the paper at the pressure roller 857 and cooperate with the rolling pressure of the pressure roller 857 on the paper to prevent the paper from wrinkling during transportation, thereby further improving the subsequent printing accuracy of the paper.

[0045] An auxiliary component 88 is provided at the bottom of the carrier 852 . The auxiliary component 88 includes rotating plates 881 rotatably connected to both ends of the bottom of the carrier 852 . Four rotating plates 881 are provided.

[0046] One end of the rotating plate 881 away from the supporting frame 852 is rotatably connected to the roller 882 , and one side of the outer wall of the roller 882 is rotatably connected to the outer wall of the second belt 81 .

[0047] An arc spring 883 is fixedly connected between two adjacent rotating plates 881. When the supporting frame 852 moves downward, the pressure roller 857 squeezes the first conveyor roller 6 and the second conveyor roller 7. At the same time, the supporting frame 852 drives the rotating plate 881 to move downward, and the rotating plate 881 drives the roller 882 to move downward. During the downward movement of the roller 882, the top outer wall of the second belt 81 will be squeezed, thereby increasing the tension of the second belt 81 and indirectly improving the stability of the device operation.

[0048] When in use, the dual-axis motor 3 is started, the dual-axis motor 3 drives the rotating shaft 4 to rotate, the rotating shaft 4 drives the first belt 5 to rotate, the first belt 5 drives the first conveying roller 6 to rotate, the first conveying roller 6 drives the second belt 81 to rotate, the second belt 81 drives the second conveying roller 7 to rotate, and the first conveying roller 6 and the second conveying roller 7 rotate to convey the paper. The first conveying roller 6 and the second conveying roller 7 will drive the circular plate 82 to rotate, and the circular plate 82 drives the special-shaped block 83 to rotate. During the rotation of the special-shaped block 83, it is limited by the limiting hole 858. The strip sleeve 84 arranged on the outside of the special-shaped block 83 moves up and down, the strip sleeve 84 drives the concave plate 851 to move up and down, the concave plate 851 drives the carrier 852 to move up and down along the outer wall of the limiting hole 858, the carrier 852 drives the fixed shell 853 to move up and down, the fixed shell 853 drives the sliding frame 854 to move up and down, the sliding frame 854 drives the pressure roller 857 to move up and down, and the pressure roller 857 will contact the top of the first conveying roller 6 and the second conveying roller 7 during the downward movement, thereby adjusting the pressure and improving the stability of paper conveying.

[0049] When the pressure roller 857 squeezes the first conveying roller 6 and the second conveying roller 7, the reaction force of the first conveying roller 6 and the second conveying roller 7 causes the pressure roller 857 to drive the sliding frame 854 to move toward the inside of the fixed shell 853, preventing excessive squeezing from damaging the outer walls of the first conveying roller 6 and the second conveying roller 7, thereby improving the protection effect of the device. In the process of the movement of the sliding frame 854, the sliding frame 854 drives the rotating bar 861 to move, which is limited by the round rod 863. The rotating bar 861 drives the block 862 to slide along the outer wall of the round rod 863, and the two blocks 862 approach each other. The block 862 drives the clamping frame 871 to move, which is limited by the square hole 872, and the clamping frame 871 slides along the inner wall of the square hole 872. In the process of the two clamping frames 871 approaching each other, the paper can be transported in a centered manner, thereby improving the accuracy of subsequent printing of the paper.

[0050] When the two clamping frames 871 approach each other, the clamping frames 871 will come into contact with the square plate 875, and the clamping frames 871 will squeeze the square plate 875, and the square plate 875 will drive the sliding rod 874 to move, and the two sliding rods 874 will approach each other at the inner wall of the heating shell 873. At this time, the interior of the heating shell 873 is heated by the heater 877, and the air flow inside the heating shell 873 is converted into hot air flow. In the process of the two sliding rods 874 approaching each other, the hot air flow inside the heating shell 873 enters the interior of the elastic tube 878, and the hot air flow enters the interior of the exhaust shell 879 through the elastic tube 878. The hot air flow is ejected toward the outer wall of the pressure roller 857 through the exhaust shell 879, which can heat the paper at the pressure roller 857 and cooperate with the rolling pressure of the pressure roller 857 to prevent the paper from wrinkling during transportation, thereby further improving the subsequent printing accuracy of the paper.

[0051] When the carrier 852 moves downward, the pressure roller 857 squeezes the first conveyor roller 6 and the second conveyor roller 7, and at the same time the carrier 852 drives the rotating plate 881 to move downward, and the rotating plate 881 drives the roller 882 to move downward. During the downward movement of the roller 882, the top outer wall of the second belt 81 is squeezed, thereby increasing the tension of the second belt 81 and improving the stability of the device operation. Under the reaction force of the second belt 81, the two rotating plates 881 move away from each other, and the rotating plate 881 drives the roller 882 to move away from each other. During the movement of the roller 882, it slides on the outer wall of the second belt 81, further increasing the tension of the second belt 81 and improving the stability of the paper operation.

[0052] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A rubber roller structure with adjustable transmission pressure for a printer, comprising a bottom plate (1), characterized in that: The top two sides of the bottom plate (1) are respectively fixedly connected to support plates (2), the bottom plate (1) is fixedly connected to a double-axis motor (3) on one side close to the top of the support plate (2), and the two ends of the double-axis motor (3) are respectively fixedly connected to a rotating shaft (4), the outer wall of one end of the rotating shaft (4) away from the double-axis motor (3) is rotatably connected to a first belt (5), the inner wall of one end of the first belt (5) away from the rotating shaft (4) is rotatably connected to a first conveying roller (6), the two ends of the first conveying roller (6) respectively penetrate and are rotatably connected to one side of the support plate (2), and the side of the support plate (2) close to the first conveying roller (6) is penetrated and is rotatably connected to a second conveying roller (7), and further comprises; A pressure regulating mechanism (8), the pressure regulating mechanism (8) comprising a second belt (81) rotatably connected to the outer walls of both ends of the first conveying roller (6), the second belt (81) being rotatably connected to the outer walls of both ends of the second conveying roller (7) at the inner wall of one end away from the first conveying roller (6), two second belts (81) being provided, the first conveying roller (6) and the second conveying roller (7) being fixedly connected to circular plates (82) at both ends, four circular plates (82) being provided, one side of the circular plate (82) being fixedly connected to a special-shaped block (83), the outer wall of one end of the special-shaped block (83) being slidably connected to a strip sleeve (84), and the top of the strip sleeve (84) being provided with an adjusting component (85); The adjustment assembly (85) includes a concave plate (851) fixedly connected to the top of two adjacent strip sleeves (84), two concave plates (851) are provided, the top of the concave plate (851) is fixedly connected to a carrier (852), the top ends of the carrier (852) are respectively fixedly connected to a fixed shell (853), the inner walls of the fixed shell (853) are respectively provided with a sliding groove (855), and the inner wall of the sliding groove (855) is slidably connected to a sliding frame (854); The tops of both ends of the sliding frame (854) are respectively fixedly connected to springs (856), the tops of the springs (856) are fixedly connected to the top of the inner wall of the slide groove (855), the outer wall of the middle end of the sliding frame (854) is rotatably connected to a pressure roller (857), a limiting hole (858) is provided on one side of the support plate (2), and the outer wall of one end of the supporting frame (852) is slidably connected to the inner wall of the limiting hole (858).

2. The rubber roller structure with adjustable transmission pressure for a printer according to claim 1, characterized in that: A sliding assembly (86) is provided at one end of the sliding frame (854), and the sliding assembly (86) includes a rotating bar (861) rotatably connected to one end of the sliding frame (854), and the end of the rotating bar (861) away from the sliding frame (854) is rotatably connected to a block (862), and the inner wall of the block (862) is slidably connected to a round rod (863), and both ends of the round rod (863) are fixedly connected to the inner wall of the fixed shell (853), and a first return spring (864) is fixedly connected between the two blocks (862), and a limiting groove (865) is provided on one side of the outer wall of the fixed shell (853).

3. The rubber roller structure with adjustable transmission pressure for a printer according to claim 2, characterized in that: A clamping assembly (87) is provided on one side of the block (862), and the clamping assembly (87) includes a clamping frame (871) fixedly connected to one side of the block (862), an outer wall of one end of the clamping frame (871) is slidably connected to the inner wall of the limiting groove (865), and a square hole (872) is opened at the center of the top of the supporting frame (852).

4. The rubber roller structure with adjustable transmission pressure for a printer according to claim 3, characterized in that: The outer wall of the bottom end of the clamping frame (871) is slidably connected to the inner wall of the square hole (872), the top of the supporting frame (852) is fixedly connected to the heating shell (873), and the two ends of the inner wall of the heating shell (873) are slidably connected to sliding rods (874), and one end of the sliding rod (874) passes through the heating shell (873) and extends to the outside of the heating shell (873).

5. The rubber roller structure with adjustable transmission pressure for a printer according to claim 4, characterized in that: One end of the sliding rod (874) is fixedly connected to a square plate (875), and the square plate (875) is arranged outside the heating shell (873). A second return spring (876) is fixedly connected between the two sliding rods (874).

6. The rubber roller structure with adjustable transmission pressure for a printer according to claim 5, characterized in that: The second return spring (876) is arranged inside the heating shell (873), the top of the inner wall of the heating shell (873) is fixedly connected to a heater (877), and both sides of the heating shell (873) are connected to elastic tubes (878).

7. The rubber roller structure with adjustable transmission pressure for a printer according to claim 6, characterized in that: One end of the elastic tube (878) passes through the fixed shell (853) and extends into the interior of the fixed shell (853); one end of the elastic tube (878) away from the heating shell (873) is connected to the exhaust shell (879); one side of the exhaust shell (879) is fixedly connected to one side of the inner wall of the fixed shell (853).

8. The rubber roller structure with adjustable transmission pressure for a printer according to claim 7, characterized in that: An auxiliary component (88) is provided at the bottom of the carrier (852), and the auxiliary component (88) includes a rotating plate (881) rotatably connected to both ends of the bottom of the carrier (852), and four rotating plates (881) are provided.

9. The rubber roller structure with adjustable transmission pressure for a printer according to claim 8, characterized in that: One end of the rotating plate (881) away from the carrier (852) is rotatably connected to a roller (882), and one side of the outer wall of the roller (882) is rotatably connected to the outer wall of the second belt (81).

10. The rubber roller structure with adjustable conveying pressure for a printer according to claim 9, characterized in that: An arc spring (883) is fixedly connected between two adjacent rotating plates (881).

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