A paper feeding mechanism for an inkjet printer

Abstract

This application relates to the field of printer technology, and more particularly to a paper feeding mechanism for an inkjet printer. It includes: a frame, a roll of printing paper, a pad, rotating wheels, a drive assembly, a first pressure roller assembly, and a second pressure roller assembly. The frame includes a paper inlet end and a paper feed end. The roll of printing paper is housed within the frame at the paper inlet end. The pad is located between the paper inlet end and the paper feed end, positioned above the frame. The rotating wheels are mounted on the frame and below the pad, and are driven by the drive assembly mounted on the frame. The rotating wheels have teeth at both ends, and corresponding positioning holes are provided on both sides of the roll of printing paper. When the roll of printing paper is fed, the positioning holes on both sides sequentially insert the teeth, driving the roll of printing paper to feed. The first pressure roller assembly is located at the paper feed end, and the second pressure roller assembly is located at the paper inlet end. Their arrangement allows them to press against the roll of printing paper that passes through the paper inlet end and covers the pad, and further press against the roll of printing paper that passes through the paper feed end.

Description

Technical Field

[0001] This application relates to the field of printer technology, and more particularly to a paper feeding mechanism for an inkjet printer. Background Technology

[0002] Inkjet printers print images or text by spraying ink droplets onto the printing medium through a printhead.

[0003] However, the paper feeding mechanism of printers on the market generally uses upper and lower rollers to press the paper together, and the two rows of rollers pull the printed sheet forward. Although this transmission method has high reliability in use, it requires a long paper feeding distance to ensure that the paper is fed in the correct direction, which can result in the printed product being too large. Moreover, sometimes the paper feeding channel can be blocked, causing paper arching. Summary of the Invention

[0004] In order to overcome at least some of the defects and deficiencies in the prior art, this application provides a paper feeding mechanism for an inkjet printer with a compact overall design, which makes the printer smaller in size and prevents paper arching during printing.

[0005] Specifically, embodiments of the present invention provide a paper feeding mechanism for an inkjet printer, employing the following technical solution: An inkjet printer paper feeding mechanism includes: a frame, including a paper inlet end and a paper feed end; A roll of printing paper is housed within the frame and located at the paper feed end; A pad is disposed above the frame and between the paper feed end and the paper feed end, wherein one end of the printed roll paper passes through the paper feed end and covers the pad, and then passes through the paper feed end; A rotating wheel is mounted on the frame and located below the pad. The rotating wheel has teeth at both ends. The printing roll has positioning holes on both sides. When the printing roll is fed, the positioning holes on both sides pass through the teeth in sequence, which drives the printing roll to feed. A drive assembly, mounted on the frame and connected to the rotating wheel, is used to drive the rotating wheel to rotate. The first paper pressing roller assembly includes a first paper pressing swing arm and a first paper pressing roller component. There are two first paper pressing swing arms, which are respectively located on both sides of the frame. One end of the first paper pressing swing arm is movably connected to the frame, and the other end is connected to the first paper pressing roller component. The first paper pressing roller component is located at the paper feeding end. The second paper pressing roller assembly includes a second paper pressing swing arm and a second paper pressing roller component. There are two second paper pressing swing arms, which are respectively located on both sides of the frame. One end of the second paper pressing swing arm is movably connected to the frame, and the other end is connected to the second paper pressing roller component. The second paper pressing roller component is located at the paper feeding end.

[0006] By adopting the above technical solution, the printing roll paper with positioning holes is housed in the frame. One end of the paper roll can be laid flat to the paper feed end via the paper feed end and the pad plate. The positioning holes of the printing roll paper are fitted onto the teeth of the rotating wheel. The rotating wheel can be driven by the drive assembly to rotate and drive the printing roll paper to reciprocate. By setting the first pressure roller and the second pressure roller, the paper can be pressed down after the printing roll paper is placed to maintain the flatness of the paper. This can avoid the problem of paper arching during the printing process. Moreover, the overall structure of the printer is compact, which can reduce the size of the printer.

[0007] Optionally, the first pressure roller assembly includes: The first spring member has one end fixed to the side of the frame and the other end connected to the first paper-pressing swing arm. The side of the frame is provided with a first fixing post corresponding to the first spring member.

[0008] By adopting the above technical solution, the first spring member is connected to the first paper-pressing swing arm. Based on the elastic reset of the first spring member, the operator can easily raise and lower the first paper-pressing swing arm, which saves effort.

[0009] Optionally, an inkjet printer paper feeding mechanism further includes: a first limiting rod, fixed on the frame and located at the paper feed end, wherein one end of the printed roll paper feeds from below the first limiting rod.

[0010] By adopting the above technical solution, the first limiting rod can limit and press the paper that is laid flat on the printing roll on the machine frame.

[0011] Optionally, a paper feeding mechanism for an inkjet printer, characterized in that it further includes: a first support rod and a first fixing component located at the paper feeding end, the first support rod being close to the pad and having both ends passing through the frame and fixed to the first fixing component, wherein the frame is provided with a first movable groove corresponding to the first support rod for the first support rod to pass through; the first fixing component includes: Two first fixing seats are provided, and the two first fixing seats are respectively movably fixed on both sides of the frame; Two second spring components are provided, and one end of each second spring component is connected to one of the first fixing seats respectively. Two first support rod guide seats are provided. One end of each of the two first support rod guide seats is connected to the other end of each of the two second springs. The other end of each of the two first support rod guide seats is provided with a first engaging groove for engaging and fixing the side of the frame. Each of the two first support rod guide seats is provided with a second fixing post. The two sides of the frame are provided with a third fixing post for engaging with the first engaging groove. The first paper pressing swing rod is provided with a first guide groove for inserting the second fixing post.

[0012] When the first pressure roller is lifted, the first pressure roller drives the two first paper-pressing swing rods to lift upwards, and the second fixed column slides in the first guide groove to drive the first support rod guide seat to compress the second spring member to abut against the first fixed seat and rotate, while driving the first support rod to move downwards towards the pad.

[0013] By adopting the above technical solution, the first fixing components are set on both sides of the frame. When the first pressure roller is lifted, the two first paper-pressing swing arms are driven to lift upward, so that the second fixing column slides in the first guide groove. This causes the first support rod guide seat to compress the second spring to elastically abut against the first fixing seat, causing the first fixing seat to rotate. At the same time, the first support rod moves downward to the pad, so as to facilitate the paper laying before the printer runs and the corresponding paper positioning holes are fitted onto the teeth to ensure the flatness of the subsequent paper feeding.

[0014] Optionally, the second pressure roller assembly includes: The third spring component has one end fixed to the side of the frame and the other end connected to the second paper-pressing swing arm. A fourth fixing post is provided on the side of the frame corresponding to the third spring component.

[0015] By adopting the above technical solution, the third spring component is connected to the second paper-pressing lever. Based on the elastic reset of the third spring component, the operator can easily raise and lower the second paper-pressing lever, which saves effort.

[0016] Optionally, an inkjet printer paper feeding mechanism further includes: a second limiting rod, fixed on the frame and located at the paper feeding end, wherein one end of the printed roll paper feeds from below the second limiting rod.

[0017] By adopting the above technical solution, the second limiting rod can limit and press the paper that is laid flat on the printing roll on the machine frame.

[0018] Optionally, an inkjet printer paper feeding mechanism further includes: a second support rod located at the paper feed end, the second support rod being close to the pad and having both ends passing through the frame and fixed to the second paper pressing swing rod.

[0019] By adopting the above technical solution, the second support rod can work with the pad to support the printing roll paper.

[0020] Optionally, a paper feeding mechanism for an inkjet printer further includes a paper support rod, which is disposed within the frame and located at the paper feed end, for supporting the printing roll paper.

[0021] By adopting the above technical solution, the paper support rod can be used to support the printing roll and fix the printing roll, preventing the printing roll from falling out of the frame when rotating.

[0022] Optionally, the drive assembly is configured as two, located on both sides of the frame respectively. The drive assembly includes: a motor synchronous pulley, a synchronous belt, and a positioning synchronous pulley. The synchronous belt is sleeved on the motor synchronous pulley and the positioning synchronous pulley. The rotation of the motor synchronous pulley drives the positioning synchronous pulley to rotate. The positioning synchronous pulley is connected to and drives the rotating wheel to rotate.

[0023] By adopting the above technical solution, and by setting up a motor synchronous pulley, a synchronous belt, and a positioning synchronous pulley, the motor synchronous pulley can drive the positioning synchronous pulley to rotate via the synchronous belt, and then the positioning synchronous pulley can drive the rotating wheel to rotate to feed the printing paper roll.

[0024] Optionally, rollers are provided on both sides of the first pressure roller and the second pressure roller, and the rollers are provided with paper feeding grooves corresponding to the positioning holes; a plurality of rollers for pressing paper are provided between the rollers.

[0025] By adopting the above technical solution, the roller is provided with a groove, and the groove corresponds to the positioning hole of the paper. This allows the operator to easily detect whether the paper in the printing roll has deviated during the paper feeding process. The grooves on both sides of the roller can also be used to abut and position the paper edges. Multiple rollers are set between the two rollers to press against the paper, which can ensure a balanced pressure and thus ensure smooth paper feeding, avoiding paper arching problems.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By placing a roll of printing paper with positioning holes inside the frame, one end of the paper roll can be laid flat to the paper feed end via the paper feed end and the pad plate. The positioning holes of the printing paper roll are fitted onto the teeth of the rotating wheel. The rotating wheel can be driven by the drive assembly to rotate and drive the printing paper roll to reciprocate. By setting the first pressure roller and the second pressure roller, the paper can be pressed down after the printing paper roll is placed to keep the paper flat. This can avoid paper arching during the printing process. The overall structure of the printer is compact, which can reduce the size of the printer. 2. The first fixing components are set on both sides of the frame, which can drive the two first paper pressing swing arms to lift upward when the first pressure roller is lifted, so that the second fixing column slides in the first guide groove, thereby driving the first support rod guide seat to compress the second spring to elastically abut against the first fixing seat, so that the first fixing seat rotates, thereby driving the first support rod to move downward to the pad, so as to facilitate the paper laying before the printer runs and the corresponding paper positioning holes to be fitted on the teeth, so as to ensure the flatness of the subsequent paper feeding; Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of a paper feeding mechanism for an inkjet printer disclosed in an embodiment of this application; Figure 2 for Figure 1 A side cross-sectional view of a paper feeding mechanism for an inkjet printer is shown. Figure 3 for Figure 1 A side view of the paper feeding mechanism of an inkjet printer is shown. Figure 4 for Figure 3 A magnified schematic diagram of part A in the paper feeding mechanism of an inkjet printer is shown. Figure 5 for Figure 1 An exploded view of a portion of the paper feed mechanism in an inkjet printer is shown. Figure 6 for Figure 1 This is a three-dimensional schematic diagram of the paper feeding mechanism of an inkjet printer from another angle.

[0028] Explanation of reference numerals in the attached figures: 10. Frame; 11. Paper feed end; 12. Paper feed end; 13. First fixed post; 14. First movable groove; 15. Third fixed post; 16. Fourth fixed post; 20. Printing roll paper; 21. Positioning hole; 30. Pad; 40. Rotating wheel; 41. Tooth; 50. Drive assembly; 51. Motor synchronous pulley; 52. Synchronous belt; 53. Positioning synchronous pulley; 60. First paper pressure roller assembly; 61. First paper pressure swing arm; 611. First guide groove; 62. First pressure roller component; 621. Roller; 6211 621. Paper feeding groove; 622. Roller; 63. First spring component; 70. Second paper pressing roller assembly; 71. Second paper pressing swing arm; 72. Second pressure roller component; 73. Third spring component; 80. First limiting rod; 90. First support rod; 100. First fixing assembly; 101. First fixing seat; 102. Second spring component; 103. First support rod guide seat; 1031. First engaging groove; 1032. Second fixing post; 110. Second limiting rod; 120. Second support rod; 130. Paper supporting rod. Detailed Implementation

[0029] The terminology used in the following embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this application refers to and includes any or all possible combinations of one or more of the listed items.

[0030] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0031] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0032] See Figure 1 and Figure 2 This application discloses a paper feeding mechanism for an inkjet printer, including: a frame 10, a printing roll 20, a pad 30, a rotating wheel 40, a drive assembly 50, a first paper pressing wheel assembly 60, and a second paper pressing wheel assembly 70.

[0033] The frame 10 includes a paper feed end 11 and a paper feed end 12. Printing roll 20 is housed within the frame 10 at the paper feed end 11. A pad 30 is positioned above the frame 10 between the paper feed end 11 and the paper feed end 12. A rotating wheel 40 is mounted on the frame 10 and located below the pad 30, and is driven by a drive assembly 50 mounted on the frame 10. The rotating wheel 40 has teeth 41 at both ends, and corresponding positioning holes 21 are provided on both sides of the printing roll 20. The printing roll 20 moves along the sides during paper feeding. Positioning holes 21 are inserted into teeth 41 in sequence to drive the printing roll paper 20 to feed. The first paper pressing roller assembly 60 is set at the paper feeding end 12, and the second paper pressing roller assembly 70 is set at the paper inlet end 11. The arrangement of the two can press the printing roll paper 20 that passes through the paper inlet end 11 and covers the pad 30 during paper feeding, and then press the printing roll paper 20 that passes through the paper feeding end 12. This can ensure the flatness of the paper feeding, avoid paper arching problems, and make the overall structure of the printer compact and the size small.

[0034] See Figure 3 The first paper pressing roller assembly 60 includes a first paper pressing lever 61 and a first paper pressing roller 62. The first paper pressing lever 61 is arranged on both sides of the frame 10, that is, there are two of them. One end of the first paper pressing lever 61 is movably connected to the frame 10, and the other end is connected to the first paper pressing roller 62 located at the paper feed end 11, which allows the operator to easily lift the first paper pressing roller 62 to adjust the position of the printing roll paper 20.

[0035] The first paper pressing roller assembly 60 also includes a first spring member 63, one end of which is fixed to the side of the frame 10 and the other end is connected to the first paper pressing swing rod 61. A first fixing post 13 is provided on the side of the frame 10 corresponding to the first spring member 63.

[0036] Specifically, the first spring member 63, as Figure 3 The spring shown has a first fixed post 13 that can fix one end of the first spring 63 to the frame 10. The other end of the first spring 63 is connected to the first paper-pressing lever 61. When the operator raises and lowers the first paper-pressing lever 61, the rebound force of the first spring 63 can save effort.

[0037] See Figure 1 An inkjet printer paper feeding mechanism further includes a first support rod 90 and a first fixing component 100 at the paper feed end 11. The first support rod 90 is close to the pad 30 and its two ends pass through the frame 10 and are fixed to the first fixing component 100. The frame 10 is provided with a first movable groove for the first support rod 90 to pass through.

[0038] See also Figure 4 and Figure 5 The first fixing component 100 includes a first fixing seat 101, a second spring member 102, and a first support rod guide seat 103, each of which is provided in pairs corresponding to both sides of the frame 10. The two first fixing seats 101, for example, rolling bearings, are movably fixed to both sides of the frame 10. One end of each of the two second spring members 102 is connected to one of the two first fixing seats 101. One end of each of the two first support rod guide seats 103 is connected to the other end of each of the two first springs. The other end of each of the two first support rod guide seats 103 is provided with a first engaging groove 1031 for engaging the side of the frame 10. Each of the two first support rod guide seats 103 is provided with a second fixing post 1032, and the two sides of the frame 10 are provided with a third fixing post 14 for engaging the first engaging groove 1031. The second paper-pressing swing rod 71 is provided with a first guide groove 611 for inserting the second fixing post 1032. The first guide groove 611 can be described as follows: Figure 4 The shape shown.

[0039] Thus, when the first pressure roller 62 is lifted, the first pressure roller 62 drives the two first paper-pressing swing rods 61 to lift upwards, and the second fixed column 1032 slides in the first guide groove 611 to drive the first support rod guide seat 103 to squeeze the second spring 102 to abut against the first fixed seat 101 and rotate. At the same time, it drives the first support rod 90 to move downwards towards the pad 30, so as to facilitate the paper laying before the printer runs and the corresponding paper positioning hole 21 to be fitted onto the tooth 41 to ensure the flatness of the subsequent paper feeding.

[0040] See Figure 1 Rollers 621 are provided on both sides of the first pressure roller 62. The rollers 621 are provided with paper feeding grooves 6211 corresponding to the positioning holes 21, and multiple rollers 622 for pressing paper are provided between the rollers 621.

[0041] The groove on the roller 621 corresponds to the positioning hole 21 of the paper, which allows the operator to easily check whether the paper of the printing roll 20 is deviated during the paper feeding process. The paper feeding groove 6211 on both sides of the roller 621 can abut and position the edge of the paper. Multiple rollers 622 are set between the two rollers 621 to press against the paper, which can ensure the pressure balance, thereby ensuring smooth paper feeding and avoiding paper arching problems.

[0042] See Figure 3 and Figure 4 The second paper pressing roller assembly 70 includes a second paper pressing lever 71 and a second paper pressing roller 72. The second paper pressing lever 71 is arranged on both sides of the frame 10, that is, there are two of them. One end of the second paper pressing lever 71 is movably connected to the frame 10, and the other end is connected to the second paper pressing roller 72 located at the paper feeding end 12, which allows the operator to easily lift the second paper pressing roller 72 to adjust the position of the printing roll paper 20.

[0043] The second paper pressing roller assembly 70 also includes a third spring member 73, one end of which is fixed to the side of the frame 10 and the other end is connected to the second paper pressing swing arm 71. A fourth fixing post 15 is provided on the side of the frame 10 corresponding to the third spring member 73.

[0044] Specifically, the third spring member 73 is as follows: Figure 3 The spring shown, with the fourth fixing post 15, can fix one end of the first spring 63 to the frame 10, and the other end of the third spring 73 is connected to the second paper-pressing lever 71. When the operator raises and lowers the second paper-pressing lever 71, the rebound force of the third spring 73 can save effort.

[0045] See Figure 2 An inkjet printer paper feeding mechanism also includes a second support rod 120 located at the paper feeding end 11 at the paper feeding end 12. The second support rod 120 is close to the pad 30 and its two ends pass through the frame 10 to be fixed with the second paper pressing swing rod 71, so as to cooperate with the pad 30 to support the paper roll 20.

[0046] See Figure 1 and Figure 6 Two drive components 50 are provided, located on both sides of the frame 10 respectively. The drive component 50 includes a motor synchronous pulley 51, a synchronous belt 52 and a positioning synchronous pulley 53. The synchronous belt 52 is sleeved on the motor synchronous pulley 51 and the positioning synchronous pulley 53. The rotation of the motor synchronous pulley 51 drives the positioning synchronous pulley 53 to rotate. The positioning synchronous pulley 53 is connected to and drives the rotating wheel 40 to rotate.

[0047] The system includes a motor synchronous pulley 51, a synchronous belt 52, and a positioning synchronous pulley 53. The motor synchronous pulley 51 drives the positioning synchronous pulley 53 to rotate via the synchronous belt 52, which in turn drives the rotating wheel 40 to rotate, thereby feeding the printing paper roll 20.

[0048] See Figure 2 An inkjet printer paper feeding mechanism further includes a first limiting rod 80 and a second limiting rod 110 fixed on the frame 10, a pad 30 located between the first limiting rod 80 and the second limiting rod 110, and the first limiting rod 80 located at the paper feeding end 12 and the second limiting rod 110 located at the paper infeed end 11.

[0049] In this process, one end of the paper roll 20 feeds from below the second limiting rod 110, passes through the pad 30, and then feeds from below the first limiting rod 80. This can limit and press the paper roll 20 to further maintain the flatness of the paper and prevent paper arching.

[0050] See Figure 2 and Figure 6 A paper feeding mechanism for an inkjet printer also includes paper support rods 130. The paper support rods 130 can be configured as two rods, both located inside the frame 10 at the paper feed end 11, supporting the printing roll 20 below it. The positions of the two paper support rods 130 can be set according to the thickness of the printing roll 20, and are not limited here.

[0051] Additionally, it is worth mentioning that, see Figure 1 Rollers 621 are provided on both sides of the first pressure roller 62 and the second pressure roller 72. The rollers 621 are provided with paper feeding grooves 6211 corresponding to the positioning holes 21. Multiple rollers 622 for pressing paper are provided between the rollers 621, which can facilitate the operator to check whether the paper of the printing roll 20 is deviated during paper feeding, and the grooves on both sides of the rollers 621 can abut and position the paper edges. The multiple rollers 622 between the two rollers 621 press the paper to ensure the pressure balance, thereby ensuring smooth paper feeding and avoiding paper arching.

[0052] In summary, the inkjet printer paper feeding mechanism disclosed in this application accommodates a printing roll 20 with positioning holes 21 within the frame 10. One end of the paper roll 20 can be laid flat at the paper feed end 12 via the paper inlet end 11 and the pad 30. The positioning holes 21 of the printing roll 20 are fitted onto the teeth 41 of the rotating wheel 40. The rotating wheel 40 can be driven to rotate via the drive assembly 50 to drive the printing roll 20 to reciprocate. By setting the first pressure roller 62 and the second pressure roller 72, the paper can be pressed down after the printing roll 20 is placed to maintain its flatness. This avoids paper arching during the printing process. The overall structure of the printer is compact, which can reduce the size of the printer.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A paper feeding mechanism for an inkjet printer, characterized in that, include: The frame (10) includes a paper feed end (11) and a paper feed end (12). Printing roll paper (20) is housed within the frame (10) and located at the paper feed end (11). A pad (30) is disposed above the frame (10) and between the paper feed end (11) and the paper feed end (12), wherein one end of the printing roll paper (20) passes through the paper feed end (11) and covers the pad (30), and then passes through the paper feed end (12); A rotating wheel (40) is provided on the frame (10) and located below the pad (30). The rotating wheel (40) has teeth (41) at both ends. The printing roll (20) has positioning holes (21) on both sides. When the printing roll (20) is feeding, the positioning holes (21) on both sides pass through the teeth (41) in sequence to drive the printing roll (20) to feed. A drive assembly (50) is mounted on the frame (10) and connected to the rotating wheel (40) for driving the rotating wheel (40) to rotate; The first paper pressing roller assembly (60) includes a first paper pressing swing rod (61) and a first paper pressing roller (62). There are two first paper pressing swing rods (61), which are located on both sides of the frame (10). One end of the first paper pressing swing rod (61) is movably connected to the frame (10), and the other end is connected to the first paper pressing roller (62). The first paper pressing roller (62) is located at the paper feeding end (12). The second paper pressing roller assembly (70) includes a second paper pressing swing rod (71) and a second paper pressing roller (72). There are two second paper pressing swing rods (71), which are located on both sides of the frame (10). One end of the second paper pressing swing rod (71) is movably connected to the frame (10), and the other end is connected to the second paper pressing roller (72). The second paper pressing roller (72) is located at the paper feeding end (11). The first paper pressing roller assembly (60) further includes: The first spring member (63) has one end fixed to the side of the frame (10) and the other end connected to the first paper pressing swing rod (61). The side of the frame (10) is provided with a first fixing post (13) corresponding to the first spring member (63). It also includes: a first support rod (90) and a first fixing component (100) located at the paper feed end (12), the first support rod (90) being close to the pad (30) and having both ends passing through the frame (10) and fixed to the first fixing component (100), wherein the frame (10) is provided with a first movable groove corresponding to the first support rod (90) for the first support rod (90) to pass through; the first fixing component (100) includes: Two first fixing seats (101) are provided, and the two first fixing seats (101) are respectively movably fixed on both sides of the frame (10); Two second spring members (102) are provided, and one end of each second spring member (102) is connected to one of the two first fixing seats (101). Two first support rod guide seats (103) are provided. One end of each of the two first support rod guide seats (103) is connected to the other end of the two second springs. The other end of each of the two first support rod guide seats (103) is provided with a first engaging groove (1031) for engaging and fixing the side of the frame (10). Each of the two first support rod guide seats (103) is provided with a second fixing post (1032). The two sides of the frame (10) are provided with a third fixing post (14) for engaging the first engaging groove (1031). The first paper pressing swing rod (61) is provided with a first guide groove (611) for inserting the second fixing post (1032). When the first pressure roller (62) is lifted, the first pressure roller (62) drives the two first paper-pressing swing rods (61) to lift upward, and the second fixed column (1032) slides in the first guide groove (611) to drive the first support rod guide seat (103) to compress the second spring (102) to abut against the first fixed seat (101) and rotate, while driving the first support rod (90) to move downward to the pad (30).

2. The paper feeding mechanism of an inkjet printer according to claim 1, characterized in that, Also includes: A first limiting rod (80) is fixed on the frame (10) and located at the paper feed end (11), wherein one end of the paper of the printing roll (20) feeds from below the first limiting rod (80).

3. The paper feeding mechanism of an inkjet printer according to claim 1, characterized in that, The second pressure roller assembly (70) includes: The third spring member (73) is fixed at one end to the side of the frame (10) and connected at the other end to the second paper pressing swing rod (71). A fourth fixing post (15) is provided on the side of the frame (10) corresponding to the third spring member (73).

4. The paper feeding mechanism of an inkjet printer according to claim 3, characterized in that, Also includes: The second limiting rod (110) is fixed on the frame (10) and located at the paper feed end (12), wherein one end of the paper of the printing roll (20) feeds from below the second limiting rod (110).

5. The paper feeding mechanism of an inkjet printer according to claim 3, characterized in that, It also includes a second support rod (120) located at the paper feed end (11), the second support rod (120) being close to the pad (30) and having both ends passing through the frame (10) and fixed to the second paper pressing swing rod (71).

6. The paper feeding mechanism of an inkjet printer according to claim 1, characterized in that, Also includes: Paper support rod (130), which is disposed in the frame (10) and located at the paper feed end (11), is used to support the printing roll paper (20).

7. The paper feeding mechanism of an inkjet printer according to claim 1, characterized in that, The drive assembly (50) is configured as two, located on both sides of the frame (10). The drive assembly (50) includes: a motor synchronous pulley (51), a synchronous belt (52) and a positioning synchronous pulley (53). The synchronous belt (52) is sleeved on the motor synchronous pulley (51) and the positioning synchronous pulley (53). The rotation of the motor synchronous pulley (51) drives the positioning synchronous pulley (53) to rotate. The positioning synchronous pulley (53) is connected to and drives the rotating wheel (40) to rotate.

8. The paper feeding mechanism of an inkjet printer according to claim 2, characterized in that, Both sides of the first pressure roller (62) and the second pressure roller (72) are provided with rollers (621), and the rollers (621) are provided with paper feeding grooves (6211) corresponding to the positioning holes (21). Multiple rollers (622) for pressing paper are arranged between the rollers (621).

Images