A pull gauge device and a printer
Patent Information
- Application Number
- CN202611025436.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-10
- Publication Date
- 2026-08-21
AI Technical Summary
[0003]现有技术中,拉规装置在进行拉规作业时,需要利用前规先限制纸张的前后位置,再定位纸张的横向位置,拉规效率低下,导致打印效率降低,同时需在横向同时设置两套拉规装置,拉规与前规相互配合,从纸张横向双向及输送方向三向定位纸张,若纸张规格发生变化,将导致定位直接失效
本发明所提供的拉规装置,定位基准件安装于机架且沿第一方向延伸,第一方向垂直于竖直方向,传送带的传送方向由进口端到出口端向定位基准件一侧偏移,拉规抵压组件安装于机架且与传送带的上带面夹设形成纸张拉规空间,位于纸张拉规空间内的纸张的侧壁能够在纸张沿传送带的进口端移动到出口端时接触定位基准件,从而进入纸张拉规空间内的纸张,被传送带输送而由传送带的进口端移动至出口端时,不仅沿第一方向移动,同时朝向定位基准件移动,使得纸张朝向定位基准件的侧壁逐渐贴合定位基准件,在纸张将要从输送带的出口端移动出纸张拉规空间纸张朝向定位基准件的侧壁完全贴合定位基准件的侧壁,进而完成对纸张的拉规定位,拉规抵压组件在纸张于纸张拉规空间内防止纸张翘起,使纸张仅能够向传送带的出口端及定位基准件方向移动,因在纸张的移动过程中完成对纸张的定位,实现纸张横向单向定位,而不需要在纸张横向双向及输送方向三向定位纸张,能够提高纸张的拉规效率,同时只要纸张的侧壁能够完全贴合定位基准件的侧壁,不同规格的纸张均能够被定位基准件定位。
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Figure CN122607007A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of printer technology, and more particularly to a pull gauge device and a printer. Background Technology
[0002] For professional printing equipment such as sheetfed offset printing presses and commercial printing presses, when the paper enters the printing unit, a pull gauge device is needed to accurately position the paper laterally (relative to the transport direction). The paper edge is pulled or pushed from the side to make it close to the positioning reference, thereby achieving lateral alignment and ensuring accurate multicolor registration.
[0003] In the existing technology, when the paper guide device performs the paper guide operation, it is necessary to use the front guide to first restrict the front and rear position of the paper, and then position the paper laterally. The paper guide efficiency is low, which leads to a decrease in printing efficiency. At the same time, two sets of paper guide devices need to be set up in the lateral direction. The paper guide and the front guide cooperate with each other to position the paper in three directions: the lateral direction, the transport direction, and the direction of paper movement. If the paper size changes, the positioning will fail directly.
[0004] Therefore, there is an urgent need for a pull gauge device and printer to solve the above problems. Summary of the Invention
[0005] The purpose of this invention is to provide a paper guide device and printer that can achieve unidirectional horizontal paper positioning, without the need for bidirectional horizontal paper positioning and three-directional paper positioning in the conveying direction, thereby improving paper guide efficiency and being applicable to different paper sizes.
[0006] To achieve this objective, the present invention adopts the following technical solution: In a first aspect, a guide device is provided for guiding and positioning paper, the guide device comprising: frame, A positioning reference component is mounted on the frame and extends along a first direction, which is perpendicular to the vertical direction. A conveyor belt configured to convey the paper, the conveying direction of the conveyor belt being offset from the inlet end to the outlet end toward the positioning reference member, and the upper surface of the conveyor belt being used to support the paper. A paper guide pressing assembly is installed on the frame and clamped with the upper belt surface to form a paper guide space. The side wall of the paper located in the paper guide space can contact the positioning reference member when the paper moves from the inlet end to the outlet end along the conveyor belt.
[0007] In some embodiments, the paper gauge pressing assembly includes a first paper pressing ball and a first mounting frame. The first mounting frame is mounted on the frame and has a first ball loading groove. The first paper pressing ball is movably connected to the first ball loading groove and can make point contact with the paper located in the paper gauge space.
[0008] In some embodiments, the pull gauge pressing assembly further includes a ball loading member, which is mounted on the first mounting frame and has a second ball loading groove therein. The first ball loading groove and the second ball loading groove surround each other to form a ball loading space for accommodating the first paper pressing ball.
[0009] In some embodiments, the first mounting bracket is movably connected to the frame in a vertical direction.
[0010] In some embodiments, the paper guide pressing assembly further includes a paper pressing member, which and the upper belt surface are clamped together to form the paper guide space.
[0011] In some embodiments, at least two of the first paper-pressing balls are spaced apart to form a first ball group, the extension direction of the first ball group being the same as the transmission direction of the conveyor belt.
[0012] In some embodiments, the center line of the bandwidth of the upper surface coincides with the projection of the line connecting the centers of any two first paper-pressing balls in the vertical direction.
[0013] In some embodiments, the first pressing ball includes a first pressing ball and a second pressing ball, wherein the first pressing ball and the second pressing ball have the same volume, and the density of the first pressing ball is greater than that of the second pressing ball.
[0014] In some embodiments, the pull gauge device further includes an inlet pressing component, which includes a second paper pressing ball and a second mounting frame. The second mounting frame is mounted on the frame and located at the inlet end of the conveyor belt. A third ball loading groove is provided on the second mounting frame. The second paper pressing ball is movably connected to the third ball loading groove. The second mounting frame and the frame enclose a paper inlet space, which communicates with the paper pull gauge space. The second paper pressing ball presses against the paper located in the paper inlet space. And / or the pull gauge device further includes an outlet pressing component, which includes a third paper pressing ball and a third mounting frame. The third mounting frame is mounted on the frame and located at the outlet end of the conveyor belt. A fourth ball loading groove is provided on the third mounting frame. The third paper pressing ball is movably connected to the fourth ball loading groove. The third mounting frame and the frame enclose a paper outlet space, which communicates with the paper pull gauge space. The third paper pressing ball presses against the paper located in the paper outlet space.
[0015] Secondly, a printer is provided, including a body and the aforementioned pull gauge device, wherein the frame of the pull gauge device is mounted on the body.
[0016] The beneficial effects of this invention are: The paper guide device provided by this invention has a positioning reference component mounted on the frame and extending along a first direction perpendicular to the vertical direction. The conveyor belt's conveying direction shifts from the inlet end to the outlet end towards the positioning reference component. A paper guide pressing component is mounted on the frame and clamped with the upper surface of the conveyor belt to form a paper guide space. The sidewall of the paper located in the paper guide space can contact the positioning reference component when the paper moves from the inlet end to the outlet end of the conveyor belt. Thus, when the paper enters the paper guide space and is conveyed by the conveyor belt from the inlet end to the outlet end, it not only moves along the first direction but also moves towards the positioning reference component, causing the paper to gradually adhere to the sidewall of the positioning reference component. The positioning reference component ensures that the paper is fully aligned with the side wall of the positioning reference component as it moves out of the paper guide space from the exit end of the conveyor belt. This completes the paper's positioning and stretching. The guide pressing component prevents the paper from lifting within the paper guide space, allowing it to move only towards the exit end of the conveyor belt and the positioning reference component. Because the paper is positioned during its movement, it achieves unidirectional lateral positioning, eliminating the need for bidirectional lateral positioning and three-directional positioning in the conveying direction. This improves the paper's positioning efficiency. Furthermore, as long as the side wall of the paper is fully aligned with the side wall of the positioning reference component, different sizes of paper can be positioned by the positioning reference component.
[0017] The printer provided by the present invention includes a body and a guide device. The frame of the guide device is mounted on the body, thereby enabling the guide device to guide and position different sizes of paper before the paper enters the printing end, and has extremely high guide efficiency. Attached Figure Description
[0018] Figure 1 This is a side view of the pull gauge device provided in an embodiment of the present invention; Figure 2 This is a side view of the pressure-absorbing component provided in an embodiment of the present invention; Figure 3 This is a top view of the pressure-absorbing component provided in an embodiment of the present invention; Figure 4 yes Figure 3 A sectional view along the AA direction; Figure 5 This is a top view of the pull gauge device provided in an embodiment of the present invention; Figure 6 yes Figure 5 A sectional view along the BB direction; Figure 7 yes Figure 5A cross-sectional view along the CC direction.
[0019] In the picture: 1. Rack; 2. Positioning reference components; 3. Conveyor belt; 31. Upper belt surface; 4. Pull gauge pressing assembly; 41. First paper pressing ball; 42. First mounting bracket; 421. First ball loading groove; 43. Ball loading component; 431. Second ball loading groove; 44. Paper pressing component; 5. Imported pressure-reducing components; 51. Second paper-pressing ball; 52. Second mounting bracket; 521. Third ball-loading groove; 6. Export pressure assembly; 61. Third paper ball; 62. Third mounting bracket; 621. Fourth ball loading trough. Detailed Implementation
[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0021] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0022] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0024] Figure 1 A side view of the pull gauge device provided in an embodiment of the present invention is shown. Figure 1 As shown, this embodiment provides a paper guide device for guiding and positioning paper. The paper guide device includes a frame 1, a positioning reference member 2, a conveyor belt 3, and a paper guide pressing assembly 4. The positioning reference member 2 is mounted on the frame 1 and extends along a first direction, which is perpendicular to the vertical direction. The conveyor belt 3 is configured to convey paper, and the conveying direction of the conveyor belt 3 is offset from the inlet end to the outlet end towards the positioning reference member 2. The upper surface 31 of the conveyor belt 3 is used to support the paper. The paper guide pressing assembly 4 is mounted on the frame 1 and clamps with the upper surface 31 to form a paper guide space. The sidewall of the paper located in the paper guide space can contact the positioning reference member 2 when the paper moves along the inlet end to the outlet end of the conveyor belt 3.
[0025] In this embodiment, the paper guide device has a positioning reference 2 mounted on the frame 1 and extending along a first direction perpendicular to the vertical direction. The conveying direction of the conveyor belt 3 shifts from the inlet end to the outlet end towards the positioning reference 2. The paper guide pressing assembly 4 is mounted on the frame 1 and clamps with the upper belt surface 31 of the conveyor belt 3 to form a paper guide space. The sidewall of the paper located in the paper guide space can contact the positioning reference 2 when the paper moves from the inlet end to the outlet end along the conveyor belt 3. Thus, the paper entering the paper guide space is conveyed by the conveyor belt 3 and moves from the inlet end to the outlet end of the conveyor belt 3. It not only moves along the first direction but also moves towards the positioning reference 2, so that the paper moves towards the sidewall of the positioning reference 2. As the paper gradually comes into contact with the positioning reference 2, it completely adheres to the side wall of the positioning reference 2 as it moves out of the paper pull gauge space from the exit end of the conveyor belt. This completes the paper's pull and positioning. The pull gauge pressing component 4 prevents the paper from lifting within the paper pull gauge space, allowing the paper to move only towards the exit end of the conveyor belt 3 and the positioning reference 2. Because the paper is positioned during its movement, it achieves unidirectional transverse positioning, eliminating the need for bidirectional transverse positioning and three-directional positioning in the conveying direction. This improves the paper's pull efficiency. Furthermore, as long as the side wall of the paper can completely adhere to the side wall of the positioning reference 2, papers of different specifications can be positioned by the positioning reference 2.
[0026] It should be noted that the upper surface 31 of the conveyor belt 3 provided in this embodiment is in direct contact with the paper and is used to support and transport the paper. As the conveyor belt 3 rotates continuously, the surface corresponding to the upper surface 31 of the conveyor belt 3 also changes accordingly.
[0027] Figure 2 A side view of the pull gauge pressing assembly 4 provided in an embodiment of the present invention is shown. Figure 3 A top view of the pull gauge pressing assembly 4 provided in an embodiment of the present invention is shown. Figure 4 It shows Figure 3 A sectional view along the AA direction. (e.g.) Figures 1 to 4As shown, the pull gauge pressing assembly 4 includes a first paper pressing ball 41 and a first mounting frame 42. The first mounting frame 42 is installed on the frame 1 and has a first ball loading groove 421. The first paper pressing ball 41 is movably connected in the first ball loading groove 421 and can make point contact with the paper located in the paper pull gauge space. Thus, when moving in the paper pull gauge space, the first paper pressing ball 41 presses against the paper due to gravity, so that the paper can reliably move towards the positioning reference 2 and the exit end of the conveyor belt 3 respectively. At the same time, because the first paper pressing ball 41 is movably connected in the first ball loading groove 421, it can rotate freely and will not hinder the paper from moving in the horizontal direction, thereby improving the pulling and positioning effect of the pull gauge device. It should be noted that in this embodiment, the movable connection between the first paper pressing ball 41 and the first ball loading groove 421 is not fixed. Those skilled in the art can reasonably set it according to actual needs. In some embodiments, a first through hole is provided on the bottom wall of the first ball loading groove 421. The first paper pressing ball 41 is placed in the first ball loading groove 421. Due to the influence of gravity, part of the first paper pressing ball 41 protrudes from the first ball loading groove 421 through the first through hole. The part protruding from the first ball loading groove 421 is used to press the paper in the paper pull gauge space.
[0028] Preferably, the pull gauge pressing assembly 4 further includes a ball-loading component 43, which is installed on the first mounting frame 42 and has a second ball-loading groove 431 inside. The first ball-loading groove 421 and the second ball-loading groove 431 surround to form a ball-loading space for accommodating the first paper-pressing ball 41, thereby enabling the first paper-pressing ball 41 to be placed into the ball-loading space and preventing the first paper-pressing ball 41 from being ejected from the first ball-loading groove 421 due to vibration during the operation of the pull gauge device, thereby improving the reliability of the pull gauge device.
[0029] Furthermore, the ball-loading component 43 is detachably connected to the first mounting bracket 42. When the first paper-pressing ball 41 wears out due to prolonged paper pressing, the ball-loading component 43 can be removed to replace the first paper-pressing ball 41, improving the ease of maintenance of the pull gauge device. It should be noted that the connection method between the ball-loading component 43 and the first mounting bracket 42 is not limited. It can be a threaded connection, a snap-fit connection, or an adhesive connection, as long as the ball-loading component 43 can be removed from the first mounting bracket 42 when the first paper-pressing ball 41 needs to be replaced. Those skilled in the art can reasonably set it according to actual needs, and it will not be elaborated here.
[0030] Preferably, the first mounting bracket 42 is movably connected to the frame 1 in the vertical direction, thereby allowing the height of the first mounting bracket 42 to be adjusted so that the first paper pressing ball 41 can reliably press against the paper. This prevents the first paper pressing ball 41 from failing to press against the paper when the tensioning device is handling paper of different thicknesses due to slight changes in paper thickness. Specifically, one of the first mounting bracket 42 and the frame 1 has a groove extending in the vertical direction, and the other has a through hole corresponding to the groove. Bolts pass through the groove and the through hole and are connected to nuts to achieve locking between the mounting bracket and the frame 1. When it is necessary to adjust the position of the first mounting bracket 42 in the vertical direction, the bolts can be turned to adjust, and then the bolts can be turned back to lock the first mounting bracket 42 and the frame 1 again.
[0031] When the first pressure ball 41 presses against the paper located within the paper guide space, the paper not pressed by the first pressure ball 41 may still be lifted, potentially causing a paper jam. To solve the above technical problem, continue as follows... Figures 1 to 4 As shown, the paper guide pressing assembly 4 also includes a paper pressing component 44, which is clamped with the upper belt surface 31 to form a paper guide space, thereby preventing the portion of the paper not pressed by the first paper pressing ball 41 from lifting up.
[0032] Continue as Figures 1 to 4 As shown, at least two first pressure balls 41 are spaced apart to form a first ball group. The extension direction of the first ball group is the same as the transmission direction of the conveyor belt 3. Therefore, after the paper enters the paper guide space, the position pressed by the first pressure balls 41 can be continuously pressed by all the first pressure balls 41 in sequence. This allows the sidewall of the paper corresponding to the pressed position to move stably closer to the positioning reference member 2, improving the guide effect. It should be noted that in this embodiment, the number of first pressure balls 41 in the first ball group is not limited; it can be two, three, four, eleven, twenty, or even more. Those skilled in the art can reasonably set it according to the actual needs of the guide, which will not be elaborated further here.
[0033] Preferably, the center line of the bandwidth of the upper belt surface 31 coincides with the projection of the connecting line between the centers of any two first paper pressing balls 41 in the vertical direction, so that the first paper pressing ball 41 presses against the center line of the bandwidth of the upper belt surface 31, avoiding the first paper pressing ball 41 pressing against other positions of the conveyor belt 3, which would create a lever arm with the conveyor belt 3 and interfere with the movement of the paper.
[0034] For some large-sized papers, the front end of the paper may have already entered the printing end and started printing, but the back end of the paper is still moving in the paper pulling space of the pulling device. If the pressure exerted on the paper by several first pressure balls 41 is completely consistent, it will cause a slight printing offset of the back end of the paper relative to the front end. To solve the above technical problem, preferably, the first pressure ball 41 includes a first pressure ball and a second pressure ball. The first pressure ball and the second pressure ball have the same volume, and the density of the first pressure ball is greater than that of the second pressure ball. After the first pressure ball and the second pressure ball are movably connected to the first ball loading groove 421, since the first pressure ball and the second pressure ball have the same volume and the density of the first pressure ball is greater than that of the second pressure ball, they can apply different levels of pressure to the paper. During the factory debugging of the pulling device, the debugging personnel can selectively put the first pressure ball or the second pressure ball into each first ball loading groove 421. Through continuous debugging, the pressure exerted on the paper can be balanced, thereby eliminating the slight printing offset. Specifically, the first pressure ball is a steel ball, and the second pressure ball is a nylon plastic ball. The steel ball and the nylon plastic ball have the same volume, but the steel ball has a higher density than the nylon plastic ball. Therefore, the steel ball exerts greater pressure on the paper compared to the nylon plastic ball. It should be noted that the specific types of the first and second pressure balls are not limited here, as long as they are wear-resistant, have the same volume, and the first pressure ball has a higher density than the second pressure ball. Further details will not be elaborated upon here.
[0035] Figure 5 A top view of the pull gauge device provided in an embodiment of the present invention is shown. Figure 6 It shows Figure 5 A sectional view along the BB direction. (e.g.) Figure 5 and Figure 6 As shown, the printer also includes an inlet pressing component 5, which includes a second paper pressing ball 51 and a second mounting frame 52. The second mounting frame 52 is installed on the frame 1 and located at the inlet end of the conveyor belt 3. A third ball loading groove 521 is provided on the second mounting frame 52. The second paper pressing ball 51 is movably connected to the third ball loading groove 521. The second mounting frame 52 and the frame 1 enclose a paper inlet space, which is connected to the paper guide space. The second paper pressing ball 51 presses against the paper located in the paper inlet space, so that the paper is pressed against by the second paper pressing ball 51 before entering the paper guide space, thus preventing the paper from being unable to enter the paper guide space due to curling.
[0036] Preferably, at least two second paper-pressing balls 51 are spaced apart in a horizontal direction perpendicular to the paper transport direction, thereby pressing the paper at multiple points to prevent the paper from curling.
[0037] Figure 7 It shows Figure 5 A sectional view along the CC direction. (e.g.) Figure 5 and Figure 7As shown, the printer also includes an exit pressing assembly 6, which includes a third paper pressing ball 61 and a third mounting frame 62. The third mounting frame 62 is mounted on the frame 1 and located at the exit end of the conveyor belt 3. A fourth ball loading groove 621 is provided on the third mounting frame 62. The third paper pressing ball 61 is movably connected to the fourth ball loading groove 621. The third mounting frame 62 and the frame 1 enclose a paper exit space, which is connected to the paper pull guide space. The third paper pressing ball 61 presses against the paper located in the paper exit space. Thus, during the process of the paper moving out of the paper pull guide space and moving to the printing end, the third paper pressing ball 61 can press against the paper located in the paper exit space, playing a transition role and preventing the paper from curling up and entering the printing end.
[0038] Preferably, at least two third paper-pressing balls 61 are spaced apart in a horizontal direction perpendicular to the paper transport direction, thereby pressing the paper at multiple points to prevent the paper from curling up.
[0039] This embodiment also provides a printer, including a body and a guide device. The frame 1 of the guide device is installed on the body, thereby enabling the guide device to guide and position different sizes of paper before the paper enters the printing end, and has extremely high guide efficiency.
[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. A guide device for pulling and positioning paper, characterized in that, The pull gauge device includes: Rack (1), Positioning reference component (2), the positioning reference component (2) is installed on the frame (1) and extends along a first direction, the first direction being perpendicular to the vertical direction; A conveyor belt (3) is configured to convey the paper. The conveying direction of the conveyor belt (3) is shifted from the inlet end to the outlet end toward the positioning reference (2). The upper belt surface (31) of the conveyor belt (3) is used to support the paper. A paper pull gauge pressing assembly (4) is installed on the frame (1) and clamped with the upper belt surface (31) to form a paper pull gauge space. The side wall of the paper located in the paper pull gauge space can contact the positioning reference member (2) when the paper moves from the inlet end to the outlet end along the conveyor belt (3).
2. The gauge device according to claim 1, characterized in that, The pull gauge pressing assembly (4) includes a first paper pressing ball (41) and a first mounting frame (42). The first mounting frame (42) is installed on the frame (1) and has a first ball loading groove (421). The first paper pressing ball (41) is movably connected in the first ball loading groove (421) and can make point contact with the paper located in the paper pull gauge space.
3. The gauge device according to claim 2, characterized in that, The pull gauge pressing assembly (4) also includes a ball loading component (43), which is installed on the first mounting frame (42) and has a second ball loading groove (431) inside. The first ball loading groove (421) and the second ball loading groove (431) surround each other to form a ball loading space for accommodating the first paper pressing ball (41).
4. The gauge device according to claim 2, characterized in that, The first mounting bracket (42) is movably connected to the frame (1) in the vertical direction.
5. The gauge device according to claim 2, characterized in that, The pull gauge pressing assembly (4) also includes a paper pressing component (44), which and the upper belt surface (31) are clamped to form the paper pull gauge space.
6. The gauge device according to claim 2, characterized in that, At least two of the first paper-pressing balls (41) are spaced apart to form a first ball group, and the extension direction of the first ball group is the same as the transmission direction of the conveyor belt (3).
7. The gauge device according to claim 6, characterized in that, The center line of the bandwidth of the upper surface (31) coincides with the projection of the line connecting the centers of any two first paper-pressing balls (41) in the vertical direction.
8. The gauge device according to claim 6, characterized in that, The first paper-pressing ball (41) includes a first pressing ball and a second pressing ball. The first pressing ball and the second pressing ball have the same volume, and the density of the first pressing ball is greater than that of the second pressing ball.
9. The gauge device according to any one of claims 1-8, characterized in that, The paper guide device further includes an inlet pressing component (5), which includes a second paper pressing ball (51) and a second mounting frame (52). The second mounting frame (52) is installed on the frame (1) and located at the inlet end of the conveyor belt (3). A third ball loading groove (521) is provided on the second mounting frame (52). The second paper pressing ball (51) is movably connected to the third ball loading groove (521). The second mounting frame (52) and the frame (1) enclose a paper inlet space, which is connected to the paper guide space. The second paper pressing ball (51) presses against the paper located in the paper inlet space. / Or the pull gauge device further includes an outlet pressure component (6), the outlet pressure component (6) includes a third paper pressure ball (61) and a third mounting frame (62), the third mounting frame (62) is installed on the frame (1) and located at the outlet end of the conveyor belt (3), the third mounting frame (62) is provided with a fourth ball loading groove (621), the third paper pressure ball (61) is movably connected to the fourth ball loading groove (621), the third mounting frame (62) and the frame (1) enclose a paper outlet space, the paper outlet space is connected to the paper pull gauge space, and the third paper pressure ball (61) presses against the paper located in the paper outlet space.
10. A printer, characterized in that, It includes a body and a pull gauge device as described in any one of claims 1-9, wherein the frame (1) of the pull gauge device is mounted on the body.