tension rod assembly

Abstract

The utility model relates to a kind of tension rod assemblies;The tension rod assembly includes the tension shaft of transverse arrangement, symmetrically installed horizontal sliding component at the both ends of tension shaft;The horizontal sliding component includes the mounting seat plate with the side wall of printing equipment interface, horizontal slider, top pressure spring;Horizontal sliding groove is slidably matched with horizontal slider and is equipped in the middle part of mounting seat plate side face;Horizontal slider front side is connected with the rear side of tension shaft end, and rear side center is vertically installed with guide shaft;Horizontal sliding groove tail end is equipped with the guide hole slidably matched with guide shaft;Top pressure spring is arranged between horizontal sliding groove tail end and horizontal slider rear side, and is sleeved in guide shaft outside.The utility model provides a kind of tension rod assembly that can be horizontally pushed out, and can save work space.

Description

Technical Field

[0001] This utility model relates to the technical field of printing equipment accessories, and in particular to a tension bar assembly. Background Technology

[0002] Inside a printing device, the tension bar is a crucial component for maintaining the tension of the printing media. The tension roller ensures that the printing media on the printing platform is under appropriate tension for optimal printing results. Furthermore, the printing media is U-shaped, embracing the tension bar. When the winding / unwinding mechanism's progress exceeds that of the printing platform, the distance between the winding / unwinding mechanism and the printing platform increases; conversely, when the winding / unwinding mechanism's progress lags behind, the distance shortens. The tension bar changes position due to these changes in media length. Therefore, the positional change of the tension bar reflects the real-time length of the printing media between the winding / unwinding mechanism and the printing platform, thus reflecting the relationship between the winding / unwinding mechanism's progress and the printing platform's progress, which is beneficial for coordinating the working relationship between the printing platform and the winding / unwinding mechanism. Existing technology, such as the tension bar disclosed in the patent application CN113771509B for a dual-sided tension adjustment printing machine's loading and unloading roller assembly, uses a swing-arm structure. However, this tension bar occupies a significant amount of space when swinging, limiting its application. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned problems and provide a tension bar assembly.

[0004] The technical solution of this utility model is as follows: a tension rod assembly, installed between the side walls of a printing device, includes a horizontally arranged tension shaft and horizontal sliding components symmetrically installed at both ends of the tension shaft; the front side of the tension shaft is connected to the printing medium to adjust the tension of the printing medium; the horizontal sliding components allow the end of the tension shaft to slide horizontally; the horizontal sliding components include a mounting plate connected to the side wall of the printing device, a horizontal slider, and a top pressure spring; a horizontal groove is provided in the middle of the side of the mounting plate to slide with the horizontal slider; the horizontal slider slides horizontally along the horizontal groove; the front side of the horizontal slider is connected to the rear side of the end of the tension shaft; the forward sliding horizontal slider pushes the end of the tension shaft forward; the printing medium acts on the front side of the tension shaft, causing the horizontal slider to move backward; a guide shaft is vertically installed at the center of the rear side of the horizontal slider; a guide hole is provided at the tail end of the horizontal groove to slide with the guide shaft; the guide hole cooperates with the guide shaft to provide guidance for the sliding of the horizontal slider and also limits the horizontal slider in the left and right directions, improving the horizontal sliding stability of the tension shaft; the top pressure spring is set between the tail end of the horizontal groove and the rear side of the horizontal slider, and is sleeved on the outside of the guide shaft; the top pressure spring provides the power for the horizontal slider to move forward.

[0005] Preferably, the end of the horizontal slide is provided with a spring limiting groove corresponding to the guide hole; the rear end of the top pressure spring is inserted into the spring limiting groove to achieve a limit position, ensuring that the top pressure spring can function stably.

[0006] Furthermore, the tension bar assembly also includes a side cover and a connecting screw a; the spring limiting groove extends through the side of the mounting plate where the horizontal slide groove is located; the side cover is fastened to the spring limiting groove; the connecting screw a passes through the side cover and is threadedly connected to the mounting plate; this facilitates the installation of the horizontal slider and the top pressure spring onto the mounting plate.

[0007] Preferably, a buffer rubber column is installed on the inner wall of the front end of the horizontal slide groove to alleviate the impact caused by the forward sliding of the tension shaft end; the front end of the horizontal slide groove is provided with an installation through hole; the inner wall of the installation through hole extends inward with an annular retaining edge; the front end of the middle part of the buffer rubber column is provided with an annular retaining groove that matches the annular retaining edge; the annular retaining edge and the annular retaining groove cooperate with each other to realize the installation of the annular rubber column; the rear end of the buffer rubber column is a truncated cone with a smaller outer diameter and a larger inner diameter to better alleviate the impact caused by the tension shaft end; the front end of the buffer rubber column is a cone to facilitate better insertion into the installation through hole.

[0008] Preferably, a bearing with a horizontal sliding groove is coaxially mounted at the end of the tension shaft to reduce the sliding resistance of the tension shaft in the horizontal sliding groove; the height of the horizontal sliding groove = the height of the horizontal slider = the outer diameter of the bearing; the bearing slides more stably; the front side of the horizontal slider is provided with an arc-shaped snap-fit ​​surface that matches and connects with the outer side of the bearing, increasing the contact area between the horizontal slider and the bearing, and ensuring that the horizontal slider stably drives the bearing to rotate.

[0009] Furthermore, the horizontal slider has a mounting hole on its front side; the horizontal sliding component also includes an internal hexagon screw; the internal hexagon screw passes through the mounting hole and is threaded to the front end of the guide shaft; the guide shaft and the slider are detachable, which facilitates on-site assembly.

[0010] Furthermore, the horizontal groove extends horizontally through the other side of the mounting plate; a retaining ring extends inward from the edge of the horizontal groove on the other side of the mounting plate; this retaining ring horizontally limits the bearing and ensures stable operation of the bearing.

[0011] Furthermore, the horizontal sliding component also includes a synchronous gear and a synchronous rack; the synchronous gear is coaxially mounted at the end of the tension shaft; the synchronous rack is positioned below the synchronous gear along the length of the horizontal sliding groove and connects with the mounting plate; the synchronous gear and the synchronous rack mesh with each other; the synchronous gears and the synchronous rack at both ends of the tension shaft cooperate with each other to ensure that both ends of the tension shaft rotate at the same speed and slide horizontally synchronously.

[0012] Furthermore, the hub side of the synchronizing gear is threaded with a fastener; the end of the fastener abuts against the side of the tension shaft, thereby achieving coaxial connection between the synchronizing gear and the tension shaft.

[0013] Preferably, the horizontal sliding component further includes a photoelectric mounting plate and a connecting screw B; one end of the photoelectric mounting plate is connected to the top surface of the mounting base plate via the connecting screw B, and the bottom surface of the other end is equipped with a downward-facing photoelectric switch; when the end of the tension shaft passes under the photoelectric switch, it will trigger the photoelectric switch and send an electrical signal, indicating that the tension of the printing medium is less than the set value and the printing medium needs to be tightened quickly.

[0014] Furthermore, the end of the photoelectric mounting plate is provided with an adjustment elongated hole arranged in the front-to-back direction; the connecting screw passes through the adjustment elongated hole and connects with the top surface of the mounting base plate; the adjustment elongated hole enables the photoelectric switch to adjust its installation position, facilitating on-site machine adjustment.

[0015] Preferably, the horizontal sliding component further includes a connecting side plate and a connecting screw C; the connecting side plate is connected to the outer side of the mounting plate via the connecting screw C; the top of the connecting side plate is provided with an outwardly extending connecting plate for connecting to the side wall of the printing device; the connecting plate is provided with elongated connecting holes in the left and right directions to compensate for manufacturing errors and installation errors.

[0016] The beneficial effects of this utility model are as follows: The tension bar assembly of this utility model has the following advantages: (1) The front side of the tension shaft of this utility model is connected to the printing medium to adjust the tension of the printing medium; the horizontal sliding component makes the end of the tension shaft slide horizontally; the horizontal slider slides horizontally along the horizontal groove; the horizontal slider that slides forward pushes the end of the tension shaft forward; the printing medium acts on the front side of the tension shaft to make the horizontal slider move backward; the guide hole cooperates with the guide shaft to provide guidance for the sliding of the horizontal slider and also limits the horizontal slider in the left and right directions to improve the horizontal sliding stability of the tension shaft; the top pressure spring provides the power for the horizontal slider to move forward; (2) The side baffle of this utility model is fastened to the spring limiting groove; the connecting screw passes through the side baffle and is threadedly connected to the mounting plate; this makes it easy for the horizontal slider and the top pressure spring to be installed on the mounting plate. Attached Figure Description

[0017] Figure 1 This is a front view of the tension bar assembly of this utility model; Figure 2 yes Figure 1 AA section view; Figure 3 yes Figure 1 BB section view; Figure 4 yes Figure 1 CC section view; Figure 5 yes Figure 2 A magnified view of the I-shaped image; Figure 6 yes Figure 2 II magnified view; Figure 7 This is a perspective view of the tension bar assembly of this utility model; In the diagram: 1. Tension shaft, 11. Bearing, 2. Mounting plate, 21. Horizontal slide, 211. Guide hole, 212. Spring limiting groove, 213. Buffer rubber column, 2131. Annular groove, 214. Snap ring, 215. Mounting through hole, 2151. Annular snap edge, 3. Horizontal slider, 31. Guide shaft, 32. Arc-shaped snap-fit ​​surface, 33. Mounting hole, 34. Blind hole, 4. Top pressure spring, 51. Side cover, 52. Connecting screw A, 6. Socket head cap screw, 71. Synchronous gear, 711. Fastening screw, 72. Synchronous rack, 81. Photoelectric mounting plate, 811. Adjustment elongated hole, 82. Connecting screw B, 83. Photoelectric switch, 91. Connecting side plate, 911. Connecting plate, 9111. Connecting elongated hole, 92. Connecting screw C. Detailed Implementation

[0018] Example 1: See Figure 1-7 A tension bar assembly, installed between the side walls of a printing device, includes a horizontally arranged tension shaft 1 and horizontally sliding components symmetrically installed at both ends of the tension shaft 1. The front side of the tension shaft 1 is in contact with the printing medium to adjust the tension of the printing medium. The horizontally sliding components allow the end of the tension shaft 1 to slide horizontally. The horizontally sliding components include a mounting plate 2 that is in contact with the side wall of the printing device, a horizontal slider 3, and a top pressure spring 4. The middle of the side of the mounting plate 2 is provided with a horizontal groove 21 that slides with the horizontal slider 3. The horizontal slider 3 slides horizontally along the horizontal groove 21. The front side of the horizontal slider 3 is in contact with the rear side of the end of the tension shaft 1. A water-cooled spring slides forward. The smooth block 3 pushes the end of the tension shaft 1 forward; the printing medium acts on the front side of the tension shaft 1, causing the horizontal slider 3 to move backward; a guide shaft 31 is vertically installed at the center of the rear side of the horizontal slider 3; the tail end of the horizontal slide groove 21 is provided with a guide hole 211 that slides with the guide shaft 31; the guide hole 211 cooperates with the guide shaft 31 to provide guidance for the sliding of the horizontal slider 3, and also limits the horizontal slider 3 in the left and right directions, improving the horizontal sliding stability of the tension shaft 1; the top pressure spring 4 is set between the tail end of the horizontal slide groove 21 and the rear side of the horizontal slider 3, and is fitted outside the guide shaft 31; the top pressure spring 4 provides the power for the horizontal slider 3 to move forward.

[0019] Compared with the prior art, this utility model provides a tension rod assembly that can be horizontally ejected, which can save working space; wherein the front side of the tension shaft 1 is connected to the printing medium to adjust the tension of the printing medium; the horizontal sliding component makes the end of the tension shaft 1 slide horizontally; the horizontal slider 3 slides horizontally along the horizontal slide groove 21; the forward sliding horizontal slider 3 pushes the end of the tension shaft 1 forward; the printing medium acts on the front side of the tension shaft 1, causing the horizontal slider 3 to move backward; the guide hole 211 cooperates with the guide shaft 31 to provide guidance for the sliding of the horizontal slider 3, and also limits the horizontal slider 3 in the left and right directions, improving the horizontal sliding stability of the tension shaft 1; the top pressure spring 4 provides the power for the horizontal slider 3 to move forward.

[0020] The horizontal slide 21 has a spring limiting groove 212 at its tail end that corresponds to the guide hole 211; the rear end of the top pressure spring 4 is inserted into the spring limiting groove 212 to achieve a limit position, ensuring that the top pressure spring 4 can function stably.

[0021] The tension bar assembly also includes a side cover 51 and a connecting screw 52; the spring limiting groove 212 passes through the side of the mounting plate 2 where the horizontal slide groove 21 is located; the side cover is fastened to the spring limiting groove 212; the connecting screw 52 passes through the side cover and is threadedly connected to the mounting plate 2; this facilitates the installation of the horizontal slider 3 and the top pressure spring 4 onto the mounting plate 2.

[0022] A buffer rubber column 213 is installed on the inner wall of the front end of the horizontal slide groove 21 to alleviate the impact caused by the forward sliding of the tension shaft 1. The front end of the horizontal slide groove 21 is provided with a mounting through hole 215. An annular retaining edge 2151 extends inward from the inner wall of the mounting through hole 215. The front end of the middle part of the buffer rubber column 213 is provided with an annular retaining groove 2131 that matches the annular retaining edge 2151. The annular retaining edge 2151 and the annular retaining groove 2131 cooperate with each other to realize the installation of the annular rubber column. The rear end of the buffer rubber column 213 is a truncated cone with a smaller outer diameter and a larger inner diameter to better alleviate the impact caused by the end of the tension shaft 1. The front end of the buffer rubber column 213 is a cone to facilitate better insertion into the mounting through hole 215.

[0023] A bearing 11 with a horizontal groove 21 is coaxially mounted at the end of the tension shaft 1, which reduces the sliding resistance of the tension shaft 1 in the horizontal groove 21; the height of the horizontal groove 21 is equal to the height of the horizontal slider 3 and the outer diameter of the bearing 11; the bearing 11 slides more stably; the front side of the horizontal slider 3 is provided with an arc-shaped snap-fit ​​surface 32 that matches and connects with the outer side of the bearing 11, which increases the contact area between the horizontal slider 3 and the bearing 11, and ensures that the horizontal slider 3 stably pushes the bearing 11 to rotate.

[0024] The horizontal slider 3 has a mounting hole 33 on its front side; the horizontal sliding component also includes an internal hexagon screw 6; the internal hexagon screw 6 passes through the mounting hole 33 and is threaded to the front end of the guide shaft 31; the guide shaft 31 and the slider are detachable, which is convenient for on-site assembly.

[0025] The horizontal slider 3 has a blind hole 34 on its rear side that matches the front end of the guide shaft 31; the guide shaft 31 is inserted into the blind hole 34 to ensure the vertical connection between the guide shaft 31 and the rear side of the horizontal slider 3.

[0026] The horizontal slide 21 extends horizontally through the other side of the mounting plate 2; a retaining ring 214 extends inward from the edge of the horizontal slide 21 on the other side of the mounting plate 2; the retaining ring 214 limits the bearing 11 horizontally to ensure the bearing 11 works stably.

[0027] The horizontal sliding component also includes a synchronous gear 71 and a synchronous rack 72; the synchronous gear 71 is coaxially mounted at the end of the tension shaft 1; the synchronous rack 72 is arranged below the synchronous gear 71 along the length of the horizontal slide groove 21 and is connected to the mounting base plate 2; the synchronous gear 71 and the synchronous rack 72 mesh with each other; the synchronous gear 71 and the synchronous rack 72 at both ends of the tension shaft 1 cooperate with each other to ensure that both ends of the tension shaft 1 rotate at the same speed and slide horizontally synchronously.

[0028] The hub side of the synchronizing gear 71 is threaded with a fastener 711; the end of the fastener 711 abuts against the side of the tension shaft 1, so as to realize the coaxial connection between the synchronizing gear 71 and the tension shaft 1.

[0029] The end of the photoelectric mounting plate 81 is provided with an adjustment elongated hole 811 arranged in the front-to-back direction; the connecting screw B 82 passes through the adjustment elongated hole 811 and connects with the top surface of the mounting base plate 2; the adjustment elongated hole 811 enables the photoelectric switch 83 to adjust its installation position, which is convenient for on-site adjustment.

[0030] The working principle of this embodiment is as follows: The front side of the tension shaft 1 is connected to the printing medium, adjusting the tension of the printing medium; the horizontal sliding component allows the end of the tension shaft 1 to slide horizontally; the horizontal slider 3 slides horizontally along the horizontal groove 21; the forward sliding horizontal slider 3 pushes the end of the tension shaft 1 forward; the printing medium acts on the front side of the tension shaft 1, causing the horizontal slider 3 to move backward; the guide hole 211 cooperates with the guide shaft 31 to provide guidance for the sliding of the horizontal slider 3 and also limits the horizontal slider 3 in the left and right directions, improving the horizontal sliding stability of the tension shaft 1; the top pressure spring 4 provides the power for the horizontal slider 3 to move forward. The spring limiting groove 212 ensures that the top pressure spring 4 functions stably; the side baffle is fastened to the spring limiting groove 212; the connecting screw A 52 passes through the side baffle and is threadedly connected to the mounting plate 2; this facilitates the installation of the horizontal slider 3 and the top pressure spring 4 onto the mounting plate 2. The buffer rubber column 213 can alleviate the impact caused by the forward sliding of the end of the tension shaft 1.

[0031] Example 2: Example 2 is basically the same as Example 1, and the similarities will not be repeated. The difference is that the horizontal sliding component also includes a photoelectric mounting plate 81 and a connecting screw B 82. One end of the photoelectric mounting plate 81 is connected to the top surface of the mounting base plate 2 through the connecting screw B 82, and the bottom surface of the other end is equipped with a downward-facing photoelectric switch 83. When the end of the tension shaft 1 passes under the photoelectric switch 83, the photoelectric switch 83 will be triggered and an electrical signal will be emitted, indicating that the tension of the printing medium is less than the set value and the printing medium needs to be tightened quickly.

[0032] The horizontal sliding component also includes a connecting side plate 91 and a connecting screw C 92; the connecting side plate 91 is connected to the outer side of the mounting base plate 2 by the connecting screw C 92; the top of the connecting side plate 91 is provided with an outwardly extending connecting plate 911 for connecting with the side wall of the printing device; the connecting plate 911 is provided with a left-right direction connecting elongated hole 9111 to compensate for manufacturing errors and installation errors.

Claims

1. A tension bar assembly, installed between the side walls of a printing device, characterized in that, The device includes a horizontally arranged tension shaft and horizontally sliding components symmetrically installed at both ends of the tension shaft. The horizontally sliding components include a mounting plate that connects to the side wall of the printing device, a horizontal slider, and a top pressure spring. The middle of the side of the mounting plate is provided with a horizontal groove that slides and engages with the horizontal slider. The front side of the horizontal slider connects to the rear side of the end of the tension shaft, and a guide shaft is vertically installed at the center of the rear side. The tail end of the horizontal groove is provided with a guide hole that slides and engages with the guide shaft. The top pressure spring is located between the tail end of the horizontal groove and the rear side of the horizontal slider and is fitted onto the guide shaft.

2. The tension bar assembly according to claim 1, characterized in that: The horizontal slide has a spring-limiting groove at its tail end that corresponds to the guide hole; the rear end of the top pressure spring is inserted into the spring-limiting groove.

3. The tension bar assembly according to claim 1, characterized in that: A buffer rubber column is installed on the inner wall of the front end of the horizontal chute.

4. The tension bar assembly according to claim 1, characterized in that: The tension shaft end is coaxially mounted with a bearing that slides with a horizontal groove; the height of the horizontal groove = the height of the horizontal slider = the outer diameter of the bearing; the front side of the horizontal slider is provided with an arc-shaped snap-fit ​​surface that matches and connects with the outer side of the bearing.

5. The tension bar assembly according to claim 4, characterized in that: A horizontal groove runs horizontally through the other side of the mounting plate; a retaining ring extends inward from the edge of the horizontal groove on the other side of the mounting plate.

6. The tension bar assembly according to claim 4, characterized in that: The horizontal sliding component also includes a synchronizing gear and a synchronizing rack; the synchronizing gear is coaxially mounted at the end of the tension shaft; the synchronizing rack is positioned below the synchronizing gear along the length of the horizontal sliding groove and is connected to the mounting plate; the synchronizing gear and the synchronizing rack mesh with each other.

7. The tension bar assembly according to claim 6, characterized in that: The hub side of the synchronizing gear is threaded with a fastener; the end of the fastener abuts against the side of the tension shaft.

8. The tension bar assembly according to claim 1, characterized in that: The horizontal sliding component also includes a photoelectric mounting plate and a connecting screw B; one end of the photoelectric mounting plate is connected to the top surface of the mounting base plate by the connecting screw B, and the bottom surface of the other end is equipped with a downward-facing photoelectric switch.

9. The tension bar assembly according to claim 8, characterized in that: The end of the photoelectric mounting plate is provided with an adjustment elongated hole arranged in the front-to-back direction; the connecting screw B passes through the adjustment elongated hole and connects with the top surface of the mounting base plate.

10. The tension bar assembly according to claim 1, characterized in that: The horizontal sliding component also includes a connecting side plate and a connecting screw C; the connecting side plate is connected to the outer side of the mounting plate by the connecting screw C; the top of the connecting side plate is provided with an outwardly extending connecting plate; the connecting plate is provided with a connecting elongated hole in the left and right direction.

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