Guide mechanism for printing machine

Abstract

The utility model relates to the technical field of printing machines, and provides a guide mechanism for a printing machine, which comprises a base, first support columns, a guide component, third support columns and an upper limit block, the first support columns are fixedly connected to two sides of the base, and bearing blocks are slidably connected to the interiors of the first support columns. Two conveying rollers are rotationally connected into the bearing block; the guiding assemblies are fixedly connected to the two sides of the base. The third supporting columns are fixedly connected to the two sides of the base, and sliding blocks are slidably connected to the inner walls of the third supporting columns. Through the arrangement of the upper limiting block and the lower limiting block, when the device limits paper, the limiting effect on the paper is better, vertical displacement of the paper can be limited, balls are arranged in the limiting blocks, friction force of the limiting blocks on the paper is reduced, and damage to the paper is avoided; and the lower limiting block on the lower side can continuously apply certain pressure upwards, and the paper guiding effect is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of printing press technology, and specifically relates to a guiding mechanism for printing presses. Background Technology

[0002] The guiding mechanism of a printing press is a key component that ensures the smooth movement of printing material along the correct path during the printing process. Its main functions include guiding the material, adjusting tension, and preventing deviation. This mechanism typically consists of guide rollers, adjusting devices, support structures, and a drive system. Depending on the application requirements, there are various types, including manual adjustment, automatic adjustment, pneumatic or hydraulic, and shaftless drive types. To ensure the stable operation of the guiding mechanism, regular inspection, cleaning, tightening, and lubrication are necessary.

[0003] A known authorized patent with application number 202321436959.0 discloses a printing paper guiding mechanism for a printing press: It includes a base plate, a support frame on the base plate, a first guide roller rotatably mounted on the support frame, the first guide roller being rotatably connected to the support frame, a bracket at the upper end of the support frame, a rotating column rotatably mounted on the bracket, a toothed belt on the outer side of the rotating column, a gear meshing with the toothed belt, a first motor connected to the gear, the first motor being mounted on the bracket, a square column inserted into the rotating column, a lead screw passing through the lower end of the square column, a square hole on the rotating column that mates with the square column, a lifting plate rotatably connected through a bearing at the lower end of the lead screw passing through the support frame, the lead screw being threadedly connected to the support frame, and the lifting plate being slidably connected to the support frame on both sides via a track structure. This mechanism can guide printing paper of different thicknesses and can limit and correct its position, improving the versatility of the entire mechanism. The second guide roller always maintains contact with the printing paper, ensuring proper guidance of the printing paper.

[0004] However, in implementing the relevant technology, the following problems were found in the above technical solution: when in use, only two vertical limiting plates are used, which makes it difficult to effectively limit the paper. When the paper deviates, it is easy to cause creases in the paper. Furthermore, it cannot limit the vertical displacement of the paper. Therefore, a guiding mechanism for printing presses is proposed to solve the above problems. Utility Model Content

[0005] This utility model proposes a guiding mechanism for printing presses, which solves the problem in related technologies that when using only two vertical limiting plates, it is difficult to effectively limit the paper, and when the paper deviates, it is easy to cause paper creases, and it cannot limit the vertical displacement of the paper.

[0006] The technical solution of this utility model is as follows: A guiding mechanism for a printing machine includes: a base, a first support column, a guiding component, a third support column and an upper limit block. The first support column is fixedly connected to both sides of the base. A load-bearing block is slidably connected inside the first support column. Two conveying rollers are rotatably connected inside the load-bearing block.

[0007] The guide components are fixedly connected to both sides of the base;

[0008] The third support column is fixedly connected to both sides of the base. A slider is slidably connected to the inner wall of the third support column. A support frame is fixedly connected to the outer wall of the slider. A movable frame is slidably connected to the outer wall of the support frame.

[0009] The inner wall of the movable frame is threaded with a bidirectional screw, and the upper wall of the movable frame is fixedly connected with a hinge block. The other end of the hinge block is fixedly connected with an upper limit block.

[0010] Preferably, a lower limit block is slidably connected to the inner wall of the upper limit block, a connecting piece is fixedly connected to the lower wall of the upper limit block, a spring is fixedly connected to the upper surface of the connecting piece, the end of the spring is fixedly connected to the lower wall of the lower limit block, a guide rod is fixedly connected to the lower wall of the lower limit block, the guide rod passes through the connecting piece, and ball bearings are slidably connected inside the upper limit block and the lower limit block.

[0011] Preferably, two second motors are fixedly connected to the outer surface of the support frame, and the output ends of the second motors are fixedly connected to both ends of the bidirectional screw.

[0012] Preferably, the inner wall of the load-bearing block is slidably connected to two side sliders, the inner wall of the load-bearing block is threadedly connected to a fixing bolt, the inner wall of the load-bearing block is slidably connected to a top block, the end of the fixing bolt contacts the top block, and the inner wall of the base is inserted with a fixing pin, which penetrates the load-bearing block.

[0013] The outer wall of the load-bearing block is fixedly connected to a first motor, which is fixedly connected to one end of the conveying roller.

[0014] Preferably, the guiding component includes a second support column, a fixing block is slidably connected to the inner wall of the second support column, a guide roller is rotatably connected to the inner wall of the fixing block, a plurality of clamping bolts are rotatably connected to the inner wall of the fixing block, and a fixing plate is threadedly connected to the outer wall of the clamping bolts. The fixing block and the fixing plate together clamp the second support column.

[0015] Preferably, the inner wall of the slider is threaded with a washer screw, and the washer screw and the slider together clamp the third support column.

[0016] The working principle and beneficial effects of this utility model are as follows:

[0017] By setting two limit blocks, the device can better limit the paper when it is in use, and can restrict the vertical displacement of the paper. The limit blocks are equipped with ball bearings to reduce the friction between the limit blocks and the paper and avoid damage to the paper. In addition, the lower limit block can continuously apply a certain pressure upward through the spring setting, which further enhances the guiding effect on the paper. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a side view of the three-dimensional structure of the present invention;

[0021] Figure 3 This is a cross-sectional three-dimensional structural diagram of the first support column in this utility model;

[0022] Figure 4 In this utility model Figure 3 Enlarged view of the structure at point A.

[0023] In the diagram: 1. Base; 2. First support column; 3. Load-bearing block; 4. First motor; 5. Conveyor roller; 6. Moving frame; 7. Fixing pin; 8. Second support column; 9. Fixing block; 10. Clamping bolt; 11. Side slider; 12. Top block; 13. Fixing bolt; 14. Third support column; 15. Slider; 16. Second motor; 17. Bidirectional screw; 18. Support frame; 19. Hinge block; 20. Washer screw; 21. Upper limit block; 22. Lower limit block; 23. Connecting piece; 24. Spring; 25. Guide rod; 26. Ball bearing; 27. Fixing piece; 28. Guide roller. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0025] Implementation

[0026] Please see Figure 1-4. A guiding mechanism for a printing press, comprising: a base 1, a first support column 2, a guiding component 8, a third support column 12 and an upper limit block 19. The first support column 2 is fixedly connected to both sides of the base 1. A load-bearing block 3 is slidably connected inside the first support column 2. Two conveying rollers 5 are rotatably connected inside the load-bearing block 3.

[0027] The guide component 8 is fixedly connected to both sides of the base 1;

[0028] The third support column 12 is fixedly connected to both sides of the base 1. The inner wall of the third support column 12 is slidably connected to the slider 13. The outer wall of the slider 13 is fixedly connected to the support frame 16. The outer wall of the support frame 16 is slidably connected to the movable frame 6.

[0029] The inner wall of the movable frame 6 is threaded with a bidirectional screw 15, and the upper wall of the movable frame 6 is fixedly connected with a hinge block 17. The other end of the hinge block 17 is fixedly connected with an upper limit block 19.

[0030] The technical solution provided in this embodiment is as follows: First, the paper is passed through the conveyor roller 5, and then the paper is wrapped around the lower side of the guide roller 803. Next, the load-bearing block 3 is adjusted to fix the height of the conveyor roller 5. Then, the fixing bolt 11 is rotated to move the top block 10 forward, causing the side slider 9 to move to both sides, thus fixing the height of the load-bearing block 3. Then, the pin 7 is inserted to further strengthen the fixing strength of the load-bearing block 3. Next, the height of the fixing block 802 is adjusted. After adjusting to the predetermined height, the fixing plate 805 and the fixing block 802 are clamped together by rotating the clamping bolt 804 to clamp the second support column 801, thereby fixing the height of the guide roller 803. Next, the height of the slider 13 is adjusted. After adjusting the slider 13 to a certain height, it is rotated... The washer screw 18 fixes the position of the slider 13. Then, the paper passes through the upper limit block 19 and the lower limit block 20. The position of the limit blocks is then adjusted by the hinge block 17. The distance between the two sets of limit blocks can be adjusted according to the width of the paper. The second motor 14 drives the bidirectional screw 15 to rotate, which in turn drives the moving frame 6 to move. Then, the first motor 4 is started. The start of the first motor 4 drives the conveyor roller 5 to convey the printing paper. The paper passes through the guide roller 805, which adjusts the vertical position of the paper. After passing through the limit blocks, the lower limit block 20 applies a certain force upward under the action of the spring, and the ball bearing 24 reduces the friction on the paper and limits the paper, so that the paper is in the correct position.

[0031] Furthermore, a lower limit block 20 is slidably connected to the inner wall of the upper limit block 19, a connecting piece 21 is fixedly connected to the lower wall of the upper limit block 19, a spring 22 is fixedly connected to the upper surface of the connecting piece 21, the end of the spring 22 is fixedly connected to the lower wall of the lower limit block 20, a guide rod 23 is fixedly connected to the lower wall of the lower limit block 20, the guide rod 23 passes through the connecting piece 21, and ball bearings 24 are rolledly connected inside the upper limit block 19 and the lower limit block 20.

[0032] Specifically, the setting of two sets of limiting blocks further enhances the ability to limit the paper, and the setting of ball bearing 24 avoids the paper from tearing due to excessive friction when the paper moves between the two limiting blocks.

[0033] Furthermore, two second motors 14 are fixedly connected to the outer surface of the support frame 16, and the output ends of the second motors 14 are fixedly connected to both ends of the bidirectional screw 15.

[0034] Specifically, the bidirectional screw 15 enables the two movable frames 6 to move towards the center simultaneously, making the device more effective at guiding the paper and adaptable to paper of different widths.

[0035] Furthermore, the inner wall of the load-bearing block 3 is slidably connected with two side sliders 9, the inner wall of the load-bearing block 3 is threadedly connected with a fixing bolt 11, the inner wall of the load-bearing block 3 is slidably connected with a top block 10, the end of the fixing bolt 11 is in contact with the top block 10, and the inner wall of the base 1 is inserted with a fixing pin 7, which penetrates the load-bearing block 3.

[0036] The outer wall of the load-bearing block 3 is fixedly connected to the first motor 4, which is fixedly connected to one end of the conveying roller 5.

[0037] Specifically, the simultaneous design of the fixing pin 7 and the side slider 9 improves the fixing effect of the load-bearing block 3 and prevents displacement during operation.

[0038] Furthermore, the guide assembly 8 includes a second support column 801, a fixing block 802 is slidably connected to the inner wall of the second support column 801, a guide roller 803 is rotatably connected to the inner wall of the fixing block 802, a plurality of clamping bolts 804 are rotatably connected to the inner wall of the fixing block 802, and a fixing plate 805 is threadedly connected to the outer wall of the clamping bolts 804. The fixing block 802 and the fixing plate 805 together clamp the second support column 801.

[0039] Specifically, the setting of the fixing plate 805 makes the height of the guide roller 803 adjustable, and the operation of the clamping bolt 804 is more convenient and the fixing speed is faster.

[0040] Furthermore, the inner wall of the slider 13 is threaded with a washer screw 18, which together with the slider 13 clamps the third support column 12.

[0041] Specifically, fixing the slider 13 allows for adjustment of the height and position of the limiting block. In conjunction with the hinge block 17, both the height and angle of the limiting block can be adjusted, giving the device high versatility.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A guiding mechanism for a printing press, comprising: The base (1), the first support column (2), the guide assembly (8), the third support column (12) and the upper limit block (19) are characterized in that the first support column (2) is fixedly connected to both sides of the base (1), and a load-bearing block (3) is slidably connected inside the first support column (2), and two conveying rollers (5) are rotatably connected inside the load-bearing block (3). The guide assembly (8) is fixedly connected to both sides of the base (1); The third support column (12) is fixedly connected to both sides of the base (1). The inner wall of the third support column (12) is slidably connected to a slider (13). The outer wall of the slider (13) is fixedly connected to a support frame (16). The outer wall of the support frame (16) is slidably connected to a movable frame (6). The inner wall of the movable frame (6) is threaded with a bidirectional screw (15), and the upper wall of the movable frame (6) is fixedly connected with a hinge block (17), and the other end of the hinge block (17) is fixedly connected with an upper limit block (19).

2. The guiding mechanism for a printing press according to claim 1, characterized in that: The upper limit block (19) is slidably connected to the inner wall of the lower limit block (20). The lower wall of the upper limit block (19) is fixedly connected to the connecting piece (21). The upper surface of the connecting piece (21) is fixedly connected to the spring (22). The end of the spring (22) is fixedly connected to the lower wall of the lower limit block (20). The lower wall of the lower limit block (20) is fixedly connected to the guide rod (23). The guide rod (23) passes through the connecting piece (21). The upper limit block (19) and the lower limit block (20) are internally connected to the ball bearing (24).

3. The guiding mechanism for a printing press according to claim 1, characterized in that: Two second motors (14) are fixedly connected to the outer surface of the support frame (16), and the output ends of the second motors (14) are fixedly connected to both ends of the bidirectional screw (15).

4. A guiding mechanism for a printing press according to claim 1, characterized in that: The inner wall of the load-bearing block (3) is slidably connected to two side sliders (9), the inner wall of the load-bearing block (3) is threadedly connected to a fixing bolt (11), the inner wall of the load-bearing block (3) is slidably connected to a top block (10), the end of the fixing bolt (11) is in contact with the top block (10), and the inner wall of the base (1) is inserted with a fixing pin (7), which penetrates the load-bearing block (3). The outer wall of the load-bearing block (3) is fixedly connected to a first motor (4), which is fixedly connected to one end of the conveying roller (5).

5. A guiding mechanism for a printing press according to claim 1, characterized in that: The guiding component (8) includes a second support column (801), a fixing block (802) is slidably connected to the inner wall of the second support column (801), a guide roller (803) is rotatably connected to the inner wall of the fixing block (802), a plurality of clamping bolts (804) are rotatably connected to the inner wall of the fixing block (802), and a fixing plate (805) is threadedly connected to the outer wall of the clamping bolts (804). The fixing block (802) and the fixing plate (805) together clamp the second support column (801).

6. A guiding mechanism for a printing press according to claim 1, characterized in that: The inner wall of the slider (13) is threaded with a washer screw (18), and the washer screw (18) and the slider (13) together clamp the third support column (12).

Images