A novel tension control device for high-speed automatic paper splicing machine

Abstract

This utility model relates to the field of papermaking equipment technology and discloses a novel tension control device for a high-speed automatic paper splicer. It includes several shaft frames, one of which is fixedly connected to a main control box on one side, and another has several tilting hydraulic rods rotatably connected to one side of a tilting hydraulic rod. Several connecting shafts are rotatably connected between adjacent shaft frames, and several horizontally pushing hydraulic cylinders are rotatably connected to the outside of the connecting shafts. Several guide rails are also symmetrically fixedly connected to the outside of the connecting shafts. A cantilever is movably connected to the connecting shafts via the guide rails. A coupler is fixedly connected to one side of the cantilever, and a servo motor is fixedly connected to one side of the coupler. Without the need to disassemble or replace the adapter, after the chuck is inserted into the central shaft of the paper roll, the horizontally pushing hydraulic cylinders cause the paper roll core to move in conjunction with the top ring, push plate, and clamping block, automatically fixing shafts of different diameters. This reduces downtime and eliminates the need for an independent power mechanism for each chuck, lowering equipment cost and operating expenses.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, and in particular to a novel tension control device for a high-speed automatic paper splicer. Background Technology

[0002] Automatic paper splicing machines are automated equipment used in industries such as printing and packaging to achieve continuous feeding of paper rolls. Their core function is to seamlessly connect a new roll when a roll of paper is about to be used up, thus avoiding production line downtime. Automatic paper splicing machines mainly consist of an unwinding mechanism, a paper splicing mechanism, a tension control system, and a cutting mechanism. The unwinding paper roll holder is a pre-feeding device in roll paper processing equipment. During operation, the roll paper roll is placed on the clamp. The equipment controls the unwinding speed through a tension adjustment component according to the requirements of subsequent processes. The braking device prevents the paper roll from loosening or tearing due to excessive rotation caused by inertia. For example, the existing Chinese utility model patent with publication number CN202805750U: a combined clamp for a paper roll holder, which provides a detachable adapter on the paper roll holder clamp. The adapter has a different outer diameter than the paper roll holder clamp, which can adapt to various... The paper roll cores of the specified size can be quickly installed onto the paper roll holder clamps using bolts. However, when adapting to paper roll cores of different diameters, the adapters still need to be disassembled and replaced, increasing downtime. Secondly, some clamps with expansion structures use internal push blocks controlled by pneumatic or motor to fix the clamps inside paper roll cores of different diameters. However, this structure requires external power input equipment, which increases the installation structure and difficulty when installed on the existing paper unwinding rack cantilever. At the same time, each clamp requires a separate power mechanism, increasing the overall cost and operating cost of the equipment. Utility Model Content

[0003] The purpose of this invention is to provide a novel tension control device for a high-speed automatic paper splicer, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A novel tension control device for a high-speed automatic paper splicer includes several shaft frames. One shaft frame has a main control box fixedly connected to one side, while another shaft frame has several tilting hydraulic rods rotatably connected to one side. Several connecting shafts rotatably connect adjacent shaft frames. Several horizontally pushing hydraulic cylinders are rotatably connected to the outer side of each connecting shaft. Several guide rails are symmetrically fixedly connected to the outer side of each connecting shaft. A cantilever is movably connected to the connecting shaft via the guide rails. A coupler is fixedly connected to one side of the cantilever, and a servo motor is fixedly connected to one side of the coupler. A coupling is fixedly connected to the side of the cantilever opposite to the coupler, and a connecting flange is fixedly connected to one side of the coupling. A clamp is fixedly connected to one side of the connecting flange. Several mounting slots are provided on the outer side of the clamp, and push plates and clamping blocks are movably connected within each mounting slot.

[0005] As a further preferred embodiment of this utility model, a crank is fixedly connected to one side of the bottom of the connecting shaft, and one end of the piston rod of the flipping hydraulic rod is rotatably connected to the crank, so that the connecting shaft can be rotated by pushing the crank through the flipping hydraulic rod, thereby driving the corresponding cantilever to rotate through the connecting shaft, thereby adjusting the paper conveying tension.

[0006] As a further preferred embodiment of this utility model, a slide is fixedly connected to the bottom of the cantilever, and a shaft seat is fixedly connected to one side of the bottom of the slide. The slide is slidably connected to two corresponding guide rails, and the shaft seat is rotatably connected to one end of the piston rod of the corresponding flat-push hydraulic cylinder. Thus, the two cantilevers can be moved synchronously by the two flat-push hydraulic cylinders outside the single connecting shaft, thereby cooperating with the chuck to clamp the original paper roll.

[0007] As a further preferred embodiment of this utility model, a fixed shaft is fixedly connected to one side of the connecting flange, and the fixed shaft is inserted into and fixed within the coupling.

[0008] As a further preferred embodiment of this utility model, the clamp located between the two mounting slots has several oblique countersunk holes. After inserting bolts into the countersunk holes, the bolts can be obliquely threaded into the connecting flange, thus completing the connection between the connecting flange and the clamp. At the same time, after the connecting flange and the clamp are separated, the top ring can be pulled out from the outside of the clamp.

[0009] As a further preferred embodiment of this utility model, a first slope block is fixedly connected to the push plate. A sliding groove is provided in the first slope block. One side of several push plates is fixedly connected by a top ring, and the top ring is inserted into the outside of the clamp. When the clamp is inserted into the central shaft of the original paper roll, the top ring and one side of the central shaft of the original paper roll are pressed against each other when the horizontal hydraulic cylinder pulls the cantilever to move. This causes the top ring to synchronously drive several push plates to move horizontally in the corresponding mounting groove.

[0010] As a further preferred embodiment of this utility model, a plurality of second slope blocks are fixedly connected to the bottom of the clamping block, and a slider is fixedly connected to the bottom of the second slope block. The longitudinal section of the slider is T-shaped, and the slider and the corresponding slide groove are slidably connected to each other. When the push plate drives the two first slope blocks to move horizontally, the structural characteristics of the first slope blocks and the second slope blocks can be used to realize the synchronous movement of a plurality of clamping blocks. In this way, after the clamp is inserted into the central shaft of the original paper roll, the clamping block is automatically pushed out to fix the central shaft of the original paper roll, thus ensuring the stability of unwinding.

[0011] Compared with the prior art, the present invention has the following beneficial effects: In this invention, there is no need to disassemble or replace the adapter. After the chuck is inserted into the central shaft of the paper roll, the paper roll core is linked with the top ring, push plate and clamping block by the flat hydraulic cylinder. This can automatically fix shafts of different diameters, reduce downtime, and eliminate the need for an independent power mechanism for each chuck, thus reducing equipment cost and operating costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the cantilever and the servo motor of this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a cross-sectional view of the clamp of this utility model; Figure 5 This is a schematic diagram of the connection structure between the push plate and the top ring of this utility model; Figure 6 This is a schematic diagram of the connection structure between the clamping block and the second slope block of this utility model.

[0013] In the diagram: 1. Shaft bracket; 2. Main control box; 3. Tilting hydraulic rod; 4. Connecting shaft; 5. Guide rail; 6. Cantilever; 7. Coupler; 8. Servo motor; 9. Coupling; 10. Connecting flange; 11. Chuck; 12. Mounting slot; 13. Push plate; 14. Clamping block; 15. Crank; 16. Slide block; 17. Shaft seat; 18. Fixed shaft; 19. Countersunk hole; 20. First slope block; 21. Slide groove; 22. Top ring; 23. Second slope block; 24. Slider; 25. Horizontal push hydraulic cylinder. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] like Figures 1-6As shown, the present invention provides a novel high-speed automatic paper splicer tension control device, comprising several shaft frames 1. One shaft frame 1 is fixedly connected to a main control box 2 on one side, and several tilting hydraulic rods 3 are rotatably connected to one side of another tilting hydraulic rod 3. Several connecting shafts 4 are rotatably connected between two adjacent shaft frames 1. Several flat-push hydraulic cylinders 25 are rotatably connected to the outside of the connecting shafts 4. Several guide rails 5 are also symmetrically fixedly connected to the outside of the connecting shafts 4. The connecting shafts 4 are also movably connected to a cantilever 6 through the several guide rails 5. A coupler 7 is fixedly connected to one side of the cantilever 6. A servo motor 8 is fixedly connected to one side of the coupler 7. A coupling 9 is fixedly connected to the side of the cantilever 6 opposite to the coupler 7. A connecting flange 10 is fixedly connected to one side of the coupling 9. A clamp 11 is fixedly connected to one side of the connecting flange 10. Several mounting grooves 12 are opened on the outside of the clamp 11. Push plates 13 and clamping blocks 14 are movably connected in the mounting grooves 12 respectively.

[0016] like Figures 1-3 As shown, a crank 15 is fixedly connected to one side of the bottom of the connecting shaft 4. One end of the piston rod of the flipping hydraulic rod 3 is rotatably connected to the crank 15, so that the connecting shaft 4 can be rotated by pushing the crank 15 through the flipping hydraulic rod 3. In turn, the connecting shaft 4 drives the corresponding cantilever 6 to rotate, thereby adjusting the paper conveying tension. A slide 16 is fixedly connected to the bottom of the cantilever 6, and a bearing seat 17 is fixedly connected to one side of the bottom of the slide 16. The slide 16 is slidably connected to the two corresponding guide rails 5, and the bearing seat 17 is rotatably connected to one end of the piston rod of the corresponding flat-push hydraulic cylinder 25. The two cantilever 6 can be pushed synchronously by the two flat-push hydraulic cylinders 25 outside the single connecting shaft 4, thereby cooperating with the chuck 11 to clamp the original paper roll.

[0017] like Figures 3-6As shown, a fixed shaft 18 is fixedly connected to one side of the connecting flange 10. The fixed shaft 18 is inserted into and fixed in the coupling 9. The chuck 11 located between the two mounting slots 12 has several oblique countersunk holes 19. After inserting bolts into the countersunk holes 19, the bolts can be obliquely threaded into the connecting flange 10, completing the connection between the connecting flange 10 and the chuck 11. At the same time, after the connecting flange 10 is separated from the chuck 11, the top ring 22 can be pulled out from the outside of the chuck 11. A first slope block 20 is fixedly connected to the push plate 13. The first slope block 20 has a sliding groove 21. One side of several push plates 13 is fixedly connected by the top ring 22, and the top ring 22 is inserted into the outside of the chuck 11. When the chuck 11 is inserted into the central shaft cylinder of the original paper roll, it can be pushed out of the horizontal liquid. When the pressure cylinder 25 pulls the cantilever 6 to move, the top ring 22 and the central shaft of the original paper roll are pressed against each other, so that the top ring 22 synchronously drives several push plates 13 to move horizontally in the corresponding mounting grooves 12. Several second slope blocks 23 are fixedly connected to the bottom of the clamping block 14. A slider 24 is fixedly connected to the bottom of the second slope block 23. The longitudinal section of the slider 24 is T-shaped. The slider 24 and the corresponding sliding groove 21 are slidably connected to each other. When the push plate 13 drives the two first slope blocks 20 to move horizontally, the structural characteristics of the first slope block 20 and the second slope block 23 can be used to realize the synchronous movement of several clamping blocks 14. In this way, after the clamp 11 is inserted into the central shaft of the original paper roll, the clamping block 14 is automatically pushed out to fix the central shaft of the original paper roll, ensuring the stability of unwinding.

[0018] It should be noted that this utility model is a new type of high-speed automatic paper splicer tension control device. During operation, the tension parameters and the original paper roll matching specifications are first set through the main control box 2 to provide control basis for the overall operation. After the parameters are set, the connecting shaft 4 can be flipped by the flipping hydraulic rod 3 in conjunction with the crank 15, so that the two cantilever 6 follow the axial movement of the connecting shaft 4, and the clamps 11 on the opposite side of the two cantilever 6 are respectively placed on the side of the original paper roll. Then, the flat push hydraulic cylinder 25 is started. The flat push hydraulic cylinder 25 will push the shaft seat 17 to move. The shaft seat 17 drives the slide 16 to slide on the guide rail 5. The slide 16 then drives the cantilever 6 to move along the direction of the connecting shaft 4, so that the clamps 11 are gradually inserted into the central shaft cylinder of the original paper roll. After the clamp 11 is fully inserted, the hydraulic cylinder 25 continues to apply force, causing the central shaft of the original paper roll to press against the top ring 22. Under this force, the top ring 22 synchronously moves multiple push plates 13 fixedly connected to it within the mounting groove 12. As the push plates 13 move, the first slope block 20 fixed to their surface moves accordingly. Because the first slope block 20 contacts the second slope block 23 at the bottom of the clamping block 14, and the slider 24 at the bottom of the second slope block 23 is fitted into the groove 21 of the first slope block 20, the first… The movement of the slope block 20 will push the second slope block 23 through the slope action, so that the second slope block 23 will drive the clamping block 14 to move outward of the clamp 11 until the clamping block 14 is tightly attached to the inner wall of the central shaft cylinder of the original paper roll, thus completing the fixation of the original paper roll and ensuring that the paper roll will not loosen or shift during the subsequent unwinding process. Then, similarly, the flipping hydraulic rod 3 is activated, which will cause the flipping hydraulic rod 3 to cooperate with the crank 15 to rotate the connecting shaft 4, thereby driving the two cantilever 6 to rotate through the connecting shaft 4. When the two cantilever 6 rotate, they will drive the original paper roll to rise. During the unwinding operation, the servo motor 8 starts and transmits power to the coupling 9 through the coupler 7, thereby connecting the flange 10 to drive the chuck 11 to rotate. The chuck 11 then drives the paper roll to rotate to achieve unwinding. During the unwinding process, if it is necessary to adjust the paper tension, the main control box 2 will send a command to the tilting hydraulic rod 3. The piston rod of the tilting hydraulic rod 3 pushes the crank 15 to rotate. The crank 15 drives the connecting shaft 4 to rotate around the shaft frame 1. The rotation of the connecting shaft 4 will change the angle of the cantilever 6, thereby adjusting the unwinding position and angle of the paper roll, indirectly changing the paper conveying tension, so that the tension is always kept within the set range, avoiding the paper from tearing due to excessive tension or loosening due to insufficient tension. When removing the central shaft of the paper roll, simply push the two horizontal hydraulic cylinders 25 toward the two cantilever 6 respectively, so that one side of the central shaft of the paper roll is slightly disengaged from the corresponding top ring 22, thereby releasing the pressure between the several clamping blocks 14 and the inner wall of the central shaft of the paper roll, making it easier for the clamp 11 to be pulled out from the central shaft of the paper roll.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel high speed automatic paper reel tension control device, characterized by: It includes several shaft brackets (1), one of which is fixedly connected to a main control box (2) on one side, and another is rotatably connected to several tilting hydraulic rods (3) on one side. Several connecting shafts (4) are rotatably connected between two adjacent shaft brackets (1). Several flat-push hydraulic cylinders (25) are rotatably connected to the outside of the connecting shafts (4). Several guide rails (5) are also symmetrically fixedly connected to the outside of the connecting shafts (4). A cantilever (6) is also movably connected to the connecting shafts (4) through the several guide rails (5). A coupler (7) is fixedly connected to one side of the cantilever (6), a servo motor (8) is fixedly connected to one side of the coupler (7), a coupling (9) is fixedly connected to the side of the cantilever (6) opposite to the coupler (7), a connecting flange (10) is fixedly connected to one side of the coupling (9), a chuck (11) is fixedly connected to one side of the connecting flange (10), and several mounting slots (12) are provided on the outer side of the chuck (11). A push plate (13) and a clamping block (14) are movably connected in the mounting slots (12).

2. A novel high-speed automatic reel tension control device according to claim 1, characterized in that: A crank (15) is fixedly connected to one side of the bottom of the connecting shaft (4), and one end of the piston rod of the flipping hydraulic rod (3) is rotatably connected to the crank (15).

3. A novel high-speed automatic paper receiving machine tension control device according to claim 1, characterized in that: The bottom of the cantilever (6) is fixedly connected to a slide (16), and a bearing (17) is fixedly connected to one side of the bottom of the slide (16). The slide (16) is slidably connected to two corresponding guide rails (5), and the bearing (17) is rotatably connected to one end of the piston rod of the corresponding flat hydraulic cylinder (25).

4. The novel high-speed automatic paper receiving machine tension control device according to claim 1, characterized in that: A fixed shaft (18) is fixedly connected to one side of the connecting flange (10), and the fixed shaft (18) is inserted into and fixed in the coupling (9).

5. A novel high-speed automatic reel tension control device according to claim 1, characterized in that: The clamp (11) located between the two mounting slots (12) has several oblique countersunk holes (19).

6. A novel high-speed automatic reel tension control device according to claim 1, characterized in that: A first slope block (20) is fixedly connected to the push plate (13). A sliding groove (21) is provided in the first slope block (20). One side of several push plates (13) is fixedly connected by a top ring (22), and the top ring (22) is inserted and connected to the outside of the clamp (11).

7. A novel high-speed automatic reel tension control device according to claim 6, characterized in that: The bottom of the clamping block (14) is fixedly connected to several second slope blocks (23), and the bottom of the second slope blocks (23) is fixedly connected to sliders (24). The longitudinal section of the sliders (24) is T-shaped, and the sliders (24) and the corresponding sliding grooves (21) are slidably connected to each other.

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