Automatic tape tensioning device for a bookbinding machine

Abstract

The utility model discloses a kind of automatic tensioning devices of adhesive tape of dividing machine, it is mainly related to double-sided adhesive tape dividing field. Including the bracket being set on machine body, the tensioning roller is rotatably connected on the bracket, the slide is vertically slidably connected on the bracket, the tensioning roller is rotatably connected on slide, the top of the bracket is equipped with steering box, the inside of steering box is equipped with steering wheel, the lower of steering box is equipped with cylinder, the inside of cylinder is vertically slidably connected with counterweight, the traction belt is equipped on slide, the traction belt is connected with counterweight after passing steering wheel, locking assembly is equipped between slide and bracket. The utility model has the beneficial effect that it can solve the technical problem that manual adjustment tensioning roller is needed during dividing process and affects dividing efficiency, realize the automatic adjustment of tensioning roller position, do not need manual adjustment, ensure the tensioning state of adhesive tape after dividing, improve the smoothness and efficiency of dividing operation.

Description

Technical Field

[0001] This utility model relates to the field of tape slitting machines, specifically an automatic tensioning device for tape in a slitting machine. Background Technology

[0002] Double-sided tape is typically produced in rolls with both large length and width. Before leaving the factory, it needs to be divided into smaller lengths according to customer requirements and rewound onto paper tubes. This process usually requires a slitting machine. Specifically, the slitting operation involves separating the tape base layer and the release layer, using tension rollers to tighten both layers, and then combining them and rewinding them onto the paper tube. During slitting, the release layer usually needs to have a certain amount of slack relative to the tape, and it is also prone to damage during the slitting process. As a result, the length of the tape base layer after slitting is usually longer than the length of the release layer. To ensure the tape is tightened, the tension rollers usually need to be manually adjusted upwards, resulting in a large workload and discontinuous slitting process, which affects the efficiency of the slitting operation. Utility Model Content

[0003] The purpose of this utility model is to provide an automatic tensioning device for tape in a slitting machine. It can solve the technical problem that the slitting efficiency is affected by the need for manual adjustment of the tensioning roller during the slitting process. It realizes the automatic adjustment of the position of the tensioning roller without manual adjustment, ensuring the tension of the tape after slitting and improving the smoothness and efficiency of the slitting operation.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] An automatic tensioning device for tape in a slitting machine includes a bracket mounted on the machine body, a tensioning roller rotatably connected to the bracket, a slide block slidably connected to the bracket along a vertical direction, the tensioning roller rotatably connected to the slide block, a steering box at the top of the bracket, a steering wheel inside the steering box, a cylinder below the steering box, a counterweight slidably connected to the cylinder along a vertical direction, a traction belt on the slide block, the traction belt passing around the steering wheel and connecting to the counterweight block, and a locking assembly between the slide block and the bracket.

[0006] Furthermore, the locking assembly includes a locking rod that passes through the slide and is threadedly connected to it, and the bracket has multiple locking holes arranged in a vertical array to cooperate with the locking rod.

[0007] Furthermore, the bracket is provided with a sliding groove, the slide block is slidably connected in the sliding groove, and the lock holes are distributed in a vertical array in the sliding groove.

[0008] Furthermore, the cross-section of the groove is T-shaped, and the cross-section of the slide block is H-shaped, with one side of the H-shaped slide block slidably connected within the groove.

[0009] Furthermore, the slide block is symmetrically provided with fixing blocks, and one end of the tensioning roller passes through one of the fixing blocks and is rotatably connected to the other fixing block.

[0010] Furthermore, the traction belt is a chain, and the steering wheel is engaged with the chain.

[0011] Furthermore, the side wall of the cylinder is provided with a through sliding hole, and the counterweight is provided with a handle, which passes through the sliding hole and is slidably connected to it.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The structure of this utility model features a support frame on the machine body, a slide block slidably connected to the support frame along the vertical direction, a tensioning roller rotatably connected to the slide block, a steering box at the top of the support frame, a steering wheel inside the steering box, a cylinder below the steering box, a counterweight block slidably connected to the cylinder along the vertical direction, a traction belt on the slide block, and the traction belt connecting to the counterweight block after passing around the steering wheel. This structure allows the traction belt to connect the counterweight block and the slide block, ensuring that the slide block and tensioning roller are always in an upward tensioning state on the base layer of the slid tape under the gravity of the counterweight block. When the base layer of the tape loosens due to the excess of the separator layer, the slide block and tensioning roller automatically slide upward to tighten the base layer of the tape under the action of the counterweight block, eliminating the need for manual adjustment, ensuring the smoothness of the slitting operation, and improving the efficiency of the slitting operation.

[0014] 2. A locking component is provided between the slide and the bracket. With this structure, when the next double-sided tape needs to be rewound after the previous rewound is completed, the traction belt is pulled down to lower the slide to the lowest position. Then, the locking component is used to fix the slide, so that the slide will not move upward automatically. At this time, the new tape base layer that needs to be rewound can be easily wound around the lowered tension roller, which is ready for the subsequent automatic upward sliding tension of the tension roller, ensuring the convenience of subsequent use. Attached Figure Description

[0015] Appendix Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Appendix Figure 2 This is the right view of this utility model.

[0017] Appendix Figure 3 This is an appendix to this utility model. Figure 2 A cross-sectional view along the AA direction.

[0018] Appendix Figure 4This is an appendix to this utility model. Figure 3 A cross-sectional view along the BB direction.

[0019] Appendix Figure 5 This is an appendix to this utility model. Figure 3 A cross-sectional view along the CC direction.

[0020] The labels shown in the attached diagram:

[0021] 1. Machine body; 2. Support frame; 3. Tensioning roller; 4. Slide seat; 5. Steering box; 6. Steering wheel; 7. Cylinder; 8. Counterweight; 9. Traction belt; 10. Locking rod; 11. Locking hole; 12. Slide groove; 13. Fixing block; 14. Slide hole; 15. Handle. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0023] Reference Figure 1 and Figure 2 This utility model describes an automatic tensioning device for tape in a slitting machine. The main structure includes a bracket 2 mounted on a machine body 1. The machine body 1 is the main part of the slitting machine, and it is equipped with slitting rollers, take-up rollers, intermediate rollers, etc., so that a long double-sided tape, after being slitted, passes through multiple intermediate rollers for support before being wound onto the take-up roller to form a double-sided tape of a specified length. The bracket 2 is fixed to the machine body 1 of the slitting machine by welding or bolts to provide support. A tensioning roller 3 is rotatably connected to the bracket 2 via bearings. The base layer of the slitted tape passes over the tensioning roller 3 and is wound onto the take-up roller. A slide block 4 is slidably connected vertically to the bracket 2, and the slide block 4 can slide up and down along the bracket 2. One end of the tensioning roller 3... The bracket 2 is rotatably connected to the slide block 4 via bearings. A steering box 5 is fixed to the top of the bracket 2 by welding or bolts. The bottom of the steering box 5 has an inlet and an outlet on both sides. A steering wheel 6 is rotatably connected to the inside of the steering box 5 via bearings. A cylindrical body 7 is located below the steering box 5. The cylindrical body 7 has an open top. A counterweight 8 is vertically slidably connected inside the cylindrical body 7. A traction belt 9 is bolted to the slide block 4. The traction belt 9 enters from the inlet, passes around the steering wheel 6, and extends out from the outlet to be bolted to the counterweight 8. This structure allows the slide block 4 to be connected to the counterweight 8 via the traction belt 9. Under the weight of the counterweight 8, the slide block 4 maintains an upward sliding tendency. (Refer to...) Figure 5When the base layer of the double-sided tape wraps around the tension roller 3 on the slide block 4 and onto the take-up roller, the slide block 4, maintaining an upward sliding trend, keeps the double-sided tape taut, making the wrapping of the double-sided tape on the take-up roller smoother. When the release layer becomes shorter due to excess or wear, after the base layer and release layer of the double-sided tape are simultaneously rolled on the slitting roller, the length of the upper base layer will become relatively longer according to the winding speed of the release layer, causing the base layer to loosen and fail to maintain a taut state. At this time, under the gravity of the counterweight 8, the slide block 4 automatically slides upward, thereby automatically driving the tension roller 3 to move upward and tighten the base layer of the double-sided tape. There is no need to manually adjust the position of the tension roller 3, ensuring the taut state of the base layer during the slitting process. The flatness of the double-sided tape as it is wound on the take-up roller makes the entire slitting process smoother and ensures slitting efficiency. A locking component is provided between the slide 4 and the bracket 2. With this structure, when the next double-sided tape needs to be slitted after the previous one is completed, the tension roller 3 is at a high position. Pulling the traction belt 9 downwards causes the slide 4 and tension roller 3 to descend. At this time, the locking component fixes the position of the slide 4 relative to the bracket 2, so that the slide 4 no longer slides upward relative to the bracket 2. Then, the base layer of the double-sided tape can be wrapped around the tension roller 3 and wound onto the take-up roller. Then, the locking component is released from fixing the position of the slide 4, and the subsequent slitting operation can be carried out smoothly, making the operation of changing double-sided tape more convenient and smooth.

[0024] Furthermore, the locking assembly includes a locking rod 10, which passes through the slide 4 and is threadedly connected to it. The bracket 2 has multiple locking holes 11 arranged vertically to cooperate with the locking rod 10. With this structure, simply rotating the locking rod 10 will cause the front end of the locking rod 10 to rotate and advance under the action of the threaded connection until it enters the corresponding locking hole 11, thereby fixing the position of the slide 4 relative to the bracket 2. The structure is simple, the operation is convenient, and the locking and fixing of the slide 4 is more convenient and secure.

[0025] Furthermore, refer to Figure 3 The bracket 2 is provided with a sliding groove 12, which is arranged vertically. The slide block 4 is slidably connected in the sliding groove 12. The sliding groove 12 is configured to guide the vertical sliding of the slide block 4 and ensure the stability of the vertical sliding structure of the slide block 4. The locking holes 11 are arranged in a vertical array in the sliding groove 12, so that after the slide block 4 slides vertically along the sliding groove 12 to the corresponding position, the locking rod 10 can smoothly pass through the slide block 4 and extend into the corresponding locking hole 11, making the sliding and locking of the slide block 4 more secure.

[0026] Furthermore, the cross-section of the slide groove 12 is T-shaped, and the cross-section of the slide block 4 is H-shaped. One side of the H-shaped slide block is slidably connected to the slide groove 12. This structure makes it difficult for the contact position between the slide block 4 and the slide groove 12 to be relatively misaligned or shaken in the lateral direction, and prevents the slide block 4 from getting stuck. This avoids the slide block 4 from separating from the slide groove 12 and further improves the stability of the sliding structure of the slide block 4 relative to the support 2.

[0027] Furthermore, the slide block 4 is symmetrically fixed with fixing blocks 13 by welding or bolts. One end of the tensioning roller 3 passes through one of the fixing blocks 13 and is rotatably connected to the other fixing block 13 through a bearing. This structure allows the fixed block 13 to support the tensioning roller 3, making it less likely for the tensioning roller 3, which is suspended at one end, to tilt or sway. This makes the rotation structure of the tensioning roller 3 more stable and ensures the tensioning effect on the double-sided tape.

[0028] Furthermore, the traction belt 9 is a chain, and the steering wheel 6 is meshed with the chain. Specifically, the steering wheel 6 has a gear structure, which makes it less likely for the traction belt 9 to slip relative to the steering wheel 6 through meshing with the chain, making the vertical traction of the slide block 4 smoother and more stable.

[0029] Furthermore, refer to Figure 4 The side wall of the cylinder 7 is provided with a through sliding hole 14. The counterweight 8 is fixed with a handle 15 by welding or bolts. The handle 15 passes through the sliding hole 14 and is slidably connected to it. The handle 15 is located outside the cylinder 7. With this structure, when changing double-sided tape, the counterweight 8 is pulled upward from the outside using the handle 15, so that the slide 4 automatically descends to the lowest position under the action of gravity, making the reset operation of the tensioning roller 3 more labor-saving and convenient.

[0030] Working Principle: This invention features a support frame 2 mounted on the machine body 1. A slide block 4 is vertically slidably connected to the support frame 2, and a tensioning roller 3 is rotatably connected to the slide block 4. A steering box 5 is located at the top of the support frame 2, and a steering wheel 6 is located inside the steering box 5. A cylinder 7 is located below the steering box 5, and a counterweight 8 is vertically slidably connected inside the cylinder 7. A traction belt 9 is mounted on the slide block 4, and after passing around the steering wheel 6, it connects to the counterweight 8. This structure allows the traction belt 9 to connect the counterweight 8 and the slide block 4, ensuring that under the weight of the counterweight 8, the slide block 4 and the tensioning roller 3 are always in an upward tensioning state on the slit tape base layer. When the tape base layer loosens due to excess material in the release layer, The counterweight 8 automatically slides the slide block 4 and the tensioning roller 3 upwards to tighten the tape base layer without manual adjustment, ensuring smooth slitting operation and improving efficiency. A locking component is provided between the slide block 4 and the bracket 2. With this structure, when slitting is complete and the next double-sided tape needs to be slitted, the traction belt 9 is pulled downwards, causing the slide block 4 to descend to its lowest position. The locking component then secures the slide block 4, preventing it from moving upwards automatically. At this point, the new tape base layer to be slitted can be easily wound onto the descended tensioning roller 3, preparing it for the subsequent automatic upward sliding and tightening of the tensioning roller 3, ensuring convenience in subsequent use.

Claims

1. An automatic tensioning device for tape in a slitting machine, comprising a bracket (2) mounted on a machine body (1), wherein a tensioning roller (3) is rotatably connected to the bracket (2), characterized in that: The bracket (2) is vertically slidably connected to a slide block (4), the tensioning roller (3) is rotatably connected to the slide block (4), the top of the bracket (2) is provided with a steering box (5), the inside of the steering box (5) is provided with a steering wheel (6), the bottom of the steering box (5) is provided with a cylinder (7), the inside of the cylinder (7) is vertically slidably connected with a counterweight (8), the slide block (4) is provided with a traction belt (9), the traction belt (9) passes around the steering wheel (6) and is connected to the counterweight (8), and a locking assembly is provided between the slide block (4) and the bracket (2).

2. The automatic tensioning device for tape in a slitting machine according to claim 1, characterized in that: The locking assembly includes a locking rod (10), which passes through the slide (4) and is threadedly connected to it. The bracket (2) has multiple locking holes (11) arranged vertically along the upper edge to cooperate with the locking rod (10).

3. The automatic tensioning device for slitting machine tape according to claim 2, characterized in that: The bracket (2) is provided with a sliding groove (12), the slide block (4) is slidably connected in the sliding groove (12), and the lock holes (11) are distributed in a vertical array in the sliding groove (12).

4. The automatic tensioning device for slitting machine tape according to claim 3, characterized in that: The cross-section of the groove (12) is T-shaped, and the cross-section of the slide block (4) is H-shaped. One side of the H-shaped slide block is slidably connected in the groove (12).

5. The automatic tensioning device for slitting machine tape according to claim 1, characterized in that: The slide block (4) is symmetrically provided with fixed blocks (13), and one end of the tensioning roller (3) passes through one of the fixed blocks (13) and is rotatably connected to the other fixed block (13).

6. The automatic tensioning device for slitting machine tape according to claim 1, characterized in that: The traction belt (9) is a chain, and the steering wheel (6) is engaged with the chain.

7. The automatic tensioning device for tape in a slitting machine according to claim 1, characterized in that: The side wall of the cylinder (7) is provided with a through sliding hole (14), and the counterweight (8) is provided with a handle (15). The handle (15) passes through the sliding hole (14) and is slidably connected to it.

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