Paper tension control device

Abstract

The utility model provides a paper tension control device, including frame main part, first tension adjusting structure, second tension adjusting structure, guide component and winding assembly. First tension adjusting structure is located in the paper feed side, adopts cylinder drive double swing arm to drive tension adjusting roller swing, realizes the preliminary fast tension adjustment to paper, second tension adjusting structure is located in the paper outlet side, passes through the position of the symmetrical adjusting arm and bottom tensioning roller of the fine adjustment screw bolt, completes fine tension control. Guide component is by the first guide roller, second guide roller of high and low arrangement constitutes, guides paper steady convey to winding assembly, winding assembly is by winding motor direct drive winding roller, ensures that winding is neat and stable. The device structure is compact, adjusts accurate, responds fast, effectively solves paper conveying in tension uneven, deviation, wrinkle or paper breakage etc.

Description

Technical Field

[0001] This utility model relates to the field of tension control devices, and in particular to paper tension control devices. Background Technology

[0002] In industrial production processes such as papermaking, printing, slitting, and packaging, paper undergoes multiple continuous conveying processes, and its tension stability directly affects the quality of the finished product. Traditional tension control devices often use a single adjustment mechanism or rely on manual experience for adjustment, making it difficult to simultaneously meet the coarse adjustment requirements of the paper feeding section and the fine adjustment requirements of the paper output section. Some structures also suffer from problems such as response lag, low adjustment accuracy, and susceptibility to speed changes, leading to paper loosening, shaking, deviation, wrinkling, and even breakage during operation, especially under high-speed or wide-width conditions. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a paper tension control device to solve the problems of low tension adjustment accuracy and slow response in the paper conveying process in the prior art.

[0004] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0005] A paper tension control device includes: a frame body for mounting various components and maintaining overall rigidity; a first tension adjustment structure disposed on the paper feed side of the frame body for preliminary tension adjustment of the paper entering the device; a second tension adjustment structure disposed on the paper output side of the frame body for fine tension adjustment of the output paper; a winding assembly for stably winding the tension-adjusted paper; and a guide assembly disposed between the second tension adjustment structure and the winding assembly for guiding the paper along a preset path to the winding assembly.

[0006] To achieve the above technical solution, during operation, the paper first passes through the first tension adjustment structure located on the paper feed side of the frame body. Here, the paper undergoes initial tension adjustment to eliminate irregular tension variations caused by the characteristics of the roll material itself or previous processes. Subsequently, the paper continues to the second tension adjustment structure on the paper output side, where it receives more precise tension control, ensuring uniform and stable tension throughout the entire conveying process. After precise adjustment, the paper is guided by the guide assembly along a preset path and smoothly conveyed to the winding assembly, ultimately achieving stable and neat winding. This device effectively solves the problem of uneven tension that may occur during paper conveying in traditional equipment, improves paper processing quality, and reduces paper breakage and wrinkling caused by uncontrolled tension.

[0007] In one embodiment of the present invention, the first tension adjustment structure includes two symmetrically arranged swing arms; a tension adjustment roller connected to the upper ends of the two swing arms for contacting and applying force to the paper; a connecting shaft rotatably disposed on the frame body and connected to the lower ends of the two swing arms; and an adjustment cylinder, the cylinder body of which is hinged to the frame body and the piston rod of which is hinged to the swing arms, the extension and retraction of which can drive the swing arms and the tension adjustment roller to rotate around the connecting shaft.

[0008] To achieve the above technical solution, the first tension adjustment structure comprises a swingable floating roller assembly consisting of two symmetrically arranged swing arms and a tension adjustment roller. The lower end of the swing arm is hinged to the frame body via a connecting shaft, while the upper end supports the tension adjustment roller and contacts the paper. The cylinder body and piston rod of the adjusting cylinder are respectively hinged to the frame body and the swing arms. When the cylinder extends or retracts, it drives the swing arms, along with the tension adjustment roller, to rotate around the connecting shaft, thereby changing the position of the roller relative to the paper path and dynamically adjusting the tension on the paper. This structure offers rapid response and high adjustment precision, enabling real-time adjustment of the contact pressure according to the paper's running state, effectively preventing slippage, slack, or overstretching. Simultaneously, the symmetrical double swing arm design ensures smooth movement and balanced force distribution of the tension adjustment roller, significantly improving the stability of paper conveying and the adaptability of the equipment, making it particularly suitable for high-speed, wide-width paper processing scenarios.

[0009] In one embodiment of the present invention, the second tension adjustment structure includes two symmetrically arranged adjustment arms; a support column connected to the middle of the two adjustment arms; a tension roller connected to the bottom of the two adjustment arms; and an adjustment assembly connected between the frame body and the adjustment arms.

[0010] To achieve the above technical solution, the second tension adjustment structure consists of two symmetrically arranged adjustment arms and a tension roller forming a linkage tension adjustment unit. The tension roller is connected to the bottom of the adjustment arm and contacts the paper. The support column is located in the middle of the adjustment arm to enhance the overall rigidity and maintain the synchronous movement of the two arms. The adjustment component is connected between the frame body and the adjustment arm, and can apply controllable tension or thrust to drive the adjustment arm to swing around its fulcrum, thereby driving the tension roller to move up and down, dynamically changing the paper wrap angle or path length, and realizing precise control of the tension of the paper output section.

[0011] In one embodiment of the present invention, the adjustment assembly includes a mounting bracket installed on the frame body and an adjustment bolt passing through the mounting bracket and connected to the lower end of the adjustment arm.

[0012] To achieve the above technical solution, the adjustment component is equipped with an adjustment bolt inserted through a mounting bracket fixed to the frame body. The end of the adjustment bolt is connected to the lower end of the adjustment arm. By rotating the adjustment bolt, its extension length can be precisely changed, thereby pushing or pulling the adjustment arm to rotate around the fulcrum, driving the tension roller to move up and down, and realizing manual and stepless fine adjustment of the paper tension.

[0013] In one embodiment of the present invention, the guiding assembly includes a first guide roller and a second guide roller disposed between the first guide roller and the winding assembly and lower than the first guide roller.

[0014] To achieve the above technical solution, the guiding component is equipped with a two-stage guide roller structure with one high and one low. The first guide roller is located upstream, and the second guide roller is located between it and the winding component and at a lower position, so that the paper forms a downward arc path during the conveying process. This structure not only effectively guides the paper to smoothly transition to the winding component, but also uses gravity to assist in tensioning the paper web, reducing floating or shaking, and avoiding paper offset or wrinkling caused by sudden changes in winding tension.

[0015] In one embodiment of the present invention, the winding assembly includes a winding roller and a winding motor disposed at the end of the winding roller and driving the winding roller to rotate.

[0016] To achieve the above technical solution, the winding assembly directly drives the winding roller to rotate via the winding motor, thereby enabling stable and continuous winding of the tension-controlled paper. The winding motor is installed at the end of the winding roller, has a compact structure and high transmission efficiency, and can precisely control the winding speed and torque, thus working in conjunction with the upstream tension adjustment system to maintain the dynamic balance of tension throughout the paper path.

[0017] As described above, the paper tension control device of this invention has the following beneficial effects: This invention forms a two-stage tension control system by setting a first tension adjustment structure on the paper infeed side and a second tension adjustment structure on the paper output side, effectively eliminating initial tension fluctuations and achieving high-precision dynamic compensation; combined with the high-low arrangement of dual guide rollers to assist in paper stabilization, and the winding assembly to achieve speed-tension coordinated control, the overall structure is highly rigid, has a fast response, and precise adjustment. It meets the needs of various paper processing techniques, significantly improves conveying stability and winding quality, and reduces paper breaks and scrap rates. Attached Figure Description

[0018] Figure 1 The diagram shown is a schematic representation of the structure of this utility model.

[0019] Figure 2 This is another structural schematic diagram of the present invention.

[0020] Figure 3 This is shown as the first tension adjustment structure.

[0021] Figure 4 This is shown as the second tension adjustment structure.

[0022] Component designation explanation

[0023] 1. Frame body; 2. Swing arm frame; 3. Tension adjusting roller; 4. Connecting shaft; 5. Adjusting cylinder; 6. Adjusting arm; 7. Support column; 8. Tensioning roller; 9. Mounting frame; 10. Adjusting nut; 11. First guide roller; 12. Second guide roller; 13. Rewinding roller; 14. Rewinding motor. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] Please see Figures 1 to 4 This utility model provides a paper tension control device, comprising: a frame body 1 for mounting various components and maintaining overall rigidity; a first tension adjustment structure disposed on the paper feed side of the frame body 1 for preliminary tension adjustment of the paper entering the device; a second tension adjustment structure disposed on the paper output side of the frame body 1 for fine tension adjustment of the output paper; a winding assembly for stably winding the tension-adjusted paper; and a guide assembly disposed between the second tension adjustment structure and the winding assembly for guiding the paper along a preset path to the winding assembly.

[0026] During operation, the paper first passes through the first tension adjustment structure located on the paper inlet side of the frame body 1. Here, the paper undergoes initial tension adjustment to eliminate irregular tension variations caused by the characteristics of the roll material itself or previous processes. Subsequently, the paper continues to the second tension adjustment structure on the paper outlet side, where it receives more precise tension control, ensuring uniform and stable tension throughout the entire conveying process. After precise adjustment, the paper is guided by the guide assembly along a preset path and smoothly conveyed to the winding assembly, ultimately achieving stable and neat winding. This device effectively solves the problem of uneven tension that may occur during paper conveying in traditional equipment, improves paper processing quality, and reduces paper breakage and wrinkling caused by uncontrolled tension.

[0027] The first tension adjustment structure includes two symmetrically arranged swing arms 2; a tension adjustment roller 3 connected to the upper ends of the two swing arms 2 for contacting the paper and applying force; a connecting shaft 4 rotatably mounted on the frame body 1 and connected to the lower ends of the two swing arms 2; and an adjustment cylinder 5, the cylinder body of which is hinged to the frame body 1 and the piston rod of which is hinged to the swing arms 2. The extension and retraction of the adjustment cylinder 5 can drive the swing arms 2 and the tension adjustment roller 3 to rotate around the connecting shaft 4.

[0028] The first tension adjustment structure consists of two symmetrically arranged swing arms 2 and a tension adjustment roller 3, forming a swingable floating roller assembly. Its lower end is hinged to the frame body 1 via a connecting shaft 4, while its upper end supports the tension adjustment roller 3 and contacts the paper. The cylinder body and piston rod of the adjusting cylinder 5 are respectively hinged to the frame body 1 and the swing arms 2. When the cylinder extends or retracts, it drives the swing arms 2, along with the tension adjustment roller 3, to rotate around the connecting shaft 4, thereby changing the position of the roller relative to the paper path and dynamically adjusting the tension on the paper. This structure offers rapid response and high adjustment precision, enabling real-time adjustment of the contact pressure according to the paper's running state, effectively preventing slippage, slack, or overstretching. Simultaneously, the symmetrical double swing arm design ensures smooth movement and balanced force distribution of the tension adjustment roller 3, significantly improving the stability of paper conveying and equipment adaptability, making it particularly suitable for high-speed, wide-width paper handling scenarios.

[0029] The second tension adjustment structure includes two symmetrically arranged adjustment arms 6; a support column 7 connected to the middle of the two adjustment arms 6; a tension roller 8 connected to the bottom of the two adjustment arms 6; and an adjustment assembly connected between the frame body 1 and the adjustment arms 6.

[0030] The second tension adjustment structure consists of two symmetrically arranged adjustment arms 6 and a tension roller 8 forming a linkage tension adjustment unit. The tension roller 8 is connected to the bottom of the adjustment arm 6 and contacts the paper. The support column 7 is located in the middle of the adjustment arm 6 to enhance the overall rigidity and maintain the synchronous movement of the two arms. The adjustment component is connected between the frame body 1 and the adjustment arm 6, and can apply controllable tension or thrust to drive the adjustment arm 6 to swing around its fulcrum, thereby driving the tension roller 8 to move up and down, dynamically changing the paper wrap angle or path length, and realizing fine control of the tension of the paper output section.

[0031] The adjustment assembly includes a mounting bracket 9 installed on the frame body 1 and an adjustment bolt passing through the mounting bracket 9 and connected to the lower end of the adjustment arm 6.

[0032] The adjustment component is connected to the mounting bracket 9 fixed on the frame body 1 and the adjustment bolt passing through it. The end of the adjustment bolt is connected to the lower end of the adjustment arm 6. By rotating the adjustment bolt, its extension length can be precisely changed, thereby pushing or pulling the adjustment arm 6 to rotate around the fulcrum, driving the tension roller 8 to move up and down, so as to realize manual and stepless fine adjustment of the paper tension.

[0033] The guiding assembly includes a first guide roller 11 and a second guide roller 12 disposed between the first guide roller 11 and the winding assembly and lower than the first guide roller 11.

[0034] The guiding assembly uses a two-stage guide roller structure with one high and one low. The first guide roller 11 is located upstream, and the second guide roller 12 is located between it and the winding assembly and is at a lower position, so that the paper forms a downward arc path during the conveying process. This structure not only effectively guides the paper to smoothly transition to the winding assembly, but also uses gravity to assist in tensioning the paper web, reducing floating or shaking, and avoiding paper offset or wrinkling caused by sudden changes in winding tension.

[0035] The winding assembly includes a winding roller 13 and a winding motor 14 disposed at the end of the winding roller 13 and driving the winding roller 13 to rotate. This winding assembly directly drives the winding roller 13 to rotate via the winding motor 14, achieving stable and continuous winding of the tension-controlled paper. The winding motor 14, mounted at the end of the winding roller 13, has a compact structure, high transmission efficiency, and can precisely control the winding speed and torque, thus working in conjunction with the upstream tension adjustment system to maintain the dynamic balance of tension throughout the paper path.

[0036] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A paper tension control device, characterized in that, include, The main frame is used to install various components and maintain overall rigidity. The first tension adjustment structure is located on the paper feeding side of the frame body and is used to perform preliminary tension adjustment on the paper entering the device. The second tension adjustment structure is located on the paper output side of the frame body and is used to finely adjust the tension of the output paper. The winding assembly is used to stably wind up the tension-controlled paper. A guide component, disposed between the second tension adjustment structure and the winding component, is used to guide the paper along a preset path to the winding component.

2. The paper tension control device according to claim 1, characterized in that, The first tension adjustment structure includes, Two symmetrically arranged swing arms; Tension adjusting rollers, connected to the upper ends of the two swing arms, are used to contact the paper and apply force; A connecting shaft is rotatably mounted on the main frame body and connected to the lower ends of the two swing arms; An adjusting cylinder has its cylinder body hinged to the frame body and its piston rod hinged to the swing arm frame. The extension and retraction of the adjusting cylinder can drive the swing arm frame and the tension adjusting roller to rotate around the connecting shaft.

3. The paper tension control device according to claim 1, characterized in that, The second tension adjustment structure includes, Two symmetrically arranged adjusting arms; A support column connecting the middle of the two adjusting arms; Tensioning rollers connected to the bottom of the two adjusting arms; An adjustment assembly is connected between the frame body and the adjustment arm.

4. The paper tension control device according to claim 3, characterized in that, The adjustment assembly includes a mounting bracket installed on the frame body and an adjustment bolt passing through the mounting bracket and connected to the lower end of the adjustment arm.

5. The paper tension control device according to claim 1, characterized in that, The guiding assembly includes a first guide roller and a second guide roller disposed between the first guide roller and the winding assembly and lower than the first guide roller.

6. The paper tension control device according to claim 1, characterized in that, The winding assembly includes a winding roller and a winding motor disposed at the end of the winding roller and driving the winding roller to rotate.

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