Tension adjusting device

Abstract

The utility model belongs to the technical field of printing rolling, and particularly relates to a tension adjusting device which comprises a control cabinet, a first guide roller, a second guide roller, a third guide roller and a rolling shaft, the first guide roller is rotatably arranged at one end of the control cabinet, the second guide roller is rotatably arranged below the first guide roller, and the third guide roller is rotatably arranged below the rolling shaft. The third guide roller is located on one side of the second guide roller, the winding shaft is located on one side of the third guide roller, a material receiving box is arranged between the second guide roller and the third guide roller, and a tension adjusting frame is arranged on one side of the material receiving box. A printing coiled material can be adsorbed to the surface of the air suction roller through negative pressure, certain resistance can be generated when the printing coiled material moves, the printing coiled material in front of the tension adjusting frame can be in a tightened state all the time, meanwhile, the suction force can be adjusted through the electromagnetic valve so that the tension can be adjusted in the using process, the structure is simple, adjustment is convenient, and the practicability is high. And the printing coiled material can be better protected under the condition that the tension of the printing coiled material is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of printing and winding, and particularly relates to a tension adjusting device. Background Technique

[0002] A printing press is a machine for printing words and images. Modern printing presses generally consist of mechanisms such as plate loading, inking, impression, and paper feeding. Its working principle is: first, the words and images to be printed are made into printing plates and installed on the printing press. Then, ink is applied to the areas with words and images on the printing plate by manual or the printing press, and then directly or indirectly transferred to paper or other printing substrates (such as textiles, metal plates, plastics, leather, wood boards, glass, and ceramics), thereby replicating the same printed matter as the printing plate. Through patent retrieval, it is found that the publication number: CN110526012A, discloses a winding device for a printing press. Through a winding pretreatment device with the function of drying paper, the surface of the wound paper is blown dry, avoiding the problem that the ink on the surface of the paper is not dry and the contact with the back of the inner paper will affect the printing effect, thus improving the printing effect of the paper. At the same time, through the size adjustment component, it can meet the winding of papers of different sizes, avoiding the easy occurrence of wrinkles at both ends of the paper and affecting the quality of the finished paper.

[0003] During the use of the existing printing and winding device, it is necessary to adjust the tightness of the printing coil through an adjusting device to achieve a better winding effect. However, the structure of the tightness adjusting device for the printing coil is complex, and it is not easy to accurately control the tightness of the printing coil during use, which is likely to cause damage to the printing coil. To solve the above problems, a tension adjusting device is proposed in this application. Content of the Utility Model

[0004] (1) Purpose of the Utility Model

[0005] To solve the technical problems in the background technique, the utility model proposes a tension adjusting device. A negative pressure state is formed on the surface of the suction roller. Through the negative pressure, the printing coil can be adsorbed on the surface of the suction roller. When the printing coil moves, a certain resistance can be generated, so that the printing coil in front of the tension adjusting frame is always in a taut state. At the same time, the magnitude of the suction force can be adjusted through the solenoid valve, so as to adjust the tension during use. The structure is simple and the adjustment is convenient. Under the condition of ensuring the tension of the printing coil, the printing coil can be better protected to solve the problems proposed in the background technique.

[0006] (2) Technical Solution

[0007] To solve the above technical problems, the utility model provides a tension adjusting device, which includes a control cabinet, a first guide roller, a second guide roller, a third guide roller and a winding shaft. The first guide roller is rotatably arranged at one end of the control cabinet. The second guide roller is rotatably arranged below the first guide roller. The third guide roller is located on one side of the second guide roller. The winding shaft is located on one side of the third guide roller. A material receiving box is arranged between the second guide roller and the third guide roller. A tension adjusting frame is arranged on one side of the material receiving box.

[0008] The tension adjusting frame is provided with winding rollers, which are equidistantly distributed. An air suction roller is rotatably arranged between two groups of the winding rollers. Through holes are formed on the surface of the air suction roller, and the through holes are equidistantly arranged in a ring shape on the surface of the air suction roller. One end of the air suction roller is conductively connected to an air suction pipe, and a vacuum pump is arranged at the end of the air suction pipe.

[0009] Preferably, bearing seats are rotatably arranged on the surfaces of both ends of the air suction roller, and both ends of the air suction roller are connected to the inner wall of the tension adjusting frame through the bearing seats.

[0010] Preferably, the air suction pipe penetrates through the bearing seat, and an electromagnetic valve is installed on the air suction pipe.

[0011] Preferably, a rotary shaft seal is installed at one end of the air suction pipe, and the rotary shaft seal is connected to the air suction end of the vacuum pump.

[0012] Preferably, the material receiving box is located below the second guide roller, and a baffle is movably arranged in the inner cavity of the material receiving box, and the baffle is symmetrically arranged.

[0013] Preferably, guide rods are arranged at the bottom of the inner cavity of the material receiving box, the guide rods are symmetrically arranged, and the guide rods are inserted into the baffle.

[0014] Preferably, limiting frames are movably arranged at both ends of the winding roller, and locking screw rods are threadedly connected to the surfaces of the limiting frames.

[0015] The above technical solution of the utility model has the following beneficial technical effects:

[0016] 1. In the utility model, the air suction end of the vacuum pump is connected to the air suction pipe through a rotary shaft seal. The rotary shaft seal can keep the connection between the air suction pipe and the vacuum pump in a sealed state when the air suction roller rotates, and a negative pressure state is formed on the surface of the air suction roller. The printing coil can be adsorbed on the surface of the air suction roller through the negative pressure. A certain resistance can be generated when the printing coil moves, so that the printing coil in front of the tension adjusting frame can always be in a taut state. At the same time, the magnitude of the suction force can be adjusted through the electromagnetic valve, so as to adjust the tension during use, and the use is more convenient.

[0017] 2. In the present utility model, the baffle is guided by a guide rod to move. At the same time, the limit frame can move on the winding roller and is locked by a locking screw rod, which can play a role in limiting during the guiding process of the printing coil, avoiding the deviation of the printing coil, and improving the winding accuracy of the printing coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a tension adjusting device of the present utility model;

[0019] Figure 2 FIG. 2 is a schematic diagram of the internal structure of the cabinet of a tension adjusting device of the present utility model;

[0020] Figure 3 FIG. 3 is a schematic sectional structure diagram of a tension adjusting device of the present utility model;

[0021] Figure 4 FIG. 4 is a schematic diagram of the driving structure of the placing rack of a tension adjusting device of the present utility model.

[0022] Reference numerals:

[0023] 1. Control cabinet; 2. First guiding roller; 3. Second guiding roller; 4. Material receiving box; 5. Tension adjusting frame; 6. Third guiding roller; 7. Winding shaft; 8. Winding roller; 9. Suction roller; 10. Bearing seat; 11. Suction pipe; 12. Solenoid valve; 13. Rotary shaft seal; 14. Vacuum pump; 15. Limit frame; 16. Baffle; 17. Guide rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0025] As Figures 1-4 shown, a tension adjusting device proposed by the present utility model includes a control cabinet 1, a first guiding roller 2, a second guiding roller 3, a third guiding roller 6 and a winding shaft 7. The first guiding roller 2 is rotatably arranged at one end of the control cabinet 1, the second guiding roller 3 is rotatably arranged below the first guiding roller 2, the third guiding roller 6 is located on one side of the second guiding roller 3, the winding shaft 7 is located on one side of the third guiding roller 6, a material receiving box 4 is arranged between the second guiding roller 3 and the third guiding roller 6, and a tension adjusting frame 5 is arranged on one side of the material receiving box 4;

[0026] The tension adjusting frame 5 is provided with winding rollers 8, and the winding rollers 8 are equidistantly distributed. A suction roller 9 is rotatably arranged between two groups of the winding rollers 8. Through holes are formed on the surface of the suction roller 9, and the through holes are equidistantly arranged in a ring on the surface of the suction roller 9. One end of the suction roller 9 is conductively connected to a suction pipe 11, and a vacuum pump 14 is arranged at the end of the suction pipe 11.

[0027] It should be noted that the printing coil passes through the first guiding roller 2 and the second guiding roller 3, then passes through the suction roller 9 and the winding rollers 8 on the tension adjusting frame 5 in an S-shaped route, and then passes through the third guiding roller 6 and is wound by the winding shaft 7. The first guiding roller 2, the second guiding roller 3 and the third guiding roller 6 all play a guiding role for the printing coil. After the printing coil is discharged from the second guiding roller 3, it drops into the material receiving box 4. The suction end of the vacuum pump 14 is connected to the suction pipe 11 through a rotary shaft seal 13. When the suction roller 9 rotates, the connection between the suction pipe 11 and the vacuum pump 14 is in a sealed state, and a negative pressure state is formed on the surface of the suction roller 9. The printing coil can be adsorbed on the surface of the suction roller 9 through the negative pressure. When the printing coil moves, a certain resistance can be generated, so that the printing coil in front of the tension adjusting frame 5 is always in a taut state. At the same time, the suction force can be adjusted through the solenoid valve 12, so as to adjust the tension during use, making it more convenient to use.

[0028] In this embodiment, as Figure 4 shown, bearing seats 10 are rotatably arranged on both ends of the suction roller 9, and both ends of the suction roller 9 are connected to the inner wall of the tension adjusting frame 5 through the bearing seats 10.

[0029] It should be noted that the suction roller 9 can rotate flexibly in the tension adjusting frame 5 through the bearing seats 10.

[0030] In this embodiment, as Figure 4 shown, the suction pipe 11 penetrates through the bearing seat 10, and a solenoid valve 12 is installed on the suction pipe 11. A rotary shaft seal 13 is installed at one end of the suction pipe 11, and the rotary shaft seal 13 is connected to the suction end of the vacuum pump 14.

[0031] It should be noted that during the rotation of the suction roller 9, the suction pipe 11 and the vacuum pump 14 can be hermetically connected through the rotary shaft seal 13.

[0032] In this embodiment, as Figure 3As shown in the figure, the material receiving box 4 is located below the second guiding roller 3. A baffle 16 is movably arranged in the inner cavity of the material receiving box 4. The baffle 16 is symmetrically arranged. A guiding rod 17 is arranged at the bottom of the inner cavity of the material receiving box 4. The guiding rod 17 is symmetrically arranged, and the guiding rod 17 is inserted into the baffle 16. Both ends of the winding roller 8 are movably provided with limiting frames 15, and locking screw rods are threadedly connected to the surfaces of the limiting frames 15.

[0033] It should be noted that the baffle 16 is guided by the guiding rod 17 to move. At the same time, the limiting frame 15 can move on the winding roller 8 and is locked by the locking screw rod, which can play a limiting role in the process of guiding the printing coil, avoid the printing coil from shifting, and improve the winding accuracy of the printing coil.

[0034] The working principle and usage process of the present utility model are as follows: The printing coil passes through the first guiding roller 2 and the second guiding roller 3, and then passes through the suction roller 9 on the tension adjusting frame 5 and the winding roller 8 in an S-shaped route, and then passes through the third guiding roller 6 and is wound by the winding shaft 7. The first guiding roller 2, the second guiding roller 3 and the third guiding roller 6 all play a guiding role for the printing coil. The printing coil falls into the material receiving box 4 after being discharged from the second guiding roller 3. The suction end of the vacuum pump 14 is connected to the suction pipe 11 through the rotary shaft seal 13. When the suction roller 9 rotates, the rotary shaft seal 13 can keep the connection between the suction pipe 11 and the vacuum pump 14 in a sealed state, and a negative pressure state is formed on the surface of the suction roller 9. The printing coil can be adsorbed on the surface of the suction roller 9 through the negative pressure. When the printing coil moves, a certain resistance can be generated, so that the printing coil in front of the tension adjusting frame 5 is always in a taut state. At the same time, the suction force can be adjusted through the solenoid valve 12 to adjust the tension during use, making it more convenient to use. The baffle 16 is guided by the guiding rod 17 to move. At the same time, the limiting frame 15 can move on the winding roller 8 and is locked by the locking screw rod, which can play a limiting role in the process of guiding the printing coil, avoid the printing coil from shifting, and improve the winding accuracy of the printing coil.

[0035] It should be understood that the above specific embodiments of the present utility model are only used for exemplary illustration or explanation of the principle of the present utility model, and do not constitute a limitation to the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present utility model shall be included within the protection scope of the present utility model. In addition, the appended claims of the present utility model are intended to cover all changes and modification examples falling within the scope and boundary of the appended claims or equivalent forms of such scope and boundary.

Claims

1. A tension adjusting device, comprising a control cabinet (1), a first guide roller (2), a second guide roller (3), a third guide roller (6) and a winding shaft (7). The first guide roller (2) is rotatably arranged at one end of the control cabinet (1), the second guide roller (3) is rotatably arranged below the first guide roller (2), the third guide roller (6) is located on one side of the second guide roller (3), and the winding shaft (7) is located on one side of the third guide roller (6), characterized in that, A material receiving box (4) is provided between the second guide roller (3) and the third guide roller (6), and a tension adjusting frame (5) is provided on one side of the material receiving box (4); The tension adjusting frame (5) is provided with winding rollers (8), and the winding rollers (8) are arranged at equal intervals. An air suction roller (9) is rotatably arranged between two groups of the winding rollers (8). Through holes are formed on the surface of the air suction roller (9), and the through holes are arranged in an equidistant ring on the surface of the air suction roller (9). One end of the air suction roller (9) is conductively connected to an air suction pipe (11), and a vacuum pump (14) is provided at the end of the air suction pipe (11).

2. The tension adjusting device according to claim 1, characterized in that, Bearing seats (10) are rotatably arranged on both end surfaces of the air suction roller (9), and both ends of the air suction roller (9) are connected to the inner wall of the tension adjusting frame (5) through the bearing seats (10).

3. The tension adjusting device according to claim 2, characterized in that, The air suction pipe (11) penetrates through the bearing seat (10), and an electromagnetic valve (12) is installed on the air suction pipe (11).

4. A tension adjusting device according to claim 3, wherein A rotary shaft seal (13) is installed at one end of the air suction pipe (11), and the rotary shaft seal (13) is connected to the suction end of the vacuum pump (14).

5. A tension adjusting device according to claim 1, characterized in that, The material receiving box (4) is located below the second guide roller (3), and a baffle (16) is movably arranged in the inner cavity of the material receiving box (4), and the baffle (16) is symmetrically arranged.

6. The tension adjusting device according to claim 5, characterized in that, Guide rods (17) are arranged at the bottom of the inner cavity of the material receiving box (4), the guide rods (17) are symmetrically arranged, and the guide rods (17) are inserted into the baffle (16).

7. A tension adjusting device according to claim 6, characterized in that, Limit frames (15) are movably arranged at both ends of the winding roller (8), and locking screw rods are threadedly connected to the surfaces of the limit frames (15).

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