Tension adjusting system of adhesive tape splitting machine for vehicle

By designing a tension adjustment system for automotive tape slitting machines, automatic tension adjustment is achieved through adjustment and fixing mechanisms, solving the problem of unstable tension control, improving production efficiency and product quality, and enhancing the practicality of the slitting machine.

CN224015024UActive Publication Date: 2026-03-20WUHU ZHISHENG AUTO PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-21
Publication Date
2026-03-20

AI Technical Summary

Technical Problem

The tension control of automotive tape slitting machines is unstable during the slitting process, which leads to tape stretching, deformation, breakage or wrinkling. In addition, the traditional manual adjustment method is time-consuming, labor-intensive and difficult to achieve precise control, which affects product quality and production efficiency.

Method used

A tension adjustment system for an automotive tape slitting machine was designed, including a slitting roller, a take-up roller, a guide roller, and a tensioning roller. Automatic tension adjustment is achieved through an adjustment mechanism and a fixing mechanism. The system utilizes a pressure sensor and a motor to automatically adjust the tension according to changes in the diameter of the take-up drum, and the take-up drum is quickly fixed by the fixing mechanism.

Benefits of technology

It achieves automatic adjustment and rapid fixing of tape tension, improves the production efficiency and product quality stability of the slitting machine, and enhances the practicality of the slitting machine.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a tension adjusting system of a vehicle adhesive tape splitting machine, which relates to the technical field of adhesive tape splitting and comprises a splitting roller and a wind-up roller, a plurality of wind-up drums are sleeved on the wind-up roller, guide rollers are symmetrically arranged between the splitting roller and the wind-up roller, a tension roller is arranged between the guide rollers, and the tension roller is connected with the splitting roller. An adjusting mechanism is arranged at the bottom end in the splitting machine body, and a fixing mechanism is arranged in the winding roller. Through the arrangement of the adjusting mechanism, the pressure sensor and the second motor are matched for use according to the increase of the winding diameter of the winding drum, and then the working height of the tensioning roller is adjusted, so that the tensioning degree of an adhesive tape can be automatically adjusted, and the practicability of the tension adjusting system of the automotive adhesive tape splitting machine is improved; according to the automotive adhesive tape splitting machine, the fixing mechanisms are arranged in the winding rollers, so that the multiple winding drums can be conveniently and rapidly fixed, the adhesive tape splitting and winding efficiency is improved, and the practicability of the automotive adhesive tape splitting machine is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of adhesive tape slitting, in particular to a tension adjusting system of adhesive tape slitting machine for vehicle. BACKGROUND

[0002] In the automobile manufacturing and related industries, the application of adhesive tape for vehicle is extremely wide, such as the fixing of automotive interior, the bandaging of wire harness, etc. In order to meet different use requirements, the adhesive tape for vehicle needs to be cut into various specifications of small roll adhesive tape by using a slitting machine in the production process. In the slitting process, the adhesive tape slitting machine often faces the problem of unstable tension control. For the adhesive tape for vehicle, improper tension control may lead to phenomena such as stretching deformation, rupture or wrinkling of the adhesive tape in the slitting process.

[0003] In addition, with the increasing requirements of the automobile industry on production efficiency and product quality, the traditional manual tension adjusting mode has been difficult to meet the production needs. Manual adjustment not only consumes time and effort, but also is difficult to achieve accurate control. The tension adjusted by different operators may also differ, leading to unstable product quality.

[0004] Based on this, the tension adjusting system of the adhesive tape slitting machine for vehicle is provided, which can eliminate the disadvantages of the existing device. SUMMARY

[0005] The utility model aims at providing a tension adjusting system of adhesive tape slitting machine for vehicle to solve the problem of inconvenient automatic adjustment of the tension of the adhesive tape for vehicle in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The tension adjusting system of the adhesive tape slitting machine for vehicle comprises a slitting roller and a winding roller. The two ends of the slitting roller are rotatably arranged in the mounting holes on the inner side of the body of the slitting machine. A fixed roller is arranged below the slitting roller. The winding roller is installed at the other end of the inner side of the body of the slitting machine. A plurality of winding drums are installed on the winding roller in a sleeved manner. A guide roller is symmetrically arranged between the slitting roller and the winding roller. A tension roller is arranged between the guide rollers. A rotating block is rotatably arranged on the two ends of the tension roller. A guide slot rod is slidably arranged on both sides of the rotating block. The guide slot rods are fixedly arranged on the inner side of the body of the slitting machine. An adjusting mechanism for adjusting the working position of the tension roller is arranged at the bottom end of the body of the slitting machine. The winding roller is internally provided with a fixing mechanism for quickly fixing the plurality of winding drums.

[0008] On the basis of the above technical scheme, the utility model also provides the following optional technical schemes:

[0009] In one alternative embodiment: one end of the slitting roller's rotating shaft is fixedly connected to the output end of the first motor, the first motor is fixedly mounted on one side of the slitting machine body, bearings are fixedly mounted at both ends of the take-up roller, a driven gear is fixedly mounted on the rotating shaft at one end of the take-up roller, mounting grooves are symmetrically provided at one end of the slitting machine body, sliding stop plates are provided in each mounting groove, the stop plates are fixedly mounted on the output end of the electric push rod, the electric push rod is fixedly mounted inside the slitting machine body, a driving gear is meshed on the driven gear, the driving gear is fixedly mounted on the output end of the third motor, and the third motor is fixedly mounted inside the slitting machine body.

[0010] In one alternative embodiment: the adjusting mechanism includes an elastic telescopic rod, the rotating block is fixedly mounted on the output end of the elastic telescopic rod, a pressure sensor is fixedly mounted inside the elastic telescopic rod, a first connecting rod is hinged to the bottom end of the elastic telescopic rod, a sliding block is hinged to the other side of the first connecting rod, the two sliding blocks are symmetrically arranged, a sliding hole and a threaded hole are provided on one side of each sliding block, the sliding blocks are slidably mounted on a guide slide rod, the guide slide rod is fixedly mounted inside the slitting machine body, the sliding blocks are threadedly connected to a bidirectional screw through the threaded hole, the two ends of the bidirectional screw are rotatably mounted in the mounting holes inside the slitting machine body, one end of the bidirectional screw is fixedly connected to the output end of a second motor, and the second motor is fixedly mounted on one side of the slitting machine body.

[0011] In one alternative embodiment: the fixing mechanism includes a positioning slide rod, the take-up roller has a sliding groove, the positioning slide rod is slidably disposed in the sliding groove, a limiting plate is fixedly disposed inside the take-up roller at a position corresponding to both sides of the sliding groove, the bottom end of the positioning slide rod has an installation groove, a plurality of positioning pins are fixedly disposed in the installation groove, a second connecting rod is hinged to each positioning pin, the other end of the second connecting rod is hinged to the upper end of the mounting rod, a plurality of threaded holes are evenly spaced on the upper end of the positioning slide rod, positioning blocks are symmetrically disposed on the upper end of the positioning slide rod, the positioning blocks are fixedly connected to the positioning slide rod by screws, a limiting block is disposed at the bottom end of the positioning blocks, a plurality of positioning grooves are evenly spaced on the positioning slide rod, a fixing plate is fixedly disposed at one end of the mounting rod, the fixing plate is slidably disposed inside the fixing tube, the fixing tube is fixedly disposed inside the take-up roller, a first return spring is disposed between one side of the fixing plate and one end of the fixing tube, and a limiting component for fixing the mounting rod is disposed at one end of the take-up roller.

[0012] In an alternative: the limiting assembly includes a mounting rod, the other end of the mounting rod is provided with a fixed plate, a limiting rod is fixedly arranged on one side of the fixed plate, a limiting frame is tightly arranged on the limiting rod, limiting slide rods are slidably arranged on both sides of the limiting frame, the limiting slide rods are fixedly arranged in the winding roller, a second return spring is arranged on the upper end of the limiting frame, the other end of the second return spring is fixedly connected with the winding roller, and a pushing frame is arranged at the bottom end of the limiting frame.

[0013] In an alternative: the winding roller is fixedly provided with a fixed strip, and the winding drum is provided with a limiting groove.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The adjusting mechanism is arranged, the pressure sensor is used in cooperation with the second motor, the working height of the tensioning roller is adjusted, the tension of the adhesive tape is automatically adjusted, the practicality of the tension adjusting system of the vehicle adhesive tape slitting machine is improved, the fixed mechanism is arranged in the winding roller, a plurality of winding drums are quickly fixed, the adhesive tape slitting and winding efficiency is improved, and the practicality of the vehicle adhesive tape slitting machine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model.

[0017] Figure 2 It is a guiding roller installation schematic view of the utility model.

[0018] Figure 3 It is a third motor installation schematic view of the utility model.

[0019] Figure 4 It is a winding roller internal structure schematic view of the utility model.

[0020] Figure 5 It is a positioning slide rod structure schematic view of the utility model.

[0021] Figure 6 It is a limiting rod and limiting frame structure schematic view of the utility model.

[0022] Figure 7 It is a limiting plate installation schematic view of the utility model.

[0023] Figure 8 It is a bidirectional screw installation schematic view of the utility model.

[0024] Figure 9 It is a pressure sensor installation schematic view of the utility model.

[0025] The reference signs are annotated: 11 is a slitting machine body, 12 is a slitting roller, 13 is a first motor, 14 is a fixed roller, 15 is a guide roller, 16 is a tensioning roller, 17 is a rotating block, 18 is an elastic telescopic rod, 19 is a pressure sensor, 20 is a first connecting rod, 21 is a sliding block, 22 is a bidirectional screw rod, 23 is a second motor, 24 is a winding roller, 25 is a winding drum, 26 is a bearing, 27 is a driven gear, 28 is a driving gear, 29 is a third motor, 30 is a positioning sliding rod, 31 is a positioning block, 32 is a second connecting rod, 33 is a mounting rod, 34 is a first return spring, 35 is a limiting rod, 36 is a limiting frame, 37 is a second return spring, 38 is a limiting plate, 39 is a stop plate, and 40 is an electric push rod. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples.

[0027] In one embodiment, as shown in Figures 1-9 The vehicle adhesive tape slitting machine tension adjusting system comprises a slitting roller 12 and a winding roller 24, the two ends of the slitting roller 12 are rotatably arranged in the inner side mounting holes in the inside of the slitting machine body 11, a fixed roller 14 is arranged below the slitting roller 12, the winding roller 24 is arranged at the other end of the inner side of the slitting machine body 11, a plurality of winding drums 25 are sleeved and arranged on the winding roller 24, guide rollers 15 are symmetrically arranged between the slitting roller 12 and the winding roller 24, a tensioning roller 16 is arranged between the guide rollers 15, rotating blocks 17 are rotatably arranged on the two ends of the tensioning roller 16, guide slot rods are slidably arranged on the two sides of the rotating blocks 17, the guide slot rods are fixedly arranged in the inside of the slitting machine body 11, an adjusting mechanism for adjusting the working position of the tensioning roller 16 is arranged at the bottom end of the inside of the slitting machine body 11, a fixing mechanism for quickly fixing the plurality of winding drums 25 is arranged in the inside of the winding roller 24, the working position of the tensioning roller 16 is adjusted by the adjusting mechanism, so that the tension of the adhesive tape is automatically adjusted, and the fixing mechanism is convenient for quickly installing and fixing the winding drum 25.

[0028] The one end rotating shaft of the slitting roller 12 is fixedly connected with the output end of the first motor 13, the first motor 13 is fixedly arranged on one side of the slitting machine body 11, the both ends of the winding roller 24 are fixedly provided with bearings 26, the one end rotating shaft of the winding roller 24 is fixedly provided with a driven gear 27, one end of the slitting machine body 11 is symmetrically provided with a mounting slot, the mounting slot is slidably provided with a stop plate 39, the stop plate 39 is fixedly arranged on the output end of an electric push rod 40, the electric push rod 40 is fixedly arranged in the slitting machine body 11, the driven gear 27 is meshingly provided with a driving gear 28, the driving gear 28 is fixedly arranged on the output end of a third motor 29, the third motor 29 is fixedly arranged in the slitting machine body 11, when the adhesive tape needs to be slitted and wound, the winding drum 25 is sleeved on the winding roller 24, then the winding roller 24 is mounted in the mounting slot, then the output end of the electric push rod 40 drives the stop plate 39 to move, so that the outer ring of the bearing 26 is limited, thereby limiting the winding roller 24, the wide adhesive tape is passed between the slitting roller 12 and the fixed roller 14, so that the wide adhesive tape can be slitted, then the upper end of the adhesive tape is tightly attached to the guide roller 15, the bottom end of the adhesive tape is tightly attached to the tensioning roller 16, then one end of the adhesive tape is fixedly connected with the winding drums 25, the third motor 29 is started, the third motor 29 drives the winding roller 24 to rotate through the meshing of the driving gear 28 and the driven gear 27, the winding roller 24 drives the winding drums 25 to rotate, thereby winding the adhesive tape.

[0029] The adjusting mechanism comprises elastic telescopic rods 18, the rotating blocks 17 are fixedly arranged on the output ends of the elastic telescopic rods 18, pressure sensors 19 are fixedly arranged in the elastic telescopic rods 18, first connecting rods 20 are hingedly arranged at the bottom ends of the elastic telescopic rods 18, sliding blocks 21 are hingedly arranged at the other sides of the first connecting rods 20, the two sliding blocks 21 are symmetrically arranged, sliding holes and threaded holes are formed in one side of the sliding blocks 21, the sliding blocks 21 are slidably arranged on guide sliding rods, the guide sliding rods are fixedly arranged on the inner sides of the slitting machine bodies 11, the sliding blocks 21 are in threaded connection with bidirectional screw rods 22 through the threaded holes, the two ends of the bidirectional screw rods 22 are rotatably arranged in mounting holes in the inner sides of the slitting machine bodies 11, one end of the bidirectional screw rod 22 is fixedly connected with the output end of a second motor 23, and the second motor 23 is fixedly arranged on one side of the slitting machine body 11. When the winding drum 25 is used to wind the rubber belt, the diameter of the winding drum 25 increases, the rubber belt is stretched, the tensioning roller 16 is acted on by the rubber belt, the output end of the elastic telescopic rod 18 is contracted, and the output end of the elastic telescopic rod 18 extrudes the pressure sensor 19. At this time, the pressure sensor 19 is electrically connected with an external control component, the external control component controls the second motor 23 to start, the second motor 23 drives the bidirectional screw rod 22 to rotate, the two sliding blocks 21 are moved in opposite directions under the action of the threads, the sliding blocks 21 drive the tensioning roller 16 to move through the first connecting rods 20, and the tension of the rubber belt is adjusted.

[0030] The fixing mechanism comprises a positioning sliding rod 30, a sliding groove is arranged on the winding roller 24, the positioning sliding rod 30 is slidably arranged in the sliding groove, limit plates 38 are fixedly arranged at positions corresponding to the two sides of the sliding groove in the winding roller 24, an installation groove is arranged at the bottom end of the positioning sliding rod 30, a plurality of positioning pins are fixedly arranged in the installation groove, second connecting rods 32 are hingedly arranged on the positioning pins, the second connecting rods 32 are hingedly connected with the upper ends of mounting rods 33, a plurality of threaded holes are equidistantly arranged at the upper end of the positioning sliding rod 30, positioning blocks 31 are symmetrically arranged at the upper end of the positioning sliding rod 30, the positioning blocks 31 are fixedly connected with the positioning sliding rod 30 through screws, limit blocks are arranged at the bottom ends of the positioning blocks 31, a plurality of positioning grooves are equidistantly arranged on the positioning sliding rod 30, a fixing disc is fixedly arranged at one end of the mounting rod 33, the fixing disc is slidably arranged in a fixing tube, the fixing tube is fixedly arranged in the winding roller 24, a first return spring 34 is arranged between one side of the fixing disc and one end of the fixing tube, and a limiting assembly for fixing the mounting rod 33 is arranged at one end of the winding roller 24.

[0031] The limiting assembly includes the other end of the mounting rod 33 is provided with a fixed plate, one side of the fixed plate is fixedly provided with a limiting rod 35, the limiting rod 35 is closely provided with a limiting frame 36, the limiting frame 36 is slidably provided with a limiting slide rod on both sides, the limiting slide rod is fixedly provided in the inside of the winding roller 24, the limiting frame 36 is provided with a second reset spring 37 on the upper end, the other end of the second reset spring 37 is fixedly connected with the inside of the winding roller 24, the limiting frame 36 is provided with a push frame at the bottom end, when it is needed to quickly fix the winding drum 25, according to the length of the several winding drums 25, two positioning blocks 31 are installed on the positioning slide rod 30, in the initial state, the positioning slide rod 30 drives the positioning block 31 to move to the inside of the winding roller 24, then the winding drum 25 is installed on the winding roller 24, then the mounting rod 33 is slid by the fixed plate, the mounting rod 33 drives the positioning slide rod 30 to slide through the several second connecting rods 32, so that the several winding drums 25 are between the two positioning blocks 31, thereby fixing the winding drum 25, at the same time, the limiting rod 35 lifts the limiting frame 36, when the fixed plate is closely attached to one end of the winding roller 24, under the action of the second reset spring 37, the limiting frame 36 returns to the initial position, thereby fixing the winding roller 24.

[0032] The winding roller 24 is fixedly provided with a fixed strip, and the winding drum 25 is provided with a limiting groove.

[0033] The above embodiment discloses a tape cutting machine tension adjusting system for vehicles, wherein when the winding drum 25 needs to be quickly fixed, according to the length of the winding drum 25, two positioning blocks 31 are installed on the positioning slide rod 30, in the initial state, the positioning slide rod 30 drives the positioning block 31 to move to the inside of the winding roller 24, then the winding drum 25 is installed on the winding roller 24, then the fixed plate pushes the installation rod 33 to slide, the installation rod 33 drives the positioning slide rod 30 to slide through the second connecting rod 32, so that the winding drums 25 are between the two positioning blocks 31, and then the winding drum 25 is fixed, and at the same time the limiting rod 35 lifts the limiting frame 36, when the fixed plate is close to one end of the winding roller 24, under the action of the second return spring 37, the limiting frame 36 returns to the initial position, and then the winding roller 24 is fixed, the winding roller 24 is installed in the installation groove, then the output end of the electric push rod 40 drives the stop plate 39 to move, so that the outer ring of the bearing 26 is limited, so that the winding roller 24 is limited, the wide tape passes between the cutting roller 12 and the fixed roller 14, so that the wide tape can be cut, then the upper end of the tape is close to the guide roller 15, and the bottom end of the tape is close to the tensioning roller 16, then one end of the tape is fixedly connected with the winding drums 25, the third motor 29 is started, the third motor 29 is engaged with the driving gear 28 and the driven gear 27, so that the winding roller 24 is driven to rotate, the winding roller 24 drives the winding drums 25 to rotate, and then the tape is wound, when the winding diameter of the winding drum 25 increases during winding the tape, the tape is stretched straight, so that the tape acts on the tensioning roller 16, the output end of the elastic expansion rod 18 is retracted, so that the output end of the elastic expansion rod 18 extrudes the pressure sensor 19, at this time, the pressure sensor 19 is electrically connected with the external control component, the external control component controls the second motor 23 to start, the second motor 23 drives the bidirectional screw 22 to rotate, under the action of the screw, the two sliding blocks 21 move in opposite directions, the sliding block 21 drives the tensioning roller 16 to move through the first connecting rod 20, and then the tape tension is adjusted.

[0034] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A tension adjustment system for an automotive tape slitting machine, comprising a slitting roller (12) and a take-up roller (24), wherein the slitting roller (12) has rotating shafts at both ends rotatably mounted in mounting holes inside the slitting machine body (11), a fixed roller (14) is fitted below the slitting roller (12), the take-up roller (24) is mounted at the other end inside the slitting machine body (11), a plurality of take-up drums (25) are sleeved on the take-up roller (24), and guide rollers (15) are symmetrically arranged between the slitting roller (12) and the take-up roller (24), characterized in that, Tensioning rollers (16) are provided between the guide rollers (15). Rotating blocks (17) are rotatably provided on the rotating shafts at both ends of the tensioning rollers (16). Guide groove rods are slidably provided on both sides of the rotating blocks (17). The guide groove rods are fixedly provided inside the slitting machine body (11). An adjustment mechanism for adjusting the working position of the tensioning rollers (16) is provided at the bottom inside the slitting machine body (11). A fixing mechanism for quickly fixing several take-up drums (25) is provided inside the take-up roller (24).

2. The tension adjustment system for an automotive tape slitting machine according to claim 1, characterized in that, One end of the slitting roller (12) is fixedly connected to the output end of the first motor (13). The first motor (13) is fixedly mounted on one side of the slitting machine body (11). Both ends of the take-up roller (24) are fixedly provided with bearings (26). A driven gear (27) is fixedly mounted on the rotating shaft of one end of the take-up roller (24). One end of the slitting machine body (11) is symmetrically provided with mounting grooves. Sliding stop plates (39) are all in the mounting grooves. The stop plates (39) are fixedly mounted on the output end of the electric push rod (40). The electric push rod (40) is fixedly mounted inside the slitting machine body (11). A driving gear (28) is meshed on the driven gear (27). The driving gear (28) is fixedly mounted on the output end of the third motor (29). The third motor (29) is fixedly mounted inside the slitting machine body (11).

3. The tension adjustment system for an automotive tape slitting machine according to claim 2, characterized in that, The adjusting mechanism includes an elastic telescopic rod (18), a rotating block (17) fixedly mounted on the output end of the elastic telescopic rod (18), a pressure sensor (19) fixedly mounted inside the elastic telescopic rod (18), a first connecting rod (20) hinged to the bottom end of the elastic telescopic rod (18), and a sliding block (21) hinged to the other side of the first connecting rod (20). The two sliding blocks (21) are symmetrically arranged, and each sliding block (21) has a sliding hole and a thread on one side. The sliding blocks (21) are all slidably mounted on the guide slide rods. The guide slide rods are all fixedly mounted inside the body (11) of the slitting machine. The sliding blocks (21) are all threadedly connected to the bidirectional screw (22) through threaded holes. The two ends of the bidirectional screw (22) are rotatably mounted in the mounting holes inside the body (11) of the slitting machine. One end of the bidirectional screw (22) is fixedly connected to the output end of the second motor (23). The second motor (23) is fixedly mounted on one side of the body (11) of the slitting machine.

4. The tension adjustment system for an automotive tape slitting machine according to claim 2, characterized in that, The fixing mechanism includes a positioning slide rod (30). A sliding groove is provided on the take-up roller (24), and the positioning slide rod (30) is slidably mounted within the sliding groove. Limiting plates (38) are fixedly mounted inside the take-up roller (24) at positions corresponding to both sides of the sliding groove. An installation groove is provided at the bottom of the positioning slide rod (30), and several positioning pins are fixedly mounted within the installation groove. A second connecting rod (32) is hinged to each positioning pin, and the other end of each second connecting rod (32) is hinged to the upper end of an installation rod (33). Several threaded holes are evenly spaced at the upper end of the positioning slide rod (30). The upper end of the rod (30) is symmetrically provided with positioning blocks (31), the positioning blocks (31) are fixedly connected to the positioning slide rod (30) by screws, the bottom end of the positioning blocks (31) is provided with a limiting block, the positioning slide rod (30) is provided with several positioning grooves at equal intervals, one end of the mounting rod (33) is fixedly provided with a fixing plate, the fixing plate is slidably disposed inside the fixing tube, the fixing tube is fixedly disposed inside the take-up roller (24), one side of the fixing plate is provided with a first return spring (34) between one end of the fixing plate and one end of the fixing tube, and one end of the take-up roller (24) is provided with a limiting component for fixing the mounting rod (33).

5. The tension adjustment system for an automotive tape slitting machine according to claim 4, characterized in that, The limiting assembly includes a mounting rod (33) with a fixed plate at the other end. A limiting rod (35) is fixedly provided on one side of the fixed plate. A limiting frame (36) is closely attached to the limiting rod (35). Limiting slide rods are slidably provided on both sides of the limiting frame (36). The limiting slide rods are all fixedly provided inside the take-up roller (24). A second return spring (37) is provided at the upper end of the limiting frame (36). The other end of the second return spring (37) is fixedly connected to the inside of the take-up roller (24). A push frame is provided at the bottom end of the limiting frame (36).

6. The tension adjustment system for an automotive tape slitting machine according to claim 1, characterized in that, The take-up roller (24) is fixedly provided with a fixing strip, and the take-up cylinder (25) is provided with a limiting groove.