Crown belt tension adjusting device and multi-station crown belt winding system

Abstract

The utility model discloses a kind of crown belt tension adjusting device and multi-station crown belt winding system, belong to tire production equipment technical field.The device includes mounting bracket, guide opening component, winding shaft, buffer mechanism, guide wheel and adjusting mechanism.Guide opening component includes guide opening shaft and friction roller.Buffer mechanism includes lifting assembly, the mechanism includes vertically arranged guide rail, sliding block with guide rail sliding cooperation, and float roller rotatably mounted on the sliding block, the float roller with sliding block has downward tendency by its own gravity;It can be quickly realized to adjust tension, especially suitable for multiple devices share a guide opening shaft Multi-station parallel production system, effectively improve production efficiency and winding quality.

Description

Technical Field

[0001] This utility model relates to the field of tire manufacturing equipment technology, specifically to a crown belt tension adjustment device and a multi-station crown belt winding system. Background Technology

[0002] In tire manufacturing, tension control during crown belt winding is crucial. Excessive tension can lead to overstretching, deformation, or even breakage of the crown belt, affecting tire strength and durability; insufficient tension will cause the crown belt to loosen and fold, resulting in loose winding, wrinkles, or air bubbles. Existing technologies, such as the patent "A Crown Belt Layer Cord Slitting Machine and Its Winding Tension Control," use two sets of guide wheels with photoelectric induction to control tension, resulting in a complex structure that is not suitable for compact multi-station layouts. Therefore, there is an urgent need for a crown belt winding device with a simple, compact structure that can achieve high-precision tension control. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a crown tension adjustment device that is compact in structure, easy to adjust, and conducive to multi-station layout.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a crown strap tension adjustment device, comprising a mounting frame, a guide assembly, a winding shaft, a buffer mechanism, and a guide wheel. The guide assembly includes a guide shaft rotatably mounted on the mounting frame and a friction roller mounted on the guide shaft, from which the crown strap is guided. The winding shaft is rotatably mounted on the mounting frame for winding the crown strap. The buffer mechanism includes a lifting assembly, which includes a vertically arranged guide rail, a slider slidably engaged with the guide rail, and a floating roller rotatably mounted on the slider. The floating roller and the slider have a downward tendency due to their own gravity. The guide wheel is rotatably mounted on the mounting frame and is located upstream of the winding shaft to adjust the crown strap traction direction of the floating roller. After being led out via the guide shaft, the crown strap passes sequentially around the floating roller and the guide wheel before being wound onto the winding shaft. The distance sensor is used to detect the position of the floating roller on the lifting assembly.

[0005] In some embodiments, the device further includes an adjustment mechanism comprising a swing arm oscillatingly disposed on the mounting frame and a swing roller disposed at the free end of the swing arm, the swing roller being disposed between the guide wheel and the take-up shaft.

[0006] In some embodiments, the axis of the guide shaft is perpendicular to the axis of the take-up shaft, the axis of the guide wheel is perpendicular to the axis of the guide shaft, and the axis of the oscillating roller is parallel to the axis of the take-up shaft.

[0007] In some embodiments, a manual damper is provided between the guide shaft and the mounting bracket to provide an adjustable damping torque for the rotation of the guide shaft, thereby indirectly adjusting the guide speed of the friction roller.

[0008] In some embodiments, the damper is a manual damper, comprising a friction plate and an adjusting screw.

[0009] In some embodiments, the lifting assembly is a guide rail slider assembly, and the rotating shaft of the floating roller is mounted on the slider.

[0010] In some embodiments, the adjustment mechanism further includes a tension adjuster connected to the rocker arm and configured to provide adjustable damping for the rocker arm's oscillation.

[0011] In some embodiments, the tension regulator is a manual brake.

[0012] In some embodiments, the mounting frame is provided with a bracket, and the guide wheel and the pivot of the swing arm are mounted on the bracket.

[0013] This utility model also provides a multi-station crown band winding system, which includes multiple crown band tension adjustment devices arranged in parallel according to any of the aforementioned embodiments, wherein the multiple crown band tension adjustment devices share a single guide shaft.

[0014] This invention achieves stable control of crown belt tension through the organic combination of mechanical buffering and manual adjustment. The passive floating of the floating roller provides instantaneous buffering, and the operator manually adjusts the guide speed according to the floating roller position indicator, while simultaneously fine-tuning the winding tension based on the swing of the swing arm. The entire device has a compact structure, intuitive and reliable adjustment, and is particularly suitable for multi-station production systems with multiple devices arranged side-by-side along a common guide shaft. In the multi-station implementation of this invention, multiple crown belt tension adjustment devices can be arranged side-by-side along the axial direction of a common guide shaft. Each station has an independent buffer mechanism, adjustment mechanism, winding shaft, and manual adjustment device, enabling efficient and parallel production of multiple crown belt rolls while ensuring the independence and accuracy of tension control at each station. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention.

[0016] In the diagram: 1-winding shaft; 2-bearing with seat; 3-guide shaft; 4-friction roller; 5-distance sensor; 61, 62-guide rail slider assembly; 7-floating roller; 8-tension adjuster; 9-swing rod; 10-guide wheel; 11-oscillating roller; 12-mounting frame; 13-bracket. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] Example 1: Manual Adjustment Method

[0019] Reference Figure 1 This embodiment provides a crown belt tension adjustment device, including a mounting frame 12, a guide assembly, a winding shaft 1, a buffer mechanism, a guide wheel 10, and an adjustment mechanism.

[0020] The guide shaft assembly includes a guide shaft 3 rotatably mounted on the mounting bracket 12 via a bearing seat. A friction roller 4, which can rotate independently, is sleeved on the guide shaft 3 via a bearing, and the crown strip roll is sleeved on the friction roller 4 and rotates together with it.

[0021] The buffer mechanism includes a lifting assembly, a floating roller 7 rotatably mounted on the lifting assembly, and a distance sensor 5 for detecting the position of the floating roller 7. The floating roller 7 is located below the friction roller 4 to support the crown strap. The guide wheel 10 is rotatably mounted on the mounting frame 12. The buffer mechanism balances the instantaneous speed fluctuations between the guide and take-up in real time and dynamically through the automatic lifting of the floating roller. It converts speed differences that may cause quality problems into a position signal that is visually observable through the height of the floating roller, providing an intuitive basis for subsequent manual macroscopic adjustments. When the take-up speed of the take-up shaft is faster than the guide speed of the friction roller, the crown strap is tightened, and the upward pull applied to the floating roller increases. This increased pull overcomes the gravity of the floating roller assembly, pulling the entire floating roller assembly to rise automatically and smoothly along the guide rail. It automatically and instantly compensates for the insufficient guide speed, avoiding excessive stretching or breakage of the crown strap due to instantaneous speed differences. When the guide speed is instantaneously faster than the take-up speed, the crown strap becomes loose, and the upward pull applied to the floating roller decreases. At this point, the floating roller assembly automatically descends along the guide rail under its own gravity. Excess, loose crown straps are collected and stored as buffer length, thus automatically and instantly absorbing excess crown strap supply and preventing problems such as folds, wrinkles, or tangles caused by crown strap accumulation.

[0022] The take-up shaft 1 is rotatably mounted on the mounting frame 12 and is used to take up the crown tape.

[0023] After being led out via the guide shaft, the crown belt passes sequentially around the floating roller and the guide wheel before being wound onto the take-up shaft; the distance sensor is used to detect the position of the floating roller on the lifting assembly.

[0024] From the appendix Figure 1It can be seen that: the axis of the guide shaft 3 is perpendicular to the axis of the take-up shaft 1; the axis of the guide wheel 10 is perpendicular to the axis of the guide shaft 3; and the axis of the oscillating roller 11 is parallel to the axis of the take-up shaft 1. The crown belt is led downward from the friction roller / guide shaft located above, and after passing around the floating roller, its direction of movement is downward. The core function of the guide wheel is to forcibly change the transmission path of the crown belt: it receives the crown belt from the floating roller, which is moving downward, and guides the crown belt to achieve a large-angle turn through its arc-shaped outer edge, changing its direction of movement from downward to upward, and finally leading it to the oscillating roller and the take-up shaft. This path planning effectively integrates the four functional modules of guide, buffer, tension fine-tuning and take-up into a reasonable three-dimensional space. It is this compact design that allows multiple devices to be arranged closely side by side along a single guide shaft, which is particularly suitable for multi-station parallel production systems.

[0025] In some preferred embodiments of this model, to achieve stable control of the opening tension of the crown band, a manual damper is provided between the opening shaft 3 and the mounting bracket 12. This damper provides an adjustable damping torque for the rotation of the opening shaft, thereby indirectly adjusting the opening speed of the friction roller. The manual damper includes a friction plate mounted on a bearing seat on one side of the friction roller 4, and an adjusting screw for pressing the friction plate. By manually rotating the adjusting screw forward or backward, the pressing force of the pressure block on the friction plate is adjusted, thus achieving manual adjustment of the damping force of the friction roller 4.

[0026] In some preferred embodiments of this example, the adjustment mechanism includes a rocker arm 9 and a swing roller 11. The rocker arm 9 is oscillatingly mounted on a bracket 13 via a pivot. The swing roller 11 is mounted on the free end of the rocker arm 9 via a bearing.

[0027] More preferably, to further adjust the tension of the crown band during traction, the adjustment mechanism also includes a tension adjuster 8. The swing arm 9 is oscillatingly mounted on the bracket 13 via a pivot. The swing roller 11 is mounted on the free end of the swing arm 9 via a bearing.

[0028] The tension regulator 8 is a manual brake, and the tension regulator is a friction damper, including friction plates and an adjusting screw for adjusting the clamping force of the friction plates. It includes a friction disc, friction plates, and an adjusting screw. The pivot of the swing arm 9 is fixed to a friction disc via a key connection or flange, allowing the friction disc to swing together with the swing arm 9. The friction disc has friction plates fixed to the bracket 13 on both sides. An adjusting screw mechanism is mounted on the bracket 13, with the end of its screw pushing against a pressure block. Rotating the screw controls the clamping force of the pressure block on the friction plates, thereby adjusting the frictional resistance experienced by the friction disc during rotation.

[0029] Under the pressure of the crown band, the oscillating roller 11 is subjected to a tendency to cause the oscillating arm 9 to oscillate around its axis. To achieve this oscillation, the frictional torque generated by the friction damping device must be overcome. When the crown band tension increases, its pulling force on the oscillating roller 11 increases, attempting to drive the oscillating arm 9 to oscillate in the direction of increasing the crown band wrap angle. If the operator manually reduces the tightening force of the adjusting screw, the frictional damping decreases, and the oscillating arm 9 is more easily pulled and oscillated. This oscillation releases a small amount of crown band, thus immediately alleviating the increase in tension. When the crown band tension decreases, its pulling force on the oscillating roller 11 weakens. If the operator manually increases the tightening force of the adjusting screw, the frictional damping increases, and the oscillation of the oscillating arm 9 is more strongly suppressed. The crown band is tightened under the traction of the take-up shaft, and because the oscillating arm 9 is difficult to push, the crown band tension is quickly restored and increased.

[0030] The tension regulator 8 is directly connected to the shaft of the swing arm 9. In this embodiment, the tension regulator 8 adopts a manual clutch structure. As mentioned above, it also includes a friction plate and an adjusting screw. The clamping force of the friction plate is changed by manually adjusting the screw, thereby providing an adjustable damping torque for the swing of the swing arm 9.

[0031] Exemplarily, a tension adjustment process is provided herein:

[0032] The operator monitors the position of the floating roller 7 by observing the display value of the distance sensor 5.

[0033] When the floating roller 7 remains at a high position, it indicates that the winding speed is greater than the unwinding speed. The operator should manually increase the damping force of the friction roller 4 to slow down the unwinding speed.

[0034] When the floating roller 7 remains in a low position, it indicates that the opening speed is greater than the winding speed. The operator should manually reduce the damping force of the friction roller 4 to speed up the opening speed.

[0035] The operator senses the instantaneous tension change of the coronary band by observing the swing amplitude of the swing arm 9, and makes fine adjustments using the tension regulator 8: when the coronary band tension increases, the operator manually reduces the tightening force of the adjusting screw of the tension regulator 8 to reduce frictional damping, making the swing arm 9 easier to swing and release tension. When the coronary band tension decreases, the operator manually increases the tightening force of the adjusting screw of the tension regulator 8 to increase frictional damping, suppressing the swing of the swing arm 9 and increasing tension.

[0036] Example 2: Electric Adjustment Method

[0037] As another implementation, the device can also be electrically adjusted. The damper of the friction roller 4 is a magnetic powder brake, and the output braking torque is changed by adjusting the magnitude of the excitation current to the magnetic powder brake. The tension regulator 8 is a magnetic powder clutch, and the damping torque that resists the swing of the pendulum 9 is changed by adjusting the excitation current of the magnetic powder clutch. The operator manually adjusts the corresponding current value according to the display of the distance sensor and the pendulum swing sensor to achieve tension control.

[0038] In the multi-station embodiment of this utility model, multiple crown tension adjustment devices can be arranged side by side along a common guide shaft 3. Each station has an independent buffer mechanism, adjustment mechanism, and winding shaft 1, thereby realizing efficient and parallel production of multiple crown bands.

Claims

1. A crown band tension adjusting device, characterized in that, include: Mounting rack; The guide assembly includes a guide shaft rotatably disposed on the mounting frame and a friction roller disposed on the guide shaft, wherein the crown belt is guided away from the friction roller; A take-up shaft, rotatably mounted on the mounting frame, is used to take up the crown tape; The buffer mechanism includes a lifting assembly, which includes a vertically arranged guide rail, a slider that slides with the guide rail, a floating roller rotatably mounted on the slider, and a distance sensor for detecting the position of the floating roller. The floating roller and the slider have a downward tendency due to their own gravity. A guide wheel, rotatably mounted on the mounting frame and located upstream of the take-up shaft, is provided to adjust the crown belt traction direction of the floating roller. After being led out via the guide shaft, the crown belt passes sequentially around the floating roller and the guide wheel before being wound onto the take-up shaft; the distance sensor is used to detect the position of the floating roller on the lifting assembly.

2. The crown band tension adjusting device according to claim 1, characterized in that, The device further includes an adjustment mechanism, which includes a swing arm oscillatingly disposed on the mounting frame and a swing roller disposed at the free end of the swing arm, the swing roller being disposed between the guide wheel and the winding shaft.

3. The crown band tension adjusting device according to claim 2, characterized in that, The axis of the guide shaft is perpendicular to the axis of the take-up shaft, the axis of the guide wheel is perpendicular to the axis of the guide shaft, and the axis of the oscillating roller is parallel to the axis of the take-up shaft.

4. The crown band tension adjusting device according to claim 1, characterized in that, A manual damper is provided between the guide shaft and the mounting bracket to provide an adjustable damping torque for the rotation of the guide shaft, thereby indirectly adjusting the guide speed of the friction roller.

5. The crown band tension adjusting device according to claim 4, characterized in that, The damper is a manual damper.

6. The crown band tension adjusting device according to claim 1, characterized in that, The shaft of the floating roller is mounted on the slider.

7. The crown band tension adjusting device according to claim 2, characterized in that, The adjustment mechanism further includes a tension adjuster connected to the swing arm and configured to provide adjustable damping for the swing of the swing arm.

8. The crown band tension adjusting device according to claim 7, characterized in that, The tension regulator is a manual brake.

9. The crown band tension adjusting device according to claim 1 or 2, characterized in that, The mounting frame is provided with a bracket, and the guide wheel and the pivot of the swing arm are mounted on the bracket.

10. A multi-station crown belt take-up system, characterized in that, The invention comprises multiple coronary band tension adjustment devices as described in any one of claims 1-9 arranged in parallel, wherein the multiple coronary band tension adjustment devices share a single guide shaft.

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