A wide belt deviation correcting device
Patent Information
- Application Number
- CN202522464555.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-20
AI Technical Summary
In the cigarette label printing production process, wide belts are prone to deviation when running at high speed, which can lead to decreased die-cutting accuracy, paper jams, machine stoppages, or even equipment damage. Existing correction devices are complex in structure, costly, or have slow response, making it difficult to meet the requirements of stability and compactness.
Design a correction mechanism including a fixed base plate, elastic components and guide wheels. The correction force is applied to the wide belt by the reverse elastic force of the elastic components, so that it automatically returns to the correct position, realizing dynamic adaptive correction. The structure is simple and does not require external power.
It achieves rapid and continuous adaptive correction of wide belts, avoiding the wear and high cost problems of traditional devices, improving equipment operation stability and production efficiency, and ensuring the precision of cigarette label die-cutting.
Smart Images
Figure CN224929675U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of printing and packaging machinery technology, and more specifically, to a belt alignment device for a wide conveyor belt in the die-cutting process of cigarette label printing. Background Technology
[0002] In the cigarette label printing production process, the die-cutting process is one of the key steps. To achieve continuous, efficient, and automated operation, cigarette labels are typically transported via wide conveyor belts. However, under high-speed operation, due to factors such as uneven belt tension, roller installation errors, asymmetrical material distribution, or changes in ambient temperature and humidity, the wide conveyor belt is prone to shifting to one side or even swinging repeatedly between the two sides. This shifting not only leads to cigarette label misalignment and reduced die-cutting accuracy, but in severe cases, it can also cause paper jams, machine downtime, or even equipment damage, seriously affecting production efficiency and product quality.
[0003] Currently, common belt alignment methods mainly include mechanical edge-stopping and active alignment mechanisms driven by photoelectric sensors and cylinders. The former has a simple structure but is prone to belt edge wear and cannot achieve dynamic adaptive adjustment; the latter, although it has a certain automatic alignment capability, is complex, costly, and has a slow response, making it difficult to apply to cigarette label printing equipment that requires high stability and compactness. Utility Model Content
[0004] The technical problem to be solved by this application is to provide a belt deviation correction device with a simple structure, rapid response, no need for external energy drive, and the ability to achieve adaptive elastic deviation correction, so as to effectively solve the problem of belt deviation during high-speed conveying and ensure the stable operation of the cigarette label die-cutting process.
[0005] This application provides a belt alignment device, including at least one pair of alignment mechanisms symmetrically arranged on both sides of the belt; The correction mechanism includes a fixed base plate, an elastic component, and guide wheels; The fixed base plate is fixedly installed on the conveyor frame. One end of the elastic component is connected to the fixed base plate, and the other end is rotatably set with the guide wheel, which is in contact with or has a gap with the side edge of the wide belt. When the wide belt deviates from its normal position, the guide pulley on the deviated side is squeezed by the wide belt, and the elastic component generates a reverse elastic force, which applies a corrective force towards the center of the wide belt, so that the wide belt returns to its normal operating position.
[0006] Optionally, the elastic component includes a swing arm rotatably mounted on the fixed base plate, an elastic element connected at one end to the swing arm and at the other end to the fixed base plate, the end of the swing arm away from the elastic element being connected to the guide wheel, the guide wheel being squeezed by a wide belt, causing the swing arm to deflect, and the elastic element generating an elastic force that reacts on the wide belt.
[0007] Optionally, the elastic element is one of a compression spring, a tension spring, or a rubber elastomer.
[0008] Optionally, a limiter is provided on the fixed base plate to limit the extreme position of the swing arm deflection.
[0009] Optionally, the limiting member is an elastomer or its surface is covered with an elastomer.
[0010] Optionally, the guide wheel has a V-shaped annular groove on its circumferential surface that rolls with a wide belt.
[0011] Optionally, a position sensor is provided on the fixed base plate to detect situations where the wide belt is severely misaligned beyond the correction capability of the correction device.
[0012] Optionally, the position sensor is a proximity switch, a photoelectric sensor, or a micro switch.
[0013] Optionally, the correction device for the wide belt further includes a protective cover that is detachably mounted on the fixed base plate and at least covers the elastically deformed portion of the elastic component.
[0014] Optionally, the axis of the guide wheel is arranged perpendicular to the running direction of the wide belt to reduce frictional resistance and enhance the guiding effect.
[0015] The beneficial effects of this application are that by symmetrically arranging a belt-correcting mechanism consisting of a fixed base plate, an elastic component, and guide wheels on both sides of a wide belt, when the belt deviates due to uneven tension or external interference, the guide wheel on the deviated side is squeezed by the belt edge, compressing the elastic component to generate a reverse elastic force. This elastic force acts on the side of the belt through the guide wheel, forming a corrective force pointing towards the center, causing the belt to automatically return to the correct position. Since the guide wheel can rotate freely and the elastic component provides flexible feedback, the entire process requires no external energy and involves no rigid collisions, achieving dynamic, continuous, and adaptive belt correction. The wide belt belt correction device provided by this application has a simple and compact structure, low cost, rapid response, and no lag, effectively avoiding the problems of traditional edge-protected belt wear or complex and expensive electro-electric actuators. While ensuring the die-cutting accuracy of cigarette labels, it significantly improves the stability of equipment operation and production efficiency. Attached Figure Description
[0016] Figure 1 A schematic diagram of the correction mechanism provided in the embodiments of this application; Figure 2 An exploded view of the correction mechanism provided in the embodiments of this application; Figure 3 This is a schematic diagram illustrating the usage state of the correction device provided in the embodiments of this application.
[0017] In the diagram: 100, correction mechanism; 110, fixed base plate; 120, elastic component; 121, swing arm; 122, elastic element; 130, guide wheel; 140, limiting element; 150, position sensor; 160, protective cover. Detailed Implementation
[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0019] like Figure 1-3 As shown, this application provides a belt alignment device, including at least one pair of alignment mechanisms 100 symmetrically arranged on both sides of the belt. Each alignment mechanism 100 includes a fixed base plate 110, an elastic component 120, and a guide wheel 130. The fixed base plate 110 is fixedly installed on the conveyor frame. One end of the elastic component 120 is connected to the fixed base plate 110, and the other end is rotatably arranged with the guide wheel 130, which is in contact with or has a gap with the side edge of the belt. When the belt deviates, the guide wheel 130 on the deviated side is squeezed by the belt, and the elastic component 120 generates a reverse elastic force, which applies an alignment force toward the center of the belt, so that the belt returns to its normal operating position.
[0020] Compared with existing technologies, the wide belt correction device provided in this application, through the symmetrical arrangement of a correction mechanism 100 consisting of a fixed base plate 110, an elastic component 120, and a guide wheel 130 on both sides of the wide belt, when the belt deviates due to uneven tension or external interference, the guide wheel 130 on the deviated side is squeezed by the edge of the belt, compressing the elastic component 120 to generate a reverse elastic force. This elastic force acts on the side of the belt through the guide wheel 130, forming a correction force pointing towards the center, causing the belt to automatically return to the correct position. Since the guide wheel 130 can rotate freely and the elastic component 120 provides flexible feedback, the entire process requires no external energy and involves no rigid collisions, achieving dynamic, continuous, and adaptive correction. The wide belt correction device provided in this application has a simple and compact structure, low cost, rapid response, and no lag, effectively avoiding the problems of traditional edge-protected belt wear or complex and expensive electro-electric actuator systems. While ensuring the die-cutting accuracy of cigarette labels, it significantly improves the operational stability and production efficiency of the equipment.
[0021] It should be noted that the fixed base plate 110 can be made of carbon steel, stainless steel, or high-strength aluminum alloy, which has good rigidity and corrosion resistance. Installation method: It is firmly fixed to the conveyor frame by bolts or welding, located at an appropriate distance outside the side edge of the wide belt (an initial gap of 1-10cm can be reserved).
[0022] It should also be noted that the guide pulley 130 is preferably made of engineering plastics (such as nylon, POM) or a polyurethane-coated metal wheel, with a smooth, wear-resistant surface that does not damage the belt edge. Installation method: It is rotatably mounted on a bracket at the end of the elastic component 120 via bearings, ensuring free rotation with the belt movement and reducing frictional resistance. The outer circumferential surface of the guide pulley 130 makes slight contact with or maintains a small gap (initially) with the side edge of the wide belt, and immediately contacts and is compressed when the belt deviates.
[0023] In one possible implementation, the elastic component 120 includes a swing arm 121 rotatably mounted on a fixed base plate 110, an elastic element 122 connected at one end to the swing arm 121 and at the other end to the fixed base plate 110, the end of the swing arm 121 away from the elastic element 122 being connected to a guide wheel 130, the guide wheel 130 being squeezed by a wide belt, causing the swing arm 121 to deflect, and the elastic element 122 generating an elastic force that reacts to the wide belt.
[0024] Specifically, in the initial state, the elastic element 122 keeps the swing arm 121 in a pre-tensioned position, and the guide wheel 130 is close to but does not press against the edge of the wide belt. When the belt deviates and squeezes the guide wheel 130, the guide wheel 130 drives the swing arm 121 to deflect around the axis of rotation, causing the elastic element 122 to be stretched or compressed to generate a reverse elastic force. This force is transmitted to the guide wheel 130 through the swing arm 121, thereby applying a corrective force towards the center to the side of the belt. After the belt returns to the correct position, the elastic element 122 drives the swing arm 121 to reset, and the guide wheel 130 returns to its initial position, thus realizing an adaptive correction function that is structurally stable, responsive, and requires no external power.
[0025] In one possible implementation, the elastic element 122 is one of a compression spring, a tension spring, or a rubber elastomer.
[0026] Specifically, when a compression spring is used, one end of it abuts against the middle or end of the swing arm 121, and the other end is fixed to the limiting seat on the fixed base plate 110. When the belt deviates, it pushes the guide wheel 130 to rotate the swing arm 121 towards the base plate, and the compression spring is further compressed to generate a counter-thrust force. When a tension spring is used, its two ends are connected to the far end of the swing arm 121 and the rear side of the base plate, respectively. When the swing arm 121 is compressed and swings outward, the tension spring is stretched and provides a correction effect through the recoil force. If a rubber elastomer is used, it is embedded in the hinge area or support point between the swing arm 121 and the base plate, and the elastic restoring force generated by its shear or compression deformation is used to achieve buffering and reset. All three forms can effectively transmit the correction force, have a simple structure, high reliability, and can be flexibly selected according to the actual working conditions, taking into account both response speed and service life.
[0027] In one possible implementation, a limiter 140 is provided on the fixed base plate 110 to limit the extreme position of the swing arm 121 deflection.
[0028] Specifically, the limiting member 140 can be a limiting screw, a stop, or a shaped boss, which is arranged on one or both sides of the rotation path of the swing arm 121. When the wide belt deviates severely, causing the swing arm 121 to deflect excessively, the limiting member 140 contacts the swing arm 121 to prevent it from continuing to rotate, thereby preventing the elastic member 122 from failing due to overload, the guide wheel 130 from being damaged due to excessive force, or the structure of the swing arm 121 from deforming.
[0029] In one possible implementation, the limiting member 140 is an elastomer or its surface is covered with an elastomer.
[0030] Specifically, the limiting component 140 is made of an elastomer material, or a layer of elastomer (such as polyurethane, rubber, etc.) is wrapped around its rigid body (such as metal screws, blocks). When the swing arm 121 deflects to the limit position due to severe belt misalignment and comes into contact with the limiting component 140, the elastomer absorbs the impact energy through its own deformation, avoiding vibration, noise or structural damage caused by rigid collision. At the same time, the buffer reaction force provided by the elastomer can further assist in the correction, making the belt return process smoother and gentler. This not only protects the swing arm 121, guide wheel 130 and belt edge, but also improves the durability and operational stability of the entire correction device under high-frequency dynamic conditions.
[0031] In one possible implementation, the circumferential surface of the guide wheel 130 is provided with a V-shaped annular groove that rolls with a wide belt.
[0032] Specifically, the inclined surfaces on both sides of the V-groove can provide slight guidance and constraint to the edge of the belt. When the belt deviates slightly, it generates an automatic self-correcting force through contact with the groove wall, enhancing the correction sensitivity. At the same time, the V-shaped structure can effectively prevent axial slippage or slippage between the guide wheel 130 and the belt, ensuring stable contact, smooth rolling, and reducing local wear.
[0033] In one possible implementation, a position sensor 150 is provided on the fixed base plate 110 to sense situations where the wide belt is severely misaligned beyond the correction capability of the correction device.
[0034] Specifically, when the wide belt deviates severely, exceeding the normal correction range and triggering the position sensor 150, the position sensor 150 immediately outputs an alarm signal or a stop command to the control system. This design can provide timely warnings or trigger equipment deceleration / stop when the correction device itself is insufficient to correct the deviation, effectively avoiding faults such as paper jams, belt tears, or die-cutting misalignment caused by continuous deviation, thereby improving the safety and intelligence level of the entire machine operation.
[0035] In one possible implementation, the position sensor 150 is a proximity switch, a photoelectric sensor, or a micro switch.
[0036] In one possible implementation, the wide belt correction device also includes a protective cover 160 that is detachably mounted on the fixed base plate 110 and at least covers the elastically deformed portion of the elastic component 120.
[0037] Specifically, the protective cover 160 is used to isolate the elastic component 120 from common paper scraps, dust, oil mist and moisture in the printing workshop environment; the protective cover 160 is usually made of transparent engineering plastic or thin-walled metal, which makes it easy to observe the internal condition, and can be quickly installed and removed by buckles, screws or magnetic structures, which facilitates maintenance and replacement.
[0038] In one possible implementation, the axis of the guide wheel 130 is arranged perpendicular to the running direction of the wide belt to reduce frictional resistance and enhance the guiding effect.
[0039] Specifically, the rotation plane of the guide wheel 130 is parallel to the direction of belt movement, so that the side edge of the belt only generates rolling friction rather than sliding friction when it contacts the guide wheel 130, which significantly reduces running resistance and avoids edge wear. At the same time, the vertically arranged guide wheel 130 can apply lateral correction force to the side of the belt more directly and stably, improve the accuracy and immediacy of the guiding response, and effectively prevent force decomposition loss or vibration caused by angular deviation. Thus, while ensuring the smoothness of high-speed conveying, the overall guiding effect and operational reliability of the correction device are further enhanced.
[0040] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.
[0041] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.
Claims
1. A belt alignment device for a wide-width belt, characterized in that, Includes at least one pair of correction mechanisms (100) symmetrically arranged on both sides of the wide belt. The correction mechanism (100) includes a fixed base plate (110), an elastic component (120), and a guide wheel (130). The fixed base plate (110) is fixedly installed on the conveyor frame. One end of the elastic component (120) is connected to the fixed base plate (110), and the other end is rotatably provided with the guide wheel (130), which is in contact with or has a gap with the side edge of the wide belt. When the wide belt deviates, the guide wheel (130) on the deviated side is squeezed by the wide belt, and the elastic component (120) generates a reverse elastic force, which applies a corrective force towards the center of the wide belt, so that the wide belt returns to the normal operating position.
2. The belt alignment device according to claim 1, characterized in that, The elastic component (120) includes a swing arm (121) rotatably mounted on the fixed base plate (110) and an elastic element (122) connected at one end to the swing arm (121) and at the other end to the fixed base plate (110). The end of the swing arm (121) away from the elastic element (122) is connected to the guide wheel (130). The guide wheel (130) is squeezed by a wide belt, causing the swing arm (121) to deflect, and the elastic element (122) generates an elastic force that reacts to the wide belt.
3. The belt alignment device according to claim 2, characterized in that, The elastic element (122) is one of a compression spring, a tension spring, or a rubber elastomer.
4. The belt alignment device according to claim 2, characterized in that, The fixed base plate (110) is provided with a limiting member (140) to limit the extreme position of the swing arm (121) deflection.
5. The belt alignment device according to claim 4, characterized in that, The limiting member (140) is an elastomer or its surface is covered with an elastomer.
6. The belt alignment device according to claim 1, characterized in that, The guide wheel (130) has a V-shaped annular groove on its circumference that is designed to roll with a wide belt.
7. The belt alignment device according to claim 1, characterized in that, A position sensor (150) is provided on the fixed base plate (110) to sense situations where the wide belt is seriously misaligned and exceeds the correction capability of the correction device.
8. The belt alignment device according to claim 7, characterized in that, The position sensor (150) is a proximity switch, photoelectric sensor or micro switch.
9. The belt alignment device according to any one of claims 1-8, characterized in that, It also includes a protective cover (160) that is detachably mounted on the fixed base plate (110) and at least covers the elastically deformed portion of the elastic component (120).
10. The belt alignment device according to any one of claims 1-8, characterized in that, The axis of the guide wheel (130) is arranged perpendicular to the running direction of the wide belt to reduce frictional resistance and enhance the guiding effect.