Path correction system for films

Abstract

A web correction system for films, including: a first guide element comprising a first suction guide belt and a first horizontal movement element, wherein the first horizontal movement element serves to move the first suction guide belt in a horizontal plane; a second guide element comprising a second suction guide belt and a second horizontal movement element, wherein the second horizontal movement element serves to move the second suction guide belt in a horizontal plane and the first suction guide belt and the second suction guide belt form a film transport channel to guide a film so that it is successively guided through the first guide element and the second guide element; at least one sensor used to detect the position of the film and output a corresponding position signal; and a control unit which is connected via signal technology to the at least one sensor, the first suction guide belt, the first horizontal movement element, the second suction guide belt and the second horizontal movement element; wherein, after the control unit has received the position signal, it controls the suction state of the first suction guide belt and the second suction guide belt as well as the first horizontal movement element and the second horizontal movement element in order to adjust the relative position of the first suction guide belt and the second suction guide belt and thereby effect a web correction with respect to the position of the film.

Description

Field of invention

[0001] The present invention relates to a web correction system and in particular a web correction system for films for multi-stage continuous web correction. State of the art

[0002] Film-like materials are a very common and widely used object in industrial manufacturing processes. For example, they serve as the main component of a primary product, such as various composite films, or as a protective layer, such as a scratch-resistant protective film for mirror surfaces. Alternatively, they can also be used as a reinforcing material in a manufacturing process, for example, as a reinforcing material on the outer surface of a current collector layer in batteries. However, in the aforementioned industrial manufacturing processes, there is one particularly crucial factor influencing the use of film-like materials: the positional deviation between the object to be laminated and the film-like material during the lamination process.Generally, film-like materials are stored in rolls to facilitate transport and storage. However, when a film is unwound from a roll by a machine, it can drift. Therefore, it is necessary to use a web correction device before the film enters the subsequent production process to readjust the drifting film and thus ensure the material's positional accuracy. If such web correction is not performed beforehand, drifting film during the production process can lead to inaccurate cutting operations, resulting in, for example, skewed dimensions or incorrect sizes. This ultimately leads to poor product quality or reduced yield.

[0003] Currently, conventional methods for correcting film position deviations can be essentially divided into two types: a web correction device and an edge guide device. Regardless of which of these devices is used, there are certain prerequisites for its operation. First, the film on the device's rollers must have sufficient web tension to be kept taut. Furthermore, the film must have sufficient tensile strength to withstand this tension; otherwise, effective web correction cannot be achieved. For example, if the film's position deviates to the left, the web correction device adjusts the roller angle, thereby increasing the tension on the left side of the film.Due to the increased tension on the left side, the film, being subjected to greater tensile force there, is moved to the right and thus realigned to the center position. During this web correction process, the rollers of the web correction device are gradually returned to their original position in accordance with the film's change in position.

[0004] If the tensile strength of the film is sufficiently high, an advantage of the aforementioned procedure is that the film is corrected using a step-by-step process, resulting in a relatively small overall stress difference in that section and less impact on the film's appearance. However, a disadvantage is that this step-by-step process can make the web correction relatively time-consuming and result in relatively high material consumption. Furthermore, these web correction devices completely lose their ability to correct the film's position if the film deviates significantly or is even in a tension-free state.

[0005] The task is therefore to provide a web correction device for films that does not impair the flatness of the film while enabling efficient web correction. Technical solution

[0006] Against this background, the present invention provides a web correction system for films comprising a first guide element, a second guide element, at least one sensor, and a control unit, wherein the first guide element has a first suction guide belt and a first horizontal movement element, the first horizontal movement element being used to move the first suction guide belt in a horizontal plane, the second guide element having a second suction guide belt and a second horizontal movement element, the second horizontal movement element being used to move the second suction guide belt in a horizontal plane, the first suction guide belt and the second suction guide belt forming a film transport channel to guide a film so that it is successively guided through the first guide element and the second guide element, and the sensor being used toThe control unit detects the position of the film and outputs a corresponding position signal. The control unit is connected to the sensor, the first suction guide belt, the first horizontal movement element, the second suction guide belt, and the second horizontal movement element via signal transmission. After receiving the position signal, the control unit adjusts the suction state of the first and second suction guide belts, as well as the first and second horizontal movement elements, to set their relative positions and thereby correct the film's position.

[0007] The first suction guide belt comprises a first drive roller assembly and a first conveyor belt, wherein the first conveyor belt is guided over the first drive roller assembly and driven by it. The second suction guide belt comprises a second drive roller assembly and a second conveyor belt, wherein the second conveyor belt is guided over the second drive roller assembly and driven by it.

[0008] The first suction guide belt further comprises a first film suction box, wherein the first conveyor belt has several first air holes. The second suction guide belt comprises a second film suction box, wherein the second conveyor belt has several second air holes. The first and second film suction boxes are connected to the control unit via signaling to control the suction force of the first film suction box on the film via the first air holes and the suction force of the second film suction box on the film via the second air holes.

[0009] The first guide element further comprises a first frame, wherein the first frame accommodates the first suction guide band and has a first inlet and a first outlet. The second guide element further comprises a second frame, wherein the second frame accommodates the second suction guide band and has a second inlet and a second outlet. This guides the film successively through the first inlet, the first outlet, the second inlet, and the second outlet, guiding it through the first suction guide band and the second suction guide band.

[0010] The first suction box also includes a first angle adjustment unit, which is connected to the control unit via a signal connection. The control unit receives the position signal output by the sensor and controls the first angle adjustment unit accordingly, so that the first suction box is tilted by a predetermined angle.

[0011] The second suction box also includes a second angle adjustment unit, which is connected to the control unit via a signal. The control unit receives the position signal output by the sensor and controls the second angle adjustment unit accordingly, so that the second suction box is tilted by a predetermined angle.

[0012] The web correction system for films further comprises a support frame having a first mounting platform and a second mounting platform, wherein the height of the first mounting platform relative to the lower end of the support frame is greater than the height of the second mounting platform relative to the lower end of the support frame, the first guide element is arranged on the first mounting platform and the second guide element is arranged on the second mounting platform.

[0013] In this case, the film transport channel is arranged at an oblique angle to the base of the support frame.

[0014] The first horizontal movement element comprises a first transfer platform and a first inclined support frame, wherein the lower end of the first transfer platform is linearly movably connected to the first assembly platform, the lower end of the first inclined support frame is linearly movably connected to the top of the first transfer platform, and the first suction guide belt is arranged on the inclined surface of the first inclined support frame, wherein the direction of movement of the first transfer platform is perpendicular to the direction of movement of the first inclined support frame.

[0015] The second horizontal movement element comprises a second transfer platform and a second inclined support frame, wherein the lower end of the second transfer platform is linearly movably connected to the second assembly platform, the lower end of the second inclined support frame is linearly movably connected to the top of the second transfer platform, and the second suction guide belt is arranged on the inclined surface of the second inclined support frame, wherein the direction of movement of the second transfer platform is perpendicular to the direction of movement of the second inclined support frame.

[0016] In summary, the web correction system according to the invention can be applied to films exhibiting varying degrees of positional deviations, wherein the film is gradually aligned to the central position by means of a multi-stage, reciprocating web correction process. Furthermore, the web correction system according to the invention uses a vacuum suction method for fixing the film, thereby effectively reducing the risk of tensile stress and deformation of the film during the web correction process, thus ensuring the integrity of the film during the process.Furthermore, when carrying out web correction using the web correction system according to the invention for films, not only can deformation of the film be avoided, but the already corrected area is also not affected, thereby improving the stability and accuracy of the entire web correction process and at the same time increasing the overall production efficiency. Brief description of the drawings Fig. Figure 1 shows a schematic representation of a specific embodiment of the web correction system for films according to the invention; Fig. Figure 2 shows a schematic representation of the web correction system for films according to Fig. 1. From a different perspective; Fig. Figure 3 shows a schematic representation of the web correction system for films according to Fig. 1 during the transport of a film; Fig. Figure 4 shows a schematic representation of the web correction system for films according to Fig. 3. When transporting a film from a different perspective. Detailed description of the exemplary implementations

[0017] To better understand the advantages, nature, and features of the present invention, specific embodiments are described in detail below with reference to the accompanying drawings. It should be noted that these specific embodiments are only representative examples of the present invention. The specific methods, devices, conditions, materials, or the like mentioned therein are not intended to limit the present invention or the corresponding embodiments. Furthermore, it is hereby clarified in advance that the devices shown in the drawings serve only to illustrate their relative positions and are not depicted in their actual proportions.

[0018] In the description of the present invention, reference to terms such as "a specific embodiment," "a further embodiment," or "a part of the embodiments" means that a specific feature, structure, material, or property described in connection with the embodiment is included in at least one embodiment of the present invention. The exemplary use of the aforementioned terms in this description does not necessarily refer to the same embodiment. Furthermore, the described specific features, structures, materials, or properties may be suitably combined in one or more embodiments.

[0019] In the description of the present invention, terms such as "longitudinal," "transverse," "top," "bottom," "front," "back," "left," "right," "top," "bottom," "inside," and "outside" merely denote positional relationships based on the orientations shown in the drawings. These terms serve only to facilitate the description of the present invention and to simplify its presentation, and do not imply that the described devices or elements must have a specific orientation or be designed and operated in a particular orientation. They are therefore not to be understood as limiting the present invention.

[0020] It will be directed to the Fig. 1, Fig. 2, Fig. 3 and Fig. 4 referenced. Fig. Figure 1 shows a schematic representation of a specific embodiment of the web correction system according to the invention for films 1; Fig. Figure 2 shows a schematic representation of the path correction system for slides 1 according to Fig. 1. From a different perspective; Fig. Figure 3 shows a schematic representation of the path correction system for slides 1 according to Fig. 1 during the transport of a film 5; and Fig. Figure 4 shows a schematic representation of the path correction system for slides 1 according to Fig. 3 during the transport of a foil 5 from a different perspective. As in the Fig. 1, Fig. 2, Fig. 3 to Fig. As shown in Figure 4, the web correction system for films 1, according to the present specific embodiment, comprises a first guide element 11, a second guide element 12, a support frame 13, at least one sensor (not shown), and a control unit (not shown). The first guide element 11 and the second guide element 12 are arranged on the support frame 13 and serve to support and transport the film 5. The sensor detects the position of the film 5 and outputs a corresponding position signal. The control unit is connected to the first guide element 11, the second guide element 12, and the sensor via signal transmission.

[0021] In the present specific embodiment, the first guide element 11 comprises a first suction guide belt 111 and a first horizontal motion element 112, wherein the first horizontal motion element 112 can drive the first suction guide belt 111 to movement in a horizontal plane. The first suction guide belt 111 comprises a first drive roller assembly 1111 and a first conveyor belt 1112, wherein the first conveyor belt 1112 is guided over the first drive roller assembly 1111. In practical application, the first drive roller assembly 1111 can comprise a drive element 1115 and at least two drive rollers 1116. The first conveyor belt 1112 can be designed as an endless conveyor belt that is guided over the drive rollers 1116 and is in contact with them. The drive element 1115 can drive the drive rollers 1116 to rotate, so that the drive rollers 1116 can drive the first conveyor belt 1112 to move.

[0022] In the present specific embodiment, the second guide element 12 comprises a second suction guide belt 121 and a second horizontal motion element 122, wherein the second horizontal motion element 122 can drive the second suction guide belt 121 to movement in a horizontal plane. The second suction guide belt 121 comprises a second drive roller assembly 1211 and a second conveyor belt 1212, wherein the second conveyor belt 1212 is guided over the second drive roller assembly 1211. In practical application, the second drive roller assembly 1211 can also comprise a drive element and at least two drive rollers, as mentioned above. The second conveyor belt 1212 can also be designed as an endless conveyor belt that is guided over and in contact with the drive rollers.Similarly, the drive element of the second drive roller assembly 1211 can drive the drive rollers to rotate, so that the drive rollers can drive the second conveyor belt 1212 to move. Furthermore, in practical application, the control unit can be connected via signal to the drive elements of the first drive roller assembly 1111 and the second drive roller assembly 1211 in order to control the movement of the first conveyor belt 1112 and the second conveyor belt 1212.

[0023] In the present specific embodiment, the first guide element 11 comprises a first frame 113, while the second guide element 12 comprises a second frame 123. The first frame 113 has a first receiving chamber 1130 in which the first suction guide belt 111 is received, with a first inlet 1131 and a first outlet 1132 arranged opposite each other at two ends of the first frame 113. The second frame 123 has a second receiving chamber 1230 in which the second suction guide belt 121 is received, with a second inlet 1231 and a second outlet 1232 arranged opposite each other at two ends of the second frame 123. In practical application, the first frame 113 is arranged on the first horizontal movement element 112, while the second frame 123 is arranged on the second horizontal movement element 122.Furthermore, the first guide element 11 and the second guide element 12 are arranged adjacent to each other, with the second inlet 1231 of the second frame 123 corresponding to the first outlet 1132 of the first frame 113. The first inlet 1131, the first suction guide belt 111, the first outlet 1132, the second inlet 1231, the second suction guide belt 121, and the second outlet 1232 together form a film transport channel or film transport path of the web correction system for films 1 according to the invention. In addition, the transport direction of the first conveyor belt 1112 runs from the first inlet 1131 to the first outlet 1132, while the transport direction of the second conveyor belt 1212 runs from the second inlet 1231 to the second outlet 1232.Therefore, the first suction guide belt 111 and the second suction guide belt 121 can guide the film 5 and drive it to movement when the film 5 is passed through the first guide element 11 and the second guide element 12.

[0024] Furthermore, in the present specific embodiment, the first suction guide belt 111 comprises a first film suction box 1113, which is arranged between two drive rollers 1116 of the first drive roller assembly 1111. In this configuration, the first conveyor belt 1112 forms an endless conveyor belt, the two ends of which are guided over the drive rollers 1116, with a central section of the first conveyor belt 1112 bearing against the upper and lower surfaces of the first film suction box 1113. The first conveyor belt 1112 has several first air holes 1114. The second suction guide belt 121 further comprises a second film suction box 1213, which is arranged between two drive rollers of the second drive roller assembly 1211.In this configuration, the second conveyor belt 1212 also forms an endless conveyor belt, the two ends of which are guided over the drive rollers of the second drive roller assembly 1211, with a central section of the second conveyor belt 1212 bearing against the upper and lower surfaces of the second film suction box 1213. The second conveyor belt 1212 has several secondary air holes 1214. The first film suction box 1113 and the second film suction box 1213 are connected to the control unit via a signal system. In practical application, the first conveyor belt 1112 is guided around the first film suction box 1113, while the second conveyor belt 1212 is guided around the second film suction box 1213. The control unit can regulate the vacuum generated by the first film suction box 1113 and the second film suction box 1213.Therefore, when the film 5 is guided through the first guide element 11 and the second guide element 12, the film 5 can be drawn into the surfaces of the first conveyor belt 1112 and the second conveyor belt 1212 via the first air holes 1114 and the second air holes 1214, respectively, to prevent the film from warping due to tensile stress. It should be noted that the suction force of the first film suction box 1113 and the second film suction box 1213 is less than the force with which the first conveyor belt 1112 and the second conveyor belt 1212 move the film 5. In other words, the function of the first film suction box 1113 and the second film suction box 1213 is to lightly apply the film 5 to the first conveyor belt 1112 and the second conveyor belt 1212 to facilitate movement without fixing the film 5 firmly to the first conveyor belt 1112 and the second conveyor belt 1212.

[0025] In the present specific embodiment, the first film suction box 1113 further comprises a first angle adjustment unit 1118, while the second film suction box 1213 further comprises a second angle adjustment unit 1218. The first angle adjustment unit 1118 and the second angle adjustment unit 1218 are connected to the control unit via signal transmission. In practical application, the control unit can actuate the first angle adjustment unit 1118 to tilt the first film suction box 1113, whereby the first film suction box 1113 can tilt the first suction guide belt 111 by a specific angle. Likewise, the control unit can actuate the second angle adjustment unit 1218 to tilt the second film suction box 1213, whereby the second film suction box 1213 can tilt the second suction guide belt 121 by a specific angle.This ensures that the film 5 and the first suction guide belt 111 and the second suction guide belt 121 maintain a suitable contact angle, so that the film 5 assumes a flatter position and the occurrence of deviations or wrinkles is prevented.

[0026] In the present specific embodiment, the support frame 13 comprises a first mounting platform 131 and a second mounting platform 132, wherein the height of the first mounting platform 131 relative to the lower end of the support frame 13 is greater than the height of the second mounting platform 132 relative to the lower end of the support frame 13. In practical application, the support frame 13 is designed as a stepped structure. The first guide element 11 is arranged on the first mounting platform 131, while the second guide element 12 is arranged on the second mounting platform 132.

[0027] In the present specific embodiment, the first horizontal motion element 112 comprises a first transfer platform 1121 and a first inclined support frame 1122. The lower end of the first transfer platform 1121 is linearly movably connected to the first assembly platform 131, while the lower end of the first inclined support frame 1122 is linearly movably connected to the upper surface of the first transfer platform 1121. The first inclined support frame 1122 has an inclined surface, with the first suction guide belt 111 arranged on the inclined surface. In practical application, an X-axis slide rail 141 can be installed at the lower end of the first transfer platform 1121, so that the first transfer platform 1121 is movably connected to the first assembly platform 131.A Y-axis slide rail 142 can also be installed at the lower end of the first inclined support frame 1122, so that the first inclined support frame 1122 and the first suction guide belt 111 arranged on it are movably connected to the first transfer platform 1121. Thus, the first guide element 11 can be moved along both the X-axis and the Y-axis by means of the first horizontal movement element 112. Furthermore, the X-axis slide rail 141 and the Y-axis slide rail 142 can be electrically connected to an electric cylinder 143. The control unit can be connected to the electric cylinder 143 via a signal and control the electric cylinder 143 to move the first guide element 11.

[0028] In the present specific embodiment, the second horizontal movement element 122 comprises a second transfer platform 1221 and a second inclined support frame 1222. The lower end of the second transfer platform 1221 is linearly movably connected to the second assembly platform 132, while the lower end of the second inclined support frame 1222 is linearly movably connected to the upper surface of the second transfer platform 1221. The second inclined support frame 1222 has an inclined surface, on which the second suction guide belt 121 is arranged. In practical application, an X-axis slide rail 141 can also be installed at the lower end of the second transfer platform 1221, so that the second transfer platform 1221 is movably connected to the second assembly platform 132.A Y-axis slide rail 142 can also be installed at the lower end of the second inclined support frame 1222, so that the second inclined support frame 1222 and the second suction guide belt 121 arranged on it are movably connected to the second transfer platform 1221. Thus, the second guide element 12 can be moved along the X-axis and the Y-axis by means of the second horizontal movement element 122. Likewise, the X-axis slide rail 141 and the Y-axis slide rail 142 can be electrically connected to the electric cylinder 143. The control unit can be signal-connected to the electric cylinder 143 and control the electric cylinder 143 to move the second guide element 12.

[0029] In the present embodiment, a sensor is arranged above the first guide element 11 and the second guide element 12 and is connected to the control unit via a signal connection to detect the position of the film 5 and transmit the signal of the detected position to the control unit in real time. For example, if the sensor detects that the film 5 deviates from the center line, the sensor generates a position signal of the film 5 and transmits this to the control unit. When the control unit receives the signal, it activates the corresponding electric cylinder 143, causing the corresponding guide element to move along the X-axis and / or the Y-axis to readjust the position of the deviating film 5.In a specific embodiment, the first guide element and the second guide element can each include several sensors, which can be arranged in several different positions and angles to detect the position of the film and output a position signal. The control unit can further adjust and readjust the position of the film via at least one of the previously described horizontal movement elements, the film suction boxes, and the angle adjustment units.

[0030] In practical application, if the film 5 deviates only slightly, the path correction can be achieved with a single adjustment. For example, assume that the total travel distance controllable by the electric cylinder 143 is 80 mm (that is, a movement of 40 mm to the left and right along the X-axis is possible). If, in the path correction process, the second guide element 12 is used first to perform the path correction, at this point only one of the drive rollers 1116 of the first conveyor belt 1112 comes into contact with the film 5 at the first guide element 11 (see Fig.4) When the sensor detects that the film 5 deviates 30 mm to the left of the center line, it transmits the detected signal to the control unit. The control unit then activates the electric cylinder 143, causing the second guide element 12 to move in the opposite direction (i.e., to the right) to correct the path. During the path correction process, the film 5 is drawn into the second guide element 12, while simultaneously the electric cylinder 143 moves the second guide element 12 along the X-axis slide rail 141. After the second guide element 12 has moved 30 mm to the right, the film 5 is aligned with the center line again. At this point, the sensor detects the position of the film 5 once more and confirms that it is aligned with the center line.The control unit then further adjusts the first guide element 11 by adjusting the tilt angle of the first film suction box 1113 via the first angle adjustment unit 1118. Simultaneously, the first guide element 11 is moved along the Y-axis slide rail 142 by the electric cylinder 143, enabling the first guide element 11 to seamlessly take over the film 5. After the first suction guide belt 111 of the first guide element 11 has completely drawn in the film 5, the control unit then adjusts the second angle adjustment unit 1218 of the second guide element 12, tilting the second suction guide belt 121 of the second guide element 12 so that only one of the drive rollers is in contact with the film 5 and draws it in.This ensures that the corrected sheet 5, after being transferred to the first guide element 11, is no longer influenced by the second guide element 12, thus preventing any additional deviation. Furthermore, to guarantee a smooth transition of the sheet 5 during the web correction and transport process, and to reduce stress changes, the dimensions of the second guide element 12 are smaller than those of the first guide element 11.

[0031] If the deviation of film 5 is relatively large, the web correction must be performed section by section. For example, if the sensor detects that the position of film 5 deviates from the centerline by 70 mm, meaning the deviation is more than half of the total travel of the electric cylinder 143 (80 mm), film 5 cannot be completely corrected in a single step by just one of the guide elements. Therefore, the web correction process must be carried out by an alternating action of the first guide element 11 and the second guide element 12. The control unit first drives a first group of guide elements (for example, the second guide element 12) such that the second guide element 12 is moved by the electric cylinder 143 by 40 mm towards the centerline (i.e., by the maximum possible travel of the electric cylinder 143), thereby initially reducing the deviation of film 5 to 30 mm.After the second guide element 12 has completed the first partial correction, the control unit synchronously activates the next group of guide elements (for example, the first guide element 11) to perform the further path correction. The first angle adjustment unit 1118 is adjusted to change the inclination angle of the first suction guide belt 111, whereby the first guide element 11 is moved along the Y-axis slide rail 142 into a suitable position to continue the path correction of the film 5. At this point, the sensor again detects the position of the film 5. After confirming that the remaining deviation is 30 mm, the control unit activates the electric cylinder 143 so that the first guide element 11 is moved a further 30 mm to return the film 5 completely to the center position.

[0032] If the deviation of film 5 is even greater, for example, if it deviates from the centerline by 100 mm, the web correction must be carried out section by section by the first guide element 11 and the second guide element 12. The control unit first drives a first group of guide elements (for example, the second guide element 12) and, by means of the electric cylinder 143, moves the second guide element 12 by 40 mm towards the centerline so that the deviation of film 5 is reduced to 60 mm. After the second guide element 12 has completed the first partial correction, a second group of guide elements (for example, the first guide element 11) performs a further web correction of 40 mm, so that the deviation is reduced to 20 mm.The control unit then drives the first group of guide elements again to perform a final adjustment and readjust the remaining deviation of 20 mm, so that the film is completely aligned to the central position. Therefore, even if the deviation of the film 5 exceeds the entire travel of the electric cylinder 143, the film can still be correctly realigned by means of a multi-stage back-and-forth correction. Furthermore, when performing the web correction using the web correction system for films according to the invention, neither the film is deformed nor is the already corrected section of the film affected, thus ensuring the overall stability and precision of the web correction process. It should also be noted that in the embodiment described above, the second guide element 12 is used as the first group of film fixing elements.However, with regard to the transport direction of the film, the sequence is not limited to this; rather, the first guide element 11 can also be used as the first group of film fixing elements.

[0033] In summary, the web correction system according to the invention can be applied to films exhibiting varying degrees of positional deviations, wherein the film is gradually aligned to the central position by means of a multi-stage, reciprocating web correction process. Furthermore, the web correction system according to the invention uses a vacuum suction method for fixing the film, thereby effectively reducing the risk of tensile stress and deformation of the film during the web correction process, thus ensuring the integrity of the film during the process.Furthermore, when carrying out web correction using the web correction system according to the invention for films, not only can deformation of the film be avoided, but the already corrected area is also not affected, thereby improving the stability and accuracy of the entire web correction process and at the same time increasing the overall production efficiency.

[0034] In summary, the present invention comprises a web correction system for films, comprising a first guide element with a first suction guide belt and a first horizontal movement element, a second guide element with a second suction guide belt and a second horizontal movement element, at least one sensor, and a control unit. The first suction guide belt and the second suction guide belt form a film transport channel through which a film is guided, such that it passes successively through the first guide element and the second guide element.After the control unit has received a position signal of the film detected and output by the sensor, it controls the suction state of the first suction guide belt and the second suction guide belt as well as the first horizontal movement element and the second horizontal movement element in order to adjust the relative position of the first suction guide belt and the second suction guide belt and thereby effect a web correction with respect to the position of the film.

[0035] The foregoing detailed description of the preferred specific embodiment serves to illustrate the feature and spirit of the present invention more clearly. However, it does not serve to limit the scope of protection of the present invention. Rather, it is intended to include all modifications and equivalent arrangements that fall within the scope of protection of the claims of the present invention. Therefore, the scope of protection of the present invention, as described above, is to be interpreted in its broadest possible sense, so that all possible modifications and equivalent arrangements are included. Reference symbol list 1. Path correction system for films 11 first guide element 111 first suction guide belt 1111 first drive roller assembly 1112 first conveyor belt 1113 first foil suction box 1114 first air hole 1115 Drive element 1116 Drive roller 1118 first angle adjustment unit 112 first horizontal movement element 1121 first handover platform 1122 first inclined support frame 113 first frame 1130 first recording room 1131 first admission 1132 first outlet 12 second guide element 121 second suction guide belt 1211 second drive roller assembly 1212 second conveyor belt 1213 second foil suction box 1214 second air hole 1218 second angle adjustment unit 122 second horizontal movement element 1221 second transfer platform 1222 second inclined support frame 123 second frame 1230 second recording room 1231 second entrance 1232 second outlet 13 support frames 131 first assembly platform 132 second assembly platform 141 X-axis slide rail 142 Y-axis slide rail 143 electric cylinders Slide 5

Claims

A web correction system for films, comprising: a first guide element comprising a first suction guide belt and a first horizontal movement element, wherein the first horizontal movement element serves to move the first suction guide belt in a horizontal plane; a second guide element comprising a second suction guide belt and a second horizontal movement element, wherein the second horizontal movement element serves to move the second suction guide belt in a horizontal plane, and the first suction guide belt and the second suction guide belt form a film transport channel to guide a film so that it is successively passed through the first guide element and the second guide element; at least one sensor serving to detect the position of the film and accordingly output a position signal;and a control unit which is connected by signal technology to the at least one sensor, the first suction guide belt, the first horizontal movement element, the second suction guide belt and the second horizontal movement element; wherein, after the control unit has received the position signal, it controls the suction state of the first suction guide belt and the second suction guide belt as well as the first horizontal movement element and the second horizontal movement element in order to adjust the relative position of the first suction guide belt and the second suction guide belt and thereby effect a web correction with respect to the position of the film.; Web correction system for films according to claim 1, wherein the first suction guide belt comprises a first drive roller assembly and a first conveyor belt and the first conveyor belt is guided over the first drive roller assembly and is driven to movement by it, wherein the second suction guide belt comprises a second drive roller assembly and a second conveyor belt and the second conveyor belt is guided over the second drive roller assembly and is driven to movement by it. Web correction system for films according to claim 2, wherein the first suction guide belt further comprises a first film suction box, wherein the first conveyor belt has several first air holes, wherein the second suction guide belt comprises a second film suction box, wherein the second conveyor belt has several second air holes, wherein the first film suction box and the second film suction box are connected to the control unit via signaling in order to control the suction force of the first film suction box on the film via the first air holes and to control the suction force of the second film suction box on the film via the second air holes. Web correction system for films according to claim 1, wherein the first guide element further comprises a first frame and the first frame accommodates the first suction guide belt and has a first inlet and a first outlet, wherein the second guide element further comprises a second frame and the second frame accommodates the second suction guide belt and has a second inlet and a second outlet, whereby the film is successively guided through the first inlet, the first outlet, the second inlet and the second outlet and is guided through the first suction guide belt and the second suction guide belt. Web correction system for films according to claim 3, wherein the first film suction box further comprises a first angle adjustment unit which is connected to the control unit via a signal, wherein the control unit receives the position signal output by at least one sensor and accordingly controls the first angle adjustment unit, so that the first film suction box is inclined by a predetermined angle. Web correction system for films according to claim 3, wherein the second film suction box further comprises a second angle adjustment unit which is connected to the control unit via a signal, wherein the control unit receives the position signal output by at least one sensor and accordingly controls the second angle adjustment unit, so that the second film suction box is inclined by a predetermined angle. Web correction system for films according to claim 1, further comprising a support frame having a first mounting platform and a second mounting platform, wherein the height of the first mounting platform relative to the lower end of the support frame is greater than the height of the second mounting platform relative to the lower end of the support frame, the first guide element is arranged on the first mounting platform and the second guide element is arranged on the second mounting platform. Web correction system for films according to claim 7, wherein the film transport channel is arranged at an oblique angle to the bottom surface of the support frame. Web correction system for films according to claim 7, wherein the first horizontal movement element comprises: a first transfer platform, the lower end of which is linearly movably connected to the first mounting platform; and a first inclined support frame, the lower end of which is linearly movably connected to the top of the first transfer platform, wherein the first suction guide belt is arranged on the inclined surface of the first inclined support frame; wherein the direction of movement of the first transfer platform is perpendicular to the direction of movement of the first inclined support frame. Web correction system for films according to claim 7, wherein the second horizontal movement element comprises: a second transfer platform, the lower end of which is linearly movably connected to the second mounting platform; and a second inclined support frame, the lower end of which is linearly movably connected to the top of the second transfer platform, wherein the second suction guide belt is arranged on the inclined surface of the second inclined support frame; wherein the direction of movement of the second transfer platform is perpendicular to the direction of movement of the second inclined support frame.

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