Original film deviation rectifying structure and air cushion machine

Abstract

The utility model discloses an original film deviation rectifying structure and an air cushion machine, the original film deviation rectifying structure comprises a detection device, a control device, a bearing roller and a driving device, the edge of an original film can pass through a detection area of the detection device, a push ring is sleeved on the bearing roller, and the driving device can drive the push ring to slide on the bearing roller. According to the original film deviation rectifying structure and the air cushion machine, when the detecting device detects that the edge of the original film deviates, the detecting device sends a detected signal to the control device, the control device controls the driving device to work, and the driving device drives the push ring on the bearing roller to slide on the bearing roller and drives the rolled original film to move on the bearing roller; and the detection device is matched with the driving device, so that the edge of the original film returns to the normal inflation heat sealing position, the probability that the original film is separated from the normal inflation heat sealing position is reduced, the running stability of equipment is improved, and the defective rate of air bubble film forming is reduced.

Description

Technical Field

[0001] The utility model relates to the field of air cushion machines, in particular to an original film deviation correction structure and an air cushion machine. Background Art

[0002] Bubble film is a cushioning material that can provide cushioning, protection, shock resistance and collision prevention. It is generally used in logistics express boxes to fill the empty space in the logistics express boxes to provide cushioning and protection for the items in the logistics express boxes. The air cushion machine is one of the equipment used to produce bubble film.

[0003] The air cushion machine forms a three-dimensional bubble film product by inflating the original film with an opening and heat-sealing the inflation port of the original film. The air cushion machine generally includes a pair of driven rollers, an inflation nozzle connected to an air supply device, and an original film carrying roller. A rolled original film is sleeved on the original film carrying roller, and the original film is pulled and transported by the rollers. During the traction process, the inflation nozzle fills gas into the original film. One of the pair of rollers is a heating wheel with a heating effect, which inflates the original film and then heat-seals it.

[0004] During the transmission process of the original film, due to tension and film elasticity and other reasons, there is a possibility of lateral deviation of the original film. If the original film moves laterally away from the inflation nozzle, the inflation effect will be reduced or even detach from the inflation nozzle. In addition, when the heating wheel seals the original film, if the deviation is too much, the heating wheel will not be able to seal the original film, resulting in failure of bubble film formation, resulting in waste of materials and greatly reduced efficiency, and unstable production process. Utility Model Content

[0005] The purpose of the utility model is to provide an original film deviation correction structure and an air cushion machine to solve at least one of the above technical problems.

[0006] According to one aspect of the utility model, there is provided an original film deviation correction structure, comprising:

[0007] A detection device for detecting whether the original film is offset, wherein the edge of the original film can pass through the detection area of ​​the detection device;

[0008] The control device, the detection device is electrically connected to the control device;

[0009] The bearing roller is used to bear the rolled original film, and a push ring is provided on the bearing roller.

[0010] When the roll of original film is carried on the carrying roller, the end of the push ring can be against the end of the roll of original film or the inner tube of the roll of original film can be sleeved on the push ring;

[0011] The driving device can drive the push ring to slide on the bearing roller, and the control device is electrically connected to the driving device.

[0012] The utility model discloses an original film deviation correction structure, a detection device and a carrying roller are both installed on the air cushion machine, the detection device is located on the conveying path of the original film between the carrying roller and the inflation nozzle of the air cushion machine, the carrying roller carries the rolled original film, the edge of the original film passes through the detection area of ​​the detection device and is pulled and conveyed to the inflation nozzle of the air cushion machine for inflation, during the pulling and conveying process, the detection device can detect in real time whether the edge of the original film is offset, when the detection device detects that the edge of the original film is offset, the detection device sends the detected signal to the control device, the control device controls the driving device to work, the driving device drives the push ring on the carrying roller to slide on the carrying roller, drives the rolled original film to move on the carrying roller, so that the original film sent out by the rolled original film returns to the normal inflation and heat sealing position, the edge of the original film is corrected, the detection device cooperates with the driving device, so that the edge of the original film returns to the normal inflation and heat sealing position, the probability of the original film being separated from the normal inflation and heat sealing position is reduced, the stability of the equipment operation is improved, and the defective rate of bubble film forming is reduced.

[0013] In some embodiments, the detection device can be a photoelectric detector, and the number of photoelectric detectors is at least one, and the edge of the original film can pass between the transmitting end and the receiving end of the photoelectric detector. Therefore, when the edge of the original film passes through the detection area between the transmitting end and the receiving end of the photoelectric detector, the transmitting end and the receiving end of the photoelectric detector can detect the change in light transmittance between the two. When the edge of the original film is offset, the photoelectric detector sends the detected signal to the control device, and the control device controls the driving device to work. The driving device drives the push ring on the bearing roller to slide on the bearing roller, and the push ring pushes the rolled original film to move on the bearing roller (such as the inner cylinder of the rolled original film is sleeved on the push ring), so that the original film sent out by the rolled original film returns to the normal inflation and heat sealing position.

[0014] In some embodiments, the detection device may be a pair of photoelectric detectors, and the number of the pair of photoelectric detectors may be three. The transmitting ends of the three pair of photoelectric detectors are staggered along a direction perpendicular to the conveying direction of the original film, and the receiving ends of the three pair of photoelectric detectors are staggered along a direction perpendicular to the conveying direction of the original film, so that the edge of the original film can pass between the transmitting end and the receiving end of the pair of photoelectric detectors. Thus, when the edge of the original film is located exactly at the central detection position of the pair of photoelectric detectors in the middle of the three pair of photoelectric detectors, the edge of the original film is in a normal standard position. If only the outermost pair of photoelectric detectors among the three pair of photoelectric detectors is blocked, this is also the allowable deviation range of the edge of the original film. If the outermost pair of photoelectric detectors among the three pair of photoelectric detectors is blocked and half of the middle pair of photoelectric detectors is blocked, this is also the allowable deviation range of the edge of the original film. If the outermost pair of photoelectric detectors among the three pair of photoelectric detectors is blocked and the middle pair of photoelectric detectors is blocked, this is also the allowable deviation range of the edge of the original film. If the outermost pair of photoelectric detectors among the three pair of photoelectric detectors is blocked, and the middle pair of photoelectric detectors is blocked, this is also the allowable deviation range of the edge of the original film. If it is completely blocked, the deviation range of the edge of the original film is allowed. If none of the three opposing photoelectrics are blocked, the edge of the original film needs to be corrected. If all three opposing photoelectrics are blocked, it means that the edge of the original film is attached to the air cushion machine. The edge of the original film also needs to be corrected. The light transmittance changes in the detection area of ​​the three opposing photoelectric detections are used to determine the degree of deviation of the original film and compare it with the preset deviation range in the control device. When it exceeds the set range, the drive device pushes the rolled original film on the carrying roller through the push ring to move the edge of the original film back to the set range to ensure the stability of inflation and heat sealing. In addition, the staggered arrangement of the opposing photoelectrics can reduce the size of the circuit board of the detection device.

[0015] In some embodiments, the three transmitting ends of the photoelectric detectors are arranged in a triangle, and the three receiving ends of the photoelectric detectors are arranged in a triangle. Thus, the triangular arrangement can effectively reduce the size of the circuit board of the detection device.

[0016] In some embodiments, a connecting rod may be further included, the driving device is arranged in the bearing roller, the bearing roller is provided with sliding grooves on both sides along the length direction thereof, the connecting rod is arranged in the bearing roller, the two ends of the connecting rod respectively pass through the sliding grooves and are fixed on the push ring, and the driving device can drive the connecting rod to move back and forth along the sliding grooves. Therefore, when the edge of the original film needs to be corrected, the driving device drives the connecting rod to slide along the sliding grooves on both sides of the bearing roller, the connecting rod drives the push ring to slide on the bearing roller, and the push ring can push the rolled original film to move on the bearing roller (such as the inner cylinder of the rolled original film is sleeved on the push ring), so that the original film delivered by the rolled original film returns to the normal inflation heat sealing position.

[0017] In some embodiments, the carrying roller may be inclined so that the rolled original film carried on the carrying roller maintains a tendency to slide toward the push ring. When the edge of the original film is away from the air cushion machine to achieve the deviation correction, the driving device drives the push ring to move in the direction away from the rolled original film through the connecting rod. Since the carrying roller is inclined, the rolled original film on the carrying roller slides toward the push ring under the action of gravity, thereby making the original film sent out by the rolled original film return to the normal inflation and heat sealing position. The inclined setting of the carrying roller can make the inner cylinder of the rolled original film do not need to be sleeved on the push ring, as long as the end of the rolled original film is against the push ring, which is convenient for the installation and disassembly of the rolled original film on the carrying roller.

[0018] In some embodiments, a screw rod may be further included, and the driving device is a motor, the driving device drives the screw rod to rotate, and a screw hole is provided on the connecting rod, and the screw rod is rotated in the screw hole. Therefore, when the edge of the original film needs to be corrected, the driving device drives the screw rod to rotate, and the rotating screw rod drives the connecting rod to move, and the connecting rod slides along the sliding grooves on both sides of the bearing roller, and the connecting rod drives the push ring to slide on the bearing roller, and the push ring can push the rolled original film to move on the bearing roller, so that the original film delivered by the rolled original film returns to the normal inflation heat sealing position.

[0019] According to another aspect of the utility model, an air cushion machine is also provided, including an air cushion machine body and an original film correction structure, the detection device and the supporting roller are both arranged on the air cushion machine body, and the detection device is located on the conveying path of the original film between the supporting roller and the inflation nozzle of the air cushion machine body.

[0020] The air cushion machine of the utility model carries a rolled original film on a carrying roller, and the edge of the original film passes through a detection area of ​​a detection device and is pulled and transported to the inflation nozzle of the air cushion machine for inflation. During the pulling and transporting process, the detection device can detect in real time whether the edge of the original film is offset. When the detection device detects that the edge of the original film is offset, the detection device sends the detected signal to the control device, and the control device controls the driving device to work. The driving device drives the push ring on the carrying roller to slide on the carrying roller, and drives the rolled original film to move on the carrying roller, so that the original film sent out of the rolled original film returns to the normal inflation and heat sealing position, and the edge of the original film is corrected. The detection device in the original film correction structure cooperates with the driving device, so that the edge of the original film returns to the normal inflation and heat sealing position, thereby reducing the probability of the original film deviating from the normal inflation and heat sealing position, improving the stability of the air cushion machine operation, and reducing the defective rate of bubble film forming.

[0021] In some embodiments, a cross bar may be included, the end of which is arranged on the air cushion machine body, and the cross bar is arranged perpendicular to the conveying direction of the original film, and the original film on the carrier roller enters the detection area of ​​the detection device from the bottom of the cross bar. Thus, the cross bar can guide the conveying of the original film and prevent the outermost side of the original film from warping during the conveying process to affect normal inflation and heat sealing.

[0022] In some embodiments, a bracket may be further included, the bracket being arranged on the air cushion machine body, and the detection device being arranged on the bracket. Thus, the bracket can provide installation support for the detection device and can also effectively protect the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of an original film deviation correction structure according to an embodiment of the utility model;

[0024] Figure 2 for Figure 1 A side view of the original film correction structure shown;

[0025] Figure 3 for Figure 1 The schematic diagram of the structure of the original film deviation correction structure after the bearing roller is hidden;

[0026] Figure 4 for Figure 1 The schematic diagram of the split structure of the crossbar, the bracket, the upper mounting seat for mounting the opposing photoelectric device, and the lower mounting seat in the original film deviation correction structure shown;

[0027] Figure 5 for Figure 4 Schematic diagram of the structure after the middle and lower mounting seat hides the upper cover;

[0028] Figure 6 for Figure 1 The schematic diagram of the split structure of the crossbar, the bracket, the upper mounting seat for mounting the opposing photoelectric device, and the lower mounting seat in the original film deviation correction structure shown;

[0029] Figure 7 for Figure 6 Schematic diagram of the structure after the middle upper mounting seat hides the lower cover;

[0030] Figure 8 for Figure 1 The diagram shows the original film deviation correction structure in use after being installed on the air cushion machine. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0033] Figures 1 to 7 The structure of the original film deviation correction structure according to one embodiment of the utility model is schematically shown.

[0034] refer to Figures 1 to 7 , a raw film deviation correction structure, including a detection device, a control device 2, a bearing roller 3 and a driving device 4. In addition, the raw film deviation correction structure can also include a connecting rod 5, a screw rod 6 and a cross rod 20.

[0035] refer to Figure 1 and Figure 2 The carrying roller 3 is used to carry the rolled original film. The edge of the original film sent out of the rolled original film passes through the detection area of ​​the detection device and is pulled and transported to the inflation nozzle of the air cushion machine for inflation.

[0036] The detection device is used to detect whether the original film passing through its detection area is offset; specifically, in this embodiment, the detection device is a through-beam photoelectric sensor, that is, a through-beam photoelectric sensor, referring to Figure 4 and Figure 5 The transmitting end 11 of the opposite photoelectric device is installed in the lower mounting seat 50. The lower mounting seat 50 includes a lower bottom cover 501 and an upper cover body 502. The upper cover body 502 is installed on the lower bottom cover 501. The upper cover body 502 and the lower bottom cover 501 are surrounded by walls to form a space for installing the transmitting end 11 of the opposite photoelectric device and its circuit board. The circuit board of the transmitting end 11 of the opposite photoelectric device is fixed on the lower bottom cover 501. The top of the upper cover body 502 is formed with a first through hole 503, a second through hole 504 and a third through hole 505 with a circular cross section. The first through hole 503, the second through hole 504 and the third through hole 505 on the upper cover body 502 are respectively aligned with the three transmitting ends 11 of the opposite photoelectric device. Figure 6 and Figure 7The receiving end 12 of the opposite photoelectric device is installed in the upper mounting seat 40. The upper mounting seat 40 includes an upper cover 401 and a lower cover body 402. The upper cover 401 is installed on the lower cover body 402. The walls of the upper cover 401 and the lower cover body 402 form a space for installing the receiving end 12 of the opposite photoelectric device and its circuit board. The circuit board of the receiving end 12 of the opposite photoelectric device is fixed to the bottom of the upper cover 401. The bottom of the lower cover body 402 is formed with a fourth through hole 403, a fifth through hole 404 and a sixth through hole 405 with an oblong cross-section. The fourth through hole 403, the fifth through hole 404 and the sixth through hole 405 on the lower cover body 402 are respectively aligned with the midline positions of the three opposite photoelectric receiving ends 12. The fourth through hole 403, the fifth through hole 404 and the sixth through hole 405 are in an oblong shape to facilitate the control device to set the offset range. Figure 4 and Figure 6 The upper mounting seat 40 and the lower mounting seat 50 are fixed together by two connecting bolts 60. At the same time, the end of the upper mounting seat 40 can be fixed to the vertical plate of the air cushion machine (such as Figure 1 In this case, the upper mounting seat 40, the vertical plate of the air cushion machine, and the lower mounting seat 50 form a C-shaped structure, and the edge of the original film passes through the C-shaped structure. In addition, the lower mounting seat 50 can be supported by a bracket (such as Figure 1 and Figure 3 The bracket 30 in the air cushion machine is pulled upward, and the bracket is installed on the vertical plate of the air cushion machine (such as Figure 1 The vertical plate 102 of the air cushion machine in FIG. Figure 1 When the rolled original film carried by the carrying roller 3 is sent out, when the edge of the original film passes through the detection area between the upper mounting seat 40 and the lower mounting seat 50, the transmitting end 11 and the receiving end 12 of the corresponding photoelectric can detect the light transmittance change between the two.

[0037] refer to Figures 4 to 7In this embodiment, the number of the opposing photoelectrics is three, and the transmitting ends 11 of the three opposing photoelectrics are staggered along the direction perpendicular to the conveying direction of the original film, and the receiving ends 12 of the three opposing photoelectrics are staggered along the direction perpendicular to the conveying direction of the original film. The transmitting ends 11 and the receiving ends 12 of the three opposing photoelectrics are respectively arranged one by one. In this way, when the edge of the original film is exactly located at the central detection position of the opposing photoelectric in the middle of the three opposing photoelectrics (the center line of the transmitting end 11 and the receiving end 12 in the conveying direction of the original film), that is, when the edge of the original film is exactly located at the central detection position of the opposing photoelectric corresponding to the second through hole 504 and the fifth through hole 404, the edge of the original film is set to a normal standard position at this time, and no correction is required. If only the outermost opposing photoelectric among the three opposing photoelectrics is blocked, that is, only the opposing photoelectrics corresponding to the third through hole 505 and the sixth through hole 405 are blocked, this is also within the allowable deviation range of the edge of the original film, and no correction is required. To correct the deviation, if the outermost of the three opposing photoelectrics is blocked and half of the middle opposing photoelectric (half the area of ​​the probes at the transmitting end 11 and the receiving end 12) is blocked, then the deviation of the edge of the original film is within the allowable range and no correction is required. If the outermost of the three opposing photoelectrics is blocked and the middle opposing photoelectric is blocked, then the deviation of the edge of the original film is within the allowable range and no correction is required. If the outermost of the three opposing photoelectrics is blocked, the middle opposing photoelectric is blocked and the innermost opposing photoelectric (the opposing photoelectric corresponding to the first through hole 503 and the fourth through hole 403) is not completely blocked, then the deviation of the edge of the original film is within the allowable range and no correction is required. If none of the three opposing photoelectrics are blocked, then the edge of the original film needs to be corrected. If all three opposing photoelectrics are blocked, it means that the edge of the original film is attached to the vertical plate of the air cushion machine (such as Figure 1 The vertical plate 102 of the air cushion machine in the middle is mounted on it. At this time, it is also necessary to correct the edge of the original film. The degree of deviation of the original film can be obtained by the light transmittance change of the detection area through three opposing photoelectric detections. In addition, the staggered arrangement of the three opposing photoelectrics can reduce the size of the circuit board of the detection device.

[0038] refer to Figure 5 and Figure 7In this embodiment, the transmitting ends 11 of the three opposing photoelectric devices are arranged in a triangle, and the receiving ends 12 of the three opposing photoelectric devices are arranged in a triangle. In this way, the size of the circuit board of the detection device can be effectively reduced. In other embodiments, the number of opposing photoelectric devices can also be one, as long as the edge of the original film can be limited to the position of inflation and heat sealing, but the space where the original film is sealed cannot be guaranteed. However, the yield rate of bubble film forming may be unstable, but it can also meet the requirements. The number of opposing photoelectric devices can also be two. Two opposing photoelectric devices can limit the range of the original film deviation, ensure that the edge of the original film can be limited to the vicinity of the optimal position, and can also ensure the yield rate of bubble film forming. The number of opposing photoelectric devices can also be four or more. The more the number of opposing photoelectric devices, the higher the detection accuracy of the original film deviation. In this embodiment, three opposing photoelectric devices can ensure the inflation rate and heat sealing rate of the original film, and meet the yield rate requirements of bubble film forming.

[0039] refer to Figures 1 to 3 A push ring 31 is installed on the carrying roller 3. When the carrying roller 3 carries the rolled original film, the end of the push ring 31 can be against the end of the rolled original film or the inner tube of the rolled original film can be sleeved on the push ring 31. In this embodiment, when the carrying roller 3 carries the rolled original film, the end of the push ring 31 is against the end of the rolled original film.

[0040] The driving device 4 can drive the push ring 31 to slide on the bearing roller 3, specifically: Figures 1 to 3 The driving device 4 is fixed in the bearing roller 3. The bearing roller 3 is formed with sliding grooves 32 on both sides along its length direction. The connecting rod 5 is located in the bearing roller 3. The two ends of the connecting rod 5 pass through the sliding grooves 32 on both sides of the bearing roller 3 and are fixed on the push ring 31. The driving device 4 can drive the connecting rod 5 to move back and forth along the sliding grooves 32. In this embodiment, refer to Figure 3 The driving device 4 adopts a motor, the screw rod 6 is fixed on the driving shaft of the driving device 4, a screw hole 51 is formed on the connecting rod 5, and the screw rod 6 is rotated in the screw hole 51. When the driving device 4 drives the screw rod 6 to rotate, the rotating screw rod 6 drives the connecting rod 5 to move, and the connecting rod 5 can slide along the sliding grooves 32 on both sides of the bearing roller 3, and the connecting rod 5 can drive the push ring 31 to slide on the bearing roller 3. In other embodiments, the driving device 4 can also adopt a linear motor, and the driving device 4 directly drives the connecting rod 5 to slide along the sliding grooves 32 on both sides of the bearing roller 3.

[0041] refer to Figure 2 The bearing roller 3 is arranged in an inclined shape, that is, when the air cushion machine is placed horizontally on a plane, the left end of the bearing roller 3 is low and the right end is high. In this way, when the bearing roller 3 carries the rolled original film, the rolled original film on the bearing roller 3 can maintain a tendency to slide toward the push ring 31. Figure 2When the roll of original film is carried on the carrying roller 3, the end of the roll of original film abuts against the right end of the push ring 31. When the edge of the original film is attached to the air cushion machine, it is necessary to correct the edge of the original film. Specifically, it is necessary to keep the edge of the original film away from the air cushion machine. At this time, the driving device 4 drives the push ring 31 to push the roll of original film on the carrying roller 3 to the right through the connecting rod 5, so that the original film delivered by the roll of original film returns to the normal inflation and heat sealing position. When the edge of the original film is away from the air cushion machine to achieve the correction, the driving device 4 drives the push ring 31 to push the roll of original film on the carrying roller 3 to the right through the connecting rod 5. The driving device 4 drives the push ring 31 to move leftward through the connecting rod 5. Since the supporting roller 3 is inclined (the right end is higher and the left end is lower), the rolled original film on the supporting roller 3 will slide toward the push ring 31 under the action of gravity, so that the original film sent out of the rolled original film returns to the normal inflation and heat sealing position. The supporting roller 3 is arranged in an inclined shape so that the inner cylinder of the rolled original film does not need to be sleeved on the push ring 31. It is sufficient as long as the end of the rolled original film rests on the push ring 31, which facilitates the installation and removal of the rolled original film on the supporting roller 3.

[0042] The control device 2 is the control part of the air cushion machine itself. The circuit board of the control device 2 is installed in the air cushion machine. The detection device is connected to the control device 2 through a harness. The detection device can send the detected signal to the control device 2 for processing. The control device 2 is connected to the drive device 4 through a harness. The control device 2 can control the drive device 4 to work or stop working. The control device 2 can use a microcontroller or a single-chip microcomputer. The three opposing photoelectric detections detect the light transmittance changes in the detection area and send the detected signals to the control device 2. The control device 2 can derive the degree of displacement of the original film. The control device 2 compares the degree of displacement with the preset displacement range in the control device 2. When it exceeds the set range, the control device 2 controls the drive device 4 to work. The drive device 4 pushes the rolled original film on the carrying roller 3 to move through the push ring 31, so that the edge of the original film returns to the set range to ensure the stability of inflation and heat sealing.

[0043] refer to Figures 1 to 3 An air cushion machine includes an air cushion machine body 10 and an original film correction structure. In addition, the air cushion machine may also include a cross bar 20 and a bracket 30.

[0044] refer to Figure 1 and Figure 3 The bracket 30 is fixed on the vertical plate 102 of the air cushion machine body 10, and the upper mounting seat 40 ( Figure 4 The end of the bracket 30 is fixed to the vertical plate 102 of the air cushion machine body 10 by bolts, and the bracket 30 can be designed as a U-shaped plate. The bracket 30 can provide installation support for the detection device and can also effectively protect the detection device. The upper mounting seat 40 for mounting the receiving end 12 of the photoelectric receiver, the vertical plate 102 of the air cushion machine body 10, and the lower mounting seat 50 for mounting the transmitting end 11 of the photoelectric transmitter form a C-shaped structure, and the edge of the original film passes through the C-shaped structure.

[0045] refer to Figures 1 to 3 The end of the cross bar 20 is fixed on the vertical plate 102 of the air cushion machine body 10, and the cross bar 20 is arranged perpendicular to the conveying direction of the original film. Figure 4 and Figure 6 A accommodating cavity 201 is formed on the cross bar 20, and an upper mounting seat 40 for mounting the receiving end 12 of the opposing photoelectric device is accommodated in the accommodating cavity 201. The bottom of the lower cover 402 of the upper mounting seat 40 is flush with the bottom of the cross bar 20. The original film on the supporting roller 3 can enter the detection area of ​​the opposing photoelectric device from the bottom of the cross bar 20. The cross bar 20 can not only guide the transportation of the original film, but also prevent the outermost side of the original film from warping during the transportation process to affect the normal inflation and heat sealing.

[0046] refer to Figures 1 to 3 The end of the carrying roller 3 is fixed on the air cushion machine body 10, the carrying roller 3 is inclined, and the corresponding photoelectric device is located on the conveying path of the original film between the carrying roller 3 and the inflation nozzle 101 of the air cushion machine body 10.

[0047] refer to Figure 8 In the air cushion machine of the present invention, the roll original film 70 is carried on the carrying roller 3, and the left end of the roll original film 70 is against the push ring 31 on the carrying roller 3. The original film sent out by the roll original film 70 enters the detection area of ​​the detection device from the bottom of the cross bar 20 and is pulled and transported to the inflation nozzle 101 ( Figure 1 Inflation is performed at the position shown in the figure. During the original film being pulled and conveyed, the reflected photoelectric can detect in real time whether the edge of the original film is offset. When the reflected photoelectric detects that the edge of the original film is offset, the reflected photoelectric sends the detected signal to the control device 2. The control device 2 controls the driving device 4 to work. The driving device 4 drives the push ring 31 on the carrying roller 3 to slide on the carrying roller 3, and drives the rolled original film 70 to move on the carrying roller 3, so that the original film sent out by the rolled original film 70 returns to the normal inflation and heat sealing position, and corrects the edge of the original film, so that the edge of the original film returns to the normal inflation and heat sealing position, reduces the probability of the original film deviating from the normal inflation and heat sealing position, improves the stability of the air cushion machine operation, and reduces bubbles. The defective rate of film forming; when the edge of the original film is attached to the vertical plate 102 of the air cushion machine body 10, the edge of the original film needs to be corrected, specifically, the edge of the original film needs to be moved away from the vertical plate 102 of the air cushion machine body 10. At this time, the driving device 4 drives the push ring 31 to push the rolled original film 70 on the supporting roller 3 to the right, so that the original film delivered by the rolled original film 70 returns to the normal inflation and heat sealing position. When the edge of the original film is away from the vertical plate 102 of the air cushion machine body 10 to achieve the correction, the driving device 4 drives the push ring 31 to move to the left, and the rolled original film on the supporting roller 3 will slide toward the push ring 31 under the action of gravity, so that the original film delivered by the rolled original film 70 returns to the normal inflation and heat sealing position.

[0048] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. Original film deviation correction structure, characterized in that: include: A detection device for detecting whether the original film is offset, wherein the edge of the original film can pass through the detection area of ​​the detection device; A control device, wherein the detection device is electrically connected to the control device; A bearing roller for bearing the rolled original film, wherein the bearing roller is provided with a push ring. When the roll-shaped original film is carried on the carrying roller, the end of the push ring can be against the end of the roll-shaped original film or the inner cylinder of the roll-shaped original film can be sleeved on the push ring; and A driving device is provided, wherein the driving device can drive the push ring to slide on the carrying roller, and the control device is electrically connected to the driving device.

2. The original film deviation correction structure according to claim 1 is characterized in that: The detection device is a photoelectric detector, the number of which is at least one, and the edge of the original film can pass between the transmitting end and the receiving end of the photoelectric detector.

3. The original film deviation correction structure according to claim 1 is characterized in that: The detection device is a pair of photoelectric detectors, and there are three pair of photoelectric detectors. The emitting ends of the three pair of photoelectric detectors are staggered along the direction perpendicular to the conveying direction of the original film, and the receiving ends of the three pair of photoelectric detectors are staggered along the direction perpendicular to the conveying direction of the original film. The edge of the original film can pass between the emitting end and the receiving end of the pair of photoelectric detectors.

4. The original film deviation correction structure according to claim 3 is characterized in that: The three transmitting ends of the photoelectric arrays are arranged in a triangle, and the three receiving ends of the photoelectric arrays are arranged in a triangle.

5. The original film deviation correction structure according to any one of claims 1 to 4, characterized in that: It also includes a connecting rod, the driving device is arranged in the load-bearing roller, and the load-bearing roller is provided with sliding grooves on both sides along its length direction. The connecting rod is arranged in the load-bearing roller, and the two ends of the connecting rod pass through the sliding grooves and are fixed on the push rings respectively. The driving device can drive the connecting rod to move back and forth along the sliding grooves.

6. The original film deviation correction structure according to claim 5, characterized in that: The carrying roller is inclined so that the rolled original film carried on the carrying roller maintains a tendency to slide toward the push ring direction.

7. The original film deviation correction structure according to claim 5, characterized in that: It also includes a screw rod, the driving device is a motor, the driving device drives the screw rod to rotate, and the connecting rod is provided with a screw hole, and the screw rod is rotated in the screw hole.

8. An air cushion machine, characterized in that: It comprises an air cushion machine body and the original film correction structure described in any one of claims 1 to 7, wherein the detection device and the supporting roller are both arranged on the air cushion machine body, and the detection device is located on the conveying path of the original film between the supporting roller and the inflation nozzle of the air cushion machine body.

9. The air cushion machine according to claim 8, characterized in that: It also includes a cross bar, the end of which is arranged on the air cushion machine body, the cross bar is arranged perpendicular to the conveying direction of the original film, and the original film on the supporting roller enters the detection area of ​​the detection device from the bottom of the cross bar.

10. The air cushion machine according to claim 8, characterized in that: It also includes a bracket, which is arranged on the air cushion machine body, and the detection device is arranged on the bracket.

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