Film material welding automatic adjustment device, method and bagging machine

Abstract

The present invention discloses an automatic film welding adjustment device, method, and bagging machine. The device includes a sensing mechanism, a tensioning roller, and left and right adjustment modules. The sensing mechanism is located between the film welding mechanism and the film feeding mechanism, and is used to detect whether the lengths of the left and right film materials before welding are consistent. The left and right adjustment modules are connected to the tensioning roller and are used to adjust the movement of the tensioning roller based on the signal from the sensing mechanism to ensure that the lengths of the left and right film materials before welding are consistent. The tensioning roller is located on the film feeding mechanism and is used to guide and tighten the film material and adjust the tension force after the left and right film materials are separated. The present invention uses the sensing mechanism to detect whether the lengths of the left and right film materials are consistent, and then uses the left and right adjustment modules to automatically adjust the tensioning roller to ensure that the tension forces of the left and right film materials are consistent, avoiding the problem of uneven lengths. This ensures that the prepared bagging meets process requirements without the need for manual machine downtime and intervention.

Description

Technical Field

[0001] The present invention relates to the technical field of bagging machine equipment, in particular to a film material welding automatic adjustment device and method and a bagging machine. Background Art

[0002] The existing air-conditioning production line produces 3,000 air conditioners per shift every day. Each air conditioner needs to be packaged in plastic bags, which is labor-intensive and has low production efficiency. Currently, automatic packaging of plastic bags is achieved through side-type bagging equipment, which saves labor and improves production efficiency.

[0003] However, during the bagging process, the tension of the left and right films is difficult to control, resulting in a height difference between the two films at the forming template, which in turn causes the bags to have different lengths after the two films are welded. As a result, the bagged products do not meet the process requirements, and the equipment needs to be manually paused to adjust the left and right films, affecting the production rhythm. The existing technology cannot automatically adjust the tension of the left and right films. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art bagging machine in that when the tension of the left and right pieces of film is different during the bagging process, the bags after welding have different lengths of legs, which does not meet the process requirements, and requires manual shutdown to adjust the left and right sides of the film, affecting the production rhythm and degree of automation, the purpose of the present invention is to provide an automatic adjustment device and method for film welding and a bagging machine.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an automatic adjustment device for film welding, including a sensing mechanism, a tensioning roller and left and right adjustment modules;

[0006] The sensing mechanism is provided between the film material welding mechanism and the film material feeding mechanism, and is used to detect whether the lengths of the left and right film materials before welding are consistent;

[0007] The left and right adjustment modules are connected to the tensioning roller and are used to adjust the movement of the tensioning roller according to the signal of the sensing mechanism so that the lengths of the left and right film materials before welding remain consistent;

[0008] The tensioning roller is arranged on the film material feeding mechanism, and is used for guiding and tightening the film material, and adjusting the tensioning force after the film materials on the left and right sides are separated.

[0009] As a further improvement of the present invention: the sensing mechanism includes a first sensor and a second sensor, the first sensor is used to detect the left film material, the second sensor is used to detect the right film material, and the first sensor and the second sensor are at the same horizontal height.

[0010] As a further improvement of the present invention: the first sensor is installed on the left molding plate, and the second sensor is installed on the right molding plate. The left molding plate and the right molding plate are arranged opposite to each other, and the left molding plate and the right molding plate separate the bonded left and right film materials.

[0011] As a further improvement of the present invention: the first sensor and the second sensor are both photoelectric sensors.

[0012] As a further improvement of the present invention: the left and right adjustment modules include a driving mechanism and a transmission structure, the output end of the driving mechanism is connected to the transmission structure, and the transmission structure is connected to the tensioning roller.

[0013] As a further improvement of the present invention: the left and right adjustment modules further include slide rails, and the transmission structure is slidably mounted on the slide rails.

[0014] As a further improvement of the present invention: the driving mechanism is a motor.

[0015] Based on the same inventive concept, the present invention also provides a method for automatically adjusting film welding, which is characterized by using the above-mentioned automatic adjustment device for film welding, and the method specifically includes:

[0016] When the first sensor detects the left film material, the driving mechanism drives the tensioning roller to move toward the right film material, thereby increasing the tensioning force of the left film material until the first sensor no longer detects the left film material.

[0017] As a further improvement of the present invention: it also includes: when the second sensor detects the right side film material, the driving mechanism drives the tensioning roller to move toward the left side film material, so that the tensioning force of the right side film material becomes larger, until the second sensor no longer detects the right side film material.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention sets a sensing mechanism between the film material welding mechanism and the film material feeding mechanism to detect whether the lengths of the left and right film materials coming from the film material feeding mechanism before welding are consistent. Left and right adjustment modules are also installed to automatically adjust the moving direction and moving distance of the tensioning roller according to the signal of the sensing mechanism, and then adjust the tensioning force after the left and right film materials are separated, so that the lengths of the left and right film materials before welding remain consistent, effectively solving the problem of the length of the film materials when the film material welding equipment is welding, conforming to the packaging process, and without the need for equipment shutdown for manual adjustment. The present invention can automatically adjust the tensioning force of the film materials on the left and right sides without affecting the production rhythm and degree of automation.

[0020] 2. When the right side film material or the left side film material is detected, the driving mechanism of the present invention drives the tensioning roller to move toward the left side film material or the right side film material, so that the tensioning force of the right side film material or the left side film material becomes larger, until the right side film material or the left side film material is no longer detected, keeping the tensioning force of the film materials on both sides the same, achieving the consistency of the length of the film materials on both sides, and avoiding the phenomenon of long and short legs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a schematic structural diagram of an automatic adjustment device for film material welding according to the present invention.

[0022] Figure 2 The figure is a front view of an automatic adjustment device for film material welding according to the present invention.

[0023] Figure 3 The present invention is a schematic diagram of the process of an automatic adjustment device for film material welding.

[0024] Reference numerals:

[0025] 1. Sensing mechanism, 11. First sensor, 12. Second sensor, 2. Tensioning roller, 3. Left and right adjustment modules, 31. Driving mechanism, 32. Transmission structure, 33. Slide rail, 4. Film material feeding mechanism, 5. Left forming plate, 6. Right forming plate, 8. Conveyor line. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "upper end face", "lower end face", "top", "bottom", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention, and therefore cannot be understood as limiting the actual use direction of the present invention.

[0028] In order to solve the technical problems in the prior art, the present invention is further described with reference to the accompanying drawings and embodiments:

[0029] Example 1

[0030] When the bags put out by the side bagging machine have the problem of long and short legs, it means that there is a height difference between the left and right film materials coming out of the film material feeding mechanism 4 at the forming plate, which leads to the bags made after the film materials are welded to have inconsistent lengths, that is, the long and short legs phenomenon. The reason for the height difference between the left and right film materials after separation at the forming plate is analyzed: it is mainly due to the inconsistent tensioning force of the film material at the forming plate, which causes the film material on one side to be loose and the film material on the other side to be too tight, which leads to a height difference, making the lengths of the film materials on both sides inconsistent after the film materials are welded.

[0031] In order to solve the problem of long and short legs in the process of bagging by existing bagging machines, Figure 1-Figure 2 As shown, the present invention discloses an automatic adjustment device for film material welding, comprising a sensing mechanism 1, a tensioning roller 2 and left and right adjustment modules 3; the sensing mechanism 1 is arranged between the film material welding mechanism and the film material feeding mechanism 4, and is used to detect whether the lengths of the film materials on the left and right sides before welding are consistent; the left and right adjustment modules 3 are connected to the tensioning roller 2, and are used to adjust the moving direction and moving distance of the tensioning roller 2 according to the signal of the sensing mechanism 1, so that the lengths of the film materials on the left and right sides before welding remain consistent; the tensioning roller 2 is arranged on the film material feeding mechanism 4, and is used to guide and tighten the film bag film material, and adjust the tensioning force after the film materials on the left and right sides are separated.

[0032] Specifically, when the sensing mechanism 1 receives a signal that the lengths of the left and right film materials before welding are inconsistent, the left and right adjustment modules 3 drive the tensioning roller 2 to move to the left or right direction to keep the lengths of the left and right film materials before welding consistent.

[0033] In the process of the left and right adjustment modules 3 driving the tensioning roller 2 to move, the tensioning force of the left film material is automatically and flexibly adjusted to be the same as the tensioning force of the right film material, thereby ensuring that the lengths of the left and right film materials remain consistent before welding. That is to say, the lowest end of the left film material and the lowest end of the right film material are on the same straight line or at the same height, which effectively solves the problem of long and short legs in bags prepared by existing bagging machine equipment, so that the prepared bags meet the process requirements, and there is no need to manually stop the machine to adjust the position of the tensioning roller 2. The device of this embodiment can make up for the shortcomings of automated equipment and ensure the production rhythm, product quality and pass rate.

[0034] Furthermore, the sensing mechanism 1 includes a first sensor 11 and a second sensor 12, wherein the first sensor 11 is used to detect the left film material, and the second sensor 12 is used to detect the right film material, and the first sensor 11 and the second sensor 12 are at the same level.

[0035] In order to ensure the detection effect, the first sensor 11 is installed to detect the film material on the left side, and the second sensor 12 is installed to detect the film material on the right side. The first sensor 11 and the second sensor 12 are installed at the same height, which also limits the detection position of the lowest end of the left and right film materials hanging down from the tensioning roller 2. When the film material on one side is detected by the sensor, it indicates that the length of the film material on one side is too long and there is inconsistency between the film materials on both sides.

[0036] Furthermore, the first sensor 11 is installed on the left molding plate 5, and the second sensor 12 is installed on the right molding plate 6. The left molding plate 5 and the right molding plate 6 are arranged opposite to each other, and the left molding plate 5 and the right molding plate 6 separate the bonded left and right film materials.

[0037] After the film material pulled from the film material feeding mechanism 4 is guided and tightened by the tensioning roller 2, the left film material is separated by the left forming plate 5, and the right film material is separated by the right forming plate 6. The separated left film material and the right film material form a bagging space to cover the material to be bagged.

[0038] The film material feeding mechanism 4 is arranged above the material conveying line 8. The left and right film materials at the front end along the material conveying direction have been welded and sealed, and the left and right film materials have not been welded and sealed at the left forming plate 5 and the right forming plate 6. The material is conveyed to the position of the left forming plate 5 and the right forming plate 6, and continues to be conveyed forward to contact the welded and sealed film material, and drives the film material to move forward together, and reaches the welding equipment set at the front end. The film materials on the left and right sides are welded and sealed, and thus the bag is prepared and put on the material.

[0039] Furthermore, the first sensor 11 is provided at the lower end of the left forming plate 5, and the second sensor 12 is provided at the lower end of the right forming plate 6. The installation position of the first sensor 11 is the limit height position of the sagging of the left film material. When the lowest end of the left film material exceeds the limit height position and is detected by the first sensor 11, it indicates that the left film material has drooped too long, while the right film material has drooped too short. Similarly, when the lowest end of the right film material exceeds the limit height position and is detected by the second sensor 12, it indicates that the right film material has drooped too long, while the left film material has drooped too short.

[0040] It should be noted that the installation height of the first sensor 11 on the left forming plate 5 and the installation height of the second sensor 12 on the right forming plate 6 are adjusted according to the sagging height of the film material. Since the heights of bags for packaging different materials are different, the heights of the lowest end of the film material relative to the horizontal plane are also different.

[0041] Furthermore, the first sensor 11 does not necessarily have to be installed on the left forming plate 5, and the second sensor 12 does not necessarily have to be installed on the right forming plate 6. To this end, independent fixing mechanisms can be set on the left and right sides of the material conveying line 8 for installing the first sensor 11 and the second sensor 12. Of course, the first sensor 11 and the second sensor 12 can also be installed at other positions of the bagging machine as long as they can detect the sagging of the film material. They are not listed one by one in the present invention.

[0042] Furthermore, the first sensor 11 and the second sensor 12 are both photoelectric sensors.

[0043] The film material of this embodiment is white and transparent, and a photoelectric sensor is used to detect the film material. When other film materials are used to prepare bags, the first sensor 11 and the second sensor 12 select corresponding sensors that can be detected according to the film material material, which are not listed one by one in this embodiment.

[0044] Furthermore, the left and right adjustment modules 3 include a driving mechanism 31 and a transmission structure 32 . The output end of the driving mechanism 31 is connected to the transmission structure 32 , and the transmission structure 32 is connected to the tensioning roller 2 .

[0045] During the process of adjusting the tension of the left and right film materials, the driving mechanism 31 provides power to drive the transmission structure 32 to move, thereby driving the tensioning roller 2 to move, thereby completing the action of adjusting the tension of the left and right film materials.

[0046] Furthermore, the left-right adjustment module 3 further includes a slide rail 33 , and the transmission structure 32 is slidably mounted on the slide rail 33 .

[0047] By installing the transmission structure 32 on the slide rail 33, the transmission structure 32 drives the tensioning roller 2 to move smoothly, thereby improving the stability and reliability of the structure.

[0048] Furthermore, the driving mechanism 31 is a motor, which can be a servo motor or a stepper motor.

[0049] A stepper motor converts an electrical pulse excitation signal into a corresponding angular or linear displacement, moving one step for each input pulse. A servo motor can control speed with high position accuracy, converting voltage signals into torque and speed to drive the controlled object. The rotor speed of a servo motor is controlled by an input signal and responds quickly. In automatic control systems, it serves as an actuator and features a small electromechanical time constant and high linearity. It converts the received electrical signal into an angular displacement or angular velocity output on the motor shaft.

[0050] Furthermore, the driving mechanism 31 is a cylinder.

[0051] The film material feeding mechanism 4 includes a supporting frame, the driving mechanism 31 is installed on the supporting frame, the tensioning roller 2 is also installed on the supporting frame, and slide rails 33 are provided at both ends of the tensioning roller 2.

[0052] Example 2

[0053] like Figure 3 As shown, this embodiment provides a method for automatically adjusting film material welding, including using the automatic film material welding adjustment device described in the above embodiment 1, and the method specifically includes:

[0054] When the first sensor 11 detects the left film material, the driving mechanism 31 drives the tensioning roller 2 to move toward the right film material, increasing the tensioning force of the left film material until the first sensor 11 no longer detects the left film material.

[0055] For example, when the tensioning force of the left film material is too small, causing the sagging film material to be sensed by the first sensor 11, the motor of the left and right adjustment modules 3 rotates, thereby driving the tensioning roller 2 to move to the right. At this time, since the overall opened film material moves to the right, the distance between the tensioning roller 2 and the left forming plate 5 becomes larger. Since the length of the film material remains unchanged, the tensioning force of the left film material becomes larger, and the sagging film material on the left moves upward until the first sensor 11 no longer senses the presence of film material. At this time, the motor of the left and right adjustment modules 3 stops rotating.

[0056] Furthermore, it also includes: when the second sensor 12 detects the right film material, the driving mechanism 31 drives the tensioning roller 2 to move toward the left film material, so that the tensioning force of the right film material becomes larger, until the second sensor 12 no longer detects the right film material.

[0057] Similarly, for example, when the tensioning force of the right side film material is too small, causing the sagging film material to be sensed by the second sensor 12, the motor of the left and right adjustment module 3 rotates and drives the tensioning roller 2 to move to the left. At this time, since the overall opened film material moves to the left, the distance between the tensioning roller 2 and the right side forming plate 6 becomes larger. Since the length of the film material remains unchanged, the tensioning force of the right side film material increases, and the sagging film material on the right side moves upward until the second sensor 12 no longer senses the presence of film material. At this time, the motor of the left and right adjustment module 3 stops rotating.

[0058] Through the first sensor 11, the second sensor 12 and the left and right adjustment modules 3, the entire adjustment process is ensured to be real-time dynamic adjustment, without the need for manual intervention in the bagging machine equipment, ensuring the production rhythm and degree of automation, so that the bagging meets the process requirements.

[0059] Example 3

[0060] This embodiment provides a bagging machine, including using the automatic adjustment method for film welding described in the above embodiment 2.

[0061] Example 4

[0062] This embodiment provides a bagging machine, including an automatic film welding adjustment device described in the above embodiment 1.

[0063] The foregoing description is intended only to provide specific embodiments of the present invention, intended to enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A film material welding automatic adjustment device, characterized in that: It includes a sensing mechanism, a tensioning roller and left and right adjustment modules; The sensing mechanism is provided between the film material welding mechanism and the film material feeding mechanism, and is used to detect whether the lengths of the left and right film materials before welding are consistent; The left and right adjustment modules are connected to the tensioning roller and are used to adjust the movement of the tensioning roller according to the signal of the sensing mechanism so that the lengths of the left and right film materials before welding remain consistent; The tensioning roller is arranged on the film material feeding mechanism, and is used for guiding and tightening the film material, and adjusting the tensioning force after the film materials on the left and right sides are separated.

2. The automatic film welding adjustment device according to claim 1, characterized in that: The sensing mechanism includes a first sensor and a second sensor, the first sensor is used to detect the left film material, the second sensor is used to detect the right film material, and the first sensor and the second sensor are at the same level.

3. The automatic film welding adjustment device according to claim 2, characterized in that: The first sensor is installed on the left molding plate, and the second sensor is installed on the right molding plate. The left molding plate and the right molding plate are arranged opposite to each other, and the left molding plate and the right molding plate separate the bonded left and right film materials.

4. The automatic film welding adjustment device according to claim 2 or 3, characterized in that: The first sensor and the second sensor are both photoelectric sensors.

5. The automatic film welding adjustment device according to claim 4, characterized in that: The left and right adjustment modules include a driving mechanism and a transmission structure. The output end of the driving mechanism is connected to the transmission structure, and the transmission structure is connected to the tensioning roller.

6. The automatic film welding adjustment device according to claim 5, characterized in that: The left and right adjustment modules further include a slide rail, and the transmission structure is slidably mounted on the slide rail.

7. The automatic film welding regulating device according to claim 5 or 6, characterized in that: The driving mechanism is a motor.

8. A method for automatically adjusting film welding, characterized in that: The method includes using the automatic film welding adjustment device according to claim 7, and specifically includes: When the first sensor detects the left film material, the driving mechanism drives the tensioning roller to move toward the right film material, thereby increasing the tensioning force of the left film material until the first sensor no longer detects the left film material.

9. The automatic adjustment method for film welding according to claim 8, characterized in that: Also includes: When the second sensor detects the right film material, the driving mechanism drives the tensioning roller to move toward the left film material, thereby increasing the tensioning force of the right film material until the second sensor no longer detects the right film material.

10. A bagging machine, characterized in that: The invention comprises using a film material welding automatic adjustment method as described in claim 8 or 9 above.

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