A fully automatic carton disassembling device

Abstract

The application discloses a kind of full-automatic carton disassembling equipment, and the application relates to carton disassembling recycling technical field, including fixed frame and control module, the fixed frame is provided with electric conveyor, the electric conveyor is electrically connected with control module, the outside of the fixed frame is provided with bottom frame, the upper side of the bottom frame is provided with unfolding mechanism, the upper side of the unfolding mechanism is fixedly connected with upper frame, the upper frame upper side is provided with flattening mechanism, the front side of the upper frame is provided with shaping mechanism, the application is provided with third distance measuring module and the pressing plate located in the middle of carton conveying path, the automatic detection and positioning of carton size can be realized, the distance information detected by third distance measuring module and second distance measuring module is combined with the running speed of electric conveyor to carry out size calculation, so that the middle of carton is accurately located below the pressing plate, with the characteristics of strong practicability and adaptability disassembly for different size cartons.

Description

Technical Field

[0001] This invention relates to the field of cardboard box dismantling and recycling technology, specifically to a fully automatic cardboard box dismantling device. Background Technology

[0002] With the rapid development of logistics, warehousing, e-commerce and other industries, cardboard boxes are widely used as the main packaging containers in the transportation and storage of goods. However, after the goods are unpacked, a large number of waste cardboard boxes need to be dismantled and processed in a timely manner so as to be recycled or compressed and stacked, thereby saving storage space and improving recycling efficiency. At present, most cardboard box dismantling still relies on manual operation, which is inefficient, labor-intensive and lacks a unified and standardized operating procedure when handling cardboard boxes of different sizes, which can easily cause damage to the cardboard box structure or equipment jamming.

[0003] A Chinese patent with publication number CN115301684B discloses a dismantling and recycling device for express delivery cartons. This device dismantles the cartons by cutting them, which damages the integrity of the cartons and reduces the reuse rate. If the existing recycling method could dismantle them but keep them intact, it would increase the convenience of transportation and reuse.

[0004] While some existing automated equipment has functions such as carton transport and pressing, it generally suffers from the following technical problems: the equipment is difficult to adapt to different sizes of cartons, and the size judgment and positioning accuracy is insufficient, resulting in inaccurate subsequent disassembly actions. Furthermore, the carton opening process relies on simple paddles or pressure rollers, which are unstable and prone to accidental tipping or damage to the carton structure. During the flattening process, the position of the carton cover is not effectively controlled, causing the cover to spring back after pressing, making the carton return to an expanded state, affecting subsequent transportation and stacking. The lack of a post-flattening structure makes it impossible to perform secondary shaping on the flattened carton, affecting the compression quality.

[0005] Therefore, there is an urgent need to design a fully automatic carton dismantling equipment with a reasonable structure, precise operation, strong adaptability, and the ability to efficiently and stably dismantle various types of cartons, so as to improve the automation and intelligence level of carton processing, reduce labor costs, and improve processing efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a fully automatic carton disassembly device to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fully automatic carton disassembly device, including a fixed frame and a control module, wherein an electric conveyor is provided on the fixed frame, the electric conveyor is electrically connected to the control module, a bottom frame is provided on the outer side of the fixed frame, an unfolding mechanism is provided on the upper side of the bottom frame, an upper frame is fixedly connected to the upper side of the unfolding mechanism, a flattening mechanism is provided on the upper side of the upper frame, and a shaping mechanism is provided on the front side of the upper frame;

[0008] The unfolding mechanism includes a movable component and an unfolding rod on the upper side of the movable component. The unfolding rod can rotate relative to the movable component and can move left and right relative to the bottom frame with the support of the movable component.

[0009] The flattening mechanism includes a fixing component and a downwardly movable pressure plate, the middle part of which is on the same plane as the middle part of the unfolding rod.

[0010] According to the above technical solution, the upper surface of the electric conveyor is lower than the upper surface of the fixed frame, and the upper surface of the fixed frame is lower than the upper surface of the bottom frame. The upper left and upper right sides of the bottom frame are both provided with unfolding mechanisms, and the upper frame is located on the upper side of the middle of the bottom frame.

[0011] According to the above technical solution, the movable component includes a movable base, which is slidably connected to the upper outer wall of the base frame. A sliding plate is slidably connected to the upper side of the movable base. A first electric push rod is fixedly connected to the side of the sliding plate away from the fixed frame. The other end of the first electric push rod is fixedly connected to the outer wall of the movable base. A second electric push rod is fixedly connected to the upper surface of the sliding plate. A connecting plate is fixedly connected to the other end of the second electric push rod. The lower side of the connecting plate is slidably connected to the upper side of the sliding plate. A first motor is fixedly connected to the upper side of the connecting plate. The output end of the first motor faces the fixed frame and is fixedly connected to the middle of the unfolding rod. A first ranging module is also fixedly connected to the middle of the connecting plate near the fixed frame.

[0012] According to the above technical solution, the movable seat is connected to the outer wall of the base frame by a linear motor, and the linear motor at the connection between the movable seat and the base frame, as well as the first electric push rod, the second electric push rod, the first motor and the first ranging module are all electrically connected to the control module, and the two ends of the unfolding rod protrude toward one side of the fixed frame relative to the middle part.

[0013] According to the above technical solution, the fixing component includes a hydraulic telescopic rod, which is fixedly connected to the upper middle part of the upper frame, and the lower end of the hydraulic telescopic rod is fixedly connected to the upper side of the pressure plate. A limit rod is fixedly connected to the upper side of the pressure plate, and the outer wall of the limit rod is slidably connected to the upper inner wall of the upper frame. Anti-deviation plates are hinged to the front and rear sides of the pressure plate by torsion springs. A second ranging module is also provided on the upper side of the upper frame. A circular hole is opened on the pressure plate below the second ranging module. A third ranging module is fixedly connected to the rear side of the upper frame.

[0014] According to the above technical solution, a fourth ranging module is fixedly connected to both the left and right sides of the upper frame, and the lower end of the fourth ranging module faces the middle of the upper surface of the electric conveyor. A rubber anti-slip pad is also fixedly connected to the lower surface of the pressure plate. The fourth ranging module, the third ranging module, the second ranging module, and the hydraulic telescopic rod are all electrically connected to the control module.

[0015] According to the above technical solution, the shaping mechanism includes a rotating rod, both sides of which are rotatably connected to the outer wall of the upper frame through bearings. A second motor is provided at one end of the rotating rod. The outer wall of the second motor is fixedly connected to the outer wall of the upper frame, and the output end of the second motor is fixedly connected to one end of the rotating rod. A pressure roller is fixedly connected to the outer wall of the rotating rod.

[0016] According to the above technical solution, the rotating rod is set on the front side of the upper frame, the second motor is electrically connected to the control module, and the left and right width of the pressure roller is greater than the left and right width of the fixed frame.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, by setting a third ranging module and a pressure plate located in the middle of the carton conveying path, can realize the automatic detection and positioning of the carton size. The control module calculates the size based on the distance information detected by the third ranging module and the second ranging module combined with the running speed of the electric conveyor, so that the middle of the carton is accurately located under the pressure plate, thereby realizing the precise execution of the pressing action and improving the adaptability and positioning accuracy of the device.

[0018] By setting up a moving seat, unfolding rod and first ranging module composed of a multi-degree-of-freedom moving and rotating structure, the accurate positioning and insertion of the transverse cover of the carton can be achieved. The control module accurately controls the displacement of the moving seat and the posture change of the unfolding rod according to the sensing distance, so that the unfolding rod completes the outward flipping action after being inserted into the gap of the cover, improving the stability and reliability of the opening action and adapting to the opening needs of cartons with different structures.

[0019] By incorporating a pressure plate and an electric conveyor, and utilizing the structural characteristics of the cover plate connecting with the carton during the flipping process, the carton automatically transforms from a square shape to a parallelogram and is flattened after being pressed in the middle. This prevents damage to the carton caused by excessive pressure or uneven force. In addition, the height difference setting causes creases to form on the cover plate after flipping, effectively suppressing the rebound of the cover plate and improving the stability of the flattened carton.

[0020] Equipped with a rotating rod, a second motor, and a pressure roller, the carton is initially flattened and then fed forward to the pressure roller. Through the coordinated pressing of the pressure roller with the creases on the edge of the carton and the connection part of the cover plate, the problem of carton expansion caused by structural springback is further reduced, and the compactness and convenience of stacking and recycling the carton after disassembly are improved. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the bottom frame structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the unfolding mechanism of the present invention;

[0025] Figure 4 This is a schematic diagram of the flattening mechanism of the present invention;

[0026] Figure 5 This is a schematic diagram of the lower structure of the flattening mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the prototype mechanism of the present invention;

[0028] In the diagram: 1. Fixed frame; 2. Electric conveyor; 3. Base frame; 4. Unfolding mechanism; 5. Upper frame; 6. Flattening mechanism; 7. Shaping mechanism; 401. Moving seat; 402. Slide plate; 403. First electric push rod; 404. Second electric push rod; 405. Connecting plate; 406. First motor; 407. Unfolding rod; 408. First ranging module; 601. Hydraulic telescopic rod; 602. Pressure plate; 603. Limiting rod; 604. Anti-deviation plate; 605. Second ranging module; 606. Third ranging module; 607. Fourth ranging module; 608. Rubber anti-slip mat; 701. Rotating rod; 702. Second motor; 703. Pressure roller. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-6 The present invention provides a technical solution: a fully automatic carton disassembly device, including a fixed frame 1 and a control module. An electric conveyor 2 is provided on the fixed frame 1 and is electrically connected to the control module. A bottom frame 3 is provided on the outside of the fixed frame 1. An unfolding mechanism 4 is provided on the upper side of the bottom frame 3. An upper frame 5 is fixedly connected to the upper side of the unfolding mechanism 4. A flattening mechanism 6 is provided on the upper side of the upper frame 5. A shaping mechanism 7 is provided on the front side of the upper frame 5. The upper surface of the electric conveyor 2 is lower than the upper surface of the fixed frame 1, and the upper surface of the fixed frame 1 is lower than the upper surface of the bottom frame 3. An unfolding mechanism 4 is provided on both the upper left and upper right sides of the bottom frame 3. The upper frame 5 is located on the upper side of the middle of the bottom frame 3.

[0031] The unfolding mechanism 4 includes a movable component and an unfolding rod 407 on the upper side of the movable component. The unfolding rod 407 can rotate relative to the movable component and can move left and right relative to the bottom frame 3 with the support of the movable component. The movable component includes a movable base 401, which is slidably connected to the upper outer wall of the bottom frame 3. A slide plate 402 is slidably connected to the upper side of the movable base 401. A first electric push rod 403 is fixedly connected to the side of the slide plate 402 away from the fixed frame 1. The other end of the first electric push rod 403 is fixedly connected to the outer wall of the movable base 401. A second electric push rod 404 is fixedly connected to the upper surface of the slide plate 402. A connecting plate 405 is fixedly connected to the other end of the second electric push rod 404. The lower side of the connecting plate 405 is slidably connected to the upper side of the sliding plate 402. The upper side of the connecting plate 405 is fixedly connected to the first motor 406. The output end of the first motor 406 faces the fixed frame 1, and the output end of the first motor 406 is fixedly connected to the middle part of the unfolding rod 407. The middle part of the connecting plate 405 near the fixed frame 1 is also fixedly connected to the first ranging module 408. The moving seat 401 is connected to the outer wall of the bottom frame 3 through a linear motor. The linear motor at the connection between the moving seat 401 and the bottom frame 3, as well as the first electric push rod 403, the second electric push rod 404, the first motor 406, and the first ranging module 408 are all electrically connected to the control module. The two ends of the unfolding rod 407 protrude towards the side of the fixed frame 1 relative to the middle part.

[0032] The flattening mechanism 6 includes a fixing component and a downwardly movable pressure plate 602. The middle part of the pressure plate 602 is on the same plane as the middle part of the unfolding rod 407. The fixing component includes a hydraulic telescopic rod 601, which is fixedly connected to the upper middle part of the upper frame 5, and the lower end of the hydraulic telescopic rod 601 is fixedly connected to the upper side of the pressure plate 602. A limit rod 603 is fixedly connected to the upper side of the pressure plate 602, and the outer wall of the limit rod 603 is slidably connected to the upper inner wall of the upper frame 5. Anti-deviation plates 604 are hinged to the front and rear sides of the pressure plate 602 by torsion springs. A second ranging module 605 is also provided. A round hole is opened on the pressure plate 602 at the lower side of the second ranging module 605. A third ranging module 606 is fixedly connected to the rear side of the upper frame 5. A fourth ranging module 607 is fixedly connected to both the left and right sides of the upper frame 5. The lower end of the fourth ranging module 607 faces the middle of the upper surface of the electric conveyor 2. A rubber anti-slip pad 608 is also fixedly connected to the lower surface of the pressure plate 602. The fourth ranging module 607, the third ranging module 606, the second ranging module 605 and the hydraulic telescopic rod 601 are all electrically connected to the control module.

[0033] During the application of this device, the carton should be placed on the upper side of the conveyor belt of the electric conveyor 2 and conveyed from back to front. When the carton moves to the third distance measuring module 606, the third distance measuring module 606 detects that the distance to the lower side has shortened. When the third distance measuring module 606 detects that the distance to the lower side has increased, it means that the carton has passed. The third distance measuring module 606 inputs the distance information to the lower side into the control module. The control module calculates the front and rear width of the carton based on the moving speed of the electric conveyor 2 and the time when the third distance measuring module 606 detects the distance shortening. At the same time, the carton will pass under the second distance measuring module 605 when it moves forward. At this time, the second distance measuring module 605 detects that the distance to the lower side has shortened. At this time, the control module judges the forward moving distance of the carton based on the moving speed of the electric conveyor 2. When the moving distance of the carton is equal to half the length of the carton, the middle of the carton is located at the lower middle of the pressure plate 602.

[0034] After shutting down the electric conveyor 2, the hydraulic telescopic rod 601 is started. At this time, the hydraulic telescopic rod 601 pushes the pressure plate 602 to move downward. During this process, the pressure plate 602 can detect the distance from its lower end to the upper surface of the carton. By subtracting the distance from the preset height of the pressure plate 602 to the lower side of the limit rod 603 from this distance, the distance from the lower side of the pressure plate 602 to the upper surface of the carton can be obtained. Therefore, the hydraulic telescopic rod 601 can push the pressure plate 602 downward according to this distance, so that the pressure plate 602 falls and fits against the upper surface of the carton, and avoids squeezing damage to the carton.

[0035] After the carton is fixed, the middle of the carton and the first distance measuring module 408 are on the same plane. The first distance measuring module 408 can detect the distance between itself and the carton's horizontal cover. The control module calculates the distance from the first distance measuring module 408 to the carton's horizontal cover by subtracting the distance from the right end of the unfolding rod 407 to the first distance measuring module 408. This gives the distance from the right end of the unfolding rod 407 to the carton's horizontal cover. The control module then activates the linear motor at the connection between the moving base 401 and the unfolding mechanism 4, moving the moving base 401 this distance closer to the carton. During the movement of the moving base 401, the first motor 406 rotates the unfolding rod 407, making it vertical. After the moving base 401 moves, the first electric push rod 403 is activated, pushing the slide plate 402 two centimeters, causing the right end of the unfolding rod 407 to... The device moves from the vertical seam between the two horizontal cover plates of the carton to between the horizontal and vertical cover plates. At the same time, the first motor 406 drives the unfolding rod 407 to rotate, so that the unfolding rod 407 is in a horizontal position. Then, the second electric push rod 404 pushes the connecting plate 405 to move it 10 centimeters to the side of the carton, so that the unfolding rod 407 moves into the inside of the carton. Then, the first motor 406 is started to drive the unfolding rod 407 to rotate, so that the unfolding rod 407 rotates to a vertical position. The control module resets the first electric push rod 403, the slide plate 402 and the moving seat 401. During the reset process of the moving seat 401, the cover plate of the carton will be flipped outward, thereby achieving the effect of opening the carton cover plate. In this process, by positioning the carton and adaptively adjusting the distance, this device can adapt to cartons of various sizes.

[0036] During the outward flipping of the carton cover, the inner vertical cover is pressed by the outer horizontal cover, making its movement relatively smooth and reliable. After it flips outward, it will approach the side of the fourth distance measuring module 607. The output of the fourth distance measuring module 607 detects that the distance to it has decreased beyond the threshold. It will simultaneously start the electric conveyor 2 and the hydraulic telescopic rod 601 through the control module. The electric conveyor 2 drives the lower side of the carton to move forward, and the hydraulic telescopic rod 601 pushes the pressure plate 602 to continue pressing down. Since the carton cover is already open at this time, the carton will change from a square to a parallelogram and then be flattened. Thus, the carton can be disassembled and flattened without damaging it.

[0037] During the downward pressing process of the pressure plate 602, since the left and right width of the pressure plate 602 is smaller than the upper side of the electric conveyor 2, and the upper side height of the electric conveyor 2 is smaller than the upper side height of the bottom frame 3, the pressure plate 602 will press down on the middle of the carton. At this time, the cover plate that has been flipped outward is located on the surface of the bottom frame 3, which causes the middle of the carton to be pressed down and flattened, and the cover plate to be flipped up. This causes the edge of the cover plate and the carton to be folded out, which can reduce the expansion of the flattened carton caused by the rebound of the carton cover plate. Then the hydraulic telescopic rod 601 drives the pressure plate 602 to reset, and the flattened carton continues to be transported forward.

[0038] The shaping mechanism 7 includes a rotating rod 701. Both sides of the rotating rod 701 are rotatably connected to the outer wall of the upper frame 5 via bearings. A second motor 702 is provided at one end of the rotating rod 701. The outer wall of the second motor 702 is fixedly connected to the outer wall of the upper frame 5, and the output end of the second motor 702 is fixedly connected to one end of the rotating rod 701. A pressure roller 703 is fixedly connected to the outer wall of the rotating rod 701. The rotating rod 701 is located on the front side of the upper frame 5. The second motor 702 is electrically connected to the control module, and the left and right width of the pressure roller 703 is greater than the left and right width of the fixed frame 1.

[0039] After the hydraulic telescopic rod 601 drives the pressure plate 602 to reset, the carton continues to move forward via the electric conveyor 2. At this time, the control module starts the second motor 702 to drive the rotating rod 701 and the pressure roller 703 to rotate, so that the carton passes under the pressure roller 703 and is flattened by the creases on the edge of the carton and the creases between the carton and its cover plate, thereby further preventing the carton from expanding due to deformation.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully automatic carton unpacking device, comprising a fixing frame (1) and a control module, characterized in that: An electric conveyor (2) is provided on the fixed frame (1). The electric conveyor (2) is electrically connected to the control module. A bottom frame (3) is provided on the outside of the fixed frame (1). An unfolding mechanism (4) is provided on the upper side of the bottom frame (3). An upper frame (5) is fixedly connected to the upper side of the unfolding mechanism (4). A flattening mechanism (6) is provided on the upper side of the upper frame (5). A shaping mechanism (7) is provided on the front side of the upper frame (5). The unfolding mechanism (4) includes a moving component and an unfolding rod (407) on the upper side of the moving component. The unfolding rod (407) can rotate relative to the moving component, and the unfolding rod (407) can move in the left and right directions relative to the bottom frame (3) with the support of the moving component. The movable component includes a movable base (401), which is slidably connected to the upper outer wall of the base frame (3). A sliding plate (402) is slidably connected to the upper side of the movable base (401). A first electric push rod (403) is fixedly connected to the side of the sliding plate (402) away from the fixed frame (1). The other end of the first electric push rod (403) is fixedly connected to the outer wall of the movable base (401). A second electric push rod (404) is fixedly connected to the upper surface of the sliding plate (402). (404) has a connecting plate (405) fixedly connected to the other end. The lower side of the connecting plate (405) is slidably connected to the upper side of the slide plate (402). A first motor (406) is fixedly connected to the upper side of the connecting plate (405). The output end of the first motor (406) faces the fixed frame (1), and the output end of the first motor (406) is fixedly connected to the middle part of the unfolding rod (407). A first ranging module (408) is also fixedly connected to the middle part of the connecting plate (405) near the fixed frame (1). The movable seat (401) is connected to the outer wall of the bottom frame (3) by a linear motor, and the linear motor at the connection between the movable seat (401) and the bottom frame (3), as well as the first electric push rod (403), the second electric push rod (404), the first motor (406) and the first ranging module (408) are all electrically connected to the control module, and the two ends of the unfolding rod (407) protrude toward one side of the fixed frame (1) relative to the middle part; The flattening mechanism (6) includes a fixing component and a downwardly movable pressure plate (602), the middle part of which is on the same plane as the middle part of the unfolding rod (407).

2. The fully automatic carton dismantling equipment according to claim 1, characterized in that: The upper surface of the electric conveyor (2) is lower than the upper surface of the fixed frame (1), and the upper surface of the fixed frame (1) is lower than the upper surface of the bottom frame (3). The upper left and upper right sides of the bottom frame (3) are both provided with unfolding mechanisms (4), and the upper frame (5) is located on the upper side of the middle of the bottom frame (3).

3. The fully automatic carton dismantling equipment according to claim 2, characterized in that: The fixing assembly includes a hydraulic telescopic rod (601), which is fixedly connected to the upper middle part of the upper frame (5), and the lower end of the hydraulic telescopic rod (601) is fixedly connected to the upper side of the pressure plate (602). A limit rod (603) is fixedly connected to the upper side of the pressure plate (602). The outer wall of the limit rod (603) is slidably connected to the upper inner wall of the upper frame (5). An anti-deviation plate (604) is hinged to the front side and the rear side of the pressure plate (602) by a torsion spring. A second ranging module (605) is also provided on the upper side of the upper frame (5). A round hole is opened on the pressure plate (602) at the lower side of the second ranging module (605). A third ranging module (606) is fixedly connected to the rear side of the upper frame (5).

4. The fully automatic carton dismantling equipment according to claim 3, characterized in that: The left and right sides of the upper frame (5) are both fixedly connected to a fourth ranging module (607), and the lower end of the fourth ranging module (607) faces the middle of the upper surface of the electric conveyor (2). The lower surface of the pressure plate (602) is also fixedly connected to a rubber anti-slip pad (608). The fourth ranging module (607), the third ranging module (606), the second ranging module (605) and the hydraulic telescopic rod (601) are all electrically connected to the control module.

5. The fully automatic carton dismantling equipment according to claim 4, characterized in that: The shaping mechanism (7) includes a rotating rod (701). Both sides of the rotating rod (701) are rotatably connected to the outer wall of the upper frame (5) through bearings. A second motor (702) is provided at one end of the rotating rod (701). The outer wall of the second motor (702) is fixedly connected to the outer wall of the upper frame (5), and the output end of the second motor (702) is fixedly connected to one end of the rotating rod (701). A pressure roller (703) is fixedly connected to the outer wall of the rotating rod (701).

6. The fully automatic carton dismantling equipment according to claim 5, characterized in that: The rotating rod (701) is located on the front side of the upper frame (5), the second motor (702) is electrically connected to the control module, and the left and right width of the pressure roller (703) is greater than the left and right width of the fixed frame (1).

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