A backpack flipping machine

Abstract

This application discloses a backpack bag-flipping machine, including a backpack frame and a bag-flipping cylinder assembly. The bag-flipping cylinder assembly is disposed on the top of the backpack frame. The bag-flipping cylinder assembly includes a main cylinder, a connecting plate, front and rear opening cylinders, and four left and right opening cylinders. The main cylinder is connected to the top of the connecting plate, and the front and rear opening cylinders and the left and right opening cylinders are disposed at the bottom of the connecting plate. The left and right opening cylinders are arranged in a matrix around the front and rear opening cylinders. The advancing direction of the front and rear opening cylinders is the same as that of the main cylinder, and the advancing direction of the left and right opening cylinders is perpendicular to that of the main cylinder. By using multiple cylinders to flip the backpack, it is easy to fully open the backpack without causing dents, and secondary shaping is not required.

Description

Technical Field

[0001] This application relates to the field of rigid backpack processing technology, and in particular to a backpack bag turning machine. Background Technology

[0002] In backpack production, quality inspection, or packaging, it is often necessary to turn the backpack inside out. This could be to arrange the lining, inspect process details, or perform further processing after turning it inside out. Currently, the methods for implementing the bag-turning process mainly fall into two categories: One type is manual bag turning, which relies on operators to manually open and turn the backpack over. This method is not only labor-intensive and inefficient, making it difficult to adapt to the needs of large-scale production, but the turning effect is also greatly affected by the operator's experience, and problems such as incomplete turning, fabric wrinkles, or local stretching and deformation are prone to occur. Especially for backpacks with thicker fabrics and complex structures such as multi-layered and stiff backpacks, the difficulty of manual operation increases significantly.

[0003] Another type uses automated or semi-automated equipment for bag turning. Existing mechanical bag turning equipment mostly uses a single opening mechanism, which has limited adaptability and is difficult to be compatible with backpacks of different sizes and styles. It is also not effective at opening special parts such as the four corners of the backpack, which can easily cause the fabric to get stuck during the bag turning process. Summary of the Invention

[0004] In view of the aforementioned problems, this application is made in order to provide a backpack bag-turning machine that overcomes or at least partially solves the aforementioned problems.

[0005] This application discloses a backpack bag-flipping machine, including a backpack support and a bag-flipping cylinder assembly; The bag-flipping cylinder assembly is located on the top of the backpack frame; The bag-flipping cylinder assembly includes a main cylinder, a connecting plate, front and rear opening cylinders, and four left and right opening cylinders. The main cylinder is connected to the top of the connecting plate, and the front and rear opening cylinders and the left and right opening cylinders are located at the bottom of the connecting plate. The left and right opening cylinders are arranged in a matrix around the front and rear opening cylinders. The advancing direction of the front and rear opening cylinders is the same as that of the main cylinder, and the advancing direction of the left and right opening cylinders is perpendicular to that of the main cylinder. When the backpack is being turned over, after the main cylinder advances a preset distance, the front and rear opening cylinders advance to open the backpack front and back, the left and right opening cylinders advance to open the four corners of the backpack, the front and rear opening cylinders and the left and right opening cylinders retract, and the main cylinder continues to advance to complete the backpack turning over.

[0006] Furthermore, the main cylinder is connected to the connecting plate via a floating joint.

[0007] Furthermore, the main cylinder is provided with an auxiliary shaft, which is connected to the connecting plate.

[0008] Furthermore, the left and right opening cylinders are equipped with corner supports, which are used to open the corners of the backpack to be opened.

[0009] Furthermore, the supporting member is a detachable structure, and the supporting member is connected to the piston rod of the left and right opening cylinders by threads. The supporting member is a right-angle structure or a circular arc structure.

[0010] Furthermore, the backpack support is a hollow structure, and the position of the hollow structure corresponds to the bag-flipping cylinder assembly.

[0011] Furthermore, it also includes a pressure sensor, which is disposed on the cylinder body of the front and rear expansion cylinder and the left and right expansion cylinder, and the pressure sensor is used to detect the output pressure when the cylinder is pushed forward; When the pressure exceeds the preset threshold, the equipment automatically stops the cylinder advance and issues an alarm signal.

[0012] Furthermore, it also includes position sensors, which are respectively disposed at the piston rod ends of the main cylinder, the front and rear expansion cylinders and the left and right expansion cylinders, and the position sensors are used to detect the thrust distance of each cylinder.

[0013] Furthermore, it also includes a dust cover, which is disposed on the outside of the bag-turning cylinder assembly.

[0014] Furthermore, it also includes a controller, which is electrically connected to the bag-turning cylinder assembly.

[0015] This application has the following advantages: In the embodiments of this application, addressing the shortcomings of existing single-opening mechanisms, such as limited adaptability, difficulty in compatibility with backpacks of different sizes and styles, poor opening effect on special parts such as the four corners of the backpack, and easy fabric jamming during the bag-opening process, this application proposes a backpack bag-opening machine, including a backpack frame and a bag-opening cylinder assembly; the bag-opening cylinder assembly is located on the top of the backpack frame; the bag-opening cylinder assembly includes a main cylinder, a connecting plate, front and rear opening cylinders, and four left and right opening cylinders; the main cylinder is connected to the top of the connecting plate, and the front and rear opening cylinders are connected to the top of the connecting plate. The left and right opening cylinders are located at the bottom of the connecting plate; these cylinders are arranged in a matrix around the front and rear opening cylinders; the advancing direction of the front and rear opening cylinders is the same as that of the main cylinder, while the advancing direction of the left and right opening cylinders is perpendicular to that of the main cylinder; when the backpack is being folded, after the main cylinder advances a preset distance, the front and rear opening cylinders advance to open the backpack front and back, and the left and right opening cylinders advance to open the four corners of the backpack. The front and rear opening cylinders and the left and right opening cylinders then retract, and the main cylinder continues to advance to complete the backpack folding. By using multiple cylinders to fold the backpack, it is easy to fully open the backpack without causing dents, and secondary shaping is not required. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a backpack bag-turning machine according to an embodiment of this application; Figure 2 This is a front view of a bag-flipping cylinder assembly of a backpack bag-flipping machine according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a bag-flipping cylinder assembly of a backpack bag-flipping machine according to an embodiment of this application.

[0018] Explanation of reference numerals in the attached drawings: 100, bag-flipping cylinder assembly; 101, main cylinder; 102, front and rear opening cylinder; 103, left and right opening cylinder; 104, corner support; 105, floating joint; 106, auxiliary shaft; 107, connecting plate; 200, backpack bracket; 300, controller. Detailed Implementation

[0019] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] The inventors, through analysis of existing technologies, discovered that relying on operators to manually open and flip backpacks is labor-intensive, inefficient, and unsuitable for large-scale production. Furthermore, the flipping effect is heavily influenced by the operator's experience, easily leading to incomplete flipping, fabric wrinkles, or localized stretching and deformation. This is especially true for backpacks with thicker fabrics and complex structures, such as multi-compartment or stiff backpacks, where manual operation becomes significantly more difficult. Existing mechanical bag-flipping equipment often uses a single opening mechanism, limiting its adaptability and making it difficult to accommodate backpacks of different sizes and styles. It also struggles to effectively open special areas like the corners of backpacks, easily causing fabric jamming during the flipping process.

[0021] Reference Figure 1-3 The illustration shows a backpack bag-flipping machine, including a backpack support 200 and a bag-flipping cylinder assembly 100; The bag-flipping cylinder assembly 100 is located on the top of the backpack bracket 200; The bag-flipping cylinder assembly 100 includes a main cylinder 101, a connecting plate 107, front and rear opening cylinders 102, and four left and right opening cylinders 103. The main cylinder 101 is connected to the top of the connecting plate 107, and the front and rear opening cylinders 102 and the left and right opening cylinders 103 are disposed at the bottom of the connecting plate 107. The left and right opening cylinders 103 are arranged in a matrix around the front and rear opening cylinders 102. The advancing direction of the front and rear opening cylinders 102 is the same as that of the main cylinder 101, and the advancing direction of the left and right opening cylinders 103 is perpendicular to that of the main cylinder 101. When the backpack is being turned over, after the main cylinder 101 advances a preset distance, the front and rear opening cylinder 102 advances to open the backpack front and back, and the left and right opening cylinder 103 advances to open the four corners of the backpack. The front and rear opening cylinder 102 and the left and right opening cylinder 103 retract, and the main cylinder 101 continues to advance to complete the backpack turning over.

[0022] It should be noted that during the entire bag-flipping process, all cylinders work together according to a preset program to ensure smooth bag flipping without damaging the backpack. The specific steps are as follows: Place the backpack to be flipped onto the backpack bracket 200, ensuring that the backpack opening is facing upwards and aligned with the top flipping cylinder assembly 100.

[0023] When the main cylinder 101 is activated, the piston rod drives the connecting plate and the front and rear opening cylinders 102 and the left and right opening cylinders 103 below to move vertically downward a preset distance. This distance is set according to the height of the backpack, usually half the depth of the backpack, so that the opening cylinders can just extend into the inside of the backpack, preparing for the subsequent opening action.

[0024] The front and rear opening cylinder 102 starts first, and the piston rod pushes the front and rear fabrics apart from the inside of the backpack, eliminating the fabric wrinkles in the front and rear directions. The four or so opening cylinders 103 are activated simultaneously, and the piston rods are pushed horizontally towards the four corners of the backpack. The corner supports 104 at the ends of the backpack are used to tighten the four corners of the backpack, so that the backpack is in an open state and the fabric is prevented from getting stuck when the bag is turned over.

[0025] When the backpack is fully opened, the piston rods of the front and rear opening cylinders 102 and the left and right opening cylinders 103 retract synchronously, detaching from the backpack fabric to prevent the cylinders from snagging on the fabric and causing damage during subsequent actions.

[0026] The main cylinder 101 starts again, and the piston rod continues to push vertically downward. At this time, the open backpack gradually flips along the inner wall of the backpack frame under the thrust of the main cylinder until the main cylinder pushes to its maximum stroke, the backpack is completely flipped, and the flipping action ends.

[0027] The equipment's structure and process design specifically address the core problems of manual or traditional mechanical bag-turning: its combined front and rear opening plus four-corner opening design allows for compatibility with backpacks of different sizes and styles, eliminating the need for frequent parameter adjustments and adapting to mass production. The logic of opening before turning the bag avoids fabric wrinkling and stretching during the turning process, especially for thick fabrics or multi-compartment backpacks, ensuring thorough and damage-free turning. Using cylinders as the core actuator reduces complex transmission structures and lowers maintenance costs; meanwhile, details such as floating joints and auxiliary shafts enhance the long-term stability of the equipment.

[0028] In the embodiments of this application, addressing the limitations of existing single-opening mechanisms, such as limited adaptability, incompatibility with backpacks of different sizes and styles, poor opening effect at special parts like the four corners of the backpack, and fabric jamming during the bag-opening process, this application proposes a backpack support 200 and a bag-opening cylinder assembly 100. The bag-opening cylinder assembly 100 is located at the top of the backpack support 200. The bag-opening cylinder assembly 100 includes a main cylinder 101, a connecting plate 107, front and rear opening cylinders 102, and four left and right opening cylinders 103. The main cylinder 101 is connected to the top of the connecting plate 107, and the front and rear opening cylinders 102 are connected to the left and right opening cylinders 103. 3. The left and right opening cylinders 103 are arranged in a matrix around the front and rear opening cylinders 102. The advancing direction of the front and rear opening cylinders 102 is the same as that of the main cylinder 101, and the advancing direction of the left and right opening cylinders 103 is perpendicular to that of the main cylinder 101. When the backpack is turned over, after the main cylinder 101 advances a preset distance, the front and rear opening cylinders 102 advance to open the backpack front and back, and the left and right opening cylinders 103 advance to open the four corners of the backpack. The front and rear opening cylinders 102 and the left and right opening cylinders 103 retract, and the main cylinder 101 continues to advance to complete the backpack turning over. By setting multiple cylinders to turn the backpack over, it is easy to fully open the backpack without causing dents, and no secondary shaping is required.

[0029] The following will further describe a backpack bag-flipping machine in this exemplary embodiment.

[0030] In one embodiment of this application, the main cylinder 101 and the connecting plate 107 are connected by a floating joint 105.

[0031] It should be noted that the main cylinder 101 and the connecting plate 107 are connected by a floating joint 105, which can effectively compensate for coaxiality deviation, angular offset, and slight axial displacement that may occur during installation or movement. As a flexible connecting component, the floating joint 105 can avoid additional stress between the main cylinder 101 and the connecting plate 107 due to rigid connection, prevent the cylinder piston rod from bending, jamming, or premature wear of seals due to uneven force, and ensure that the thrust of the main cylinder 101 can be smoothly and without loss transmitted to the connecting plate 107, ensuring the action accuracy of the subsequent front and rear opening cylinders 102 and left and right opening cylinders 103, thereby improving the stability of the entire bag-turning process and the service life of the equipment.

[0032] In one embodiment of this application, the main cylinder 101 is provided with an auxiliary shaft 106, which is connected to the connecting plate 107.

[0033] It should be noted that the main cylinder 101 is equipped with an auxiliary shaft 106, which is connected to the connecting plate 107. This enhances the structural stability when the main cylinder 101 drives the connecting plate 107. The auxiliary shaft 106 is typically symmetrically distributed on both sides of the main cylinder 101, forming multi-point support with the connecting plate 107. This effectively counteracts the eccentric torque caused by uneven load under the connecting plate during the main cylinder 101's advance or retraction, preventing the connecting plate 107 from tilting, swaying, or deflecting. This not only ensures that the thrust of the main cylinder 101 is accurately transmitted along a preset direction, ensuring the consistency of the action positions of each opening cylinder, but also reduces the unilateral force on the main cylinder piston rod, lowering the risk of bending or sealing failure. This, in turn, improves the accuracy of the backpack opening and flipping actions during bag flipping and enhances the long-term reliability of the equipment.

[0034] In one embodiment of this application, the left and right opening cylinder 103 is provided with corner support 104, which is used to open the corner of the backpack to be turned over.

[0035] It should be noted that corner braces 104 are fitted to the piston rod ends of both left and right opening cylinders 103. Since the corners of backpacks are mostly made of fabric splicing or multi-layer sewn structures, directly relying on the piston rods of the cylinders can easily lead to concentrated force causing damage to the fabric, or the contact area is too small to effectively open the backpack. The optimized contact shape of the corner braces 104 can increase the contact area with the corners of the backpack, disperse the force to avoid fabric wear, and accurately embed into the corner gaps to achieve stable opening. This ensures that when the four opening cylinders operate simultaneously, the four corners of the backpack can be evenly stretched and maintain their three-dimensional shape. This clears away any wrinkles or jams in the corner fabric for the subsequent main cylinder 101 to advance and flip the bag, ensuring a smooth bag flipping process and the integrity of the backpack's shape.

[0036] In one embodiment of this application, the corner support 104 is a detachable structure. The corner support 104 is connected to the piston rod of the left and right opening cylinder 103 by threads. The corner support 104 is a right-angle structure or a circular arc structure.

[0037] It should be noted that the corner support 104 adopts a detachable design, fixed to the piston rod end of the left and right opening cylinders via a threaded connection. This connection structure ensures the stability of the connection between the corner support 104 and the piston rod, and allows for quick disassembly and replacement when needed, making operation convenient and requiring no complicated tools. Furthermore, the corner support 104 offers two options: a right-angle structure and a rounded structure. The right-angle structure is suitable for backpacks with stiff fabrics and sharp corners, precisely fitting the corner seams for stable opening. The rounded structure is designed for backpacks with soft fabrics and rounded corners, dispersing force through a smooth, curved contact surface to prevent the corner support edge from scratching the fabric or creating creases. This flexible switching between the two structures allows the bag-turning machine to adapt to different styles and fabrics of backpacks, further enhancing the equipment's versatility and protecting the backpack fabric. In one embodiment of this application, the backpack support 200 is a hollow structure, and the position of the hollow structure corresponds to the bag-flipping cylinder assembly 100.

[0038] It should be noted that the backpack support 200 is designed with a hollow structure, and the size and position of this hollow area precisely correspond to the top flip-up cylinder assembly 100. The vertical height of the hollow area matches the thrust stroke of the main cylinder 101, and the horizontal range covers the action radius of the front and rear opening cylinders and the approximately four opening cylinders 103. On the one hand, this provides a complete vertical action space for the flip-up cylinder assembly, ensuring that when the main cylinder 101 drives the connecting plate 107 and each opening cylinder, it can extend unimpeded into the backpack to be flipped, avoiding obstruction of the cylinder stroke by the support structure. At the same time, the inner wall of the hollow structure can serve as a positioning reference for the backpack. When the backpack to be flipped is placed on the outside of the support, the hollow area can guide the backpack to maintain an upward-facing posture, ensuring precise alignment between the cylinder assembly and the inside of the backpack. This provides structural support for the smooth operation of subsequent opening and flipping actions, while also preventing the fabric from getting stuck or deformed during the flipping process due to obstruction by the support.

[0039] In one embodiment of this application, a pressure sensor is also included. The pressure sensor is disposed on the cylinder body of the front and rear expansion cylinder 102 and the left and right expansion cylinder 103. The pressure detection module is used to detect the output pressure when the cylinder is pushed. When the pressure exceeds the preset threshold, the equipment automatically stops the cylinder advance and issues an alarm signal.

[0040] It should be noted that pressure sensors are installed on the cylinder bodies of the front and rear expansion cylinders 102 and the left and right expansion cylinders 103, respectively, working in conjunction with the pressure detection module to monitor the output pressure of each expansion cylinder in real time during advancement. When the backpack fabric experiences increased reaction force due to wrinkles, jamming, or dimensional deviations during cylinder advancement, causing the detected pressure value to exceed a preset threshold (set based on parameters such as the backpack fabric strength and thickness), the pressure detection module immediately sends a signal to the equipment control system, triggering the cylinder to automatically stop its advancement action and simultaneously activating the alarm device to issue a warning signal. This design effectively avoids damage such as fabric tearing and seam breakage caused by excessive expansion, while also preventing mechanical failure of the cylinders due to excessive load, thus improving the safety and reliability of equipment operation while ensuring product quality.

[0041] In one embodiment of this application, a position sensor is further included. The position sensor is respectively disposed at the piston rod end of the main cylinder 101, the front and rear expansion cylinder 102 and the left and right expansion cylinder 103. The position sensor is used to detect the thrust distance of each cylinder.

[0042] It should be noted that position sensors are installed at the piston rod ends of the main cylinder 101, the front and rear opening cylinders 102, and the left and right opening cylinders 103, respectively. These sensors can detect the actual advance distance of each cylinder in real time and feed the data back to the equipment control system. During the bag-flipping process, the segmented advance distance of the main cylinder 101, the front and rear opening amplitude of the front and rear opening cylinders 102, and the four corner opening range of the left and right opening cylinders 103 must all be precisely matched to the size of the backpack to be flipped. The position sensors, by monitoring the stroke of each cylinder in real time, ensure that the first advance of the main cylinder precisely places the opening mechanism into the appropriate position on the backpack. The advance amplitude of the front and rear opening cylinders 102 and the left and right opening cylinders 103 is sufficient to open the backpack without exceeding the fabric's tolerance, ultimately ensuring that the bag flipping is successfully completed during the second advance of the main cylinder. This precise distance detection and feedback allows the equipment to adapt to backpacks of different sizes, avoiding problems such as insufficient opening, incomplete bag flipping, or damage to the backpack due to cylinder stroke deviations, significantly improving the consistency and accuracy of the bag-flipping action.

[0043] In one embodiment of this application, a dust cover is also included, which is disposed on the outside of the bag-turning cylinder assembly 100.

[0044] It should be noted that the dust cover is completely installed on the outside of the bag-turning cylinder assembly 100, completely enclosing the core moving components such as the main cylinder 101, connecting plate 107, front and rear opening cylinders 102, and left and right opening cylinders 103. During long-term operation of the equipment, dust, fabric fibers, debris, and other impurities in the production environment can easily adhere to precision parts such as the cylinder piston rod, potentially causing cylinder jamming and seal failure, thus affecting the bag-turning accuracy and equipment lifespan. The dust cover effectively isolates these impurities, creating a clean working environment for the bag-turning cylinder assembly. Furthermore, the dust cover is typically made of transparent materials such as acrylic and features an openable inspection door. This allows operators to observe the cylinder's operating status in real time without obstructing access, while also enabling quick opening when maintenance is needed, balancing protection and ease of maintenance, indirectly ensuring the stability and efficiency of the bag-turning operation.

[0045] In one embodiment of this application, a controller 300 is further included, which is electrically connected to the bag-turning cylinder assembly 100.

[0046] It should be noted that the controller 300 is electrically connected to the bag-flipping cylinder assembly 100, and can precisely control the timing and stroke of each cylinder according to a preset program or external signal. During operation, the controller receives cylinder advance distance data from the position sensor and output pressure data from the pressure sensor, and analyzes this data in real time to determine whether the cylinder actions meet the preset parameters. Simultaneously, based on the analysis results, it sends commands to the bag-flipping cylinder assembly, synchronously coordinating the advance and retraction sequence of the front and rear opening cylinders 102 and the left and right opening cylinders 103, ensuring that each cylinder works in concert to complete the bag-flipping process. Furthermore, when the pressure sensor detects that the pressure value exceeds the threshold, the controller can immediately trigger a command to stop the cylinder advance and activate an alarm device. In addition, operators can preset cylinder action parameters for different backpack sizes through the controller, making the equipment adaptable to the bag-flipping needs of various backpacks, significantly improving the automation level and operational flexibility of the equipment.

[0047] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0048] Finally, 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 terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0049] The above provides a detailed description of a backpack bag-flipping machine provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A backpack bag-flipping machine, characterized in that, Includes backpack frame and bag-flipping cylinder assembly; The bag-flipping cylinder assembly is located on the top of the backpack frame; The bag-flipping cylinder assembly includes a main cylinder, a connecting plate, front and rear opening cylinders, and four left and right opening cylinders. The main cylinder is connected to the top of the connecting plate, and the front and rear opening cylinders and the left and right opening cylinders are located at the bottom of the connecting plate. The left and right opening cylinders are arranged in a matrix around the front and rear opening cylinders. The advancing direction of the front and rear opening cylinders is the same as that of the main cylinder, and the advancing direction of the left and right opening cylinders is perpendicular to that of the main cylinder. When the backpack is being turned over, after the main cylinder advances a preset distance, the front and rear opening cylinders advance to open the backpack front and back, the left and right opening cylinders advance to open the four corners of the backpack, the front and rear opening cylinders and the left and right opening cylinders retract, and the main cylinder continues to advance to complete the backpack turning over.

2. The backpack bag-flipping machine according to claim 1, characterized in that, The main cylinder is connected to the connecting plate via a floating joint.

3. The backpack bag-flipping machine according to claim 1, characterized in that, The main cylinder is equipped with an auxiliary shaft, which is connected to the connecting plate.

4. The backpack bag-flipping machine according to claim 1, characterized in that, The left and right opening cylinders are equipped with corner supports, which are used to open the corners of the backpack to be turned over.

5. The backpack bag-flipping machine according to claim 4, characterized in that, The supporting member is a detachable structure. The supporting member is connected to the piston rod of the left and right opening cylinders by threads. The supporting member is a right-angle structure or a round arc structure.

6. The backpack bag-flipping machine according to claim 1, characterized in that, The backpack support has a hollow structure, and the position of the hollow structure corresponds to the bag-flipping cylinder assembly.

7. The backpack bag-flipping machine according to claim 1, characterized in that, It also includes a pressure sensor, which is installed on the cylinder body of the front and rear expansion cylinder and the left and right expansion cylinder. The pressure sensor is used to detect the output pressure when the cylinder is pushed forward. When the pressure exceeds the preset threshold, the equipment automatically stops the cylinder advance and issues an alarm signal.

8. The backpack bag-flipping machine according to claim 1, characterized in that, It also includes position sensors, which are respectively installed at the piston rod ends of the main cylinder, the front and rear expansion cylinders and the left and right expansion cylinders. The position sensors are used to detect the thrust distance of each cylinder.

9. The backpack bag-flipping machine according to claim 1, characterized in that, It also includes a dust cover, which is disposed on the outside of the bag-turning cylinder assembly.

10. The backpack bag-flipping machine according to claim 1, characterized in that, It also includes a controller, which is electrically connected to the bag-turning cylinder assembly.

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