Multifunctional auxiliary conveying device for vacuum bag film production

Abstract

The invention discloses a multifunctional auxiliary conveying device for vacuum bag film production, and relates to the technical field of vacuum bag film conveying, the multifunctional auxiliary conveying device comprises a machine table frame, a conveying module is mounted above the machine table frame, a vacuum module is mounted below the conveying module, and a double-sided airflow circulating mechanism is arranged outside the conveying module; the double-face airflow circulating mechanism is used for conducting double-face limiting on the vacuum bag film body through circulating airflow and conducting double-face negative pressure limiting on the vacuum bag film, through double-face control limiting, the stability in the conveying process is further improved, and the problems of wrinkles, deformation and the like caused by single-side stress can be effectively solved; according to the vacuum bag film forming device, the flatness and the product quality of a vacuum bag film are guaranteed, in addition, through repeated cyclic utilization of local gas, namely, the gas pumped by the vacuum pump is directly used for negative pressure forming of the upper vacuum bin after being guided, dependence on external fresh air is remarkably reduced, and then the overall operation energy consumption of equipment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum bag film conveying, in particular to a multifunctional auxiliary conveying device for vacuum bag film production. Background Art

[0002] The existing conveying device mainly transports vacuum bag film based on the principle of negative pressure adsorption. The vacuum pump is the core component inside the device, which is responsible for extracting the air from the area below the conveying table, thereby forming a negative pressure environment in this area, and then tightly adsorbing the vacuum bag film on the conveying table. This adsorption force can overcome the gravity of the bag film itself and the tiny interference forces that may be encountered during the conveying process, such as slight airflow disturbances, to ensure that the bag film remains stable on the conveying table.

[0003] In the Chinese patent with patent publication number CN220998490U, a vacuum bag conveying device is disclosed, comprising: a conveying platform, an air suction port, a plurality of the air suction ports are fixedly connected to the front side of the inner wall of the conveying platform, both sides of the inner wall of the air suction port are fixedly connected to mounting strips, adjacent sides of the mounting strips are provided with slide grooves, adjacent sides of the mounting strips are fixedly connected to mounting blocks near the front side, adjacent sides of the two mounting blocks are fixedly connected to connecting pieces, one side of the connecting piece is fixedly connected to a first pulley, and the vacuum bag conveying device is provided, and the sealing ring on the sealing plate will seal the mounting port to prevent air leakage. The device can intercept dust through the filter to prevent dust from accumulating inside the air suction port or directly entering the interior of the suction component. The staff only needs to clean the filter, which reduces the difficulty of dust cleaning.

[0004] However, the devices and prior art in the comparative documents still have the following defects when used: 1. Compared with the above-mentioned referenced documents, the entire cleaning process includes multiple steps, and there are strict sequence requirements between the steps. First, the handle must be pulled out to pull out the sealing plate and the mounting frame, and then the filter can be removed for cleaning, and then installed back in the reverse order. During the operation, attention must be paid to multiple details, such as ensuring that the second pulley slides normally in the slide groove when pulling the handle, that the first pulley slides stably in the slide rail when the mounting frame moves, and that the sealing ring on the sealing plate is well sealed when reinstalling. These details increase the complexity of the operation and require high skills and attention from the operator. This time-consuming operation will affect the overall operating efficiency of the equipment. In addition, the pulley and slide rail structure further increases the complexity of the equipment. The pulley will wear due to long-term use, resulting in poor sliding in the slide groove or slide rail, affecting the smooth pulling out and pushing of the mounting frame. Once the pulley rail fails, it will affect the subsequent operation and use of the entire equipment.

[0005] Moreover, during the conveying process of vacuum bag film, even if there is a filter, there will still be a small amount of dust and impurities that cannot be intercepted. This is because the mesh size of the filter is fixed, while the particle size of dust and impurities is widely distributed. For example, some extremely small dust particles are smaller than the mesh size of the filter and can pass through the filter into the interior of the suction component. As time goes by, the dust that enters will gradually accumulate, which will affect the performance of the suction component, such as reducing the suction efficiency, causing the stability of the negative pressure environment to be affected, and thus affecting the stable conveying of the vacuum bag film.

[0006] In addition, although the filter can intercept most of the dust, as the dust continues to accumulate on the filter, the air permeability of the filter will gradually decrease. Therefore, the staff will still need to observe and clean it regularly. Regular cleaning of the filter increases the workload of the staff and the complexity of equipment maintenance. The staff needs to stop the equipment at a certain period and then clean or replace the filter. This not only takes time, but also during the cleaning process, if the operation is improper, the filter or other related components may be damaged.

[0007] 2. Compared with the existing technology, when the vacuum bag film is transported from a negative pressure environment to outside the negative pressure environment, the adsorption force below will suddenly disappear. Since the bag film is adsorbed relatively flat in the negative pressure environment, after the adsorption force disappears, the gravity and elasticity of the bag film itself will cause its surface to no longer remain flat. For example, the middle part of the bag film will sag due to gravity, and the edge part will shrink due to elasticity, resulting in wrinkles on the entire bag film surface. In addition, during the transportation process, the vacuum bag film has a certain inertia. However, when the adsorption force suddenly disappears, the bag film will continue to maintain its original state of motion due to inertia. If there is not enough constraint, this inertia will cause the bag film position to shift and shake, and then cause the bag film to deviate from the original transportation track.

[0008] In view of this, the present invention proposes a multifunctional auxiliary conveying device for vacuum bag film production to remedy and improve the shortcomings of the prior art. Summary of the Invention

[0009] In order to solve the above technical problems, the present invention provides a multifunctional auxiliary conveying device for vacuum bag film production to solve the technical problems raised in the above background technology.

[0010] In order to achieve the above purpose, the technical solution adopted by the present invention is: a multifunctional auxiliary conveying device for vacuum bag film production, which is used to convey the vacuum bag film main body, including a machine frame, a conveying module is installed above the machine frame, and a vacuum module is installed below the conveying module. A double-sided airflow circulation mechanism is provided on the outside of the conveying module, and the double-sided airflow circulation mechanism is used to circulate airflow to limit the vacuum bag film main body on both sides.

[0011] Furthermore, the double-sided airflow circulation mechanism includes a lower vacuum chamber installed below the conveying module, and the two sides of the vacuum module are symmetrically connected with connecting pipes, the interiors of the connecting pipes are evenly connected with branch guide pipes, the outer walls of the branch guide pipes away from one end of the connecting pipes are fixedly connected to the upper vacuum chamber, and the ends of the branch guide pipes away from the connecting pipes are both connected with diffusion cylinders; Furthermore, a plurality of pressure balancing plates are symmetrically installed inside the upper vacuum chamber, each of the pressure balancing plates is movably connected to the upper vacuum chamber via an elastic member, and an adsorption plate is installed on the upper surface of each pressure balancing plate.

[0012] Furthermore, the lower vacuum chamber is trapezoidal as a whole, and the upper vacuum chamber is rectangular as a whole. The lower vacuum chamber and the upper vacuum chamber are respectively fixedly connected to the lower surface and upper surface of the conveying module, and the branch guide tube below the conveying module remains parallel to the inclined side wall of the lower vacuum chamber.

[0013] Furthermore, an airflow focusing plate group is installed inside the lower vacuum chamber, and the airflow focusing plate group as a whole is composed of a combination of no less than six planar plates. Each group of three planar plates is symmetrically distributed with the center line of the lower vacuum chamber as a reference, and the inclination angles of the planar plates in each group increase successively from far to near.

[0014] Furthermore, the diffuser tube is in the shape of a funnel that is wide at the top and narrow at the bottom. A diverter frame is fixedly connected to the output end of the diffuser tube. The diverter frame is in the shape of a cross, and the top of the diverter frame is in the shape of an oblique angle protrusion.

[0015] Furthermore, the pressure balance plates are installed on the inner wall of the upper vacuum chamber in an inclined manner, and the end of the pressure balance plates away from the upper vacuum chamber is initially located above the vacuum bag membrane body. The elastic parts are made of rubber material as a whole, and the adsorption plates are made of activated carbon material as a whole.

[0016] Furthermore, a negative pressure gradual transition mechanism is provided inside the conveying module, and the negative pressure gradual transition mechanism is used to buffer and relieve the negative pressure influence on the entire vacuum bag film body. The negative pressure gradual transition mechanism includes a transmission assembly symmetrically installed on the side wall of the conveying module, and the outer wall of the transmission assembly is evenly installed with gasket protrusions, and a through-hole plate is installed under the transmission assembly.

[0017] Furthermore, the transmission assembly as a whole is composed of a driven shaft and a transmission belt, the transmission assembly is fixedly connected to the gasket protrusion, and the gasket protrusion as a whole is in an incomplete arc shape.

[0018] Furthermore, circular holes are uniformly opened on the surface of the through-hole plate, the apertures of the circular holes decrease from left to right, and the gasket protrusions and the circular holes on the surface of the through-hole plate are in the same vertical plane.

[0019] Furthermore, the conveying module mainly includes a conveying table, a driving shaft and a driving motor, and the driven shaft in the transmission assembly maintains a transmission connection with the driving shaft in the conveying module through a transmission belt.

[0020] Furthermore, the vacuum module mainly includes a vacuum pump and a pressure valve, the lower vacuum chamber is connected to the input end of the vacuum pump in the vacuum module, and the connecting pipe is connected to the output end of the vacuum pump in the vacuum module.

[0021] Compared with the prior art, the present invention has the following beneficial effects: (1) This device introduces a vacuum chamber structure with upper and lower layer designs during the process of conveying vacuum bag film. First, the gas in the lower vacuum chamber is continuously extracted by a vacuum pump to form a strong negative pressure environment, ensuring that the lower surface of the vacuum bag film is firmly adsorbed on the conveyor belt. On this basis, the gas extracted by the vacuum pump is evenly introduced into the upper vacuum chamber through the branch guide tube, and the introduced gas is evenly distributed to the upper surface of the vacuum bag film through the diffusion tube, thereby realizing double-sided negative pressure limitation of the vacuum bag film. This double-sided control limitation not only further enhances the stability of the conveying process, but also effectively suppresses wrinkles, deformation and other problems caused by unilateral force, thereby ensuring the flatness of the vacuum bag film and product quality.

[0022] Secondly, this device recycles local gas, that is, the gas extracted by the vacuum pump is directly used to form the negative pressure of the upper vacuum chamber after being guided, which significantly reduces the dependence on fresh air from the outside, thereby reducing the overall operating energy consumption of the equipment. Through this closed-loop gas management system, it not only meets the requirements of green and energy-saving production, but also helps to reduce carbon emissions and improve the overall energy efficiency of the production line.

[0023] Compared with existing technologies, this device can achieve the repeated recycling of local gas without the need to continuously introduce external gas, which can save a lot of energy in the long-term production process. Especially for large-scale vacuum bag film production companies, it can significantly reduce the energy cost of the entire production line.

[0024] Compared with the existing technology, reducing the introduction of external gas also means reducing the total amount of external impurities entering the vacuum chamber. The vacuum chamber introduced by this device relies on its internal gas circulation and is relatively closed, with fewer opportunities for impurities to enter, thereby reducing the maintenance cost of the equipment and extending the service life of the equipment.

[0025] What is particularly important is that this device introduces a pressure balance plate inside the upper vacuum chamber, thereby achieving precise control of the pressure difference between the upper and lower surfaces of the vacuum bag film. The pressure balance plate is connected to the inner wall of the upper vacuum chamber through a rubber elastic member, and can automatically adjust the distance from the bag film surface according to the size of the upper and lower pressure differences. This adaptive adjustment mechanism ensures that the pressure difference between the upper and lower surfaces of the vacuum bag film is always maintained within a stable range, so that the vacuum bag film will not produce unstable phenomena such as shaking, wrinkling or offset due to unbalanced upper and lower pressures during transportation.

[0026] First, when the negative pressure under the conveying table is too large, the vacuum bag film will be excessively adsorbed on the conveying table, causing the vacuum bag film to be stretched, deformed or even damaged. At this time, the pressure balance plate will tilt downward in this case, thereby reducing the overlapping area between the diffusion tube and the vacuum bag film, increasing the contact area between the gas and the vacuum bag film, thereby increasing the pressure on the upper surface of the bag film, balancing the upper and lower pressure differences of the vacuum bag film, and avoiding damage to the vacuum bag film due to excessive adsorption. For some vacuum bag films with fragile materials or high requirements for surface flatness, this method can effectively extend the service life of the vacuum bag film.

[0027] On the contrary, when the negative pressure under the conveying table is insufficient, the pressure balance plate moves upward until it is parallel to the vacuum bag film, thereby blocking part of the gas discharged from the diffusion cylinder and reducing the pressure on the upper surface of the vacuum bag film. This prevents the vacuum bag film from being effectively adsorbed on the conveying table due to the small pressure difference between the upper and lower parts, and avoids the vacuum bag film from sliding, dislocation, etc. during the conveying process, thereby protecting the integrity of the vacuum bag film, ensuring that the vacuum bag film can be conveyed in the predetermined manner, and improving the quality and reliability of product packaging.

[0028] Among them, this device also installs an adsorption plate made of activated carbon material on the surface of the pressure balance plate. Combined with the gas circulation inside the vacuum chamber, the gas purification needs can be met only by the adsorption plate, without the need for a complex purification structure, thereby making the structure of the entire device more compact and simple, and maximizing energy savings while ensuring that the gas quality meets the circulation requirements.

[0029] Among them, the diffusion tube is in the shape of a funnel that is wide at the top and narrow at the bottom. This shape is conducive to the diffusion of gas. When the gas enters the diffusion tube from the narrower lower end, the flow rate of the gas will gradually decrease as the tube body gradually widens. According to Bernoulli's principle, the pressure distribution of the gas will be more uniform. In addition, the output port of the diffusion tube is in the shape of a cross as a whole and has a diverter rack with an oblique convex shape on the top, which further enhances the uniform dispersion effect of the gas. When the gas is output from the diffusion tube and reaches the diverter rack, the cross-shaped diverter rack divides the gas into four main flow directions, and the shape of the oblique convex shape enables the gas to be dispersed more smoothly along the oblique direction during diversion, avoiding the phenomenon of vortex or local concentration of gas during diversion.

[0030] Among them, the airflow converging plate group introduced by this device is composed of a combination of no less than six flat plates, and is arranged with a specific symmetrical distribution and inclination angle. Through this structure, the gas can be guided to flow to the absorption area of the vacuum pump. Since the inclination angles of the flat plates in each group increase from far to near, the flow direction of the gas is changed more strongly, and the dispersed gas is gradually gathered and guided to the absorption area of the vacuum pump, thereby accelerating the overall absorption speed of the gas. Through the guidance of the flat plates, it gradually converges to the absorption area of the vacuum pump, increasing the proportion of gas in the entire lower vacuum chamber absorbed by the vacuum pump, thereby improving the working efficiency of the vacuum pump.

[0031] (2) This device introduces a gradual negative pressure transition zone and is designed to gradually reduce the diameter of the vent holes on the through-hole plate from the negative pressure environment side to the normal environment side, so that the adsorption force under the vacuum bag film gradually decreases. This process follows the principle of gradual stress change, effectively avoiding the local deformation of the vacuum bag film caused by sudden stress changes, significantly improving the flatness of the vacuum bag film, and gradually reducing the effect of stress, which can ensure that the strain distribution inside the vacuum bag film is more uniform when it is subjected to uniformly changing forces. This uniform strain helps to maintain the original shape of the vacuum bag film and prevent wrinkles caused by excessive local strain.

[0032] This device installs a transmission assembly at the exact center above the perforated plate to keep the circular roller rotating. The arc-shaped protrusions on the surface of the circular roller intermittently and slightly lift the conveyor belt upward during rotation. This method enhances the friction between the conveyor belt and the vacuum bag film, effectively preventing the middle part of the bag film from sagging due to insufficient friction to limit its movement. This greatly improves the stability of the vacuum bag film during transportation and ensures its accurate and smooth delivery to the next process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention; Figure 2Schematic diagram of the three-dimensional structure of the double-sided airflow circulation mechanism of the present invention; Figure 3 This is a schematic diagram of the interior of the lower vacuum chamber of the present invention; Figure 4 This is a schematic diagram of the internal three-dimensional structure of the vacuum chamber of the present invention; Figure 5 This is a schematic diagram of the main body of the vacuum bag film of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the partially enlarged three-dimensional structure at center A; Figure 7 For the present invention Figure 5 A schematic diagram of the partially enlarged three-dimensional structure at point B in the middle; Figure 8 This is a schematic diagram of the planar structure of the vacuum module of the present invention; Figure 9 Schematic diagram of the three-dimensional structure of the negative pressure gradual transition mechanism in the present invention; Figure 10 For the present invention Figure 9 A schematic diagram of the partially enlarged three-dimensional structure at point C in the middle; Figure 11 It is a schematic diagram of the three-dimensional structure of the transmission component of the present invention.

[0034] The numbers in the figure are: 1. Machine frame; 11. Conveying module; 12. Vacuum module; 13. Vacuum bag membrane body; 2. Double-sided airflow circulation mechanism; 21. Lower vacuum chamber; 22. Airflow focusing plate group; 23. Connecting pipe; 24. Branch guide pipe; 25. Upper vacuum chamber; 26. Diffuser; 27. Diverter rack; 28. Pressure balance plate; 29. Elastic part; 210. Adsorption plate; 3. Negative pressure gradual transition mechanism; 31. Transmission assembly; 32. Gasket protrusion; 33. Through-hole plate. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention. It should be noted that the structures and working principles of the above-mentioned components such as the machine frame 1, the conveying module 11, the vacuum module 12, and the vacuum bag film body 13 belong to the existing technology and will not be described in detail here.

[0036] Example 1: Please refer to Figure 1 and Figure 4As shown, a multifunctional auxiliary conveying device for vacuum bag film production is used to convey a vacuum bag film body 13. It includes a machine frame 1, a conveying module 11 is installed above the machine frame 1, a vacuum module 12 is installed below the conveying module 11, and a double-sided airflow circulation mechanism 2 is provided outside the conveying module 11. The double-sided airflow circulation mechanism 2 is used to circulate air to limit the vacuum bag film body 13 on both sides. It should be noted that the conveying module 11 mainly includes a conveying table, a driving shaft and a driving motor. The driven shaft in the transmission assembly 31 maintains a transmission connection with the driving shaft in the conveying module 11 through a transmission belt. The vacuum module 12 mainly includes a vacuum pump and a pressure valve. The lower vacuum chamber 21 maintains communication with the input end of the vacuum pump in the vacuum module 12, and the connecting pipe 23 maintains communication with the output end of the vacuum pump in the vacuum module 12.

[0037] Please refer to Figures 2 to 8 As shown, the double-sided airflow circulation mechanism 2 includes a lower vacuum chamber 21 installed below the conveying module 11. A connecting pipe 23 is symmetrically connected to both sides of the vacuum module 12. The interior of the connecting pipe 23 is evenly connected to a branch guide pipe 24. The outer wall of the branch guide pipe 24 away from the connecting pipe 23 is fixedly connected to the upper vacuum chamber 25. The end of the branch guide pipe 24 away from the connecting pipe 23 is connected to a diffusion cylinder 26. It should be noted that the lower vacuum chamber 21 is trapezoidal as a whole, and the upper vacuum chamber 25 is rectangular as a whole. The lower vacuum chamber 21 and the upper vacuum chamber 25 are fixedly connected to the lower surface and upper surface of the conveying module 11 respectively. The branch guide tube 24 below the conveying module 11 remains parallel to the inclined side wall of the lower vacuum chamber 21. The interior of the lower vacuum chamber 21 is installed with an airflow focusing plate group 22. The airflow focusing plate group 22 is composed of no less than six flat plates. Each group of three flat plates is symmetrically distributed with the center line of the lower vacuum chamber 21 as a reference, and the flat plates in each group increase in inclination angle from far to near. The diffusion tube 26 is in the shape of a funnel that is wide at the top and narrow at the bottom. The output end of the diffusion tube 26 is fixedly connected with a diverter rack 27. The diverter rack 27 is in the shape of a cross as a whole, and the top of the diverter rack 27 is in the shape of an oblique angle.

[0038] Specifically, first, the vacuum pump in the vacuum module 12 continuously extracts the gas under the conveying table in the conveying module 11, so that a negative pressure environment is formed in this area. According to the basic principle of gas flow, gas always flows from high-pressure areas to low-pressure areas. After the vacuum pump extracts the gas in the lower vacuum chamber 21 area, the gas pressure in the lower vacuum chamber 21 is lower than the gas pressure in the branch guide tube 24 and the upper vacuum chamber 25. This pressure difference will drive the gas extracted by the vacuum pump to flow along the branch guide tube 24 to the upper vacuum chamber 25. When the gas is evenly diffused through the diffusion tube 26 in the upper vacuum chamber 25 and acts on the upper surface of the vacuum bag film body 13, at this time, due to the continuous operation of the vacuum pump, the gas in the upper vacuum chamber 25 area will continue to flow downward, thereby forming a gas circulation, thereby achieving double-sided negative pressure limiting of the vacuum bag film body 13. This double-sided control limitation not only further enhances the stability of the conveying process, but also effectively suppresses wrinkles and deformation caused by unilateral force, thereby ensuring the flatness of the vacuum bag film body 13 and product quality.

[0039] It should be noted that a plurality of pressure balancing plates 28 are symmetrically installed inside the upper vacuum chamber 25. Each pressure balancing plate 28 is movably connected to the upper vacuum chamber 25 through an elastic member 29. An adsorption plate 210 is installed on the upper surface of the pressure balancing plate 28. The pressure balancing plates 28 are installed on the inner wall of the upper vacuum chamber 25 in an inclined manner. The end of the pressure balancing plate 28 away from the upper vacuum chamber 25 is initially located above the vacuum bag film body 13. The elastic member 29 is made of rubber material as a whole, and the adsorption plate 210 is made of activated carbon material as a whole.

[0040] Specifically, since the pressure balance plate 28 is connected to the inner wall of the upper vacuum chamber 25 through the elastic member 29 made of rubber, this connection method enables the pressure balance plate 28 to automatically adjust the distance from the surface of the vacuum bag film body 13 according to the size of the upper and lower pressure differences. Since the rubber elastic member 29 is elastic, according to Hooke's law, when the upper and lower pressure differences of the vacuum bag film body 13 change, a force will be generated on the pressure balance plate 28. This force will cause the rubber elastic member 29 to deform, thereby driving the pressure balance plate 28 to move. First, when the negative pressure below the conveying table is too large, the vacuum bag film body 13 is excessively adsorbed on the conveying table. At this time, the pressure balance plate 28 tilts downward. According to the principle of gas pressure At this time, reducing the overlapping area between the diffuser 26 and the vacuum bag body 13 is equivalent to reducing the effective area of gas pressure on the upper surface of the vacuum bag body 13. Since the total amount of gas remains unchanged, the gas pressure acting on the upper surface of the vacuum bag body 13 will increase in this case, thereby increasing the pressure on the upper surface of the vacuum bag body 13, balancing the pressure difference between the upper and lower pressures of the vacuum bag body 13, and preventing damage due to excessive adsorption. Secondly, when the negative pressure below the conveying table is insufficient, the pressure balancing plate 28 tilts upward until it becomes parallel to the vacuum bag body 13, thereby blocking some of the gas discharged from the diffuser 26 and reducing the total amount of gas acting on the upper surface of the vacuum bag body 13. When the force-bearing area remains unchanged and the pressure balancing plate 28 is parallel to the vacuum bag body 13, the gas action area is relatively stable. The reduced total amount of gas means a decrease in pressure, thereby reducing the pressure on the upper surface of the vacuum bag body 13, preventing the vacuum bag body 13 from being effectively adsorbed on the conveying table due to an insufficient pressure difference between the upper and lower pressures.

[0041] Example 2: Based on Example 1, please refer to Figures 9 to 11 As shown, a negative pressure gradual transition mechanism 3 is provided inside the conveying module 11. The negative pressure gradual transition mechanism 3 is used to buffer the negative pressure on the entire vacuum bag film body 13. The negative pressure gradual transition mechanism 3 includes a transmission assembly 31 symmetrically mounted on the side wall of the conveying module 11. The outer wall of the transmission assembly 31 is evenly mounted with gasket protrusions 32. A through-hole plate 33 is mounted below the transmission assembly 31. It should be noted that the transmission assembly 31 as a whole is composed of a driven shaft and a transmission belt. The transmission assembly 31 is fixedly connected to the gasket protrusion 32, and the gasket protrusion 32 is an incomplete arc as a whole. Circular holes are evenly opened on the surface of the through-hole plate 33. The aperture of the circular holes decreases from left to right, and the gasket protrusion 32 and the circular holes on the surface of the through-hole plate 33 are in the same vertical plane.

[0042] Specifically, during the transportation process, for the vacuum bag film body 13, the negative pressure adsorption force is equivalent to the external force acting on it. When it suddenly enters the normal environment from the negative pressure environment, the adsorption force suddenly disappears, which means that the stress will suddenly change. Since the device introduces a through-hole plate 33 at the output end of the conveying table, and circular holes are evenly opened on the surface of the through-hole plate 33, and the aperture of the circular holes is designed to gradually decrease from the negative pressure environment side to the normal environment side, therefore, as the vacuum bag film body 13 is transported and moved, the adsorption force it receives itself also gradually decreases, thereby effectively avoiding local deformation of the vacuum bag film body 13 caused by sudden stress changes. In addition, the effect of stress is gradually alleviated, which can ensure that the strain distribution inside the vacuum bag film body 13 is more uniform when it is subjected to uniformly changing forces. This uniform strain helps to maintain the original shape of the vacuum bag film body 13.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional auxiliary conveying device for vacuum bag film production, used for conveying a vacuum bag film body (13), comprising a machine frame (1), a conveying module (11) installed above the machine frame (1), and a vacuum module (12) installed below the conveying module (11), characterized in that: A double-sided airflow circulation mechanism (2) is provided on the outside of the conveying module (11), and the double-sided airflow circulation mechanism (2) is used to circulate airflow to perform double-sided positioning of the vacuum bag film body (13); The double-sided airflow circulation mechanism (2) comprises a lower vacuum chamber (21) installed below the conveying module (11), two sides of the vacuum module (12) are symmetrically connected with connecting pipes (23), the interior of the connecting pipes (23) is evenly connected with branch guide pipes (24), the outer wall of the branch guide pipes (24) away from the connecting pipe (23) is fixedly connected to the upper vacuum chamber (25), and the end of the branch guide pipes (24) away from the connecting pipe (23) is connected to a diffusion cylinder (26); A plurality of pressure balancing plates (28) are symmetrically installed inside the upper vacuum chamber (25), each of the pressure balancing plates (28) is movably connected to the upper vacuum chamber (25) via an elastic member (29), and an adsorption plate (210) is installed on the upper surface of each pressure balancing plate (28).

2. The multifunctional auxiliary conveying device for vacuum bag film production according to claim 1, characterized in that: The lower vacuum chamber (21) is trapezoidal in shape as a whole, and the upper vacuum chamber (25) is rectangular in shape as a whole. The lower vacuum chamber (21) and the upper vacuum chamber (25) are fixedly connected to the lower surface and the upper surface of the conveying module (11) respectively. The branch guide tube (24) below the conveying module (11) remains parallel to the inclined side wall of the lower vacuum chamber (21).

3. The multifunctional auxiliary conveying device for vacuum bag film production according to claim 1, characterized in that: An airflow converging plate group (22) is installed inside the lower vacuum chamber (21). The airflow converging plate group (22) is composed of a combination of no less than six plane plates. Each group of three plane plates is symmetrically distributed with the center line of the lower vacuum chamber (21) as a reference, and the plane plates in each group have increasing inclination angles from far to near.

4. The multifunctional auxiliary conveying device for vacuum bag film production according to claim 1, characterized in that: The diffuser tube (26) is generally in the shape of a funnel that is wide at the top and narrow at the bottom. A diverter frame (27) is fixedly connected to the output end of the diffuser tube (26). The diverter frame (27) is generally in the shape of a cross, and the top of the diverter frame (27) is in the shape of an oblique angle protrusion.

5. The multifunctional auxiliary conveying device for vacuum bag film production according to claim 1, characterized in that: The pressure balancing plates (28) are all installed on the inner wall of the upper vacuum chamber (25) in an inclined manner, and the end of the pressure balancing plates (28) away from the upper vacuum chamber (25) is initially located above the vacuum bag film body (13). The elastic member (29) is entirely made of rubber material, and the adsorption plate (210) is entirely made of activated carbon material.

6. The multifunctional auxiliary conveying device for vacuum bag film production according to claim 1, characterized in that: A negative pressure gradual transition mechanism (3) is provided inside the conveying module (11), and the negative pressure gradual transition mechanism (3) is used to buffer the negative pressure effect on the vacuum bag film body (13) as a whole. The negative pressure gradual transition mechanism (3) includes a transmission component (31) symmetrically installed on the side wall of the conveying module (11), the outer wall of the transmission component (31) is evenly installed with gasket protrusions (32), and a through-hole plate (33) is installed below the transmission component (31).

7. The multifunctional auxiliary conveying device for vacuum bag film production according to claim 6, characterized in that: The transmission assembly (31) is composed of a driven shaft and a transmission belt. The transmission assembly (31) is fixedly connected to the gasket protrusion (32), and the gasket protrusion (32) is in an incomplete arc shape.

8. The multifunctional auxiliary conveying device for vacuum bag film production according to claim 6, characterized in that: The surface of the through-hole plate (33) is uniformly penetrated with circular holes, the apertures of the circular holes decrease from left to right, and the gasket protrusions (32) and the circular holes on the surface of the through-hole plate (33) are located in the same vertical plane.

9. The multifunctional auxiliary conveying device for vacuum bag film production according to claim 6, characterized in that: The conveying module (11) mainly comprises a conveying table, a driving shaft and a driving motor, and the driven shaft in the transmission assembly (31) maintains a transmission connection with the driving shaft in the conveying module (11) via a transmission belt.

10. The multifunctional auxiliary conveying device for vacuum bag film production according to claim 1, characterized in that: The vacuum module (12) mainly comprises a vacuum pump and a pressure valve, the lower vacuum chamber (21) is connected to the input end of the vacuum pump in the vacuum module (12), and the connecting pipe (23) is connected to the output end of the vacuum pump in the vacuum module (12).

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