A valve packing device and a packing process thereof

Abstract

The application relates to a valve packaging device and a packaging process thereof, and relates to the technical field of packaging devices; the device comprises a rack for bearing a packaging bag, a conveying belt for conveying the packaging bag is arranged on the rack; one end of the rack is provided with a positioning plate abutting against the packaging bag, a binding assembly for binding a bag opening of the packaging bag is arranged on the side, away from the rack, of the positioning plate, a sealing assembly for sealing and cutting the bag opening of the packaging bag is arranged on the rack, and a heat sealing assembly for heat-shrinking the packaging bag is arranged on the rack; the application has the effect of conveniently packaging valves.

Description

Technical Field

[0001] This application relates to the field of packaging equipment technology, and in particular to a packaging device for valves and its packaging process. Background Technology

[0002] A valve is a pipeline accessory used to open and close pipelines, control flow direction, and regulate the transported medium. Typically, after production, valves require sealing; for example, they are wrapped in plastic film or packaging bags to provide protection against contamination, moisture, and dust during transportation.

[0003] In related technologies, one valve packaging process involves workers opening up a plastic packaging bag, placing the valve (or other workpiece awaiting packaging) into the opened plastic packaging bag, and then binding and sealing it.

[0004] Regarding the aforementioned technologies, the inventors discovered that the traditional manual binding and sealing method is very cumbersome and time-consuming, and therefore needs to be improved. Summary of the Invention

[0005] To improve the time-consuming and labor-intensive problem of manual bundling and sealing, this application provides a sealing device for valves and its sealing process.

[0006] Firstly, the valve sealing device provided in this application adopts the following technical solution:

[0007] A valve sealing device includes a frame for carrying a packaging bag, a conveyor belt for transporting the packaging bag on the frame; a positioning plate abutting against the packaging bag is provided at one end of the frame, a restraining component for restraining the opening of the packaging bag is provided on the side of the positioning plate away from the frame, a sealing component for closing and cutting the opening of the packaging bag is provided on the frame, and a heat sealing component for heat-shrinkable packaging bags is provided on the frame.

[0008] By adopting the above technical solution, the positioning plate positions the packaging bag and prevents the packaging bag containing the valve from leaving the frame, the binding component quickly binds the opening of the packaging bag, the sealing component seals the opening of the packaging bag and separates the excess opening from the sealed bag body, and finally the sealed packaging bag is transferred to the heat sealing component by the conveyor belt, so that the packaging bag is heat-shrinkably and tightly attached to its internal valve body, realizing convenient sealing of the valve body and reducing manual operation processes and labor.

[0009] Preferably, the restraint assembly includes an installation channel, a fan, two sets of rotating rollers, anti-slip bristles, and a drive component; the installation channel is located on the side of the positioning plate away from the frame, the fan is located inside the installation channel to guide the opening of the packaging bag into the installation channel; both rotating rollers are rotatably arranged inside the installation channel, and the rotating rollers are located on the side of the fan facing the frame; the anti-slip bristles are arranged on the peripheral wall of each set of rotating rollers to contact the packaging bag; the drive component is located on the installation channel to drive the two sets of rotating rollers to rotate in opposite directions.

[0010] By adopting the above technical solution, the exhaust fan guides the airflow and applies traction to the opening of the packaging bag, causing the soft opening of the packaging bag to move towards the inside of the installation channel; the drive unit drives two sets of rotating rollers to move in opposite directions, and the rotating rollers use anti-slip bristles to resist the packaging bag, so that the opening of the packaging bag is stably bound to the inside of the installation channel, thereby facilitating the subsequent sealing of the packaging bag and the removal of excess bag opening.

[0011] Preferably, the installation channel is equipped with an intercepting mesh frame for intercepting packaging bag waste. The side wall of the intercepting mesh frame facing the rotating roller is provided with two sets of limiting plates, and the side walls of the two limiting plates that are far apart from each other are in contact with the side wall of the installation channel. The side wall of the installation channel is provided with a passage for the intercepting mesh frame and the limiting plates to pass through, and the top of the intercepting mesh frame is provided with a handle.

[0012] By adopting the above technical solution, the interception net blocks the opening of the cut packaging bag, reducing the phenomenon of packaging bags interfering with the operation of the exhaust fan. By pulling the handle, the user can gradually pull the interception net frame through the passage and away from the installation channel. Two sets of limiting plates are used to retain the intercepted packaging bag waste in the area enclosed by the limiting plates and the interception net frame, so as to facilitate the cleaning of packaging bag waste inside the installation channel. In addition, when the interception net frame is inside the installation channel, the limiting plates can close the passage, reducing the phenomenon of packaging bag waste inside the installation channel being discharged through the passage.

[0013] Preferably, the sealing assembly includes a positioning frame, a movable frame, a knife holder, a heat sealing knife, and a lifting component; the positioning frame is disposed at the end of the frame facing the positioning plate, and the positioning plate is connected to the positioning frame; the movable frame is slidably disposed on the positioning frame, the knife holder is disposed on the movable frame, and the heat sealing knife is disposed on the side wall of the movable frame facing the knife holder; the lifting component is disposed on the positioning frame to drive the movable frame closer to or away from the knife holder.

[0014] By adopting the above technical solution, when the binding component binds the opening of the packaging bag, the opening of the packaging bag passes through the gap between the knife holder and the heat sealing knife; the output end of the control lifting component extends, so that the moving frame drives the heat sealing knife to gradually approach the knife holder. The heat sealing knife presses the body of the packaging bag stably onto the knife holder. The heat sealing knife uses its heat-melting effect to seal the packaging bag and cuts the opening and body of the packaging bag, reducing the excess part of the outer packaging bag of the valve body, so as to provide a tighter and more aesthetically pleasing guarantee for the valve body.

[0015] Preferably, the heat-sealing assembly includes a hot air chamber, a ventilation duct, an air inlet duct, an air inlet fan, a heating element, and an air guide plate. The hot air chamber is mounted on a frame, and the conveyor belt passes through the hot air chamber. The ventilation duct is fitted onto the hot air chamber, and the hot air chamber has several sets of ventilation openings that communicate with the interior of the ventilation duct, with all the ventilation openings spaced apart along the length of the ventilation duct. The air inlet duct is connected to the ventilation duct, and the air inlet fan is located inside the air inlet duct to blow airflow into the air inlet duct. The heating element is located inside the air inlet duct to heat the airflow inside the air inlet duct. The air guide plate is inclined at the connection between the ventilation duct and the air inlet duct to guide the airflow to disperse into the interior of the ventilation duct.

[0016] By adopting the above technical solution, the conveyor belt transports the valve body wrapped in the packaging bag to the hot air chamber. The heating element heats the gas passing through the air inlet pipe. The air inlet fan guides the external gas to gradually pass through the air inlet pipe, ventilation pipe and vent, and enter the hot air chamber to heat-bake the packaging bag on the outside of the valve body inside the hot air chamber. This causes the packaging bag to gradually shrink and tightly adhere to the valve body, realizing convenient sealing of the valve body and improving the aesthetics of the valve body sealing.

[0017] Preferably, the frame is rotatably provided with a support plate for carrying packaging bags at the end facing the positioning plate, and the support plate is located between the positioning plate and the conveyor belt; a telescopic member is rotatably provided between the support plate and the frame, and the telescopic member is used to drive the support plate to rotate in a direction away from the positioning plate.

[0018] By adopting the above technical solution, the newly loaded packaging bags and valve bodies are temporarily held on the support plate to facilitate the sealing of the packaging bags by the binding component and the sealing component. After the packaging bags are sealed, the output end of the control telescopic component extends, causing the end of the support plate near the positioning plate to flip towards the direction of the conveyor belt, so as to pour the sealed packaging bags and valve bodies onto the conveyor belt, thereby facilitating the transfer of the packaging bags and valve bodies by the conveyor belt.

[0019] Preferably, the support plate is provided with a positioning component for positioning the packaging bag, and the end of the frame is provided with a punching component for punching holes in the packaging bag.

[0020] By adopting the above technical solution, the positioning component positions the newly loaded packaging bag and valve body to facilitate the processing of the packaging bag; the punching component punches holes in the packaging bag to allow air inside the bag to escape during the subsequent heat shrinking process, reducing the need for manual punching of the packaging bag, thereby ensuring stable heat shrinking of the packaging bag and wrapping of the valve body.

[0021] Preferably, the positioning assembly includes two sets of push plates, several sets of guide rollers, and two sets of pushers; both push plates are slidably disposed on the support plate, all the guide rollers are rotatably disposed on the side walls of the two sets of push plates facing each other, and the pushers are disposed on opposite sides of the push plates, and the pushers are respectively disposed in one-to-one correspondence with the push plates, so as to drive the two sets of push plates to move closer to each other or further away from each other.

[0022] By adopting the above technical solution, the output end of the pusher is extended, so that the two sets of push plates gradually approach each other. The push plates push the packaging bag and valve body to achieve the positioning of the packaging bag and valve body. The guide roller reduces the frictional resistance between the push plate and the packaging bag, thereby facilitating the transfer of the packaging bag by the carrier plate in an inclined state.

[0023] Preferably, the punching assembly includes an extension plate, several sets of punching pins, adjusting nuts, an elastic element, and an anti-detachment ring; the extension plate is disposed on the side wall of the movable frame facing the machine frame, all the punching pins are inserted through the extension plate, the adjusting nuts are threaded to the end of each set of punching pins away from the support plate, and each set of adjusting nuts can abut against the side wall of the extension plate away from the support plate; the anti-detachment ring is disposed on each set of punching pins, and the anti-detachment ring is located on the side of the extension plate facing the support plate; the elastic element is sleeved on each set of punching pins, one end of the elastic element abuts against the extension plate, the other end of the elastic element abuts against the anti-detachment ring, and the extension and retraction direction of the elastic element is parallel to the sliding direction of the punching pin.

[0024] By adopting the above technical solution, as the output end of the lifting component drives the moving frame to gradually approach the bearing plate, the moving frame drives the extension plate and the punching needle to gradually approach the packaging bag. By using the punching needle to puncture the packaging bag, the packaging bag is punched, reducing the need for manual punching and ensuring the stable heat shrinking of the packaging bag.

[0025] During the process of the punch needle piercing the packaging bag, when the punch needle comes into contact with the valve body, the elastic element undergoes elastic deformation under pressure, which reduces the hard collision between the punch needle and the valve, thereby reducing the damage to the valve caused by the punch needle.

[0026] By rotating the adjusting nut, the distance between the anti-detachment block and the extension plate is adjusted, thereby adjusting the length of the elastic element and the elastic force provided by the elastic element to the punching needle, so that the punching needle can pierce packaging bags of different thicknesses.

[0027] Secondly,

[0028] This application provides a packaging process for a valve packaging device, comprising the following steps:

[0029] Feeding: Place the packaging bag containing the valve on the frame and abut it against the positioning plate;

[0030] Restraint: Using restraint components to restrain the opening of the packaging bag;

[0031] Sealing: Using sealing components to seal and cut the opening of the packaging bag;

[0032] Heat sealing: Using heat sealing components to heat-dry the sealed packaging bag.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. By setting up a binding component to quickly bind the opening of the packaging bag, the sealing component to close the opening of the packaging bag and cut off the excess bag opening, and finally through the conveyor belt and heat sealing component, the packaging bag is heat-shrinked and tightly attached to its internal valve body, realizing convenient sealing of the valve body and reducing manual operation process and labor.

[0035] 2. By setting up a support plate, a holding point is provided for the newly loaded packaging bags and valve bodies, so that the packaging bags can be sealed by the binding component and the sealing component; by using the drive of the telescopic component, the support plate tilts the sealed packaging bags and valve bodies onto the conveyor belt, thereby facilitating the transfer of packaging bags and valve bodies by the conveyor belt.

[0036] 3. The positioning component is used to position the freshly loaded packaging bag and valve body to facilitate the processing of the packaging bag; the punching component punches holes in the packaging bag to allow air to escape from the bag during the subsequent heat shrinking process, reducing the need for manual punching of the packaging bag, thereby ensuring stable heat shrinking of the packaging bag and wrapping of the valve body. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of a valve packaging device according to an embodiment of this application.

[0038] Figure 2 It is a structural diagram used to illustrate the connection relationship between the support plate and the frame.

[0039] Figure 3 It is a structural diagram used to illustrate the connection relationship between the frame and the sealing assembly.

[0040] Figure 4 It is a cross-sectional schematic diagram used to illustrate the connection relationship between the restraint component and the sealing component.

[0041] Figure 5 It is a cross-sectional schematic diagram used to illustrate the connection relationship between the frame and the heat sealing assembly.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Frame; 11. Conveyor Belt; 12. Positioning Plate; 13. Bearing Plate; 14. Telescopic Component; 2. Restraint Assembly; 21. Installation Channel; 211. Passage Port; 22. Exhaust Fan; 23. Rotating Roller; 24. Anti-slip Brush; 25. Drive Component; 3. Sealing Assembly; 31. Positioning Frame; 32. Moving Frame; 33. Knife Holder; 34. Heat Sealing Knife; 35. Lifting Component; 4. Heat Sealing Assembly; 41. Hot Air Chamber; 411. Ventilation Port; 42. Ventilation Pipe; 43. Air Inlet Pipe; 44. Air Inlet Fan; 45. Heating Component; 46. Air Guide Plate; 5. Interception Net Frame; 51. Limiting Plate; 52. Handle; 6. Positioning Assembly; 61. Push Plate; 62. Guide Roller; 63. Push Component; 7. Drilling Assembly; 71. Extension Plate; 72. Drilling Needle; 73. Adjusting Nut; 74. Elastic Component; 75. Anti-detachment Ring. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0045] This application discloses a valve packaging device and its packaging process for convenient valve packaging.

[0046] Reference Figure 1 and Figure 2 A valve packaging device includes a frame 1 placed on the ground. One end of the frame 1 along its length is rotatably connected to a support plate 13 via a pivot for supporting packaging bags containing valves. A conveyor belt 11 is rotatably mounted on the frame 1, located to one side of the support plate 13. A telescopic member 14 is rotatably connected to the end of the support plate 13 away from the conveyor belt 11 and the frame 1 via a pivot. In this embodiment, the telescopic member 14 can be a telescopic cylinder. When the output end of the telescopic cylinder extends, it drives the support plate 13 to rotate towards the conveyor belt 11, thereby guiding the packaging bags on the support plate 13 onto the conveyor belt 11.

[0047] Reference Figure 1 and Figure 3A sealing assembly 3 is installed on the ground on the side of the support plate 13 away from the conveyor belt 11. The sealing assembly 3 includes a positioning frame 31, a moving frame 32, a knife holder 33, a heat sealing knife 34, and a lifting component 35. The positioning frame 31 is placed on the ground at the end of the frame 1, and the positioning frame 31 is located on the side of the support plate 13 away from the conveyor belt 11. A positioning plate 12 is fixedly installed on the positioning frame 31. The side wall of the positioning plate 12 facing the support plate 13 can abut against the packaging bag. The knife holder 33 is fixedly connected to the top of the positioning plate 12.

[0048] Reference Figure 3 and Figure 4 In this embodiment, the lifting component 35 is a lifting cylinder. The lifting component 35 is fixedly connected to the top of the positioning frame 31, and the moving frame 32 is fixedly connected to the output end of the lifting component 35. In this embodiment, the heat sealing knife 34 can be a hot melt knife or an electrothermal knife. The heat sealing knife 34 is fixedly connected to the side wall of the moving frame 32 facing the knife holder 33. By extending and retracting the output end of the lifting component 35, the moving frame 32 and the heat sealing knife 34 can be driven to move closer to or further away from the knife holder 33, so that the opening of the packaging bag can be clamped and heat-sealed by the heat sealing knife 34 and the knife holder 33, thereby realizing the heat sealing and cutting of the packaging bag.

[0049] Reference Figure 3 and Figure 4 A restraint assembly 2 is installed on the side of the positioning frame 31 away from the frame 1. The restraint assembly 2 includes an installation channel 21, an exhaust fan 22, two sets of rotating rollers 23, anti-slip bristles 24, and a drive component 25. The installation channel 21 is fixedly connected to the side wall of the positioning frame 31 away from the frame 1, and the installation channel 21 is a pipe that runs through both ends. The exhaust fan 22 is fixedly mounted at the end of the installation channel 21 away from the positioning frame 31. The exhaust fan 22 is used to guide the opening of the packaging bag toward the interior of the installation channel 21 through airflow.

[0050] Reference Figure 3 and Figure 4 Both sets of rotating rollers 23 are rotatably connected inside the mounting channel 21. Both sets of rotating rollers 23 are located on the side of the exhaust fan 22 facing the positioning frame 31, and a gap is left between the two sets of rotating rollers 23 for the bag opening to pass through. Anti-slip bristles 24 are glued to the end of each set of rotating rollers 23, and the anti-slip bristles 24 can abut against the packaging bag. In this embodiment, the driving component 25 is fixedly connected to the mounting channel 21. The driving component 25 can be a gear set driven by a motor, and the gear set is fixedly sleeved on the two sets of rotating rollers 23 to drive the two sets of rotating rollers 23 to rotate towards each other, thereby guiding the bag opening of the packaging bag towards the exhaust fan 22, thus achieving the binding of the bag opening.

[0051] Reference Figure 3 and Figure 4An opening 211 is provided through the side wall of the installation channel 21. An intercepting mesh frame 5 is slidably inserted into the installation channel 21 within the opening 211. Two sets of limiting plates 51 are welded and fixed to the side wall of the intercepting mesh frame 5 facing the rotating roller 23. One set of limiting plates 51 is adapted to the inner side wall of the opening 211, and the side wall of the other set of limiting plates 51 is in contact with the inner side wall of the installation channel 21. A handle 52 is welded and fixed to the side wall of the intercepting mesh frame 5 to facilitate the user's movement of the intercepting mesh frame 5.

[0052] Reference Figure 1 and Figure 5 A heat-sealing assembly 4 is installed on the frame 1 for heat-shrinking packaging bags to tightly wrap around valves. The heat-sealing assembly 4 includes a hot air chamber 41, a ventilation duct 42, an air inlet duct 43, an air inlet fan 44, a heating element 45, and an air guide plate 46; the hot air chamber 41 is fixedly covered by the frame 1, and a conveyor belt 11 passes through the hot air chamber 41 for transporting packaging bags and valves through the hot air chamber 41.

[0053] Reference Figure 1 and Figure 5 The ventilation pipe 42 is fixedly sleeved on the outer wall of the hot air chamber 41. Several sets of ventilation openings 411 that communicate with the inside of the ventilation pipe 42 are opened through the side wall of the hot air chamber 41, and all the ventilation openings 411 are distributed at intervals along the length of the ventilation pipe 42.

[0054] Reference Figure 1 and Figure 5 The air inlet pipe 43 is fixedly connected to the top of the ventilation pipe 42, and the air intake fan 44 is fixedly mounted inside the air inlet pipe 43 to blow air into the ventilation pipe 42. In this embodiment, the heating element 45 is an electric heating wire, which is fixedly connected inside the air inlet pipe 43 to heat the gas inside the air inlet pipe 43, thereby increasing the gas temperature inside the hot air chamber 41.

[0055] Reference Figure 1 and Figure 5 The air guide plate 46 is inclinedly welded to the connection between the air inlet pipe 43 and the ventilation pipe 42. The two sets of air guide plates 46 are distributed opposite to each other on both sides of the heating element 45. A gap is left between the two sets of air guide plates 46 for gas to pass through, and the ends of the two sets of air guide plates 46 away from the heating element 45 are inclined in a direction away from each other, so as to disperse the airflow inside the air inlet pipe 43 into the ventilation pipe 42.

[0056] Reference Figure 1 and Figure 2A positioning assembly 6 is installed on the support plate 13 for positioning the packaging bag and valve. The positioning assembly 6 includes two sets of push plates 61, several sets of guide rollers 62, and two sets of pushers 63; in this embodiment, the pushers 63 are push cylinders. The two sets of pushers 63 are distributed opposite each other on both sides of the support plate 13 in the width direction. The push plates 61 and pushers 63 are respectively arranged one-to-one. Each set of push plates 61 is fixedly connected to the output end of the corresponding pusher 63, so that the extension and retraction of the output end of the pusher 63 can drive the two sets of push plates 61 to move closer or further apart. All the guide rollers 62 are rotatably connected to the side walls of the two sets of push plates 61 that are close to each other, so as to abut against the packaging bag.

[0057] Reference Figure 3 and Figure 4 A punching assembly 7 is installed on the side wall of the movable frame 32 facing the frame 1 for punching holes in packaging bags. The punching assembly 7 includes an extension plate 71, several sets of punching needles 72, an adjusting nut 73, an elastic element 74, and an anti-detachment ring 75. The extension plate 71 is fixedly connected to the side wall of the movable frame 32 facing the support plate 13. All the punching needles 72 are interposed at intervals on the extension plate 71, and the tips of each set of punching needles 72 face the support plate 13.

[0058] Reference Figure 3 and Figure 4 In this embodiment, the punching pin 72, adjusting nut 73, elastic element 74 and anti-detachment ring 75 are respectively provided one-to-one. Each set of adjusting nuts 73 is threadedly connected to the corresponding punching pin 72, and each set of adjusting nuts 73 abuts against the side wall of the extension plate 71 away from the bearing plate 13, so as to restrict the punching pin 72 from completely passing through the extension plate 71.

[0059] Reference Figure 3 and Figure 4 Each set of anti-detachment rings 75 is fixedly sleeved on the corresponding punching pin 72, and all anti-detachment rings 75 are located on the side of the extension plate 71 facing the support plate 13. In this embodiment, the elastic element 74 is a spring. Each set of elastic elements 74 is sleeved on the corresponding punching pin 72, one end of the elastic element 74 abuts against the anti-detachment ring 75, and the other end of the elastic element 74 abuts against the side wall of the extension plate 71 facing the anti-detachment ring 75, thereby using its own elastic force to drive the punching pin 72 to move towards the support plate 13.

[0060] The implementation principle of a valve sealing device according to an embodiment of this application is as follows:

[0061] The packaging bag with the valve is placed on the support plate 13. The exhaust fan 22 and the drive unit 25 are started. The exhaust fan 22 guides the opening of the packaging bag toward the installation channel 21 through airflow. The drive unit 25 drives the two sets of rotating rollers 23 to rotate, so that the anti-slip bristles 24 pull the opening of the packaging bag into the installation channel 21, thereby restraining the opening of the packaging bag.

[0062] The output of the control lifting component 35 causes the moving frame 32 to gradually move the heat sealing knife 34 and the extension plate 71 closer to the packaging bag. The heat sealing knife 34 presses the packaging bag onto the knife holder 33, heat-sealing the packaging bag, and separating the bag opening from the bag body. The punching needle 72 on the extension plate 71 punctures the packaging bag, thus performing a perforation process.

[0063] The output end of the control telescopic component 14 extends, causing the carrier plate 13 to tilt the packaging bag onto the conveyor belt 11. The conveyor belt 11 transfers the packaging bag into the hot air chamber 41, and the intake fan 44 and heating element 45 are activated to increase the temperature inside the hot air chamber 41, causing the packaging bag to gradually shrink and wrap the valve body inside, ultimately achieving convenient sealing of the valve and reducing the manual operation process.

[0064] This application also discloses a packaging process for a valve packaging device, including the following steps:

[0065] Feeding: Place the valve inside the packaging bag, then place the packaging bag containing the valve on the frame 1 and abut it against the positioning plate 12;

[0066] Restraint: The positioning plate 12 abuts against the body of the packaging bag, and the restraint component 2 is used to pull and restrain the opening of the packaging bag;

[0067] Sealing: Use sealing component 3 to seal the opening of the packaging bag, and then cut the sealed part and the opening part of the packaging bag.

[0068] Heat sealing: The heat sealing component 4 is used to heat-bake the sealed packaging bag, causing the packaging bag to shrink and tightly wrap around the valve.

[0069] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A valve sealing device, characterized in that: The system includes a frame (1) for carrying packaging bags, and a conveyor belt (11) for transporting the packaging bags is provided on the frame (1); a positioning plate (12) that abuts against the packaging bags is provided at one end of the frame (1); a binding assembly (2) for binding the opening of the packaging bags is provided on the side of the positioning plate (12) away from the frame (1); a sealing assembly (3) for closing and cutting the opening of the packaging bags is provided on the frame (1); and a heat sealing assembly (4) for heat-shrinkable packaging bags is provided on the frame (1). The restraint assembly (2) includes an installation channel (21), a fan (22), two sets of rotating rollers (23), anti-slip bristles (24), and a drive unit (25). The installation channel (21) is located on the side of the positioning plate (12) away from the frame (1). The fan (22) is located inside the installation channel (21) to guide the opening of the packaging bag into the installation channel (21). Both rotating rollers (23) are rotatably located inside the installation channel (21), and the rotating rollers (23) are located on the side of the fan (22) facing the frame (1). The anti-slip bristles (24) are located on the peripheral wall of each set of rotating rollers (23) to contact the packaging bag. The drive unit (25) is located on the installation channel (21) to drive the two sets of rotating rollers (23) to rotate in opposite directions. The installation channel (21) is slidably equipped with an interception net frame (5) for intercepting packaging bag waste. The side wall of the interception net frame (5) facing the rotating roller (23) is provided with two sets of limiting plates (51), and the side walls of the two limiting plates (51) that are far apart from each other are in contact with the side wall of the installation channel (21). A passage opening (211) is provided through the side wall of the installation channel (21) for the interception net frame (5) and the limiting plates (51) to pass through. A handle (52) is provided on the top of the interception net frame (5). The sealing assembly (3) includes a positioning frame (31), a movable frame (32), a knife holder (33), a heat sealing knife (34), and a lifting component (35); the positioning frame (31) is located at the end of the frame (1) facing the positioning plate (12), and the positioning plate (12) is connected to the positioning frame (31); the movable frame (32) is slidably mounted on the positioning frame (31), the knife holder (33) is mounted on the movable frame (32), and the heat sealing knife (34) is mounted on the side wall of the movable frame (32) facing the knife holder (33); the lifting component (35) is mounted on the positioning frame (31) to drive the movable frame (32) closer to or away from the knife holder (33); The frame (1) is rotatably provided with a support plate (13) for carrying packaging bags at the end facing the positioning plate (12), and the support plate (13) is located between the positioning plate (12) and the conveyor belt (11); a telescopic member (14) is rotatably provided between the support plate (13) and the frame (1), and the telescopic member (14) is used to drive the support plate (13) to rotate in a direction away from the positioning plate (12).

2. The valve sealing device according to claim 1, characterized in that: The heat sealing assembly (4) includes a hot air chamber (41), a ventilation duct (42), an air inlet duct (43), an air inlet fan (44), a heating element (45), and an air guide plate (46); the hot air chamber (41) is mounted on the frame (1), and the conveyor belt (11) passes through the hot air chamber (41); the ventilation duct (42) is fitted onto the hot air chamber (41), and the hot air chamber (41) has several sets of ventilation openings (411) that communicate with the interior of the ventilation duct (42), and all the ventilation openings (411) are along the... The ventilation ducts (42) are spaced apart along their length; the air inlet duct (43) is connected to the ventilation duct (42); the air inlet fan (44) is located inside the air inlet duct (43) to blow air into the air inlet duct (43); the heating element (45) is located inside the air inlet duct (43) to heat the airflow inside the air inlet duct (43); the air guide plate (46) is inclinedly located at the connection between the ventilation duct (42) and the air inlet duct (43) to guide the airflow to disperse into the ventilation duct (42).

3. The valve sealing device according to claim 1, characterized in that: The support plate (13) is provided with a positioning component (6) for positioning the packaging bag, and the end of the frame (1) is provided with a punching component (7) for punching holes in the packaging bag.

4. A valve sealing device according to claim 3, characterized in that: The positioning component (6) includes two sets of push plates (61), several sets of guide rollers (62), and two sets of pushers (63); both push plates (61) are slidably disposed on the bearing plate (13), all the guide rollers (62) are rotatably disposed on the side walls facing each other of the two sets of push plates (61), and the pushers (63) are on both sides of the push plates (61), and the pushers (63) and push plates (61) are respectively arranged in a one-to-one correspondence, so as to drive the two sets of push plates (61) to move closer to each other or further away from each other.

5. A valve sealing device according to claim 3, characterized in that: The punching assembly (7) includes an extension plate (71), several sets of punching pins (72), an adjusting nut (73), an elastic element (74), and an anti-detachment ring (75). The extension plate (71) is disposed on the side wall of the movable frame (32) facing the machine frame (1). All the punching pins (72) are inserted through the extension plate (71). The adjusting nut (73) is threaded to the end of each set of punching pins (72) away from the bearing plate (13), and each set of adjusting nuts (73) can be separated from the extension plate (71). The sidewalls of the support plate (13) abut against each other; the anti-detachment ring (75) is disposed on each group of punching needles (72), and the anti-detachment ring (75) is located on the side of the extension plate (71) facing the support plate (13); the elastic element (74) is sleeved on each group of punching needles (72), one end of the elastic element (74) abuts against the extension plate (71), the other end of the elastic element (74) abuts against the anti-detachment ring (75), and the extension and retraction direction of the elastic element (74) is parallel to the sliding direction of the punching needles (72).

6. A packaging process for a valve packaging device as described in any one of claims 1-5, characterized in that: Includes the following steps: Feeding: Place the packaging bag containing the valve on the frame (1) and abut it against the positioning plate (12); Restraint: Use restraint components (2) to restrain the opening of the packaging bag; Sealing: Use sealing component (3) to seal and cut the opening of the packaging bag; Heat sealing: The sealed packaging bag is heated using the heat sealing component (4).

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