A film pulling and bag carrying mechanism

Abstract

The application discloses a film pulling and bag carrying mechanism, which comprises a film supplying and cutting device, a film pulling and bag making device and a bag carrying device. The film pulling and bag making device is located at a film outlet of the film supplying and cutting device, and the bag carrying device is located at a side of the film pulling and bag making device. The film supplying and cutting device supplies bag making film material, the film pulling and bag making device pulls out the bag making film material from the film outlet, the film supplying and cutting device cuts the bag making film material and seals edges to make a film bag, the bag carrying device adsorbs both sides of the film bag, opens a bag opening and carries the film bag to a preset position, and meanwhile, the film pulling and bag making device returns to the film outlet to pull out the film again. The film pulling and bag carrying mechanism is used for processing the bag making film material, improves the processing efficiency of the bag making film material, avoids the need of fixing the film material by a fixing device after the film is pulled to a set position by a film pulling rod in the prior art, and the film pulling rod can be returned to the original position before the film is cut and sealed, so that the waiting time of the film pulling rod is relatively long during the resetting process, and the user experience is improved.

Description

Technical Field

[0001] This invention relates to the field of packaging machine equipment technology, and in particular to a film-pulling and bag-carrying mechanism. Background Technology

[0002] Plastic sealing film is commonly used in packaging boxes for electronic products, pharmaceuticals, cosmetics, etc., to prevent moisture, dust, and fading. During the packaging process, a film-pulling and bag-handling mechanism is generally used to heat-seal the film material into a film bag with one end open, making it convenient for products to be put into the bag.

[0003] The existing film-pulling and bag-carrying mechanism uses a film-pulling rod to pull the bag-making film material from the film feeding device to a set position. After the film-clamping cylinder clamps the bag-making film material, the film-pulling rod resets, and the film-cutting device heat-cuts and seals the bag-making film material to make a film bag. The film-pulling rod needs to reset once in each bag-making process, which takes too long and results in low efficiency of film-pulling and bag-carrying.

[0004] Therefore, existing technologies still need to be improved and enhanced. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a film pulling and bag moving mechanism, which aims to solve the problem that when the film pulling and bag moving mechanism uses a film pulling rod to pull the film, it is necessary to wait for the film pulling rod to reset before the film material can be heat-cut and sealed, resulting in excessive waiting time and low processing efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A film-pulling and bag-carrying mechanism includes a film supply and sealing device, a film-pulling and bag-making device, and a bag-carrying device. The film-pulling and bag-making device is located at the film outlet of the film supply and sealing device, and the bag-carrying device is located on the side of the film-pulling and bag-making device. The film supply and sealing device supplies bag-making film material, the film-pulling and bag-making device pulls the bag-making film material out from the film outlet, the film supply and sealing device heat-cuts the bag-making film material and seals the edges to form a film bag, and the bag-carrying device adsorbs and opens the film bag from the top and bottom sides of the film bag and transports the film bag to a preset position. At the same time, the film-pulling and bag-making device returns to the film outlet to pull the film again.

[0008] The film-stretching bag-making device includes a film-stretching hook plate for spreading the bag-making film material, a film clamping assembly for clamping and fixing the bag-making film material, a film-stretching drive assembly, and a film-stretching transmission assembly. The film clamping assembly is mounted on the film-stretching assembly via a film-stretching fixing plate. The film-stretching hook plate hooks onto the bag-making film material, and the film clamping assembly clamps the side of the bag-making film material. The film-stretching drive assembly drives the film clamping assembly and the film-stretching hook plate to move away from the film outlet side via the film-stretching transmission assembly. The film-supplying and sealing device heat-cuts the bag-making film material and seals the edges to form a film bag.

[0009] The film clamping assembly includes a first film clamping assembly and a second film clamping assembly. The film stretching fixing plate is provided with an adjusting screw and an adjusting fixing seat for adjusting the distance between the first film clamping assembly and the second film clamping assembly. The adjusting screw is mounted on the film stretching fixing plate through the adjusting fixing seat. The first film clamping assembly is mounted on the adjusting screw. The adjusting fixing seat is located on one side of the second film clamping assembly. One end of the adjusting screw is provided with an adjusting handle for rotating the adjusting screw.

[0010] The film-pulling hook plate is located on the other side of the second film clamping assembly. The film-pulling hook plate is sequentially mounted on the film-pulling fixing plate via a film-pulling lifting cylinder and a transverse guide rail. The side of the film-pulling lifting cylinder is also provided with a film-pulling transverse cylinder for driving the film-pulling hook plate to move laterally.

[0011] The membrane stretching drive assembly includes a membrane stretching servo motor, which is sequentially mounted on a membrane stretching servo mounting base via a membrane stretching reducer and a coupling; the membrane stretching transmission assembly includes a membrane stretching synchronous pulley and a synchronous belt, which are connected to the coupling and mounted on the synchronous pulley and connected to the membrane stretching mounting plate.

[0012] The bag-handling device includes an opening component for opening the bag opening, a telescopic component for avoiding the film-forming bag-making device during bag handling, a bag-handling drive component, and a bag-handling transmission component. The telescopic component drives the opening component to move closer to the opening of the bag. The opening component attracts and opens the bag opening from the top and bottom sides of the bag. The telescopic component drives the bag back to its original position. The bag-handling transmission component, through the bag-handling drive component, drives the opening component to transport the bag to a preset position.

[0013] The bag opening assembly includes a first bag opening assembly for adsorbing the upper side of the film bag opening, a second bag opening assembly for adsorbing the lower side of the film bag opening, and a bag opening module for adjusting the distance between the first and second bag opening assemblies. The bag opening module is disposed on the telescopic assembly. The first bag opening assembly includes an upper bag opening fixing plate, an upper bag opening plate, and an upper bag opening cylinder. The upper bag opening plate is disposed on the bag opening module via the upper bag opening fixing plate, and the upper bag opening cylinder is disposed on the upper bag opening plate. The second bag opening assembly includes a lower bag opening fixing plate, a lower bag opening plate, and a lower bag opening cylinder. The lower bag opening plate is disposed on the telescopic assembly via the lower bag opening fixing plate.

[0014] The first and second bag opening components are also equipped with pneumatic components for blowing air into the film bag.

[0015] The film supply and sealing device includes a film feeding assembly, a sealing and cutting assembly, a film pressing assembly, and a lower knife assembly. The film feeding assembly is located on one side of the sealing and cutting assembly. The film feeding assembly supplies bag-making film material. The film pulling and bag-making device pulls the bag-making film material out from the film outlet. The film pressing assembly presses the bag-making film material. The sealing and cutting assembly and the lower knife assembly move relative to each other to heat-cut the bag-making film material and seal the edges to form a bag.

[0016] The side of the film pressing assembly is provided with a film opening assembly, which includes a film opening cylinder and upper and lower film opening plates. The output end of the film opening cylinder is connected to the upper and lower film opening plates. When the film pulling and bag making device pulls the bag making film material out of the film outlet, the film opening cylinder drives the upper and lower film opening plates to open up and down. When the film opening cylinder drives the upper and lower film opening plates to close, the sealing and cutting assembly cuts the bag making film material and seals the edges to form a film bag.

[0017] Compared to existing technologies, the present invention provides a film-pulling and bag-carrying mechanism, including a film supply and sealing device, a film-pulling and bag-making device, and a bag-carrying device. The film-pulling and bag-making device is located at the film outlet of the film supply and sealing device, and the bag-carrying device is located on the side of the film-pulling and bag-making device. The film supply and sealing device supplies bag-making film material, the film-pulling and bag-making device pulls the bag-making film material out from the film outlet, the film supply and sealing device heat-cuts the bag-making film material and seals the edges to form a film bag, and the bag-carrying device adsorbs and opens the film bag opening from the top and bottom sides of the film bag and transports the film bag to a preset position. At the same time, the film-pulling and bag-making device returns to the film outlet to pull the film again. This invention supplies bag-making film material through a film supply and sealing device. After the film material is pulled out by the film-pulling and bag-making device, the film supply and sealing device heat-cuts the film material and seals the edges to form a bag. The bag-transferring device then transports the bag to the product insertion position. The entire film-pulling and bag-transferring process is compact and rapid, improving the processing efficiency of the bag-making film material and saving user time. It avoids the problem in the prior art where, after the film is pulled to the set position by a film-pulling rod, a fixing device is needed to fix the film material, and the film-pulling rod must return to its original position before heat-cutting and sealing can be performed. The film-pulling rod reset process takes a long time, affecting processing efficiency and reducing user experience. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the film-pulling and bag-carrying mechanism provided by the present invention.

[0019] Figure 2 This is a schematic diagram of the film-pulling and bag-carrying mechanism provided by the present invention from another angle.

[0020] Figure 3 This is a structural schematic diagram of the film-pulling and bag-carrying mechanism provided by the present invention from another angle.

[0021] Figure 4 This is a structural schematic diagram of the film-pulling and bag-carrying mechanism provided by the present invention from another angle.

[0022] Figure 5 for Figure 1 Enlarged view of section A.

[0023] Figure 6 This is a schematic diagram of the structure of the film-stretching bag-making device provided by the present invention.

[0024] Figure 7 for Figure 6 Enlarged view of part B

[0025] Figure 8 This is a schematic diagram of the bag-carrying device provided by the present invention.

[0026] Figure 9 Figure 8 Enlarged view of section C

[0027] Figure 10 This is a schematic diagram of the film supply and sealing device provided by the present invention.

[0028] Figure 11 for Figure 10 Enlarged view of section D. Detailed Implementation

[0029] To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0030] It should be noted that when a component is referred to as being "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or may have an intervening component present. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or may have an intervening component present.

[0031] It should also be noted that the directional terms such as left, right, up, and down in the embodiments of the present invention are only relative concepts or are based on the normal use state of the product, and should not be considered as restrictive.

[0032] This invention provides a film-pulling and bag-carrying mechanism; please refer to [link / reference]. Figures 1-4The packaging machine includes a film supply and sealing device 1, a film stretching and bag making device 2, and a bag transporting device 3. The film stretching and bag making device 2 is located at the film outlet of the film supply and sealing device 1, and the bag transporting device 3 is located on the side of the film stretching and bag making device 2. The film supply and sealing device 1 supplies bag-making film material, the film stretching and bag making device 2 pulls the bag-making film material out from the film outlet, the film supply and sealing device 1 heat-cuts the bag-making film material and seals the edges to form a film bag, and the bag transporting device 3 adsorbs and opens the film bag from the top and bottom sides of the film bag and transports the film bag to a preset position. At the same time, the film stretching and bag making device 2 returns to the film outlet to stretch the film again. In this application, the film stretching and bag transporting device 3 is part of the packaging machine, and the aforementioned preset position is the product entry position when the packaging machine packages products. This invention supplies bag-making film material through a film supply and sealing device 1. After the film-pulling and bag-making device 2 pulls out the film material, the film supply and sealing device 1 heat-cuts the film material and seals the edges to form a bag. The bag-transferring device 3 then transports the bag to the product insertion position. The entire film-pulling and bag-transferring process is compact and rapid, improving the processing efficiency of the bag-making film material and saving user time. It avoids the problem in the prior art where, after the film is pulled to a set position by a film-pulling rod, a fixing device is needed to fix the film material, and the film-pulling rod must return to its original position before heat-cutting and sealing can be performed. The waiting time for the film-pulling rod to return to its original position is long, affecting processing efficiency and reducing user experience. In this application, the bag-making film material is a double-layer bag-making film material. The bag-making film material with openings at both ends of the film-pulling and bag-transferring mechanism is used to make a bag with one end open and three ends sealed to package the product.

[0033] Please see Figures 1-4 , Figure 6 and Figure 7The film-stretching bag-making device 2 includes a film-stretching hook plate 21 for spreading the bag-making film material, a film clamping assembly 22 for clamping and fixing the bag-making film material, a film-stretching drive assembly 23, and a film-stretching transmission assembly 24. The film-stretching drive assembly 23 is connected to the film-stretching transmission assembly 24. The film clamping assembly 22 is mounted on the film-stretching transmission assembly 24 via a film-stretching fixing plate 243. The film-stretching hook plate 21 is located on the side of the film clamping assembly 22. The film-stretching hook plate 21 hooks the bag-making film material, and the film clamping assembly 22 clamps the side of the bag-making film material. The film-stretching drive assembly 23 drives the film clamping assembly 22 and the film-stretching hook plate 21 to move away from the film outlet through the film-stretching transmission assembly 24. The film-supplying and sealing device 1 heat-cuts the bag-making film material and seals the edges to form a film bag. The film-stretching distance of the film-stretching bag-making device 2 is slightly greater than or equal to the width of the film bag. The film-pulling hook plate 21 serves two purposes: firstly, it hooks the bag-making film material, making it easier for the film-pulling and bag-making device 2 to pull the film material out from the film outlet and avoid slippage; secondly, it expands the film-making bag material, facilitating the subsequent adsorption and handling of the bag opening by the bag-handling device 3. The film-stretching bag-making device 2 also includes a film-stretching base plate 25. The film-stretching drive assembly 23 and the film-stretching transmission assembly 24 are disposed on the film-stretching base plate 25. The film-stretching transmission assembly 24 has double guide rails 26 on both sides for supporting the film clamping assembly 22 and the film-stretching hook plate 21. The film-stretching fixing plate 243 is slidably disposed on the double guide rails 26. The double guide rails 26 not only support the film clamping assembly 22 and the film-stretching hook plate 21, but also guide the movement of the film clamping assembly 22 and the film-stretching hook plate 21 to ensure the stability of the movement. The side of the film-stretching fixing plate 243 is also connected to a film-stretching drag chain 27. The film-stretching drag chain 27 protects and restrains the cable to avoid affecting the normal transmission of the film-stretching transmission assembly 24, and also provides auxiliary guidance for the movement of the film clamping assembly 22 and the film-stretching hook plate 21.

[0034] The film stretching drive assembly 23 includes a film stretching servo motor 231, which is sequentially mounted on a film stretching servo mounting base 234 via a film stretching reducer 232 and a coupling 233. The film stretching transmission assembly 24 includes a film stretching synchronous pulley 241 and a synchronous belt 242. The synchronous pulley is connected to the coupling 233, and the synchronous belt 242 is mounted on the film stretching synchronous pulley 241 and connected to the film stretching mounting plate 243. The film stretching servo motor 231 is mounted at one end of a film stretching motor connecting seat 235, and the other end of the film stretching motor connecting seat 235 is connected to the film stretching servo mounting base 234. The film stretching reducer 232 and the coupling 233 are fixed by the film stretching motor connecting seat 235 to ensure the stability of the drive output. The output end of the film stretching servo motor 231 is sequentially connected to the film stretching synchronous pulley 241 of the film stretching transmission assembly 24 via the film stretching reducer 232 and the coupling 233. There are two film-pulling synchronous wheels 241, and a synchronous belt 242 is fitted on the two film-pulling synchronous wheels 241. The film-pulling synchronous wheels 241 are set on the film-pulling base plate 25 through the synchronous wheel seat 244. The film-pulling fixing plate 243 is set on the synchronous belt 242. The film-pulling drive assembly 23 drives the film-pulling hook plate 21 and the film clamping assembly 22 on the film-pulling fixing plate 243 to reciprocate through the film-pulling synchronous wheels 241 and the synchronous belt 242 to pull the bag-making film material out from the film outlet.

[0035] The film clamping assembly 22 includes a first film clamping assembly 221 and a second film clamping assembly 222. The film stretching fixing plate 243 is provided with an adjusting screw 223 and an adjusting fixing seat 224 for adjusting the distance between the first film clamping assembly 221 and the second film clamping assembly 222. The adjusting screw 223 is mounted on the film stretching fixing plate 243 via the adjusting fixing seat 224. The first film clamping assembly 221 is mounted on the adjusting screw 223. The adjusting fixing seat 224 is mounted on one side of the second film clamping assembly 222. One end of the adjusting screw 223 is provided with an adjusting handle 225 for rotating the adjusting screw 223.

[0036] In one embodiment of this application, the second film clamping assembly 222 is disposed on the film stretching fixing plate 243, and the first film stretching assembly is connected to the adjusting screw 223. By rotating the adjusting handle 225, the first film clamping assembly 221 can be driven to move along the direction set by the adjusting screw 223, thereby adjusting the distance between the first film clamping assembly 221 and the second film clamping assembly 222, so as to be suitable for clamping and fixing bag making film materials of different lengths.

[0037] In another embodiment of this application, the first clamping assembly 221 and the second clamping assembly 222 are both connected to the adjusting screw 223. By rotating the adjusting handle 225, the adjusting screw 223 drives the first clamping assembly 221 and the second clamping assembly 222 to move towards or away from each other, thereby adjusting the distance between the first clamping assembly 221 and the second clamping assembly 222.

[0038] The first film clamping assembly 221 and the second film clamping assembly 222 both include a clamping claw 226, a film clamping cylinder 227, a film clamping seat 228, and a film clamping lifting cylinder 229. The clamping claw 226 is disposed at the end of the film clamping cylinder 227. The clamping claw 226 is driven by the film clamping cylinder 227 to achieve the clamping and releasing action of the bag making film material. The film clamping cylinder 227 is disposed on the film clamping seat 228. The film clamping seat 228 is disposed at the end of the film clamping lifting cylinder 229. The height position of the clamping claw 226 is adjusted by the film clamping lifting cylinder 229 to adapt to different heights of the film outlet.

[0039] The film-pulling hook plate 21 is located on the other side of the second film clamping assembly 222. The film-pulling hook plate 21 is sequentially mounted on the film-pulling fixing plate 243 via the film-pulling lifting cylinder 211 and the transverse guide rail 212. The side of the film-pulling lifting cylinder 211 is also provided with a film-pulling transverse cylinder 213 for driving the film-pulling hook plate 21 to move laterally. The transverse guide rail 212 is arranged parallel to the side of the adjusting screw 223. The film-pulling lifting cylinder 211 is slidably arranged on the transverse guide rail 212 and is perpendicular to the transverse guide rail 212. The output end of the film-pulling lifting cylinder 211 is connected to the film-pulling hook plate 21. The height of the film-pulling hook plate 21 is adjusted by the film-pulling lifting cylinder 211 so that the film-pulling hook plate 21 can hook bag-making film materials of different heights. The film-pulling hook plate 21 has a certain thickness so that while hooking the bag-making film material, the film-pulling hook plate 21 can also open a certain space between the upper and lower film materials of the double-layer bag-making film material to facilitate the subsequent operation of the bag-moving device 3. This application does not limit the thickness of the film-pulling hook plate 21, which can be one centimeter, two centimeters, etc., and can be set according to actual needs. The film-pulling transverse cylinder 213 is arranged parallel to the transverse guide rail 212. The output end of the film-pulling transverse cylinder 213 faces away from the first film clamping assembly 221, and the output end of the film-pulling transverse cylinder 213 is connected to the film-pulling lifting cylinder 211. The film-pulling transverse cylinder 213 drives the film-pulling hook plate 21 to move laterally. On the one hand, it facilitates the film-pulling hook plate 21 to enter the bag-making film material and hook the bag-making film material. On the other hand, it avoids interference with the normal operation of the bag-moving device 3 when the bag is moved.

[0040] Please see Figures 1-9The bag-moving device 3 includes a bag-opening component 31 for opening the opening of the film bag, a telescopic component 32 for avoiding the film-forming bag-making device 2 during bag-moving, a bag-moving drive component (not shown in the figure), and a bag-moving transmission component (not shown in the figure). The bag-moving drive component is connected to the bag-moving transmission component. The telescopic component 32 is mounted on the bag-moving transmission component via a module fixing plate 324. The bag-opening component 31 is mounted on the telescopic component 32. The telescopic component 32 drives the bag-opening component 31 to move closer to the opening of the film bag. The bag-opening component 31 attracts and opens the opening of the film bag from the upper and lower sides. The telescopic component 32 drives the film bag back to its original position. The bag-moving transmission component, through the bag-moving drive component, drives the bag-opening component 31 to transport the film bag to a preset position.

[0041] The bag-moving drive assembly includes a bag-moving servo motor 331, a bag-moving reducer 332, and a bag-moving module 333. The bag-moving servo motor 331 is connected to the module fixing plate 324 through the bag-moving reducer 332. The module fixing plate 324 is slidably mounted on the bag-moving module 333. The bag-moving servo motor 331 drives the bag-opening component 31 on the module fixing plate 324 to reciprocate on the bag-moving module 333 through the bag-moving reducer 332 to achieve cyclic bag moving. The telescopic component 32 includes an extension cylinder 321, an extension guide rail 322, and a guide rail connecting plate 323. The extension guide rail 322 is mounted on the module fixing plate 324, and the guide rail connecting plate 323 is slidably mounted on the extension guide rail 322. The extension cylinder 321 is mounted on one side of the module fixing plate 324 via an extension cylinder 321 fixing seat, which is perpendicular to the module fixing plate 324. The output end of the extension cylinder 321 is connected to the guide rail connecting plate 323 and drives the bag opening component 31 on the guide rail connecting plate 323 to reciprocate on the extension guide rail 322. This allows the bag opening component 31 to enter the opening of the film bag, adsorb, open, and fix the opening of the film bag on both sides, preparing for subsequent film bag handling. The telescopic component 32 serves two purposes: firstly, it drives the bag-opening component 31 into the bag opening and suctions and opens the bag opening from both the top and bottom sides, returning to its original position after the product is placed in the bag, awaiting the next action; secondly, it avoids collisions between the bag-handling device 3 and the film-pulling device 2 during the bag-handling process. A junction box 325 is also provided above the mounting base of the extension cylinder 321. The junction box 325 is connected to the bag-handling cable chain 326, which protects and restrains the cables connected to the junction box 325, preventing interference with the normal operation of the bag-handling device 3.

[0042] Please see Figures 1-11The bag opening assembly 31 includes a first bag opening assembly 311 for adsorbing the upper side of the bag opening, a second bag opening assembly 312 for adsorbing the lower side of the bag opening, and a bag opening module 313 for adjusting the distance between the first bag opening assembly 311 and the second bag opening assembly 312. The bag opening module 313 is disposed on the telescopic assembly 32. The first bag opening assembly 311 adsorbs the upper side of the bag opening, and the second bag opening assembly 312 adsorbs the lower side of the bag opening. The bag opening is slightly opened, and then the bag opening module 313 drives the first bag opening assembly 311 to move upward, so that the opening of the bag opening becomes larger, which facilitates the subsequent product insertion. The first bag opening assembly 311 includes an upper bag opening fixing plate 3111, an upper bag opening plate 3112, and an upper bag opening cylinder 3113 for adsorbing the opening of the upper film bag. The upper bag opening plate 3112 is set on the bag opening module 313 through the upper bag opening fixing plate 3111, and the upper bag opening cylinder 3113 is set on the upper bag opening plate 3112. Two upper bag opening plates 3112 are provided on the upper bag opening fixing plate 3111, and each of the two upper bag opening plates 3112 is provided with an upper bag opening cylinder 3113. The upper film bag opening is adsorbed by the two upper bag opening cylinders 3113 to ensure the stability of the adsorption of the film bag opening. The bag opening module 313 is mounted on the telescopic assembly 32 via a guide rail connecting plate 323. A bag opening servo motor 314 for driving the first bag opening assembly 311 to move up and down is provided on the side of the bag opening module 313. The first bag opening assembly 311 is slidably mounted on the bag opening module 313 via an upper bag opening fixing plate 3111. After the upper bag opening cylinder 3113 has absorbed the opening of the upper film bag, the bag opening servo motor 314 drives the first bag opening module 313 to move upward again, making the opening of the film bag larger and facilitating product insertion. The second bag opening assembly 312 includes a lower bag opening fixing plate 3121, a lower bag opening plate 3122, and a lower bag opening cylinder 3123 for absorbing the opening of the lower film bag. The lower bag opening plate 3122 is mounted on the telescopic assembly 32 via the lower bag opening fixing plate 3121. The second bag opening component 312 is mounted on the telescopic component 32 via a module connecting side plate 3124, which is vertically mounted on the guide rail connecting plate 323. The telescopic component 32 simultaneously drives the first bag opening component 311 and the second bag opening component 312 to move closer to or further away from the bag opening, ensuring the synchronicity of the first bag opening component 311 and the second bag opening component 312's adsorption of the bag opening and their movement in clamping the bag.

[0043] The first bag opening assembly 311 and the second bag opening assembly 312 are also provided with a pneumatic assembly 4 for blowing air into the film bag. The pneumatic assembly 4 includes an air blowing seat 41 and a pneumatic connector 42. The air blowing seat 41 is located on the first bag opening assembly 311 and the second bag opening assembly 312, and the air blowing seat 41 on the first bag opening assembly 311 and the air blowing seat 41 on the second bag opening assembly 312 are arranged opposite to each other. A hollow air passage (not shown in the figure) is provided inside the air blowing seat 41. The air inlet of the hollow air passage is connected to an external pneumatic device (not shown in the figure) through the pneumatic connector 42. The air outlet 43 of the hollow air passage is located on the side wall of the air blowing seat 41. The air outlet 43 of the hollow air passage is inclined, that is, the direction in which the hollow air passage is arranged inside the air blowing seat 41 has an angle with the direction in which the air blowing seat 41 is arranged. The pneumatic component 4 blows air into the film bag, keeping the inside of the film bag open, which facilitates the product to be put into the bag in one go. At the same time, it ensures that the film bag adheres tightly to the product when the bag is sealed in the subsequent packaging. The structure is simple, the cost is low and the efficiency is high.

[0044] The film supply and sealing device 1 includes a film feeding assembly (not shown in the figure), a sealing and cutting assembly 12, a film pressing assembly 13, and a lower knife holder assembly 14. The film feeding assembly is located on one side of the sealing and cutting assembly 12. The film feeding assembly supplies bag-making film material. The film pulling and bag-making device 2 pulls the bag-making film material out from the film outlet. The film pressing assembly 13 presses the bag-making film material. The sealing and cutting assembly 12 and the lower knife holder assembly 14 move relative to each other to heat-cut the bag-making film material and seal the edges to make a bag.

[0045] The film feeding assembly includes a film roll 111, a film roll shaft 112, a film feeding motor 113, and a film feeding guide wheel 114. The film roll 111 is mounted on a film feeding frame 115 via the film roll shaft 112, and the film feeding motor 113 is located on the side of the film feeding frame 115. The film pressing assembly 13 includes a film pressing fixing plate 131, an upper film pressing plate 132, a cylinder drive assembly (not shown in the figure), and a lower film pressing plate 133. The lower film pressing plate 133 and the film pressing fixing plate 131 are mounted on the film feeding frame 115, and the cylinder drive assembly is mounted on the film pressing fixing plate 132. The output end of the cylinder drive assembly is connected to the upper pressure plate 132. Before sealing and cutting the bag-making film material, the cylinder drive assembly drives the upper pressure plate 132 to move downward and press the bag-making film material with the lower pressure plate 133. At this time, because the film-pulling bag-making device 2 pulls the bag-making film material from the film outlet, the bag-making film material is in a taut state. The pressure plate assembly 13 presses the bag-making film material, making the sealing and cutting assembly 12 and the lower pressure plate assembly 14 seal and cut the bag-making film material more cleanly and neatly, avoiding the film bag from sticking to the bag-making film material. The sealing and cutting assembly 12 includes a sealing and cutting knife 121, a sealing and cutting knife holder 122, a knife holder fixing plate 123, a film cutting cylinder 124, a cylinder fixing plate 125, a guide shaft 126, and a guide bearing 127. The knife holder fixing plate 123 is mounted on the film placement frame 115. The cylinder fixing plate 125 is connected to the knife holder fixing plate 123. The film cutting cylinder 124 and the guide bearing 127 are mounted on the cylinder fixing plate 125. The sealing and cutting knife holder 122 is mounted on the knife holder fixing seat. The output end of the film cutting cylinder 124 is connected to the sealing and cutting knife 121 on the sealing and cutting knife holder 122. The guide shaft 126 passes through the guide bearing 127 and is connected to the sealing and cutting knife holder 122. The lower cutter assembly 14 includes a lower cutter 141 and a cutter cylinder 142. The lower cutter 141 is mounted on the cutter cylinder 142 via a cutter fixing plate 143. A silicone strip 144 is provided on the lower cutter 141. A cutter cylinder fixing plate 145 and a cutter pad 146 are sequentially provided at the lower end of the cutter cylinder 142. The upper pressure plate 132 and the lower pressure plate 133 are provided with several notches 134. The width of the notches 134 is the same as the width of the grippers 226 in the first clamping assembly 221 and the second clamping assembly 222. When the first clamping assembly 221 and the second clamping assembly 222 clamp the bag-making film, the grippers 226 enter the notches 134 to clamp and fix a relatively long length of bag-making film, ensuring the stability of the clamped bag-making film. When the film supply and sealing device 1 performs hot cutting and sealing, the film cutting cylinder 124 drives the sealing and cutting knife 121 to move downward, while the knife holder cylinder 142 drives the lower knife holder 141 to move upward. The sealing and cutting knife 121 hot cuts and seals the bag-making material film on the silicone strip 144 to form a film bag.

[0046] The side of the film pressing assembly 13 is provided with a film opening assembly 5, which includes a film opening cylinder 51 and upper and lower film opening plates 52. The output end of the film opening cylinder 51 is connected to the upper and lower film opening plates 52. When the film pulling and bag making device 2 pulls the bag making film material out of the film outlet, the film opening cylinder 51 drives the upper and lower film opening plates 52 to open up and down. When the film opening cylinder 51 drives the upper and lower film opening plates 52 to close, the sealing and cutting assembly 12 cuts the bag making film material and seals the edges to form a film bag. The film-opening cylinder 51 is mounted on the film-laying frame 115. The upper and lower film-opening plates 52 are positioned at a height higher than the lower pressure film plate 133 and are located between the upper pressure film plate 132 and the lower pressure film plate 133 when the film is opened. The upper and lower film-opening plates 52 are set up to separate the bag-making film material during the film-pulling process to prevent the bag opening from being unable to open. On the other hand, they also facilitate the film-pulling hook plate 21 to enter the bag opening from between the upper and lower film-opening plates 52 and hook the bag-making film material.

[0047] To better understand this application, the process of stretching and transferring the film bag will be described below:

[0048] The roll film 111 is placed on the film feeding rack 115 via the roll film shaft 112. The roll film 111 is manually pulled through the film feeding guide roller 114 and the film opening assembly 5 to the space between the sealing and cutting assembly 12 and the lower knife holder assembly 14. The hot cutting and sealing of the bag-making film material is achieved by manual control. During operation, the film pulling servo motor 231 drives the first film clamping assembly 221 and the second film clamping assembly 222 to the film outlet. The film opening cylinder 51 drives the upper and lower film opening plates 52 to open. The film pulling hook plate 21 enters between the double-layer bag-making film material. The film pulling servo motor 231 moves backward a certain position so that the film pulling hook plate 21 tightly pulls the bag-making film material. The first film clamping assembly 221 and the second film clamping assembly 222 clamp the bag-making film material. The film pressing assembly 13 opens. The film pulling servo motor 231 drives the film pulling hook plate 21 and the film clamping assembly 22 to move backward to the required position. The extension cylinder 321... Moving towards the double-layer bag-making film material side, the first bag-opening component 311 and the second bag-opening component 312 adsorb the bag-making film material, the pressing component 13 closes to press the bag-making film material tightly, the sealing and cutting component 12 and the lower knife seat component 14 heat-cut the bag-making film material and seal the edges to form a film bag, the extending cylinder 321 moves away from the double-layer bag-making film material, the bag-opening servo motor 314 drives the first bag-opening component 311 to move upward, the pneumatic component 4 blows air into the film bag, and at the same time the bag-carrying servo motor 331 drives the bag-opening component 31 to move towards the product bag entry position, the film-pulling bag-making device 2 returns to the film outlet to perform the next round of film pulling, after the product enters the bag, the first bag-opening component 311 and the second bag-opening component 312 release the film bag, the bag-carrying servo motor 331 drives the bag-opening component 31 to return to the original position to open the bag-making film material pulled out by the film-pulling bag-making device 2 again and transport it to the product bag entry position.

[0049] In summary, the present invention provides a film-pulling and bag-carrying mechanism, comprising a film supply and sealing device, a film-pulling and bag-making device, and a bag-carrying device. The film-pulling and bag-making device is located at the film outlet of the film supply and sealing device, and the bag-carrying device is located on the side of the film-pulling and bag-making device. The film supply and sealing device supplies bag-making film material, the film-pulling and bag-making device pulls the bag-making film material out from the film outlet, the film supply and sealing device heat-cuts the bag-making film material and seals the edges to form a film bag, and the bag-carrying device adsorbs and opens the film bag opening from the top and bottom sides of the film bag and transports the film bag to a preset position. At the same time, the film-pulling and bag-making device returns to the film outlet to pull the film again. This invention supplies bag-making film material through a film supply and sealing device. After the film material is pulled out by the film-pulling and bag-making device, the film supply and sealing device heat-cuts the film material and seals the edges to form a bag. The bag-transferring device then transports the bag to the product insertion position. The entire film-pulling and bag-transferring process is compact and rapid, improving the processing efficiency of the bag-making film material and saving user time. It avoids the problem in the prior art where, after the film is pulled to the set position by a film-pulling rod, a fixing device is needed to fix the film material, and the film-pulling rod must return to its original position before heat-cutting and sealing can be performed. The film-pulling rod reset process takes a long time, affecting processing efficiency and reducing user experience.

[0050] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solution and inventive concept of the present invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A film-pulling and bag-carrying mechanism, characterized in that, The device includes a film supply and sealing device, a film stretching and bag making device, and a bag transporting device. The film stretching and bag making device is located at the film outlet of the film supply and sealing device, and the bag transporting device is located on the side of the film stretching and bag making device. The film supply and sealing device supplies bag-making film material, the film stretching and bag making device pulls the bag-making film material out from the film outlet, the film supply and sealing device heat-cuts the bag-making film material and seals the edges to form a film bag, and the bag transporting device adsorbs and opens the film bag opening from the top and bottom sides of the film bag and transports the film bag to a preset position. At the same time, the film stretching and bag making device returns to the film outlet to stretch the film again. The film stretching and bag making device includes a film stretching hook plate for spreading the bag-making film material, a film clamping assembly for clamping and fixing the bag-making film material, a film stretching drive assembly, and a film stretching transmission assembly. The film clamping assembly is set on the film stretching transmission assembly through a film stretching fixing plate. The film stretching hook plate hooks the bag-making film material, the film clamping assembly clamps the side of the bag-making film material, and the film stretching drive assembly... The assembly drives the film clamping assembly and film hook plate to move away from the film outlet through the film pulling transmission assembly. The film supply and sealing cutting device heat-cuts the bag-making film material and seals the edges to form a film bag. The film clamping assembly includes a first film clamping assembly and a second film clamping assembly. The film supply and sealing cutting device includes a film pressing assembly, which includes an upper film pressing plate and a lower film pressing plate. The upper and lower film pressing plates are provided with several notches. The width of the notches is the same as the width of the grippers in the first and second film clamping assemblies. Both the first and second film clamping assemblies include grippers. When the first and second film clamping assemblies clamp the bag-making film material, the grippers enter the notches to clamp the bag-making film material. The side of the film pressing assembly is provided with a film opening assembly, which includes upper and lower film opening plates. The upper and lower film opening plates are set at a height higher than the lower film pressing plate and are located between the upper and lower film pressing plates when opened.

2. The film-pulling and bag-carrying mechanism according to claim 1, characterized in that, The film-stretching fixing plate is provided with an adjusting screw and an adjusting fixing seat for adjusting the distance between the first film clamping assembly and the second film clamping assembly. The adjusting screw is mounted on the film-stretching fixing plate via the adjusting fixing seat. The first film clamping assembly is mounted on the adjusting screw. The adjusting fixing seat is located on one side of the second film clamping assembly. One end of the adjusting screw is provided with an adjusting handle for rotating the adjusting screw.

3. The film-pulling and bag-carrying mechanism according to claim 2, characterized in that, The film-pulling hook plate is located on the other side of the second film clamping assembly. The film-pulling hook plate is sequentially mounted on the film-pulling fixing plate via a film-pulling lifting cylinder and a transverse guide rail. The side of the film-pulling lifting cylinder is also provided with a film-pulling transverse cylinder for driving the film-pulling hook plate to move laterally.

4. The film-pulling and bag-carrying mechanism according to claim 1, characterized in that, The membrane stretching drive assembly includes a membrane stretching servo motor, which is sequentially mounted on a membrane stretching servo mounting base via a membrane stretching reducer and a coupling; the membrane stretching transmission assembly includes a membrane stretching synchronous pulley and a synchronous belt, which are connected to the coupling and mounted on the synchronous pulley and connected to the membrane stretching mounting plate.

5. The film-pulling and bag-carrying mechanism according to claim 1, characterized in that, The bag-handling device includes an opening component for opening the bag opening, a telescopic component for avoiding the film-forming bag-making device during bag handling, a bag-handling drive component, and a bag-handling transmission component. The telescopic component drives the opening component to move closer to the opening of the bag. The opening component attracts and opens the bag opening from the top and bottom sides of the bag. The telescopic component drives the bag back to its original position. The bag-handling transmission component, through the bag-handling drive component, drives the opening component to transport the bag to a preset position.

6. The film-pulling and bag-carrying mechanism according to claim 5, characterized in that, The bag opening assembly includes a first bag opening assembly for adsorbing the upper side of the film bag opening, a second bag opening assembly for adsorbing the lower side of the film bag opening, and a bag opening module for adjusting the distance between the first and second bag opening assemblies. The bag opening module is disposed on the telescopic assembly. The first bag opening assembly includes an upper bag opening fixing plate, an upper bag opening plate, and an upper bag opening cylinder. The upper bag opening plate is disposed on the bag opening module via the upper bag opening fixing plate, and the upper bag opening cylinder is disposed on the upper bag opening plate. The second bag opening assembly includes a lower bag opening fixing plate, a lower bag opening plate, and a lower bag opening cylinder. The lower bag opening plate is disposed on the telescopic assembly via the lower bag opening fixing plate.

7. The film-pulling and bag-carrying mechanism according to claim 6, characterized in that, The first and second bag opening components are also equipped with pneumatic components for blowing air into the film bag.

8. The film-pulling and bag-carrying mechanism according to claim 1, characterized in that, The film supply and sealing device includes a film feeding assembly, a sealing and cutting assembly, and a lower knife assembly. The film feeding assembly is located on one side of the sealing and cutting assembly. The film feeding assembly supplies bag-making film material. The film pulling and bag-making device pulls the bag-making film material out from the film outlet. The film pressing assembly presses the bag-making film material. The sealing and cutting assembly and the lower knife assembly move relative to each other to heat-cut the bag-making film material and seal the edges to make a bag.

9. The film-pulling and bag-carrying mechanism according to claim 8, characterized in that, The film-opening assembly includes a film-opening cylinder, the output end of which is connected to the upper and lower film-opening plates. When the film-pulling and bag-making device pulls the bag-making film material out of the film outlet, the film-opening cylinder drives the upper and lower film-opening plates to open up and down. When the film-opening cylinder drives the upper and lower film-opening plates to close, the sealing and cutting assembly cuts the bag-making film material and seals the edges to form a film bag.

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