A packaging bag blown film device

Abstract

The present invention discloses a blown film device for packaging bags, belonging to the technical field of blown film processes. The blown film device for packaging bags includes a workbench assembly. A blowing support mechanism is fixedly connected to the center of the top of the workbench assembly. An air guiding mechanism is fixedly connected to the bottom of the blowing support mechanism. A material transmission mechanism is rotatably connected to the outer wall of the blowing support mechanism. A solid ring assembly is installed on the top of the material transmission mechanism on the outer wall of the blowing support mechanism. An outer mold and a driving mechanism are fixedly connected to one side of the top of the workbench assembly. The present invention designs the outer mold and the driving mechanism to realize the driving of the material transmission mechanism to extrude the material in a spiral manner, and at the same time, it can also realize the opening and closing of the first outer mold and the second outer mold. By removing the solid ring assembly and the overall material transmission mechanism, the cleaning of multiple disassembled and opened components can be started. There are no cleaning dead corners, and the installation and disassembly steps are more convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of blown film processes, and particularly relates to a blown film device for packaging bags. Background Art

[0002] The blown film process for packaging bags is an important method for producing packaging bag films. First, plastic raw materials such as polyethylene are added to an extruder and heated to melt and plasticize them; then, the molten plastic is extruded from a die head to form a tube, and at the same time, air is introduced into the tube to blow it into a film. During the blowing process, the film is cooled and shaped by a cooling air ring; finally, the cooled film is pulled by a traction device to a winding device and wound into a film roll. The film produced by this process has a uniform texture and good strength, can meet the performance requirements of various packaging bags for the film, and has a high production efficiency. It can mass-produce packaging bag films of different specifications. The blown film process is of great significance. It can efficiently produce various plastic films with excellent properties and is widely used in fields such as packaging to meet the diverse needs of people's daily lives and industrial production.

[0003] After the existing packaging bags are produced by blown film, there are often a lot of cooled raw materials remaining in their molds. When remaining in some gaps and corners, they are often difficult to clean. Moreover, since the blown film molds usually have a complex structure, it is difficult for cleaning tools to reach all parts. Therefore, when the blown film molds need to be cleaned, they often face relatively cumbersome steps. At the same time, the existing blown film devices will have uneven air blowing and uneven extrusion of materials during the production of blown film. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a blown film device for packaging bags.

[0005] The technical solution adopted to solve the above technical problem is: to provide a blown film device for packaging bags, including a workbench assembly. A blowing support mechanism is fixedly connected to the center of the top of the workbench assembly. An air guiding mechanism is fixedly connected to the bottom of the blowing support mechanism. A material transmission mechanism is rotatably connected to the outer wall of the blowing support mechanism;

[0006] An entity ring assembly is installed on the outer wall of the blowing support mechanism at the top of the material transmission mechanism. An outer mold and a driving mechanism are fixedly connected to one side of the top of the workbench assembly;

[0007] A feeding connection mechanism is installed on one side of the outer mold and the driving mechanism. An integration round plate is fixedly connected to the top of the outer mold and the driving mechanism. Opening and closing driving mechanisms are installed at both the front and rear ends on one side of the top of the workbench assembly. An air compressor assembly is installed at the front end of the material transmission mechanism.

[0008] Furthermore, the workbench assembly includes a supporting workbench, and a plurality of first fixing bolt assemblies are installed at the center of the top of the supporting workbench. Both the front and rear ends of the center of the top of the supporting workbench are fixedly connected with limiting guide rails.

[0009] Through the above technical solution, the blowing support mechanism is installed and fixed by a plurality of first fixing bolt assemblies, and at the same time, the outer mold and the driving mechanism components are rotationally supported by the limiting guide rails.

[0010] Furthermore, the blowing support mechanism includes a fixing plate fixedly connected to the top of the supporting workbench. A bottom connecting part and a blowing pipeline are respectively fixedly connected to the bottom and the top of the fixing plate. A uniformly distributed spiral assembly is fixedly connected to the bottom of the inner wall of the blowing pipeline. An air outlet pipeline is fixedly connected to the outer wall of the uniformly distributed spiral assembly. First plane bearings and second plane bearings are respectively fixedly connected to the outer wall of the blowing pipeline. A plurality of limiting columns are fixedly connected to the tops of the first plane bearings and the second plane bearings.

[0011] Through the above technical solution, the rotation support of the material transmission mechanism is completed by the overall blowing support mechanism. At the same time, the air guiding mechanism is connected through the bottom connecting part. During film blowing, the gas passes through the uniformly distributed spiral assembly to make the gas more uniform, and finally is output from the entity ring assembly at the top to start cooling the extruded packaging bag. The gas finally outputs downward from the air outlet pipeline.

[0012] Furthermore, the air guiding mechanism includes a mechanism housing fixedly connected to the bottom of the blowing support mechanism. A conical guiding sleeve is fixedly connected to the center of the bottom of the mechanism housing. A connecting pipeline is fixedly connected to the outer wall of the mechanism housing. An output pipeline is fixedly connected to the bottom of the conical guiding sleeve. A plurality of vortex guiding plates are fixedly connected between the inner wall of the mechanism housing and the conical guiding sleeve. The mechanism housing and the conical guiding sleeve are of an integral structure, and the other end of the connecting pipeline is fixedly connected to the output end of the air compressor assembly.

[0013] Through the above technical solution, during the film blowing process, the air compressor assembly continuously inputs gas into the interior of the mechanism housing through the connecting pipeline, and then is guided by a plurality of vortex guiding plates and spirally outputs upward through the conical guiding sleeve, which can make the air flow more uniform and stable.

[0014] Furthermore, the material transmission mechanism includes a rotating sleeve main body rotatably connected to the outer wall of the air guiding mechanism. A limiting disk and a clamping bearing are respectively fixedly connected to the bottom of the outer wall of the rotating sleeve main body. An integral bevel gear ring is fixedly connected to the bottom of the rotating sleeve main body. An integral spiral blade is fixedly connected to the outer wall of the rotating sleeve main body.

[0015] Through the above technical solution, during installation, the overall material transmission mechanism is sleeved on the outer wall of the air blowing support mechanism, and is clamped and fixed through a plurality of limit posts and the grooves on the rotating sleeve body, and the rotation support of the material transmission mechanism is realized through the first plain bearing and the second plain bearing. During operation, the molten material is transmitted in through the feeding connection mechanism. Driven by the outer mold and the drive mechanism, the integral bevel gear ring rotates. The rotating integral spiral blade continuously outputs the molten material upward, and finally extrudes through the gap between the outer wall of the solid ring assembly and the integrated circular plate. Workers pull out the extruded material until a complete packaging bag is pulled out.

[0016] Furthermore, the solid ring assembly includes an extended solid ring. A plurality of limit blocks are fixedly connected to the inner wall of the extended solid ring, and a plurality of grooves corresponding to the limit blocks are formed on the outer wall of the air blowing pipe.

[0017] Through the above technical solution, during installation, the solid ring assembly is clamped in the groove on the outer wall of the air blowing pipe, and then rotated to snap the limit block into the dead corner of the groove, realizing the up and down limit of the solid ring assembly.

[0018] Furthermore, the outer mold and the drive mechanism include a fixed frame installed on one side of the top of the workbench assembly and a rotating support block fixedly connected to the top of the workbench assembly. A integral double-axis plate is fixedly connected to the top of the fixed frame. Two support bottom shafts are fixedly connected to the top of the rotating support block. A first outer mold and a second outer mold are respectively rotatably connected between the two support bottom shafts and the integral double-axis plate. The outer mold and the drive mechanism further include a drive motor fixedly connected between one side of the fixed frame and the top of the workbench assembly. A bevel gear is fixedly connected to the output end of the drive motor. Integral sealing ridges are fixedly connected to the mutually corresponding sides of the first outer mold and the second outer mold. Two second fixing bolt assemblies are fixedly connected to the tops of the first outer mold and the second outer mold. Two movable bolt assemblies are installed on the other sides of the first outer mold and the second outer mold. Threaded sleeves are fixedly connected to the sides of the first outer mold and the second outer mold close to the feeding connection mechanism. Drive round rods and guiding support blocks are respectively fixedly connected to the bottoms of the first outer mold and the second outer mold.

[0019] Through the above technical solutions, during the installation and disassembly processes, the push-pull driving round rod can be realized through the opening and closing driving mechanism, thereby driving the first outer mold and the second outer mold to open and close. During the rotation process, the rotation is limited and supported through the guiding support block and the limiting guide rail. When combined, the integrated sealing convex strips of the first outer mold and the second outer mold are respectively stuck into the notch of the other party to seal the gap. After the first outer mold and the second outer mold are opened, the material transmission mechanism and the entity ring assembly can be disassembled, and thus rapid cleaning can be achieved during subsequent cleaning. At the same time, the fully opened first outer mold and second outer mold can be well cleaned without cleaning dead corners. During the working process, the driving motor drives the bevel gear to rotate, thereby driving the overall material transmission mechanism to rotate, realizing the upward spiral extrusion of the material, which is more uniform.

[0020] Further, the integrated sealing convex strips of the first outer mold and the second outer mold are fixed in opposite directions, and corresponding card slots are provided on the other side of the integrated sealing convex strips of the first outer mold and the second outer mold. Grooves corresponding to the feeding connection mechanism are provided on one side of the first outer mold and the second outer mold.

[0021] Through the above technical solutions, the integrated sealing convex strips of the first outer mold and the second outer mold respectively form a seal with the card slots of the other party, avoiding the molten material from extruding from the gap during the spiral rotation output of the material.

[0022] Further, the feeding connection mechanism includes a conical pipe. A positioning block is fixedly connected to the top of the conical pipe. An integrated double-groove plate is fixedly connected to the center of the outer wall of the conical pipe. Locking bolts are provided at both the front and rear ends of the conical pipe. Push plates are fixedly connected to the outer walls of the two locking bolts. An integrated connecting flange is fixedly connected to the other end of the conical pipe.

[0023] Through the above technical solutions, during installation, the first outer mold and the second outer mold are combined, and the two locking bolts are rotated, thereby driving the two push plates to squeeze the integrated double-groove plate, realizing the generation of a thrust on the overall conical pipe. The tight fit between the conical pipe and the first outer mold and the second outer mold is achieved through the conical surface at the other end of the conical pipe, avoiding the material from extruding from the gap during subsequent material transmission. Then, the injection molding machine can be connected through the integrated connecting flange.

[0024] Further, the opening and closing driving mechanism includes a shaft seat fixing sleeve rotatably connected to the top of the workbench assembly and a limit fixing sleeve slidably connected to the top of the workbench assembly. A driving hydraulic cylinder is installed between the shaft seat fixing sleeve and the limit fixing sleeve. The output end of the driving hydraulic cylinder is fixedly connected with a socket ring.

[0025] Through the above technical solution, two driving hydraulic cylinders are used to control the opening and closing of the first outer mold and the second outer mold respectively, and the rotation is realized with the shaft seat fixing sleeve as the rotation axis, and then the limit is realized through the limit fixing sleeve and the arc-shaped groove at the top of the workbench assembly.

[0026] The beneficial effects of the present invention are as follows: (1) By designing the outer mold and the driving mechanism, the present invention can drive the material transmission mechanism to extrude the material in a spiral manner while realizing the opening and closing of the first outer mold and the second outer mold. During subsequent cleaning, loosen the two locking bolts, then disassemble the two movable bolt assemblies and the integrated circular plate respectively, and pull the first outer mold and the second outer mold respectively through the two driving hydraulic cylinders to open the first outer mold and the second outer mold, remove the solid ring assembly and the overall material transmission mechanism, and then the cleaning of the disassembled and opened multiple components can be started. There is no cleaning dead angle, and the installation and disassembly steps are more convenient; (2) By designing the air guiding mechanism, during the film blowing process, the air compressor assembly continuously inputs gas into the interior of the mechanism housing through the connecting pipe, and then guides it through multiple spiral guide plates, and realizes the spiral upward output through the conical guide sleeve, which can make the air flow more uniform and stable. The designed feeding connection mechanism rotates the two locking bolts to drive the two push plates to squeeze the integrated double-groove plate, realizes the thrust on the overall conical pipe, and realizes the tight fit between the conical pipe and the first outer mold and the second outer mold through the conical surface at the other end of the conical pipe, avoiding the extrusion of materials from the gap during subsequent material transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the three-dimensional structure schematic diagram of the present invention;

[0028] Figure 2 is the structure schematic diagram of the workbench assembly of the present invention;

[0029] Figure 3 is the structure schematic diagram of the air blowing support mechanism and the air guiding mechanism of the present invention;

[0030] Figure 4 is Figure 3 the three-dimensional sectional structure schematic diagram of;

[0031] Figure 5 is the three-dimensional structure schematic diagram of the air blowing support mechanism of the present invention;

[0032] Figure 6 is the sectional structure schematic diagram of the air blowing support mechanism of the present invention;

[0033] Figure 7 is the structure schematic diagram of the air guiding mechanism of the present invention;

[0034] Figure 8 is the three-dimensional sectional structure schematic diagram of the air guiding mechanism of the present invention;

[0035] Figure 9 It is a schematic structural diagram of the spiral guide plate of the present invention;

[0036] Figure 10 It is a schematic structural diagram of the material transmission mechanism of the present invention;

[0037] Figure 11 It is a schematic three-dimensional sectional structure diagram of the material transmission mechanism of the present invention;

[0038] Figure 12 It is a schematic diagram of a partial structure of the present invention;

[0039] Figure 13 It is Figure 12 a schematic sectional structure diagram of;

[0040] Figure 14 It is a schematic structural diagram of the solid ring assembly of the present invention;

[0041] Figure 15 It is Figure 13 a partial enlarged view at position A in;

[0042] Figure 16 It is a schematic structural diagram of the outer mold and the driving mechanism of the present invention;

[0043] Figure 17 It is an exploded structural diagram of the outer mold and the driving mechanism of the present invention;

[0044] Figure 18 It is a schematic diagram of a partial structure of the outer mold and the driving mechanism of the present invention;

[0045] Figure 19 It is a schematic structural diagram of the first outer mold of the present invention;

[0046] Figure 20 It is a schematic structural diagram of the feed connection mechanism of the present invention;

[0047] Figure 21 It is a schematic diagram of the opened structure of the first outer mold and the second outer mold of the present invention;

[0048] Figure 22 It is Figure 21 a schematic side structure diagram;

[0049] Figure 23 It is a schematic structural diagram of the opening and closing driving mechanism of the present invention.

[0050] Reference Numerals: 1, workbench assembly; 101, support workbench; 102, first fixing bolt assembly; 103, limiting guide rail; 2, air blowing support mechanism; 201, fixing plate; 202, bottom connecting member; 203, air blowing pipe; 204, evenly distributed spiral assembly; 205, air outlet pipe; 206, first plain bearing; 207, second plain bearing; 208, limiting post; 3, air guiding mechanism; 301, mechanism housing; 302, conical guiding sleeve; 303, connecting pipe; 304, output pipe; 305, spiral guiding plate; 4, material conveying mechanism; 401, rotating sleeve body; 402, limiting disk; 403, clamping bearing; 404, integral bevel gear ring; 405, integral spiral blade; 5, solid ring assembly; 51, extended solid ring; 52, limiting block; 6, outer mold and driving mechanism; 601, fixing frame; 602, integral double-axis plate; 603, driving motor; 604, bevel gear; 605, rotating support block; 606, supporting bottom shaft; 607, first outer mold; 608, second outer mold; 609, integral sealing rib; 610, second fixing bolt assembly; 611, movable bolt assembly; 612, threaded sleeve; 613, driving round bar; 614, guiding support block; 7, feeding connecting mechanism; 701, conical pipe; 702, positioning block; 703, integral double-groove plate; 704, locking bolt; 705, push plate; 706, integral connecting flange; 8, integrated circular plate; 9, opening and closing driving mechanism; 901, shaft seat fixing sleeve; 902, limiting fixing sleeve; 903, driving hydraulic cylinder; 904, socketing circular ring; 10, air compressor assembly. Detailed Implementation Manner

[0051] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present 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 only used to explain the present invention and are not used to limit the present invention.

[0052] As Figures 1-6As shown in the figure, a blown film device for packaging bags in this embodiment includes a workbench assembly 1. The workbench assembly 1 includes a support workbench 101. A plurality of first fixing bolt assemblies 102 are installed at the center of the top of the support workbench 101. Limit guide rails 103 are fixedly connected to both the front and rear ends of the center of the top of the support workbench 101. The installation and fixation of the air blowing support mechanism 2 are realized through the plurality of first fixing bolt assemblies 102. At the same time, the rotational support of the outer die and drive mechanism 6 components is realized through the limit guide rails 103. The air blowing support mechanism 2 is fixedly connected to the center of the top of the workbench assembly 1. The air blowing support mechanism 2 includes a fixed disk 201 fixedly connected to the top of the support workbench 101. A bottom connecting piece 202 and an air blowing pipe 203 are respectively fixedly connected to the bottom and top of the fixed disk 201. A uniformly distributed spiral assembly 204 is fixedly connected to the bottom of the inner wall of the air blowing pipe 203. An air outlet pipe 205 is fixedly connected to the outer wall of the uniformly distributed spiral assembly 204. A first plain bearing 206 and a second plain bearing 207 are respectively fixedly connected to the outer wall of the air blowing pipe 203. A plurality of limit posts 208 are fixedly connected to the tops of the first plain bearing 206 and the second plain bearing 207. The rotational support of the material transmission mechanism 4 is completed through the overall air blowing support mechanism 2. At the same time, the air guiding mechanism 3 is connected through the bottom connecting piece 202. During film blowing, the gas passes through the uniformly distributed spiral assembly 204 to make the gas more uniform, and finally is output from the solid ring assembly 5 at the top to start cooling the extruded packaging bag. The gas finally outputs downward from the air outlet pipe 205.

[0053] As Figures 1-9 shown, the air guiding mechanism 3 is fixedly connected to the bottom of the air blowing support mechanism 2. The air guiding mechanism 3 includes a mechanism housing 301 fixedly connected to the bottom of the air blowing support mechanism 2. A conical guide sleeve 302 is fixedly connected to the center of the bottom of the mechanism housing 301. A connecting pipe 303 is fixedly connected to the outer wall of the mechanism housing 301. An output pipe 304 is fixedly connected to the bottom of the conical guide sleeve 302. A plurality of spiral guide plates 305 are fixedly connected between the inner wall of the mechanism housing 301 and the conical guide sleeve 302. The mechanism housing 301 and the conical guide sleeve 302 are of an integral structure, and the other end of the connecting pipe 303 is fixedly connected to the output end of the air compressor assembly 10. During the film blowing process, the air compressor assembly 10 continuously inputs gas into the interior of the mechanism housing 301 through the connecting pipe 303, and then is guided through the plurality of spiral guide plates 305 and is output spirally upward through the conical guide sleeve 302, which can make the air flow more uniform and stable.

[0054] As Figures 1-14As shown, the outer wall of the air-blowing support mechanism 2 is rotatably connected to a material transmission mechanism 4. The material transmission mechanism 4 includes a rotating sleeve body 401 rotatably connected to the outer wall of the air guiding mechanism 3. The bottom of the outer wall of the rotating sleeve body 401 is fixedly connected with a limiting disk 402 and a clamping bearing 403 respectively. The bottom of the rotating sleeve body 401 is fixedly connected with an integral bevel gear ring 404. The outer wall of the rotating sleeve body 401 is fixedly connected with an integral spiral blade 405. During installation, the whole material transmission mechanism 4 is sleeved on the outer wall of the air-blowing support mechanism 2, and is clamped and fixed through a plurality of limiting posts 208 and the grooves on the rotating sleeve body 401, and the rotation support of the material transmission mechanism 4 is realized through the first plain bearing 206 and the second plain bearing 207. During operation, the molten material is transmitted in through the feeding connection mechanism 7. Driven by the outer mold and the driving mechanism 6, the integral bevel gear ring 404 is driven to rotate. The rotating integral spiral blade 405 will continuously output the molten material upward, and finally extrude it through between the outer wall of the solid ring assembly 5 and the integrated circular plate 8. The worker pulls out the extruded material until a complete packaging bag is pulled out. An outer wall of the air-blowing support mechanism 2 is provided with a solid ring assembly 5 at the top of the material transmission mechanism 4. The solid ring assembly 5 includes an extended solid ring 51. The inner wall of the extended solid ring 51 is fixedly connected with a plurality of limiting blocks 52. The outer wall of the air-blowing pipe 203 is provided with a plurality of grooves corresponding to the limiting blocks 52. During installation, the solid ring assembly 5 is stuck in the grooves on the outer wall of the air-blowing pipe 203, and then rotated to make the limiting blocks 52 stuck in the dead corners of the grooves, so as to realize the up-and-down limit of the solid ring assembly 5.

[0055] As Figures 1-19As shown in the figure, on one side of the top of the workbench assembly 1, an outer mold and a driving mechanism 6 are fixedly connected. The outer mold and the driving mechanism 6 include a fixed frame 601 installed on one side of the top of the workbench assembly 1 and a rotating support block 605 fixedly connected to the top of the workbench assembly 1. On the top of the fixed frame 601, an integrated double-axis plate 602 is fixedly connected. On the top of the rotating support block 605, two support bottom shafts 606 are fixedly connected. A first outer mold 607 and a second outer mold 608 are respectively rotatably connected between the two support bottom shafts 606 and the integrated double-axis plate 602. The outer mold and the driving mechanism 6 further include a driving motor 603 fixedly connected between one side of the fixed frame 601 and the top of the workbench assembly 1. The output end of the driving motor 603 is fixedly connected with a bevel gear 604. On the corresponding sides of the first outer mold 607 and the second outer mold 608, integrated sealing ridges 609 are fixedly connected. On the top of the first outer mold 607 and the second outer mold 608, two second fixing bolt assemblies 610 are fixedly connected. On the other side of the first outer mold 607 and the second outer mold 608, two movable bolt assemblies 611 are installed. On the side of the first outer mold 607 and the second outer mold 608 close to the feeding connection mechanism 7, threaded sleeves 612 are fixedly connected. At the bottom of the first outer mold 607 and the second outer mold 608, a driving round rod 613 and a guiding support block 614 are respectively fixedly connected. During the installation and disassembly process, the driving round rod 613 can be pushed and pulled by opening and closing the driving mechanism 9, thereby driving the first outer mold 607 and the second outer mold 608 to open and close. During the rotation process, the rotation is limited and supported by the guiding support block 614 and the limiting guide rail 103. When combined, the integrated sealing ridges 609 of the first outer mold 607 and the second outer mold 608 are respectively inserted into the notch of the other party to seal the gap. After the first outer mold 607 and the second outer mold 608 are opened, the material transmission mechanism 4 and the solid ring assembly 5 can be disassembled, and thus rapid cleaning can be achieved during the subsequent cleaning process. At the same time, the fully opened first outer mold 607 and second outer mold 608 can be well cleaned without cleaning dead corners. During the working process, the driving motor 603 drives the bevel gear 604 to rotate, thereby driving the entire material transmission mechanism 4 to rotate, realizing the upward spiral extrusion of the material, which is more uniform. The integrated sealing ridges 609 of the first outer mold 607 and the second outer mold 608 are fixed in opposite directions, and corresponding card slots are provided on the other side of the integrated sealing ridges 609 of the first outer mold 607 and the second outer mold 608. On one side of the first outer mold 607 and the second outer mold 608, grooves corresponding to the feeding connection mechanism 7 are provided. The integrated sealing ridges 609 of the first outer mold 607 and the second outer mold 608 respectively form a seal with the card slots of the other party, preventing the molten material from extruding from the gap during the spiral rotation output of the material.

[0056] As Figures 1-23As shown in the figure, a feeding connection mechanism 7 is installed on one side of the outer mold and the driving mechanism 6. The feeding connection mechanism 7 includes a conical pipe 701. A positioning block 702 is fixedly connected to the top of the conical pipe 701. An integrated double-groove plate 703 is fixedly connected to the center of the outer wall of the conical pipe 701. Locking bolts 704 are arranged at both the front and rear ends of the conical pipe 701. Push plates 705 are fixedly connected to the outer walls of the two locking bolts 704. The other end of the conical pipe 701 is fixedly connected to an integrated connecting flange 706. During installation, the first outer mold 607 and the second outer mold 608 are combined. The two locking bolts 704 are rotated, and then the two push plates 705 are driven to squeeze the integrated double-groove plate 703, so as to generate a thrust on the overall conical pipe 701. The conical surface at the other end of the conical pipe 701 is used to achieve a tight fit between the first outer mold 607 and the second outer mold 608, so as to prevent the material from being extruded from the gap during subsequent material transmission. Then, it can be connected to the injection molding machine through the integrated connecting flange 706. An integrated circular plate 8 is fixedly connected to the top of the outer mold and the driving mechanism 6. Opening and closing driving mechanisms 9 are installed at both the front and rear ends on one side of the top of the workbench assembly 1. The opening and closing driving mechanism 9 includes a shaft seat fixing sleeve 901 rotatably connected to the top of the workbench assembly 1 and a limit fixing sleeve 902 slidably connected to the top of the workbench assembly 1. A driving hydraulic cylinder 903 is installed between the shaft seat fixing sleeve 901 and the limit fixing sleeve 902. The output end of the driving hydraulic cylinder 903 is fixedly connected to a socket ring 904. The opening and closing of the first outer mold 607 and the second outer mold 608 are respectively controlled by the two driving hydraulic cylinders 903, and they rotate around the shaft seat fixing sleeve 901 as the rotation axis. Then, the limit is achieved through the limit fixing sleeve 902 and the arc-shaped groove on the top of the workbench assembly 1. An air compressor assembly 10 is installed at the front end of the material transmission mechanism 4.

[0057] The working principle of this embodiment is as follows. When in use, the overall material transmission mechanism 4 is sleeved on the outer wall of the air blowing support mechanism 2, and is clamped and fixed through a plurality of limit posts 208 and the grooves on the rotating sleeve body 401, and the rotation support of the material transmission mechanism 4 is realized through the first plain bearing 206 and the second plain bearing 207. Then, the solid ring assembly 5 is clamped on the top of the outer wall of the air blowing pipe 203, and the limit installation is realized through the groove on the outer wall of the air blowing pipe 203 and the limit block 52. After the solid ring assembly 5 is clamped, it rotates, and the limit block 52 is clamped into the dead corner of the groove to realize the up and down limit of the solid ring assembly 5. Then, the two driving hydraulic cylinders 903 push the corresponding socket rings 904, and then the corresponding first outer mold 607 and the second outer mold 608 are pushed to rotate through the two driving round rods 613 until the first outer mold 607 and the second outer mold 608 rotate and merge between the integrated double-axis plate 602 and the two support bottom shafts 606, and are fixedly locked through the two movable bolt assemblies 611. During the merging process, the limit disk 402 is clamped through the groove to realize sealing, and at the same time, the clamping bearing 403 is squeezed to realize further fixation;

[0058] When merging, the integrated sealing ribs 609 of the first outer mold 607 and the second outer mold 608 are respectively clamped into the notches of each other to seal the gap. Then, the integrated circular plate 8 is installed on the tops of the first outer mold 607 and the second outer mold 608. Then, the integrated circular plate 8 is fixed by a plurality of second fixing bolt assemblies 610. When extruding the material, the complete integrated circular plate 8 will not affect the molten material caused by the gap. Finally, rotate the two locking bolts 704, thereby driving the two push plates 705 to squeeze the integrated double-groove plate 703, so as to generate a thrust on the overall conical pipe 701. The tight fit between the other end of the conical pipe 701 and the first outer mold 607 and the second outer mold 608 is realized through the conical surface, and then the injection molding machine can be connected through the integrated connecting flange 706;

[0059] During operation, the molten material enters the mold cavity formed by the conical pipe 701, the first outer mold 607, the second outer mold 608 and the rotating sleeve body 401. At the same time, the driving motor 603 drives the bevel gear 604 to rotate, thereby driving the integrated bevel gear ring 404 engaged therewith, so as to drive the overall material transmission mechanism 4 to rotate. The rotating integrated spiral blade 405 will continuously output the molten material upward. Finally, it is extruded between the outer wall of the solid ring assembly 5 and the integrated circular plate 8. The worker pulls out the extruded material until a complete packaging bag is pulled out, ties the packaging bag to the towing rope, and winds it through components such as the squeezing roller. During the film blowing process, the air compressor assembly 10 continuously inputs gas into the interior of the mechanism housing 301 through the connecting pipe 303, and then is guided by a plurality of spiral guide plates 305. Finally, it is output spirally upward through the conical guide sleeve 302. The gas is made more uniform through the evenly distributed spiral assembly 204, and finally is output from the solid ring assembly 5 at the top to start cooling the extruded packaging bag. The gas finally outputs downward from the air outlet pipe 205 and finally outputs from the output pipe 304;

[0060] During subsequent cleaning, loosen the two locking bolts 704, then disassemble the two movable bolt assemblies 611 and the integrated circular plate 8 respectively. Pull the first outer mold 607 and the second outer mold 608 respectively through the two driving hydraulic cylinders 903, so as to open the first outer mold 607 and the second outer mold 608, remove the solid ring assembly 5 and the overall material transmission mechanism 4, and then the cleaning of the disassembled and opened multiple components can be started.

[0061] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A packaging bag blown film device, comprising a workbench assembly (1), the workbench assembly (1) includes a support workbench (101), a plurality of first fixing bolt assemblies (102) are installed at the center of the top of the support workbench (101), and limiting guide rails (103) are fixedly connected to both the front and rear ends of the center of the top of the support workbench (101), characterized in that: At the center of the top of the workbench component (1), there is a blowing and supporting mechanism (2) fixedly connected. The blowing and supporting mechanism (2) includes a fixed disk (201) fixedly connected to the top of the supporting workbench (101). At the bottom and top of the fixed disk (201), there are a bottom connecting part (202) and a blowing pipeline (203) fixedly connected respectively. At the bottom of the inner wall of the blowing pipeline (203), there is a uniformly distributed spiral component (204) fixedly connected. On the outer wall of the uniformly distributed spiral component (204), there is an air outlet pipeline (205) fixedly connected. On the outer wall of the blowing pipeline (203), there are a first plain bearing (206) and a second plain bearing (207) fixedly connected respectively. On the top of both the first plain bearing (206) and the second plain bearing (207), there are a plurality of limiting columns (208) fixedly connected. At the bottom of the blowing and supporting mechanism (2), there is an air guiding mechanism (3) fixedly connected. The air guiding mechanism (3) includes a mechanism housing (301) fixedly connected to the bottom of the blowing and supporting mechanism (2). At the center of the bottom of the mechanism housing (301), there is a conical guiding sleeve (302) fixedly connected. On the outer wall of the mechanism housing (301), there is a connecting pipeline (303) fixedly connected. At the bottom of the conical guiding sleeve (302), there is an output pipeline (304) fixedly connected. Between the inner wall of the mechanism housing (301) and the conical guiding sleeve (302), there are a plurality of spiral guiding plates (305) fixedly connected. The mechanism housing (301) and the conical guiding sleeve (302) are of an integral structure, and the other end of the connecting pipeline (303) is fixedly connected to the output end of the air compressor assembly (10). The outer wall of the blowing and supporting mechanism (2) is rotationally connected with a material transmission mechanism (4). The material transmission mechanism (4) includes a rotating sleeve body (401) rotationally connected to the outer wall of the air guiding mechanism (3). At the bottom of the outer wall of the rotating sleeve body (401), there are a limiting disk (402) and a clamping bearing (403) fixedly connected respectively. At the bottom of the rotating sleeve body (401), there is an integral bevel gear ring (404) fixedly connected. On the outer wall of the rotating sleeve body (401), there is an integral spiral blade (405); On the outer wall of the blowing and supporting mechanism (2) at the top of the material transmission mechanism (4), there is a solid ring assembly (5) installed. On one side of the top of the workbench component (1), there is an outer mold and driving mechanism (6) fixedly connected. The outer mold and driving mechanism (6) includes a fixed frame (601) installed on one side of the top of the workbench component (1) and a rotating support block (605) fixedly connected to the top of the workbench component (1). At the top of the fixed frame (601), there is an integral double-shaft plate (602) fixedly connected. At the top of the rotating support block (605), there are two supporting bottom shafts (606) fixedly connected. Between the two supporting bottom shafts (606) and the integral double-shaft plate (602), there are a first outer mold (607) and a second outer mold (608) rotationally connected respectively; One side of the outer mold and the driving mechanism (6) is provided with a feeding connection mechanism (7). The top of the outer mold and the driving mechanism (6) is fixedly connected with an integrated circular plate (8). Both the front and rear ends of one side of the top of the workbench assembly (1) are provided with opening and closing driving mechanisms (9). The front end of the material transmission mechanism (4) is provided with an air compressor assembly (10).

2. The blown film device for packaging bags according to claim 1, characterized in that, The solid ring assembly (5) includes an extended solid ring (51). A plurality of limiting blocks (52) are fixedly connected to the inner wall of the extended solid ring (51). A plurality of grooves corresponding to the limiting blocks (52) are formed in the outer wall of the air blowing pipeline (203).

3. The blown film device for packaging bags according to claim 1, characterized in that, The outer mold and the driving mechanism (6) further includes a driving motor (603) fixedly connected between one side of the fixed frame (601) and the top of the workbench assembly (1). The output end of the driving motor (603) is fixedly connected with a bevel gear (604). Integral sealing ridges (609) are fixedly connected to the mutually corresponding sides of the first outer mold (607) and the second outer mold (608). Two second fixing bolt assemblies (610) are fixedly connected to the tops of the first outer mold (607) and the second outer mold (608). Two movable bolt assemblies (611) are installed on the other side of the first outer mold (607) and the second outer mold (608). Threaded sleeves (612) are fixedly connected to the sides of the first outer mold (607) and the second outer mold (608) close to the feeding connection mechanism (7). Driving round rods (613) and guiding support blocks (614) are respectively fixedly connected to the bottoms of the first outer mold (607) and the second outer mold (608).

4. The blown film device for packaging bags according to claim 3, characterized in that, The integral sealing ridges (609) of the first outer mold (607) and the second outer mold (608) are fixed in opposite directions. Corresponding card slots are formed in the other sides of the first outer mold (607) and the second outer mold (608) on the sides of their integral sealing ridges (609). Grooves corresponding to the feeding connection mechanism (7) are formed in one side of the first outer mold (607) and the second outer mold (608).

5. The blown film device for packaging bags according to claim 1, characterized in that, The feeding connection mechanism (7) includes a conical pipeline (701). A positioning block (702) is fixedly connected to the top of the conical pipeline (701). An integral double-groove plate (703) is fixedly connected to the center of the outer wall of the conical pipeline (701). Locking bolts (704) are arranged at both the front and rear ends of the conical pipeline (701). Push plates (705) are fixedly connected to the outer walls of the two locking bolts (704). The other end of the conical pipeline (701) is fixedly connected with an integral connecting flange (706).

6. The blown film device for packaging bags according to claim 1, characterized in that, The opening and closing driving mechanism (9) includes a shaft seat fixed sleeve (901) rotatably connected to the top of the workbench assembly (1) and a limit fixed sleeve (902) slidably connected to the top of the workbench assembly (1). A driving hydraulic cylinder (903) is installed between the shaft seat fixed sleeve (901) and the limit fixed sleeve (902). The output end of the driving hydraulic cylinder (903) is fixedly connected with a socket ring (904).

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