Plastic film blow molding machine and blow molding process

Abstract

The present invention belongs to the technical field of film blow molding, and specifically relates to a plastic film blow molding machine and a blow molding process, including a frame, a machine head is arranged under the frame; a feed port is opened on the surface of the machine head; the machine head is used to blow the film raw material into a film tube; the machine head is fixedly connected to the frame; a cooling air ring is installed at the upper end of the machine head; a traction device is installed at the upper end of the frame; the traction device is used to pull the film tube blown by the machine head; the present invention sets a protective module, so that the protective module can protect the film tube flattened by the herringbone plate, reduce the sliding friction between the film tube and the herringbone plate, not only reduce the wear of the film tube caused by the herringbone plate, improve the production quality of the film, but also reduce the shaking of the film tube, ensure that the film tube is stably stretched and raised, thereby reducing the problem of wrinkles in the film tube, so that the practicality of the present invention is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of film blowing, and in particular relates to a plastic film blowing molding machine and a blowing molding process. Background Art

[0002] In the process of plastic film production, film blowing is an indispensable stage. Film blowing is to melt high-barrier film particles through an extruder and squeeze them into the die, which is blown out from the die and cooled by an air ring to form a film tube. However, before the film blowing process, the staff needs to intercept a part of the film tube from the traction roller so that the end of the film tube away from the traction roller is just located at the die. At this time, the staff pulls out the film tube blown out of the die by hand, and tightens the pulled film tube to make one end sealed, and then ties one end of the retained film tube to the tightened end of the film tube blown out of the die, so that the staff located above the frame can pull the retained film tube, so that the retained film tube drives the film tube blown out of the die to move upward.

[0003] Moreover, the existing traction device moves the film tube to the herringbone plate when traction, so that the herringbone plate clamps the circular film tube flat, thereby facilitating the winding mechanism to roll the extruded film tube into a tube; however, when the herringbone plate clamps the circular film tube, friction will be generated between the herringbone plate and the circular film tube, which will not only cause the film tube to swing, but also cause the film tube blown out by the lower head to shake, so that the newly blown film tube is stretched due to the shaking, thereby causing the problem of film tube wrinkles; it will also directly cause wear on the film tube, reducing the production quality of the film tube, thereby causing limitations to this technical solution.

[0004] In view of this, the present invention proposes a plastic film blow molding machine and a blow molding process to solve the above technical problems. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, the present invention proposes a plastic film blow molding machine and a blow molding process. The blow molding machine used in the present invention is equipped with a protective module so that the protective module can protect the film tube flattened by the herringbone plate, thereby reducing the sliding friction between the film tube and the herringbone plate. This not only reduces the wear of the film tube caused by the herringbone plate and improves the production quality of the film, but also reduces the shaking of the film tube, ensuring that the film tube is stably stretched and risen, thereby reducing the problem of wrinkles in the film tube, thereby effectively improving the practicality of the present invention.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a plastic film blow molding machine described in the present invention comprises:

[0007] A frame, a machine head is provided under the frame; a feed port is provided on the surface of the machine head; the machine head is used to blow the film raw material into a film tube; the machine head is fixedly connected to the frame; a cooling air ring is installed on the upper end of the machine head; a traction device is installed on the upper end of the frame; the traction device is used to pull the film tube blown by the machine head; a herringbone plate is installed between the machine head and the traction device; the herringbone plate is installed on the frame through a driving device; the driving device is used to drive the herringbone plate to flip and move left and right;

[0008] A feeding mechanism, which is mounted on the upper end of the frame; the feeding mechanism is used to pull the film tube extruded from the die head to the pulling device;

[0009] A protection module, the protection module is installed on the side of the herringbone plate close to each other; the protection module is used to reduce the friction between the film cylinder and the herringbone plate;

[0010] A controller is used to control the automatic operation of the entire plastic film blow molding machine.

[0011] Preferably, the feeding mechanism comprises:

[0012] The clamping plate; a transmission motor is installed on the upper end of the frame; a steel wire rope is fixedly connected to the output end of the transmission motor; an end of the steel wire rope away from the transmission motor is fixedly connected to the clamping plate; a through slot is opened on the upper end of the clamping plate; a U-shaped plate is installed in the through slot;

[0013] Clamping modules, the clamping modules are distributed on both sides of the U-shaped plate; the clamping modules are installed on the inner wall of the through groove; the clamping modules are used to clamp the blown film tube;

[0014] The adsorption module is installed at the lower end of the clamping plate; the adsorption module is used to adsorb the clamping plate onto the machine head.

[0015] Preferably, the clamping module includes clamping plates; there are two groups of clamping plates and each group has two clamping plates; each group of clamping plates is rotatably connected to the inner wall of the through groove by a torsion spring; mutually attractive magnetic strips are installed on the sides of two adjacent clamping plates that are away from each other; and electromagnets are fixedly connected to both sides of the lower end surface of the clamping plate.

[0016] Preferably, the clamping module includes a bracket and a viscous tube; the viscous tube is made of TRP material, and there are two groups of brackets with two in each group; two adjacent brackets are rotatably connected in the through groove through a torsion spring; the viscous tube is rotatably connected to one end of the bracket away from the torsion spring.

[0017] Preferably, the adsorption module includes a rubber suction cup and a fixing rod; one end of the fixing rod is fixedly connected to the clamping plate, and the other end is provided with a mounting groove; a telescopic rod is slidably connected in the mounting groove; the telescopic rod is fixedly connected to the bottom of the mounting groove by a spring; and one end of the telescopic rod away from the fixing rod is fixedly connected to the rubber suction cup.

[0018] Preferably, the telescopic rod is slidingly and sealingly connected in the mounting groove; an air duct is opened in the telescopic rod; one end of the air duct is connected to the mounting groove, and the other end is connected to the outside through a rubber suction cup; an electromagnetic suction cup is fixedly connected to the bottom of the mounting groove; an iron sheet is fixedly connected to one end of the telescopic rod close to the mounting groove.

[0019] Preferably, the protection module includes an air film roller; a groove is provided on the side of the herringbone plates close to each other; the air film roller is rotatably connected in the groove; the air film roller includes a roller shaft and a roller made of PTFE film material; and the roller is fixedly connected to the surface of the roller shaft.

[0020] Preferably, a thread groove is provided on the surface of the roller; and the spiral directions of the thread grooves at both ends of the roller are arranged in opposite directions.

[0021] The invention discloses a plastic film blow molding process, which is applicable to a blow molding machine equipped with a clamping sheet, and is characterized in that the process steps are as follows:

[0022] S1: The staff first controls the driving device through the controller to drive the herringbone plates to flip to a state parallel to each other, and then controls the transmission motor to release the clamping plate, so that the clamping plate passes through the parallel herringbone plates and falls to the upper end of the machine head, and then controls the electromagnet to adsorb the clamping plate, so that the clamping plate opens, and at this time the controller controls the transmission motor to stop;

[0023] S2: The staff starts the extruder and pours the raw materials required for film blowing into the extruder, so that the extruder melts the film raw materials and squeezes them into the die, so that the die blows the film raw materials into a film tube, and the cooling air ring blows the film tube out of the blowing port of the die. The staff spreads the blown film tube on the upper end surface of the die through a tool. At this time, the controller controls the electromagnet adsorption force to reduce, so that the clamping pieces slide along the upper end surface of the die and approach each other;

[0024] S3: When the clamping plates slide along the upper end surface of the die head and approach each other, the two clamping plates will push the film tubes close to them to continuously approach along the die head surface, so that the film tubes contact each other and are clamped by the two clamping plates. At this time, the controller controls the transmission motor to rotate, so that the transmission motor pulls the clamping plate up through the steel wire rope, so that the clamping plate pulls the blown film tubes to rise through the clamping plates;

[0025] S4: When the clamping plate pulls the film tube over the herringbone plate, the controller controls the driving device to drive the herringbone plate to rotate in the opposite direction, so that the herringbone plate drives the two air film rollers to approach each other, so that the air film rollers contact each other and clamp the film tube flat, and the transmission motor pulls the clamping plate to drive the clamped film tube to rise to the traction device, and the staff removes the film tube on the clamping plate and cuts the wrinkled part of the film tube, and the cut film tube is placed on the traction device;

[0026] S5: The traction device pulls the film tube, so that friction is generated between the film tube and the roller, so that the film tube drives the roller to rotate through the friction force. Since threads are provided at both ends of the roller, when the roller is clamping the film tube, the wrinkled parts on the flat film tube are stretched by the threads at both ends of the roller and become flat.

[0027] S6: The staff places the flat film tube pulled by the pulling device on the winding device, so that the winding device can wind up the film tube.

[0028] The invention discloses a plastic film blow molding process, which is applicable to a blow molding machine equipped with a sticky cylinder, and is characterized in that the process steps are as follows:

[0029] S1: The staff first controls the driving device through the controller to drive the herringbone plates to flip to a state parallel to each other, and then controls the transmission motor to release the clamping plate, so that the clamping plate passes between the parallel herringbone plates and falls to the upper end of the machine head. As the transmission motor continuously releases the wire rope, the clamping plate squeezes the bracket under its own gravity and pushes the viscous cylinder to roll in the opposite direction along the upper end surface of the machine head until the viscous cylinder passes over the blow molding port. At this time, the controller controls the transmission motor to stop;

[0030] S2: The staff starts the extruder and pours the raw materials required for film blowing into the extruder, so that the extruder melts the film raw materials and squeezes them into the die, so that the die blows the film raw materials into a film tube, and the cooling air ring blows the film tube out of the blowing port of the die. The staff spreads the blown film tube on the upper end surface of the die through tools, and the controller controls the transmission motor to rotate in the opposite direction, so that the transmission motor pulls the wire rope to drive the clamping plate to rise. At this time, the brackets approach each other under the torsion of the torsion spring, and the bracket drives the viscous tube to roll along the upper end surface of the die and approach each other;

[0031] S3: When the viscous cylinders roll along the upper end surface of the machine head and approach each other, the two viscous cylinders contact the film cylinders close to them, so that the film cylinders adhere to the surface of the viscous cylinders; and the film cylinders are wound around the viscous cylinders as they roll. When the two viscous cylinders are in contact and adhere to each other, the staff controls the transmission motor to rotate through the controller, so that the transmission motor pulls the clamping plate up through the wire rope, so that the clamping plate pulls the film cylinders that are continuously blown by the viscous cylinders to rise;

[0032] S4: When the sticky tube pulls the film tube over the herringbone plate, the controller controls the driving device to drive the herringbone plate to rotate in the opposite direction, so that the herringbone plate drives the two air film rollers to approach each other, so that the air film rollers contact each other and clamp the film tube flat, and the transmission motor pulls the clamping plate to drive the clamped film tube to rise to the traction device, and the staff removes the film tube from the sticky tube and cuts the wrinkled part of the film tube, and the cut film tube is placed on the traction device;

[0033] S5: The traction device pulls the film tube, so that friction is generated between the film tube and the roller, so that the film tube drives the roller to rotate through the friction force. Since threads are provided at both ends of the roller, when the roller is clamping the film tube, the wrinkled parts on the flat film tube are stretched by the threads at both ends of the roller and become flat.

[0034] S6: The staff places the flat film tube pulled by the pulling device on the winding device, so that the winding device can wind up the film tube.

[0035] The beneficial effects of the present invention are as follows:

[0036] 1. The blow molding machine used in the present invention is equipped with a protective module so that the protective module can protect the film tube flattened by the herringbone plate, thereby reducing the sliding friction between the film tube and the herringbone plate. This not only reduces the wear of the film tube caused by the herringbone plate and improves the production quality of the film, but also reduces the shaking of the film tube, ensuring that the film tube is stably stretched and raised, thereby reducing the problem of wrinkles in the film tube, and effectively improving the practicability of the present invention.

[0037] 2. The blow molding machine used in the present invention is equipped with a clamping plate so that the clamping plate can clamp the film tube blown out by the machine head, so that the clamping plate pulls the film tube up, thereby eliminating the need for workers to stretch the film tube squeezed out by the machine head by hand. This not only avoids the problem of burns caused by the contact between the workers' fingers and the machine head, but also reduces the problem of waste of film tubes caused by too many wrinkled and unqualified film tubes caused by the workers stretching the film tubes, thereby effectively improving the practicability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0039] Figure 1 It is a flow chart of the use of the blow molding machine equipped with a clamping sheet of the present invention;

[0040] Figure 2 is a flow chart of the use of the blow molding machine equipped with a viscous barrel of the present invention;

[0041] Figure 3is a stereogram of the present invention;

[0042] Figure 4 It is a structural schematic diagram of a blow molding machine equipped with a clamping sheet in the present invention;

[0043] Figure 5 It is a schematic structural diagram of a blow molding machine equipped with a viscous barrel in the present invention;

[0044] Figure 6 yes Figure 4 The enlarged view of point A in the middle;

[0045] Figure 7 It is a schematic diagram of the structure of the rubber suction cup used in the present invention;

[0046] In the figure: 1. frame; 11. machine head; 111. feed port; 12. cooling air ring; 13. transmission motor; 14. wire rope; 2. herringbone plate; 21. air film roller; 211. roller; 212. drum; 22. groove; 23. thread groove; 3. clamping plate; 31. through groove; 32. U-shaped plate; 33. clamping piece; 34. magnetic strip; 35. electromagnet; 36. bracket; 37. adhesive tube; 4. rubber suction cup; 41. fixing rod; 42. mounting groove; 43. telescopic rod; 44. spring; 45. airway; 46. electromagnetic suction cup; 47. iron sheet. DETAILED DESCRIPTION

[0047] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0048] The embodiment of the present invention provides a plastic film blow molding machine, which solves the problem that the friction between the herringbone plate 2 and the circular film cylinder caused by the herringbone plate 2 clamping the circular film cylinder not only causes the film cylinder to swing, but also causes the film cylinder blown by the lower head 11 to shake, so that the film cylinder just blown is stretched by the shaking, thereby causing the film cylinder wrinkles; it also directly causes wear on the film cylinder, reducing the production quality of the film cylinder;

[0049] The technical solution in the embodiment of the present invention is to solve the above technical problems. The overall idea is as follows: by installing a protective module on the side where the herringbone plates 2 are close to each other, the protective module can protect the film cylinder clamped by the herringbone plates 2, reduce the sliding friction between the film cylinder and the herringbone plates 2, not only reduce the wear of the film cylinder caused by the herringbone plates 2, improve the production quality of the film, but also reduce the shaking of the film cylinder, ensure that the film cylinder is stably stretched and raised, thereby reducing the problem of wrinkles on the film cylinder, so that the practicality of the present invention is effectively improved;

[0050] like Figures 1 to 7As shown, a plastic film blow molding machine according to the present invention comprises:

[0051] A frame 1, a head 11 is provided below the frame 1; a feed port 111 is provided on the surface of the head 11; the head 11 is used to blow the film raw material into a film tube; the head 11 is fixedly connected to the frame 1; a cooling air ring 12 is installed on the upper end of the head 11; a traction device is installed on the upper end of the frame 1; the traction device is used to pull the film tube blown by the head 11; a herringbone plate 2 is installed between the head 11 and the traction device; the herringbone plate 2 is installed on the frame 1 through a driving device; the driving device is used to drive the herringbone plate 2 to flip and move left and right;

[0052] A feeding mechanism, which is mounted on the upper end of the frame 1; the feeding mechanism is used to pull the film tube extruded by the head 11 to the pulling device;

[0053] A protection module, the protection module is installed on the side of the herringbone plate 2 that is close to each other; the protection module is used to reduce the friction between the film cylinder and the herringbone plate 2;

[0054] A controller, wherein the controller is used to control the automatic operation of the entire plastic film blow molding machine;

[0055] In the prior art, the traction device pulls the film tube to the herringbone plate 2, so that the circular film tube is clamped flat by the herringbone plate 2, so that the reeling mechanism can reel the extruded film tube into a tube. However, when the herringbone plate 2 clamps the circular film tube, friction will occur between the herringbone plate 2 and the circular film tube, which will not only cause the film tube to swing, but also cause the film tube blown out by the lower head 11 to shake, so that the film tube just blown out is stretched by the shaking, thereby causing the film tube to wrinkle. It will also directly cause wear on the film tube, reducing the production quality of the film tube.

[0056] During operation, in the initial state, the feeding mechanism is located above the herringbone plate 2; the extrusion port of the extruder is connected to the feed port 111 of the head 11; the staff pours the film raw material into the extruder, and at this time, the controller controls the extruder to melt the film raw material and squeeze it into the head 11, so that the head 11 blows the film raw material into a film tube, and when the head 11 blows out the film tube, the cooling air ring 12 located at the upper end of the head 11 cools the film tube into shape, the staff controls the driving device to drive the herringbone plate 2 to open, and then controls the feeding mechanism to descend to the bottom of the herringbone plate 2, and the staff puts the cooled and formed film tube on the feeding mechanism, so that the feeding mechanism can pull the film tube up and over the herringbone plate 2, the controller controls the driving device to drive the herringbone plates 2 to flip and approach each other, so that the side of the herringbone plates 2 that are close to each other clamps the film tube, and the installation The protective module installed on the side of the herringbone plates 2 that are close to each other is in contact with the film cylinder, thereby reducing the friction between the herringbone plates 2 and the film cylinder, reducing the problem of wear of the film cylinder caused by the herringbone plates 2, improving the molding quality of the film cylinder, and reducing the shaking of the film cylinder, avoiding the problem of uneven lateral stretching of the film cylinder caused by the shaking of the film cylinder, ensuring that the film cylinder is evenly stretched, not only avoiding the problem of wrinkles in the film cylinder, but also improving the uniformity of the film thickness of the film cylinder. After the herringbone plates 2 clamp the film cylinder flat, the feeding mechanism pulls the flat film cylinder to the traction device, the staff removes the film cylinder of the feeding mechanism, cuts off one end of the wrinkle of the film cylinder, and then installs the formed and flattened film cylinder on the traction device, controls the traction device through the controller to continuously pull the flat film cylinder, and then curls and collects the pulled film cylinder;

[0057] The present invention provides a protection module so that the protection module can protect the film tube that is flattened by the herringbone plate 2, thereby reducing the sliding friction between the film tube and the herringbone plate 2. This not only reduces the wear of the film tube by the herringbone plate 2 and improves the production quality of the film, but also reduces the shaking of the film tube, ensuring that the film tube is stably stretched and raised, thereby reducing the problem of wrinkles on the film tube, and effectively improving the practicability of the present invention.

[0058] like Figures 3 to 5 As shown, as an embodiment of the present invention, the feeding mechanism includes:

[0059] The clamping plate 3; a transmission motor 13 is installed at the upper end of the frame 1; a steel wire 14 is fixedly connected to the output end of the transmission motor 13; the end of the steel wire 14 away from the transmission motor 13 is fixedly connected to the clamping plate 3; a through slot 31 is opened at the upper end of the clamping plate 3; a U-shaped plate 32 is installed in the through slot 31;

[0060] Clamping modules, which are distributed on both sides of the U-shaped plate 32; the clamping modules are installed on the inner wall of the through slot 31; the clamping modules are used to clamp the blown film tube;

[0061] An adsorption module, which is installed at the lower end of the clamping plate 3; the adsorption module is used to adsorb the clamping plate 3 onto the machine head 11;

[0062] During operation, in the initial state, the steel wire rope 14 is wound around the output end of the transmission motor 13, and the steel wire rope 14 pulls the clamping plate 3 to be located above the herringbone plate 2, and the two adjacent clamping modules are in a clamping state; before the staff pours the film raw material into the extruder, they first control the driving device through the controller to drive the herringbone plate 2 to flip. The driving device in the prior art is two motors, that is, the two herringbone plates 2 are driven to flip by two motors, so that the herringbone plates 2 are in parallel positions with each other, and then the transmission motor 13 is controlled to rotate, so that the steel wire rope 14 wound around the transmission motor 13 is released by the transmission motor 13, and then the clamping plate 3 pulls the released steel wire rope 14 downward under the action of gravity and passes through the parallel herringbone plates 2; as the clamping plate 3 moves downward, the clamping plate 3 drives the adsorption module to descend and approach the machine head 11 until the adsorption module is in contact with the machine head 11 The film tube is then moved to the upper end of the head 11, and the film tube is then moved to the lower ...

[0063] like Figure 3 to Figure 4 As shown in the figure, as an embodiment of the clamping module of the present invention, the clamping module includes a clamping sheet 33; there are two groups of the clamping sheets 33, and each group has two clamping sheets; each group of the clamping sheets 33 is rotatably connected to the inner wall of the through slot 31 through a torsion spring; a mutually attracting magnetic strip 34 is installed on the side away from each other of two adjacent clamping sheets 33; both sides of the lower end surface of the clamping plate 3 are fixedly connected with an electromagnet 35;

[0064] During operation, in the initial state, the two clamping plates 33 are hinged, and the torsion spring is located at the hinge of the two clamping plates 33. The two clamping plates 33 are in a closed state under the action of the torsion force of the torsion spring, and the wire rope 14 is wound around the output end of the transmission motor 13, and the wire rope 14 pulls the clamping plate 3 to be located above the herringbone plate 2, and the two adjacent clamping plates 33 are in a clamped state under the action of the adsorption force of the two magnetic strips 34; before the staff pours the film raw material into the extruder, they first control the driving device through the controller to drive the herringbone plate 2 to flip so that the herringbone plate 2 is in a position parallel to each other, and then control the transmission motor 13 to rotate so that the wire rope 14 wound around the transmission motor 13 is released by the transmission motor 13, and then the clamping plate 3 pulls the released wire rope 14 downward under the action of gravity and passes through between the parallel herringbone plates 2; as the clamping plate 3 moves downward until the adsorption module contacts the machine head 11 and is adsorbed on the machine head 11, at this time, the end of the clamping plate 33 away from the torsion spring contacts the machine head 11, and at this time, the control The device controls the electromagnet 35 to be energized, so that the magnetic force generated by the electromagnet 35 on the magnetic strip 34 is greater than the combined force of the magnetic force between the magnetic strips 34 and the torsion force of the torsion spring, so that the electromagnet 35 at the lower end of the clamping plate 3 generates a suction force on the magnetic strip 34 on the clamping piece 33, so that the magnetic strip 34 drives the two clamped clamping pieces 33 to open under the action of the magnetic force of the electromagnet 35. At this time, the electromagnet 35 generates an adsorption force on the machine head 11, so that the electromagnet 35 pulls the clamping plate 3 close to the machine head 11, and the clamping piece 33 is always Sliding along the upper end surface of the machine head 11, since the clamping plate 3 is always subjected to the pulling force of the steel wire rope 14, the speed at which the clamping plate 3 moves downward is equal to the speed at which the transmission motor 13 releases the steel wire rope 14. Therefore, when the closed clamping piece contacts the machine head, by controlling the magnitude of the current passed into the electromagnet 35, it is ensured that the speed at which the electromagnet 35 adsorbs the clamping piece 33 to open is not less than the speed at which the transmission motor 13 releases the steel wire rope 14, thereby ensuring that the closed clamping piece 33 will not be blocked by the machine head 11 and can be opened smoothly;When both ends of the clamping piece 33 are opened and pass over the blow molding port of the machine head 11, the controller controls the transmission motor 13 to stop, and the staff controls the extruder through the controller to melt the film raw material and squeeze it into the machine head 11, so that the machine head 11 blows the film raw material into a film tube, and the cooling air ring 12 cools the film tube into shape. The staff uses a tool to blow out the blow molding port and place the cooled film tube on the upper end of the machine head 11. At this time, the controller controls the current of the electromagnet 35 to be continuously reduced, which not only makes the opened clamping piece 33 shrink continuously, but also makes the adsorption module push the clamping plate 3 up under the action of its own restoring force, so that the clamping piece 3 The opened end 3 slides along the upper surface of the machine head 11 toward the center of the machine head 11, so that the two clamping pieces 33 push the tube wall of the film tube blown by the machine head 11 to approach, until the current of the electromagnet 35 disappears, at this time, the two clamping pieces 33 are in a clamping state, and the film tube is clamped by the clamping pieces 33, at this time, the controller drives the motor 13 to rotate, so that the drive motor 13 drives the clamping plate 3 to rise by pulling the wire rope 14, so that the clamping plate 3 pulls the film tube to rise through the clamping piece 33, until the clamping plate 3 passes over the herringbone plate 2, the controller controls the driving device to drive the herringbone plate 2 to rotate in the opposite direction, so that the herringbone plate 2 clamps the film tube flat;

[0065] The present invention arranges the clamping plate 33 so that the clamping plate 33 can clamp the film tube blown out by the machine head 11, so that the clamping plate 33 pulls the film tube up, thereby eliminating the need for the staff to stretch the film tube squeezed out by the machine head 11 by hand. This not only avoids the problem of burns caused by the contact between the staff's fingers and the machine head 11, but also reduces the problem of waste of film tubes caused by too many wrinkled and unqualified film tubes caused by the staff manually stretching the film tube, thereby effectively improving the practicality of the present invention.

[0066] like Figure 5 As shown in FIG. 1 , as another embodiment of the clamping module of the present invention, the clamping module includes a bracket 36 and a viscous tube 37; the viscous tube 37 is made of TRP material, and there are two groups of brackets 36, and each group has two brackets; two adjacent brackets 36 are rotatably connected in the through slot 31 through a torsion spring; the viscous tube 37 is rotatably connected to one end of the bracket 36 away from the torsion spring;

[0067] During operation, in the initial state, the two adjacent brackets 36 are in a clamping state, at which time the two viscous cylinders 37 contact each other, and as the clamping plate 3 moves downward, the clamping plate 3 drives the two viscous cylinders 37 to contact the upper end of the machine head 11, and as the transmission motor 13 continues to release the wire rope 14, the clamping plate 3 squeezes the two rotatably connected brackets 36 under the action of its own gravity, so that the two viscous cylinders 37 roll in opposite directions along the upper end surface of the machine head 11 under the support of the machine head 11, and after the viscous cylinder 37 drives the two brackets 36 to overcome the torsion of the torsion spring and open and pass over the blowing port of the machine head 11 under the action of gravity, the controller controls the transmission motor 13 to stop, and the staff controls the extruder through the controller to melt the film raw material and squeeze it into the machine head 11, so that the machine head 11 blows the film raw material into a film cylinder, and makes the cooling air The ring 12 cools and forms the film tube. The staff uses a tool to place the film tube blown out of the blow molding port and cooled on the upper end of the machine head 11. The controller controls the transmission motor 13 to rotate in the opposite direction, so that the transmission motor 13 pulls the clamping plate 3 up through the wire rope 14, so that the two adjacent brackets 36 are slowly clamped under the action of the torsion spring restoring force, so that the two brackets 36 drive the viscous tube 37 to roll along the upper end surface of the machine head 11 and approach each other, so that the viscous tube 37 contacts the film tube at the upper end of the machine head 11. Since the viscous tube 37 is made of TPR material, the film tube will adhere to the viscous tube 37 and be wound around the viscous tube 37 as the viscous tube 37 rolls, until the two viscous tubes 37 approach each other and clamp the film tube wrapped around the two viscous tubes 37, so that the viscous tube 37 can drive the film tube to rise.

[0068] like Figure 7 As shown, as an embodiment of the present invention, the adsorption module includes a rubber suction cup 4 and a fixing rod 41; one end of the fixing rod 41 is fixedly connected to the clamping plate 3, and the other end is provided with a mounting groove 42; a telescopic rod 43 is slidably connected in the mounting groove 42; the telescopic rod 43 is fixedly connected to the bottom of the mounting groove 42 by a spring 44; the end of the telescopic rod 43 away from the fixing rod 41 is fixedly connected to the rubber suction cup 4;

[0069] During operation, the rubber suction cup 4 moves downward under the drive of the clamping plate 3 until the clamping plate 3 is located above the machine head 11. At this time, the staff pushes the clamping plate 3 through a tool so that the center of the clamping plate 3 is aligned with the center of the machine head 11 until the rubber suction cup 4 contacts the machine head 11. The clamping plate 3 squeezes the rubber suction cup 4 under the action of gravity so that the rubber suction cup 4 is adsorbed on the machine head 11. For the clamping plate 3 equipped with the electromagnet 35, the staff controls the electromagnet 35 to be energized through the controller. At this time, the electromagnet 35 adsorbs the two The magnetic strip 34 on the clamping piece 33 causes the magnetic strip 34 to drive the two clamped clamping pieces 33 to overcome the torsion force of the torsion spring and open. As the transmission motor 13 continuously releases the wire rope 14, the clamping plate 3 moves downward and approaches the machine head 11 under the action of its own gravity. As the opened clamping piece 33 contacts the machine head 11, the clamping plate 3 is blocked from contacting the machine head 11. In the process of the clamping plate 3 approaching the machine head 11, the clamping plate 3 pushes the fixing rod 41, so that the fixing rod 41 squeezes the spring 44, so that the telescopic rod 43 and the fixing rod 41 are pressed together. The fixed rod 41 is relatively displaced, so that the telescopic rod 43 enters the installation groove 42; when the opened clamping piece 33 clamps the film tube blown out of the machine head 11, the two clamping pieces 33 slide along the upper end surface of the machine head 11 and push the clamping plate 3 to move away from the machine head 11. At this time, the spring 44 pushes the fixed rod 41 to rise, so that the telescopic rod 43 extends out of the installation groove 42. When the transmission motor 13 is running, the transmission motor 13 pulls the clamping plate 3 through the wire rope 14 to drive the fixed rod 41 to rise, so that the fixed rod 41 passes through the spring The spring 44 pulls the telescopic rod 43 to drive the rubber suction cup 4 to move upward, thereby separating the rubber suction cup 4 from the machine head 11. Similarly, for the clamping plate 3 equipped with the adhesive tube 37, the rubber suction cup 4 can still adsorb the machine head 11, thereby ensuring that when the clamping plate 3 squeezes the adhesive tube 37 and rolls, the clamping plate 3 will not shake, ensuring that the two adhesive tubes 37 can pass through the blowing port of the machine head 11, and further ensuring that the adhesive tube 37 adheres to and clamps the blown film tube, thereby effectively improving the actual application effect of the present invention.

[0070] like Figure 7 As shown, as an embodiment of the present invention, the telescopic rod 43 is slidably sealed and connected in the mounting groove 42; an air passage 45 is provided in the telescopic rod 43; one end of the air passage 45 is connected to the mounting groove 42, and the other end passes through the rubber suction cup 4 and is connected to the outside; an electromagnetic suction cup 46 is fixedly connected to the bottom of the mounting groove 42; an iron sheet 47 is fixedly connected to one end of the telescopic rod 43 close to the mounting groove 42;

[0071] During operation, the speed at which the electromagnetic suction cup 46 absorbs the telescopic rod 43 and enters the installation groove 42 is greater than the release speed of the wire rope 14; the rubber suction cup 4 moves downward under the drive of the clamping plate 3 and contacts the machine head 11; at this time, the controller controls the electromagnetic suction cup 46 to be energized, so that the electromagnetic suction cup 46 generates a magnetic force on the iron sheet 47, so that the iron sheet 47 drives the telescopic rod 43 to squeeze the spring 44 and enter the installation groove 42 under the action of the magnetic force, so that the telescopic rod 43 squeezes the gas in the installation groove 42 into the airway 45, so that the gas is ejected from the end of the airway 45 close to the rubber suction cup 4, so that the gas is sprayed toward the machine head 11, and then the residual dust and other solid particles on the machine head 11 are cleaned; because the speed at which the electromagnetic suction cup 46 absorbs the telescopic rod 43 and enters the installation groove 42 is greater than the release speed of the wire rope 14; therefore, when the telescopic rod 43 enters the installation groove 42, the telescopic rod 43 will drive the rubber suction cup 4 to move upward away from the machine head 11; at this time, the rubber suction cup 4 in the jet state continuously jets the machine head 11 until the telescopic rod 43 is completely The rubber suction cup 4 is fully inserted into the installation groove 42. At this time, the telescopic rod 43 no longer drives the rubber suction cup 4 to rise, and as the steel wire rope 14 is continuously released, the rubber suction cup 4 moves downward synchronously with the entire clamping plate 3; until the rubber suction cup 4 contacts the upper end surface of the machine head 11, then the controller controls the electromagnetic suction cup 46 to cut off the power, so that the telescopic rod 43 pushes the rubber suction cup 4 to be close to the upper end surface of the machine head 11 under the action of the restoring force of the spring 44. At this time, the rubber suction cup 4 adsorbs the clean part of the machine head 11, thereby preventing the machine head 11 from being damaged. The residual solid particles prevent the suction cup from being adsorbed on the machine head 11, causing the clamping plate 3 to shift when the clamping piece 33 is opened due to the loose adsorption of the rubber suction cup 4, thereby ensuring that the opened clamping piece 33 can pass over the cooling air ring 12 of the machine head 11 where it is located, thereby ensuring the cooling effect of the cooling air ring 12 on the film tube, preventing the film tube that has not been completely cooled from being pinched off by the clamping piece 33, and ensuring that the clamping piece 33 can clamp and pull up the film tube, thereby improving the actual application effect of the present invention.

[0072] like Figure 6 As shown, as an embodiment of the present invention, the protection module includes an air film roller 21; a groove 22 is provided on a side of the herringbone plate 2 that is close to each other; the air film roller 21 is rotatably connected in the groove 22; the air film roller 21 includes a roller 211 and a roller 212 made of PTFE film material; the roller 212 is fixedly connected to the surface of the roller 211;

[0073] During operation, when the clamping plate 3 pulls the thin roller 212 over the herringbone plate 2, the controller controls the driving device to drive the two herringbone plates 2 to approach each other, so that the herringbone plate 2 drives the air film roller 21 to approach each other, so that the roller 212 of the air film roller 21 approaches each other and contacts the film tube, so that the round film tube becomes flat under the squeezing of the two air film rollers 21, and the staff installs the flat film tube on the traction device. As the traction device pulls the flat film tube, the blown film tube continuously moves from between the two rollers 212, so that the film tube drives the roller 212 to rotate through the friction force, so that the roller 212 rotates along the roller 211, so that the sliding friction between the roller 212 and the film tube is converted into rolling friction; because the friction force on the roller 212 when rolling is less than that on the roller 21 2 The friction force encountered during sliding, therefore, the limit static friction force before the rolling friction of the roller 212 begins to occur is less than the limit static friction force before the sliding friction begins to occur. Therefore, when the film drum passes between the two rollers 212 and generates friction with the two rollers 212, the limit static friction force generated between the film drum and the roller 212 will not exceed the limit static friction force of the roller 212 when the sliding friction begins to occur. Therefore, when the device is operating normally, rolling friction occurs between the film drum and the roller 212; therefore, the problem of film drum wear caused by sliding friction between the film drum and the roller 212 is avoided, the production quality of the film is improved, the shaking of the film drum is reduced, and it is ensured that the film drum is stably stretched and raised, thereby reducing the problem of wrinkles in the film drum, so that the practicality of the present invention is effectively improved.

[0074] like Figure 1 and Figure 6 As shown, as an embodiment of the present invention, a thread groove 23 is provided on the surface of the roller 212; the spiral directions of the thread grooves 23 at both ends of the roller 212 are opposite;

[0075] During operation, as the film tube drives the roller 212 to rotate through the friction force, the roller 212 drives the thread grooves 23 at both ends to rotate, so that the thread grooves 23 at both ends will stretch the wrinkled parts of the flat film tube in contact with them. Since when the flat film tube is wrinkled, its wrinkled parts will protrude from the plane of the flat film tube, so that the wrinkled parts of the flat film tube will extend into the thread groove 23 of the roller 212 during the rolling process of the roller 212, so that when the thread groove 23 rolls with the roller 212, the side walls of the thread groove 23 can push the wrinkled film tube deep in the thread groove 23 to move toward the two ends of the roller 212, so that the wrinkled parts of the flat film tube that extend into the thread groove 23 are stretched toward the two ends of the roller 212 under the push of the side walls of the thread groove 23, so that the wrinkled parts of the film tube due to shaking can be stretched and approached to flatness under the push of the side walls of the thread groove 23, thereby improving the flatness of the film tube, improving the quality of the film tube, and improving the practicality of the present invention.

[0076] A plastic film blow molding process shown in the present invention is applicable to a blow molding machine equipped with a clamping sheet 33, and the steps of the process are as follows:

[0077] S1: The staff first controls the driving device through the controller to drive the herringbone plates 2 to flip to a mutually parallel state, and then controls the transmission motor 13 to release the clamping plate 3, so that the clamping plate 3 passes through the mutually parallel herringbone plates 2 and falls to the upper end of the machine head 11, and controls the electromagnet 35 to adsorb the clamping sheet 33, so that the clamping sheet 33 opens, and at this time the controller controls the transmission motor 13 to stop;

[0078] S2: The staff starts the extruder and pours the raw materials required for film blowing into the extruder, so that the extruder melts the film raw materials and squeezes them into the die head 11, so that the die head 11 blows the film raw materials into a film tube, and the cooling air ring 12 blows the film tube out of the blowing port of the die head 11. The staff spreads the blown film tube on the upper end surface of the die head 11 through a tool. At this time, the controller controls the adsorption force of the electromagnet 35 to reduce, so that the clamping piece 33 slides along the upper end surface of the die head 11 and approaches each other;

[0079] S3: When the clamping pieces 33 slide along the upper end surface of the die head 11 and approach each other, the two clamping pieces 33 will push the film tubes close to them to continuously approach along the surface of the die head 11, so that the film tubes contact each other and are clamped by the two clamping pieces 33. At this time, the controller controls the transmission motor 13 to rotate, so that the transmission motor 13 pulls the clamping plate 3 upward through the steel wire rope 14, so that the clamping plate 3 pulls the blown film tubes upward through the clamping pieces 33;

[0080] S4: When the clamping plate 33 pulls the film tube over the herringbone plate 2, the controller controls the driving device to drive the herringbone plate 2 to rotate in the opposite direction, so that the herringbone plate 2 drives the two air film rollers 21 to approach each other, so that the air film rollers 21 contact each other and clamp the film tube flat, and the transmission motor 13 pulls the clamping plate 3 to drive the clamped film tube to rise to the traction device, and the staff removes the film tube on the clamping plate 33 and cuts the wrinkled part of the film tube, and the cut film tube is placed on the traction device;

[0081] S5: The traction device pulls the film tube, so that friction is generated between the film tube and the roller 212, so that the film tube drives the roller 212 to rotate through the friction force. Since the roller 212 has threads at both ends, when the roller 212 is flattening the film tube, the wrinkled parts on the flat film tube are stretched by the threads at both ends of the roller 212 and become flat.

[0082] S6: The staff places the flat film tube pulled by the pulling device on the winding device, so that the winding device can wind up the film tube.

[0083] A plastic film blow molding process shown in the present invention is applicable to a blow molding machine equipped with a viscous cylinder 37, and the steps of the process are as follows:

[0084] S1: The staff first controls the driving device through the controller to drive the herringbone plates 2 to flip to a mutually parallel state, and then controls the transmission motor 13 to release the clamping plate 3, so that the clamping plate 3 passes between the mutually parallel herringbone plates 2 and falls to the upper end of the machine head 11. As the transmission motor 13 continuously releases the wire rope 14, the clamping plate 3 squeezes the bracket 36 under its own gravity and pushes the viscous cylinder 37 to roll in the opposite direction along the upper end surface of the machine head 11 until the viscous cylinder 37 passes over the blow molding port. At this time, the controller controls the transmission motor 13 to stop;

[0085] S2: The staff starts the extruder and pours the raw materials required for film blowing into the extruder, so that the extruder melts the film raw materials and squeezes them into the die head 11, so that the die head 11 blows the film raw materials into a film tube, and the cooling air ring 12 blows the film tube out of the blowing port of the die head 11. The staff spreads the blown film tube on the upper end surface of the die head 11 through a tool, and the controller controls the transmission motor 13 to rotate in the opposite direction, so that the transmission motor 13 pulls the wire rope 14 to drive the clamping plate 3 to rise. At this time, the brackets 36 approach each other under the torsion of the torsion spring, and the brackets 36 drive the viscous tube 37 to roll along the upper end surface of the die head 11 and approach each other;

[0086] S3: When the viscous cylinders 37 roll along the upper end surface of the machine head 11 and approach each other, the two viscous cylinders 37 contact with the film cylinders close to them, so that the film cylinders adhere to the surface of the viscous cylinders 37; and the film cylinders roll with the viscous cylinders 37 and are wound around the viscous cylinders 37. When the two viscous cylinders 37 are in contact and adhere to each other, the staff controls the transmission motor 13 to rotate through the controller, so that the transmission motor 13 pulls the clamping plate 3 up through the wire rope 14, so that the clamping plate 3 pulls the film cylinders that are continuously blown up through the viscous cylinders 37 to rise;

[0087] S4: When the sticky tube 37 pulls the film tube over the herringbone plate 2, the controller controls the driving device to drive the herringbone plate 2 to rotate in the opposite direction, so that the herringbone plate 2 drives the two air film rollers 21 to approach each other, so that the air film rollers 21 contact each other and clamp the film tube flat, and the transmission motor 13 pulls the clamping plate 3 to drive the clamped film tube to rise to the traction device, and the staff removes the film tube from the sticky tube 37 and cuts the wrinkled part of the film tube, and the cut film tube is placed on the traction device;

[0088] S5: The traction device pulls the film tube, so that friction is generated between the film tube and the roller 212, so that the film tube drives the roller 212 to rotate through the friction force. Since the roller 212 has threads at both ends, when the roller 212 is flattening the film tube, the wrinkled parts on the flat film tube are stretched by the threads at both ends of the roller 212 and become flat.

[0089] S6: The staff places the flat film tube pulled by the pulling device on the winding device, so that the winding device can wind up the film tube.

[0090] The specific workflow is as follows:

[0091] In the initial state, the feeding mechanism is located above the herringbone plate 2; the extrusion port of the extruder is connected to the feed port 111 of the die head 11; the staff pours the film raw material into the extruder, and at this time, the controller controls the extruder to melt the film raw material and squeeze it into the die head 11, so that the die head 11 blows the film raw material into a film tube, and when the die head 11 blows out the film tube, the cooling air ring 12 located at the upper end of the die head 11 cools the film tube into shape, the staff controls the driving device to drive the herringbone plate 2 to open, and then controls the feeding mechanism to descend to the bottom of the herringbone plate 2, and the staff covers the cooled and formed film tube On the feeding mechanism, when the feeding mechanism is able to pull the film tube up and pass over the herringbone plate 2, the controller controls the driving device to drive the herringbone plate 2 to flip and approach each other, so that the side of the herringbone plate 2 that is close to each other clamps the film tube flat, and the protection module installed on the side of the herringbone plate 2 that is close to each other contacts with the film tube, thereby reducing the friction between the herringbone plate 2 and the film tube, reducing the problem of wear of the film tube caused by the herringbone plate 2, improving the molding quality of the film tube, and reducing the shaking of the film tube, avoiding the problem of uneven lateral stretching of the film tube caused by the shaking of the film tube, and ensuring that the film tube is evenly stretched. Stretching not only avoids the problem of wrinkles on the film tube, but also improves the uniformity of the film thickness of the film tube. After the herringbone plate 2 clamps the film tube flat, the feeding mechanism pulls the flat film tube to the traction device. The staff removes the film tube from the feeding mechanism, cuts off one end of the wrinkle of the film tube, and then installs the formed and flattened film tube on the traction device. The traction device is controlled by the controller to continuously pull the flat film tube, and then the traction obtained is curled and collected; in the initial state, the wire rope 14 is wound around the output end of the transmission motor 13, and the wire rope 14 pulls the clamping plate 3 Above the herringbone plate 2, two adjacent clamping modules are in a clamping state; before the staff pours the film raw material into the extruder, the controller controls the driving device to drive the herringbone plate 2 to flip. The driving device in the prior art is two motors, that is, the two motors drive the two herringbone plates 2 to flip, so that the herringbone plates 2 are in parallel positions, and then the transmission motor 13 is controlled to rotate, so that the steel wire rope 14 wound on the transmission motor 13 is released by the transmission motor 13, and then the clamping plate 3 pulls the released steel wire rope 14 to move downward under the action of gravity and passes through between the parallel herringbone plates 2;As the clamping plate 3 moves downward, the clamping plate 3 drives the adsorption module to descend and approach the machine head 11, until the adsorption module contacts the machine head 11 and is adsorbed on the machine head 11. At this time, the clamping module opens until both ends of the clamping module open and pass over the blow molding port of the machine head 11. At this time, the staff controls the transmission motor 13 to stop through the controller. The staff controls the extruder through the controller to melt the film raw material and squeeze it into the machine head 11, so that the machine head 11 blows the film raw material into a film tube, and the cooling air ring 12 cools and molds the film tube. The staff places the film tube blown out of the blow molding port and cooled at the upper end of the machine head 11. In the process of the controller controlling the clamping module to clamp the film tube, the controller transmission motor 13 rotates, so that the transmission motor 13 drives the clamping plate 3 to rise by pulling the wire rope 14, so that the clamping plate 3 pulls the film tube to rise through the clamping module, until the clamping plate 3 passes over the herringbone plate 2, the controller controls the driving device to drive the herringbone plate 2 to rotate in the opposite direction, so that the herringbone plate 2 clamps the film tube flat. ;

[0092] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A plastic film blow molding process, characterized in that: The steps of the process are as follows: S1: The staff first controls the driving device through the controller to drive the herringbone plates (2) to flip to a mutually parallel state, and then controls the transmission motor (13) to release the clamping plate (3), so that the clamping plate (3) passes through the mutually parallel herringbone plates (2) and falls to the upper end of the machine head (11), and then controls the electromagnet (35) to adsorb the clamping plate (33), so that the clamping plate (33) opens, and at this time the controller controls the transmission motor (13) to stop; S2: The staff starts the extruder and pours the raw materials required for film blowing into the extruder, so that the extruder melts the film raw materials and squeezes them into the die head (11), so that the die head (11) blows the film raw materials into a film tube, and the cooling air ring (12) blows the film tube out of the blowing port of the die head (11). The staff spreads the blown film tube on the upper end surface of the die head (11) by means of a tool. At this time, the controller controls the adsorption force of the electromagnet (35) to decrease, so that the clamping plates (33) slide along the upper end surface of the die head (11) and approach each other; S3: When the clamping plates (33) slide along the upper end surface of the machine head (11) and approach each other, the two clamping plates (33) will push the film tubes close to them to continuously approach each other along the surface of the machine head (11), so that the film tubes contact each other and are clamped by the two clamping plates (33). At this time, the controller controls the transmission motor (13) to rotate, so that the transmission motor (13) pulls the clamping plate (3) upward through the steel wire rope (14), so that the clamping plate (3) pulls the blown film tubes upward through the clamping plates (33); S4: When the clamping plate (33) pulls the film tube over the herringbone plate (2), the controller controls the driving device to drive the herringbone plate (2) to rotate in the opposite direction, so that the herringbone plate (2) drives the two air film rollers (21) to approach each other, so that the air film rollers (21) contact each other and clamp the film tube flat, and the transmission motor (13) pulls the clamping plate (3) to drive the clamped film tube to rise to the traction device, and the staff removes the film tube on the clamping plate (33) and cuts the wrinkled part of the film tube, and the cut film tube is placed on the traction device; S5: The traction device tractions the film tube, so that friction is generated between the film tube and the roller (212), so that the film tube drives the roller (212) to rotate through the friction force. Since threads are provided at both ends of the roller (212), when the roller (212) flattens the film tube, the wrinkled parts on the flat film tube are stretched by the threads at both ends of the roller (212) and become flat. S6: The staff places the flat film tube pulled by the pulling device on the winding device, so that the winding device can wind up the film tube.

2. A plastic film blow molding process, characterized in that: The steps of the process are as follows: S1: The staff first controls the driving device through the controller to drive the herringbone plates (2) to flip to a mutually parallel state, and then controls the transmission motor (13) to release the clamping plate (3), so that the clamping plate (3) passes between the mutually parallel herringbone plates (2) and falls to the upper end of the machine head (11). As the transmission motor (13) continuously releases the steel wire rope (14), the clamping plate (3) squeezes the bracket (36) under the action of its own gravity, pushing the viscous cylinder (37) to roll in the opposite direction along the upper end surface of the machine head (11), until the viscous cylinder (37) passes over the blow molding port, at which time the controller controls the transmission motor (13) to stop; S2: The staff starts the extruder and pours the raw materials required for film blowing into the extruder, so that the extruder melts the film raw materials and squeezes them into the die head (11), so that the die head (11) blows the film raw materials into a film tube, and the cooling air ring (12) blows the film tube out of the blowing port of the die head (11). The staff spreads the blown film tube on the upper end surface of the die head (11) through a tool, and the controller controls the transmission motor (13) to rotate in the opposite direction, so that the transmission motor (13) pulls the steel wire rope (14) to drive the clamping plate (3) to rise. At this time, the brackets (36) approach each other under the torsion force of the torsion spring, and the brackets (36) drive the viscous tube (37) to roll along the upper end surface of the die head (11) and approach each other; S3: When the viscous cylinders (37) roll along the upper end surface of the machine head (11) and approach each other, the two viscous cylinders (37) contact the film cylinders close to them, so that the film cylinders adhere to the surface of the viscous cylinders (37); and the film cylinders roll with the viscous cylinders (37) and are wound around the viscous cylinders (37). When the two viscous cylinders (37) are in contact and adhere to each other, the staff controls the transmission motor (13) to rotate through the controller, so that the transmission motor (13) pulls the clamping plate (3) upward through the steel wire rope (14), so that the clamping plate (3) pulls the blown film cylinders upward through the viscous cylinders (37); S4: When the adhesive tube (37) pulls the film tube over the herringbone plate (2), the controller controls the driving device to drive the herringbone plate (2) to rotate in the opposite direction, so that the herringbone plate (2) drives the two air film rollers (21) to approach each other, so that the air film rollers (21) contact each other and clamp the film tube flat, and the transmission motor (13) pulls the clamping plate (3) to drive the clamped film tube to rise to the traction device, and the staff removes the film tube from the adhesive tube (37) and cuts the wrinkled part of the film tube, and the cut film tube is placed on the traction device; S5: The traction device tractions the film tube, so that friction is generated between the film tube and the roller (212), so that the film tube drives the roller (212) to rotate through the friction force. Since threads are provided at both ends of the roller (212), when the roller (212) flattens the film tube, the wrinkled parts on the flat film tube are stretched by the threads at both ends of the roller (212) and become flat. S6: The staff places the flat film tube pulled by the pulling device on the winding device, so that the winding device can wind up the film tube.

3. A plastic film blow molding machine, which is suitable for the plastic film blow molding process of claim 1 or 2, comprising: A frame (1), wherein a machine head (11) is provided below the frame (1); a feed port (111) is provided on the surface of the machine head (11); the machine head (11) is used to blow a film raw material into a film tube; the machine head (11) is fixedly connected to the frame (1); a cooling air ring (12) is installed at the upper end of the machine head (11); a traction device is installed at the upper end of the frame (1); the traction device is used to pull the film tube blown by the machine head (11); a herringbone plate (2) is installed between the machine head (11) and the traction device; the herringbone plate (2) is installed on the frame (1) through a driving device; the driving device is used to drive the herringbone plate (2) to flip and move left and right, characterized in that: A feeding mechanism, the feeding mechanism being mounted on the upper end of the frame (1); the feeding mechanism being used to pull the film tube extruded by the die head (11) to the pulling device; A protection module, the protection module being mounted on a side of the herringbone plate (2) that is close to each other; the protection module is used to reduce friction between the film cylinder and the herringbone plate (2); A controller is used to control the automatic operation of the entire plastic film blow molding machine.

4. A plastic film blow molding machine according to claim 3, characterized in that: The feeding mechanism comprises: A clamping plate (3); a transmission motor (13) is installed on the upper end of the frame (1); a steel wire rope (14) is fixedly connected to the output end of the transmission motor (13); an end of the steel wire rope (14) away from the transmission motor (13) is fixedly connected to the clamping plate (3); a through groove (31) is formed on the upper end of the clamping plate (3); a U-shaped plate (32) is installed in the through groove (31); Clamping modules, the clamping modules are distributed on both sides of the U-shaped plate (32); the clamping modules are installed on the inner wall of the through groove (31); the clamping modules are used to clamp the blown film tube; An adsorption module is installed at the lower end of the clamping plate (3); the adsorption module is used to adsorb the clamping plate (3) onto the machine head (11).

5. A plastic film blow molding machine according to claim 4, characterized in that: The clamping module comprises clamping plates (33); there are two groups of clamping plates (33) with two plates in each group; each group of clamping plates (33) is rotatably connected to the inner wall of the through slot (31) via a torsion spring; mutually attracting magnetic strips (34) are installed on the sides of two adjacent clamping plates (33) that are away from each other; and electromagnets (35) are fixedly connected to both sides of the lower end surface of the clamping plate (3).

6. A plastic film blow molding machine according to claim 4, characterized in that: The clamping module comprises a bracket (36) and a viscous tube (37); the viscous tube (37) is made of TRP material, and there are two groups of brackets (36) with two in each group; two adjacent brackets (36) are rotatably connected in the through groove (31) via a torsion spring; the viscous tube (37) is rotatably connected to one end of the bracket (36) away from the torsion spring.

7. A plastic film blow molding machine according to claim 5 or 6, characterized in that: The adsorption module comprises a rubber suction cup (4) and a fixing rod (41); one end of the fixing rod (41) is fixedly connected to the clamping plate (3), and the other end is provided with a mounting groove (42); a telescopic rod (43) is slidably connected in the mounting groove (42); the telescopic rod (43) is fixedly connected to the bottom of the mounting groove (42) via a spring (44); and one end of the telescopic rod (43) away from the fixing rod (41) is fixedly connected to the rubber suction cup (4).

8. A plastic film blow molding machine according to claim 7, characterized in that: The telescopic rod (43) is slidably sealed and connected in the mounting groove (42); an air passage (45) is provided in the telescopic rod (43); one end of the air passage (45) is communicated with the mounting groove (42), and the other end thereof passes through the rubber suction cup (4) and is communicated with the outside; an electromagnetic suction cup (46) is fixedly connected to the groove bottom of the mounting groove (42); an iron sheet (47) is fixedly connected to one end of the telescopic rod (43) close to the mounting groove (42).

9. A plastic film blow molding machine according to claim 3, characterized in that: The protection module comprises an air film roller (21); a groove (22) is provided on one side of the herringbone plate (2) close to each other; the air film roller (21) is rotatably connected in the groove (22); the air film roller (21) comprises a roller (211) and a roller (212) made of PTFE film material; and the roller (212) is fixedly connected to the surface of the roller (211).

10. A plastic film blow molding machine according to claim 9, characterized in that: The surface of the roller (212) is provided with a thread groove (23); the spiral directions of the thread grooves (23) at two ends of the roller (212) are arranged in opposite directions.

Images