A film blowing machine

Abstract

The invention relates to the technical field of film blowing machine equipment, and more specifically to a film blowing machine; the machine comprises a base frame, a feed frame, a circular ring A, a circular ring B, a lower template A, an upper template A, a lower template B, an upper template B, a circular frame A, a slide A, a slide groove A and a slider A; four feed frames are fixedly connected to the base frame, the lower ends of the four feed frames are fixedly connected to the circular ring A, the upper ends of the four feed frames are fixedly connected to the circular ring B, the lower template A and the upper template A are slidably connected in the circular ring A, the lower template B and the upper template B are slidably connected in the circular ring B, the lower ends of the four feed frames are fixedly connected to the slide A, the four slides A are provided with slide grooves A, the lower end of the lower template A is fixedly connected to the circular frame A, four slides A are fixedly connected to the circular frame A, and the four slides A are respectively slidably connected in the four slide grooves A; and two films of different specifications can be processed simultaneously using one blower.

Description

Technical Field

[0001] The invention relates to the technical field of film blowing machine equipment, and more specifically to a film blowing machine. Background Art

[0002] The film blowing machine heats and melts plastic particles and then blows them into thin films. The films produced by the film blowing machine are suitable for various high-end film packaging. This kind of film can be widely used for light and heavy packaging due to its good barrier properties, freshness preservation, moisture resistance, frost resistance, oxygen isolation, and oil resistance. Such as various fresh fruits, meat products, pickles, fresh milk, liquid beverages, medical supplies, etc. If the existing film blowing machine wants to process two films with different diameters, it is necessary to stop the equipment first and then replace different die heads. It is impossible for one device to process two specifications of film at the same time, which increases both the cost and the processing time.

[0003] The current blow molding machines lack a type that can use one blower to simultaneously process two films of different specifications, which can save costs and reduce processing time. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a film blowing machine which can use one blower to simultaneously process two films of different specifications.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] It includes a base frame, a feed rack, a ring A, a ring B, a lower template A, an upper template A, a lower template B and an upper template B. Four feed racks are fixedly connected to the base frame, the lower ends of the four feed racks are fixedly connected to the ring A, the upper ends of the four feed racks are fixedly connected to the ring B, the lower template A and the upper template A are slidably connected in the ring A, and the lower template B and the upper template B are slidably connected in the ring B.

[0007] It also includes a round frame A, a slide A, a slide groove A, a slider A, a bracket, a slide groove B, a slider B, a slide B, a round frame B, a slide groove E and a slider E. The lower ends of the four feed racks are fixedly connected with the slide A, and the four slides A are each provided with a slide groove A. The lower end of the lower template A is fixedly connected with the round frame A, and four sliders A are fixedly connected to the round frame A, and the four sliders A are respectively slidably connected to the four slide grooves A. The two feed racks are fixedly connected with the bracket, and the two brackets are each provided with a slide groove B. Two sliders B are fixedly connected to the upper template A, and the lower end of the lower template B is fixedly connected with two sliders B, and two sliders B are slidably connected in each slide groove B. The upper ends of the four feed racks are fixedly connected with the slide B, and the four slides B are each provided with a slide groove E. The upper end of the upper template B is fixedly connected with the round frame B, and four sliders E are fixedly connected to the round frame B, and the four sliders E are respectively slidably connected in the four slide grooves E. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0009] Figure 1 It is a structural schematic diagram of a film blowing machine in the present invention;

[0010] Figure 2 It is a schematic diagram of the structure of the feed rack and the base frame in the present invention;

[0011] Figure 3 It is a schematic diagram of the structure of the ring B and the carriage B in the present invention;

[0012] Figure 4 It is a schematic diagram of the structure of the ring A and the carriage A in the present invention;

[0013] Figure 5 Schematic diagram of the structure of the ring A and the ring B in the present invention;

[0014] Figure 6 It is a schematic diagram of the structure of the roller and the drum A in the present invention;

[0015] Figure 7 It is a structural schematic diagram of the roller B in the present invention;

[0016] Figure 8 It is a structural schematic diagram of the circular frame A and the lower template A in the present invention;

[0017] Fig. 9 It is a structural schematic diagram of the circular frame B and the upper template B in the present invention;

[0018] Fig.10 It is a structural schematic diagram of the lower template B and the round cover B in the present invention;

[0019] Fig.11 It is a structural schematic diagram of the upper template B in the present invention;

[0020] Fig.12 This is a schematic diagram of the structure of the round cover B in the present invention:

[0021] Fig.13 This is a schematic diagram of the structure of the upper template A and the round cover A in the present invention:

[0022] Fig.14 This is a schematic diagram of the structure of the round cover A in the present invention:

[0023] Fig.15 This is a schematic diagram of the structure of the feed rack and the filter box in the present invention:

[0024] Fig.16 It is a schematic diagram of the structure of the filter box in the present invention. DETAILED DESCRIPTION

[0025] refer to Figures 1 to 5 According to the figure, the process of processing two films with different diameters can be obtained:

[0026] The present invention comprises a base frame 1, a feed frame 2, a circular ring A3, a circular ring B4, an upper template A9, an upper template A10, a lower template B14 and an upper template B15. Four feed frames 2 are fixedly connected to the base frame 1. The lower ends of the four feed frames 2 are fixedly connected to the circular ring A3. The upper ends of the four feed frames 2 are fixedly connected to the circular ring B4. The lower template A9 and the upper template A10 are slidably connected in the circular ring A3. The lower template B14 and the upper template B15 are slidably connected in the circular ring B4. The four feed frames 2 are fixedly connected to the base frame 1. The four rectangular holes opened on the sides of the four feed frames 2 are used to fill the hot-melted plastic particles. The hot-melted plastic particles will become a gelatinous substance. The four feed frames 2 are provided with upper and lower outlets. The four upper outlets extend into the circular ring B4. 4, four lower outlets extend into the circular ring A3, and the circular ring A3 is slidably connected with the lower template A9 and the upper template A10, and a lower cavity is formed between the circular ring A3, the lower template A9 and the upper template A10, and the hot-melt plastic particles enter the lower cavity through the four feeding racks 2. A circular hole is opened at the lower end of the bottom frame 1, and the blower blows strong wind upward from the circular hole. As the hot-melt plastic particles enter the lower cavity, a gap is left between the lower template A9 and the upper template A10, and the hot-melt plastic particles are squeezed out of the gap by the hot-melt plastic particles that gradually enter the lower cavity. After the hot-melt plastic particles are squeezed out of the gap, they will be blown upward by the strong wind, and in the process of the hot-melt plastic particles being blown upward, new hot-melt plastic particles will be generated. The hot-melt plastic particles are squeezed out from the gap one after another, and the hot-melt plastic particles are cooled in the process of being blown upward by strong wind. As the strong wind continues to blow upward, the hot-melt plastic particles will form a thin film cylinder and move upward. The upper end outlets of the four feed racks 2 extend into the ring B4, and an upper cavity will be formed between the ring B4, the lower template B14 and the upper template B15. The hot-melt plastic particles enter the upper cavity from the upper ends of the four feed racks 2, and a gap will be formed between the lower template B14 and the upper template B15. The hot-melt plastic particles that enter the upper cavity one after another are squeezed out of the gap, and the extruded hot-melt plastic particles will be blown upward by the blower, and new hot-melt plastic particles will continue to be blown upward by strong wind, and the hot-melt plastic particles will be blown into a cylindrical thin film. , the lower template B14 and the upper template B15 have the same diameter, the lower template A9 and the upper template A10 have the same diameter, the diameter of the lower template B14 and the upper template B15 is larger than the diameter of the lower template A9 and the upper template A10, so that the diameter of the cylindrical film formed between the lower template B14 and the upper template B15 is larger than the diameter of the cylindrical film formed between the lower template A9 and the upper template A10, and the cylindrical film formed between the lower template A9 and the upper template A10 will be covered by the cylindrical film formed between the lower template B14 and the upper template B15. Since a strong wind from a blower is used to blow upward at the same time, the large film will cover the small and medium films and move upward at the same time. In the process of strong wind blowing upward, there will be strong wind between the large and small films, and the large and small films will not interfere with each other.This results in the effect of processing two films with different diameters.

[0027] refer to Figures 1 to 14 According to the figure, the process of processing two films with different thicknesses can be obtained:

[0028] The present invention also includes a round frame A5, a slide A6, a slide groove A7, a slider A8, a bracket 11, a slide groove B12, a slider B13, a slide B16, a round frame B17, a slide groove E33 and a slider E34. The lower ends of the four feed racks 2 are fixedly connected with the slide A6, and each slide A6 is provided with a slide groove A7. The lower end of the lower template A9 is fixedly connected with the round frame A5, and the round frame A5 is fixedly connected with four sliders A8. The four sliders A8 are respectively slidably connected to the four slide grooves A7. The two feed racks 2 are fixedly connected with the bracket 11, and each bracket 11 is provided with a slide groove B12. The upper template A10 is fixedly connected with two sliders B13, and the lower end of the lower template B14 is fixedly connected with two sliders B13. Two sliders B13 are slidably connected in each slide groove B12, slides B16 are fixedly connected to the upper ends of the four feed racks 2, slide grooves E33 are provided on the four slides B16, a round frame B17 is fixedly connected to the upper end of the upper template B15, four sliders E34 are fixedly connected to the round frame B17, the four sliders E34 are slidably connected in the four slide grooves E33 respectively, and the four sliders A8 can be driven to slide up and down in the four slide grooves A7 by moving the round frame A5 up and down. The round frame A5 is fixedly connected to the bottom of the lower template A9, and the lower template A9 is driven to slide up and down in the ring A3 by moving the round frame A5 up and down. The upper template A10 is driven to slide in the ring A3 by sliding the two sliders B13 up and down in the two slide grooves B12. Slide up and down, and change the gap formed between the upper template A10 and the lower template A9 by changing the distance between them. In this process, the discharge port at the lower end of the feed frame 2 should always be located in the lower cavity. The larger the gap formed between the upper template A10 and the lower template A9, the more hot-melt plastic particles will be extruded, and the more hot-melt plastic particles will be extruded, the thicker the film cylinder will be formed. The smaller the gap formed between the upper template A10 and the lower template A9 becomes, the fewer hot-melt plastic particles will be extruded, and the fewer hot-melt plastic particles will be extruded, the thinner the film cylinder will be formed. The round frame B17 is fixedly connected to the upper end of the upper template B15, and slides up and down in the four slide grooves E33. Four sliders E34 drive the upper template B15 to slide up and down in the ring B4. The two sliders B13 drive the lower template B14 to slide up and down in the two slide grooves B12. The gap formed between the upper template B15 and the lower template B14 is changed by changing the distance between the upper template B15 and the lower template B14. When the gap is larger, the thicker the cylindrical film extruded between the upper template B15 and the lower template B14 is. When the gap is smaller, the thinner the cylindrical film extruded between the upper template B15 and the lower template B14 is. The thicknesses of the two films will not affect each other. One can process a thin film and the other can process a thick film, so as to obtain the effect of processing two films with different thicknesses.

[0029] refer to Figure 1 and Figure 7 According to the figure, the process of rolling up the lower template B14 and the upper template B15 to process the film can be obtained:

[0030] The present invention further comprises a roller B27, a lower plate 28 and an upper plate 29. The lower plates 28 are fixedly connected to the two slides B16. The two upper plates 29 are connected to the two lower plates 28 by four bolts. A circular hole is formed between each upper plate 29 and each lower plate 28. The roller B27 is rotatably connected in the two circular holes. The film extruded between the lower template B14 and the upper template B15 is a film with a larger diameter. The cylindrical film is flattened at the top to become a rectangular thin film with the inner walls in contact. Then, the rectangular thin film is adhered to the roller B27 with tape, and then the roller B27 is rotated to make the thin film wrapped around the roller B27. On the outer surface of the cylinder B27, when enough thin film is wound on the outer surface of the cylinder B27, the staff will remove the four bolts between the two upper plates 29 and the two lower plates 28, and then remove the two upper plates 29, and then take down the cylinder B27 rolled with thin film from the two lower plates 28, and put the cylinder B27 without thin film rolled on the two lower plates 28, and then cover the two lower plates 28 with two upper plates 29, and tighten the nuts after passing the four bolts through the round holes of the two lower plates 28 and the two upper plates 29, so as to obtain the effect of rolling up the lower template B14 and the upper template B15 to process the film.

[0031] refer to Figure 1 and Figure 7 According to the figure, the process of automatically rolling up the lower template B14 and the upper template B15 to process the film can be obtained:

[0032] The present invention also includes a motor 30 and a round wheel 31. The right end of an upper plate 29 is fixedly connected to the motor 30. The output shaft of the motor 30 is fixedly connected to the round wheel 31. The round wheel 31 is connected to the right end of the roller B27 through a key. When the film processed by the lower template B14 and the upper template B15 is to be rolled up, the motor 30 is started to rotate. The motor 30 drives the round wheel 31 fixedly connected to the output shaft to rotate. The right end of the roller B27 is connected to the round wheel 31 through a key. The round wheel 31 rotates to drive Roller B27 rotates, and the thin film standing on the outer surface of roller B27 is rolled up on the outer surface of roller B27. When the outer surface of roller B27 is full of thin film, the motor 30 stops rotating, and then roller B27 also stops rotating. The roller B27 full of thin film is taken down from the two lower plates 28. Before taking it down, pull roller B27 off the round wheel 31, so as to obtain the effect of automatically rolling up the lower template B14 and the upper template B15 to process the film.

[0033] refer to Figures 1 to 6 According to the figure, the process of rolling up the film between the lower template A9 and the upper template A10 can be obtained:

[0034] The present invention also includes a bracket 20, a slide groove C21 and a roller A22. The upper ends of the two brackets 11 are provided with a slide groove C21. The left and right ends of the roller A22 are respectively slidably connected in the two slide grooves C21. The outer sides of the two brackets 11 are respectively slidably connected with two brackets 20. The two brackets 20 are respectively in contact with the left and right ends of the roller A22. Springs are fixedly connected between the two brackets 20 and the two brackets 11. The film processed between the lower template A9 and the upper template A10 will form a cylindrical shape, and then the inner walls of the cylindrical film will contact each other to become a thin film. When the thin film is The thin film is adhered to the roller A22, and then the roller A22 is rotated to make the film processed between the lower template A9 and the upper template A10 rolled on the outer surface of the roller A22. As the thin film on the outer surface of the roller A22 is rolled more and more, the weight of the film rolled on the roller A22 is getting heavier and heavier, and the roller A22 will slide downward in the two slide grooves C21. When the roller A22 is full of thin film, the lower template B14 is first contacted with the upper template B15, so that there is no gap between the lower template B14 and the upper template B15, and the gap between the lower template B14 and the upper template B15 is No cylindrical film will be produced, so that the film produced by the lower template A9 and the upper template A10 will not be covered with film. Then the staff will slide the two brackets 20 downward on the two supports 11. The bottoms of the two slide grooves C21 are both provided with notches. Then the roller A22 will follow the two brackets 20 to move downward on the two slide grooves C21. When the two brackets 20 slide under the two notches, the roller A22 will slide out of the openings of the two slide grooves C21. The staff will take out the roller A22 full of thin film from the two openings, and then put the empty roller A2 2 Put it into the two chutes C21 from the two notches, and then the staff will loosen the two brackets 20, and the two brackets 20 will be pushed to the top of the two chutes C21. Then, a new film is processed between the lower template A9 and the upper template A10 and glued to the roller A22 with tape, so that a gap is generated between the lower template B14 and the upper template B15. Then, the lower template B14 and the upper template B15 can process a cylindrical film. Repeat the above steps to get the effect of rolling up the film between the lower template A9 and the upper template A10.

[0035] refer to Figures 1 to 7 According to the figure, the process of rolling two films at the same time can be obtained:

[0036] The present invention also includes a roller frame 23, a roller 24, a rolling ring 25 and a slide groove D26. Two roller frames 23 are fixedly connected to the two brackets 11. The two roller frames 23 are each provided with a slide groove D26. The two slide grooves D26 are both slidably connected with rollers 24. The two rolling rings 25 are respectively slidably connected to the outer sides of the two roller frames 23. The two rolling rings 25 are both rotatably connected with rollers 24. Springs are fixedly connected between the two rolling rings 25 and the two roller frames 23. The roller A22 and the roller B27 are both frictionally transmitted with the roller 24. The roller 24 contacts the outer surface of the roller A22 and the outer surface of the roller B27. When the roller B27 is driven by the motor 30 to rotate, the film with a large diameter will be rolled on the outer surface of the roller B27, and the roller 24 will contact the large film on the outer surface of the roller B27. The rotation of the roller B27 will drive the large film to rotate around the roller B27. The large film rotates around the roller B27. The movement will drive roller 24 to rotate on the large film on the outer surface of roller B27. The rotation of roller 24 will drive the friction-rotating roller A22 to rotate. The rotation of roller A22 will allow the film with a smaller diameter to be rolled up on the outer surface of roller A22. Then roller 24 will rotate between the outer surfaces of the large film and the small film. The springs fixedly connected between the two rolling rings 25 and the two rolling frames 23 can make roller 24 closely contact the outer surfaces of the large and small films. As more and more thin films are rolled onto roller B27 and roller A22, roller B27 cannot move up and down. The thin films on roller B27 will push roller 24 to move downward in the two slide grooves D26, and roller 24 will push roller A22 to slide downward in the two slide grooves C21. In this way, roller B27 can always rotate and drive roller A22 to rotate through roller 24, so as to achieve the effect of rolling two films at the same time.

[0037] refer to Figures 1 to 14 According to the figure, the process of processing a cylindrical film within a certain diameter range can be obtained:

[0038] The present invention also includes a round cover A18 and a round cover B19. The lower template A9 and the upper template A10 are both provided with threads. The two round covers A18 are respectively connected to the lower template A9 and the upper template A10 through threads. The lower template B14 and the upper template B15 are both provided with threads. The two round covers B19 are respectively connected to the lower template B14 and the upper template B15 through threads. Small round holes are opened in the two round covers A18, and large round holes are opened in the two round covers B19. The hot-melted plastic particles squeezed out from between the lower template A9 and the upper template A10 will be located between the two round covers A18. The smaller the diameter of the small circular holes opened on the two round covers A18, the smaller the diameter of the cylindrical film processed by the lower template A9 and the upper template A10, and vice versa. However, the diameter of the small circular holes opened on the two round covers A18 cannot be larger than the diameter of the lower template A9 and the upper template A10. The larger the large circular holes opened on the two round covers B19, the larger the diameter of the cylindrical film processed between the lower template B14 and the upper template B15. However, the diameter of the large circular holes opened on the two round covers B19 cannot exceed the diameter of the lower template B14 and the upper template B15, and cannot be smaller than the diameter of the ring A3.

[0039] When the lower template A9 and the upper template A10 are to be used to process cylindrical films of different diameters, first, the lower template A9 is slid downward in the four slide grooves A7 through the four sliders A8 to slide the lower template A9 out from under the ring A3. Then, the staff loosens the thread to remove the original round cover A18, and screws the round cover A18 with different diameters of small circular holes on the lower template A9 through threads. Then, the lower template A9 is slid into the ring A3, and the upper template A10 is slid upward in the two slide grooves B12 through the two sliders B13, which will drive the upper template A10 to slide out of the ring A3 from above. The staff loosens the thread to remove the original round cover A18, and then tightens the round cover A18 with the same diameter of small circular holes as those on the lower template A9 on the upper template A10 through threads. When the lower template B14 and the upper template B15 are to be used to process cylindrical films of different diameters, the upper template B15 is screwed in the four slide grooves E33 through the four sliders E34. The upper template B15 slides upward to drive the upper template B15 to slide out of the ring B4 from above the ring B4, then the staff loosens and removes the round cover B19 connected by a thread on the upper template B15, replaces the large round hole round cover B19 with different diameters and tightens it onto the upper template B15, then slides the upper template B15 into the ring B4 through four sliders E34, and then slides the lower template B14 downward in the two slide grooves B12 through two sliders B13, and the two sliders B13 drive the lower template B14 to slide out of the ring B4 from below the ring B4, then the staff loosens and removes the round cover B19 connected by a thread on the lower template B14, replaces the large round hole round cover B19 with the same diameter as the upper template B15 and tightens it onto the lower template B14, and then slides the lower template B14 from above the ring B4 into the ring B4 through two sliders B13, so as to obtain the effect of processing a cylindrical film within a certain diameter range.

[0040] refer to Figures 1 to 16 According to the figure, the process of preventing the processing of damaged plastic film can be obtained:

[0041] The present invention also includes four filter boxes 32. Rectangular through holes are provided on the four feed racks 2. A filter box 32 is slidably connected in each rectangular through hole. A filter screen is provided at the rear end of each filter box 32. Sometimes the plastic particles are not completely melted, or the melted plastic particles are attached with impurities, so that the heat-melted plastic particles become particles. Such plastic particles will cause discontinuity of the heat-melted plastic particles during the process of extruding the upper cavity and the cavity, resulting in damage to the processed cylindrical film. Four filter boxes 32 are slidably connected in the four feed racks 2 respectively. The filter screens at the bottom of the four filter boxes 32 can prevent the un-heat-melted plastic particles from entering the upper and lower cavities. The un-heat-melted plastic particles will be blocked in the four filter boxes 32. When it is found that the speed of the hot-melt plastic particles extruding the upper and lower cavities slows down, the four filter boxes 32 can be drawn out from the four feed racks 2 in turn, and the impurities in the filter boxes 32 can be cleaned out of the filter boxes 32 with a brush, so as to prevent the processing of damaged plastic films.

[0042] refer to Figures 1 to 16 According to the figure, the process of four filter boxes 32 being accurately located in four feed racks 2 can be obtained:

[0043] The present invention also includes plates 35 and plug plates 36. Two plates 35 are provided at the left end of each feed rack 2, and one plate 35 is provided at the left end of each filter box 32. The plug plates 36 are slidably connected in the three plates 35. When the filter box 32 is to be cleaned, the plug plates 36 are first pulled out from above the three plates 35, and then the filter box 32 is cleaned. After the filter box 32 is cleaned, the filter box 32 is slid into the feed rack 2, and then the three plates 35 are located on a horizontal line, and the plug plates 36 are slid from above the three plates 35 into the three plates 35, so as to obtain the effect that the four filter boxes 32 are accurately located in the four feed racks 2.

[0044] refer to Figures 1 to 16 According to the figure, the process of preventing the same film from having different thicknesses can be obtained:

[0045] The four slides A6, the two brackets 11 and the four slides B16 described in the present invention are all provided with a plurality of circular holes, and the slider A8, the slider B13 and the slider E34 are all provided with four circular holes. By inserting pins into the four circular holes of the slider A8, the slider B13 and the slider E34, the pins pass through the four circular holes and are inserted into the four circular holes of the four slides A6, the two brackets 11 and the four slides B16 on the sliders A8, the slider B13 and the slider E34, so that the sliders A8, the slider B13 and the slider E34 are kept stationary relative to the four slides A6, the two brackets 11 and the four slides B16, so as to prevent the lower template A9 and the upper template A10 from sliding arbitrarily in the circular ring A3 and causing the same film to be processed with different thicknesses, and also prevent the lower template B14 and the upper template B15 from sliding arbitrarily in the circular ring B4, so as to obtain the effect of preventing the same film from being processed with different thicknesses.

Claims

1. A film blowing machine, characterized in that: The invention comprises a base frame (1), a feed frame (2), a circular ring A (3), a circular ring B (4), a lower template A (9), an upper template A (10), a lower template B (14) and an upper template B (15); four feed frames (2) are fixedly connected to the base frame (1); the lower ends of the four feed frames (2) are fixedly connected to the circular ring A (3); the upper ends of the four feed frames (2) are fixedly connected to the circular ring B (4); the lower template A (9) and the upper template A (10) are slidably connected in the circular ring A (3); the lower template B (14) and the upper template B (15) are slidably connected in the circular ring B (4).

2. A film blowing machine according to claim 1, characterized in that: The invention also comprises a round frame A (5), a slide frame A (6), a slide groove A (7), a slider A (8), a bracket (11), a slide groove B (12), a slider B (13), a slide frame B (16), a round frame B (17), a slide groove E (33) and a slider E (34); the lower ends of the four feeding frames (2) are fixedly connected with the slide frames A (6); the four slide frames A (6) are provided with slide grooves A (7); the lower end of the lower template A (9) is fixedly connected with the round frame A (5); the round frame A (5) is fixedly connected with four sliders A (8); the four sliders A (8) are respectively slidably connected in the four slide grooves A (7); two of the feeding frames (2) are fixedly connected with the bracket (1 1), two brackets (11) are provided with a slide groove B (12), the upper template A (10) is fixedly connected with two sliders B (13), the lower end of the lower template B (14) is fixedly connected with two sliders B (13), each slide groove B (12) is slidably connected with two sliders B (13), the upper ends of the four feeding racks (2) are fixedly connected with a slide rack B (16), the four slide racks B (16) are provided with a slide groove E (33), the upper end of the upper template B (15) is fixedly connected with a round frame B (17), the round frame B (17) is fixedly connected with four sliders E (34), and the four sliders E (34) are slidably connected in the four slide grooves E (33) respectively.

3. A film blowing machine according to claim 2, characterized in that: The invention also comprises a roller B (27), a lower plate (28) and an upper plate (29), wherein the lower plates (28) are fixedly connected to the two slides B (16), the two upper plates (29) are connected to the two lower plates (28) by four bolts respectively, a circular hole is formed between each upper plate (29) and each lower plate (28), and the roller B (27) is rotatably connected in the two circular holes.

4. A film blowing machine according to claim 3, characterized in that: It also comprises a motor (30) and a round wheel (31), wherein the right end of one of the lower plates (28) is fixedly connected to the motor (30), the output shaft of the motor (30) is fixedly connected to the round wheel (31), and the round wheel (31) is connected to the right end of the roller B (27) via a key.

5. A film blowing machine according to claim 4, characterized in that: The invention also comprises a bracket (20), a slide groove C (21) and a roller A (22), wherein the two brackets (11) are provided with a slide groove C (21), the left and right ends of the roller A (22) are respectively slidably connected in the two slide grooves C (21), the outer sides of the two brackets (11) are respectively slidably connected with the brackets (20), the two brackets (20) are respectively in contact with the left and right ends of the roller A (22), and springs are fixedly connected between the two brackets (20) and the two brackets (11).

6. A film blowing machine according to claim 5, characterized in that: The invention also comprises a roller frame (23), a roller (24), a rolling ring (25) and a slide groove D (26); the upper ends of the two brackets (11) are fixedly connected with the roller frame (23); the two roller frames (23) are provided with a slide groove D (26); the two slide grooves D (26) are slidably connected with the rollers (24); the outer sides of the two roller frames (23) are slidably connected with the rolling ring (25); the two rolling rings (25) are rotatably connected with the rollers (24); springs are fixedly connected between the two rolling rings (25) and the two roller frames (23); and the roller A (22) and the roller B (27) are frictionally driven with the rollers (24).

7. The film blowing machine according to claim 1, characterized in that: The invention also includes a round cover A (18) and a round cover B (19). The lower template A (9) and the upper template A (10) are both provided with threads. The two round covers A (18) are respectively connected to the lower template A (9) and the upper template A (10) through threads. The lower template B (14) and the upper template B (15) are both provided with threads. The two round covers B (19) are respectively connected to the lower template B (14) and the upper template B (15) through threads.

8. The film blowing machine according to claim 1, characterized in that: It also includes four filter boxes (32), the four feed racks (2) are each provided with a rectangular through hole, a filter box (32) is slidably connected in each rectangular through hole, and a filter net is provided at the rear end of each filter box (32).

9. A film blowing machine according to claim 8, characterized in that: It also includes plates (35) and insert plates (36), each feed rack (2) is provided with two plates (35), each filter box (32) is provided with one plate (35), and the insert plate (36) is slidably connected inside the three plates (35).

10. The film blowing machine according to claim 2, characterized in that: The four slides A (6), the two brackets (11) and the four slides B (16) are all provided with a plurality of circular holes.

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