Plastic film blowing machine

Abstract

The invention relates to the technical field of film blowing machines, and discloses a plastic film blowing machine which comprises a machine frame, a film blowing head is arranged at the bottom of the machine frame, a front guide roller and a film lifting roller are arranged at the top of the machine frame, a film lifting mechanism is arranged on the side wall of the machine frame, and a mounting frame is arranged on the front side of the machine frame. A main guide roller is rotationally connected to the middle of the mounting frame, a rolling processing mechanism is arranged on the front side of the mounting frame, through the arranged film lifting roller, when the film blowing machine is started, a film belt can be automatically pulled upwards, film bubbles are synchronously pulled upwards and intermittently lifted for a short time, the situation that the film belt and the film bubbles are broken due to too large tension can be prevented, and the service life of the film blowing machine is prolonged. The film blowing device is simple in structure and convenient to use, the smoothness of film blowing operation can be improved conveniently, the section of a film can be neat through the arranged electric heating wire, follow-up use of the film is facilitated, and the winding smoothness can be improved and the phenomenon of uneven winding can be prevented during winding through the arranged guide strip and the arranged film stirring rod.

Description

Technical Field

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

[0002] The plastic film blowing machine is a device that heats and melts plastic particles and then blows them into plastic film. The plastic particles are heated to gradually melt them into a viscous flow state, which is then extruded to the die head by the screw and extruded through the annular die at the die head to form a tubular film blank. After the blank is cooled and shaped, it is pulled to the winding device by the traction roller and the film is wound into a roll.

[0003] When the film blowing machine is turned on, the film bubble is not formed in the initial stage and the temperature is high. A traction belt is needed to pull and lift the film bubble. During operation, it is necessary to lift the film bubble upward on one side and pull the traction belt downward on the other side to lift the film bubble. The operation is very inconvenient, and the film bubble has a high temperature. Long-term contact can easily cause burns. Therefore, it needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a plastic film blowing machine to solve the problems raised in the above background technology. To achieve the above object, the present invention provides the following technical solution: comprising a frame, a film blowing head is arranged at the bottom of the frame, a front guide roller and a film lifting roller are arranged at the top of the frame, a film lifting mechanism is arranged on the side wall of the frame, a mounting frame is arranged at the front side of the frame, a main guide roller is rotatably connected to the middle part of the mounting frame, and a winding processing mechanism is arranged at the front side of the mounting frame;

[0005] The film lifting mechanism comprises a transmission motor, the end of the output shaft of the transmission motor is fixedly connected with a bevel gear 1, the bevel gear 1 is rotatably connected with the transmission motor, the top of the bevel gear 1 is meshed with a bevel gear 2, a swing arm is arranged on the back of the bevel gear 2, one end of the swing arm is rotatably connected with the frame, a clamp is fixedly connected with the back of the bevel gear 2, a through slot is penetrated through the swing arm, the clamp is slidably installed in the through slot, a cross bar is slidably installed on the top of the frame, one end of the cross bar is movably connected with the end of the swing arm, and the film lifting roller is sleeved and installed on the cross bar;

[0006] One end of the cross bar is fixedly connected to a pressure plate, and two turntables are symmetrically arranged on the side of the frame close to the pressure plate, and a crawler is sleeved and installed on the turntable, and a plurality of cross plates are equidistantly installed on the surface of the crawler, and a turntable is hinged on the plurality of cross plates, and an insertion opening is opened on the turntable, and the width of the insertion opening is greater than the width of the cross plate;

[0007] A pulley group is connected to the bottom of one of the turntables, and a film-collecting roller is installed on the end of the pulley group away from the turntable. The film-collecting roller is rotatably connected to the frame, and one end of the film-collecting roller is fixedly connected to a ratchet. The top of the ratchet is movably connected to a clamping rod, and the clamping rod is rotatably connected to the frame.

[0008] Preferably, the winding processing mechanism includes two sliders slidably connected to the mounting frame, a boss is fixedly connected to the outer wall of the slider, a screw motor is arranged below the boss, a lifting plate is threadedly connected to the screw motor, the lifting plate passes through both sides of the mounting frame, and wedge blocks are fixedly installed at both ends of the lifting plate.

[0009] Preferably, an electric push rod is provided on the front side of the mounting frame, and side rods are respectively provided at both ends of the electric push rod, and the side rods are slidably connected to the mounting frame, and a flat plate is provided in the middle of the two side rods, and the flat plate is rotatably connected to the mounting frame, and pull rods are respectively rotatably connected to the two ends of the flat plate, and one end of the pull rod away from the flat plate is rotatably connected to the side rod, and loose rods are respectively fixedly connected to the two ends of the two side rods, and the output end of the electric push rod is fixedly connected to one of the side rods.

[0010] Preferably, a heating wire is provided on the lifting plate, and the height of the heating wire is lower than the bottom end height of the main roller, so as to prevent the film from being touched during the film rolling process.

[0011] Preferably, an elastic telescopic rod is symmetrically arranged on one side of the lifting plate, and a film baffle plate is fixedly connected to the top of the elastic telescopic rod.

[0012] Preferably, an installation roller is provided above the baffle plate, and inner sleeves are slidably connected to both ends of the installation roller, a spring is sleeved and installed at the connection between the installation roller and the inner sleeve, an outer sleeve is fixedly installed on the inner wall of the slider, and the outer sleeve is movably sleeved with the inner sleeve.

[0013] Preferably, one end of the inner sleeve away from the outer sleeve is movably engaged with a loosening rod, and the loosening rod is used to disassemble and install the installation roller. A slip ring is slidably connected to the outer sleeve, and a spring 2 is sleeved and installed at the connection between the slip ring and the outer sleeve. A blocking rod is fixedly connected to the bottom of the two ends of the installation roller, and a film-moving rod is slidably connected to the slip ring, and the film-moving rod abuts against the blocking rod.

[0014] Preferably, a guide bar is fixedly connected to the outer sleeve, the upper portion of the guide bar is arranged in an inclined surface, and the width of the upper portion is greater than the width of the lower portion, and the film-moving rod is slidably connected to the guide bar.

[0015] Preferably, a mounting plate is provided on the top of the outer sleeve, and the bottom of the mounting plate is rotatably connected to an inclined plate, one end of the inclined plate is rotatably connected to a rotating block, the top of the rotating block is slidably connected to the mounting plate, and a spring three is sleeved and installed, the surface of the inclined plate abuts against the top of the slip ring, and the function of the inclined plate is to make the film-moving rod open outward when it approaches the film.

[0016] Preferably, the winding processing mechanism also includes a buckle strip and an electric push rod two which are respectively arranged on the inner and outer sides of the mounting frame. The buckle strip is made of a tough material and is used to buckle the film-moving rod to a low position. The electric push rod two abuts against the convex head to return the slider to its position.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, the film lifting roller is provided, and when the film blowing machine is turned on, the film strip can be automatically pulled upward, so that the film bubble is pulled upward synchronously, and the film strip and the film bubble are intermittently lifted for a short time, which can prevent the film strip and the film bubble from being broken due to excessive pulling force, and facilitates the smoothness of the film blowing operation;

[0019] 2. In the present invention, by means of the ratchet and the clamping rod, when the film lifting roller moves downward, the film winding roller is driven to automatically wind up the film tape, so that the film tape can be reused, which is convenient for saving the film tape;

[0020] 3. In the present invention, by means of the arranged electric heating wire, after the film on the mounting roller is wound up, the rising wedge block can push the convex head to the front side, so that the gap between the mounting roller and the main roller is enlarged, and then the energized electric heating wire contacts the film, so that the film is quickly disconnected, and the cross section of the film can be made neat, which is beneficial to the subsequent use of the film.

[0021] 4. In the present invention, by providing the guide strip and the film-pushing rod, when the film-pushing rod approaches the film, the film-pushing rod is moved outward according to the inclined plate to avoid the film. Then, when the mounting roller starts to rotate, the film-pushing rod rotates accordingly, so that the film is completely wrapped around the mounting roller, and the film is in flat contact with the mounting roller. When winding, the flatness of the winding can be improved to prevent the occurrence of uneven winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a side structural schematic diagram of the frame of the present invention;

[0024] Figure 3 It is a schematic diagram of the unfolded structure of the film lifting roller and the cross bar of the present invention;

[0025] Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged structure of the A area in the middle;

[0026] Figure 5 It is a structural schematic diagram of the film lifting mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the ratchet wheel, the clamping rod and the film-collecting roller of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the winding processing mechanism of the present invention;

[0029] Figure 8 It is a schematic diagram of the top view of the winding processing mechanism of the present invention;

[0030] Fig. 9 For the present invention Figure 7 Schematic diagram of the enlarged structure of the middle B area;

[0031] Fig.10 This is a schematic diagram of the structure of the installation roller and slider of the present invention;

[0032] Fig.11 It is a schematic structural diagram of the blocking rod and the film-moving rod of the present invention;

[0033] Fig.12 It is a schematic diagram of the partial structure of the winding processing mechanism of the present invention.

[0034] In the figure: 1, frame; 2, film blowing head; 3, front guide roller; 4, film lifting roller; 5, film lifting mechanism; 501, transmission motor; 502, bevel gear 1; 503, bevel gear 2; 504, swing arm; 505, clamping head; 506, through groove; 507, cross bar; 508, pressing plate; 509, turntable; 510, crawler belt; 511, cross plate; 512, turntable; 513, insertion port; 514, pulley group; 515, film winding roller; 516, ratchet; 517, clamping rod; 6, mounting frame; 7, main guide roller; 8, winding and processing mechanism; 801, slider; 802, convex head; 803, Screw motor; 804, lifting plate; 805, wedge block; 806, electric push rod one; 807, side rod; 808, flat plate; 809, pull rod; 810, loosening rod; 811, heating wire; 812, elastic telescopic rod; 813, film baffle plate; 814, mounting roller; 815, inner kit; 816, spring one; 817, outer kit; 818, slip ring; 819, spring two; 820, baffle rod; 821, film push rod; 822, guide strip; 823, mounting plate; 824, inclined plate; 825, rotating block; 826, spring three; 827, buckle strip; 828, electric push rod two. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 12 , comprising a frame 1, a film blowing head 2 is arranged at the bottom of the frame 1, a front guide roller 3 and a film lifting roller 4 are arranged at the top of the frame 1, a film lifting mechanism 5 is arranged on the side wall of the frame 1, a mounting frame 6 is arranged at the front side of the frame 1, a main guide roller 7 is rotatably connected to the middle part of the mounting frame 6, and a winding processing mechanism 8 is arranged at the front side of the mounting frame 6;

[0037] Embodiment 1:

[0038] See also Figures 1 to 6 , this embodiment provides a technical solution: the film lifting mechanism 5 includes a transmission motor 501, the end of the output shaft of the transmission motor 501 is fixedly connected with a bevel gear 1 502, the bevel gear 1 502 is rotatably connected to the transmission motor 501, the top of the bevel gear 1 502 is meshed with a bevel gear 2 503, a swing arm 504 is provided on the back of the bevel gear 2 503, one end of the swing arm 504 is rotatably connected to the frame 1, a clamp 505 is fixedly connected to the back of the bevel gear 2 503, a through slot 506 is penetrated through the swing arm 504, the clamp 505 is slidably installed in the through slot 506, a cross bar 507 is slidably installed on the top of the frame 1, one end of the cross bar 507 is movably connected to the end of the swing arm 504, and the film lifting roller 4 is sleeved and installed on the cross bar 507;

[0039] One end of the cross bar 507 is fixedly connected to a pressing plate 508. Two rotating discs 509 are symmetrically arranged on the side of the frame 1 near the pressing plate 508. A crawler track 510 is sleeved and installed on the rotating disc 509. Several cross plates 511 are equidistantly installed on the surface of the crawler track 510. A rotating plate 512 is hinged on each of the several cross plates 511. The rotating plate 512 is provided with an insertion opening 513. The width of the insertion opening 513 is greater than the width of the cross plate 511.

[0040] A pulley set 514 is connected to the bottom of one of the rotating disks 509, and a film-collecting roller 515 is sleeved and installed at one end of the pulley set 514 away from the rotating disk 509. The film-collecting roller 515 is rotatably connected to the frame 1, and one end of the film-collecting roller 515 is fixedly connected to a ratchet 516, and a clamping rod 517 is movably clamped on the top of the ratchet 516, and the clamping rod 517 is rotatably connected to the frame 1;

[0041] In this embodiment, the film lifting roller 4 is arranged to rotate and contact with the cross bar 507, so that when the film strip and the film are lifted, the friction and the pulling force can be reduced, so that the film is not easily broken or torn.

[0042] In this embodiment, one end of the swing arm 504 close to the cross bar 507 is in sliding contact with the cross bar 507 and has a certain movable space;

[0043] Embodiment 2:

[0044] See also Figures 7 to 12 The present embodiment provides a technical solution: the winding processing mechanism 8 includes two sliders 801 slidably connected to the mounting frame 6, a convex head 802 is fixedly connected to the outer wall of the slider 801, a screw motor 803 is arranged below the convex head 802, a lifting plate 804 is threadedly connected to the screw motor 803, the lifting plate 804 runs through both sides of the mounting frame 6, wedge blocks 805 are fixedly installed at both ends of the lifting plate 804, an electric push rod 806 is arranged on the front side of the mounting frame 6, and the electric push rod 80 6 are respectively provided with side rods 807 at both ends, and the side rods 807 are slidably connected to the mounting frame 6, and a flat plate 808 is provided in the middle of the two side rods 807, and the flat plate 808 is rotatably connected to the mounting frame 6, and the two ends of the flat plate 808 are respectively rotatably connected with pull rods 809, and one end of the pull rod 809 away from the flat plate 808 is rotatably connected to the side rod 807, and the two ends of the two side rods 807 are respectively fixedly connected with a release rod 810, and the output end of the electric push rod 806 is fixedly connected to one of the side rods 807;

[0045] The lifting plate 804 is provided with a heating wire 811, the height of which is lower than the bottom end height of the main roller 7, so as to prevent the film from being touched during the film rolling process. An elastic telescopic rod 812 is symmetrically provided on one side of the lifting plate 804, and a film blocking plate 813 is fixedly connected to the top of the elastic telescopic rod 812.

[0046] An installation roller 814 is arranged above the film baffle plate 813, and inner sets 815 are slidably connected at both ends of the installation roller 814, and a spring 1 816 is sleeved and installed at the connection between the installation roller 814 and the inner sets 815. An outer set 817 is fixedly installed on the inner wall of the slider 801, and the outer set 817 is movably sleeved with the inner set 815. One end of the inner set 815 away from the outer set 817 is movably engaged with a release rod 810, and the release rod 810 is used to disassemble and install the installation roller 814. A slip ring 818 is slidably connected to the outer set 817, and a spring 2 819 is sleeved and installed at the connection between the slip ring 818 and the outer set 817. The bottom of the two ends of the installation roller 814 is fixedly connected with a baffle rod 820, and a film-moving rod 821 is slidably connected to the slip ring 818, and the film-moving rod 821 abuts against the baffle rod 820.

[0047] A guide bar 822 is fixedly connected to the outer sleeve 817. The upper part of the guide bar 822 is arranged in an inclined surface, and the width of the upper part is greater than the width of the lower part. The film-moving rod 821 is slidably connected to the guide bar 822. A mounting plate 823 is arranged on the top of the outer sleeve 817. The bottom of the mounting plate 823 is rotatably connected to an inclined plate 824. One end of the inclined plate 824 is rotatably connected to a rotating block 825. The top of the rotating block 825 is slidably connected to the mounting plate 823, and a spring 826 is sleeved and installed. The surface of the inclined plate 824 abuts against the top of the slip ring 818. The function of the inclined plate 824 is to make the film-moving rod 821 open outward when it approaches the film.

[0048] The winding processing mechanism 8 also includes a buckle strip 827 and a second electric push rod 828 respectively arranged on the inner and outer sides of the mounting frame 6. The buckle strip 827 is made of a tough material and is used to push the film-pushing rod 821 to a low position. The second electric push rod 828 abuts against the convex head 802 to return the slider 801 to its original position.

[0049] In this embodiment, a notch for contacting the release rod 810 is provided on the inner sleeve 815, and a baffle for contacting the baffle rod 820 is installed on the film-moving rod 821;

[0050] The use method and advantages of the present invention: The working process of the plastic film blowing machine is as follows:

[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 As shown:

[0052] S1: Before film blowing begins, the film tape on the film receiving roller 515 is passed through the herringbone frame from the front guide roller 3 and the film lifting roller 4, so that the end of the film tape is located above the film blowing head 2, and then the film is lifted upward at the end of the film blowing head 2 to bond the newly opened film to the film tape, and then the transmission motor 501 is started. The transmission motor 501 drives the bevel gear 2 503 to rotate through the bevel gear 1 502. When the clamping head 505 slides in the guide groove, it drives the swing arm 504 to swing up and down reciprocatingly. When the swing arm 504 swings upward, it pulls the cross bar 507 and the film lifting roller 4 upward, and the film lifting roller 4 pulls the blown film upward through the film tape. After reaching the top, the swing arm 504 drives the film lifting roller 4 downward. During this process, the pressure plate 508 fixedly connected to one end of the cross bar 507 will The rotating plate 512 on the crawler 510 presses downward, and the horizontal plate 511 has a limiting effect on the pressure plate 508, so that when the pressure plate 508 moves downward, the crawler 510 is driven to rotate. When the crawler 510 rotates, the transmission pulley set 514 runs, and the pulley set 514 pulls the film-collecting roller 515, so that the film-collecting roller 515 rewinds the film belt, and the blown film is straightened and continuously moved upward. When the film-collecting roller 515 rotates, the ratchet wheel 516 rotates accordingly, and the clamping rod 517 is slightly lifted. When the ratchet wheel 516 does not rotate, the clamping rod 517 limits the ratchet wheel 516 to prevent the film belt from falling back. When the film is opened, the film belt is completely rolled onto the film-collecting roller 515, the film belt and the film are cut off, and the film is pulled onto the main roller 7 to roll up the film.

[0053] S2: After the film on the installation roller 814 is wound up, the screw motor 803 is started, and the screw motor 803 drives the lifting plate to move upward. During the process, the distance between the winding roller and the main roller 7 is enlarged during the winding process, so that the slider 801 slides toward the front side of the installation frame 6. When the lifting plate drives the wedge block 805 to rise, its surface pushes the convex head 802 toward the front side of the installation frame 6, so that the distance between the installation roller 814 and the main roller 7 is expanded. Subsequently, the electric push rod 828 is started to pull one of the side rods 807 toward the middle of the installation frame 6, and the other side rod 807 is synchronously pulled by the pull rod 809 and the flat plate 808 to move toward the middle of the installation frame 6, so that the release rod 810 on the side rod 807 can retract the inner set 815. At the same time, the electric heating wire 811 on the lifting plate is energized, and when it moves upward, it contacts the film between the main roller 7 and the installation roller 814, and the film is quickly thermally cut.

[0054] S3: After the release rod 810 retracts the inner set 815, the installation roller 814 is removed, and then the electric push rod 828 is started to push the protruding head 802 back to its original position. During the return process, the film-pushing rod 821 on the top of the slip ring 818 is caught by the buckle strip 827, so that the film-pushing rod 821 slides to the bottom of the slip ring 818 and gradually breaks contact with the buckle strip 827. When the outer set 817 moves synchronously with the slider 801, the top of the slip ring 818 contacts the surface of the inclined plate 824 and is squeezed, driving the film-pushing rod 821 to slide outward and open. The slip ring 818 compresses the spring 819. After passing the inclined plate 824, the slip ring 818 automatically returns to its original position under the action of the spring 819. When the film-shifting plate passes through the film, it does not contact the film. After passing through the film, it returns inward. Subsequently, a new installation roller 814 is placed on the inner sleeve 815 so that the installation roller 814 contacts the surface of the main roller 7. The installation roller 814 rotates to wind the film. When the installation roller 814 rotates, the film-shifting rod 821 is driven to rotate upward through the blocking rod 820. During the process, the film-shifting rod 821 drives the front side of the disconnected film to rotate upward so that the surface of the film adheres to the installation roller 814. During continuous rotation, the film-shifting rod 821 moves to the upper part of the guide strip 822, gradually moves outward, and breaks away from the contact with the film. The film is completely wrapped and attached to the installation roller 814 without any stacking.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit 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 to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A plastic film blowing machine, characterized in that: The machine comprises a frame (1), a film blowing head (2) is arranged at the bottom of the frame (1), a front guide roller (3) and a film lifting roller (4) are arranged at the top of the frame (1), a film lifting mechanism (5) is arranged on the side wall of the frame (1), a mounting frame (6) is arranged at the front side of the frame (1), a main guide roller (7) is rotatably connected to the middle part of the mounting frame (6), and a winding processing mechanism (8) is arranged at the front side of the mounting frame (6); The film lifting mechanism (5) comprises a transmission motor (501), the end of the output shaft of the transmission motor (501) is fixedly connected with a bevel gear 1 (502), the bevel gear 1 (502) is rotatably connected to the transmission motor (501), the top of the bevel gear 1 (502) is meshed with a bevel gear 2 (503), a swing arm (504) is arranged on the back of the bevel gear 2 (503), one end of the swing arm (504) is rotatably connected to the frame (1), a clamping head (505) is fixedly connected to the back of the bevel gear 2 (503), a through slot (506) is penetrated through the swing arm (504), the clamping head (505) is slidably installed in the through slot (506), a cross bar (507) is slidably installed on the top of the frame (1), one end of the cross bar (507) is movably connected to the end of the swing arm (504), and the film lifting roller (4) is sleeved and installed on the cross bar (507); One end of the cross bar (507) is fixedly connected to a pressing plate (508); two rotating disks (509) are symmetrically arranged on the side of the frame (1) close to the pressing plate (508); a crawler track (510) is sleeved and installed on the rotating disk (509); a plurality of cross plates (511) are equidistantly installed on the surface of the crawler track (510); a rotating plate (512) is hingedly connected to each of the cross plates (511); an insertion opening (513) is provided on the rotating plate (512); and the width of the insertion opening (513) is greater than the width of the cross plate (511); A belt pulley group (514) is connected to the bottom of one of the rotating disks (509); a film collecting roller (515) is sleeved and installed on one end of the belt pulley group (514) away from the rotating disk (509); the film collecting roller (515) is rotatably connected to the frame (1); one end of the film collecting roller (515) is fixedly connected to a ratchet (516); a clamping rod (517) is movably clamped at the top of the ratchet (516); and the clamping rod (517) is rotatably connected to the frame (1).

2. A plastic film blowing machine according to claim 1, characterized in that: The winding processing mechanism (8) comprises two sliders (801) slidably connected to the mounting frame (6); a protrusion (802) is fixedly connected to the outer wall of the slider (801); a screw motor (803) is arranged below the protrusion (802); a lifting plate (804) is threadedly connected to the screw motor (803); the lifting plate (804) passes through two sides of the mounting frame (6); and wedge blocks (805) are fixedly installed at both ends of the lifting plate (804).

3. A plastic film blowing machine according to claim 2, characterized in that: An electric push rod (806) is arranged on the front side of the mounting frame (6), and side rods (807) are respectively arranged at both ends of the electric push rod (806), and the side rods (807) are slidably connected to the mounting frame (6); a flat plate (808) is arranged in the middle of the two side rods (807), and the flat plate (808) is rotatably connected to the mounting frame (6); pull rods (809) are rotatably connected to the two ends of the flat plate (808), and one end of the pull rod (809) away from the flat plate (808) is rotatably connected to the side rod (807); a release rod (810) is respectively fixedly connected to the two ends of the two side rods (807), and the output end of the electric push rod (806) is fixedly connected to one of the side rods (807).

4. A plastic film blowing machine according to claim 2, characterized in that: The lifting plate (804) is provided with a heating wire (811), the height of the heating wire (811) being lower than the bottom height of the main roller (7), so as to prevent the heating wire from touching the film during the film rolling process.

5. A plastic film blowing machine according to claim 4, characterized in that: An elastic telescopic rod (812) is symmetrically arranged on one side of the lifting plate (804), and a film blocking plate (813) is fixedly connected to the top of the elastic telescopic rod (812).

6. A plastic film blowing machine according to claim 5, characterized in that: An installation roller (814) is arranged above the film baffle plate (813), and inner sleeves (815) are slidably connected to both ends of the installation roller (814), and a spring (816) is sleeved and installed at the connection between the installation roller (814) and the inner sleeve (815). An outer sleeve (817) is fixedly installed on the inner wall of the slider (801), and the outer sleeve (817) is movably sleeved with the inner sleeve (815).

7. A plastic film blowing machine according to claim 6, characterized in that: One end of the inner sleeve (815) away from the outer sleeve (817) is movably connected to a release rod (810), and the release rod (810) is used to disassemble and install the installation roller (814). A slip ring (818) is slidably connected to the outer sleeve (817), and a second spring (819) is sleeved and installed at the connection between the slip ring (818) and the outer sleeve (817). The bottoms of both ends of the installation roller (814) are fixedly connected to a blocking rod (820), and a film-moving rod (821) is slidably connected to the slip ring (818), and the film-moving rod (821) is in contact with the blocking rod (820).

8. A plastic film blowing machine according to claim 7, characterized in that: A guide bar (822) is fixedly connected to the outer sleeve (817); the upper portion of the guide bar (822) is arranged in an inclined surface, and the width of the upper portion is greater than the width of the lower portion; and the film-moving rod (821) is slidably connected to the guide bar (822).

9. A plastic film blowing machine according to claim 8, characterized in that: A mounting plate (823) is provided at the top of the outer sleeve (817), and the bottom of the mounting plate (823) is rotatably connected to an inclined plate (824), and one end of the inclined plate (824) is rotatably connected to a rotating block (825). The top of the rotating block (825) is slidably connected to the mounting plate (823) and is sleeved with a spring three (826). The surface of the inclined plate (824) abuts against the top of the slip ring (818), and the function of the inclined plate (824) is to enable the film-moving rod (821) to open outward when it approaches the film.

10. A plastic film blowing machine according to claim 1, characterized in that: The winding and processing mechanism (8) also includes a buckle strip (827) and an electric push rod (828) respectively arranged on the inner and outer sides of the mounting frame (6). The buckle strip (827) is set to a tough material and is used to buckle the film-moving rod (821) to a low position. The electric push rod (828) abuts against the protrusion (802) to return the slider (801) to its original position.

Images