A film blowing machine with automatic winding function

Abstract

The present invention discloses a film blowing machine with automatic winding function, which relates to the technical field of film blowing machines, and comprises a frame, a traction mechanism, and a winding mechanism. The traction mechanism comprises a U-shaped frame and a heat collecting shell, a suction fan is installed at the side of the outer side of the heat collecting shell, an active roller and a driven roller are rotatably installed between the two sides of the inner wall of the U-shaped frame, a servo motor is installed at the side of the outer side of the U-shaped frame, and a shifting tooth is fixedly installed at the side of the outer cylindrical surface of the active roller. The winding mechanism comprises a support frame, a stepping motor and a connecting drive disk are respectively installed on the top of the support frame, a winding roller is sleeved on the round rod at the center of the connecting drive disk, a clamping block is fixedly installed at the edge of the top of the connecting drive disk, and the clamping block is clamped with the winding roller, and a limiting component is installed at the side of the bottom of the support frame. The film blowing machine with automatic winding function achieves the effect of automatic winding, reduces the temperature difference between the traction component and the plastic film, and performs automatic winding, which is safe and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of film blowing machines, in particular to a film blowing machine with an automatic winding function. Background Art

[0002] The film blowing machine is a device that heats and melts plastic particles, extrude them, and then blows them into thin films. The plastic particles are added to the extruder barrel, heated and extruded by the screw to form a molten state, and then extruded from the head to form a tube blank. Air is blown into the tube blank to expand it and cool it to shape it. After traction and winding, a continuous plastic film is finally obtained. With the continuous development of science and technology and the rapid progress of society, the application of plastic films is increasing, and the plastic films produced by the film blowing machine are widely used. This kind of film can be widely used in 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.

[0003] At present, the existing film blowing machines are inconvenient to reel in the plastic film when processing the plastic film, and as the plastic film is continuously produced, confusion is prone to occur. At the same time, it is inconvenient to replace the reel, which affects the smooth normal work. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A film blowing machine with automatic winding function, comprising:

[0005] A frame, wherein the frame has a supporting frame body, a film blowing device is installed at the side of the outer side of the frame, and a film blowing head is installed at the discharge end of the film blowing device;

[0006] A traction mechanism, which is used to drive and lead out the plastic film, and is installed on the top of the frame and close to the film blowing machine;

[0007] The traction mechanism includes a U-shaped frame and a heat-collecting shell. The U-shaped frame is fixedly installed on the top of the frame and close to the discharge end of the film blowing machine. The heat-collecting shell is installed in the middle of the outer side of the film blowing machine. The plastic granule raw material is put into the film blowing machine to heat and melt the plastic granule raw material. The heat-collecting shell is used to cover the middle of the film blowing machine, which can achieve the effect of heat preservation, reduce the heat loss of the film blowing machine, and achieve the effect of energy saving. A suction fan is installed on the side of the outer side of the heat-collecting shell. Active rollers and driven rollers are rotatably installed between the two sides of the inner wall of the U-shaped frame. A servo motor is installed on the side of the outer side of the U-shaped frame. The output end is fixedly installed between the active roller through a coupling, and the active roller and the driven roller are both installed with a rotating connector at one end away from the servo motor. The rotating connector and the air outlet end of the suction fan are installed through an air pipe. The side of the outer cylindrical surface of the active roller is fixedly installed with a shifting tooth. The active roller can be driven to rotate by the rotation of the output end of the servo motor, and the plastic film between the active roller and the driven roller can be moved by the rotation of the active roller, so that the plastic film can be transported toward the discharge direction of the film blowing device, which helps to pull the continuously blown plastic film under the joint action of the film blowing device and the film blowing head, thereby promoting the continuous film blowing work;

[0008] A winding mechanism, which is used to roll up the plastic film, and is installed on the top of the frame and away from one end of the U-shaped frame;

[0009] Among them, the winding mechanism includes a support frame, which is fixedly installed on the top of the frame, and a stepper motor and a connecting drive disk are respectively installed on the top of the support frame. The output end of the stepper motor is connected to the connecting drive disk through a belt transmission assembly. A winding roller is sleeved on the round rod at the center of the connecting drive disk, and a clamping block is fixedly installed on the edge of the top of the connecting drive disk, and the clamping block is clamped with the winding roller. A limiting assembly is installed on the side of the bottom of the support frame.

[0010] Preferably, the driven roller is installed directly above the active roller, the shifting teeth are arc-shaped, and the shifting teeth are installed at a position close to the servo motor.

[0011] Preferably, an air inlet is provided at the side of the outer cylindrical surface of the heat collecting shell, an air duct is provided at the center of the active roller and the center of the driven roller, an exhaust hole is provided at the outer cylindrical surface of the active roller and the outer cylindrical surface of the driven roller, the exhaust hole is connected to the air duct, and the exhaust hole is provided at a position close to the shifting tooth, so that heat is gathered in the heat collecting shell, so that the air temperature in the heat collecting shell increases, and the suction fan is turned on to work, and the suction force generated by the suction fan is used to suck out the hot air in the heat collecting shell, and the hot air is transported through the air pipe so that the hot air enters the air duct, so that the active roller and the driven roller can be preheated, and the heat can be recovered and reused, so that the temperature of the active roller and the driven roller increases, which is conducive to the subsequent traction of the plastic film.

[0012] Preferably, the winding roller is installed directly above the stepping motor, and is rotatably installed between the winding roller and the support frame, and the axis of the winding roller coincides with the axis at the center of the connecting driving disk.

[0013] Preferably, the limiting assembly comprises a hydraulic rod, which is fixedly mounted on the bottom of the support frame, and the hydraulic rod is mounted on an end away from the stepping motor, and the output end of the hydraulic rod is fixedly mounted with a flat plate, and the top of the flat plate is fixedly mounted with an elastic connecting strip, and the top of the elastic connecting strip is fixedly mounted with an arc-shaped limiting plate, and a ball is rotatably mounted at the middle of the outer side of the arc-shaped limiting plate, and the ball is mounted on the side close to the winding roller, and a ball is rotatably mounted on the outer side of the arc-shaped limiting plate and close to the ball, and the clamping block is used to clamp the winding roller, and through the extension of the output end of the hydraulic rod and the connection between the flat plate and the elastic connecting strip, the arc-shaped limiting plate drives the ball and the ball to move upward, and the ball can be embedded in the end groove of the round rod at the center of the connecting driving disk, so that the structures can be clamped to each other, and it is beneficial for the arc-shaped limiting plate to limit the winding roller, so that the winding roller is not easy to fall off.

[0014] Preferably, the elastic connecting strip is arc-shaped, the number of the balls is two, and the two balls are symmetrically installed along the sphere, and the output end of the stepper motor is rotated, and under the transmission connection of the belt transmission assembly, the connecting drive disk drives the winding roller to rotate, thereby winding the plastic film, so that the plastic film is not easily disordered after being discharged;

[0015] The arc-shaped limit plate, the ball and the ball bearing can be separated from the end of the winding roller by contracting the output end of the hydraulic rod, so that the limit contact of the winding roller can be achieved, making it easy to remove the winding roller and unload the material.

[0016] Preferably, a cooling mechanism is installed in the middle of the top of the frame, and the cooling mechanism includes a straight-line hole and an I-shaped slider, the straight-line hole is opened at the side of the top of the frame, the I-shaped slider is slidably installed between the straight-line hole and the top of the frame, a refrigerator is fixedly installed on the top of the I-shaped slider, a blower is installed at the side of the outer side of the refrigerator, a reset spring is fixedly installed between the outer side of the I-shaped slider and the inner wall of the straight-line hole, a blowing assembly is installed in the middle of the top of the refrigerator, and a roller is rotatably installed at the side of the outer side of the refrigerator and close to the position of the shifting tooth, the shifting tooth can be driven to rotate by the rotation of the active roller, and the rotating shifting tooth contacts the roller so that the roller is subjected to a driving force, and under the sliding connection of the I-shaped slider, the refrigerator drives the blowing assembly as a whole to move in the direction of discharging the plastic film, and the reset spring is compressed;

[0017] As the shifting teeth continue to rotate, the shifting teeth are disengaged from the roller, so that the driving force on the roller disappears, and under the elastic force provided by the reset spring, the I-shaped slider drives the refrigerator to move in the opposite direction and reset, thereby causing the blowing assembly to move in the opposite direction. The blowing assembly can then be used to move back and forth to spray cold air back and forth to cool the plastic film, thereby achieving a good cooling effect.

[0018] Preferably, there are two straight-line holes, and the two straight-line holes are symmetrically installed along the central axis in the middle of the frame, and the position of the roller corresponds to the position of the shifting tooth.

[0019] Preferably, the blowing assembly includes a square tube, the bottom end of the square tube is connected to the air outlet end at the top of the refrigerator, the corresponding positions on the outside of the square tube are connected to triangular tubes, a polygonal cover shell is fixedly installed in the middle of the top of the triangular tube, a through hole is opened at the bending part of the top of the triangular tube, and rectangular holes are opened at the corresponding positions on the outside of the polygonal cover shell. The air temperature in the refrigerator is lowered and the blower is used to make the cold air enter the triangular tube through the transportation of the square tube. Under the action of gas flow pressure, the cold air passes through the through hole and enters the polygonal cover shell, so that the cold air is blown from the rectangular hole to the surface of the plastic film that is pulled out, so that the plastic film can be cooled, and the temperature is not easily over-high.

[0020] By installing triangular prism tubes and polygonal cover shells on the upper and lower parts of the plastic film, the surface and lower surface of the plastic film are cooled by cold air, so that the plastic film is cooled more evenly and local high temperature and local low temperature are less likely to occur.

[0021] Preferably, the through holes are evenly distributed at the bend of the top of the triangular tube, and the through holes are opened inside the polygonal cover shell. The positions of the through holes are staggered with those of the rectangular holes, so that when the cold air passes through the through holes and the rectangular holes in sequence, the gas flow path is curved, thereby reducing the gas flow speed, reducing the impact force of the airflow on the plastic film, making the plastic film less likely to deform, and thus protecting the plastic film.

[0022] The present invention provides a film blowing machine with an automatic winding function. It has the following beneficial effects:

[0023] 1. The film blowing machine with automatic winding function can drive the active roller to rotate by the rotation of the output end of the servo motor, and can move the plastic film between the active roller and the driven roller by the rotation of the active roller, so that the plastic film can be transported toward the discharge direction of the film blowing device, which helps to pull the continuously blown plastic film under the joint action of the film blowing device and the film blowing head, thereby promoting the continuous film blowing work.

[0024] Second, the film blowing machine with automatic winding function puts the plastic granule raw materials into the film blowing machine, heats and melts the plastic granule raw materials, and uses a heat-collecting outer shell to cover the middle of the film blowing machine, which can have a heat-insulating effect, reduce the heat loss of the film blowing machine, and achieve energy-saving effects.

[0025] 3. The film blowing machine with automatic winding function gathers heat in the heat-gathering outer shell, so that the air temperature in the heat-gathering outer shell increases, and uses the suction force generated by the suction fan to suck out the hot air in the heat-gathering outer shell, and transports the hot air through the air pipe, so that the hot air enters the airway, so as to preheat the active roller and the driven roller, recover and reuse the heat, so that the temperature of the active roller and the driven roller increases, which is helpful for the subsequent traction of the plastic film.

[0026] Fourth, the film blowing machine with automatic winding function uses the blowing of a blower to allow cold air to be transported from the square tube into the triangular tube. Under the action of gas flow pressure, the cold air passes through the through hole and enters the polygonal cover shell, so that the cold air is blown from the rectangular hole to the surface of the plastic film being pulled out, thereby cooling the plastic film and preventing the temperature from being too high.

[0027] 5. The film blowing machine with automatic winding function uses triangular prism tubes and polygonal cover shells installed on the upper and lower parts of the plastic film, so that the surface and lower surface of the plastic film are cooled by cold air, making the cooling of the plastic film more uniform and less prone to local high and local low temperatures.

[0028] 6. The film blowing machine with automatic winding function utilizes the staggered positions of the through holes and the rectangular holes so that when the cold air passes through the through holes and the rectangular holes in sequence, the gas flow path is curved, thereby reducing the gas flow speed, which can reduce the impact force of the airflow on the plastic film, making the plastic film less likely to deform, thereby protecting the plastic film.

[0029] 7. The film blowing machine with automatic winding function utilizes the driving force exerted on the roller by the rotating shifting teeth, so that the refrigerator drives the blowing assembly as a whole to move in the direction of plastic film discharge. As the shifting teeth continue to rotate, the shifting teeth are disengaged from the roller, so that the driving force exerted on the roller disappears, and under the elastic force provided by the reset spring sheet, the I-shaped slider drives the refrigerator to move and reset in the opposite direction, thereby causing the blowing assembly to move in the opposite direction, and the blowing assembly can be used to reciprocate to spray cold air to the plastic film for cooling, so that the cooling effect is good.

[0030] 8. The film blowing machine with automatic winding function, through the extension of the output end of the hydraulic rod and the connection between the flat plate and the elastic connecting strip, makes the arc-shaped limit plate drive the ball and the rolling ball to move upward, and the ball can be embedded in the end groove of the round rod at the center of the connecting drive disk, so that the structures can be clamped with each other, and the arc-shaped limit plate is conducive to limiting the winding roller, so that the winding roller is not easy to fall off.

[0031] 9. The film blowing machine with automatic winding function utilizes the rotation of the output end of the stepper motor and the transmission connection of the belt transmission component to make the connecting drive disk drive the winding roller to rotate, thereby automatically winding the plastic film, making it less likely for the plastic film to be disordered after being discharged, and the arc-shaped limit plate, the ball and the ball bearing can be separated from the end of the winding roller by contraction of the output end of the hydraulic rod, so that the winding roller can be limited and contacted, making it easy to remove the winding roller for unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the film blowing machine with automatic winding function of the present invention;

[0033] Figure 2 It is a bottom view structural schematic diagram of the film blowing machine with automatic winding function of the present invention;

[0034] Figure 3 It is a schematic diagram of the connection structure between the traction mechanism and the frame of the present invention;

[0035] Figure 4 It is a schematic diagram of the overall structure of the traction mechanism of the present invention;

[0036] Figure 5 It is a schematic diagram of the connection structure between the winding mechanism and the frame of the present invention;

[0037] Figure 6It is a schematic diagram of the overall structure of the winding mechanism of the present invention;

[0038] Figure 7 It is a schematic diagram of the overall structure of the limit assembly of the present invention;

[0039] Figure 8 It is a schematic diagram of the connection structure between the cooling mechanism and the frame of the present invention;

[0040] Fig. 9 It is a schematic diagram of the internal structure of the cross section of the triangular prism tube and the polygonal cover shell of the present invention.

[0041] In the figure: 1, frame; 2, film blowing device; 3, film blowing head; 4, traction mechanism; 5, winding mechanism; 6, cooling mechanism; 41, U-shaped frame; 42, heat collecting shell; 43, suction fan; 44, driving roller; 45, driven roller; 46, servo motor; 47, rotating connector; 48, shifting gear; 49, air inlet; 410, airway; 411, exhaust hole; 51, support frame; 52, stepping motor; 53, connecting drive disk; 54, winding roller; 55, Block; 56, limit assembly; 561, hydraulic rod; 562, flat plate; 563, elastic connecting strip; 564, arc limit plate; 565, sphere; 566, ball; 61, I-shaped hole; 62, I-shaped slider; 63, refrigerator; 64, blower; 65, reset spring; 66, blowing assembly; 67, roller; 661, square tube; 662, triangular tube; 663, through hole; 664, polygonal cover; 665, rectangular hole. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0043] The first embodiment, as Figure 1-Figure 4 As shown, the present invention provides a technical solution: a film blowing machine with automatic winding function, comprising:

[0044] A frame 1, the frame 1 having a supporting frame body, a film blowing device 2 is installed at the side of the outer side of the frame 1, and a film blowing head 3 is installed at the discharge end of the film blowing device 2;

[0045] A traction mechanism 4, which is used to drive and lead out the plastic film, and the traction mechanism 4 is installed on the top of the frame 1 and close to the film blowing device 2;

[0046] The traction mechanism 4 includes a U-shaped frame 41 and a heat-collecting shell 42. The U-shaped frame 41 is fixedly installed on the top of the frame 1 and close to the discharge end of the film blowing device 2. The heat-collecting shell 42 is installed in the middle of the outer side of the film blowing device 2. The staff puts the plastic granule raw material into the film blowing device 2, heats and melts the plastic granule raw material, and uses the heat-collecting shell 42 to cover the middle of the film blowing device 2, which can achieve the effect of heat preservation. A suction fan 43 is installed on the side of the outer side of the heat-collecting shell 42. An active roller 44 and a driven roller 45 are rotatably installed between the two sides of the inner wall of the U-shaped frame 41. A servo motor 46 is installed on the side of the outer side of the U-shaped frame 41. The output end of the servo motor 46 is fixedly installed between the active roller 44 through a coupling. , the active roller 44 and the driven roller 45 are both installed with a rotating connector 47 at one end away from the servo motor 46, and the rotating connector 47 is installed with the air outlet end of the suction fan 43 through an air pipe. A shifting tooth 48 is fixedly installed on the side of the outer cylindrical surface of the active roller 44. The staff turns on the servo motor 46 to work, and the active roller 44 can be driven to rotate by the rotation of the output end of the servo motor 46. The plastic film between the active roller 44 and the driven roller 45 can be moved by the rotation of the active roller 44, and the plastic film can be transported toward the discharge direction of the film blowing device 2, which helps to pull the plastic film that is continuously blown out under the joint action of the film blowing device 2 and the film blowing head 3, thereby promoting the continuous film blowing work;

[0047] An air inlet 49 is provided at the side of the outer circumferential surface of the heat collecting shell 42, an air duct 410 is provided at the center of the active roller 44 and the center of the driven roller 45, an exhaust hole 411 is provided at the outer circumferential surface of the active roller 44 and the outer circumferential surface of the driven roller 45, and the exhaust hole 411 is connected with the air duct 410. The exhaust hole 411 is provided at a position close to the shifting tooth 48, so that heat is collected in the heat collecting shell 42, so that the air temperature in the heat collecting shell 42 increases, and the suction fan 43 is turned on to work, and the hot air in the heat collecting shell 42 is sucked out by the suction force generated by the suction fan 43, and the hot air is transported through the air pipe so that the hot air enters the air duct 410, so that the active roller 44 and the driven roller 45 can be preheated, and the heat can be recycled and reused, so that the temperature of the active roller 44 and the driven roller 45 increases, which is helpful for the subsequent traction of the plastic film;

[0048] The driven roller 45 is installed just above the driving roller 44 . The shifting tooth 48 is arc-shaped and is installed at a position close to the servo motor 46 .

[0049] The second embodiment, as Figure 5-Figure 7 As shown, a winding mechanism 5 is used to roll up the plastic film, and the winding mechanism 5 is installed on the top of the frame 1 and away from one end of the U-shaped frame 41;

[0050] Among them, the winding mechanism 5 includes a support frame 51, which is fixedly installed on the top of the frame 1, and a stepper motor 52 and a connecting drive disk 53 are respectively installed on the top of the support frame 51. The output end of the stepper motor 52 is connected to the connecting drive disk 53 through a belt transmission assembly. A winding roller 54 is sleeved on the round rod at the center of the connecting drive disk 53, and a clamping block 55 is fixedly installed on the edge of the top of the connecting drive disk 53. The clamping block 55 is clamped with the winding roller 54, and a limiting assembly 56 is installed on the side of the bottom of the support frame 51.

[0051] The winding roller 54 is installed directly above the stepping motor 52 , and is rotatably installed between the winding roller 54 and the support frame 51 , and the axis of the winding roller 54 coincides with the axis at the center of the connecting driving disk 53 .

[0052] The limiting assembly 56 includes a hydraulic rod 561, which is fixedly mounted on the bottom of the support frame 51, and the hydraulic rod 561 is mounted at one end away from the stepper motor 52. A flat plate 562 is fixedly mounted on the output end of the hydraulic rod 561, and an elastic connecting strip 563 is fixedly mounted on the top of the flat plate 562. An arc-shaped limiting plate 564 is fixedly mounted on the top of the elastic connecting strip 563. A ball 565 is rotatably mounted in the middle of the outer side of the arc-shaped limiting plate 564. The ball 565 is mounted on the side close to the winding roller 54, and the outer side of the arc-shaped limiting plate 564 and the position close to the ball 565 rolls. A ball 566 is installed, and the winding roller 54 is sleeved on the round rod at the center of the connecting drive disk 53, and is clamped with the winding roller 54 by using the clamping block 55. Through the extension of the output end of the hydraulic rod 561 and the connection between the flat plate 562 and the elastic connecting strip 563, the arc-shaped limiting plate 564 drives the ball 565 and the ball 566 to move upward, and the ball 565 can be embedded in the end groove of the round rod at the center of the connecting drive disk 53, so that the structures can be clamped with each other, and the arc-shaped limiting plate 564 is beneficial to the limitation of the winding roller 54, so that the winding roller 54 is not easy to fall off.

[0053] The elastic connecting strip 563 is arc-shaped, and there are two balls 566, which are symmetrically installed along the sphere 565. The stepper motor 52 is turned on to work, and the output end of the stepper motor 52 is rotated, and under the transmission connection of the belt transmission component, the connecting drive disk 53 drives the winding roller 54 to rotate, so as to wind up the plastic film, so that the plastic film is not easy to be disordered after being discharged;

[0054] The output end of the hydraulic rod 561 can be retracted to disengage the arc-shaped limit plate 564, the ball 565 and the ball bearing 566 from the end of the winding roller 54, so that the winding roller 54 can be limited and contacted, making it easier to remove the winding roller 54 for unloading.

[0055] The third embodiment, as Figure 1-Figure 4 and Figure 8-Figure 9As shown, based on the first embodiment:

[0056] A cooling mechanism 6 is installed in the middle of the top of the rack 1. The cooling mechanism 6 includes a straight hole 61 and an I-shaped slider 62. The straight hole 61 is opened at the side of the top of the rack 1. The I-shaped slider 62 is slidably installed between the straight hole 61 and the top of the rack 1. A refrigerator 63 is fixedly installed on the top of the I-shaped slider 62. A blower 64 is installed on the side of the outer side of the refrigerator 63. A reset spring 65 is fixedly installed between the outer side of the I-shaped slider 62 and the inner wall of the straight hole 61. A blowing assembly 66 is installed in the middle of the top of the refrigerator 63, and a roller 67 is rotatably installed at the side of the outer side of the refrigerator 63 and close to the position of the shifting tooth 48. The shifting tooth 48 can be driven to rotate by the rotation of the active roller 44, and the rotating shifting tooth 48 contacts the roller 67, so that the roller 67 is driven by a driving force, and under the sliding connection of the I-shaped slider 62, the refrigerator 63 drives the blowing assembly 66 to move in the direction of the plastic film discharge, and the reset spring 65 is compressed;

[0057] As the shifting tooth 48 continues to rotate, the shifting tooth 48 is disengaged from the roller 67, so that the driving force on the roller 67 disappears, and under the elastic force provided by the reset spring 65, the I-shaped slider 62 drives the refrigerator 63 to move in the opposite direction and reset, so that the blowing assembly 66 moves in the opposite direction, and the blowing assembly 66 can be used to move back and forth to spray cold air to the plastic film for cooling, so that the cooling effect is good.

[0058] There are two straight-line holes 61 , and the two straight-line holes 61 are symmetrically installed along the central axis of the middle of the frame 1 , and the position of the roller 67 corresponds to the position of the shifting tooth 48 .

[0059] The blowing assembly 66 includes a square tube 661, the bottom end of the square tube 661 is connected to the air outlet end at the top of the refrigerator 63, the corresponding positions on the outside of the square tube 661 are connected to the triangular tube 662, a polygonal cover shell 664 is fixedly installed in the middle of the top of the triangular tube 662, a through hole 663 is opened at the bending part of the top of the triangular tube 662, and rectangular holes 665 are opened at the corresponding positions on the outside of the polygonal cover shell 664. When the refrigerator 63 is turned on to work, the air temperature in the refrigerator 63 is reduced, and the blower 64 is used to blow the cold air transported by the square tube 661 into the triangular tube 662. Under the action of the gas flow pressure, the cold air passes through the through hole 663 and enters the polygonal cover shell 664, so that the cold air is blown from the rectangular hole 665 to the surface of the plastic film that is pulled out, thereby cooling the plastic film.

[0060] By installing the triangular prism tube 662 and the polygonal cover shell 664 on the upper and lower parts of the plastic film, the surface and the lower surface of the plastic film are cooled by cold air, so that the cooling of the plastic film is more uniform.

[0061] The through holes 663 are evenly distributed at the bend at the top of the triangular tube 662. The through holes 663 are opened inside the polygonal cover 664. The positions of the through holes 663 and the rectangular holes 665 are staggered, so that when the cold air passes through the through holes 663 and the rectangular holes 665 in turn, the gas flow path is curved, thereby reducing the gas flow speed and reducing the impact force of the airflow on the plastic film.

[0062] When in use, the staff first puts the plastic granule raw material into the film blowing machine 2, heats and melts the plastic granule raw material, and uses the heat collecting shell 42 to cover the middle of the film blowing machine 2 to achieve the effect of heat preservation, and blows the film under the joint action of the film blowing machine 2 and the film blowing head 3;

[0063] At this time, the suction fan 43 is turned on to work, and the hot air in the heat collecting shell 42 is sucked out by the suction force generated by the suction fan 43, and the hot air is transported through the air pipe so that the hot air enters the air duct 410, so that the active roller 44 and the driven roller 45 can be preheated, and the heat can be recovered and reused, so that the temperature of the active roller 44 and the driven roller 45 is increased;

[0064] The staff turns on the servo motor 46 to work. The active roller 44 can be driven to rotate by the rotation of the output end of the servo motor 46. The plastic film between the active roller 44 and the driven roller 45 can be moved by the rotation of the active roller 44, so that the plastic film can be transported toward the discharge direction of the film blowing device 2, which helps the film blowing device 2 and the film blowing head 3 to pull the continuously blown plastic film, thereby promoting the continuous film blowing work;

[0065] The refrigerator 63 is turned on to work, so that the air temperature in the refrigerator 63 is reduced, and the blower 64 is used to blow the cold air through the square tube 661 into the triangular tube 662. Under the action of gas flow pressure, the cold air passes through the through hole 663 and enters the polygonal cover 664, so that the cold air is blown from the rectangular hole 665 to the surface of the plastic film that is pulled out, thereby cooling the plastic film.

[0066] By installing the triangular prism tube 662 and the polygonal cover shell 664 on the upper and lower parts of the plastic film, the surface and the lower surface of the plastic film are cooled by cold air, so that the plastic film is cooled more evenly;

[0067] The active roller 44 is rotated to drive the shifting teeth 48 to rotate, and the rotating shifting teeth 48 are in contact with the roller 67, so that the roller 67 is driven by a force, and under the sliding connection of the I-shaped slider 62, the refrigerator 63 drives the blowing assembly 66 to move in the direction of the plastic film discharge, and the reset spring 65 is compressed;

[0068] As the shifting tooth 48 continues to rotate, the shifting tooth 48 is disengaged from the roller 67, so that the driving force on the roller 67 disappears, and under the elastic force provided by the reset spring 65, the I-shaped slider 62 drives the refrigerator 63 to move in the reverse direction and reset, so that the blowing assembly 66 moves in the reverse direction, and the blowing assembly 66 can be used to reciprocate and spray cold air to the plastic film for cooling, so that the cooling effect is good;

[0069] The winding roller 54 is sleeved on the round rod at the center of the connecting drive disk 53, and the clamping block 55 is used to clamp the winding roller 54. Through the extension of the output end of the hydraulic rod 561 and the connection between the flat plate 562 and the elastic connecting strip 563, the arc-shaped limiting plate 564 drives the ball 565 and the ball 566 to move upward, and the ball 565 can be embedded in the end groove of the round rod at the center of the connecting drive disk 53, so that the structures can be clamped to each other, and the arc-shaped limiting plate 564 is conducive to limiting the winding roller 54, so that the winding roller 54 is not easy to fall off;

[0070] The stepper motor 52 is turned on to work, and the output end of the stepper motor 52 is rotated, and under the transmission connection of the belt transmission component, the connecting drive disk 53 drives the winding roller 54 to rotate, thereby winding the plastic film, so that the plastic film is not easily disordered after being discharged;

[0071] When the plastic film is rolled up, the output end of the hydraulic rod 561 can be retracted to disengage the arc-shaped limit plate 564, the ball 565 and the ball 566 from the end of the winding roller 54, so that the winding roller 54 can be limited and contacted, making it easy to remove the winding roller 54 for unloading.

[0072] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A film blowing machine with automatic winding function, characterized in that: include: A frame (1), the frame (1) having a frame body with a supporting function, a film blowing device (2) being installed at the side of the outer side of the frame (1), and a film blowing head (3) being installed at the discharge end of the film blowing device (2); A traction mechanism (4), the traction mechanism (4) being used to drive and lead out the plastic film, the traction mechanism (4) being installed on the top of the frame (1) and close to the film blowing device (2); The traction mechanism (4) comprises a U-shaped frame (41) and a heat collecting shell (42), wherein the U-shaped frame (41) is fixedly mounted on the top of the frame (1) and close to the discharge end of the film blowing device (2), the heat collecting shell (42) is mounted in the middle of the outer side of the film blowing device (2), a suction fan (43) is mounted on the side of the outer side of the heat collecting shell (42), and a driving roller (44) and a driven roller (45) are rotatably mounted between the two sides of the inner wall of the U-shaped frame (41), and the A servo motor (46) is installed at the side of the outer side of the U-shaped frame (41); the output end of the servo motor (46) is fixedly installed between the active roller (44) and the driven roller (45) via a coupling; a rotating connector (47) is installed at one end of the active roller (44) and the driven roller (45) away from the servo motor (46); the rotating connector (47) and the air outlet end of the suction fan (43) are installed via an air pipe; and a shifting tooth (48) is fixedly installed at the side of the outer circumferential surface of the active roller (44); A winding mechanism (5), the winding mechanism (5) being used to wind up the plastic film, the winding mechanism (5) being mounted on the top of the frame (1) and away from one end of the U-shaped frame (41); The winding mechanism (5) comprises a support frame (51), the support frame (51) is fixedly mounted on the top of the frame (1), a stepper motor (52) and a connecting drive disk (53) are respectively mounted on the top of the support frame (51), the output end of the stepper motor (52) and the connecting drive disk (53) are connected to each other through a belt transmission assembly, a winding roller (54) is sleeved on a round rod at the center of the connecting drive disk (53), a clamping block (55) is fixedly mounted on the edge of the top of the connecting drive disk (53), the clamping block (55) is clamped to the winding roller (54), and a limiting assembly (56) is mounted on the side of the bottom of the support frame (51); A cooling mechanism (6) is installed in the middle of the top of the frame (1), and the cooling mechanism (6) comprises a straight hole (61) and an I-shaped slider (62). The straight hole (61) is opened at the side of the top of the frame (1), and the I-shaped slider (62) is slidably installed between the straight hole (61) and the top of the frame (1). A refrigerator (63) is fixedly installed on the top of the I-shaped slider (62), and a blower (64) is installed on the side of the outside of the refrigerator (63). A reset spring (65) is fixedly installed between the outside of the I-shaped slider (62) and the inner wall of the straight hole (61). A blowing assembly (66) is installed in the middle of the top of the refrigerator (63), and a roller (67) is rotatably installed on the side of the outside of the refrigerator (63) and close to the shifting tooth (48). The blowing assembly (66) comprises a square tube (661), the bottom end of the square tube (661) is connected to the air outlet end at the top of the refrigerator (63), the corresponding positions on the outside of the square tube (661) are connected to triangular tubes (662), a polygonal cover shell (664) is fixedly installed in the middle of the top of the triangular tube (662), a through hole (663) is opened at the bend of the top of the triangular tube (662), and rectangular holes (665) are opened at corresponding positions on the outside of the polygonal cover shell (664).

2. The film blowing machine with automatic winding function according to claim 1, characterized in that: The driven roller (45) is installed directly above the active roller (44); the shifting tooth (48) is arc-shaped, and the shifting tooth (48) is installed at a position close to the servo motor (46).

3. The film blowing machine with automatic winding function according to claim 1, characterized in that: An air inlet (49) is provided at the side of the outer circumferential surface of the heat collecting shell (42), an air passage (410) is provided at the center of the active roller (44) and the center of the driven roller (45), an exhaust hole (411) is provided at the outer circumferential surface of the active roller (44) and the outer circumferential surface of the driven roller (45), the exhaust hole (411) is connected to the air passage (410), and the exhaust hole (411) is provided at a position close to the shifting tooth (48).

4. The film blowing machine with automatic winding function according to claim 1, characterized in that: The winding roller (54) is installed directly above the stepping motor (52), and the winding roller (54) is rotatably installed between the support frame (51), and the axis of the winding roller (54) coincides with the axis at the center of the connecting drive disk (53).

5. The film blowing machine with automatic winding function according to claim 1, characterized in that: The limiting assembly (56) comprises a hydraulic rod (561), wherein the hydraulic rod (561) is fixedly mounted on the bottom of the support frame (51), the hydraulic rod (561) is mounted at an end away from the stepping motor (52), a flat plate (562) is fixedly mounted on the output end of the hydraulic rod (561), an elastic connecting strip (563) is fixedly mounted on the top of the flat plate (562), an arc-shaped limiting plate (564) is fixedly mounted on the top of the elastic connecting strip (563), a round ball (565) is rotatably mounted in the middle of the outer side of the arc-shaped limiting plate (564), the round ball (565) is mounted on a side close to the winding roller (54), and a ball (566) is rotatably mounted on the outer side of the arc-shaped limiting plate (564) and close to the round ball (565).

6. The film blowing machine with automatic winding function according to claim 5, characterized in that: The elastic connecting strip (563) is arc-shaped, and there are two balls (566), and the two balls (566) are symmetrically installed along the sphere (565).

7. The film blowing machine with automatic winding function according to claim 1, characterized in that: There are two straight-line holes (61), and the two straight-line holes (61) are symmetrically installed along the central axis in the middle of the frame (1), and the position of the roller (67) corresponds to the position of the shifting tooth (48).

8. The film blowing machine with automatic winding function according to claim 1, characterized in that: The through holes (663) are evenly distributed at the bend at the top of the triangular prism tube (662), and the through holes (663) are opened inside the polygonal cover shell (664).

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