Dustproof PE protective film extrusion equipment

Abstract

The invention discloses dustproof PE protective film extrusion equipment, and relates to the technical field of PE protective film extrusion, the dustproof PE protective film extrusion equipment comprises a base, the middle position of the top of the base is fixedly connected with a first lead screw sliding table, the top of the base is fixedly connected with a second lead screw sliding table, and the output end of the second lead screw sliding table is fixedly connected with hot melting equipment; the mold further comprises a demolding mechanism, and the bottom of the demolding mechanism is fixedly installed on the top of the first lead screw sliding table. According to the dustproof PE protective film extrusion equipment, plastic particles pass through the demolding mechanism and the material injection mechanism to form a tubular protective film, the film pulling mechanism pulls the tubular protective film to penetrate through the calendering mechanism, the calendering mechanism enables the tubular protective film to be calendered into a PE protective film, the PE protective film is guided to the winding roller, and the winding roller rotates to enable the PE protective film to be wound. In the process, the PE protective film is not prone to being interfered by dust during forming due to the fact that the two protective half shells move oppositely to be closed.

Description

Technical Field

[0001] The invention relates to the technical field of PE protective film extrusion, in particular to dustproof PE protective film extrusion equipment. Background Art

[0002] Co-extrusion film blowing machine refers to a device that heats and melts plastic particles and then extrude them into thin films. Co-extrusion film blowing machine usually includes a basic extrusion device and a molding die. When in use, plastic particles are put into the extrusion device, melted, mixed and extruded in the extrusion device, and then formed by the die. Although the film blowing machine realizes the production of thin films, during the film transmission process, dust is easily adhered to its outer surface, which increases the risk of static electricity. Therefore, traditional film blowing machines are not convenient for dust removal and static electricity removal of the film. The film is cooled by water cooling. Therefore, after the extrusion roller extrude the film, water stains will adhere to its surface, and dust will also adhere to the extrusion roller along with the water stains, which will affect the flatness of the film extrusion and affect the product quality. The Chinese patent announcement number is: CN117183302A, which discloses "A film blowing machine for the production of release films". When in use, the annular extruded base material cooperates with the circular blowing structure to form a uniform film evenly and stably, solving the problem of uneven film structure after the existing single-sided extrusion blow molding equipment is blown. In addition, the blow molding and coating integrated equipment is adopted, and the outer side of the barrel-shaped film is directly coated with a double-layer film folded into a film, and then directly formed after segmentation, which reduces the processing steps, improves the processing efficiency and reduces the equipment cost.

[0003] The existing dust-proof PE protective film extrusion equipment has structural design defects. The film blowing equipment needs manual operation when starting and loading, which makes dust easily adsorbed on the surface of the film. When the film blowing equipment stops production, the raw materials of the film blowing equipment extruder are not cleaned, which easily causes blockage. Summary of the invention

[0004] The present invention provides a dustproof PE protective film extrusion device, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A dustproof PE protective film extrusion device, comprising a base, a first screw slide is fixedly connected to the middle position of the top of the base, a second screw slide is fixedly connected to the top of the base, and a hot melt device is fixedly connected to the output end of the second screw slide, and further comprising: A demoulding mechanism, the bottom of which is fixedly mounted on the top of the first screw slide, and the demoulding mechanism is used for guiding the extrusion of hot-melt PE plastic and the inflation of the inside of the tubular plastic film; the demoulding mechanism comprises a hydraulic cylinder and a telescopic cylinder, the output end of the hydraulic cylinder is fixedly connected to a bending rod, the top end of the bending rod is fixedly connected to a guide shell, and the output end of the telescopic cylinder is fixedly connected to a shearing knife; An opening and closing mechanism, the bottom of which is fixedly mounted on the output end of the first screw slide, and the opening and closing mechanism is used to isolate and protect the tubular plastic film from dust in the workshop; An injection mechanism, wherein the injection mechanism is fixedly mounted on the inner side of the opening and closing mechanism, and the inner side of the injection mechanism and the outer surface of the demoulding mechanism form a hot melt plastic flow molding gap; A film-pulling mechanism, which is fixedly mounted on the inner side of the opening and closing mechanism and is used for pulling and guiding the tubular plastic film in the initial stage of forming; The calendering mechanism is fixedly mounted on the inner side of the opening and closing mechanism near the film-drawing mechanism, and is used for calendering and guiding the tubular plastic film.

[0006] Preferably, a bracket is fixedly connected to the outer surface of the hydraulic cylinder, and the top of the bracket is fixedly connected to the outer surface of the telescopic cylinder. There are two shearing knives, and the two shearing knives are symmetrically installed on both sides of the telescopic cylinder.

[0007] Preferably, the opening and closing mechanism includes a protective half shell, the bottom of which is fixedly mounted on the output end of the first screw slide, the output ends of the first screw slide are two, the number of the protective half shells is two, and an injection mold is provided below the surface of one of the protective half shells, the first screw slide is used to drive the two protective half shells to come together or apart, when the two protective half shells come together, one end of the winding roller extends to the interior of the hollow motor, the end surface of the winding roller is made of magnetic material, the hollow motor drives the winding roller to rotate by magnetic action, the second screw slide drives the hot melt device to approach the injection mold, the output end of the hot melt device extends to the inner side of the injection mold, the PE plastic particles are formed into a fluid by the extrusion and shearing action of the hot melt device and are injected into the interior of the injection mold.

[0008] Preferably, the opening and closing mechanism further comprises an air inlet pipe, which is fixedly installed at a position below the surface of the protective half shell, and an air outlet pipe is fixedly connected to a position above the surface of the protective half shell.

[0009] Preferably, the inner side surface of one of the protective half shells is fixedly connected to a hollow motor, and the inner side surface of the other protective half shell is rotatably connected to a winding roller. The upper positions of the surfaces of the two protective half shells are fixedly connected to refrigerators. Before the two protective half shells are combined, the hydraulic cylinder drives the bending rod to move upward until the guide shell is lifted to the position of the injection mold. Subsequently, the two protective half shells are combined, and the injection mold is combined with the two guide shells to form a cavity and a gap between the two guide shells and the guide shells. The hot-melt plastic is injected into the interior of the injection mold and then extruded into the interior of the cavity.

[0010] Preferably, the injection mechanism comprises a fixing rod, one end of which is fixedly mounted at a position below the surface of the protective half shell, and one end of the fixing rod away from the protective half shell is fixedly connected to the drainage shell.

[0011] Preferably, a ventilation pipe is fixedly connected to the lower position of the drainage shell surface, one end of the ventilation pipe extends to the outside of the protective half shell, and one end of the ventilation pipe away from the protective half shell is fixedly connected to the semi-cylinder.

[0012] Preferably, the film-drawing mechanism includes an annular guide rail, the surface of which is fixedly mounted on the inner side of the protective half shell, the output end of the annular guide rail is fixedly connected to a first linear guide rail, the air inlet pipe injects hot air into the interior of the protective half shell, and the air outlet pipe discharges the hot air from the interior of the protective half shell. The tubular PE plastic film is not stable enough in the initial stage of molding, and requires heated air to facilitate film drawing and calendering. After the PE plastic film is calendered, that is, when the PE plastic film is moved to the refrigerator, the hot air is cooled, which increases the hardness of the PE plastic film and makes it less likely to adhere or tear. The P-shaped structure of the protective half shell allows airflow to flow inside it to promote the molding of the PE plastic film.

[0013] Preferably, the film-pulling mechanism further comprises a support block, the middle portion of the surface of the support block is fixedly mounted on the output end of the first linear guide rail, and a side of the support block away from the first linear guide rail is fixedly connected to a telescopic motor.

[0014] Preferably, the output end of the telescopic motor is fixedly connected to a straight rod, and the end of the straight rod away from the telescopic motor is fixedly connected to an elastic ring, and the surface of the elastic ring is fixedly connected to a sphere, and the two drainage shells are tightly fitted when the protective half shells are combined, and a gap is formed between the drainage shell and the guide shell, and the two semi-cylinders are combined, and the bottom of the guide shell is set higher than the top of the semi-cylinder to prevent interference between the drainage shell and the guide shell, and hot-melt plastic is filled into the cavity between the drainage shell and the guide shell, and the annular guide rail drives the first linear guide rail to move to a position directly above the drainage shell, and the first linear guide rail drives the support block to move downward, and the elastic ring is driven to be at the top of the drainage shell.

[0015] Preferably, the calendering mechanism comprises a second linear guide rail, the surface of which is fixedly mounted above the inner side surface of the protective half shell, and there are two second linear guide rails.

[0016] Preferably, the output ends of the two second linear guide rails are respectively fixedly connected to a plate body and an extension plate, the surfaces of the plate body and the extension plate are rotatably connected to guide rollers, the bottom of the extension plate is fixedly connected to a guide plate, and the annular guide rail is used to drive the elastic ring to move in an annular manner along the inner side surface of the protective half shell, and the first linear guide rail and the straight rod are used to control the elastic ring to move down a certain distance so that the bottom of the elastic ring can contact the gap between the drainage shell and the diversion shell, the sphere increases the connection tightness between the plastic and the elastic ring, and the annular structure of the elastic ring makes the wall thickness of the tubular plastic film more uniform when it is pulled upward.

[0017] The present invention provides a dustproof PE protective film extrusion device, which has the following beneficial effects: 1. In the dustproof PE protective film extrusion equipment, plastic particles are formed into a tubular protective film through a demoulding mechanism and an injection mechanism. The film-drawing mechanism pulls the tubular protective film through a calendering mechanism. The calendering mechanism calenders the tubular protective film into a PE protective film. The PE protective film is guided to a winding roller. The rotation of the winding roller causes the PE protective film to be wound up. In this process, the closure of the two protective half shells moving in opposite directions makes the PE protective film less susceptible to dust interference during molding.

[0018] 2. This dust-proof PE protective film extrusion equipment, after the protective film is wound, the existing device adopts an integral structure to form the protective film. The plastic inside the cavity is difficult to take out and is very easy to solidify. Using a multi-tube structure to inject hot-melt plastic will aggravate the problem of difficult cleaning. In this device, the two drainage shells are separated, and the solidified PE plastic is coated on the outer surface of the guide shell. The guide shell moves down, and the telescopic cylinder drives the shear knife to cut the PE plastic, making the extrusion mold easier to clean and convenient for next use. It solves the problem that when the film blowing equipment stops production, the raw materials of the extruder of the film blowing equipment are not cleaned and easily cause blockage.

[0019] 3. In the dust-proof PE protective film extrusion equipment, at the initial stage of PE film forming, the two protective half shells are in a closed state, the annular guide rail drives the elastic ring to pull the top of the PE film, the PE film is pulled upward, the elastic ring drives the PE film to move to the winding roller, the hollow motor drives the winding roller to rotate, the winding roller makes the PE film be quickly pulled and wound, the elastic ring is separated from the PE film, there is no need to manually pull the initial PE film to wind in this process, and the protection of the protective half shell can effectively prevent dust from adhering to the surface of the PE film.

[0020] 4. In the dust-proof PE protective film extrusion equipment, the hot melt plastic is in close contact with the elastic ring and the sphere to solidify. Then, the annular guide rail drives the elastic ring to move upward, and the vent pipe introduces hot air into the interior of the semi-cylinder. The hot air goes upward to the interior of the PE plastic film, so that the PE film can be formed into a tubular plastic film. The hot air flowing inside the protective half shell can effectively balance the wind pressure inside and outside the PE film, preventing the internal wind pressure of the PE film from being too large and shaking.

[0021] 5. The dust-proof PE protective film extrusion equipment has a telescopic motor that allows the two protective half shells to be brought together or apart. Secondly, when the elastic ring moves to the position below the guide roller, the second linear guide drives the guide rollers away from each other, and the telescopic motor drives the elastic ring to rotate. The elastic ring drives the plastic film to pass through the guide roller. After the elastic ring pulls the plastic film through, the plate body and the extension plate are combined to calender the plastic film, which solves the problem that the film blowing equipment requires manual operation when starting and loading, which causes dust to be easily adsorbed on the surface of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a stereoscopic diagram of the whole dustproof PE protective film extrusion equipment of the present invention; Figure 2 A perspective view of the front interior of the dustproof PE protective film extrusion equipment of the present invention; Figure 3 A three-dimensional diagram of the inner back of the dustproof PE protective film extrusion equipment of the present invention; Figure 4 It is a partial structural schematic diagram of the dustproof PE protective film extrusion equipment of the present invention; Figure 5 It is a structural schematic diagram of the demoulding mechanism of the present invention; Figure 6 It is a structural schematic diagram of the opening and closing mechanism of the present invention; Figure 7 It is a structural schematic diagram of the injection mechanism of the present invention; Figure 8 It is a structural schematic diagram of the film pulling mechanism of the present invention; Fig. 9 It is a structural schematic diagram of the calendering mechanism of the present invention.

[0023] In the figure: 1, base; 2, first screw slide; 3, demoulding mechanism; 31, hydraulic cylinder; 32, bracket; 33, telescopic cylinder; 34, shear knife; 35, bending rod; 36, guide shell; 4, opening and closing mechanism; 41, protective half shell; 42, injection mold; 43, air inlet pipe; 44, hollow motor; 45, winding roller; 46, air outlet pipe; 47, refrigerator; 5, injection mechanism; 51, fixing rod; 5 2. Drainage shell; 53. Ventilation pipe; 54. Semi-cylinder; 6. Film pulling mechanism; 61. Annular guide rail; 62. First linear guide rail; 63. Support block; 64. Telescopic motor; 65. Straight rod; 66. Elastic ring; 67. Ball; 7. Calendering mechanism; 71. Second linear guide rail; 72. Plate body; 73. Extension plate; 74. Guide roller; 75. Guide plate; 8. Second screw slide; 9. Hot melt equipment. DETAILED DESCRIPTION

[0024] 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0025] First embodiment: Figure 1-Figure 4 , Figure 6 As shown, the present invention provides a technical solution: a dustproof PE protective film extrusion device, comprising a base 1, a first screw slide 2 is fixedly connected to the middle position of the top of the base 1, a second screw slide 8 is fixedly connected to the top of the base 1, and a hot melt device 9 is fixedly connected to the output end of the second screw slide 8, and also includes: The demoulding mechanism 3, the bottom of which is fixedly mounted on the top of the first screw slide 2, is used for guiding the extrusion of the hot-melt PE plastic and for inflating the inside of the tubular plastic film; An opening and closing mechanism 4, the bottom of which is fixedly mounted on the output end of the first screw slide 2, and the opening and closing mechanism 4 is used to isolate and protect the tubular plastic film from dust in the workshop; The injection mechanism 5 is fixedly mounted on the inner side of the opening and closing mechanism 4, and the inner side of the injection mechanism 5 and the outer surface of the demoulding mechanism 3 form a hot melt plastic flow molding gap; A film pulling mechanism 6, which is fixedly mounted on the inner side of the opening and closing mechanism 4, and is used for pulling and guiding the tubular plastic film in the initial stage of forming; A calendering mechanism 7, which is fixedly mounted on the inner side of the opening and closing mechanism 4 near the film-drawing mechanism 6, and is used for calendering and guiding the tubular plastic film; The opening and closing mechanism 4 includes a protective half shell 41, the bottom of which is fixedly mounted on the output end of the first screw slide 2. There are two output ends of the first screw slide 2, and there are two protective half shells 41. An injection mold 42 is provided below the surface of one of the protective half shells 41. The opening and closing mechanism 4 also includes an air inlet pipe 43, which is fixedly mounted below the surface of the protective half shell 41, and an air outlet pipe 46 is fixedly connected above the surface of the protective half shell 41; a hollow motor 44 is fixedly connected to the inner side surface of one of the protective half shells 41, and a winding roller 45 is rotatably connected to the inner side surface of the other protective half shell 41, and refrigerators 47 are fixedly connected above the surfaces of the two protective half shells 41.

[0026] When in use, the first screw slide 2 is used to drive the two protective half shells 41 to be combined or separated. When the two protective half shells 41 are combined, one end of the winding roller 45 extends to the interior of the hollow motor 44. The end face of the winding roller 45 is made of magnetic material. The hollow motor 44 drives the winding roller 45 to rotate through magnetic action. The second screw slide 8 drives the hot melt device 9 to approach the injection mold 42. The output end of the hot melt device 9 extends to the inner side of the injection mold 42. The PE plastic particles are formed into a fluid by the extrusion and shearing action of the hot melt device 9 and are injected into the interior of the injection mold 42. The plastic particles are formed into a tubular protective film through the demolding mechanism 3 and the injection mechanism 5. The film pulling mechanism 6 pulls the tubular protective film through the calendering mechanism 7. The calendering mechanism 7 causes the tubular protective film to be calendered into a PE protective film. The PE protective film is guided to the winding roller 45. The rotation of the winding roller 45 causes the PE protective film to be rolled up. In this process, the closure of the two protective half shells 41 moving toward each other makes the PE protective film less susceptible to dust interference during molding.

[0027] Second embodiment: Figure 1-Figure 7 As shown, the outer surface of the hydraulic cylinder 31 is fixedly connected with a bracket 32, the top of the bracket 32 ​​is fixedly connected to the outer surface of the telescopic cylinder 33, there are two shearing knives 34, and the two shearing knives 34 are symmetrically installed on both sides of the telescopic cylinder 33; The demoulding mechanism 3 includes a hydraulic cylinder 31 and a telescopic cylinder 33. The output end of the hydraulic cylinder 31 is fixedly connected to a bent rod 35. The top end of the bent rod 35 is fixedly connected to a guide shell 36. The output end of the telescopic cylinder 33 is fixedly connected to a shearing knife 34. The injection mechanism 5 includes a fixing rod 51, one end of which is fixedly installed at a position below the surface of the protective half shell 41, one end of the fixing rod 51 away from the protective half shell 41 is fixedly connected to a drainage shell 52, a ventilation pipe 53 is fixedly connected to a position below the surface of the drainage shell 52, one end of the ventilation pipe 53 extends to the outside of the protective half shell 41, and one end of the ventilation pipe 53 away from the protective half shell 41 is fixedly connected to a semi-cylinder 54.

[0028] When in use, before the two protective half shells 41 are combined, the hydraulic cylinder 31 drives the bent rod 35 to move upward until the guide shell 36 is lifted to the position of the injection mold 42. Subsequently, the two protective half shells 41 are combined, and the injection mold 42 is combined with the two drainage shells 52. A cavity and a gap are formed between the two drainage shells 52 and the guide shell 36, and the hot melt plastic is injected into the interior of the injection mold 42 and then extruded into the interior of the cavity. When the protective film is wound, the existing device adopts an integral structure to form the protective film. The plastic inside the cavity is difficult to remove and is very easy to solidify. Injecting hot melt plastic using a multi-tube structure will aggravate the problem of difficulty in cleaning. In this device, the two drainage shells 52 are separated, and the solidified PE plastic is coated on the outer surface of the guide shell 36. The guide shell 36 moves down, and the telescopic cylinder 33 drives the shear knife 34 to cut the PE plastic, making it easier to clean the extrusion mold for the next use, solving the problem that when the film blowing equipment stops production, the raw materials of the extruder of the film blowing equipment are not cleaned and easily cause blockage.

[0029] The third embodiment: Figure 6 , Figure 8 As shown, the bottom of the protective half shell 41 is fixedly installed at the output end of the first screw slide 2, the output ends of the first screw slide 2 are two, the number of the protective half shells 41 is two, and an injection mold 42 is provided at the lower position of the surface of one of the protective half shells 41, and the opening and closing mechanism 4 also includes an air inlet pipe 43, the air inlet pipe 43 is fixedly installed at the lower position of the surface of the protective half shell 41, and an air outlet pipe 46 is fixedly connected to the upper position of the surface of the protective half shell 41; a hollow motor 44 is fixedly connected to the inner side surface of one of the protective half shells 41, and a winding roller 45 is rotatably connected to the inner side surface of the other protective half shell 41, and a refrigerator 47 is fixedly connected to the upper position of the surfaces of the two protective half shells 41; The film pulling mechanism 6 includes an annular guide rail 61, the surface of which is fixedly mounted on the inner side of the protective half shell 41, and the output end of the annular guide rail 61 is fixedly connected to a first linear guide rail 62. The film pulling mechanism 6 also includes a support block 63, the middle part of the surface of the support block 63 is fixedly mounted on the output end of the first linear guide rail 62, and a telescopic motor 64 is fixedly connected to the side of the support block 63 away from the first linear guide rail 62; A straight rod 65 is fixedly connected to the output end of the telescopic motor 64 , an end of the straight rod 65 away from the telescopic motor 64 is fixedly connected to an elastic ring 66 , and a sphere 67 is fixedly connected to the surface of the elastic ring 66 .

[0030] During use, the air inlet pipe 43 injects hot air into the interior of the protective half shell 41, and the air outlet pipe 46 guides the hot air out of the interior of the protective half shell 41. The tubular PE plastic film is not stable enough in the initial stage of molding, and heated air is needed to facilitate film drawing and calendering. When the PE plastic film is calendered, that is, when the PE plastic film moves to the refrigerator 47, the hot air is cooled, so that the hardness of the PE plastic film increases and it is not easy to adhere or tear. The P-shaped structure of the protective half shell 41 allows the air flow to flow inside it to promote the molding of the PE plastic film. In the initial stage of PE film molding, the two protective half shells 41 are in a closed state, and the annular guide rail 61 drives the elastic ring 66 to pull the top of the PE film, and the PE film is pulled upward, and the elastic ring 66 drives the PE film to move to the winding roller 45, and the hollow motor 44 drives the winding roller 45 to rotate. The winding roller 45 causes the PE film to be quickly pulled and wound, and the elastic ring 66 is separated from the PE film. In this process, there is no need to manually pull the initial PE film winding, and at the same time, the protection of the protective half shell 41 can effectively prevent dust from adhering to the surface of the PE film.

[0031] Fourth embodiment: Figure 7 , Figure 8 As shown, one end of the fixing rod 51 is fixedly installed at a position below the surface of the protective half shell 41, and one end of the fixing rod 51 away from the protective half shell 41 is fixedly connected to the drainage shell 52, and a ventilation pipe 53 is fixedly connected to the lower position of the surface of the drainage shell 52, and one end of the ventilation pipe 53 extends to the outside of the protective half shell 41, and one end of the ventilation pipe 53 away from the protective half shell 41 is fixedly connected to the semi-cylinder 54; The surface of the annular guide rail 61 is fixedly installed on the inner side surface of the protective half shell 41, and the output end of the annular guide rail 61 is fixedly connected to the first linear guide rail 62. The film pulling mechanism 6 also includes a support block 63. The middle position of the surface of the support block 63 is fixedly installed on the output end of the first linear guide rail 62. The side of the support block 63 away from the first linear guide rail 62 is fixedly connected to a telescopic motor 64. The output end of the telescopic motor 64 is fixedly connected to a straight rod 65. The end of the straight rod 65 away from the telescopic motor 64 is fixedly connected to an elastic ring 66, and the surface of the elastic ring 66 is fixedly connected to a sphere 67.

[0032] When in use, the two drainage shells 52 fit tightly together when the protective half shells 41 are combined, a gap is formed between the drainage shell 52 and the guide shell 36, the two semi-cylinders 54 are combined, and the bottom of the guide shell 36 is set higher than the top of the semi-cylinder 54, so as to prevent interference between the drainage shell 5 and the guide shell 36, and the hot melt plastic is filled into the cavity between the drainage shell 52 and the guide shell 36. The annular guide rail 61 drives the first linear guide rail 62 to move to the position just above the drainage shell 52, and the first linear guide rail 62 drives the support The block 63 moves downward, and the elastic ring 66 is driven to the top of the drainage shell 52. The hot melt plastic is in close contact with the elastic ring 66 and the sphere 67 to solidify. Then, the annular guide rail 61 drives the elastic ring 66 to move upward, and the vent pipe 53 introduces hot air into the interior of the semi-cylinder 54. The hot air goes upward to the interior of the PE plastic film, so that the PE film can be formed into a tubular plastic film. The hot air flowing inside the protective half shell 41 can effectively balance the wind pressure inside and outside the PE film, and prevent the wind pressure inside the PE film from being too large and shaking.

[0033] Fifth embodiment: Figure 8 , Fig. 9 As shown, the surface of the annular guide rail 61 is fixedly mounted on the inner side of the protective half shell 41, and the output end of the annular guide rail 61 is fixedly connected to the first linear guide rail 62. The film pulling mechanism 6 also includes a support block 63, and the middle position of the surface of the support block 63 is fixedly mounted on the output end of the first linear guide rail 62. The side of the support block 63 away from the first linear guide rail 62 is fixedly connected to a telescopic motor 64, and the output end of the telescopic motor 64 is fixedly connected to a straight rod 65, and the end of the straight rod 65 away from the telescopic motor 64 is fixedly connected to an elastic ring 66, and the surface of the elastic ring 66 is fixedly connected to a ball 67; The calendering mechanism 7 includes a second linear guide rail 71, the surface of which is fixedly installed on the upper position of the inner side of the protective half shell 41. There are two second linear guide rails 71, and the output ends of the two second linear guide rails 71 are respectively fixedly connected to a plate body 72 and an extension plate 73. The surfaces of the plate body 72 and the extension plate 73 are rotatably connected to guide rollers 74, and the bottom of the extension plate 73 is fixedly connected to a guide plate 75.

[0034] When in use, the annular guide rail 61 is used to drive the elastic ring 66 to move in an annular manner along the inner side surface of the protective half shell 41. The first linear guide rail 62 and the straight rod 65 are used to control the elastic ring 66 to move down a certain distance, so that the bottom of the elastic ring 66 can contact the gap between the drainage shell 52 and the drainage shell 36. The sphere 67 increases the connection tightness between the plastic and the elastic ring 66. The annular structure of the elastic ring 66 makes the wall thickness of the tubular plastic film more uniform when it is pulled upward. First, the retractability of the telescopic motor 64 enables the two protective half shells 41 to be combined or separated. Secondly, when the elastic ring 66 moves to the position below the guide roller 74, the second linear guide rail 71 drives the guide rollers 74 away from each other, and the telescopic motor 64 drives the elastic ring 66 to rotate. The elastic ring 66 drives the plastic film to pass through the guide roller 74. After the elastic ring 66 pulls the plastic film through, the plate body 72 and the extension plate 73 are combined to calender the plastic film, which solves the problem that manual operation is required when the film blowing equipment is started and loaded, causing dust to be easily adsorbed on the surface of the film.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. A dustproof PE protective film extrusion device, comprising a base (1), characterized in that: A first screw slide (2) is fixedly connected to the middle position of the top of the base (1), a second screw slide (8) is fixedly connected to the top of the base (1), and a hot melt device (9) is fixedly connected to the output end of the second screw slide (8), and further comprises: A demoulding mechanism (3), wherein the bottom of the demoulding mechanism (3) is fixedly mounted on the top of the first screw slide (2), and the demoulding mechanism (3) is used for guiding the extrusion of hot-melt PE plastic and for inflating the inside of the tubular plastic film; the demoulding mechanism (3) comprises a hydraulic cylinder (31) and a telescopic cylinder (33), the output end of the hydraulic cylinder (31) is fixedly connected to a bending rod (35), the top end of the bending rod (35) is fixedly connected to a guide shell (36), and the output end of the telescopic cylinder (33) is fixedly connected to a shearing knife (34); An opening and closing mechanism (4), the bottom of the opening and closing mechanism (4) being fixedly mounted on the output end of the first screw slide (2), and the opening and closing mechanism (4) being used for isolating and protecting the tubular plastic film from dust in the workshop; An injection mechanism (5), the injection mechanism (5) being fixedly mounted on the inner side surface of the opening and closing mechanism (4), the inner side surface of the injection mechanism (5) and the outer surface of the demoulding mechanism (3) forming a hot melt plastic flow molding gap; A film-pulling mechanism (6), the film-pulling mechanism (6) being fixedly mounted on the inner side surface of the opening and closing mechanism (4), the film-pulling mechanism (6) being used for pulling and guiding the tubular plastic film in the initial stage of forming; A calendering mechanism (7) is fixedly mounted on the inner side of the opening and closing mechanism (4) at a position close to the film-drawing mechanism (6), and is used for calendering and guiding the tubular plastic film.

2. The dustproof PE protective film extrusion equipment according to claim 1, characterized in that: The outer surface of the hydraulic cylinder (31) is fixedly connected to a bracket (32), the top of the bracket (32) is fixedly connected to the outer surface of the telescopic cylinder (33), and there are two shear knives (34), which are symmetrically mounted on both sides of the telescopic cylinder (33).

3. The dustproof PE protective film extrusion equipment according to claim 2, characterized in that: The opening and closing mechanism (4) comprises a protective half shell (41), the bottom of the protective half shell (41) being fixedly mounted on the output end of the first screw slide (2), the first screw slide (2) having two output ends, the number of the protective half shells (41) being two, and an injection mold (42) being provided below the surface of one of the protective half shells (41).

4. The dustproof PE protective film extrusion equipment according to claim 3 is characterized in that: The opening and closing mechanism (4) further comprises an air inlet pipe (43), wherein the air inlet pipe (43) is fixedly mounted at a position below the surface of the protective half shell (41), and an air outlet pipe (46) is fixedly connected at a position above the surface of the protective half shell (41).

5. The dustproof PE protective film extrusion equipment according to claim 4, characterized in that: The inner side surface of one of the protective half shells (41) is fixedly connected to a hollow motor (44), the inner side surface of the other protective half shell (41) is rotatably connected to a winding roller (45), and the upper positions of the surfaces of the two protective half shells (41) are fixedly connected to a refrigerator (47).

6. The dustproof PE protective film extrusion equipment according to claim 3, characterized in that: The injection mechanism (5) comprises a fixing rod (51), one end of the fixing rod (51) being fixedly mounted below the surface of the protective half shell (41), and one end of the fixing rod (51) away from the protective half shell (41) being fixedly connected to a drainage shell (52).

7. The dustproof PE protective film extrusion equipment according to claim 6, characterized in that: A ventilation pipe (53) is fixedly connected to a position below the surface of the drainage shell (52), one end of the ventilation pipe (53) extends to the outside of the protective half shell (41), and one end of the ventilation pipe (53) away from the protective half shell (41) is fixedly connected to a semi-cylinder (54).

8. The dustproof PE protective film extrusion equipment according to claim 3, characterized in that: The film pulling mechanism (6) comprises an annular guide rail (61), the surface of the annular guide rail (61) being fixedly mounted on the inner side surface of the protective half shell (41), and the output end of the annular guide rail (61) being fixedly connected to a first linear guide rail (62).

9. The dustproof PE protective film extrusion equipment according to claim 8, characterized in that: The film-pulling mechanism (6) further comprises a support block (63), the middle portion of the surface of the support block (63) being fixedly mounted on the output end of the first linear guide rail (62), and a telescopic motor (64) being fixedly connected to a side of the support block (63) away from the first linear guide rail (62).

10. The dustproof PE protective film extrusion equipment according to claim 9, characterized in that: The output end of the telescopic motor (64) is fixedly connected to a straight rod (65), one end of the straight rod (65) away from the telescopic motor (64) is fixedly connected to an elastic ring (66), and a sphere (67) is fixedly connected to the surface of the elastic ring (66).

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