Plastic film blow molding device

Abstract

The utility model relates to the field of plastic film processing, in particular to a plastic film blow molding device which comprises a square plate, a supporting rod is arranged at the top of the square plate in a penetrating mode, and the left end and the right end of the supporting rod are connected with a first fixing plate and a third fixing plate through bolts respectively. The protective shells, the guide rods, the hydraulic cylinder, the filter screen cover, the blowing fan, the refrigerator, the telescopic hose and the refrigeration box are matched, the beneficial effect of protecting a blown film is achieved, the hydraulic cylinder extends to push the protective shells to move, the two protective shells are attached together, the blown film cannot be exposed outside, the blowing fan blows air, and the blown film is not prone to falling off. The air is cooled through the refrigerator, and cold air can enter the protective shell through the telescopic hose and is blown out of the protective shell to cool a blow-molded film; and through cooperation of the extrusion rollers, the connecting plates, the electric telescopic rods, the connecting springs, the U-shaped plates, the stabilizing rods and the moving rods, the advantage of adjusting the extrusion force is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film processing, in particular to a plastic film blowing device. Background Art

[0002] Plastic film blow molding is a technology that adds plastic into an extruder, melts it, extrude the molten plastic, and blows it into a film through compressed air. This technology is widely used in the preparation of various types of plastic films, especially thermoplastics such as PE, PP, PVC, etc. Blown film has a variety of specifications and uses, and a blow molding device is required when blow molding plastic film.

[0003] After searching, the patent number is CN217704651U, and the name is a utility model of a blow molding device for a plastic film, including a frame. Through research and analysis, it is found that although the wind direction is deformed in the wind cavity before blowing out, making the wind output more uniform and thus ensuring the uniformity of the plastic film, it still has the following disadvantages to a certain extent.

[0004] For example, because it does not have the function of protecting the blown film during use, the surface of the film has not completely solidified when the film is just blown out. When the blown film is cooled, the film is exposed to the outside, which easily causes dust to be adsorbed on the surface of the film, affecting the quality of the film. In addition, it does not have the function of adjusting the extrusion force. Therefore, when the blown film is extruded, the extrusion force is easily too large, causing damage to the film, reducing the effect of film extrusion. In order to solve the above technical problems, we have designed a plastic film blowing device. Utility Model Content

[0005] The utility model aims to provide a plastic film blowing device, which has the advantages of protecting the blown film and adjusting the extrusion force, and solves the problems of not being able to protect the blown film and not being able to adjust the extrusion force.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic film blowing device, comprising a square plate, a support rod is arranged through the top of the square plate, the left and right ends of the support rod are respectively connected to a first fixed plate and a third fixed plate by bolts, the surfaces of the first fixed plate and the third fixed plate are respectively installed with a protective component and an extrusion component, a film blowing mechanism is arranged through the top of the square plate, a short rod is connected to the left side of the left support rod by bolts, the surface of the short rod is movably connected to a guide roller by a bearing, and the surface of the support rod is connected to the second fixed plate by bolts.

[0007] Preferably, the protective assembly includes a hydraulic cylinder, one side of the hydraulic cylinder is fixedly connected to the surface of the first fixed plate by bolts, the surface of the second fixed plate on the rear side is connected to a refrigeration box by bolts, the top of the refrigeration box is connected to a filter cover by bolts, an air blowing fan is penetrated through the top of the refrigeration box, refrigerators are penetrated on both sides of the refrigeration box, one end of the hydraulic cylinder is connected to a protective shell by bolts, and a guide rod is welded to the surface of the protective shell.

[0008] Preferably, one end of the guide rod away from the protective shell passes through one side of the first fixed plate, and the left and right sides of the refrigeration box are fixedly connected with telescopic hoses, and one end of the telescopic hose away from the refrigeration box is fixedly connected to the surface of the protective shell, and the inner cavity of the protective shell is provided with an air outlet.

[0009] Preferably, the extrusion assembly includes an electric telescopic rod, one end of which passes through the surface of the third fixed plate, one end of which is connected to a connecting plate by bolts, a movable rod is provided passing through the surface of the connecting plate, and one end of the movable rod away from the connecting plate is connected to a U-shaped plate by bolts.

[0010] Preferably, stabilizing rods are welded to the front and rear sides of the U-shaped plate and the connecting plate, a connecting spring is movably sleeved on the surface of the movable rod, both ends of the connecting spring are respectively welded to one side of the connecting plate and the surface of the U-shaped plate, and the inner cavity of the U-shaped plate is movably connected to an extrusion roller via a bearing.

[0011] Preferably, a movable hole is opened on the surface of the second fixed plate, the left side of the left support rod is connected to a long plate by bolts, the surface of the long plate is movably connected to a connecting roller by a bearing, and the bottom end of the support rod is connected to a bottom plate by bolts.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model has the advantage of protecting the blown film by cooperating with a protective shell, a guide rod, a hydraulic cylinder, a filter screen, an air blowing fan, a refrigerator, a telescopic hose and a refrigeration box. The hydraulic cylinder extends to push the protective shell to move, so that the two protective shells are fitted together, so that the blown film will not be exposed to the outside. The air blowing fan blows air, and the air is cooled by the refrigerator. The cold air can enter the protective shell through the telescopic hose, and the protective shell is blown out to cool the blown film. The film can be completely cooled after passing through the protective shell, so that the external air dust will not be adsorbed on the unsolidified film surface, thereby improving the film output quality.

[0014] 2. The utility model has the advantage of adjusting the extrusion force by cooperating with the extrusion roller, the connecting plate, the electric telescopic rod, the connecting spring, the U-shaped plate, the stabilizing rod and the moving rod. The connecting plate is pushed to move by the electric telescopic rod, and the U-shaped plate drives the extrusion roller to move, so that the extrusion roller is adjusted to a suitable position. When the film is extruded by the extrusion roller, under the action of the connecting spring, the extrusion roller not only squeezes the film, but also ensures that the pressure of the extrusion roller will not be too large, thereby improving the extrusion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a partial left-side stereoscopic structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the partial explosion three-dimensional structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the extrusion component of the utility model.

[0019] In the figure: 1. square plate; 2. film blowing mechanism; 3. protection component; 301. protective shell; 302. guide rod; 303. hydraulic cylinder; 304. filter screen; 305. air blowing fan; 306. refrigerator; 307. telescopic hose; 308. refrigerator; 4. support rod; 5. first fixed plate; 6. long plate; 7. connecting roller; 8. extrusion component; 801. extrusion roller; 802. connecting plate; 803. electric telescopic rod; 804. connecting spring; 805. U-shaped plate; 806. stabilizing rod; 807. moving rod; 9. second fixed plate; 10. guide roller; 11. short rod; 12. bottom plate; 13. third fixed plate. DETAILED DESCRIPTION

[0020] See also Figure 1-Figure 4 A plastic film blowing device comprises a square plate 1, a support rod 4 is provided through the top of the square plate 1, the left and right ends of the support rod 4 are respectively connected with a first fixing plate 5 and a third fixing plate 13 by bolts, the surfaces of the first fixing plate 5 and the third fixing plate 13 are respectively installed with a protection component 3 and an extrusion component 8, a film blowing mechanism 2 is provided through the top of the square plate 1, a short rod 11 is connected with the left side of the support rod 4 by bolts, a guide roller 10 is movably connected with the surface of the short rod 11 by a bearing, and a second fixing plate 9 is connected with the surface of the support rod 4 by bolts;

[0021] See also Figure 1 , Figure 2 and Figure 3The protection component 3 includes a hydraulic cylinder 303, one side of which is fixedly connected to the surface of the first fixing plate 5 by bolts, the surface of the second fixing plate 9 at the rear side is connected to a refrigeration box 308 by bolts, the top of the refrigeration box 308 is connected to a filter screen cover 304 by bolts, the top of the refrigeration box 308 is penetrated by an air blowing fan 305, and the left and right sides of the refrigeration box 308 are penetrated by refrigerators 306, one end of the hydraulic cylinder 303 is connected to a protective shell 301 by bolts, and a guide rod 302 is welded on the surface of the protective shell 301. By setting the filter screen cover 304, dust in the air can be filtered. After the air blowing fan 305 blows air into the refrigeration box 308, dust will not enter the refrigeration box 308, thereby ensuring the cleanliness of the air;

[0022] See also Figure 1 , Figure 2 and Figure 3 , one end of the guide rod 302 away from the protective shell 301 penetrates to one side of the first fixed plate 5, and the left and right sides of the refrigeration box 308 are fixedly connected with a telescopic hose 307, and one end of the telescopic hose 307 away from the refrigeration box 308 is fixedly connected to the surface of the protective shell 301, and the inner cavity of the protective shell 301 is provided with an air outlet. By setting the guide rod 302, the protective shell 301 can be supported and guided, thereby ensuring the stability of the protective shell 301 when moving;

[0023] See also Figure 1 and Figure 4 The extrusion assembly 8 includes an electric telescopic rod 803, one end of which passes through the surface of the third fixed plate 13, one end of which is connected to the connecting plate 802 by bolts, and a moving rod 807 is provided on the surface of the connecting plate 802, and one end of the moving rod 807 away from the connecting plate 802 is connected to the U-shaped plate 805 by bolts. By providing the moving rod 807, the U-shaped plate 805 can be supported so that the U-shaped plate 805 will not shake up and down;

[0024] See also Figure 1 and Figure 4 The U-shaped plate 805 and the front and rear sides of the connecting plate 802 are welded with stabilizing rods 806, and the surface of the moving rod 807 is movably sleeved with a connecting spring 804. The two ends of the connecting spring 804 are respectively welded to one side of the connecting plate 802 and the surface of the U-shaped plate 805. The inner cavity of the U-shaped plate 805 is movably connected with an extrusion roller 801 through a bearing. By setting the stabilizing rod 806, the connecting plate 802 and the U-shaped plate 805 can be supported, so that the connecting plate 802 and the U-shaped plate 805 can move more stably.

[0025] See also Figure 1A movable hole is opened on the surface of the second fixed plate 9, the left side of the left support rod 4 is connected to the long plate 6 by bolts, the surface of the long plate 6 is movably connected to the connecting roller 7 by a bearing, and the bottom end of the support rod 4 is connected to the bottom plate 12 by bolts.

[0026] When in use, an external controller and a power supply are connected to the extruder and the film blowing mechanism 2. When the extruder is running, the molten material can be squeezed into the film blowing mechanism 2, and the blown film is pulled upward through the extrusion rollers 801, and then passed through the top of the guide roller 10 and between the connecting rollers 7, and finally wound on the winding device. The hydraulic cylinder 303 extends and pushes the protective shell 301 to move, so that the protective shell 301 can contact, thereby protecting the blown film. At the same time, the blowing fan 305 is running to blow air into the refrigeration box 308, and the blown air is cooled by the refrigerator 306. The cooled air is injected into the cooling box through the telescopic hose 307. The protective shell 301 is blown out through the air outlet, so that the film passing through the protective shell 301 can be cooled quickly, preventing dust from being adsorbed on the surface of the film before the film is solidified, thereby improving the quality of the blown film. At the same time, the electric telescopic rod 803 extends to push the connecting plate 802 to move, so that the U-shaped plate 805 can drive the squeezing roller 801 to move, thereby adjusting the squeezing roller 801 to a suitable position, allowing the squeezing roller 801 to extrude the film. When the squeezing roller 801 extrude the film, under the action of the connecting spring 804, it can effectively prevent the pressure of the squeezing roller 801 from damaging the film, thereby improving the squeezing effect.

[0027] To sum up: the plastic film blowing device, through the cooperation of the square plate 1, the film blowing mechanism 2, the protective component 3, the support rod 4, the first fixed plate 5, the long plate 6, the connecting roller 7, the extrusion component 8, the second fixed plate 9 and the third fixed plate 13, solves the problems of lack of protection for the blown film and lack of adjustment of the extrusion force.

Claims

1. A plastic film blowing device, comprising a square plate (1), characterized in that: A support rod (4) is provided through the top of the square plate (1), and the left and right ends of the support rod (4) are respectively connected to a first fixing plate (5) and a third fixing plate (13) by bolts, and the surfaces of the first fixing plate (5) and the third fixing plate (13) are respectively installed with a protection component (3) and an extrusion component (8), and a film blowing mechanism (2) is provided through the top of the square plate (1), and the left side of the left support rod (4) is connected to a short rod (11) by bolts, and the surface of the short rod (11) is movably connected to a guide roller (10) by a bearing, and the surface of the support rod (4) is connected to a second fixing plate (9) by bolts.

2. A plastic film blowing device according to claim 1, characterized in that: The protection component (3) comprises a hydraulic cylinder (303), one side of the hydraulic cylinder (303) is fixedly connected to the surface of the first fixing plate (5) by bolts, the surface of the second fixing plate (9) at the rear side is connected to a refrigeration box (308) by bolts, the top of the refrigeration box (308) is connected to a filter screen cover (304) by bolts, the top of the refrigeration box (308) is penetrated by an air blowing fan (305), the left and right sides of the refrigeration box (308) are penetrated by refrigerators (306), one end of the hydraulic cylinder (303) is connected to a protection shell (301) by bolts, and a guide rod (302) is welded to the surface of the protection shell (301).

3. A plastic film blowing device according to claim 2, characterized in that: One end of the guide rod (302) away from the protective shell (301) passes through one side of the first fixed plate (5); the left and right sides of the refrigeration box (308) are fixedly connected with telescopic hoses (307); one end of the telescopic hose (307) away from the refrigeration box (308) is fixedly connected with the surface of the protective shell (301); and an air outlet is provided in the inner cavity of the protective shell (301).

4. A plastic film blowing device according to claim 1, characterized in that: The extrusion assembly (8) comprises an electric telescopic rod (803), one end of the electric telescopic rod (803) passes through the surface of the third fixed plate (13), one end of the electric telescopic rod (803) is connected to a connecting plate (802) via a bolt, a moving rod (807) is provided passing through the surface of the connecting plate (802), and one end of the moving rod (807) away from the connecting plate (802) is connected to a U-shaped plate (805) via a bolt.

5. A plastic film blowing device according to claim 4, characterized in that: Stabilizing rods (806) are welded to the front and rear sides of the U-shaped plate (805) and the connecting plate (802); a connecting spring (804) is movably sleeved on the surface of the moving rod (807); two ends of the connecting spring (804) are respectively welded to one side of the connecting plate (802) and the surface of the U-shaped plate (805); and an extrusion roller (801) is movably connected to the inner cavity of the U-shaped plate (805) via a bearing.

6. A plastic film blowing device according to claim 1, characterized in that: A movable hole is provided on the surface of the second fixed plate (9); the left side of the left support rod (4) is connected to a long plate (6) via bolts; the surface of the long plate (6) is movably connected to a connecting roller (7) via a bearing; and the bottom end of the support rod (4) is connected to a bottom plate (12) via bolts.

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