Film blowing equipment with uniform thickness adjusting function

Abstract

The utility model discloses film blowing equipment with a uniform thickness adjusting function, which comprises a film blowing equipment main body, an extruder and a film blowing machine die head which are connected with each other are arranged on the film blowing equipment main body, a screw rod is arranged in the extruder, a feeding tank is arranged at the upper end of the extruder, a die head central rod is arranged in the film blowing machine die head, and a screw rod is arranged in the die head central rod. A modular temperature control mechanism is further installed outside the film blowing machine die head, a positioning frame is arranged on the film blowing equipment body, a traction roller, a guide roller and a winding roller are further rotationally installed on the positioning frame, and a protective cover plate covers the positioning frame. According to the film blowing equipment with the uniform thickness adjusting function, the infrared thickness gauges are arranged at different heights of the side face of the film blowing area correspondingly, the film thickness can be detected, the film blowing thickness can be adjusted by accurately controlling the temperature of the modular temperature control mechanism, adjustment of the direct contact part with film bubbles is reduced, and the film blowing efficiency is improved. And uniform film blowing thickness is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a film blowing equipment technical field, specifically is a film blowing equipment with even thickness adjusting function. BACKGROUND

[0002] Film blowing equipment is the main mechanical equipment for producing various plastic films, and is widely used in food packaging, commodity packaging, industrial packaging and many other fields. The basic working principle of film blowing equipment is to melt plastic raw materials by heating, then extrude through an annular die head to form a continuous tubular film bubble, then cool and shape, and finally become finished film through traction and winding.

[0003] The existing film blowing equipment can adjust the film blowing thickness through feeding adjustment, temperature control, die gap adjustment, traction speed control and cooling strength adjustment, but in the production process, different control methods may affect the size of the product. For example, using the feeding adjustment method will increase or decrease the size of the film bubble, leading to production quality problems. Although adjusting the die gap can more accurately control the thickness, adjusting the die gap usually requires stopping the machine, which is complex and inconvenient. At the same time, adjusting the part directly contacting the film bubble will produce some waste, causing waste. SUMMARY

[0004] The utility model aims at providing a film blowing equipment with even thickness adjusting function to solve the problem that the film blowing equipment on the market currently uses the feeding adjustment method, which increases or decreases the size of the film bubble, leading to production quality problems. Although adjusting the die gap can more accurately control the thickness, adjusting the die gap usually requires stopping the machine, which is complex and inconvenient. At the same time, adjusting the part directly contacting the film bubble will produce some waste, causing waste.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a film blowing equipment with even thickness adjusting function, comprising a film blowing equipment main body, an extruder and a film blowing machine die head connected to each other are arranged on the film blowing equipment main body, a screw rod is installed in the extruder, an inlet tank is arranged on the upper end of the extruder, a die head center rod is installed in the film blowing machine die head, a modular temperature control mechanism is further installed outside the film blowing machine die head, a positioning frame is arranged on the film blowing equipment main body, traction rollers, guide rollers and winding rollers are further rotatably installed on the positioning frame, a protective cover plate is arranged outside the positioning frame, the film blowing machine die head is located inside the protective cover plate, film blowing limiting rollers are uniformly and interval ly arranged above the film blowing machine die head, and infrared thickness gauges are respectively installed above film blowing limiting rollers of different heights.

[0006] Preferably, the cooling pipe column is inserted and mounted in the middle of the upper end of the film blowing machine die head, and the upper end of the cooling pipe column is close to the below of the traction roller.

[0007] Preferably, the infrared thickness gauge is towards the cooling pipe column, and the highest end of the cooling pipe column is higher than the uppermost infrared thickness gauge.

[0008] Preferably, the film blowing machine die head is further provided with a polygon positioning frame, the film blowing limiting roller is rotatably mounted on the polygon positioning frame through a rotating shaft, and the polygon positioning frame is welded on the positioning frame.

[0009] Preferably, the protective cover plate is further provided with a cooling chamber inside, and the cooling chamber is on the side of the film blowing machine die head.

[0010] Preferably, the modular temperature control mechanisms are connected to form a circular structure by splicing, and the inner sides of the modular temperature control mechanisms are closely attached to the outside of the film blowing machine die head.

[0011] Compared with the prior art, the film blowing equipment with uniform thickness adjusting function has the following beneficial effects: the infrared thickness gauges are arranged at different heights on the side of the film blowing area, the film thickness can be detected and processed, the temperature of the modular temperature control mechanism can be accurately controlled to adjust and process the film blowing thickness, the adjustment of the part directly contacted with the bubble is reduced, and the film blowing thickness is uniform. The film blowing equipment with uniform thickness adjusting function is provided with the modular temperature control mechanism on the film blowing machine die head, is easy to disassemble and maintain, is externally provided with the dust cover, can avoid impurities from entering the production area, improves the temperature control and cooling strength, and achieves the purpose of energy saving. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a structural schematic view of the film blowing equipment with uniform thickness adjusting function.

[0013] Fig. 2 It is a film blowing machine die head plan view of the film blowing equipment with uniform thickness adjusting function.

[0014] Fig. 3 It is an infrared thickness gauge installation position structural schematic view of the film blowing equipment with uniform thickness adjusting function.

[0015] In the figure: 1, film blowing equipment main body; 2, feeding tank; 3, extruder; 4, screw; 5, film blowing machine die head; 501, modular temperature control mechanism; 502, die head center rod; 6, cooling chamber; 7, winding roller; 8, traction roller; 9, positioning frame; 10, guide roller; 11, film blowing limiting roller; 1101, polygon positioning frame; 12, protective cover plate; 13, infrared thickness gauge; 14, cooling pipe column. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0017] Please refer to Figs. 1-3The utility model provides a kind of technical scheme: a kind of blown film equipment with uniform thickness adjusting function, including blown film equipment main body 1, blown film equipment main body 1 is equipped with the extruder 3 and blown film machine die 5 of interconnection, and extruder 3 is installed with screw 4, and extruder 3 upper end is equipped with feed tank 2, feed tank 2 is used for material to enter extruder 3, and extruder 3 passes through heating structure time material melts, then by screw 4 extrusion enters blown film machine die 5, blown film machine die 5 inside is installed with die center rod 502, and blown film machine die 5 outside is also installed with modular temperature control mechanism 501, by accurately control the temperature condition at blown film machine die 5, can effectively control melt cooling speed, to avoid the influence uniformity of film thickness, only by temperature adjustment, can effectively avoid the stoppage problem caused by blown film machine die 5 adjustment, simultaneously prevent the problem of waste material caused by improper adjustment of traction roller 8, adjust the part not directly contacted with bubble, effectively avoid the generation of defective product, blown film equipment main body 1 is equipped with positioning frame 9, blown film machine die 5 top is also equipped with polygon positioning frame 1101, and blown film limiting cylinder 11 is rotatably installed on polygon positioning frame 1101 by shaft, and polygon positioning frame 1101 is welded on positioning frame 9, this structure is fixed by polygon positioning frame 1101 to blown film limiting cylinder 11 Process, can make blown film limiting cylinder 11 outside limiting treatment to bubble, and positioning frame 9 is also rotatably installed with traction roller 8, guide roller 10 and winding roller 7, traction roller 8 is clamped to the film by power structure and is pulled, guide roller 10 is flattened and is guided to the bubble and is conveyed, winding roller 7 can be wound up after cooling The film, and the outer cover of positioning frame 9 is provided with protective cover plate 12, protective cover plate 12 covers blown film and cooling area, can avoid impurities into blown film area, while ensuring that blown film equipment main body 1 is reliably positioned, blown film machine die 5 is inside protective cover plate 12, protective cover plate 12 is also equipped with cooling chamber 6 inside, and cooling chamber 6 is at the side of blown film machine die 5, this structure can further cool the film in transmission by cooling chamber 6 and is shaped, while the influence of cooling chamber 6 on the part of blown film machine die 5 heating can be reduced, modular temperature control mechanism 501 is formed into circular structure by splicing, and the inside of modular temperature control mechanism 501 is closely attached to the outside of blown film machine die 5, this structure can adjust the temperature of each place respectively by the setting of modular temperature control mechanism 501, ensure that the temperature is consistent, so as to carry out uniform thickness adjusting treatment, and blown film limiting cylinder 11 is uniformly and spaced apart above blown film machine die 5, and infrared thickness gauge 13 is respectively installed above blown film limiting cylinder 11 of different height, infrared thickness gauge 13 is towards cooling pipe column 14, and the highest end of cooling pipe column 14 is higher than the uppermost infrared thickness gauge 13, this structure ensures that infrared thickness gauge 13 measures the film thickness of the same part at different heights when installing and positioning infrared thickness gauge 13 by cooling pipe column 14, by monitoring the change of film thickness, ensure that blown film is carried out normally,At the same time, the cooling pipe column 14 can also block the interference of the infrared thickness gauge 13 during measurement.

[0018] Working principle: when using the film blowing equipment with uniform thickness adjusting function, first, the plastic raw material enters the extruder 3 through the feeding tank 2, the raw material is melted under the action of the heating structure, and the melted material is extruded into the film blowing machine die 5 under the driving action of the speed reducer motor through the screw rod 4, the film blowing machine die 5 is blown by high-pressure gas, the film bubble is blown out from the air ring formed by the outer ring of the die center rod 502, the modular temperature control mechanism 501 controls the temperature of different areas of the film blowing machine die 5 respectively, ensures that the cooling effect of the film bubble is consistent, then the film bubble is guided by the film blowing limiting roller 11, flattened by the guide roller 10, and pulled by the traction roller 8, under the condition that the traction speed of the traction roller 8 is certain, the cooling speed of the film bubble is controlled by adjusting the temperature of the modular temperature control mechanism 501, that is, the thickness of the film blowing is controlled, the infrared thickness gauge 13 measures the thickness of the same part at different heights, so as to adjust the temperature in time, if the thickness measured by the lower infrared thickness gauge 13 is too large, the temperature of the modular temperature control mechanism 501 is reduced, if the thickness measured by the lower infrared thickness gauge 13 is too low, the temperature of the modular temperature control mechanism 501 is increased, the thickness measured by the upper infrared thickness gauge 13 remains the same, the cooling pipe column 14 guides the cooling gas directly to the area of the traction roller 8 to further cool the traction part, the polygon positioning frame 1101 reliably positions the film blowing limiting roller 11 through the positioning frame 9, and the protective cover plate 12 is used for dustproof treatment during film blowing and cooling, then the film is guided by the guide roller 10 and wound on the winding roller 7, and is cooled and shaped in the cooling chamber 6 during winding transmission, realizing the uniform control of the film blowing thickness of the film blowing equipment main body 1, thereby completing a series of work.

[0019] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A film blowing apparatus having a uniform thickness adjustment function, comprising a film blowing apparatus main body (1), characterized in that: The film blowing equipment body (1) is provided with an extruder (3) and a film blowing die head (5) connected with each other, a screw (4) is installed in the extruder (3), a feeding tank (2) is arranged at the upper end of the extruder (3), a die head center rod (502) is installed in the film blowing die head (5), and a modular temperature control mechanism (501) is further installed outside the film blowing die head (5), a positioning frame (9) is arranged on the film blowing equipment body (1), a traction roller (8), a guide roller (10) and a winding roller (7) are further rotatably installed on the positioning frame (9), a protective cover plate (12) is arranged outside the positioning frame (9), the film blowing die head (5) is located inside the protective cover plate (12), film blowing limiting rollers (11) are uniformly and interval ly arranged above the film blowing die head (5), and infrared thickness gauges (13) are respectively installed above film blowing limiting rollers (11) of different heights.

2. The film blowing apparatus having a uniform thickness adjustment function according to claim 1, wherein: The cooling pipe column (14) is inserted and installed in the middle of the upper end of the film blowing die head (5), and the upper end of the cooling pipe column (14) is close to the lower side of the traction roller (8).

3. The film blowing apparatus having a uniform thickness adjustment function according to claim 2, wherein: The infrared thickness gauge (13) faces the cooling pipe column (14), and the highest end of the cooling pipe column (14) is higher than the uppermost infrared thickness gauge (13).

4. The film blowing apparatus having a uniform thickness adjustment function according to claim 1, wherein: The film blowing die head (5) is further provided with a polygon positioning frame (1101), the film blowing limiting rollers (11) are rotatably installed on the polygon positioning frame (1101) through shafts, and the polygon positioning frame (1101) is welded on the positioning frame (9).

5. The film blowing apparatus having a uniform thickness adjustment function according to claim 1, wherein: The protective cover plate (12) is further provided with a cooling chamber (6) inside, and the cooling chamber (6) is located at the side of the film blowing die head (5).

6. The film blowing apparatus having a uniform thickness adjustment function according to claim 1, wherein: The modular temperature control mechanisms (501) are connected in a ring structure by splicing, and the inner sides of the modular temperature control mechanisms (501) are closely attached to the outside of the film blowing die head (5).

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