Heavy-load packaging bag film blowing machine
By introducing negative and positive pressure duct systems into the blown film machine, combined with heat exchangers and buffer tanks, the problem of insufficient airflow circulation was solved, achieving uniform cooling of the film and reducing waste gas, thus improving the forming quality.
Patent Information
- Application Number
- CN202520027288.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing blown film machines have poor airflow circulation during film inflation, resulting in insufficient internal cooling and plasticity, as well as serious leakage of organic waste gas.
By adopting a reasonable arrangement of negative pressure and positive pressure air ducts, combined with heat exchangers and buffer tanks, airflow recycling and temperature control are achieved. Airflow is regulated by air pressure sensors and flow control valves to reduce exhaust gas leakage.
It improves film cooling efficiency, reduces organic waste gas leakage, and ensures uniform film cooling and forming quality.
Smart Images
Figure CN223812327U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of heavy load packaging bag manufacturing equipment technical field, specifically a kind of film blowing machine for heavy load packaging bag manufacturing. BACKGROUND
[0002] FFS heavy packaging film, full name Form-Fill-Seal (Form-Fill-Seal) heavy packaging film, is a kind of high-performance packaging material, widely used in multiple industries, its main features include one-time forming, good moisture-proof sealing, easy to stack, etc., especially suitable for the automated packaging of solid products.
[0003] POF film blowing machine is a kind of mechanical equipment mainly melting plastic particles by heating and then blowing into film, the film produced and manufactured has high transparency and gloss, strong sealing, good shrinkage, excellent barrier property, environmental protection and non-toxic, has the advantages of fresh-keeping, moisture-proof, anti-freezing and moisture-proof, etc., the film is conveyed to herringbone clamp plate by blowing traction system, the herringbone clamp plate integrates the film into a specified width and thickness, airflow needs to be blown into the film during the blowing traction process to make the film expand, the internal airflow circulation effect is poor, which affects the internal cooling plasticity, the film blowing machine generates organic waste gas during work, and the herringbone clamp plate causes a large amount of leakage of organic waste gas during film integration, therefore, the prior art is technically improved to enable effective airflow circulation during the internal blowing process, improve the internal cooling plasticity of the film and reduce the leakage of organic waste gas. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of heavy load packaging bag film blowing machine to solve the problems raised in the above background.
[0005] To achieve the above object, the utility model provides the following technical scheme:
[0006] Heavy load packaging bag film blowing machine, including equipment frame, herringbone clamp plate, machine head, extruder and wind ring cooling and blowing traction system, equipment frame is provided with herringbone clamp plate, machine head, extruder and wind ring cooling, the machine head includes die holder, die sleeve, die core, negative pressure air pipe, positive pressure air pipe, extrusion pipe, die sleeve is arranged in die holder, die core is fixedly installed in die sleeve, there is gap for extrusion between die sleeve and die core, negative pressure air pipe and positive pressure air pipe are arranged in die core, air pressure is blown into from negative pressure air pipe by positive pressure air pipe, extrusion chamber is arranged at the bottom of die core in the inside of die sleeve, extrusion pipe is communicated with extrusion chamber, the other end of extrusion pipe is communicated with extruder.
[0007] As a further scheme of the utility model: the blow-drawing system includes a control cabinet, a heat exchanger and a buffer tank, the positive pressure air pipe is communicated with the output end of the heat exchanger through a positive pressure pipeline, the output end of the negative pressure air pipe is communicated with the fan through a negative pressure pipeline, the buffer tank is connected between the fan and the heat exchanger through a pipeline, and the control cabinet controls the heat exchange temperature of the heat exchanger and the air flow of the positive pressure air pipe and the air flow of the negative pressure air pipe.
[0008] As a further scheme of the utility model: the negative pressure air pipe penetrates from the middle of the positive pressure air pipe and extends upwards to the inside of the herringbone splint, and the air flow output end of the positive pressure air pipe and the negative pressure air pipe have a gap for blowing air flow.
[0009] As a further scheme of the utility model: air pressure sensors are arranged on the negative pressure air pipe at equal intervals, the air pressure sensors are electrically connected with the control cabinet, and the air flow of the positive pressure air pipe and the air flow of the negative pressure air pipe are controlled according to the detection value of the air pressure sensors.
[0010] As a further scheme of the utility model: air flow control valves are arranged on the positive pressure pipeline and the negative pressure pipeline.
[0011] Compared with the prior art, the utility model has the beneficial effects that:
[0012] The heavy-duty packaging bag film blowing machine can control the air flow distribution in the blow-drawing process, recycle the top air flow, and recycle the top air flow through heat exchange and cooling, so that the film cooling efficiency and the cooling time can be controlled, the influence of the workshop temperature can be avoided, the waste gas leakage can be reduced, and the air pressure in the film can be controlled. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 It is a structural schematic view of a heavy-duty packaging bag film blowing machine;
[0014] Fig. 2 It is a structural front view of a heavy-duty packaging bag film blowing machine;
[0015] Fig. 3 It is a structural schematic view of a heavy-duty packaging bag film blowing machine head;
[0016] Fig. 4 It is an exploded view of a heavy-duty packaging bag film blowing machine head;
[0017] Fig. 5 It is a structural schematic view of a blow-drawing system of a heavy-duty packaging bag film blowing machine.
[0018] In the figure: 1, equipment rack; 2, herringbone clamp plate; 3, machine head; 301, die holder; 302, die sleeve; 303, die core; 304, negative pressure air pipe; 305, positive pressure pipeline; 306, positive pressure air pipe; 307, negative pressure pipeline; 308, extruded pipe; 309, extrusion chamber; 310, gap; 4, control cabinet; 5, heat exchanger; 6, extruder; 7, air ring cooling; 8, air pressure sensor; 9, fan. DETAILED DESCRIPTION
[0019] Please refer to Figs. 1-5 In the embodiment of the utility model, the heavy-duty packaging bag blowing machine, including equipment rack 1, herringbone clamp plate 2, machine head 3, extruder 6 and air ring cooling 7 and blowing traction system, equipment rack 1 is provided with herringbone clamp plate 2, machine head 3, extruder 6 and air ring cooling 7, machine head 3 includes die holder 301, die sleeve 302, die core 303, negative pressure air pipe 304, positive pressure air pipe 306, extruded pipe 308, die sleeve 302 is set in die holder 301, die sleeve 302 is fixedly installed with die core 303 in, die sleeve 302 and die core 303 between the gap 310 for extruding, die core 303 is provided with negative pressure air pipe 304 and positive pressure air pipe 306, air pressure is blown into from negative pressure air pipe 304 by positive pressure air pipe 306, the inside of die sleeve 302 is provided with the extrusion chamber 309 of the bottom of die core 303, extruded pipe 308 communicates with extrusion chamber 309, another end of extruded pipe 308 communicates with extruder 6, and extruder 6 pushes the dry polyethylene particle and moves, and the particles rub and collide with each other, and the barrel is gradually melted by heating outside, is extruded by machine head 3, and air flow is blown out by positive pressure air pipe 306, and is moved and blown film by cooperating air ring cooling 7, and the film is integrated in the process of entering herringbone clamp plate 2, and air flow is recycled by negative pressure air pipe 304, and air flow is sent into buffer tank and then is regulated and exchanged by heat exchanger 5, air flow temperature is reduced, and air flow is blown out again, so as to repeat, realize the purpose of air flow circulation, not only can reduce air flow leakage by controlling air flow, but also can reduce air flow temperature by internal circulation, improve film cooling plasticity efficiency, and achieve the effect of cooling.
[0020] In a preferred embodiment, the inflation traction system comprises a control cabinet 4, a heat exchanger 5 and a buffer tank, the positive pressure air pipe 306 is communicated with the output end of the heat exchanger 5 through the positive pressure pipeline 305, the output end of the negative pressure air pipe 304 is communicated with the fan 9 through the negative pressure pipeline 307, the buffer tank is connected between the fan 9 and the heat exchanger 5 through the pipeline, the control cabinet 4 controls the heat exchange temperature of the heat exchanger 5 and the air flow of the positive pressure air pipe 306 and the air flow of the negative pressure air pipe 304, the air flow changes in density after being heated, which has an impact on air pressure, so the air pressure is buffered and adjusted through the buffer tank, the air flow can also be temporarily stored, the air flow is adjusted, the part of the air flow is internally circulated, a pipeline capable of sending gas to a waste gas treatment process can be connected to the buffer tank, an air inlet pipeline for supplementing air is connected between the buffer tank and the heat exchanger, and new gas is supplemented after a period of circulation.
[0021] In a preferred embodiment, the negative pressure air pipe 304 penetrates from the middle of the positive pressure air pipe 306 and extends upward to the inside of the herringbone splint 2, and the air flow output end of the positive pressure air pipe 306 and the negative pressure air pipe 304 have a gap for blowing air flow, and the air outlet of the positive pressure air pipe 306 surrounding the outside of the negative pressure air pipe 304 can effectively improve the uniformity of the air flow when blowing, avoid the air flow blowing directly to one side of the film, and cause the film to deform and blow unevenly.
[0022] In a preferred embodiment, the negative pressure air pipe 304 is provided with equidistantly distributed air pressure sensors 8, the air pressure sensors 8 are electrically connected with the control cabinet 4, the air flow of the positive pressure air pipe 306 and the air flow of the negative pressure air pipe 304 are controlled according to the detection value of the air pressure sensors 8, the air pressure sensors 8 monitor the air pressure at each stage of the inflation process, the pressure of the top air flow is controlled by controlling the operating power of the negative pressure air pipe 304 and the fan 9, and the inflation gas is recovered.
[0023] In a preferred embodiment, the positive pressure pipeline 305 and the negative pressure pipeline 307 are both provided with air flow control valves, the control cabinet 4 controls the opening degree of the air flow control valves, so as to control the air flow and achieve the purpose of controlling the air intake and exhaust, and the control cabinet 4 controls the opening degree of the air flow control valves through the detection value of the air pressure sensors 8.
[0024] It should be noted that the above embodiments all belong to the same utility model concept, the description of each embodiment has its own emphasis, and the description not fully described in individual embodiments can be referred to the description in other embodiments.
[0025] The above-described embodiments only express the implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as the limitation of the scope of the present application patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.
Claims
1. A heavy-duty blown film extrusion machine for packaging bags, comprising a frame (1), a herringbone clamp (2), a die head (3), an extruder (6), an air ring cooling system (7), and a blown film traction system, wherein the frame (1) is equipped with the herringbone clamp (2), the die head (3), the extruder (6), and the air ring cooling system (7), characterized in that, The extruder head (3) includes a mold frame (301), a mold sleeve (302), a mold core (303), a negative pressure air duct (304), a positive pressure air duct (306), and an extrusion pipe (308). The mold sleeve (302) is set inside the mold frame (301). The mold core (303) is fixedly installed inside the mold sleeve (302). There is a gap (310) between the mold sleeve (302) and the mold core (303) for extrusion. The negative pressure air duct (304) and the positive pressure air duct (306) are provided inside the mold core (303). Air pressure is blown in through the positive pressure air duct (306) and drawn out through the negative pressure air duct (304). The mold sleeve (302) has an extrusion chamber (309) located at the bottom of the mold core (303). The extrusion pipe (308) is connected to the extrusion chamber (309). The other end of the extrusion pipe (308) is connected to the extruder (6).
2. The heavy-duty packaging bag blown film machine according to claim 1, characterized in that, The inflation traction system includes a control cabinet (4), a heat exchanger (5) and a buffer tank. The positive pressure duct (306) is connected to the output end of the heat exchanger (5) through a positive pressure pipeline (305). The output end of the negative pressure duct (304) is connected to the fan (9) through a negative pressure pipeline (307). The fan (9) and the heat exchanger (5) are connected to the buffer tank through a pipeline. The control cabinet (4) controls the heat exchange temperature of the heat exchanger (5) and the air flow rate of the positive pressure duct (306) and the air flow rate of the negative pressure duct (304).
3. The heavy-duty packaging bag blown film machine according to claim 1 or 2, characterized in that, The negative pressure duct (304) passes through the middle of the positive pressure duct (306) and extends upward to the inside of the herringbone clamp (2). There is a gap between the airflow output end of the positive pressure duct (306) and the negative pressure duct (304) for blowing out airflow.
4. The heavy-duty packaging bag blown film machine according to claim 2, characterized in that, The negative pressure duct (304) is equipped with equidistantly distributed air pressure sensors (8), which are electrically connected to the control cabinet (4). The air flow rate of the positive pressure duct (306) and the air flow rate of the negative pressure duct (304) are controlled according to the detection value of the air pressure sensor (8).
5. The heavy-duty packaging bag blown film machine according to claim 4, characterized in that, Both the positive pressure pipeline (305) and the negative pressure pipeline (307) are equipped with air flow control valves.