Packaging bag film blow molding equipment

Abstract

The utility model relates to the technical field of blow molding equipment, and particularly discloses packaging bag film blow molding equipment which comprises a film blowing machine head, a cooling air duct is arranged above the film blowing machine head and is of an annular structure, and a first partition plate is horizontally arranged in the middle of the cooling air duct and divides the cooling air duct into an upper half part and a lower half part. Air inlet pipes are connected to the outer side walls of the bottom ends of the upper half part and the lower half part, the air inlet pipes are connected with an air outlet port of the blowing device through pipelines, an air outlet pipe is arranged at the top end of the upper half part, an air outlet is formed in the outer side wall of the top end of the lower half part in a penetrating mode, and a plurality of heat dissipation openings are annularly and evenly distributed in the inner side wall of the lower half part. According to the utility model, the film is cooled by adopting a method of cooling after heat dissipation, and hot air is discharged out of the cooling air duct in the heat dissipation process, so that the hot air is prevented from moving upwards along with the film, the heat dissipation effect is improved, and meanwhile, the cooled air is used for rapidly cooling the film, so that the cooling efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to blow molding equipment technical field, concretely is a packaging bag film blow molding equipment. BACKGROUND

[0002] The blow molding machine is one of the most widely used processing equipment in the packaging industry. The blow molding machine is mainly used for manufacturing hollow plastic products, and its working principle mainly includes the following key steps: raw material conveying, heating and melting, extrusion parison, mold closing, blowing and expanding, demolding operation and post-processing process.

[0003] Chinese patent CN111331872B discloses a PE film blowing machine, which comprises a rack, a film blowing head, a cooling air ring, a traction frame, a motor and a controller; the lower part of the rack is provided with a film blowing head, the middle part of the rack is provided with a cooling air ring, the bottom of the cooling air ring is provided with an arc-shaped protrusion, the cooling air ring is slidably installed on the arc-shaped groove of the annular base through the arc-shaped protrusion at the bottom, the center of gravity of the cooling air ring is located on the axis of the center of gravity of the annular base, and the air outlet of the cooling air ring is provided with an air outlet pipe.

[0004] In the above technical solution, the film is cooled mainly by the fresh cold air continuously blown out of the air outlet, and in the cooling process, the heat at the sofa of the film heats the surrounding air to form a hot air current which also flows upward with the upward blowing air current, and cannot be effectively dissipated. UTILITY MODEL CONTENTS

[0005] To solve the above problems, the utility model adopts the following technical scheme.

[0006] A packaging bag film blow molding equipment, comprising a film blowing head, a cooling air cylinder is arranged above the film blowing head, the cooling air cylinder is of an annular structure, a partition plate one is horizontally arranged in the middle of the cooling air cylinder to divide the cooling air cylinder into an upper half and a lower half, an air inlet pipe is connected to the outer side wall of the bottom end of the upper half and the lower half, the air inlet pipe is connected to the air outlet port of the air blowing device through a pipeline, an air outlet pipe is arranged at the top end of the upper half, an air outlet is arranged through the outer side wall of the top end of the lower half, and a plurality of heat dissipation openings are uniformly arranged on the inner side wall of the lower half.

[0007] Preferably, a guide plate one is arranged on the outer side of the middle of the cooling zone air cylinder, and the outer edge of the guide plate one is curved downward in an arc shape.

[0008] Preferably, a guide plate two is arranged on the inner side of the lower half inner side wall corresponding to the position of the heat dissipation opening, the lower end of the guide plate two is connected to the lower half inner side wall below the heat dissipation opening, and the other end of the guide plate two extends upward to shield the heat dissipation opening.

[0009] Preferably, the heat dissipation opening is provided with a baffle with a middle outward arc-shaped protrusion, and a plurality of through holes are arranged on the baffle.

[0010] Preferably, the inner side wall of the top end of the lower half is provided with a guide plate three.

[0011] Preferably, the inner side wall of the upper half is provided with a condenser pipe arranged in a ring shape, and the condenser pipe is connected with a refrigerating machine.

[0012] Preferably, the bottom end of the upper half and the bottom end of the lower half are respectively provided with a partition two and a partition three, an air inlet cavity one is formed between the partition two and the partition one, a plurality of vertical plates one are vertically arranged in the air inlet cavity one, the air inlet cavity one is divided into a plurality of sections, a ventilation opening one is arranged on the partition two corresponding to each section of the air inlet cavity one, an air inlet cavity two is formed between the partition three and the bottom of the cooling air duct, a plurality of vertical plates two are vertically arranged in the air inlet cavity two, the air inlet cavity two is divided into a plurality of sections, and a ventilation opening two is arranged on the partition three corresponding to each section of the air inlet cavity two.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The utility model discloses a method for cooling the film by first radiating heat and then reducing temperature, the process of radiating heat discharges hot air to the outside of the cooling air duct, thereby avoiding the hot air moving upward together with the film, improving the heat dissipation effect, and simultaneously using the air after reducing temperature to rapidly reduce the temperature of the film, further improving the cooling efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic view of the utility model;

[0016] Figure 2 It is the whole sectional view of the utility model;

[0017] Figure 3 It is Figure 1 It is the local structure schematic view of the middle A.

[0018] In the drawing: 1, film blowing machine head;2, partition one;3, upper half;4, lower half;5, partition two;6, partition three;7, vertical plate one;8, ventilation opening one;9, vertical plate two;10, ventilation opening two;11, air outlet pipe;12, air outlet;13, heat dissipation opening;14, guide plate one;15, guide plate two;16, baffle;17, through hole;18, guide plate three;19, condenser pipe;20, air inlet pipe. DETAILED DESCRIPTION

[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments, and all the other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative labor fall within the protection scope of the present application.

[0020] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Embodiments

[0022] As Figures 1-3As shown, in this embodiment, a packaging bag film blowing device, comprising, a film blowing head 1, a cooling air cylinder is arranged above the film blowing head 1, the cooling air cylinder is of annular structure, a partition plate one 2 is horizontally arranged in the middle of the cooling air cylinder to divide the cooling air cylinder into an upper half 3 and a lower half 4, in order to ensure the stability of the upward air flow in the upper half 3 and the lower half 4, the bottom end of the upper half 3 and the lower half 4 is respectively horizontally provided with a partition plate two 5 and a partition plate three 6, the partition plate two 5 and the partition plate one 2 form an air inlet cavity one, a plurality of vertical plates one 7 are vertically arranged in the air inlet cavity one to divide the air inlet cavity one into a plurality of sections, the partition plate two 5 is provided with a ventilation opening one 8 corresponding to each section of the air inlet cavity one, the partition plate three 6 and the bottom of the cooling air cylinder form an air inlet cavity two, a plurality of vertical plates two 9 are vertically arranged in the air inlet cavity two to divide the air inlet cavity two into a plurality of sections, the partition plate three 6 is provided with a ventilation opening two 10 corresponding to each section of the air inlet cavity two, each section of the air inlet cavity one and each section of the air inlet cavity two is communicated with an air inlet pipe 20, the air inlet pipe 20 is connected with the air outlet port of the air blowing device through a pipeline, the top end of the upper half 3 is provided with an air outlet pipe 11, the top end of the lower half 4 is provided with an air outlet 12, the inner side wall of the lower half 4 is provided with a plurality of heat dissipation openings 13 arranged in a ring shape.

[0023] In order to prevent the discharged hot air from flowing upward rapidly, thereby increasing the temperature of the upper layer of air and affecting cooling, in this embodiment, a flow guide plate one 14 is arranged outside the middle of the cooling zone air cylinder, the outer edge of the flow guide plate one 14 is curved downward in an arc shape, and the flow guide plate one 14 is located above the air outlet 12.

[0024] In order to make the air introduced into the lower half 4 directly blow out from the heat dissipation openings 13, thereby impacting the film, in this embodiment, a flow guide plate two 15 is arranged on the inner side of the inner side wall of the lower half 4 corresponding to the position of the heat dissipation openings 13, the lower end of the flow guide plate two 15 is connected with the inner side wall of the lower half 4 below the heat dissipation openings 13, and the other end of the flow guide plate two 15 extends upward to block the heat dissipation openings 13.

[0025] In order to prevent the film from entering the heat dissipation openings 13 and causing abrasion, in this embodiment, a baffle 16 is arranged outside the heat dissipation openings 13, the baffle 16 is outwardly arc-shaped, and a plurality of through holes 17 are arranged on the baffle 16.

[0026] In this embodiment, a flow guide plate three 18 is arranged inside the inner side wall of the top end of the lower half 4.

[0027] In this embodiment, a condenser pipe 19 is arranged in a ring shape on the inner side of the outer side wall of the upper half 3, and the condenser pipe 19 is connected with a refrigeration machine.

[0028] To ensure the stability of the upward airflow in the upper half 3 and the lower half 4, the bottom end of the upper half 3 and the lower half 4 is respectively provided with a baffle two 5 and a baffle three 6 horizontally, the baffle two 5 and the baffle one 2 form an air inlet cavity one, a plurality of vertical plates one 7 are vertically arranged in the air inlet cavity one, the air inlet cavity one is divided into a plurality of sections, the baffle two 5 is provided with a ventilation opening one 8 corresponding to each section of the air inlet cavity one, the baffle three 6 and the bottom of the cooling air duct form an air inlet cavity two, a plurality of vertical plates two 9 are vertically arranged in the air inlet cavity two, the air inlet cavity two is divided into a plurality of sections, the baffle three 6 is provided with a ventilation opening two 10 corresponding to each section of the air inlet cavity two, and each section of the air inlet cavity one and each section of the air inlet cavity two are provided with an air inlet pipe 5.

[0029] The working principle and beneficial effects of the above technical scheme are:

[0030] In use, the air flow blown by the air blower enters each section of the air inlet cavity one and the air inlet cavity two through the air inlet pipe 20, and flows upward through the ventilation opening one 8 and the ventilation opening two 10. When the air in the lower half 4 flows upward, there is a pressure difference between the inner and outer sides of the upper end of the guide plate two 15, so that the hot air around the film quickly enters the cooling air duct through the heat dissipation opening 13 and is extracted, thereby achieving the purpose of rapid heat dissipation. The air in the upper half 3 is cooled by heat exchange with the condenser pipe 19, so that the air blown out of the air outlet pipe 11 is cold air with a lower temperature, thereby cooling the film when blowing out.

[0031] Compared with the prior art, the film is cooled by the method of first heat dissipation and then cooling, the hot air is discharged to the outside of the cooling air duct during the heat dissipation process, thereby avoiding the hot air moving upward together with the film, improving the heat dissipation effect, and simultaneously using the cooled air to quickly cool the film, further improving the cooling efficiency.

[0032] The above is only a preferred specific embodiment of the present application; however, the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacements or changes to the technical scope disclosed in the present application according to the technical scheme and improvement concept of the present application, which should be covered in the protection scope of the present application.

Claims

1. A packaging bag film blowing apparatus characterized by comprising: Including, blow film machine head (1), the cooling wind tube is arranged above the blow film machine head (1), the cooling wind tube is annular structure, the middle part of cooling wind tube is horizontally provided with the baffle one (2) and is divided into the upper half (3) and the lower half (4), the bottom end outside wall of the upper half (3) and the lower half (4) is connected and is provided with the air inlet pipe (20), the air inlet pipe (20) is connected with the air outlet port of the air blowing device through the pipeline, the top end of the upper half (3) is provided with the air outlet pipe (11), the top end outside wall of the lower half (4) is provided with the air outlet (12) through, the inner side wall of the lower half (4) is provided with annularly and uniformly arranged with a plurality of heat dissipation openings (13).

2. A packaging bag film blowing apparatus according to claim 1, wherein The middle part of the cooling wind tube is provided with a guide plate one (14) outside, and the outer edge of the guide plate one (14) is curved in an arc shape downward.

3. A packaging bag film blowing apparatus according to claim 2, wherein The inner side of the inner side wall of the lower half (4) is provided with a guide plate two (15) corresponding to the position of the heat dissipation opening (13), the lower end of the guide plate two (15) is connected with the inner side wall of the lower half (4) below the heat dissipation opening (13), and the other end of the guide plate two (15) extends upward to shield the heat dissipation opening (13).

4. A packaging bag film blowing apparatus according to claim 3, wherein The heat dissipation opening (13) is provided with a baffle (16) outwardly curved in an arc shape in the middle, and a plurality of through holes (17) are formed in the baffle (16).

5. A packaging bag film blowing apparatus according to claim 1, wherein The inner side of the inner side wall of the top end of the lower half (4) is provided with a guide plate three (18).

6. A packaging bag film blowing apparatus according to claim 1, wherein The outer side wall of the upper half (3) is provided with a condenser pipe (19) in an annular arrangement, and the condenser pipe (19) is connected with a refrigeration machine.

7. A packaging bag film blowing apparatus according to claim 1, wherein The bottom end of the upper half (3) and the lower half (4) is respectively provided with a baffle two (5) and a baffle three (6) horizontally, the baffle two (5) and the baffle one (2) form an air inlet cavity one, a plurality of vertical plates one (7) are vertically arranged in the air inlet cavity one, and the air inlet cavity one is divided into a plurality of sections, the baffle two (5) is provided with a ventilation opening one (8) corresponding to each section of the air inlet cavity one, the baffle three (6) and the bottom of the cooling wind tube form an air inlet cavity two, a plurality of vertical plates two (9) are vertically arranged in the air inlet cavity two, and the air inlet cavity two is divided into a plurality of sections, and the baffle three (6) is provided with a ventilation opening two (10) corresponding to each section of the air inlet cavity two.

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