A packaging bag film blowing and cooling device

Abstract

The utility model relates to packing bag processing technical field, concretely is a kind of packing bag film blowing cooling device, including base, mounting hole, driving mechanism, cooling cover and main pipe;Multiple groups of mounting holes are set up on base;Mounting hole is installed in the middle part of base and is communicated with base;Cooling cover is adjustably installed on driving mechanism, and cooling cover is provided with air supply cavity, and the inner wall of cooling cover is provided with multiple groups of air outlet;Main pipe input end is connected with external cold air flow supply mechanism, and main pipe output end is connected with air supply cavity.The utility model is provided with cooling cover, and blowing film is surrounded, so that just blown blowing film is avoided by surrounding dust and other interfering objects, and the setting of multiple groups of air outlet on the first cooling part, the second cooling part and the third cooling part in turn reduces, so that different height positions of blowing film can be cooled specifically, cooling is more uniform, and cold air flow utilization is more reasonable, to avoid waste, while improving cooling effect.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag processing technology, specifically a packaging bag blown film cooling device. Background Technology

[0002] Packaging straps are commonly used for food transportation. Cooling devices in the blown film process of packaging bags are used to reduce the temperature of the molten plastic film, so that it maintains the required thickness and quality during the production process.

[0003] Chinese patent CN219926906U discloses a packaging bag blown film cooling device, including a refrigeration unit and a support frame. An air supply pipe is connected to the interface of the refrigeration unit, and an air outlet ring is connected to the other end of the air supply pipe. The surface of the air outlet ring has a first air outlet hole and a second air outlet hole. A connecting rod is fixedly connected to the upper side of the air supply pipe, and a housing is fixedly connected to the upper end of the connecting rod. Both sides of the housing are connected to suction pipes. The right end of the right suction pipe is connected to a connector, and the right side of the connector is connected to an exhaust fan. A support base is fixedly connected to the lower side of the exhaust fan, and the lower end face of the support base is fixedly connected to the upper end face of the refrigeration unit. Through the design of the filter, suction ring, and exhaust fan, the cooling device can collect dust and impurities that may exist in the blown film cooling area, improving the practicality of the device.

[0004] However, the above-mentioned publicly available solutions have the following shortcomings: due to the setting of the support frame, the air outlet ring cannot be matched with the film blowing head of the blown film machine of different heights, resulting in a certain gap between the film blowing head and the bottom of the air outlet ring. When the air outlet ring and the exhaust ring are working, dust or other interference near the top of the blown film machine can easily interfere with the blown film that has just been blown out, reducing the cooling efficiency. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a packaging bag blown film cooling device.

[0006] The technical solution of this utility model is as follows: A packaging bag blown film cooling device includes a base with multiple sets of mounting holes; mounting holes are installed in the middle of the base and communicate with the base; a drive mechanism is set at the top of the base; a cooling cover is adjustablely mounted on the drive mechanism, the cooling cover is provided with an air supply cavity, the inner wall of the cooling cover is provided with multiple sets of air outlets, and the air outlets are connected to the air supply cavity; and a main pipe, the input end of which is connected to an external cold air supply mechanism, and the output end of the main pipe is connected to the air supply cavity.

[0007] Preferably, a sealing ring is installed on the outer circumferential surface of the sleeve, and a sealing gasket is provided at the bottom of the inner wall of the first cooling seat and the second cooling seat. The two sets of sealing gaskets correspond to the sealing ring, and a sealing strip is provided at the abutting end of the first cooling seat and the second cooling seat.

[0008] Preferably, the cooling cover is composed of a first cooling seat and a second cooling seat. The first cooling seat and the second cooling seat are driven to move closer or further apart from each other by a drive mechanism. The cooling cover is cylindrical, and multiple sets of air outlets are distributed on the inner walls of the first cooling seat and the second cooling seat.

[0009] Preferably, the drive mechanism includes a bidirectional lead screw rotatably connected to one side of the top of the base, and the bidirectional lead screw is driven to rotate by a motor; and a guide rod installed on the other side of the top of the base. Two sets of movable seats are symmetrically installed on both the bidirectional lead screw and the guide rod, and the two sets of movable seats on the bidirectional lead screw and the guide rod are respectively connected to the first cooling seat and the second cooling seat.

[0010] Preferably, the first and second cooling bases are provided with a first cooling section, a second cooling section and a third cooling section, and the number of air outlets distributed on the first cooling section, the second cooling section and the third cooling section gradually decreases; the main output end is equipped with three sets of branch pipes, which are respectively connected to the air supply chambers corresponding to the first cooling section, the second cooling section and the third cooling section.

[0011] Preferably, a guide mechanism is provided at the top of the cooling cover. The guide mechanism includes two sets of arc-shaped rods, which are respectively installed on the inner walls of the first cooling seat and the second cooling seat; and multiple sets of guide wheels, which are evenly rotated and connected to the arc-shaped rods.

[0012] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: This utility model facilitates the closing of the first and second cooling seats and their abutment against the outside of the sleeve through the driving mechanism, thereby surrounding and protecting the blown film head of the blown film machine, so that the blown film that has just been blown out is not affected by the surrounding dust and other interferences; the setting of the cooling cover facilitates the surrounding of the blown film, making the cooling more uniform; the setting of multiple sets of air outlets with a progressively reduced number on the first, second and third cooling sections allows for targeted cooling of different height positions of the blown film, making the use of cold air more reasonable, avoiding waste, and improving the cooling effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram showing the installation method of the first cooling seat and the second cooling seat of this utility model;

[0015] Figure 3 This is a top view of the connection method between the cooling cover and the base of this utility model.

[0016] Reference numerals: 1. Base; 101. Mounting hole; 102. Sleeve; 2. Two-way lead screw; 201. Guide rod; 202. Moving seat; 3. First cooling seat; 301. Second cooling seat; 302. Air supply cavity; 303. First cooling section; 304. Second cooling section; 305. Third cooling section; 306. Air outlet; 307. Main pipe; 308. Branch pipe; 4. Arc-shaped rod; 401. Guide wheel; 402. Bracket. Detailed Implementation

[0017] Example 1

[0018] like Figures 1 to 3 As shown, the present invention proposes a packaging bag blown film cooling device, including a base 1, mounting holes 101, a drive mechanism, a cooling cover, and a main pipe 307. The base 1 has multiple sets of mounting holes 101, which can be fixedly installed on the top of a blown film machine using bolts and mounting holes 101. The mounting holes 101 are located in the middle of the base 1 and communicate with it, and are positioned outside the film head of the blown film machine. The drive mechanism is located at the top of the base 1. The cooling cover is adjustablely mounted on the drive mechanism, and has an air supply chamber 302. Multiple sets of air outlets 306 are provided on the inner wall of the cooling cover, and the air outlets 306 communicate with the air supply chamber 302. The input end of the main pipe 307 is connected to an external cold air supply mechanism, and the output end of the main pipe 307 is connected to the air supply chamber 302.

[0019] Furthermore, a sealing ring is installed on the outer circumferential surface of the sleeve 102, and a sealing gasket is provided at the bottom of the inner wall of the first cooling seat 3 and the second cooling seat 301. The two sets of sealing gaskets correspond to the sealing ring. A sealing strip is provided at the abutting end of the first cooling seat 3 and the second cooling seat 301 to improve the sealing performance at the abutting point of the first cooling seat 3 and the second cooling seat 301, prevent the cold airflow from leaking out because it is not utilized by the blown film, and improve the sealing performance at the abutting point of the first cooling seat 3, the second cooling seat 301 and the mounting hole 101 to prevent external dust from entering and interfering with the blown film quality.

[0020] Furthermore, the cooling cover is composed of a first cooling seat 3 and a second cooling seat 301. The first cooling seat 3 and the second cooling seat 301 are driven to move closer or further apart by a driving mechanism. The cooling cover is cylindrical. The first cooling seat 3 and the second cooling seat 301 surround the blown film, so that the blown film can be cooled evenly around its perimeter. Multiple sets of air outlets 306 are distributed on the inner walls of the first cooling seat 3 and the second cooling seat 301.

[0021] Furthermore, the drive mechanism includes

[0022] The bidirectional lead screw 2 is rotatably connected to one side of the top of the base 1, and the bidirectional lead screw 2 is driven to rotate by a motor;

[0023] And guide rod 201, which is installed on the other side of the top of base 1. Two sets of movable seats 202 are symmetrically installed on both the bidirectional lead screw 2 and guide rod 201. The two sets of movable seats 202 on the bidirectional lead screw 2 and guide rod 201 are respectively connected to the first cooling seat 3 and the second cooling seat 301. The movable seat 202 is threaded to the bidirectional lead screw 2 or slidably connected to the guide rod 201.

[0024] Furthermore, the first cooling base 3 and the second cooling base 301 are provided with a first cooling section 303, a second cooling section 304, and a third cooling section 305. The number of air outlets 306 distributed on the first cooling section 303, the second cooling section 304, and the third cooling section 305 gradually decreases. Three sets of branch pipes 308 are installed at the output end of the main pipe 307. The branch pipes 308 are respectively connected to the air supply chambers 302 corresponding to the first cooling section 303, the second cooling section 304, and the third cooling section 305, which facilitates the delivery of cold air to the corresponding areas for targeted cooling. The inner walls of the first cooling base 3 and the second cooling base 301, and the parts opposite to the output ends of the branch pipes 308, do not have air outlets 306, which allows the cold air delivered by the branch pipes 308 to diffuse in the air supply chambers 302 and be blown out towards the inner packaging bag film through the multiple sets of air outlets 306, making the cold air output more uniform.

[0025] In this embodiment, the sleeve 102 is placed over the film head of the blown film machine, and the base 1 is connected to the top of the blown film machine via bolts and mounting holes 101. This allows the blown film for the packaging bag to pass through the sleeve 102 under the traction of the blown film machine. The controller starts the motor, driving the bidirectional lead screw 2 to rotate. Guided by the guide rod 201, multiple sets of moving seats 202 move the first cooling seat 3 and the second cooling seat 301 closer together along the bidirectional lead screw 2 until they are pressed against the sleeve 102. At this point, the first cooling seat 3 and the second cooling seat 301 close to form a cylindrical shape. The arrangement of the base 1, sleeve 102, first cooling seat 3, and second cooling seat 301 effectively surrounds and protects the film just blown out of the blown film head, preventing surrounding dust or other interference from affecting it. The blown film, which has just been blown out, is damaged upon contact. At the same time, cold air is supplied to the main pipe 307 through an external cold air supply mechanism. The cold air is then transported by the branch pipe 308 to the air supply chamber 302 on the first cooling seat 3 and the second cooling seat 301. The cold air is evenly blown out to the periphery of the blown film from multiple sets of air outlets 306 on the first cooling section 303, the second cooling section 304 and the third cooling section 305. The blown film moves upward continuously under the traction of the blown film machine. The temperature of the blown film is higher closer to the blown film head. The air outlets 306 at the first cooling section 303 are the most dense. The blown film is cooled and reduced in a targeted manner by the first cooling section 303, the second cooling section 304 and the third cooling section 305 to avoid wasting the cold air and further improve the cooling efficiency.

[0026] Example 2

[0027] like Figures 1 to 3 As shown, the present invention proposes a packaging bag blown film cooling device. Compared with Embodiment 1, the top of the cooling hood is provided with a guide mechanism, which includes an arc-shaped rod 4 and guide wheels 401. Two sets of arc-shaped rods 4 are provided, each set being installed on the inner wall of the first cooling seat 3 and the second cooling seat 301 respectively. The arc-shaped rods 4 are connected to the inner wall of the first cooling seat 3 or the second cooling seat 301 via a bracket 402, forming a heat dissipation channel between the arc-shaped rods 4 and the inner wall of the first cooling seat 3 or the second cooling seat 301, facilitating the rapid discharge of airflow after blown film cooling. Multiple sets of guide wheels 401 are provided, and these multiple sets of guide wheels 401 are evenly rotated and connected to the arc-shaped rods 4.

[0028] In this embodiment, when the packaging bag is pulled upward by the blown film machine, multiple sets of guide wheels 401 are rotatably connected to the arc-shaped rod 4, which can support and guide the upward blown film, prevent tilting, and further improve the blown film efficiency.

[0029] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A packaging bag blown film cooling device, characterized in that, include The base (1) has multiple sets of mounting holes (101) on it; Mounting hole (101), which is mounted in the middle of the base (1) and communicates with the base (1); The drive mechanism is located at the top of the base (1); A cooling cover is adjustablely mounted on a drive mechanism. The cooling cover is provided with an air supply chamber (302). The inner wall of the cooling cover is provided with multiple sets of air outlets (306). The air outlets (306) are connected to the air supply chamber (302). And the main pipe (307), whose input end is connected to an external cold air supply mechanism, and whose output end is connected to the air supply cavity (302).

2. The packaging bag blown film cooling device according to claim 1, characterized in that, A sealing ring is installed on the outer circumferential surface of the sleeve (102), and a sealing gasket is provided at the bottom of the inner wall of the first cooling seat (3) and the second cooling seat (301). The two sets of sealing gaskets correspond to the sealing ring, and a sealing strip is provided on the abutting end of the first cooling seat (3) and the second cooling seat (301).

3. The packaging bag blown film cooling device according to claim 1, characterized in that, The cooling cover is composed of a first cooling seat (3) and a second cooling seat (301). The first cooling seat (3) and the second cooling seat (301) are driven to move closer or further apart by a driving mechanism. The cooling cover is cylindrical, and multiple sets of air outlets (306) are distributed on the inner walls of the first cooling seat (3) and the second cooling seat (301).

4. The packaging bag blown film cooling device according to claim 3, characterized in that, The drive mechanism includes A two-way lead screw (2) is rotatably connected to one side of the top of the base (1), and the two-way lead screw (2) is driven to rotate by a motor; And guide rod (201), which is installed on the other side of the top of the base (1). Two sets of movable seats (202) are symmetrically installed on both the double-acting screw (2) and the guide rod (201). The two sets of movable seats (202) on the double-acting screw (2) and the guide rod (201) are respectively connected to the first cooling seat (3) and the second cooling seat (301).

5. A packaging bag blown film cooling device according to claim 1, characterized in that, The first cooling base (3) and the second cooling base (301) are provided with a first cooling section (303), a second cooling section (304) and a third cooling section (305). The number of air outlets (306) distributed on the first cooling section (303), the second cooling section (304) and the third cooling section (305) gradually decreases. The main pipe (307) output end is equipped with three sets of branch pipes (308), which are connected to the air supply chambers (302) corresponding to the first cooling section (303), the second cooling section (304) and the third cooling section (305) respectively.

6. A packaging bag blown film cooling device according to claim 3, characterized in that, A guide mechanism is provided at the top of the cooling shroud. The guide mechanism includes... The arc-shaped rod (4) is provided in two sets, and the two sets of arc-shaped rods (4) are respectively installed on the inner walls of the first cooling seat (3) and the second cooling seat (301); And guide wheels (401), which are provided in multiple sets, and multiple sets of guide wheels (401) are evenly rotated and connected to the arc-shaped rod (4).

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