Cooling device of blow molding machine for PE packaging bag processing

Abstract

The utility model discloses a kind of PE packaging bag processing blow molding machine cooling device, comprising: cooling liquid tank, cooling liquid tank top is fixedly connected with bottomless heat sink, one end inside bottomless heat sink is equipped with driving mechanism, another end inside bottomless heat sink is equipped with liquid receiving mechanism, through window is set in the middle of the back of bottomless heat sink, through inlet window is set in the middle of the front of bottomless heat sink, one end of the top of bottomless heat sink is fixedly connected with flat mouth pipe;The utility model extracts cooling liquid from cooling liquid tank by liquid pump, is sent to flat mouth pipe by multiple bending type cooling pipe, heat of mould is taken away by increasing contact area, cooling liquid with heat is fan-shaped sprayed to bottomless heat sink from flat mouth pipe, thin layer liquid film is formed on the liquid receiving heat-conducting inclined plate of staggered inclination, air after filtration is inhaled by motor-driven fan, air and flowing cooling liquid are fully contacted, cooling liquid is divided into droplet, realizes depth heat dissipation by penetrating liquid film and droplet gap.

Description

Technical Field

[0001] This utility model relates to the technical field of blow molding machine cooling equipment, specifically a blow molding machine cooling device for PE packaging bag processing. Background Technology

[0002] The cooling device of the blow molding machine for PE packaging bag processing is a key piece of equipment used in the blow molding process to cool and solidify the blow-molded PE film bubble. Its function is to quickly reduce the temperature of the film bubble, so that it can be quickly solidified and shaped, thereby ensuring the uniformity of the thickness, mechanical properties and appearance quality of the PE film bubble, avoiding problems such as deformation, adhesion or unstable performance of the film bubble due to excessive temperature, and ensuring that the blow-molded PE packaging bag meets the production requirements and usage standards.

[0003] For example, a cooling device for a blow molding machine used in PE packaging bag processing disclosed in Chinese patent literature (publication number: CN222495366U) uses the cooperation of a front mold and a rear mold to form a plastic film on PE material. Then, through the circulation of guide holes and water pipes, the plastic product and the mold are cooled. At the same time, the operation of motor one and motor two drives the guide holes to perform ventilation and heat dissipation. Compared with traditional devices, this device completes the cyclic cooling through the cooperation of the plastic film mechanism and water pipes. Then, through the drive and ventilation mechanism, the coolant inside the cooling tank is cooled, so that the plastic product can dissipate heat without contacting the direct water flow. This avoids the cleaning of the mold after heat dissipation and also avoids the deformation of the mold caused by water washing. It ensures production quality while improving cooling efficiency.

[0004] However, the method of cooling the coolant inside the coolant tank by driving and ventilation mechanisms can only provide air cooling to the surface of the coolant. Although the oscillation of the guide hole can help to disturb the airflow, it is difficult for the airflow to penetrate into the coolant, resulting in limited heat dissipation efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a cooling device for a blow molding machine used in PE packaging bag processing in order to solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cooling device for a blow molding machine used in PE packaging bag processing, comprising: a coolant tank, a bottomless heat dissipation box fixedly connected to the top of the coolant tank, a driving mechanism provided at one end of the bottomless heat dissipation box, a liquid receiving mechanism provided at the other end of the bottomless heat dissipation box, a through-out window in the middle of the back of the bottomless heat dissipation box, a through-in window in the middle of the front of the bottomless heat dissipation box, a flat-nozzle pipe fixedly connected to one end of the top of the bottomless heat dissipation box, a liquid pump connected to one end of the outer side of the coolant tank via a pipe, and a multi-bend cooling pipe fixedly connected to the outlet of the liquid pump.

[0007] As a further embodiment of this utility model: a filter screen is fixedly connected inside the through-out window, a filter screen is fixedly connected inside the through-in window, and a flow guide and discharge box is fixedly connected to the middle of the back of the bottomless heat dissipation box outside the through-out window.

[0008] As a further embodiment of this utility model: the drive mechanism includes a support frame, a fan, and a central shaft. The support frame is fixedly connected to the inner side wall of the bottomless heat sink. The fan is rotatably connected to the middle of one side of the support frame. The central shaft is fixedly connected to the middle of the fan, and a portion of the central shaft passes through the support frame. A rotating shaft, a motor, and a first pulley are also included. The rotating shaft is rotatably connected to the upper front of the bottomless heat sink, and a portion of the rotating shaft extends into the interior of the bottomless heat sink. The motor is fixedly connected to the upper front of the bottomless heat sink. The first pulley is fixedly connected to the end of the rotating shaft extending into the interior of the bottomless heat sink, and the output end of the motor is fixedly connected to the other end of the first pulley. A second pulley and a belt are also included. The second pulley is fixedly connected to the end of the central shaft passing through the support frame, and the belt is located in the middle of the first and second pulleys.

[0009] As a further embodiment of this utility model: the liquid receiving mechanism includes a liquid receiving heat-conducting inclined plate, a heat-conducting baffle, and a V-shaped support heat sink. The liquid receiving heat-conducting inclined plate is fixedly connected to one side inside the bottomless heat sink. The heat-conducting baffle is symmetrically fixedly connected to both sides above the liquid receiving heat-conducting inclined plate. The V-shaped support heat sink is fixedly connected to the bottom of the liquid receiving heat-conducting inclined plate, and part of the V-shaped support heat sink extends to the outside of the bottomless heat sink.

[0010] As a further improvement of this utility model: the other end of the multi-bend cooling pipe is fixedly connected to the flat-nozzle pipe, and part of the flat-nozzle pipe extends to the top of the bottomless heat sink.

[0011] As a further improvement of this utility model: multiple sets of the liquid-conducting heat-conducting inclined plates and the V-shaped support heat sinks are provided. The multiple sets of V-shaped support heat sinks are symmetrically and alternately arranged on both sides inside the bottomless heat sink box. Each set of liquid-conducting heat-conducting inclined plates is symmetrically provided with heat-conducting baffles on both sides above it.

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

[0013] In this invention, a liquid pump draws coolant from the coolant tank and delivers it through a multi-bend cooling pipe to a flat-nozzle pipe, increasing the contact area to remove heat from the mold. The heated coolant is then sprayed in a fan shape from the flat-nozzle pipe onto a bottomless heat dissipation box, forming a thin liquid film that flows on the staggered, inclined liquid-conducting heat-conducting plates. A motor-driven fan draws in filtered air, which comes into full contact with the flowing coolant, breaking it into droplets. This air penetrates the liquid film and the gaps between the droplets to achieve deep heat dissipation. The hot air is then discharged through a filter, and the cooled coolant is recycled. This design maximizes the contact area between the coolant and the air, overcoming the limitation of surface heat dissipation compared to traditional air cooling, significantly improving heat dissipation efficiency, shortening cooling time, and increasing production efficiency. Furthermore, the V-shaped support heat dissipation fins both support the inclined plate structure and assist in heat dissipation through natural air convection, forming a dual heat dissipation path of "inclined plate liquid film heat dissipation + support plate metal heat conduction," further enhancing the heat dissipation effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the coolant tank in this utility model;

[0016] Figure 3 This is a schematic diagram of the bottomless heat dissipation box in this utility model;

[0017] Figure 4 This is a schematic diagram of the drive mechanism in this utility model;

[0018] Figure 5 This is a schematic diagram of the liquid receiving mechanism in this utility model.

[0019] In the diagram: 1. Coolant tank; 2. Bottomless heat sink; 3. Drive mechanism; 301. Support frame; 302. Fan; 303. Central shaft; 304. Rotating shaft; 305. Motor; 306. Pulley 1; 307. Pulley 2; 308. Belt; 4. Liquid receiving mechanism; 401. Liquid receiving and heat-conducting inclined plate; 402. Heat-conducting baffle; 403. V-shaped support heat sink; 5. Through-hole outlet window; 6. Through-hole inlet window; 7. Flat nozzle tube; 8. Liquid pump; 9. Multi-bend cooling tube; 10. Filter screen 1; 11. Filter screen 2; 12. Drainage box. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0022] Reference Figures 1 to 5 In this embodiment of the utility model, a cooling device for a blow molding machine for processing PE packaging bags includes: a coolant tank 1 for storing coolant and providing a coolant source for the entire cooling system; a bottomless heat dissipation box 2 is fixedly connected to the top of the coolant tank 1 as the main place for coolant heat dissipation; and a drive mechanism 3 is provided at one end of the bottomless heat dissipation box 2 for air cooling.

[0023] The bottomless heat sink 2 has a liquid receiving mechanism 4 at the other end to receive the coolant with heat entering the bottomless heat sink 2 and to spread the coolant area. The bottomless heat sink 2 has a through window 5 in the middle of the back side as a channel for hot air to be discharged from the bottomless heat sink 2 after absorbing heat.

[0024] The bottomless heat sink 2 has a through-hole window 6 in the center of the front, which serves as an entry channel for outside air. When air cooling is performed, outside air can be drawn into the bottomless heat sink 2. A flat nozzle tube 7 is fixedly connected to one end of the top of the bottomless heat sink 2. Coolant with heat is sprayed into the bottomless heat sink 2 in a fan shape from the end of the flat nozzle tube 7. A liquid pump 8 is connected to one end of the coolant tank 1 through a pipe to provide power for the circulation of coolant.

[0025] The outlet of the liquid pump 8 is fixedly connected to a multi-bend cooling pipe 9, which is used to cool and cool the blow molding machine mold. The blow molding machine mold is existing technology, specifically refer to announcement number: CN222495366U. The multi-bend cooling pipe 9 has a curved design to increase the contact area between the coolant and the mold, making it easier to remove heat from the inside of the mold and cool it. The other end of the multi-bend cooling pipe 9 is fixedly connected to a flat nozzle pipe 7, which extends to the top of the bottomless heat sink 2.

[0026] Reference Figure 1 and Figure 3 A filter screen 10 is fixedly connected inside the through-outlet window 5 to prevent dust from entering the bottomless heat sink 2 through the through-outlet window 5. A filter screen 11 is fixedly connected inside the through-inlet window 6 to filter the incoming outside air and prevent impurities from entering the bottomless heat sink 2 and affecting the operation of the cooling system. A guide exhaust box 12 is fixedly connected to the middle of the back of the bottomless heat sink 2 outside the through-outlet window 5 to guide the hot air discharged from the through-outlet window 5 to dissipate outwards, and to rationally plan the hot air exhaust path.

[0027] Reference Figure 1 , Figure 3 and Figure 4 The drive mechanism 3 includes a support frame 301, a fan 302 and a central shaft 303. The support frame 301 is fixedly connected to the inner side wall of the bottomless heat sink 2. The fan 302 is rotatably connected to the middle of one side of the support frame 301. The central shaft 303 is fixedly connected to the middle of the fan 302, and part of the central shaft 303 passes through the support frame 301.

[0028] The rotating shaft 304, motor 305, and pulley 306 are rotatably connected to the upper front of the bottomless heat sink 2, and part of the rotating shaft 304 extends into the interior of the bottomless heat sink 2. The motor 305 is fixedly connected to the upper front of the bottomless heat sink 2. The pulley 306 is fixedly connected to one end of the rotating shaft 304 that extends into the interior of the bottomless heat sink 2. The output end of the motor 305 is fixedly connected to the other end of the pulley 306.

[0029] Belt pulley 307 and belt 308 are fixedly connected to one end of the central shaft 303 that passes through the support frame 301. Belt 308 is located in the middle of belt pulley 306 and belt pulley 307. After the motor 305 starts, it drives belt pulley 307 to rotate through belt pulley 306 and belt 308, which in turn drives the central shaft 303 to rotate the fan 302. The fan 302 draws in outside air through the through-window 6. The air is filtered by filter screen 11 and then enters the bottomless heat sink 2, which promotes the flow of air to fully contact the flowing coolant film and droplets, thus carrying away heat.

[0030] Reference Figure 3 and Figure 5The liquid receiving mechanism 4 includes a liquid receiving and heat-conducting inclined plate 401, a heat-conducting baffle 402, and a V-shaped support heat sink 403. The liquid receiving and heat-conducting inclined plate 401 is fixedly connected to one side inside the bottomless heat sink 2. The heat-conducting baffle 402 is symmetrically fixedly connected to both sides above the liquid receiving and heat-conducting inclined plate 401. The V-shaped support heat sink 403 is fixedly connected below the liquid receiving and heat-conducting inclined plate 401, and part of the V-shaped support heat sink 403 extends to the outside of the bottomless heat sink 2. Multiple sets of liquid receiving and heat-conducting inclined plates 401 and V-shaped support heat sinks 403 are provided, and multiple sets of V-shaped support heat sinks 403 are located in the bottomless heat sink. The interior of the box 2 is symmetrically and staggered on both sides. Each set of liquid-conducting heat-conducting inclined plates 401 is symmetrically equipped with heat-conducting baffles 402 on both sides above it. The highest liquid-conducting heat-conducting inclined plate 401 on one side of the bottomless heat dissipation box 2 receives the coolant flowing from the flat nozzle 7 and allows it to flow along the surface of the inclined plate. Because the liquid-conducting heat-conducting inclined plate 401 is inclined and the heat-conducting baffles 402 above it restricts the flow direction, the coolant will form a thin liquid film on the inclined plate. The coolant flowing to the end of the liquid-conducting heat-conducting inclined plate 401 drips onto the lower liquid-conducting heat-conducting inclined plate 401 on the other side below. This staggered flow allows for deeper air cooling.

[0031] The working principle of this utility model is as follows: the coolant in the coolant tank 1 is drawn out through the pipeline by the liquid pump 8 and transported to the flat nozzle pipe 7 through the multi-bend cooling pipe 9. Due to the bend design of the pipe diameter, the multi-bend cooling pipe 9 can increase the contact area between the coolant and the mold, thereby removing the internal heat and carrying out the cooling operation.

[0032] As the coolant is delivered, the coolant, carrying heat, is sprayed in a fan shape from the end of the flat nozzle 7 into the bottomless heat sink 2. At this time, the highest liquid-conducting heat-conducting inclined plate 401 on one side of the bottomless heat sink 2 receives the coolant and allows it to flow along the surface of the inclined plate. Because the liquid-conducting heat-conducting inclined plate 401 is inclined and there is a heat-conducting baffle 402 above it to restrict the flow direction, the coolant will form a thin liquid film on the inclined plate. The coolant flowing to the end of the liquid-conducting heat-conducting inclined plate 401 drips onto the lower liquid-conducting heat-conducting inclined plate 401 on the other side below, and so on, flowing alternately.

[0033] Simultaneously, after the motor 305 starts, it drives the pulley 307 to rotate via the pulley 306 and belt 308, causing the central shaft 303 to drive the fan 302 to rotate. The fan 302 draws in outside air through the through-entry window 6. After being filtered by the filter screen 11, the air enters the bottomless heat sink 2. The flowing air fully contacts the flowing coolant film and droplets, carrying away heat. As the coolant drips layer by layer, it is broken into droplets. The airflow can penetrate the gaps between the liquid film and droplets, achieving deep heat dissipation from the surface to the interior. The hot air is filtered by the filter screen 10 and discharged through the through-outlet window 5. After entering the guide discharge box 12, it dissipates outward. The cooled coolant passes through the bottomless heat sink. 2. The coolant enters the coolant tank 1 for circulating cooling. This method maximizes the contact area between the hot coolant and the air, improving heat dissipation efficiency, further shortening the cooling time, and increasing production efficiency. It avoids directly cooling the hot coolant with air, which only cools the surface of the coolant and makes it difficult for the airflow to penetrate into the coolant, thus limiting heat dissipation efficiency. In addition to supporting the liquid-conducting heat-conducting inclined plate 401 and the heat-conducting baffle 402, the part of the heat dissipation fin exposed to the outside air can further dissipate heat through natural air convection, forming a dual heat dissipation path of "inclined plate liquid film heat dissipation + support plate metal heat conduction", which plays an auxiliary role in heat dissipation.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cooling device for a blow molding machine used in PE packaging bag processing, characterized in that, include: A coolant tank (1) is fixedly connected to a bottomless heat sink (2) at the top of the coolant tank (1). A drive mechanism (3) is provided at one end of the bottomless heat sink (2). A liquid receiving mechanism (4) is provided at the other end of the bottomless heat sink (2). A through-out window (5) is opened in the middle of the back of the bottomless heat sink (2). A through-in window (6) is opened in the middle of the front of the bottomless heat sink (2). A flat-nozzle pipe (7) is fixedly connected to one end of the top of the bottomless heat sink (2). A liquid pump (8) is connected to one end of the outside of the coolant tank (1) through a pipe. A multi-bend cooling pipe (9) is fixedly connected to the outlet of the liquid pump (8).

2. The cooling device for a blow molding machine used in PE packaging bag processing according to claim 1, characterized in that, A filter screen (10) is fixedly connected inside the through-out window (5), a filter screen (11) is fixedly connected inside the through-in window (6), and a flow guide and discharge box (12) is fixedly connected to the middle of the back of the bottomless heat dissipation box (2) outside the through-out window (5).

3. The cooling device for a blow molding machine used in PE packaging bag processing according to claim 1, characterized in that, The drive mechanism (3) includes: The support frame (301), fan (302) and central shaft (303) are fixedly connected to the inner side wall of the bottomless heat sink (2), the fan (302) is rotatably connected to the middle of one side of the support frame (301), and the central shaft (303) is fixedly connected to the middle of the fan (302), and the central shaft (303) partially penetrates the support frame (301). A rotating shaft (304), a motor (305), and a pulley (306) are provided. The rotating shaft (304) is rotatably connected to the upper front of the bottomless heat sink (2), and part of the rotating shaft (304) extends into the interior of the bottomless heat sink (2). The motor (305) is fixedly connected to the upper front of the bottomless heat sink (2). The pulley (306) is fixedly connected to one end of the rotating shaft (304) extending into the interior of the bottomless heat sink (2). The output end of the motor (305) is fixedly connected to the other end of the pulley (306). The second pulley (307) and the belt (308) are fixedly connected to one end of the central shaft (303) that passes through the support frame (301), and the belt (308) is located in the middle of the first pulley (306) and the second pulley (307).

4. The cooling device for a blow molding machine used in PE packaging bag processing according to claim 1, characterized in that, The liquid receiving mechanism (4) includes: The liquid-conducting heat-conducting inclined plate (401), the heat-conducting baffle (402), and the V-shaped support heat sink (403) are provided. The liquid-conducting heat-conducting inclined plate (401) is fixedly connected to one side inside the bottomless heat sink (2). The heat-conducting baffle (402) is symmetrically fixedly connected to both sides above the liquid-conducting heat-conducting inclined plate (401). The V-shaped support heat sink (403) is fixedly connected to the bottom of the liquid-conducting heat-conducting inclined plate (401), and part of the V-shaped support heat sink (403) extends to the outside of the bottomless heat sink (2).

5. A cooling device for a blow molding machine for processing PE packaging bags according to claim 1, characterized in that, The other end of the multi-bend cooling pipe (9) is fixedly connected to the flat-nozzle pipe (7), and part of the flat-nozzle pipe (7) extends to the top of the bottomless heat sink (2).

6. A cooling device for a blow molding machine for processing PE packaging bags according to claim 4, characterized in that, Multiple sets of liquid-conducting heat-conducting inclined plates (401) and V-shaped support heat sinks (403) are provided. Multiple sets of V-shaped support heat sinks (403) are symmetrically and alternately arranged on both sides inside the bottomless heat sink (2). Each set of liquid-conducting heat-conducting inclined plates (401) is symmetrically provided with heat-conducting baffles (402) on both sides above it.

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