Cooling device for blow molding machine

Abstract

The utility model relates to a cooling device for a blow molding machine, which comprises a group of air boxes and a conveyor, the conveyor is arranged between the group of air boxes and is used for conveying blow molding products, the air boxes are provided with air injection systems, the air injection systems are used for feeding external air into the air boxes, the air boxes are provided with air curtains which are communicated with each other, and the air curtains are communicated with the air boxes. The air curtain is used for air cooling of blow molding products, and a water cooling mechanism is arranged on the air box. And the water cooling mechanism comprises a set of copper pipes and a water circulation system, and the set of copper pipes are arranged in the corresponding air boxes correspondingly. According to the blow molding equipment, blow molding products can be continuously and efficiently cooled in the conveying process through the air boxes, the conveyor, the air injection system, the air curtain, the copper pipes and the water circulation system; the internal temperature of the plastic product can be rapidly reduced after the plastic product is separated from the mold, so that the interior of the plastic product is rapidly cured, the deformation risk is reduced, and the production quality and efficiency of the product are improved.

Description

Technical Field

[0001] The present application relates to the technical field of plastic production, and in particular to a cooling device for a blow molding machine. Background Art

[0002] In the blow molding process, plastic products are formed in the mold by blowing air, and then need to go through a cooling process to allow the product to reach a sufficient degree of solidification to ensure the stability of its shape, size and performance. In large-scale plastic product production lines, the surface of the plastic product can be air-cooled inside the mold so that it can be smoothly separated from the mold. When the blow-molded product is sent out of the mold, its internal temperature is often still high and the overall temperature has not been fully reduced. Since the plastic material inside the product has not yet been fully solidified, the product is in a relatively "soft" state at this time, and it is easy to be affected by external factors during transportation and deformed. This deformation may manifest as changes in product size, distortion of shape or uneven surface, which has a negative impact on the appearance and performance of the product.

[0003] In view of the above problems, a cooling device for a blow molding machine is now designed. Utility Model Content

[0004] The embodiment of the present application provides a cooling device for a blow molding machine to solve the problem in the related art that when the blow-molded product is sent out from the mold, its internal temperature is often still high, the plastic material has not yet completely solidified, and deformation occurs during the transportation process.

[0005] In a first aspect, a cooling device for a blow molding machine is provided, comprising: a group of air boxes and a conveyor, the conveyor being arranged between the group of air boxes and used to convey blow-molded products, the air boxes being provided with an air injection system, the air injection system being used to inject external air into the air boxes, the air boxes being provided with interconnected air curtains, the air curtains being used for air cooling of blow-molded products, and the air boxes being provided with a water cooling mechanism;

[0006] The water cooling mechanism includes a group of copper tubes and a water circulation system. The group of copper tubes are respectively arranged inside corresponding air boxes, and the water circulation system is used for water circulation cooling inside the copper tubes.

[0007] In some embodiments, the gas injection system includes an air supply pipe, one end of which is connected to the air box, and the other end of which is connected to an external air delivery pipeline.

[0008] In some embodiments, the air curtain is a vertical plate with a hollow interior, a group of the air curtains are provided with a plurality of air holes on opposite sides, and the air curtains are located above a side of the air box close to the conveyor.

[0009] In some embodiments, the water circulation system includes a cooling water tower and a refrigerator, one end of the copper tube is connected to the refrigerator outlet, the other end of the copper tube is connected to the cooling water tower inlet, and the cooling water tower outlet is connected to the refrigerator inlet.

[0010] In some embodiments, the conveyor includes a group of transmission wheels, a plurality of rollers, a conveyor belt, a reducer and a drive motor, a group of transmission wheels are relatively rotatably arranged between two groups of air boxes, the conveyor belt is arranged between the outer sides of two transmission wheels, a plurality of rollers are rotatably arranged between a group of air boxes and located on the inner side of the transmission belt, the reducer and the drive motor are both arranged on the air box, the output shaft of the drive motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to one side of the transmission wheel.

[0011] In some embodiments, an air suction mechanism is further included, and the air suction mechanism includes a bracket and a plurality of fans, the bracket is located above the conveyor, and the plurality of fans are sequentially arranged on the bracket.

[0012] An embodiment of the present application provides a cooling device for a blow molding machine. Through an air box, a conveyor, an air injection system, an air curtain, a copper tube and a water circulation system, the blow-molded product can be continuously and efficiently cooled during the transportation process. The internal temperature of the plastic product can drop rapidly after it leaves the mold, so that the plastic product can be quickly solidified inside, thereby improving the degree of solidification of the product and reducing the risk of deformation, thereby improving the production quality and efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 A schematic diagram of a three-dimensional structure provided in an embodiment of the present application;

[0015] Figure 2 A front cross-sectional view provided for an embodiment of the present application;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the copper tube provided in an embodiment of the present application.

[0017] In the figure: 1. air box; 2. conveyor; 3. air injection system; 4. air curtain; 41. air hole; 5. water cooling mechanism; 51. copper pipe; 52. water circulation system; 521. cooling water tower; 522. refrigerator; 6. exhaust mechanism; 61. bracket; 62. fan. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0019] The embodiment of the present application provides a cooling device for a blow molding machine, which can solve the problem in the related art that when the blow-molded product is sent out from the mold, its internal temperature is often still high, the plastic material has not yet completely solidified, and deformation occurs during the transportation process.

[0020] See also Figure 1-Figure 3 A cooling device for a blow molding machine comprises: a group of air boxes 1 and a conveyor 2, wherein the conveyor 2 is arranged between the group of air boxes 1 and is used to convey blow-molded products, the air box 1 is provided with an air injection system 3, the air injection system 3 is used to send external gas into the air box 1, the air box 1 is provided with interconnected air curtains 4, the air curtains 4 are used for air cooling of blow-molded products, and the air box 1 is provided with a water cooling mechanism 5;

[0021] The water cooling mechanism 5 includes a group of copper tubes 51 and a water circulation system 52 . The group of copper tubes 51 are respectively arranged inside the corresponding air box 1 , and the water circulation system 52 is used for water circulation cooling inside the copper tubes 51 .

[0022] A group of air boxes 1 are provided, and these air boxes 1 are fed with external gas through the gas injection system 3. When the gas enters the air box 1, it will be blown out through the interconnected air curtains 4 provided on the air box 1 to form an air curtain. The main function of this air curtain 4 is to air-cool the blow-molded product passing through, that is, to cool the surface of the product by the flowing air flow, so that the temperature of the surface of the product is rapidly reduced. The blow-molded product is sent out from the mold by the conveyor 2 and cooled by the air curtain 4. The design of the conveyor 2 ensures that the product can be cooled evenly and stably when passing through the air curtain 4.

[0023] At the same time, the copper tube 51 is arranged inside the air box 1, and water circulates inside the copper tube 51 through the water circulation system 52. When the water flows in the copper tube 51, it absorbs and takes away the heat inside the air box 1, thereby cooling the air box 1. Since the air box 1 is connected to the air curtain 4, the cooling effect of the air box 1 will also indirectly affect the temperature of the air flow blown out of the air curtain 4, further enhancing the cooling effect.

[0024] By combining air cooling and water cooling, the cooling device can continuously and efficiently cool the blow-molded products during the product conveying process. Air cooling is mainly aimed at the surface of the product, quickly reducing the surface temperature; while water cooling indirectly affects the temperature of the airflow in the air curtain by reducing the temperature of the air box, further promoting the cooling of the inside of the product. This dual cooling method can more effectively solve the problem of high internal temperature of blow-molded products, improve the degree of solidification of products, reduce the risk of deformation, and thus improve the production quality and efficiency of products.

[0025] The copper tube 51 in this embodiment is formed by welding a plurality of annular copper tubes, and the plurality of annular copper tubes are interconnected.

[0026] It can be understood that a plurality of pillars are provided at the bottom of the air box 1 in this embodiment.

[0027] The support pillar can control the height of the device to keep it level with the traction and pushing mechanism of the blow molding machine, so that the blow-molded plastic products can be pushed onto the conveyor 2 in sequence.

[0028] Specifically, Figure 1 As shown, the gas injection system 3 in this embodiment includes an air supply pipe, one end of which is connected to the air box 1, and the other end of which is connected to an external air delivery pipeline.

[0029] The working principle of the air injection system 3 is mainly to transport external air into the air box 1 through the air supply pipe, so as to achieve an air cooling effect on the blow-molded product.

[0030] The gas injection system 3 includes an air supply pipe, one end of which is connected to the air box 1, and the other end is connected to an external air delivery pipeline. The external air delivery pipeline is usually connected to an air compressor or other air source equipment to ensure that the required air flow and pressure can be provided stably and continuously.

[0031] When the cooling device starts working, the external air delivery duct starts to deliver air into the air supply pipe. Since one end of the air supply pipe is connected to the air box 1, the air can smoothly enter the air box. Inside the air box, the air is distributed and flows, and finally blown out in the form of airflow through the air curtain 4.

[0032] It is further explained that if Figure 2 As shown, the air curtain 4 in this embodiment is a vertical plate body with a hollow interior, a group of the air curtains 4 are provided with a plurality of air holes 41 on opposite sides, the air curtains 4 are located above the side of the air box 1 close to the conveyor 2, wherein the plurality of air holes 41 are distributed at equal distances.

[0033] The air curtain 4 is designed as a vertical plate, and its interior is hollow, so that the air curtain 4 can accommodate a large amount of air and achieve uniform distribution of air through its internal cavity structure. When the air injection system 3 sends external air into the air box 1, the air will enter the air curtain 4, and the air will flow to the outside from the air holes 41 on the air curtain 4. Since the air holes 41 are evenly distributed, when the air flows out from the air curtain 4, a uniform and stable airflow can be formed.

[0034] At the same time, the air curtain 4 is installed above the side of the air box 1 close to the conveyor 2. The relatively vertical air curtains 4 can form a relatively closed space, and the wind, dust or other pollutants on both sides of the conveyor 2 are not easy to directly contact the product surface, thereby ensuring the purity and stability of the cooling process.

[0035] Secondly, the height of the vertical air curtain 4 is adapted to the height of the product, so that it can cover the entire width or most of the surface of the product. This means that the airflow can fully and evenly cover the product without being easily interrupted or changed direction by external factors. This design ensures the continuity and consistency of the cooling effect.

[0036] In addition, due to its structural characteristics, the vertical air curtain 4 can also reduce the influence of heat convection and heat radiation to a certain extent. External heat is often transmitted in the form of heat convection and heat radiation, and the vertical air curtain 4 can effectively block the transfer of this heat and keep the temperature in the cooling area stable.

[0037] Specifically, Figure 1 As shown, the water circulation system 52 in this embodiment includes a cooling water tower 521 and a refrigerator 522, one end of the copper tube 51 is connected to the outlet of the refrigerator 522, the other end of the copper tube 51 is connected to the inlet of the cooling water tower 521, and the outlet of the cooling water tower 521 is connected to the inlet of the refrigerator 522, wherein the cooling water tower 521 is used to contain cooling water.

[0038] It should be noted that in this embodiment, one end of the copper tube 51 is connected to the outlet of the refrigerator 522 via a metal hose, the other end of the copper tube 51 is connected to the inlet of the cooling water tower 521 via a metal hose, and the outlet of the cooling water tower 521 is connected to the inlet of the refrigerator 522 via a metal hose, wherein the metal hose passes through the bottom of the conveyor 2.

[0039] In actual use, the cooling water inside the cooling water tower 521 enters the refrigerator 522. The function of the refrigerator 522 is to cool the cooling water to a lower temperature. Then, the cooling water flows out from the outlet of the refrigerator 522 and enters the copper tube 51. In this way, when the cooling water enters the copper tube 51, it can effectively absorb the heat inside the air box 1.

[0040] The copper tube 51 is arranged inside the air box 1, and the heat in the air box is taken away by the cooling water flowing inside the copper tube 51. As the cooling water flows in the copper tube 51, the temperature of the air box 1 and the air curtain 4 gradually decreases, which is beneficial to improving the air cooling effect. At the same time, the cooled air box 1 and the air curtain 4 can also cool the temperature of the area above the conveyor 2, forming a relatively low-temperature cooling area. In this low-temperature cooling area, the blow-molded product can obtain a more comprehensive and uniform cooling effect.

[0041] Subsequently, the cooling water that has absorbed the heat flows out from the other end of the copper tube 51 and enters the inlet of the cooling water tower 521. The cooling water tower 521 is a device for heat dissipation. It uses air convection and water evaporation to dissipate the heat in the cooling water into the atmosphere. In this way, the cooling water is cooled again in the cooling water tower 521. The cooling water after the cooling treatment of the cooling water tower 521 flows out from its outlet and returns to the inlet of the refrigerator 522 again, forming a closed cycle of cooling water. The refrigerator 522 continues to cool the cooling water to ensure that the cooling water can continue to effectively absorb the heat in the air box 1.

[0042] Through such a circulation process, the water circulation system 52 can continuously take away the heat in the air box 1 and dissipate it into the atmosphere, thereby keeping the temperature inside the air box at a relatively low level. This is not only conducive to improving the air cooling effect, but also can ensure that the blow molded products are fully cooled during the transportation process, reduce deformation and improve product quality.

[0043] It should be noted that if Figure 1 As shown, the conveyor 2 in this embodiment includes a group of transmission wheels, a plurality of rollers, a conveyor belt, a reducer and a driving motor. A group of transmission wheels are relatively rotatably arranged between two groups of air boxes 1, the conveyor belt is arranged between the outer sides of two transmission wheels, a plurality of rollers are rotatably arranged between a group of air boxes 1 and are located on the inner side of the transmission belt, the reducer and the driving motor are both arranged on the air box 1, the output shaft of the driving motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to one side of the transmission wheel.

[0044] The conveyor 2 is responsible for delivering the blow-molded product from the mold and cooling it through the cooling device.

[0045] In actual operation, the driving motor serves as the power source of the conveyor 2. It starts working after receiving the start signal. The output shaft of the motor is connected to the input shaft of the reducer. In this way, when the motor rotates, it drives the reducer to rotate together. The function of the reducer is to reduce the speed of the motor and increase the output torque. When the reducer transmits power to the transmission wheel on one side, due to the relative rotation relationship between the transmission wheels, the transmission wheel on the other side will also rotate at the same speed. When the transmission wheel rotates, the conveyor belt will also move, so that it can stably carry the blow-molded products and transfer them from one position to another.

[0046] The main function of several rollers is to support the conveyor belt and provide necessary support and guidance when the conveyor belt moves. They rotate as the conveyor belt moves, ensuring that the conveyor belt can run smoothly and reducing the resistance caused by friction.

[0047] As a preferred embodiment, the present embodiment further includes an exhaust mechanism 6, which includes a bracket 61 and a plurality of fans 62, wherein the bracket 61 is located above the conveyor 2, and the plurality of fans 62 are sequentially arranged on the bracket 61.

[0048] When the air extraction mechanism 6 starts to work, the fan 62 will rotate to generate airflow, and the direction of the airflow is mainly toward the space above the conveyor 2, including the cooled air curtain 4 and the surface of the blow-molded product.

[0049] The airflow generated by the fan 62 has two main functions: one is to accelerate the convection exchange between the cooling airflow blown out by the air curtain 4 and the surface of the blow-molded product, thereby improving the cooling efficiency; the other is to draw away the hot air above the conveyor 2 to form a relatively low-temperature working environment, further reducing the impact of hot air on the cooling effect of the product.

[0050] Through the operation of the air extraction mechanism 6, the water circulation system is not only enhanced, but also the working environment is improved, which helps to improve the cooling effect, reduce the deformation and cracking of the blow molded products, and also helps to improve the overall operation efficiency of the production line.

[0051] Specifically, a cooling water tower, also known as a main engine water tower, is a device used to reduce water temperature. Its working principle is based on the principle of water evaporation and convection heat transfer. The cooling water tower transports hot water into the tower through a water circulation system, exchanges heat with the atmosphere in the tower to reduce the temperature of the hot water, and then returns the cooled water to the production equipment for continued circulation. The cooling water tower is also equipped with a fan to draw the atmosphere into the cooling tower, increase air flow, and improve heat exchange efficiency. The airflow generated by the fan passes through the packing layer, exchanges heat with the water film, and takes away the heat. This is a prior art and will not be described here.

[0052] In addition, the main function of a refrigerator is to cool various media or objects that need to be cooled. Specifically, the refrigerator compresses the refrigerant gas from a low-temperature and low-pressure state to a high-temperature and high-pressure state through a cyclic refrigeration process, and then liquefies and releases heat in the condenser. After throttling and reducing the pressure through the expansion valve, it evaporates and absorbs heat in the evaporator, thereby achieving a cooling effect. This cooling process can be applied to a variety of occasions and objects. In industry and life, refrigerators are often used to reduce the temperature of water, turning it from hot water to cold water, which is used to cool equipment, make cold drinks, or provide a comfortable indoor environment. But in addition to water, refrigerators can also cool other liquids or gases, such as for cooling media in specific industrial processes, or maintaining a low-temperature environment in a laboratory. This is a prior art and will not be repeated here.

[0053] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0054] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0055] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A cooling device for a blow molding machine, characterized in that: include: A group of air boxes (1) and a conveyor (2), wherein the conveyor (2) is arranged between the group of air boxes (1) and is used to convey blow-molded products, the air box (1) is provided with an air injection system (3), the air injection system (3) is used to inject external air into the air box (1), the air box (1) is provided with interconnected air curtains (4), the air curtains (4) are used to air cool the blow-molded products, and the air box (1) is provided with a water cooling mechanism (5); The water cooling mechanism (5) comprises a group of copper tubes (51) and a water circulation system (52); the group of copper tubes (51) are respectively arranged inside corresponding air boxes (1); and the water circulation system (52) is used for water circulation cooling inside the copper tubes (51).

2. A cooling device for a blow molding machine according to claim 1, characterized in that: The gas injection system (3) comprises an air supply pipe, one end of which is connected to the air box (1), and the other end of which is connected to an external air delivery pipeline.

3. A cooling device for a blow molding machine according to claim 1, characterized in that: The air curtain (4) is a vertical plate body with a hollow interior. A group of the air curtains (4) are provided with a plurality of air holes (41) on opposite sides. The air curtains (4) are located above the side of the air box (1) close to the conveyor (2).

4. A cooling device for a blow molding machine according to claim 1, characterized in that: The water circulation system (52) comprises a cooling water tower (521) and a refrigerator (522); one end of the copper tube (51) is connected to an outlet of the refrigerator (522); the other end of the copper tube (51) is connected to an inlet of the cooling water tower (521); and the outlet of the cooling water tower (521) is connected to an inlet of the refrigerator (522).

5. A cooling device for a blow molding machine according to claim 1, characterized in that: The conveyor (2) comprises a group of transmission wheels, a plurality of rollers, a conveyor belt, a reducer and a drive motor, wherein the group of transmission wheels is relatively rotatably arranged between two groups of air boxes (1), the conveyor belt is arranged between the outer sides of the two transmission wheels, the plurality of rollers are rotatably arranged between the group of air boxes (1) and are located on the inner side of the transmission belt, the reducer and the drive motor are both arranged on the air box (1), the output shaft of the drive motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to one side of the transmission wheel.

6. A cooling device for a blow molding machine according to claim 1, characterized in that: It also comprises an air extraction mechanism (6), the air extraction mechanism (6) comprising a bracket (61) and a plurality of fans (62), the bracket (61) being located above the conveyor (2), and the plurality of fans (62) being arranged in sequence on the bracket (61).

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