Cold blank injection molding machine with rapid cooling function

Abstract

The utility model relates to the field of shoemaking equipment, in particular to a cold blank injection molding machine with a rapid cooling function, which comprises a rack, an upper cooling plate, a lower cooling plate, a water inlet pipe, a water return pipe, a cold connecting pipe, a hot connecting pipe and a water supply and return mechanism, the upper cooling plate is arranged in the rack in a manner of moving up and down, and the lower cooling plate is positioned right below the upper cooling plate; circulating cooling runners and temperature measuring holes are formed in the upper cooling plate and the lower cooling plate, and the temperature measuring holes are formed beside the circulating cooling runners; a water inlet and a water outlet are formed in the circulating cooling flow channel and are respectively communicated with a water inlet pipe and a water return pipe; a water inlet pipe of the upper cooling plate is communicated with the cold connecting pipe, and a water return pipe of the upper cooling plate is communicated with the hot connecting pipe; the water supply and return mechanism is connected with the cold connecting pipe, the hot connecting pipe and a water inlet pipe and a water return pipe of the lower cooling plate, temperature monitoring and rapid cooling can be conducted on the upper cooling plate and the lower cooling plate, and the problems that the cooling efficiency of the cold blank forming machine is poor, and the quality of cold blank products is uneven are solved.

Description

Technical Field

[0001] This utility model relates to the field of shoemaking equipment, and in particular to a cold blank injection molding machine with rapid cooling function. Background Technology

[0002] Existing cold injection molding machines have cooling channels on their cooling plates, which are connected to water pipes. During injection, the mold's insole primarily relies on the continuous circulation of cooling water from the cooling zone through these channels to cool the raw material and ultimately shape it. Because the cooling water in the cooling zone is circulated, its temperature gradually increases. Since the mold is also constantly being circulated, its temperature also gradually rises, reducing the cooling efficiency of the cooling water and failing to meet production demands. This also affects the yield of cold-formed products. Furthermore, when there is a significant temperature difference between the upper and lower cooling plates, or a large temperature difference between the molds during two molding processes, the quality of each molding process using the same mold becomes inaccurate, resulting in uneven quality of the final cold-formed products.

[0003] In view of the above, this utility model designs a cold preform injection molding machine with rapid cooling function, which can monitor the temperature of the upper and lower cooling plates and cool them rapidly, thereby improving the yield of cold preform products and solving the problems of poor cooling efficiency and uneven quality of cold preform products in cold preform molding machines. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a cold blank injection molding machine with rapid cooling function.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A cold preform injection molding machine with rapid cooling function includes a frame, an upper cooling plate, a lower cooling plate, a water inlet pipe, a water return pipe, a cold connection pipe, a hot connection pipe, and a water supply and return mechanism. The upper cooling plate is movable up and down within the frame, and the lower cooling plate is located directly below the upper cooling plate. Both the upper and lower cooling plates are provided with circulating cooling channels and temperature measuring holes, with the temperature measuring holes located beside the circulating cooling channels. The circulating cooling channels are provided with water inlets and outlets, which are respectively connected to the water inlet pipe and the water return pipe. The water inlet pipe of the upper cooling plate is connected to the cold connection pipe, and the water return pipe of the upper cooling plate is connected to the hot connection pipe. The water supply and return mechanism is connected to the cold connection pipe, the hot connection pipe, and the water inlet and water return pipes of the lower cooling plate.

[0007] Preferably, the lengths of the cold connection pipe and the hot connection pipe are greater than the maximum distance between the upper and lower cooling plates.

[0008] Preferably, both the upper and lower cooling plates are provided with temperature measuring holes. The water inlets of the upper and lower cooling plates are located on the same side of the frame and are staggered. The temperature measuring hole of the lower cooling plate is located on the first side of the lower cooling plate where the water inlet is located, and the temperature measuring hole of the upper cooling plate is located on the second side of the upper cooling plate opposite to the first side.

[0009] Preferably, the circulating cooling channel includes several longitudinal channels and transverse channels, with the longitudinal channels spaced apart within the upper or lower cooling plate, and two adjacent longitudinal channels connected by the transverse channels.

[0010] Preferably, the water supply and return mechanism includes a cold water pipe, a hot water pipe, and a solenoid valve. The solenoid valve is connected to the cold water pipe, the cold water pipe is connected to the inlet pipe and the cold connection pipe of the lower cooling plate, and the hot water pipe is connected to the return pipe and the hot connection pipe of the lower cooling plate.

[0011] Preferably, the system also includes a first water distribution valve and a second water distribution valve. Both the first and second water distribution valves are provided with an inlet pipe interface, a cold water connection pipe interface, a return water interface, and a hot water connection pipe interface. The inlet pipe interface and the return water interface are connected to the inlet pipe and the return water pipe, respectively. The two ends of the cold water connection pipe are connected to the cold water connection pipe interfaces of the first and second water distribution valves, respectively. The two ends of the hot water connection pipe are connected to the hot water connection pipe interfaces of the first and second water distribution valves, respectively. The first water distribution valve also includes a cold water pipe interface and a hot water pipe interface, which are connected to the cold water pipe and the hot water pipe, respectively.

[0012] Preferably, the assembly also includes an upper plate, a middle plate, a mold opening and closing cylinder, a lower plate, and a booster cylinder. The upper plate is located at the top of the frame; the middle plate is located in the middle of the frame, and an upper cooling plate and a second water distribution valve are fixedly installed on the bottom surface of the middle plate; the mold opening and closing cylinder is installed on the upper plate, connected to the middle plate, and drives the middle plate to move up and down; the lower plate is located at the bottom of the frame, and a booster cylinder and a first water distribution valve are installed on the top surface of the lower plate; a lower cooling plate is located above the booster cylinder.

[0013] Preferably, the machine also includes a mold adjustment drive motor and adjusting wheels. The frame includes columns, and the adjusting wheels are located at the four corners of the upper plate and are movably connected to the columns. The mold adjustment drive motor is installed on the top surface of the upper plate and is connected to one of the adjusting wheels by a chain. The two adjusting wheels located at two adjacent corners of the upper plate are connected by a chain. The mold adjustment drive motor drives the four adjusting wheels to rotate synchronously, thereby moving the upper plate up and down along the direction of the columns.

[0014] Preferably, the system also includes a crank arm mechanism, which includes a connecting plate and several tie rods. The connecting plate is connected to the piston rod of the mold opening and closing cylinder. The tie rods are arranged in pairs on both sides of the connecting plate, with one end of the tie rod hinged to the connecting plate and the other end hinged to the upper plate or the middle plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) The cold blank injection molding machine with rapid cooling function proposed in this application has a structural design of temperature measuring holes, water inlet pipe, water return pipe, cold connection pipe and hot connection pipe on the upper and lower cooling plates, which facilitates temperature monitoring and temperature control of the upper and lower cooling plates. Moreover, the water inlet pipe, water return pipe and the pipes connected to them are separated into hot and cold parts to improve cooling efficiency and keep the temperature of the upper and lower cooling plates always below the set temperature, so that the overall temperature of the upper mold and the lower mold is kept relatively constant and close, ensuring that the upper and lower positions of the cold blank product are formed synchronously and improving the yield of the cold blank product.

[0017] (2) The cold connection pipe and hot connection pipe of the cold blank injection molding machine with rapid cooling function proposed in this application can be bent and set on the outside of the column of the frame. The length of the cold connection pipe and the length of the hot connection pipe are both greater than the maximum distance between the upper cooling plate and the lower cooling plate, so that one end of the cold connection pipe and the hot connection pipe can move up and down with the upper cooling plate. It can also avoid the cold connection pipe and the hot connection pipe affecting the mold opening and closing action, and facilitate the supply of cooling water to the upper cooling plate for cooling. Furthermore, water is supplied to the lower cooling plate and the upper cooling plate through the first water distribution valve, the second water distribution valve, the water inlet pipe, the water return pipe, the cold connection pipe and the hot connection pipe respectively. The pipeline design is simple and practical, with cold and hot separation and upper and lower separation, resulting in high cooling efficiency.

[0018] (3) In the cold blank injection molding machine with rapid cooling function proposed in this application, the water inlet of the upper cooling plate and the water inlet of the lower cooling plate are located on the same side of the frame and are staggered, so that the flow direction of the cooling water in the circulating cooling channel of the upper cooling plate and the lower cooling plate is opposite, thereby further improving the cooling efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0020] Figure 2 The diagram shows the overall structure of an embodiment of this application, as well as cross-sectional views of the upper and lower molds.

[0021] Figure 3 This is a cross-sectional view of the upper cooling plate according to an embodiment of this application;

[0022] Figure 4 This is a cross-sectional view of the lower cooling plate according to an embodiment of this application;

[0023] Reference numerals: 1. Frame; 11. Upper plate; 12. Middle plate; 13. Lower plate; 14. Mold opening and closing cylinder; 15. Pressure boosting cylinder; 16. Column; 21. Upper cooling plate; 22. Lower cooling plate; 31. Upper mold; 32. Lower mold; 411. Water inlet pipe; 412. Cold connection pipe; 421. Water return pipe; 422. Hot connection pipe; 43. First water distribution valve; 44. Second water distribution valve; 5. Circulating cooling channel; 51. Water inlet; 52. Water outlet; 53. Longitudinal channel; 54. Transverse channel; 6. Temperature measuring hole; 7. Water supply and return mechanism; 71. Cold water pipe; 72. Hot water pipe; 73. Solenoid valve; 81. Mold adjustment drive motor; 82. Adjusting wheel; 9. Crank arm mechanism; 91. Connecting plate; 92. Tie rod. Detailed Implementation

[0024] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. The accompanying drawings are merely illustrative to facilitate understanding of the present invention, and their specific proportions can be adjusted according to design requirements. The vertical relationships of relative elements and the definitions of front / back in the graphics described herein should be understood by those skilled in the art to refer to the relative positions of the components; therefore, they can all be flipped to present the same component, and all of this should fall within the scope disclosed in this specification.

[0025] refer to Figures 1 to 4This application proposes a cold preform injection molding machine with rapid cooling function, including a frame 1, an upper cooling plate 21, a lower cooling plate 22, a water inlet pipe 411, a water return pipe 421, a cold connection pipe 412, a hot connection pipe 422, and a water supply and return mechanism 7. The upper cooling plate 21 is movable up and down within the frame 1, and the lower cooling plate 22 is located directly below the upper cooling plate 21. The upper mold 31 is installed on the bottom surface of the upper cooling plate 21, and the lower mold 32 is installed on the top surface of the lower cooling plate 22, opposite to the upper mold 31. Both the upper cooling plate 21 and the lower cooling plate 22 are provided with circulating cooling channels 5 and temperature measuring holes 6. The temperature measuring holes 6 are located beside the circulating cooling channels 5. Through the upper cooling plate 21 and the lower cooling plate 22, the water supply and return mechanism 7 is provided. Temperature measuring holes 6 are provided on both the upper and lower cooling plates 21 and 22 to monitor their temperatures. When the temperature is higher than the set temperature, cooling water can be introduced into the circulating cooling channel 5 of the upper or lower cooling plate 21 or 22 to cool them quickly, thus preventing the upper and lower cooling plates 21 and 22 from being in an excessively high temperature state for a long time. In addition, the water inlet pipe 411, water return pipe 421 and the pipes connected to them are separated into hot and cold parts to improve cooling efficiency and keep the temperature of the upper and lower cooling plates 21 and 22 below the set temperature. This keeps the temperature of the upper mold 31 and the lower mold 32 relatively constant, ensuring that the upper and lower positions of the cold blank are formed synchronously and improving the yield of the cold blank. The circulating cooling channel 5 is provided with an inlet 51 and an outlet 52, which are connected to the inlet pipe 411 and the return pipe 421, respectively. The inlet pipe 411 of the upper cooling plate 21 is connected to the cold connection pipe 412, and the return pipe 421 of the upper cooling plate 21 is connected to the hot connection pipe 422. The water supply and return mechanism 7 is connected to the cold connection pipe 412, the hot connection pipe 422, and the inlet pipe 411 and the return pipe 421 of the lower cooling plate 22. Through the structural design of the inlet pipe 411 and the return pipe 421 of the upper cooling plate 21 and the lower cooling plate 22, it is convenient to pass cooling water through the upper cooling plate 21 and the lower cooling plate 22 to control the temperature, thereby avoiding the temperature of the upper cooling plate 21 and the lower cooling plate 22 from being too high, improving the cooling efficiency, and ensuring that the upper and lower positions of the cold blank are formed synchronously, thus improving the yield of the cold blank. Specifically, the lengths of the cold connecting pipe 412 and the hot connecting pipe 422 are greater than the maximum distance between the upper cooling plate 21 and the lower cooling plate 22, so that one end of the cold connecting pipe 412 and the hot connecting pipe 422 can move up and down on the upper cooling plate 21 to avoid the cold connecting pipe 412 and the hot connecting pipe 422 affecting the mold opening and closing action.

[0026] In a specific embodiment, refer to Figures 2 to 4The circulating cooling channel 5 includes several longitudinal channels 53 and transverse channels 54. The longitudinal channels 53 are spaced apart in the upper cooling plate 21 or lower cooling plate 22, and two adjacent longitudinal channels 53 are connected through the transverse channels 54 so that the cooling water can flow through the entire upper cooling plate 21 or lower cooling plate 22. The cooling water flows from the inlet 51 through the circulating cooling channel 5 and then flows out from the outlet 52. During the process of the cooling water flowing from the inlet 51 to the outlet 52, it carries away the heat absorbed by the upper cooling plate 21 or lower cooling plate 22, thereby reducing the temperature of the upper cooling plate 21 or lower cooling plate 22, so that the heat of the upper mold 31 or lower mold 32 can be quickly transferred to the upper cooling plate 21 or lower cooling plate 22. Furthermore, the water inlets 51 of the upper cooling plate 21 and the lower cooling plate 22 are located on the same side of the frame 1 and are staggered to ensure that the cooling water flows in opposite directions within the circulating cooling channels 5 of the upper cooling plate 21 and the lower cooling plate 22. Specifically, Figure 3 and Figure 4 The diagram shows cross-sections of the upper cooling plate 21 and the lower cooling plate 22 taken from the same direction. (Refer to...) Figure 3 The water inlet 51 of the upper cooling plate 21 is located near the right side of the upper cooling plate 21, for reference. Figure 4 The water inlet 51 of the lower cooling plate 22 is close to the left side of the lower cooling plate 22. By setting the water inlets 51 of the upper cooling plate 21 and the lower cooling plate 22, the flow direction of the cooling water in the circulating cooling channels 5 of the upper cooling plate 21 and the lower cooling plate 22 is opposite. Figure 1 The middle frame 1 is equipped with two sets of upper cooling plates 21 and lower cooling plates 22. Taking the set of upper cooling plates 21 and lower cooling plates 22 on the right side as an example, the cooling water flows into the upper cooling plate 21 from the side near the middle of the frame 1 through the circulating cooling channel 5, and flows into the return pipe 421 of the upper cooling plate 21 from the outlet 52 near the outside of the frame 1. The cooling water flows into the lower cooling plate 21 from the inlet pipe 411 through the inlet 51 near the outside of the frame 1 through the circulating cooling channel 5, and flows into the return pipe 421 from the outlet 52 near the middle of the frame 1 through the lower cooling plate 21. This further improves the cooling efficiency, and the structure is ingenious and highly practical. The temperature measuring hole 6 of the lower cooling plate 22 is located on the first side where the water inlet 51 of the lower cooling plate 22 is located, and the temperature measuring hole 6 of the upper cooling plate 21 is located on the second side of the upper cooling plate 21 opposite to the first side. By setting the temperature measuring holes 6 of the upper cooling plate 21 and the lower cooling plate 22 on opposite sides, not only can the temperature of the upper cooling plate 21 and the lower cooling plate 22 be monitored individually, but also the temperature of the upper cooling plate 21 and the lower cooling plate 22 on both sides near the frame 1 can be monitored.

[0027] For details, please refer to Figure 1 and Figure 2The cold blank injection molding machine with rapid cooling function proposed in the embodiments of this application further includes an upper plate 11, a middle plate 12, a lower plate 13, a mold opening and closing cylinder 14, a pressure boosting cylinder 15, a first water distribution valve 43, and a second water distribution valve 44. The upper plate 11 is located on the upper part of the frame 1. The mold opening and closing cylinder 14 is installed on the upper plate 11 and connected to the middle plate 12 to drive the middle plate 12 to move up and down. The middle plate 12 is located in the middle of the frame 1, and an upper plate is fixedly installed on the bottom surface of the middle plate 12. Cooling plate 21 and second water distribution valve 44; lower plate 13 is located at the bottom of the frame 1, and a booster cylinder 15 and a first water distribution valve 43 are installed on the top surface of the lower plate 13; a lower cooling plate 22 is provided above the booster cylinder 15; the frame 1 includes a column 16, the first water distribution valve 43 and the second water distribution valve 44 are located beside the column 16, and the cold connection pipe 412 and the hot connection pipe 422 are located on the outside of the column 16; the water supply and return mechanism 7 includes a cold water pipe 71, a hot water pipe 72 and a solenoid valve 7. 3. The solenoid valve 73 is connected to the cold water pipe 71. The cold water pipe 71 is connected to the inlet pipe 411 and the cold connection pipe 412 of the lower cooling plate 22 respectively. The hot water pipe 72 is connected to the return pipe 421 and the heat connection pipe 422 of the lower cooling plate 22 respectively. The first water distribution valve 43 and the second water distribution valve 44 are both provided with an inlet pipe interface, a cold connection pipe interface, a return pipe interface and a heat connection pipe interface. The inlet pipe interface and the return pipe interface are connected to the inlet pipe 411 and the return pipe 421 respectively. The two ends of the cold connection pipe 412 are connected to the cold connection pipe interface of the first water distribution valve 43 and the cold connection pipe interface of the second water distribution valve 44 respectively. The two ends of the heat connection pipe 422 are connected to the heat connection pipe interface of the first water distribution valve 43 and the heat connection pipe interface of the second water distribution valve 44 respectively. Further, the first water distribution valve 43 also includes a cold water pipe 71 interface and a hot water pipe 72 interface. The cold water pipe 71 interface and the hot water pipe 72 interface are connected to the cold water pipe 71 and the hot water pipe 72 respectively. When the mold opening and closing cylinder 14 drives the middle plate 12 to move up and down, it drives the second water distribution valve 44 on the middle plate 12 to move up and down. One end of the cold connection pipe 412 and the hot connection pipe 422 connected to the second water distribution valve 44 moves up and down with the second water distribution valve 44.

[0028] For details, please refer to Figure 1 and Figure 2The cold blank injection molding machine with rapid cooling function proposed in this application also includes a mold adjustment drive motor 81, adjusting wheels 82 and a crank arm mechanism 9. The adjusting wheels 82 are located at the four corners of the upper plate 11 and are movably connected to the column 16. The mold adjustment drive motor 81 is installed on the top surface of the upper plate 11. The mold adjustment drive motor 81 is connected to one of the adjusting wheels 82 by a chain. A sprocket is provided on the outer side of the adjusting wheel 82. The two adjusting wheels 82 located at two adjacent corners of the upper plate 11 are connected by a chain. The mold adjustment drive motor 81 drives the four adjusting wheels 82 to rotate synchronously, thereby moving the upper plate 11 up and down along the direction of the column 16. When the mold opening and closing cylinder 14 is not working, the upper plate 11 is driven to move up and down along the direction of the column 16, thereby moving the middle plate 12 connected to the mold opening and closing cylinder 14 up and down, thereby changing the mold height between the middle plate 12 and the lower plate 13. The articulated arm mechanism 9 includes a connecting plate 91 and several tie rods 92. The connecting plate 91 is connected to the piston rod of the mold opening and closing cylinder 14. The tie rods 92 are arranged in pairs on both sides of the connecting plate 91. One end of the tie rod 92 is hinged to the connecting plate 91, and the other end is hinged to the upper plate 11 or the middle plate 12. When the mold opening and closing cylinder 14 is not working, the middle plate 12, the upper plate 11, and the mold opening and closing cylinder 14 on the upper plate 11 move synchronously. When the mold opening and closing cylinder 14 is working, the tie rods 92 arranged in pairs on both sides of the connecting plate 91 provide the same pulling force toward the upper plate 11 or pushing force toward the lower plate 13 to both sides of the middle plate 12, so that the middle plate 12 moves in the vertical direction.

[0029] The following describes a specific working process to further illustrate the cold blank injection molding machine with rapid cooling function proposed in this application.

[0030] Before the mold opening and closing operation, the mold adjustment drive motor 81 drives four adjusting wheels 82 to rotate synchronously, causing the upper plate 11 to move up and down along the column 16, which in turn causes the middle plate 12 to move up and down. This changes the distance between the middle plate 12 and the lower plate 13, and between the upper cooling plate 21 and the lower cooling plate 22, during mold closing, thus meeting the installation requirements of upper molds 31 and lower molds 32 of different specifications. The lengths of the cold connection pipe 412 and the hot connection pipe 422 are always greater than the maximum distance between the upper cooling plate 21 and the lower cooling plate 22, and the cold connection pipe 412 and the hot connection pipe 422 are located on the outside of the column 16 to avoid affecting the mold opening and closing operation.

[0031] During the mold closing action, the mold adjustment drive motor 81 is in a non-working state, and the relative positions of the adjusting wheel 82 and the upper plate 11 with the column 16 do not change. The piston rod of the mold opening and closing cylinder 14 extends, driving the connecting plate 91 to move downward along the direction of the column 16. One end of the pull rod 92 moves downward accordingly, while the other end generates a rotational motion, driving the pull rod 92 to move obliquely outward, causing the middle plate 12, the upper cooling plate 21, the upper mold 31, and the second water distribution valve 44 to move downward, thereby causing the upper mold 31 to close with the lower mold 32, and the cold connection pipe 412 and the hot connection pipe 422 to bend; the mold opening action is the opposite of the mold closing action.

[0032] During the cold forming process, if the temperature measuring hole 6 detects that the temperature of the upper cooling plate 21 or the lower cooling plate 22 exceeds the set temperature, the solenoid valve 73 is opened to introduce cooling water into the cooling water pipe 71. When the temperature of the upper cooling plate 21 is too high, the cooling water flows sequentially through the first cooling water distribution valve 43, the cooling connection pipe 412, the second cooling water distribution valve 44, the water inlet pipe 411 of the upper cooling plate 21, the circulating cooling channel 5 of the upper cooling plate 21, the return water pipe 421 of the upper cooling plate 21, and the second cooling water distribution valve 73. Water valve 44, heat connection pipe 422, first water distribution valve 43 and hot water pipe 72, cooling water absorbs heat from upper cooling plate 21 and recovers it; when the temperature of lower cooling plate 22 is too high, cooling water flows sequentially through first water distribution valve 43, water inlet pipe 411 of lower cooling plate 22, circulating cooling channel 5 of lower cooling plate 22, return water pipe 421 of lower cooling plate 22, first water distribution valve 43 and hot water pipe 72, cooling water absorbs heat from lower cooling plate 22 and recovers it. By independently monitoring the temperature of the upper cooling plate 21 and the lower cooling plate 22, the temperature of the upper cooling plate 21 and the lower cooling plate 22 that are too high can be quickly reduced in time, so that the temperature of the upper cooling plate 21 and the lower cooling plate 22 can always be kept below the set temperature. This allows the heat from the upper mold 31 or the lower mold 32 to be quickly transferred to the upper cooling plate 21 or the lower cooling plate 22, and avoids the continuous rise in temperature of the upper cooling plate 21 and the lower cooling plate 22 from affecting the cooling efficiency of the upper mold 31 and the lower mold 32. This improves the yield of cold blank products and solves the problems of poor cooling efficiency and uneven quality of cold blank products in cold blank forming machines.

[0033] The above embodiments are only used to further illustrate the technical solution of this utility model, but this utility model is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of the technical solution of this utility model.

Claims

1. A cold parison injection molding machine having a rapid cooling function, characterized by: The application relates to a cooling device for a die-casting machine, which comprises a frame, an upper cooling plate, a lower cooling plate, a water inlet pipe, a water return pipe, a cold connection pipe, a hot connection pipe and a water supply and return mechanism, wherein the upper cooling plate is movably arranged in the frame and the lower cooling plate is arranged directly below the upper cooling plate; a circulating cooling flow channel and a temperature measuring hole are arranged in the upper cooling plate and the lower cooling plate, and the temperature measuring hole is arranged beside the circulating cooling flow channel; a water inlet and a water outlet are arranged on the circulating cooling flow channel, and the water inlet and the water outlet are communicated with the water inlet pipe and the water return pipe respectively; the water inlet pipe of the upper cooling plate is communicated with the cold connection pipe, and the water return pipe of the upper cooling plate is communicated with the hot connection pipe; and the water supply and return mechanism is connected with the cold connection pipe, the hot connection pipe, the water inlet pipe of the lower cooling plate and the water return pipe of the lower cooling plate.

2. The cold parison injection molding machine with a rapid cooling function according to claim 1, characterized in that: The length of the cold connection pipe and the length of the hot connection pipe are greater than the maximum distance between the upper cooling plate and the lower cooling plate.

3. The cold parison injection molding machine with a rapid cooling function according to claim 1, characterized in that: Temperature measuring holes are arranged on the upper cooling plate and the lower cooling plate, the water inlets of the upper cooling plate and the lower cooling plate are arranged on the same side of the frame and are staggered, the temperature measuring hole of the lower cooling plate is arranged on a first side of the lower cooling plate where the water inlet is arranged, and the temperature measuring hole of the upper cooling plate is arranged on a second side of the upper cooling plate which is opposite to the first side.

4. The cold parison injection molding machine having a rapid cooling function according to claim 1, characterized in that: The circulating cooling flow channel comprises a plurality of longitudinal flow channels and transverse flow channels, the longitudinal flow channels are arranged in the upper cooling plate or the lower cooling plate at intervals, and two adjacent longitudinal flow channels are communicated through a transverse flow channel.

5. The cold parison injection molding machine having a rapid cooling function according to claim 1, characterized in that: The water supply and return mechanism comprises a cold water pipe, a hot water pipe and an electromagnetic valve, the electromagnetic valve is connected with the cold water pipe, the cold water pipe is communicated with the water inlet pipe of the lower cooling plate and the cold connection pipe respectively, and the hot water pipe is communicated with the water return pipe of the lower cooling plate and the hot connection pipe respectively.

6. The cold parison injection molding machine with a rapid cooling function according to claim 5, characterized in that: The application further comprises a first water distribution valve and a second water distribution valve, the first water distribution valve and the second water distribution valve are provided with a water inlet pipe interface, a cold connection pipe interface, a water return pipe interface and a hot connection pipe interface, the water inlet pipe interface and the water return pipe interface are connected with the water inlet pipe and the water return pipe respectively, the two ends of the cold connection pipe are connected with the cold connection pipe interface of the first water distribution valve and the cold connection pipe interface of the second water distribution valve respectively, the two ends of the hot connection pipe are connected with the hot connection pipe interface of the first water distribution valve and the hot connection pipe interface of the second water distribution valve respectively, the first water distribution valve further comprises a cold water pipe interface and a hot water pipe interface, and the cold water pipe interface and the hot water pipe interface are connected with the cold water pipe and the hot water pipe respectively.

7. The cold parison injection molding machine with a rapid cooling function according to claim 6, characterized in that: The application further comprises an upper plate, a middle plate, a mold opening and closing oil cylinder, a lower plate and a pressure boosting oil cylinder, the upper plate is arranged on the upper part of the frame, the middle plate is arranged in the middle part of the frame, the bottom surface of the middle plate is fixedly provided with the upper cooling plate and the second water distribution valve, the mold opening and closing oil cylinder is arranged on the upper plate and connected with the middle plate to drive the middle plate to move up and down, the lower plate is arranged on the bottom part of the frame, the top surface of the lower plate is provided with the pressure boosting oil cylinder and the first water distribution valve, and the lower cooling plate is arranged above the pressure boosting oil cylinder.

8. The cold parison injection molding machine with a rapid cooling function according to claim 7, characterized in that: The die adjusting driving motor is installed on the top surface of the upper plate, the die adjusting driving motor is connected with one of the adjusting wheels through a chain, two adjusting wheels located at adjacent corners of the upper plate are connected through chains, and the four adjusting wheels are driven to rotate synchronously by the die adjusting driving motor to drive the upper plate to move up and down along the direction of the column.

9. The cold parison injection molding machine with a rapid cooling function according to claim 8, characterized in that: The curved arm mechanism comprises a connecting plate and a plurality of pull rods, the connecting plate is connected with the piston rod of the mold opening and closing oil cylinder, the pull rods are arranged in pairs on the two sides of the connecting plate, one end of the pull rod is hinged with the connecting plate, and the other end is hinged with the upper plate or the middle plate.

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