Multi-color injection molding equipment for plastic flowerpot processing

Abstract

According to the multi-color injection molding equipment for plastic flowerpot processing, a lower mold is put into a receiving groove, a driving air cylinder drives each injection molding box to drive one injection molding nozzle to be correspondingly inserted into one injection molding hole through a driving plate, a rotating motor and a rotating plate. And the injection molding liquid contained in each injection molding machine has the same color. And the injection molding machine performs injection molding treatment on the mold cavity through the injection molding pipe, the injection molding box and the injection molding nozzle. After injection molding is carried out for a period of time, the driving air cylinder drives each injection molding box to drive one injection molding nozzle to be correspondingly pulled out of one injection molding hole through the driving plate and the rotating motor. And the rotating motor drives each injection molding box through the rotating plate to drive one injection molding nozzle to rotate so as to change the position of each injection molding nozzle. And then the driving air cylinder drives each injection molding box to drive one injection molding nozzle to be correspondingly inserted into one injection molding hole through the driving plate, the rotating motor and the rotating plate. And by parity of reasoning, the positions of the injection molding nozzles can be changed for multiple times, so that colorful flowerpots can be manufactured.

Description

Technical Field

[0001] The invention relates to the field of masterbatch processing, in particular to multi-color injection molding equipment for processing plastic flower pots. Background Art

[0002] Plastics are widely used and are indispensable components in home appliances, automobiles, mobile phones, medical devices, and lighting appliances. As my country's economy has achieved sustained and stable growth, industries such as home appliances, automobiles, mobile phones, and medical devices have also achieved rapid development due to the good external environment. The development of downstream industries has further driven the demand for plastics. With the rapid development of the plastics industry and the continuous improvement of plastic performance, plastic parts have been more widely used. Plastic parts are replacing traditional metal parts in different fields. A well-designed plastic part can often replace multiple traditional metal parts, thereby simplifying the product structure and saving manufacturing costs. A flower pot is a kind of container for planting flowers. The flower pot is generally in the shape of an inverted truncated table or an inverted prism with a large mouth and a small bottom. Flower pots for planting flowers come in various forms and sizes. Flower producers or flower growers can choose flower pots according to the characteristics and needs of flowers and the characteristics of flower pots. Flower pots can be divided into many types according to different making materials. For example: fiberglass flower pots, sandstone flower pots, tile pots, purple sand pots, porcelain pots, plastic pots, etc. Among them, plastic basins are sought after by oxidation professionals because of their light material, durability, rich colors, low price and easy use.

[0003] However, traditional injection molding equipment, such as the technical solution to be protected by the patent with application number CN202210708371.X and invention name Injection molding device and injection molding machine, produces plastic flower pots with a single color, which cannot meet users' demand for diversified and differentiated colors of plastic flower pots. Summary of the invention

[0004] Based on this, it is necessary to provide a multi-color injection molding equipment for processing plastic flower pots to address the technical problem that the plastic flower pots produced by traditional injection molding equipment are of a single color and cannot meet the user's demand for diversified and differentiated colors of plastic flower pots.

[0005] A multi-color injection molding device for processing plastic flower pots, the multi-color injection molding device for processing plastic flower pots comprises: a driving mechanism, a plurality of injection molding mechanisms, an injection mold and a receiving platform; The driving mechanism comprises a driving cylinder, a driving plate, a rotating motor and a rotating plate; the driving cylinder is connected to an external connecting frame, and the driving cylinder is drivingly connected to the middle area of ​​the driving plate; the rotating motor is connected to a side of the driving plate facing away from the driving cylinder, and the output shaft of the rotating motor is drivingly connected to the middle area of ​​the rotating plate; a plurality of insertion holes are evenly opened around the rotating plate; each of the insertion holes is arranged in a circle; The injection molding mechanism comprises an injection molding machine, an injection molding tube, an injection molding box and an injection molding nozzle; the output end of the injection molding machine is connected with the input end of the injection molding tube, and the output end of the injection molding tube passes through the insertion hole and is connected with the injection molding box; the injection molding boxes in each of the injection molding mechanisms are evenly arranged on a side of the rotating plate facing away from the rotating motor; the injection molding nozzle is connected with the bottom of the injection molding box and is connected with the injection molding box; The injection mold comprises an upper mold, a mold core and a lower mold; the mold core is connected to the upper mold, the upper mold is detachably connected to the lower mold, and the upper mold, the mold core and the lower mold form a mold cavity; a plurality of injection holes are evenly opened on the upper mold, and each of the injection holes is arranged in a circle; each of the injection holes is connected to the mold cavity; the injection holes are adapted to the injection nozzles, and the driving cylinder drives each of the injection boxes through the driving plate, the rotating motor and the rotating plate to drive an injection nozzle to be inserted into a corresponding injection hole; The receiving platform is provided with a receiving groove, the receiving groove is matched with the lower mold, and the lower mold is received in the receiving groove and connected to the receiving platform.

[0006] In one embodiment, the rotating motor is a stepping motor.

[0007] In one embodiment, the rotating motor is a servo motor.

[0008] In one embodiment, the driving plate is a rectangular plate structure.

[0009] In one embodiment, the driving plate is a circular plate-shaped structure.

[0010] In one embodiment, the rotating plate is a circular plate structure.

[0011] In one embodiment, the injection molding mechanism further includes a leak-proof component, which is arranged on the injection molding nozzle, and the leak-proof component includes a connecting plate, an extrusion plate, a leak-proof cover and two elastic units; the connecting plate is sleeved on the injection molding nozzle and connected to the injection molding nozzle; sliding holes are provided on both sides of the connecting plate, and the two elastic units are respectively arranged on both sides of the connecting plate; the elastic unit includes a limit plate, a sliding column and a compression spring; the sliding column is adapted to the sliding hole, the sliding column is inserted into the sliding hole and is slidably connected to the connecting plate; One end of the sliding column close to the injection box is connected to the limit plate, and one end of the sliding column away from the limit plate is connected to the extrusion plate; the compression spring is adapted to the sliding column, the compression spring is sleeved on the sliding column, one end of the compression spring is connected to the connecting plate, and the other end of the compression spring is connected to the extrusion plate; a sliding hole is provided on the extrusion plate, the sliding hole is adapted to the injection nozzle, the injection nozzle passes through the sliding hole and is slidably connected to the extrusion plate; the leak-proof cover is connected to a side of the extrusion plate facing away from the connecting plate.

[0012] In one embodiment, the sliding column is a cylindrical structure.

[0013] In one embodiment, the limiting plate is a circular plate structure.

[0014] In one of the embodiments, the multi-color injection molding equipment for processing plastic flower pots also includes a cooling mechanism; a cooling cavity is provided in the lower mold, and the cooling cavity wraps the mold cavity; heat exhaust nozzles are provided on both sides of the end of the lower mold close to the upper mold, and the two heat exhaust nozzles are connected to the cooling cavity; the heat exhaust nozzle is connected to an external drainage pipe; an injection hole is provided at the bottom of the lower mold, and the injection hole is connected to the cooling cavity; a through hole is provided at the bottom of the receiving groove; the cooling mechanism includes a cold water tank, a liquid level sensor, a water pump and a water pump; an injection valve is provided on the cold water tank; the liquid level sensor is arranged in the cold water tank, and the water pump is arranged in the cold water tank, and the output end of the water pump is connected to the input end of the water pump; the output end of the water pump passes through the through hole and is inserted into the injection hole and is connected to the lower mold. During the operation of the multi-color injection molding equipment for processing plastic flower pots, the lower mold is placed in the receiving groove, and the upper mold is placed on the lower mold. The upper mold, the mold core and the lower mold form a mold cavity. The driving cylinder drives each injection molding box to drive an injection nozzle to be inserted into an injection hole through the driving plate, the rotating motor and the rotating plate. The injection liquid contained in each injection molding machine has the same color. The injection molding machine performs injection molding into the mold cavity through the injection molding tube, the injection molding box and the injection nozzle. After a period of injection molding, the driving cylinder drives each injection molding box to drive an injection nozzle to be pulled out from an injection hole through the driving plate, the rotating motor and the rotating plate. The rotating motor drives each injection molding box to drive an injection nozzle to rotate through the rotating plate to change the position of each injection nozzle. Then the driving cylinder drives each injection molding box to drive an injection nozzle to be inserted into an injection hole through the driving plate, the rotating motor and the rotating plate. By analogy, the position of each injection nozzle can be changed multiple times to produce colorful flower pots. The plastic flower pots produced by the multi-color injection molding equipment for processing plastic flower pots are rich in colors and can meet the user's demand for diversified and differentiated colors of plastic flower pots. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a multi-color injection molding device for processing plastic flower pots in one embodiment; Figure 2 It is a partial structural schematic diagram of a multi-color injection molding device for processing plastic flower pots in one embodiment; Figure 3 It is a partial structural schematic diagram of a multi-color injection molding device for processing plastic flower pots in one embodiment. DETAILED DESCRIPTION

[0016] In order to make the above-mentioned purpose, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth so as to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or position relationship shown in the accompanying drawings, only for the convenience of describing the present invention 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 of the present invention.

[0017] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0018] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0021] Please also read Figures 1 to 3 The present invention provides a multi-color injection molding device 10 for processing plastic flower pots. The multi-color injection molding device 10 for processing plastic flower pots includes: a driving mechanism 100, a plurality of injection molding mechanisms 200, an injection mold 300 and a receiving platform 400.

[0022] The driving mechanism 100 includes a driving cylinder 110, a driving plate 120, a rotating motor 130 and a rotating plate 140. The driving cylinder 110 is connected to an external connecting frame, and the driving cylinder 110 is drivingly connected to the middle area of ​​the driving plate 120. In the present embodiment, the rotating motor 130 is a stepping motor. In another embodiment, the rotating motor 130 is a servo motor. The rotating motor 130 is connected to a side of the driving plate 120 facing away from the driving cylinder 110, and in the present embodiment, the driving plate 120 is a rectangular plate-like structure. In another embodiment, the driving plate 120 is a circular plate-like structure. The output shaft of the rotating motor 130 is drivingly connected to the middle area of ​​the rotating plate 140. In the present embodiment, the rotating plate 140 is a circular plate-like structure. A plurality of insertion holes 101 are evenly arranged around the rotating plate 140. Each insertion hole 101 is arranged in a circle.

[0023] The injection molding mechanism 200 includes an injection molding machine 210, an injection molding tube 220, an injection molding box 230, and an injection molding nozzle 240. The output end of the injection molding machine 210 is connected to the input end of the injection molding tube 220, and the output end of the injection molding tube 220 passes through the insertion hole 101 and is connected to the injection molding box 230. The injection molding boxes 230 in each injection molding mechanism 200 are evenly arranged on a side of the rotating plate 140 facing away from the rotating motor 130. The injection molding nozzle 240 is connected to the bottom of the injection molding box 230 and is connected to the injection molding box 230.

[0024] The injection mold 300 includes an upper mold 310, a mold core 320, and a lower mold 330. The mold core 320 is connected to the upper mold 310, and the upper mold 310 and the lower mold 330 are detachably connected. The upper mold 310, the mold core 320, and the lower mold 330 form a mold cavity 301. A plurality of injection holes 302 are evenly opened on the upper mold 310, and each injection hole 302 is arranged in a circle. Each injection hole 302 is connected to the mold cavity 301. The injection hole 302 is adapted to the injection nozzle 240, and the driving cylinder 110 drives each injection box 230 through the driving plate 120, the rotating motor 130, and the rotating plate 140 to drive an injection nozzle 240 to be inserted into an injection hole 302.

[0025] A receiving groove 401 is formed on the receiving platform 400 . The receiving groove 401 is matched with the lower mold 330 . The lower mold 330 is received in the receiving groove 401 and connected to the receiving platform 400 .

[0026] In order to avoid leakage during the injection molding process, in one embodiment, the injection molding mechanism 200 also includes a leak-proof component 250, which is arranged on the injection nozzle 240. The leak-proof component 250 includes a connecting plate 251, an extrusion plate 252, a leak-proof cover 253 and two elastic units 254. The connecting plate 251 is sleeved on the injection nozzle 240 and connected to the injection nozzle 240. Sliding holes 201 are provided on both sides of the connecting plate 251, and two elastic units 254 are respectively arranged on both sides of the connecting plate 251. The elastic unit 254 includes a limit plate 255, a sliding column 256 and a compression spring 257. In this embodiment, the sliding column 256 is a cylindrical structure. The sliding column 256 is adapted to the sliding hole 201, and the sliding column 256 is inserted into the sliding hole 201 and is slidably connected to the connecting plate 251. One end of the sliding column 256 close to the injection box 230 is connected to the limit plate 255. In this embodiment, the limit plate 255 is a circular plate structure. One end of the sliding column 256 away from the limit plate 255 is connected to the extrusion plate 252. The compression spring 257 is adapted to the sliding column 256. The compression spring 257 is sleeved on the sliding column 256. One end of the compression spring 257 is connected to the connecting plate 251, and the other end of the compression spring 257 is connected to the extrusion plate 252. The extrusion plate 252 is provided with a sliding hole 202. The sliding hole 202 is adapted to the injection nozzle 240. The injection nozzle 240 passes through the sliding hole 202 and is slidably connected to the extrusion plate 252. The leakproof cover 253 is connected to the side of the extrusion plate 252 facing away from the connecting plate 251. When the driving cylinder 110 drives each injection box 230 through the driving plate 120, the rotating motor 130, and the rotating plate 140, an injection nozzle 240 is correspondingly inserted into an injection hole 302. The two compression springs 257 cover and squeeze the leak-proof cover 253 at the injection hole 302 through the squeezing plate 252 to seal the injection hole 302. In this way, the leak-proof component 250 can prevent leakage during the injection process, thereby increasing the working stability and safety of the injection mechanism 200.

[0027] In order to improve the production efficiency of the multi-color injection molding device 10 for processing plastic flower pots, in one embodiment, the multi-color injection molding device 10 for processing plastic flower pots also includes a cooling mechanism 500. A cooling cavity 203 is provided in the lower mold 330, and the cooling cavity 203 is arranged to wrap the mold cavity 301. Heat exhaust nozzles 331 are provided on both sides of the end of the lower mold 330 close to the upper mold 310, and the two heat exhaust nozzles 331 are connected to the cooling cavity 203. The heat exhaust nozzle 331 is connected to the external drainage pipe. An injection hole 204 is provided at the bottom of the lower mold 330, and the injection hole 204 is connected to the cooling cavity 203. A through hole 402 is provided at the bottom of the receiving groove 401. The cooling mechanism 500 includes a cold water tank 510, a liquid level sensor 520, a water pump 530 and a water pumping pipe 540. An injection valve 511 is provided on the cold water tank 510. The liquid level sensor 520 is arranged in the cold water tank 510, and the water pump 530 is arranged in the cold water tank 510. The output end of the water pump 530 is connected to the input end of the water pumping pipe 540. The output end of the water pumping pipe 540 passes through the perforation hole 402 and is inserted into the injection hole 204 and is connected to the lower mold 330. During the operation of the cooling mechanism 500, the water pump 530 injects the cold water in the cold water tank 510 into the cooling cavity 203 through the water pumping pipe 540, and the cold water cools the mold cavity 301 in the cooling cavity 203, thereby accelerating the cooling and molding of the product in the mold cavity 301. The water with increased temperature is discharged to the outside through two heat exhaust nozzles 331. In this way, the cooling mechanism 500 improves the production efficiency of the multi-color injection molding equipment 10 for processing plastic flower pots.

[0028] During the operation of the multi-color injection molding equipment 10 for processing plastic flower pots, the lower mold 330 is placed in the receiving groove 401, and the upper mold 310 is placed on the lower mold 330. The upper mold 310, the mold core 320 and the lower mold 330 form a mold cavity 301. The driving cylinder 110 drives each injection molding box 230 through the driving plate 120, the rotating motor 130, and the rotating plate 140 to drive an injection nozzle 240 to be inserted into an injection hole 302. The color of the injection liquid contained in each injection molding machine 210 is the same. The injection molding machine 210 performs injection molding into the mold cavity 301 through the injection molding tube 220, the injection molding box 230 and the injection nozzle 240. After a period of injection molding, the driving cylinder 110 drives each injection molding box 230 through the driving plate 120, the rotating motor 130, and the rotating plate 140 to drive an injection nozzle 240 to be pulled out from an injection hole 302. The rotating motor 130 drives each injection molding box 230 to drive an injection molding nozzle 240 to rotate through the rotating plate 140 to change the position of each injection molding nozzle 240. Then, the driving cylinder 110 drives each injection molding box 230 through the driving plate 120, the rotating motor 130, and the rotating plate 140 to drive an injection molding nozzle 240 to be inserted into a corresponding injection molding hole 302. By analogy, the position of each injection molding nozzle 240 can be changed multiple times to produce colorful flower pots. The plastic flower pots produced by the above-mentioned multi-color injection molding equipment 10 for processing plastic flower pots are rich in color and can meet the user's demand for the diversification and differentiation of the color of plastic flower pots. The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A multi-color injection molding equipment for processing plastic flower pots, characterized in that: include: A driving mechanism, several injection molding mechanisms, an injection mold and a receiving platform; The driving mechanism comprises a driving cylinder, a driving plate, a rotating motor and a rotating plate; the driving cylinder is connected to an external connecting frame, and the driving cylinder is drivingly connected to the middle area of ​​the driving plate; the rotating motor is connected to a side of the driving plate facing away from the driving cylinder, and the output shaft of the rotating motor is drivingly connected to the middle area of ​​the rotating plate; a plurality of insertion holes are evenly opened around the rotating plate; each of the insertion holes is arranged in a circle; The injection molding mechanism comprises an injection molding machine, an injection molding tube, an injection molding box and an injection molding nozzle; the output end of the injection molding machine is connected with the input end of the injection molding tube, and the output end of the injection molding tube passes through the insertion hole and is connected with the injection molding box; the injection molding boxes in each of the injection molding mechanisms are evenly arranged on a side of the rotating plate facing away from the rotating motor; the injection molding nozzle is connected with the bottom of the injection molding box and is connected with the injection molding box; The injection mold comprises an upper mold, a mold core and a lower mold; the mold core is connected to the upper mold, the upper mold is detachably connected to the lower mold, and the upper mold, the mold core and the lower mold form a mold cavity; a plurality of injection holes are evenly opened on the upper mold, and each of the injection holes is arranged in a circle; each of the injection holes is connected to the mold cavity; the injection holes are adapted to the injection nozzles, and the driving cylinder drives each of the injection boxes through the driving plate, the rotating motor and the rotating plate to drive an injection nozzle to be inserted into a corresponding injection hole; The receiving platform is provided with a receiving groove, the receiving groove is matched with the lower mold, and the lower mold is received in the receiving groove and connected to the receiving platform.

2. The multi-color injection molding equipment for processing plastic flower pots according to claim 1, characterized in that: The rotating motor is a stepping motor.

3. The multi-color injection molding equipment for processing plastic flower pots according to claim 1, characterized in that: The rotating motor is a servo motor.

4. The multi-color injection molding equipment for processing plastic flower pots according to claim 1, characterized in that: The driving plate is a rectangular plate structure.

5. The multi-color injection molding equipment for processing plastic flower pots according to claim 1, characterized in that: The driving plate is a circular plate structure.

6. The multi-color injection molding equipment for processing plastic flower pots according to claim 1, characterized in that: The rotating plate is a circular plate structure.

7. The multi-color injection molding equipment for processing plastic flower pots according to claim 1, characterized in that: The injection molding mechanism also includes a leak-proof component, which is arranged on the injection molding nozzle, and the leak-proof component includes a connecting plate, an extrusion plate, a leak-proof cover and two elastic units; the connecting plate is sleeved on the injection molding nozzle and connected to the injection molding nozzle; sliding holes are opened on both sides of the connecting plate, and the two elastic units are respectively arranged on both sides of the connecting plate; the elastic unit includes a limit plate, a sliding column and a compression spring; the sliding column is adapted to the sliding hole, and the sliding column is inserted into the sliding hole and is slidably connected to the connecting plate; One end of the sliding column close to the injection box is connected to the limit plate, and one end of the sliding column away from the limit plate is connected to the extrusion plate; the compression spring is adapted to the sliding column, the compression spring is sleeved on the sliding column, one end of the compression spring is connected to the connecting plate, and the other end of the compression spring is connected to the extrusion plate; a sliding hole is provided on the extrusion plate, the sliding hole is adapted to the injection nozzle, the injection nozzle passes through the sliding hole and is slidably connected to the extrusion plate; the leak-proof cover is connected to a side of the extrusion plate facing away from the connecting plate.

8. The multi-color injection molding equipment for processing plastic flower pots according to claim 1, characterized in that: The sliding column is a cylindrical structure.

9. The multi-color injection molding equipment for processing plastic flower pots according to claim 1, characterized in that: The limiting plate is a circular plate structure.

10. The multi-color injection molding equipment for processing plastic flower pots according to claim 1, characterized in that: The multi-color injection molding equipment for processing plastic flower pots also includes a cooling mechanism; a cooling cavity is provided in the lower mold, and the cooling cavity wraps the mold cavity; heat exhaust nozzles are provided on both sides of the end of the lower mold close to the upper mold, and the two heat exhaust nozzles are connected to the cooling cavity; the heat exhaust nozzle is connected to an external drainage pipe; an injection hole is provided at the bottom of the lower mold, and the injection hole is connected to the cooling cavity; a through hole is provided at the bottom of the receiving groove; the cooling mechanism includes a cold water tank, a liquid level sensor, a water pump and a water pump; an injection valve is provided on the cold water tank; the liquid level sensor is arranged in the cold water tank, the water pump is arranged in the cold water tank, and the output end of the water pump is connected to the input end of the water pump; the output end of the water pump passes through the through hole and is inserted into the injection hole and is connected to the lower mold.

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