Automatic spraying module for gearbox shell die-casting die

Abstract

The utility model discloses an automatic spraying module for a gearbox shell die-casting die, which comprises a fixed plate, a fixed die spraying module and a movable die spraying module, the fixed die spraying module and the movable die spraying module are fixedly connected to the fixed plate and are distributed on two sides of the fixed plate, and the fixed die spraying module comprises a plurality of fixed die spraying and blowing groups; a spraying area and an air blowing area which are jointly formed by the plurality of fixed mold spraying and air blowing groups in a matched manner can completely cover the surface of a mold core of a fixed mold of the die-casting mold, and the plurality of fixed mold spraying and air blowing groups work independently; the movable die spraying module comprises a plurality of movable die spraying and blowing sets, a spraying area and a blowing area which are jointly formed by the movable die spraying and blowing sets in a matched mode can completely cover the surface of a cavity of a movable die of the die-casting die, and the movable die spraying and blowing sets work independently. The spraying device can improve the spraying efficiency, ensure the spraying quality and freely control the spraying release dosage and the blowing time according to requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying modules, and particularly relates to an automatic spraying module for a die-casting mold of a gearbox housing. Background Art

[0002] Die casting is a metal casting process. Its principle is to apply high pressure to the molten metal using a mold cavity to obtain castings with specific shapes and sizes. During the die-casting production process, in order to enable the smooth demolding of the castings, it is usually necessary to spray a release agent, such as a water-based release agent or an oil-based release agent, on the surface of the mold cavity. This can form a dense release film on the surface of the mold cavity, so that the castings can easily be removed from the mold. This release film also helps the smooth forming of the molten metal while the molten metal fills the mold, protects the mold, and extends the service life of the mold.

[0003] The mold cavity is designed according to the castings. For some complex castings such as automotive gearbox housings, due to their structural features such as deep cavities, ribs, and bosses, the structure of the mold cavity is also very complex. The traditional spraying module for die-casting molds generally has a row of atomizing nozzles, and a manipulator drives the row of atomizing nozzles to sweep and spray the release agent on the fixed mold and the moving mold in sequence. This spraying method not only has low efficiency and affects the production progress, but also because the fixed mold and the moving mold are usually in a concave-convex structure, this sweeping spraying method makes the spraying quality unstable, and problems such as uneven spraying and local missed spraying are likely to occur, affecting the quality of the castings and the demolding effect; in addition, it is also impossible to freely control the amount of release agent sprayed and the blowing time according to the requirements at different positions. Therefore, it is necessary to improve the existing technology to overcome the defects in the existing technology. Summary of the Utility Model

[0004] The problem to be solved by the utility model is to provide an automatic spraying module for a die-casting mold of a gearbox housing to overcome the defects of the existing spraying module, such as low efficiency, unstable spraying quality, and inability to freely control the amount of release agent sprayed and the blowing time according to the requirements at different positions.

[0005] The technical solution adopted by the present utility model to solve its technical problems is: an automatic spraying module for a die-casting mold of a gearbox housing, comprising: a fixed plate, and a fixed die spraying module and a moving die spraying module which are both fixedly connected to the fixed plate and distributed on both sides of the fixed plate. The fixed die spraying module includes a plurality of fixed die spray and blow groups. The spray area and the blow area formed by the cooperation of the plurality of fixed die spray and blow groups can comprehensively cover the core surface of the fixed die of the die-casting mold, and the plurality of fixed die spray and blow groups work independently of each other; the moving die spraying module includes a plurality of moving die spray and blow groups. The spray area and the blow area formed by the cooperation of the plurality of moving die spray and blow groups can comprehensively cover the cavity surface of the moving die of the die-casting mold, and the plurality of moving die spray and blow groups work independently of each other; the fixed plate is used to be fixed on a robot and can be driven by the robot to drive the fixed die spraying module and the moving die spraying module to move between the fixed die and the moving die of the die-casting mold.

[0006] As a further improvement of the present utility model, each of the fixed die spray and blow groups includes a fixed die spray plate and a plurality of fixed die atomizers. The plurality of fixed die atomizers are arranged in an array on the fixed die spray plate and are both communicated with a fixed die gas passage and a fixed die liquid passage arranged inside the fixed die spray plate.

[0007] As a further improvement of the present utility model, a plurality of fixed die extension blocks are fixed on at least one of the fixed die spray plates, and the fixed die atomizers are installed on the plurality of fixed die extension blocks.

[0008] As a further improvement of the present utility model, each of the fixed die spray and blow groups further includes a plurality of fixed die blow pipes. The plurality of fixed die blow pipes are arranged in an array on the fixed die spray plate and are both communicated with another fixed die gas passage arranged inside the fixed die spray plate.

[0009] As a further improvement of the present utility model, each of the moving die spray and blow groups includes a moving die spray plate and a plurality of moving die atomizers. The plurality of moving die atomizers are arranged in an array on the moving die spray plate and are both communicated with a moving die gas passage and a moving die liquid passage arranged inside the moving die spray plate.

[0010] As a further improvement of the present utility model, extension pipes are arranged on a plurality of the moving die atomizers in at least one of the moving die spray and blow groups, and the nozzles of the moving die atomizers are arranged on the extension pipes.

[0011] As a further improvement of the present utility model, a plurality of moving die extension blocks are fixed on at least one of the moving die spray plates, and the moving die atomizers are installed on the plurality of moving die extension blocks.

[0012] As a further improvement of the utility model, each of the moving die spray and blowing groups further includes a plurality of moving die blowing pipes, and the plurality of moving die blowing pipes are arranged in an array on the moving die spray plate and are all communicated with another moving die gas passage provided inside the moving die spray plate.

[0013] As a further improvement of the utility model, a pipeline connecting plate is fixed on the fixed plate, and the plurality of fixed die spray plates and the plurality of moving die spray plates are respectively connected to the pipeline connecting plate through pipelines.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The utility model provides an automatic spraying module for a die-casting mold of a gearbox housing. By installing a fixed die spraying module and a moving die spraying module on both sides of a fixed plate, during spraying, the robot drives the fixed plate to drive the fixed die spraying module and the moving die spraying module to move between the fixed die and the moving die of the die-casting mold, so that the fixed die spraying module is directly opposite to the core surface of the fixed die, and the moving die spraying module is directly opposite to the cavity surface of the moving die. The fixed die spray and blowing group in the fixed die spraying module and the moving die spray and blowing group in the moving die spraying module start spraying work at the same time. The formed spray area can completely cover the core surface of the fixed die and the cavity surface of the moving die, so that the spraying work can be completed in a very short time, which can greatly improve productivity, shorten the time cycle, and reduce consumption. After spraying, the fixed die spray and blowing group in the fixed die spraying module and the moving die spray and blowing group in the moving die spraying module start blowing work at the same time to blow away the excess moisture on the core surface of the fixed die and the cavity surface of the moving die, preventing it from affecting the die-casting forming quality of the gearbox housing.

[0016] 2. The arrangement mode of the fixed die spray and blowing group in the fixed die spraying module can be designed by copying the core surface of the fixed die. Similarly, the arrangement mode of the moving die spray and blowing group in the moving die spraying module can be designed by copying the cavity surface of the moving die, so that the released agent sprayed can adhere to any part of the core surface of the fixed die and the cavity surface of the moving die, ensuring the spraying quality and avoiding problems such as local non-spraying, thus guaranteeing the quality of the casting and the demoulding effect.

[0017] 3. The fixed die spray and blowing group and the moving die spray and blowing group in the utility model work independently of each other and can be controlled separately, so that the amount of the released agent sprayed and the blowing time of each fixed die spray and blowing group and each moving die spray and blowing group can be freely controlled as needed. Description of the Drawings

[0018] Figure 1 It is a three-dimensional view of the automatic spraying module for the die-casting mold of the gearbox housing of the utility model;

[0019] Figure 2This is a perspective view of another angle of the automatic spraying module for the die-casting mold of the gearbox housing of the present utility model;

[0020] Figure 3 This is the front view of the automatic spraying module for the die-casting mold of the gearbox housing of the present utility model;

[0021] Figure 4 This is the exploded view of the fixed mold spraying module in the present utility model;

[0022] Figure 5 This is the perspective view of one of the fixed mold spray and blow groups in the present utility model;

[0023] Figure 6 This is the perspective view of one of the moving mold spray and blow groups in the present utility model.

[0024] Combined with the attached drawings, the following description is made:

[0025] 1. Fixed plate; 2. Fixed mold spraying module; 21. Fixed mold spray and blow group; 211. Fixed mold spray plate; 2111. Fixed mold gas passage; 2112. Fixed mold liquid passage; 2113. Fixed mold control gas passage; 212. Fixed mold atomizer; 213. Fixed mold extension block; 214. Fixed mold blow pipe; 3. Moving mold spraying module; 31. Moving mold spray and blow group; 311. Moving mold spray plate; 3111. Moving mold gas passage; 3112. Moving mold liquid passage; 3113. Moving mold control gas passage; 312. Moving mold atomizer; 3121. Extension pipe; 3122. Nozzle; 313. Moving mold extension block; 314. Moving mold blow pipe; 4. Pipe connecting plate; 5. Pipe. Specific implementation manner

[0026] The following combines the attached drawings to make a detailed description of the preferred embodiments of the present utility model.

[0027] Refer to Figures 1 to 6 , the present utility model provides an automatic spraying module for a die-casting mold of a gearbox housing, including: a fixed plate 1, a fixed mold spraying module 2, and a moving mold spraying module 3. The fixed mold spraying module 2 is fixedly connected to the fixed plate 1 through a fixed mold connecting plate, and the moving mold spraying module 3 is fixedly connected to the fixed plate 1 through a moving mold connecting plate, and the fixed mold spraying module 2 and the moving mold spraying module 3 are respectively located on the left and right sides of the fixed plate 1.

[0028] Among them, the fixed mold spraying module 2 includes but is not limited to four fixed mold spray and blow groups 21. The four fixed mold spray and blow groups 21 are fixedly spliced together, and the shape formed by their splicing is roughly similar to the core surface of the fixed mold of the die-casting mold. The four fixed mold spray and blow groups 21 are used in cooperation, and the spray area and the blowing area formed together during work can fully cover the core surface of the fixed mold of the die-casting mold, and the four fixed mold spray and blow groups 21 can work independently of each other.

[0029] Among them, the moving die spraying module 3 includes, but is not limited to, seven moving die spray and blowing groups 31. The seven moving die spray and blowing groups 31 are fixedly spliced together, and the shape formed by their splicing is roughly similar to the cavity surface of the moving die of the die-casting mold. The seven moving die spray and blowing groups 31 are used in combination, and the spray area and blowing area formed together during operation can fully cover the cavity surface of the moving die of the die-casting mold, and multiple moving die spray and blowing groups 31 can work independently of each other.

[0030] The fixed plate 1 in the present utility model is used to be fixed on a robot and can be driven by the robot to drive the fixed die spraying module 2 and the moving die spraying module 3 to move between the fixed die and the moving die of the die-casting mold.

[0031] During spraying, the fixed die and the moving die of the die-casting mold are in an open state. The robot drives the fixed plate 1 to drive the fixed die spraying module 2 and the moving die spraying module 3 to move between the fixed die and the moving die of the die-casting mold, so that the fixed die spraying module 2 is directly opposite to the core surface of the fixed die, and the moving die spraying module 3 is directly opposite to the cavity surface of the moving die. The four fixed die spray and blowing groups 21 in the fixed die spraying module 2 and the seven moving die spray and blowing groups 31 in the moving die spraying module 3 start spraying work simultaneously. The formed spray area can fully cover the core surface of the fixed die and the cavity surface of the moving die, so that the spraying work can be completed in a very short time. There is no need for the robot to drive for sweeping spraying during the spraying process, which can greatly improve productivity, shorten the time cycle, and reduce consumption. After spraying, the four fixed die spray and blowing groups 21 in the fixed die spraying module 2 and the seven moving die spray and blowing groups 31 in the moving die spraying module 3 start blowing work simultaneously to blow away the excess moisture on the core surface of the fixed die and the cavity surface of the moving die, preventing it from affecting the die-casting forming quality of the transmission housing.

[0032] It is worth mentioning that the arrangement method of the fixed die spray and blowing groups 21 in the fixed die spraying module 2 can be designed according to the core surface of the fixed die. Similarly, the arrangement method of the moving die spray and blowing groups 31 in the moving die spraying module 3 can be designed according to the cavity surface of the moving die, so that the sprayed release agent can adhere to any part of the core surface of the fixed die and the cavity surface of the moving die, ensuring the spraying quality and avoiding problems such as local missed spraying, thereby guaranteeing the quality of the casting and the demoulding effect.

[0033] In addition to facilitating the smooth demolding of the casting, the release agent can also play a certain cooling effect. Due to the presence of structural features such as deep cavities, ribs, and bosses on the moving mold and the fixed mold, the temperatures at different positions of the moving mold and the fixed mold are often different. It is necessary to extend the spraying time for the areas with high temperature and relatively shorten the spraying time for the areas with low temperature. The existing sweeping spraying method cannot be controlled individually, and the spraying amount at each part is the same and cannot be adjusted, which cannot meet the different cooling requirements. In the present utility model, the four fixed mold spray and blow groups 21 and the seven moving mold spray and blow groups 31 all work independently and can be controlled individually, so that the amount of release agent sprayed and the blowing time of each fixed mold spray and blow group 21 and each moving mold spray and blow group 31 can be freely controlled as needed.

[0034] Refer to Figure 4 and Figure 5 For the fixed mold spray and blow group 21, it includes a fixed mold spray plate 211, a plurality of fixed mold atomizers 212, and a plurality of fixed mold air pipes 214. The plurality of fixed mold atomizers 212 are arranged in an array on the fixed mold spray plate 211 and are all connected to a fixed mold gas passage 2111 and a fixed mold liquid passage 2112 provided inside the fixed mold spray plate 211. The plurality of fixed mold air pipes 214 are also arranged in an array on the fixed mold spray plate 211 and are all connected to another fixed mold gas passage 2111 provided inside the fixed mold spray plate 211.

[0035] In this embodiment, there are four passages provided inside the fixed mold spray plate 211, namely two fixed mold gas passages 2111, one fixed mold liquid passage 2112, and one fixed mold control gas passage 2113. The fixed mold air pipes 214 are connected to one of the fixed mold gas passages 2111; the fixed mold atomizers 212 are connected to another fixed mold gas passage 2111, one fixed mold liquid passage 2112, and one fixed mold control gas passage 2113. The fixed mold gas passage 2111 is used to provide atomizing gas for the fixed mold atomizers 212, the fixed mold liquid passage 2112 is used to provide release agent for the fixed mold atomizers 212, and the fixed mold control gas passage 2113 is used to control the opening or closing of the fixed mold atomizers 212. Specifically, when the release agent enters the fixed mold atomizers 212, under the action of high-speed air flow, the liquid is sheared into tiny droplets and sprayed out together with the air flow to form a spraying effect.

[0036] It should be noted that the fixed mold atomizers 212 in the present utility model adopt existing conventional technologies, such as a flow adjustable direct-through atomizer disclosed in the Chinese utility model patent with the application number 202120194322.X and the publication date of November 16, 2021.

[0037] Refer to Figure 3 and Figure 5, on the back of the fixed mold spray plate 211, there are four pipes 5 corresponding one-to-one to two fixed mold gas passages 2111, one fixed mold liquid passage 2112, and one fixed mold control gas passage 2113. A pipe connection plate 4 is fixed on the fixed plate 1. Each fixed mold spray plate 211 is connected to the pipe connection plate 4 through four pipes 5, and the pipe connection plate 4 is then connected to an external liquid supply device and gas supply device to achieve the supply of gas and liquid. Among them, the liquid supply device, gas supply device, and the opening and closing control of the fixed mold atomizer 212 all adopt existing conventional technologies, and will not be elaborated here too much.

[0038] According to requirements, several fixed mold extension blocks 213 can be fixedly arranged in an array on one or several of the fixed mold spray plates 211, and the fixed mold atomizers 212 are correspondingly installed on the fixed mold extension blocks 213, so that several fixed mold atomizers 212 are distributed in a staggered manner along the direction perpendicular to the fixed mold spray plate 211 to better match the core surface of the fixed mold.

[0039] It can be understood that through holes communicating with the passages on the fixed mold spray plate 211 are correspondingly arranged inside the fixed mold extension blocks 213.

[0040] Refer to Figure 2 and Figure 6 , the moving mold spray and blowing group 31 all includes a moving mold spray plate 311, several moving mold atomizers 312, and several moving mold blowing pipes 314. Several moving mold atomizers 312 are installed in an array on the moving mold spray plate 311 and are all communicated with the moving mold gas passage 3111 and the moving mold liquid passage 3112 arranged inside the moving mold spray plate 311. Several moving mold blowing pipes 314 are installed in an array on the moving mold spray plate 311 and are all communicated with another moving mold gas passage 3111 arranged inside the moving mold spray plate 311.

[0041] It should be noted that the moving mold atomizer 312 has the same structure as the fixed mold atomizer 212, and the moving mold spray plate 311 also has the same structure as the fixed mold spray plate 211 (only with some differences in size). It has two moving mold gas passages 3111, one moving mold liquid passage 3112, and one moving mold control gas passage 3113, and will not be elaborated here too much.

[0042] Similarly, according to requirements, several moving mold extension blocks 313 can be fixedly arranged in an array on one or several of the moving mold spray plates 311, and the moving mold atomizers 312 are correspondingly installed on the moving mold extension blocks 313, so that several moving mold atomizers 312 are distributed in a staggered manner along the direction perpendicular to the moving mold spray plate 311 to better match the cavity surface of the moving mold.

[0043] Similarly to the fixed mold spray plate 211, each movable mold spray plate 311 is also connected to the pipeline connection plate 4 through four pipelines 5. By adopting the pipeline connection plate 4, the utility model can simplify the pipeline structure and make the spraying module structure more concise.

[0044] Furthermore, according to requirements, extension tubes 3121 can be provided on several movable mold atomizers 312 in one or several of the movable mold spray and blow groups 31, and the nozzles 3122 of the movable mold atomizers 312 are arranged on the extension tubes 3121, so that the nozzles 3122 can reach the deep cavity position to ensure the spraying effect. Among them, the structures of the nozzles 3122 and the extension tubes 3121 are conventional existing technologies. For example, a kind of atomizer extension atomization assembly disclosed in the Chinese utility model patent with the application number 202120194446.8 and the publication date of November 19, 2021.

[0045] It can be seen that in the automatic spraying module for the die-casting mold of the gearbox housing of the present utility model, the fixed mold spraying module 2 and the movable mold spraying module 3 are installed on both sides of the fixing plate 1. During spraying, the robot drives the fixing plate 1 to drive the fixed mold spraying module 2 and the movable mold spraying module 3 to move between the fixed mold and the movable mold of the die-casting mold, so that the fixed mold spraying module 2 is directly opposite to the core surface of the fixed mold, and the movable mold spraying module 3 is directly opposite to the cavity surface of the movable mold. The fixed mold spray and blow group 21 in the fixed mold spraying module 2 and the movable mold spray and blow group 31 in the movable mold spraying module 3 start spraying work at the same time. The formed spray area can fully cover the core surface of the fixed mold and the cavity surface of the movable mold, so that the spraying work can be completed in a very short time, which can greatly improve productivity, shorten the time cycle and reduce consumption. After spraying, the fixed mold spray and blow group 21 in the fixed mold spraying module 2 and the movable mold spray and blow group 31 in the movable mold spraying module 3 start blowing work at the same time to blow away the excess moisture on the core surface of the fixed mold and the cavity surface of the movable mold to prevent affecting the die-casting forming quality of the gearbox housing. In addition, the arrangement mode of the fixed mold spray and blow group 21 in the fixed mold spraying module 2 can be designed by copying the core surface of the fixed mold. Similarly, the arrangement mode of the movable mold spray and blow group 31 in the movable mold spraying module 3 can be designed by copying the cavity surface of the movable mold, so that the sprayed release agent can adhere to any part of the core surface of the fixed mold and the cavity surface of the movable mold, ensuring the spraying quality and avoiding problems such as local missing spraying, thereby guaranteeing the quality of the casting and the demoulding effect. Moreover, the fixed mold spray and blow group 21 and the movable mold spray and blow group 31 in the present utility model work independently of each other and can be controlled separately, so that the amount of the sprayed release agent and the blowing time of each fixed mold spray and blow group 21 and each movable mold spray and blow group 31 can be freely controlled according to needs.

[0046] In the above description, many specific details are set forth to fully understand the present utility model. However, the above description is only a preferred embodiment of the present utility model, and the present utility model can be implemented in many other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed above. At the same time, any person skilled in the art can make many possible changes and modifications to the technical solution of the present utility model by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present utility model, or modify it into equivalent embodiments with equivalent changes. All those that do not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of protection of the technical solution of the present utility model.

Claims

1. An automated spraying module for a gearbox housing die-casting mold, characterized in that: include: A fixed plate (1) and a fixed mold spraying module (2) and a movable mold spraying module (3) both fixedly connected to the fixed plate (1) and distributed on both sides of the fixed plate (1), wherein the fixed mold spraying module (2) comprises a plurality of fixed mold spraying and blowing groups (21), and the spraying area and the blowing area formed by the plurality of fixed mold spraying and blowing groups (21) can fully cover the core surface of the fixed mold of the die-casting mold, and the plurality of fixed mold spraying and blowing groups (21) work independently of each other; the movable mold spraying module (2) comprises a plurality of fixed mold spraying and blowing groups (21) and a plurality of fixed mold spraying and blowing groups (21) The group (3) includes a plurality of movable mold spray blowing groups (31), and the spray area and the blowing area formed by the plurality of movable mold spray blowing groups (31) can fully cover the cavity surface of the movable mold of the die-casting mold, and the plurality of movable mold spray blowing groups (31) work independently of each other; the fixed plate (1) is used to be fixed on the robot, and can be driven by the robot to drive the fixed mold spraying module (2) and the movable mold spraying module (3) to move between the fixed mold and the movable mold of the die-casting mold.

2. The automatic spraying module for the gearbox housing die-casting mold according to claim 1, characterized in that: The fixed mold spray blowing group (21) comprises a fixed mold spray plate (211) and a plurality of fixed mold atomizers (212); the plurality of fixed mold atomizers (212) are arrayed on the fixed mold spray plate (211) and are connected to a fixed mold gas passage (2111) and a fixed mold liquid passage (2112) arranged inside the fixed mold spray plate (211).

3. The automatic spraying module for the gearbox housing die-casting mold according to claim 2, characterized in that: A plurality of fixed mold extension blocks (213) are fixed on at least one of the fixed mold spray plates (211), and the fixed mold atomizers (212) are installed on the plurality of fixed mold extension blocks (213).

4. The automatic spraying module for the gearbox housing die-casting mold according to claim 2, characterized in that: The fixed mold spray blowing group (21) also includes a plurality of fixed mold blowing pipes (214). The plurality of fixed mold blowing pipes (214) are arrayed on the fixed mold spray plate (211) and are all connected to another fixed mold gas passage (2111) arranged inside the fixed mold spray plate (211).

5. The automatic spraying module for the gearbox housing die-casting mold according to claim 2, characterized in that: The movable mold spray blowing group (31) comprises a movable mold spray plate (311) and a plurality of movable mold atomizers (312). The plurality of movable mold atomizers (312) are arrayed on the movable mold spray plate (311) and are connected to a movable mold gas passage (3111) and a movable mold liquid passage (3112) arranged inside the movable mold spray plate (311).

6. The automatic spraying module for the gearbox housing die-casting mold according to claim 5, characterized in that: An extension tube (3121) is provided on a plurality of the movable mold atomizers (312) in at least one of the movable mold spray blowing groups (31), and the nozzles (3122) of the movable mold atomizers (312) are provided on the extension tube (3121).

7. The automatic spraying module for the gearbox housing die-casting mold according to claim 5, characterized in that: A plurality of movable mold extension blocks (313) are fixed on at least one of the movable mold spray plates (311), and the movable mold atomizers (312) are installed on the plurality of movable mold extension blocks (313).

8. The automatic spraying module for the gearbox housing die-casting mold according to claim 5, characterized in that: The movable mold spray blowing group (31) also includes a plurality of movable mold blowing pipes (314). The plurality of movable mold blowing pipes (314) are arrayed on the movable mold spray plate (311) and are connected to another movable mold gas passage (3111) arranged inside the movable mold spray plate (311).

9. The automatic spraying module for the gearbox housing die-casting mold according to claim 5, characterized in that: A pipeline connecting plate (4) is fixed on the fixed plate (1), and the plurality of fixed mold spray plates (211) and the plurality of movable mold spray plates (311) are respectively connected to the pipeline connecting plate (4) via pipelines (5).

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