Die-casting die in-die spraying device and die-casting die

Abstract

The utility model provides a die-casting die in-die spraying device and a die-casting die, and relates to the field of die-casting dies. The die-casting die in-die spraying device comprises a rear die assembly, a telescopic assembly, an insert pin and a spraying assembly. The rear die assembly is provided with a forming cavity used for forming a product and a material conveying channel used for conveying a release agent. The telescopic assembly is connected with the rear mold assembly, the insert pin is connected with the telescopic assembly, and the telescopic assembly is used for driving the insert pin to stretch into or leave the forming cavity; the spraying assembly is installed in the material conveying channel. The material conveying channel is used for being connected with a pressure feeder and can spray a release agent to the insert pin located at the mold opening position through the spraying assembly. The spraying device can adapt to a complex mold structure, can comprehensively spray a release agent to a mold, is not prone to the situations of mold drawing and the like during mold opening, and can improve the forming quality of products, reduce the rejection rate and reduce the manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the field of die casting moulds, in particular to a die casting mould in-mould spraying device and a die casting mould. Background Art

[0002] At present, the existing spraying system for die-casting molds is relatively simple, generally spraying outside the mold, which can achieve full spraying of simple structure molds. However, for molds with complex structures, it is impossible to spray the release agent from the outside to some positions of the mold, which eventually leads to the pulling of the product, affecting the production cost and delivery cycle. In other words, the spraying system of the prior art can no longer meet the needs of products with complex structures and is not conducive to industrial production. At present, it is urgent to design an in-mold spraying system to adapt to the structure and production. Utility Model Content

[0003] The purpose of the utility model is to provide a die-casting mold in-mold spraying device and a die-casting mold, which can realize in-mold spraying, can adapt to complex mold structures, is conducive to mold opening, and is not prone to mold pulling when opening the mold. It can improve the molding quality of the product, reduce the scrap rate, and reduce the manufacturing cost.

[0004] The embodiment of the utility model is achieved as follows:

[0005] In a first aspect, the utility model provides a die-casting mold in-mold spraying device, comprising:

[0006] A rear mold assembly, a telescopic assembly, an insert pin and a spray assembly, wherein the rear mold assembly has a molding cavity for molding products and a material delivery channel for delivering a release agent; the telescopic assembly is connected to the rear mold assembly, the insert pin is connected to the telescopic assembly, and the telescopic assembly is used to drive the insert pin to extend into or leave the molding cavity; the spray assembly is installed in the material delivery channel;

[0007] The feeding channel is used to be connected to a pressure conveyor, and can spray the demoulding agent onto the insert pin in the mold opening position through the spraying assembly.

[0008] In an optional embodiment, the rear mold assembly includes a rear mold base and a rear mold core, the rear mold base is provided with a positioning groove, the rear mold core is installed in the positioning groove, and the molding cavity is provided on the rear mold core.

[0009] Based on the above solution, the rear mold assembly has a simple structure and is easy to process and manufacture. The rear mold base and the rear mold core are independently processed and then assembled together. They can be processed with different materials respectively, thereby reducing the processing and manufacturing costs.

[0010] In an optional embodiment, a material conveying channel is provided on both the rear mold base and the rear mold core.

[0011] Based on the above scheme, feed channels are formed on the rear mold base and the rear mold core, and the release agent can be transported from different feed channels according to needs, so that the release agent can be sprayed from different positions and thus sprayed to the corresponding parts of the mold. Multiple positions can be sprayed, which is conducive to demolding.

[0012] In an optional embodiment, the telescopic assembly includes a telescope, a first slider and a second slider, the telescope is connected to the rear mold base, the first slider is connected to the second slider, the insert pin is connected to the first slider, and the second slider is connected to the telescope; the material feeding channel located on the rear mold core cooperates with the insert pin, and the material feeding channel located on the rear mold base cooperates with the second slider.

[0013] Based on the above scheme, the first slider and the second slider are processed independently and then matched together, which is convenient to process and low in cost. The telescopic device drives the inlay pin to move through the first slider and the second slider, and the movement of the inlay pin is more stable. The position of the inlay pin is determined by the first slider and the second slider, so that the inlay pin can be precisely matched with the molding cavity, which is conducive to improving the molding quality of the product.

[0014] In an optional embodiment, the spraying assembly includes a spherical spray head having a spray port, the spherical spray head is located in the feed channel, and the spherical spray head and the feed channel are movably matched to adjust the discharge direction of the spray port.

[0015] Based on the above scheme, the structural design of the spherical nozzle can adjust the angle of the spherical nozzle relative to the feed channel after the spherical nozzle is installed in the feed channel, that is, adjust the angle of the spray port, so that the spray port can better correspond to the part of the mold to be sprayed with the release agent, the release agent can accurately reach the mold, the spraying effect is good, the release agent can be saved, and the waste of materials can be reduced.

[0016] In an optional embodiment, the spraying assembly further includes a one-way valve, which is installed in the feed channel and located behind the spherical spray head, and the one-way valve only allows the release agent to be sprayed out from the spherical spray head.

[0017] Based on the above solution, by setting a one-way valve, when the mold release agent is pumped into the feed channel by the pressure feeder, the mold release agent will first pass through the one-way valve, then enter the spherical nozzle, and be sprayed onto the mold from the spherical nozzle. After being sprayed, the mold release agent will not flow back into the feed channel from the one-way valve, and is not easy to pollute the feed channel.

[0018] In an optional embodiment, the one-way valve includes a fixed sleeve, a supporting sleeve, a spherical valve core and an elastic member, the supporting sleeve is installed in the fixed sleeve, and the spherical nozzle is clamped between the supporting sleeve and the fixed sleeve; the supporting sleeve is provided with a limiting step, the spherical valve core is installed at the limiting step, and the elastic member is located between the spherical valve core and the spherical nozzle, and is used to make the spherical valve core have a movement tendency close to the limiting step; the fixed sleeve is installed in the feed channel.

[0019] Based on the above scheme, the structure of the one-way valve is simple, and when spraying, it is necessary to overcome the elastic force of the elastic member first, push the spherical valve core open, and open the hole section at the limit step, so that the release agent can be sprayed out from the spray port of the spherical nozzle, that is, it can be ensured that the release agent is sprayed at a certain speed, and that the release agent can be smoothly moved to the position to be sprayed. When the pressure of the release agent is reduced and is not enough to spray onto the mold, the spherical valve core is pushed toward the limit step under the action of the elastic member to block the limit step, so that the release agent is not easy to overflow from the spherical nozzle, reducing material waste.

[0020] In an optional embodiment, the fixing sleeve is configured as an external thread, the feeding channel has an internal thread, and the external thread is screwed and fixed to the internal thread.

[0021] Based on the above solution, the combination of the fixing sleeve and the material conveying channel is simple, easy to operate, and easy to assemble and disassemble.

[0022] In an optional embodiment, a snap-in groove for cooperating with a screwdriver is provided at the end of the fixing sleeve.

[0023] Based on the above solution, by inserting a tool such as a screwdriver into the card slot, applying force to the screwdriver can drive the fixing sleeve to rotate, thereby adjusting the position of the fixing sleeve, and the operation is convenient.

[0024] The beneficial effects of the embodiments of the utility model are:

[0025] To sum up, the die-casting mold in-mold spraying device provided in the present embodiment integrates the spraying component on the rear mold component. When the mold opening action is completed, the release agent spraying operation on the insert pins and other components can be completed in the mold through the spraying component. That is, by setting a position switch, when the product manufacturing is completed and the mold is opened to the set position, the position switch is triggered and sends a signal to the pressure feeder. After the pressure feeder is started, the release agent is transported to the feed channel and then sprayed from the spraying component to the insert pins and other components, thereby realizing the in-mold spraying of the release agent, ensuring that all positions in the mold can be fully sprayed with the release agent, greatly reducing the problem of product die pulling, reducing the product scrap rate, and effectively improving the production efficiency. In addition, it can save manpower and time costs, meet the factory production needs, and have high economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of a die-casting mold in-mold spraying device according to an embodiment of the utility model;

[0028] Figure 2 A schematic diagram of a rear mold base according to an embodiment of the present utility model;

[0029] Figure 3 A schematic diagram of a spraying assembly according to an embodiment of the utility model;

[0030] Figure 4 It is a cross-sectional schematic diagram of a spraying assembly according to an embodiment of the utility model.

[0031] icon:

[0032] 100-rear mold assembly; 101-molding cavity; 102-feeding channel; 103-threaded hole; 110-rear mold base; 120-rear mold core; 200-telescopic assembly; 210-telescope; 220-first slider; 230-second slider; 231-T-slot; 240-pull rod; 300-needle; 400-spraying assembly; 410-spherical nozzle; 411-spray port; 420-check valve; 421-fixing sleeve; 4211-clamping groove; 422-support sleeve; 4221-limiting step; 423-spherical valve core; 424-elastic part. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the prior art, the release agent is generally sprayed outside the mold, that is, the release agent is sprayed from the outside onto the front and rear molds when the mold is opened. Due to the complex structure of some molds, such as molds with core pulling mechanisms, some parts have left the mold when the mold is opened. At this time, the sprayed release agent is not effectively sprayed onto the core pulling mechanism, which makes it easy for the core pulling mechanism to pull the mold, thereby increasing the scrap rate of the product.

[0040] In view of this, the designer provides an in-mold spraying device for a die-casting mold. Through in-mold spraying, it is ensured that all parts in the mold can be sprayed with a release agent, and defects such as die pulling are not easily produced during demolding. The product has high molding quality, low scrap rate, and low production cost.

[0041] Please combine Figure 1-Figure 4In this embodiment, the die-casting mold in-mold spraying device includes a rear mold component 100, a telescopic component 200, an insert pin 300 and a spray component 400. The rear mold component 100 has a molding cavity 101 for molding products and a feeding channel 102 for conveying a release agent; the telescopic component 200 is connected to the rear mold component 100, and the insert pin 300 is connected to the telescopic component 200. The telescopic component 200 is used to drive the insert pin 300 to extend into or leave the molding cavity 101; the spray component 400 is installed in the feeding channel 102; the feeding channel 102 is used to connect to a pressure feeder, and can spray the release agent through the spray component 400 onto the insert pin 300 in the mold opening position.

[0042] Based on the above scheme, the working method of the die-casting mold in-mold spraying device provided in this embodiment includes, for example:

[0043] The spraying device is used in conjunction with the pressure feeder, and the pressure feeder is connected to the feed channel 102. When the mold opening action is completed, the release agent spraying operation on the insert pin 300 and other parts can be completed in the mold through the spraying component 400, that is, by setting a position switch, when the product manufacturing is completed and the mold is opened to the set position, the position switch is triggered and a signal is sent to the pressure feeder. After the pressure feeder is started, the release agent is transported to the feed channel 102, and then sprayed from the spraying component 400 to the insert pin 300 and other parts, so as to realize the operation of spraying the release agent in the mold, ensuring that all positions in the mold can be fully sprayed with the release agent, greatly reducing the problem of product mold pulling, reducing the scrap rate of products, effectively improving the production efficiency, and saving manpower and time costs, meeting the factory production needs, and having high economic benefits.

[0044] The following embodiments illustrate the details of the die-casting mold in-mold spraying device provided by the present application by way of examples.

[0045] Please combine Figure 1 In this embodiment, optionally, the rear mold assembly 100 includes a rear mold base 110 and a rear mold core 120. The rear mold base 110 is provided with a positioning groove, and the rear mold core 120 is installed in the positioning groove. The molding cavity 101 is provided on the rear mold core 120. The rear mold base 110 and the rear mold core 120 are processed independently and then assembled together. They can be processed with different materials respectively, thereby reducing the processing and manufacturing costs. The processing cost of the rear mold core 120 is high. The rear mold base 110 plays the role of supporting and positioning the rear mold core 120, and its processing material budget can be relatively low, thereby saving costs.

[0046] Furthermore, the rear mold base 110 and the rear mold core 120 are both provided with a material delivery channel 102. The rear mold base 110 and the rear mold core 120 are both formed with a material delivery channel 102, and the mold release agent can be delivered from different material delivery channels 102 according to needs, so that the mold release agent is sprayed from different positions, thereby spraying to the corresponding parts of the mold, and multiple positions can be sprayed, which is conducive to demolding.

[0047] It should be understood that the number of feed channels 102 on the rear mold base 110 and the rear mold core 120 can be set as needed, and is not specifically limited in the present embodiment. A spray assembly 400 is installed in each feed channel 102, and the combination structure of the spray assembly 400 and the feed channel 102 is the same. In order to avoid repeated descriptions, the present embodiment only takes the combination of a pair of feed channels 102 and a spray assembly 400 as an example for explanation.

[0048] Please combine Figure 2 Optionally, one end of the feed channel 102 located on the inner side of the mold is provided with an internal thread, that is, a partial threaded hole 103 is formed, which is convenient for use with the spray assembly 400.

[0049] In addition, the winding shape of the feeding channel 102 can be set as needed, and can be a straight channel or a curved channel, etc., as long as it can adapt to the mold structure.

[0050] Please combine Figure 1 In this embodiment, optionally, the telescopic assembly 200 includes a telescope 210, a first slider 220 and a second slider 230. The telescope 210 is connected to the rear mold base 110, the first slider 220 is connected to the second slider 230, the insert pin 300 is connected to the first slider 220, and the second slider 230 is connected to the telescope 210; the feed channel 102 located on the rear mold core 120 cooperates with the insert pin 300, and the feed channel 102 located on the rear mold base 110 cooperates with the second slider 230. The first slider 220 and the second slider 230 are processed independently and then matched together, which is convenient to process and low in cost. The telescope 210 drives the insert pin 300 to move through the first slider 220 and the second slider 230, and the movement of the insert pin 300 is more stable. The position of the insert pin 300 is determined by the first slider 220 and the second slider 230, so that the insert pin 300 can be precisely matched with the molding cavity 101, which is conducive to improving the molding quality of the product.

[0051] It should be understood that the telescopic device 210 can be a pneumatic cylinder or a hydraulic cylinder, etc., which has a simple structure and is easy to operate, and is conducive to controlling the position of the insert pin 300.

[0052] In addition, the first slider 220 and the second slider 230 are both slidably matched with the rear mold assembly 100. When the mold is in the mold opening position, the release agent sprayed from the feed channel 102 provided on the rear mold core 120 can reach the insert pin 300, and the release agent sprayed from the feed channel 102 provided on the rear mold base 110 can reach the second slider 230, thereby realizing the release agent spraying of the insert pin 300 and the second slider 230.

[0053] Furthermore, a T-shaped slot 231 may be provided on the second sliding block 230 , and a pull rod 240 may be installed on the telescopic end of the telescope 210 , and the pull rod 240 is engaged with the T-shaped slot 231 to achieve power transmission.

[0054] Please combine Figure 3 and Figure 4 In this embodiment, optionally, the spray assembly 400 includes a spherical spray head 410 and a one-way valve 420. The spherical spray head 410 is provided with a spray port 411. The spherical spray head 410 and the one-way valve 420 are both located in the feed channel 102. The spherical spray head 410 and the feed channel 102 are movably matched to adjust the discharge direction of the spray port 411. The one-way valve 420 is located behind the spherical spray head 410. The one-way valve 420 only allows the release agent to be sprayed out from the spherical spray head 410. The release agent sprayed from the spherical spray head 410 is blocked by the one-way valve 420 and will not enter the feed channel 102 through the one-way valve 420. The structural design of the spherical nozzle 410 can adjust the angle of the spherical nozzle 410 relative to the feed channel 102 after the spherical nozzle 410 is installed in the feed channel 102, that is, adjust the angle of the spray port 411, so that the spray port 411 can better correspond to the part of the mold to be sprayed with the release agent, and the release agent can accurately reach the mold, with a good spraying effect, which can save the release agent and reduce the waste of materials. At the same time, by setting a one-way valve 420, when the release agent is pumped into the feed channel 102 by the pressure conveyor, the release agent will first pass through the one-way valve 420, and then enter the spherical nozzle 410, and spray from the spherical nozzle 410 to the mold. After being sprayed, the release agent will not flow back from the one-way valve 420 to the feed channel 102, and it is not easy to contaminate the feed channel 102.

[0055] Optionally, the one-way valve 420 includes a fixed sleeve 421, a support sleeve 422, a spherical valve core 423 and an elastic member 424. Both sides of the fixed sleeve 421 are open, one side of the opening is connected to the material delivery channel 102, and the other side of the opening corresponds to the spherical nozzle 410. Both ends of the support sleeve 422 are open, the support sleeve 422 is installed in the fixed sleeve 421, the spherical nozzle 410 is clamped between the support sleeve 422 and the fixed sleeve 421, and the inner wall of the support sleeve 422 is provided with a limiting step 4221, that is, the inside of the support sleeve 422 is formed with a first hole section and a second hole section that are connected, the diameter of the first hole section is smaller than the diameter of the second hole section, the first hole section is connected to the opening of the fixed sleeve 421 away from the spherical nozzle 410, and the connection between the second hole section and the first hole section forms a limiting step 4221, and the spherical valve core 423 is installed at the limiting step 4221, which can block the end of the first hole section connected to the second hole section. The elastic member 424 is located between the spherical valve core 423 and the spherical nozzle 410, and is used to make the spherical valve core 423 have a movement tendency close to the limit step 4221, so that the spherical valve core 423 can be in a position to close the first hole section under normal conditions. The outer peripheral surface of the fixed sleeve 421 is provided with an external thread, and the fixed sleeve 421 is inserted into the feed channel 102. The external thread on the fixed sleeve 421 is threadedly matched with the internal thread on the inner wall of the feed channel 102. The spray assembly 400 has a simple structure and is easy to assemble with the rear mold core 120 or the rear mold base 110.

[0056] During operation, when spraying, it is necessary to overcome the elastic force of the elastic member 424, push the ball valve core 423 open, and open the hole section at the limit step 4221, so that the release agent can be sprayed out from the spray port 411 of the spherical nozzle 410, that is, it can be ensured that the release agent is sprayed at a certain speed and can be smoothly moved to the position to be sprayed. When the pressure of the release agent is reduced and is not enough to be sprayed on the mold, the ball valve core 423 is pushed to the limit step 4221 under the action of the elastic member 424, and the limit step 4221 is blocked, so that the release agent is not easy to overflow from the spherical nozzle 410, reducing the waste of materials.

[0057] It should be understood that the elastic member 424 may be a spring.

[0058] Furthermore, the end of the fixing sleeve 421 is provided with a clamping groove 4211 for cooperating with a screwdriver. By plugging a tool such as a screwdriver into the clamping groove 4211, applying force to the screwdriver can drive the fixing sleeve 421 to rotate, thereby adjusting the position of the fixing sleeve 421, and the operation is convenient.

[0059] It should be understood that the snap-in slot 4211 may be a slot or a cross slot, etc.

[0060] The in-mold spraying device for the die-casting mold provided in the present embodiment adds an in-mold spraying system in the mold. The die-casting machine can transmit a signal to the pressing machine through the mold movement, so that the time of the in-mold spraying is basically consistent with the out-mold spraying. On the basis of not changing the original production rhythm, it is ensured that all positions in the mold can be fully sprayed with the release agent. In this way, the problem of product die pulling is greatly reduced, the scrap rate of products is reduced, the production efficiency is improved, and the cost of manpower and time is saved, which can meet the production needs of the factory.

[0061] This embodiment also provides a die-casting mold, including the in-mold spraying device of the compression mold of the above embodiment.

[0062] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A die-casting mold in-mold spraying device, characterized in that: include: A rear mold assembly (100), a telescopic assembly (200), an insert pin (300) and a spray assembly (400), wherein the rear mold assembly (100) has a molding cavity (101) for molding a product and a material delivery channel (102) for delivering a mold release agent; the telescopic assembly (200) is connected to the rear mold assembly (100), the insert pin (300) is connected to the telescopic assembly (200), and the telescopic assembly (200) is used to drive the insert pin (300) to extend into or leave the molding cavity (101); the spray assembly (400) is installed in the material delivery channel (102); The feeding channel (102) is used to be connected to a pressure conveyor, and can spray the demoulding agent onto the insert pin (300) at the mold opening position through the spraying assembly (400).

2. The die-casting mold in-mold spraying device according to claim 1, characterized in that: The rear mold assembly (100) comprises a rear mold base (110) and a rear mold core (120); the rear mold base (110) is provided with a positioning groove; the rear mold core (120) is installed in the positioning groove; and the molding cavity (101) is provided on the rear mold core (120).

3. The die-casting mold in-mold spraying device according to claim 2, characterized in that: The rear mold base (110) and the rear mold core (120) are both provided with a material conveying channel (102).

4. The die-casting mold in-mold spraying device according to claim 3, characterized in that: The telescopic assembly (200) includes a telescope (210), a first slider (220) and a second slider (230); the telescope (210) is connected to the rear mold base (110), the first slider (220) is connected to the second slider (230), the insert pin (300) is connected to the first slider (220), and the second slider (230) is connected to the telescope (210); the feed channel (102) located on the rear mold core (120) cooperates with the insert pin (300), and the feed channel (102) located on the rear mold base (110) cooperates with the second slider (230).

5. The die-casting mold in-mold spraying device according to claim 1, characterized in that: The spraying assembly (400) comprises a spherical spray head (410) having a spray port (411), the spherical spray head (410) being located in the material delivery channel (102), and the spherical spray head (410) being movably matched with the material delivery channel (102) to adjust the discharge direction of the spray port (411).

6. The die-casting mold in-mold spraying device according to claim 5, characterized in that: The spraying assembly (400) further comprises a one-way valve (420), wherein the one-way valve (420) is installed in the material delivery channel (102), and the one-way valve (420) is located behind the spherical spray head (410). The one-way valve (420) only allows the release agent to be sprayed out from the spherical spray head (410).

7. The die-casting mold in-mold spraying device according to claim 6, characterized in that: The one-way valve (420) comprises a fixed sleeve (421), a supporting sleeve (422), a spherical valve core (423) and an elastic member (424); the supporting sleeve (422) is installed in the fixed sleeve (421), and the spherical nozzle (410) is clamped between the supporting sleeve (422) and the fixed sleeve (421); the supporting sleeve (422) is provided with a limiting step (4221), the spherical valve core (423) is installed at the limiting step (4221), and the elastic member (424) is located between the spherical valve core (423) and the spherical nozzle (410) and is used to make the spherical valve core (423) have a movement tendency close to the limiting step (4221); the fixed sleeve (421) is installed in the feed channel (102).

8. The die-casting mold in-mold spraying device according to claim 7, characterized in that: The fixing sleeve (421) is configured as an external thread, the material delivery channel (102) has an internal thread, and the external thread is screwed and fixed to the internal thread.

9. The die-casting mold in-mold spraying device according to claim 8, characterized in that: The end of the fixing sleeve (421) is provided with a clamping groove (4211) for cooperating with a screwdriver.

10. A die-casting mold, characterized in that: The die-casting mold comprises: The die-casting mold in-mold spraying device according to any one of claims 1 to 9.

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