Production structure and production method suitable for valve products

Abstract

The invention discloses a production structure and a production method suitable for valve type products, and relates to the field of rubber forming equipment, the production structure suitable for the valve type products comprises a first forming part, a second forming part and a mold core, and the first forming part and the second forming part are matched to form a forming cavity; the mold core is located in the forming cavity, the mold core is matched with the first forming part and the second forming part to adjust the forming cavity, a positioning pin is arranged on the mold core, and the mold core is positioned through the positioning pin; the first forming part is provided with a material injection opening, the material injection opening communicates with the forming cavity and is arranged corresponding to the position of the positioning pin, and materials enter the forming cavity through the material injection opening and are matched with the mold core for forming. The problems that in the prior art, due to poor positioning and material injection, formed flashes of the valve are caused, and the valve is not prone to falling off can be solved.

Description

Technical Field

[0001] This invention relates to the field of rubber molding equipment, and in particular to a production structure and method suitable for valve products. Background Technology

[0002] In the injection molding production of valves, the control and removal of flash has always been a key challenge affecting product quality, production efficiency, and cost. As critical components in fluid control, valves require extremely high dimensional accuracy of their sealing surfaces, surface finish, and cleanliness of their internal flow channels. Even minute flash residue, especially at the mating surfaces of valve seats and valve cores, or in complex internal flow channels, can directly compromise the seal, leading to valve leakage and severely impacting product performance and lifespan.

[0003] In traditional mold structures, flash mainly arises from the failure of the mold parting surface, insert mating surface, and gaps between moving parts to be completely sealed during high-pressure melt injection.

[0004] To control flash, current technologies include: Existing technology (CN102699091A) uses interlocking curved tooth structures on the mold parting surface to mechanically restrict the lateral flow of metal material, thereby avoiding the formation of macroscopic flash. However, this solution is based on the process principle of plastic deformation of solid metal, and its design concept is difficult to directly apply to the molding process of polymer melts such as plastics and rubber. Polymer melts have low viscosity and high fluidity, easily penetrating microscopic gaps, and the mold undergoes thermal deformation at high temperatures. Simple mechanical blocking structures cannot achieve reliable dynamic sealing, especially in local areas such as deep cavities and insert mating surfaces, where the effect is limited.

[0005] Meanwhile, existing technology (CN118269183A) discloses an automatic trimming mold for water valve sealing rings, which removes flash from the formed product by setting a cutter head and a punching chamber. Although this method can automate flash removal and improve post-processing efficiency, the generation of flash itself consumes additional materials, and the punching process may cause stress or leave marks on the product body.

[0006] In summary, existing technical solutions have significant limitations: anti-flash structures suitable for metal molding cannot solve the microscopic material leakage problem in polymer molding; and subsequent trimming techniques cannot fundamentally improve the molding quality of the product itself, and lack the ability to handle complex structures. Therefore, for plastic and rubber valve products with high precision and high cleanliness requirements, the industry urgently needs an innovative molding die solution that can achieve an active, adaptive, and reliable dynamic seal at key local interfaces prone to flash during polymer injection / compression molding, and can promptly eliminate flash during demolding, achieving high-quality, high-efficiency net-shape production. Summary of the Invention

[0007] This invention provides a suitable manufacturing structure and method for valve products, which can solve the problem in the prior art where poor positioning and material injection lead to flash in valve molding and difficulty in removing the flash.

[0008] To address the above problems, this invention provides a manufacturing structure suitable for valve products, comprising: A first molding component and a second molding component are fitted together to form a molding cavity; The mold core is located inside the molding cavity. The mold core works with the first molding part and the second molding part to adjust the molding cavity. The mold core is provided with a positioning pin, and the mold core is positioned by the positioning pin. A sprue is provided on the first molded part. The sprue is connected to the molding cavity and is set at the position of the positioning pin. The material enters the molding cavity through the sprue and is molded in conjunction with the mold core.

[0009] The present invention provides a manufacturing structure suitable for valve products, which, compared with the prior art, has the following beneficial effects, but is not limited thereto: By setting the injection port to correspond to the mold core positioning pin and combining it with the precise fit of the first and second molding parts, the mold core is accurately positioned and stably supported in the molding cavity, thereby effectively controlling the mold closing clearance and optimizing the melt filling path. This basic design reduces material overflow caused by component misalignment or uneven filling from the source. At the same time, when the mold opens, the flash produced when the first and second molding parts separate can adhere to the first or second molding parts, allowing the flash to be directly removed from the molding die without manual special handling. This significantly reduces the risk of flash on the parting surface and critical parts of valve products, while improving product dimensional accuracy and molding quality.

[0010] Preferably, the second molded part has a molding boss on one side facing the first molded part. The molding boss is arranged in a ring shape, and the mold core is sleeved on the molding boss, with the molding boss limiting the mold core.

[0011] Preferably, a fixing groove is provided on the forming boss, and the positioning pin is fixed on the forming boss through the fixing groove; The mold core has a positioning hole corresponding to the position of the positioning pin. The positioning pin is located in the positioning hole, and the mold core is positioned by the cooperation of the positioning pin and the positioning hole.

[0012] Preferably, a cooling channel is provided inside the mold core, and a first cooling port is provided on the mold core at the position corresponding to the second molded part, and the first cooling port is connected to the cooling channel; The second molded part has a second cooling port at the position corresponding to the first cooling port. The second cold cut is connected to a cooling device. The cooling device transports refrigerant through the second cooling port and the first cooling port into the cooling channel.

[0013] Preferably, the central axis of the injection port is set at an acute angle to the central axis of the positioning pin.

[0014] Preferably, the inner wall of the injection port is provided with a spiral guide groove, which extends along the axial direction of the injection port.

[0015] Preferably, the injection port on the first molded part is provided with an installation cavity corresponding to the position of the positioning pin. The radius of the installation cavity is larger than the radius of the positioning pin. When the first molded part and the second molded part are assembled together, the end of the positioning pin facing the first molded part is located in the installation cavity, and a flow cavity is formed between the positioning pin and the installation cavity, and the flow cavity communicates with the molding cavity.

[0016] Preferably, a first magnetic element is provided on the outer side of the mounting cavity, and a second magnetic element is provided on the positioning pin corresponding to the position of the mounting cavity. The first magnetic element and the second magnetic element attract each other so that the positioning pin is positioned at the corresponding position of the mounting cavity.

[0017] Preferably, this application embodiment also provides a production method for producing a suitable valve product manufacturing structure, the production method comprising the following steps: S1: Install a mold core on the second molded part, so that the first cooling port on the mold core is connected with the second cooling port on the second molded part, drive the first molded part and the second molded part to close the mold, so that the mold core is positioned in the molding cavity, and the first molded part is positioned and installed by the cooperation of the first magnetic component and the second magnetic component. S2: Molten material is injected into the molding cavity through the injection port, so that the material fills and shapes the mold core; S3: During the injection and molding process, the end of the positioning pin is stably maintained in the set position in the mounting cavity by the mutual adsorption of the first magnetic component and the second magnetic component, so as to seal the inlet end of the flow cavity. S4: Start the cooling equipment to allow the refrigerant to flow through the second cooling port and the first cooling port and enter the cooling channel of the mold core to cool the mold core internally; S5: After the material has solidified, drive the first molding part and the second molding part to separate and remove the molded product.

[0018] The production method provided by this invention has, but is not limited to, the following beneficial effects compared to the prior art: By integrating mold closing, injection, dynamic sealing and pressure holding, directional cooling, and mold opening and part removal into an orderly and coordinated process flow, a highly efficient, controllable, and high-quality molding process is constructed. This method introduces an active dynamic sealing control strategy in the core injection and pressure holding stages, effectively suppressing the generation of flash, and simultaneously effectively removing flash during demolding.

[0019] Preferably, in step S3, the first magnetic component is an electromagnetic assembly; the method further includes: After S1 is completed, the electromagnetic component is energized to generate an attraction force on the second magnetic component; Before starting S5, the electromagnetic component is powered off to release the adsorption force. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an overall schematic diagram of a production structure applicable to valve products according to an embodiment of the present invention; Figure 2 This is a side sectional view of a valve product manufacturing structure according to an embodiment of the present invention; Figure 3 for Figure 2 Schematic diagram of the structure of area A in the middle; Figure 4 for Figure 3 Schematic diagram of local structure Figure 1 ; Figure 5 for Figure 3 Schematic diagram of local structure Figure 2 ; Figure 6 for Figure 3 Schematic diagram of local structure Figure 3 ; Figure 7 This is a schematic diagram of a production method for valve products according to an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures: 100. First molding part; 101. Injection port; 102. Spiral guide groove; 103. Mounting cavity; 200. Second molding part; 201. Molding boss; 202. Fixing groove; 203. Second cooling port; 300. Mold core; 301. Locating pin; 302. Locating hole; 303. Cooling channel; 304. First cooling port; 400. Molding cavity; Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0024] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.

[0028] like Figures 1 to 6 As shown in the figure, an embodiment of the present invention provides a production structure applicable to valve products, including a first molding part 100, a second molding part 200, and a mold core 300. The first molding part 100 and the second molding part 200 cooperate to form a molding cavity 400. The mold core 300 is located in the molding cavity 400. The mold core 300 cooperates with the first molding part 100 and the second molding part 200 to adjust the molding cavity 400. The mold core 300 is provided with a positioning pin 301, and the mold core 300 is positioned by the positioning pin 301. The first molding part 100 is provided with a material injection port 101, which is connected to the molding cavity 400 and is positioned corresponding to the positioning pin 301. Material enters the molding cavity 400 through the material injection port 101 and cooperates with the mold core 300 to form the material.

[0029] In this embodiment of the application, the second molded part 200 has a molding boss 201 on one side facing the first molded part 100. The molding boss 201 is arranged in a ring shape, and the mold core 300 is sleeved on the molding boss 201. The molding boss 201 limits the mold core 300.

[0030] In the above structure, the protruding structure of the forming boss 201 allows the mold core 300 to be fitted onto the forming boss 201. In this embodiment of the application, the mold core 300 is configured with two vertical structural members and one horizontal structural member. The two vertical structural members are connected by one horizontal structural member, so that the two vertical structural members and the horizontal structural member surround and form a structural cavity. The forming boss 201 is located in the structural cavity to structurally limit the mold core 300 and prevent the mold core 300 from shaking in the forming cavity 400, which would cause loss of accuracy after molding.

[0031] In this embodiment, the forming boss 201 is provided with a fixing groove 202, and the positioning pin 301 is fixed on the forming boss 201 through the fixing groove 202; the mold core 300 is provided with a positioning hole 302 corresponding to the position of the positioning pin 301, the positioning pin 301 is located in the positioning hole 302, and the mold core 300 is positioned by the cooperation of the positioning pin 301 and the positioning hole 302.

[0032] In the above structure, the positioning pin 301 is threaded to the fixing groove 202, and the thread depth is less than the overall length of the positioning pin 301, so that when the positioning pin 301 is fully installed in the fixing groove 202, the end of the positioning pin 301 will be located facing the positioning hole 302.

[0033] In this embodiment, since the mold core 300 is sleeved on the forming boss 201, the inner wall of its structural cavity is in contact with the outer wall of the forming boss 201. At this time, the positioning hole 302 on the mold core 300 will correspond to the position of the positioning pin 301 in the fixing groove 202. The end of the positioning pin 301 passes through the positioning hole 302. The initial positioning of the mold core 300 on the forming boss 201 is achieved through the gap fit between the positioning pin 301 and the positioning hole 302.

[0034] This dual positioning method, which combines the circumferential limiting of the molding boss 201 on the mold core 300 with the precise axial positioning of the mold core 300 by the positioning pin 301, effectively ensures the positional accuracy of the mold core 300 within the molding cavity 400, preventing displacement or deflection during mold closing and injection molding, thereby ensuring the molding dimensional accuracy of the valve product.

[0035] In this embodiment, a cooling channel 303 is provided inside the mold core 300, and a first cooling port 304 is provided on the mold core 300 at a position corresponding to the second molded part 200. The first cooling port 304 is connected to the cooling channel 303. A second cooling port 203 is provided on the second molded part 200 at a position corresponding to the first cooling port 304. The second cold cut is connected to a cooling device, and the cooling device transports refrigerant through the second cooling port 203 and the first cooling port 304 into the cooling channel 303.

[0036] In this embodiment, the cooling channels 303 are distributed along the structural direction of the mold core 300 inside the mold core 300. The cooling channels 303 can increase the contact area between the refrigerant and the mold core 300, thereby improving the cooling efficiency of the molding cavity 400. A sealing gasket is provided between the first cooling port 304 and the second cooling port 203 to ensure that the refrigerant does not leak during transmission. The cooling equipment can precisely control the temperature and flow rate of the refrigerant according to the characteristics of the molding material and the thickness of the product, so as to achieve gradient cooling or uniform cooling of the mold core 300, avoiding internal stress or surface defects such as shrinkage marks and dents caused by uneven cooling. For example, for the valve body part with a large thickness, the cooling and solidification can be accelerated by reducing the temperature of the refrigerant and increasing the flow rate; while for the sealing surface area with high precision requirements, a relatively gentle cooling rate can be used to ensure its dimensional stability.

[0037] In this embodiment, the refrigerant is set as a cooling gas, specifically compressed air or inert gas nitrogen. The cooling gas can quickly fill the cooling channel 303 inside the mold core 300 and remove the heat absorbed by the mold core 300 from the molten material.

[0038] In this embodiment of the application, the central axis of the injection port 101 is set at an acute angle to the central axis of the positioning pin 301.

[0039] The injection port 101, which is conical in shape, is provided on the first molded part 100. The central axis of the injection port 101 is set at an acute angle with the central axis of the positioning pin 301 on the mold core 300.

[0040] In this embodiment of the application, the size of the acute angle is controlled between 5 degrees and 30 degrees.

[0041] The structure with an acute angle causes the flow direction of the high-pressure material to deviate from the central axis of the mold core 300 when the high-pressure material is ejected from the injection port 101. This deviation will naturally force the material flow to deflect and rotate after hitting the cavity wall or the side of the mold core 300, thereby forming a vortex flow around the mold core 300 in the molding cavity 400.

[0042] This structure can promote uniform filling of material in the molding cavity 400 and reduce the generation of air bubbles and weld lines. On the other hand, the impact force of the material has a component force with the axial direction of the positioning pin 301. This component force can further assist the tight fit between the positioning pin 301 and the positioning hole 302, enhance the stability of the mold core 300 in the injection molding process, and avoid flash or dimensional deviation caused by the position displacement of the mold core 300 due to material impact.

[0043] In this embodiment of the application, the inner wall of the injection port 101 is provided with a spiral guide groove 102, which extends along the axial direction of the injection port 101.

[0044] The spiral guide channel 102 has a semi-circular cross-section, with its pitch gradually decreasing from the inlet end of the injection port 101 to the outlet end, and its depth gradually increasing from the inlet end to the outlet end. When the molten material flows through the injection port 101, the spiral guide channel 102 can forcibly guide the material flow, causing it to form a stable spiral flow. This spiral flow can not only effectively reduce the flow resistance of the material in the injection port 101 and reduce pressure loss, but also promote shearing and mixing between materials.

[0045] In this embodiment of the application, the injection port 101 on the first molded part 100 is provided with an installation cavity 103 corresponding to the position of the positioning pin 301. The radius of the installation cavity 103 is larger than the radius of the positioning pin 301. When the first molded part 100 and the second molded part 200 are assembled together, the end of the positioning pin 301 facing the first molded part 100 is located in the installation cavity 103, and a flow cavity is formed between the positioning pin 301 and the installation cavity 103. The flow cavity communicates with the molding cavity 400.

[0046] After the molten material is ejected from the injection port 101, it first enters the flow chamber. Since the radius of the mounting cavity 103 is larger than the radius of the positioning pin 301, the flow chamber provides a buffer area for the material. The material flows around the positioning pin 301 within the flow chamber, which further eliminates the impact fluctuations caused by the jet from the injection port 101, allowing the material to enter the various areas of the molding cavity 400 in a more stable state.

[0047] In this embodiment, a first magnetic element is provided on the outer side of the mounting cavity 103, and a second magnetic element is provided on the positioning pin 301 corresponding to the position of the mounting cavity 103. The first magnetic element and the second magnetic element attract each other so that the positioning pin 301 is located at the corresponding position of the mounting cavity 103.

[0048] The first magnetic component is a ring-shaped permanent magnet, embedded in a groove on the inner wall of the mounting cavity 103 near the opening end; the second magnetic component is a permanent magnet ring coaxially arranged with the positioning pin 301, fixedly sleeved on the outer periphery of the end of the positioning pin 301 facing the mounting cavity 103. When the first molded part 100 and the second molded part 200 are molded together, with the mold closing, a gradually increasing axial attraction force is generated between the first magnetic component and the second magnetic component. This attraction force acts on the positioning pin 301, enabling it to automatically align with the center position during the process of entering the mounting cavity 103, realizing the pre-positioning of the mold core 300, and reducing the risk of mechanical collision between the positioning pin 301 and the positioning hole 302 and the mounting cavity 103 during the mold closing process.

[0049] Meanwhile, during the injection molding process, the continuous magnetic adsorption force can offset some of the lateral impact force generated by the material flow on the mold core 300, further enhancing the tightness of the fit between the mold core 300 and the molding boss 201 and the first molded part 100, and suppressing the generation of flash. Especially for parts that are prone to flash, such as the mold parting surface or the gap between the mold core 300 and the molded part, a better dynamic sealing effect can be achieved through magnetic pre-tightening force.

[0050] This application embodiment also provides a production method for producing a manufacturing structure suitable for valve products, the production method comprising the following steps: S1: Install the mold core 300 on the second molding part 200, so that the first cooling port 304 on the mold core 300 is connected with the second cooling port 203 on the second molding part 200, drive the first molding part 100 and the second molding part 200 to close the mold, so that the mold core 300 is positioned in the molding cavity 400, and the first molding part 100 is positioned and installed by the cooperation of the first magnetic component and the second magnetic component; S2: Molten material is injected into the molding cavity 400 through the injection port 101, so that the material fills and shapes around the mold core 300; S3: During the injection and molding process, the end of the positioning pin 301 is stably maintained in the set position in the mounting cavity 103 by the mutual adsorption of the first magnetic component and the second magnetic component, so as to seal the inlet end of the flow cavity. S4: Start the cooling equipment to allow the refrigerant to flow through the second cooling port 203 and the first cooling port 304 and enter the cooling channel 303 of the mold core 300 to internally cool the mold core 300; S5: After the material has solidified, drive the first molding part 100 and the second molding part 200 to separate and remove the molded product.

[0051] In the above method, specifically, in S1, the structural cavity of the mold core 300 is aligned with the forming boss 201 on the second molding part 200, so that the outer wall of the forming boss 201 fits against the inner wall of the structural cavity. At this time, the positioning hole 302 on the mold core 300 corresponds to the position of the positioning pin 301 in the fixing groove 202 on the forming boss 201. The end of the positioning pin 301 passes through the positioning hole 302, realizing the initial positioning of the mold core 300 on the forming boss 201. The first molding part 100 is moved towards the second molding part 200 for mold closing. As the mold closing process proceeds, the first magnetic component installed on the outside of the mounting cavity 103 and the second magnetic component at the end of the positioning pin 301 generate a gradually increasing axial adsorption force. Under the guidance of this adsorption force, the end of the positioning pin 301 accurately enters the mounting cavity 103, and the parting surface of the first molding part 100 and the second molding part 200 fits tightly together, completing the mold closing action.

[0052] In S2, molten material is injected from the injection port 101 at a set injection rate and pressure under the high pressure of the injection molding machine. When the material enters the injection port 101, the spiral guide groove 102 on the inner wall forces it to flow, causing the material to form a stable spiral flow. This spiral flow not only reduces the flow resistance of the material in the injection port 101 and reduces pressure loss, but also further improves the plasticization uniformity of the material through shearing and mixing between materials. Since the central axis of the injection port 101 and the central axis of the positioning pin 301 form an acute angle of 5 to 30 degrees, after the high-pressure material is injected, its flow direction deviates from the central axis of the mold core 300. This naturally forces the material flow to deflect and rotate after hitting the cavity wall or the side of the mold core 300, thus forming a vortex flow around the mold core 300 in the molding cavity 400. The material continues to fill the molding cavity 400 until it completely fills the entire molding space, wrapping the mold core 300 and forming the initial shape of the valve product.

[0053] In S3, the first magnetic component is an electromagnetic component; the method further includes: after the mold closing step is completed, energizing the electromagnetic component to generate an attraction force on the second magnetic component; and before the mold opening step begins, de-energizing the electromagnetic component to release the attraction force.

[0054] By controlling the on / off state of the electromagnetic components, the attraction force between the first and second magnetic components can be flexibly adjusted, providing a stable magnetic preload during the mold closing and injection molding pressure holding stages to ensure the positioning accuracy and tight fit of the mold core 300; while after the power is turned off during the mold opening stage, the attraction force disappears, which can avoid the increase in mold opening resistance caused by magnetic attraction, making it easier for the first molded part 100 and the second molded part 200 to separate smoothly and improve production efficiency.

[0055] In step S4, the cooling equipment starts according to preset cooling process parameters. The refrigerant enters the cooling channel 303 inside the mold core 300 through the second cooling port 203 and the first cooling port 304. The cooling channel 303 is distributed along the structural direction of the mold core 300, increasing the contact area between the refrigerant and the mold core 300. The cooling equipment precisely controls the temperature and flow rate of the refrigerant. For example, for areas with a large valve body thickness, the refrigerant temperature is reduced and the flow rate is increased to accelerate cooling and solidification; for areas with high precision requirements, such as sealing surfaces, a relatively gentle cooling rate is used to achieve gradient or uniform cooling. During the flow of the refrigerant in the cooling channel 303, it quickly absorbs the heat conducted from the molten material by the mold core 300, and then carries the heat out, causing the material in the molding cavity 400 to gradually cool and solidify.

[0056] In step S5, once the material in the molding cavity 400 has fully cooled and solidified to meet the set mold opening conditions, the injection molding machine drives the first molded part 100 and the second molded part 200 to separate along the parting surface. Since the electromagnetic components have been de-energized before mold opening, the attraction between the first and second magnetic components is released, facilitating mold opening. After separation, the molded product remains mounted on the mold core 300. The product is then removed from the mold core 300 via a subsequent ejection mechanism or manual operation, completing one cycle of valve product molding. After removing the product, the first molded part 100, the second molded part 200, and the mold core 300 are cleaned and inspected in preparation for the next production cycle.

[0057] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A manufacturing structure suitable for valve products, characterized in that, include: A first molding component (100) and a second molding component (200) are provided together to form a molding cavity (400). The mold core (300) is located inside the molding cavity (400). The mold core (300) works with the first molding part (100) and the second molding part (200) to adjust the molding cavity (400). The mold core (300) is provided with a positioning pin (301), and the mold core (300) is positioned by the positioning pin (301). A sprue (101) is provided on the first molded part (100). The sprue (101) is connected to the molding cavity (400) and the sprue (101) is set at the position corresponding to the positioning pin (301). The material enters the molding cavity (400) through the sprue (101) and is molded in conjunction with the mold core (300).

2. The manufacturing structure for valve products according to claim 1, characterized in that, The second molded part (200) has a molding boss (201) on one side facing the first molded part (100). The molding boss (201) is arranged in a ring shape. The mold core (300) is sleeved on the molding boss (201). The molding boss (201) limits the mold core (300).

3. The manufacturing structure for valve products according to claim 2, characterized in that, The forming boss (201) is provided with a fixing groove (202), and the positioning pin (301) is fixed on the forming boss (201) through the fixing groove (202); The mold core (300) has a positioning hole (302) at the position corresponding to the positioning pin (301). The positioning pin (301) is located in the positioning hole (302). The mold core (300) is positioned by the cooperation of the positioning pin (301) and the positioning hole (302).

4. The manufacturing structure for valve products according to claim 2, characterized in that, The mold core (300) is provided with a cooling channel (303) inside, and a first cooling port (304) is provided on the mold core (300) at the position corresponding to the second molded part (200), and the first cooling port (304) is connected to the cooling channel (303). The second molded part (200) has a second cooling port (203) at the position corresponding to the first cooling port (304). The second cooling port (203) is connected to a cooling device. The cooling device transports refrigerant through the second cooling port (203) and the first cooling port (304) into the cooling channel (303).

5. The manufacturing structure for valve products according to claim 1, characterized in that, The central axis of the injection port (101) is set at an acute angle to the central axis of the positioning pin (301).

6. The manufacturing structure for valve products according to claim 5, characterized in that, The inner wall of the injection port (101) is provided with a spiral guide groove (102), which extends along the axial direction of the injection port (101).

7. The applicable valve product manufacturing structure according to claim 1, characterized in that, The injection port (101) on the first molded part (100) is provided with an installation cavity (103) corresponding to the position of the positioning pin (301). The radius of the installation cavity (103) is larger than the radius of the positioning pin (301). When the first molded part (100) and the second molded part (200) are assembled together, the end of the positioning pin (301) facing the first molded part (100) is located in the installation cavity (103), and a flow cavity is formed between the installation cavity (103) and the positioning pin (301). The flow cavity is connected to the molding cavity (400).

8. The applicable valve product manufacturing structure according to claim 7, characterized in that, A first magnetic element is provided on the outer side of the mounting cavity (103), and a second magnetic element is provided on the positioning pin (301) corresponding to the position of the mounting cavity (103). The first magnetic element and the second magnetic element attract each other so that the positioning pin (301) is located at the corresponding position of the mounting cavity (103).

9. A production method, employing the production structure for applicable valve products as described in any one of claims 1 to 8, characterized in that, The production method includes the following steps: S1: Install a mold core (300) on the second molded part (200) so that the first cooling port (304) on the mold core (300) is connected to the second cooling port (203) on the second molded part (200), drive the first molded part (100) and the second molded part (200) to close the mold, so that the mold core (300) is positioned in the molding cavity (400), and the first molded part (100) is positioned and installed by the cooperation of the first magnetic component and the second magnetic component; S2: Molten material is injected into the molding cavity (400) through the injection port (101) so that the material fills and shapes around the mold core (300); S3: During the injection and molding process, the end of the positioning pin (301) is stably maintained in the set position in the mounting cavity (103) by the mutual adsorption of the first magnetic component and the second magnetic component, so as to seal the inlet end of the flow cavity. S4: Start the cooling equipment to allow the refrigerant to flow through the second cooling port (203) and the first cooling port (304) and enter the cooling channel (303) of the mold core (300) to internally cool the mold core (300); S5: After the material has solidified, drive the first molding part (100) to separate from the second molding part (200) and take out the molded product.

10. A production method according to claim 9, characterized in that, In step S3, the first magnetic component is an electromagnetic assembly; the method further includes: After S1 is completed, the electromagnetic component is energized to generate an attraction force on the second magnetic component; Before starting S5, the electromagnetic component is powered off to release the adsorption force.

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