A die-casting mold

Abstract

The utility model relates to the field of die casting process technology provides a kind of die casting die, comprising: mould frame;Slide block assembly, it is set on mould frame, and have the slide block of sliding arrangement and the core of being fixed in slide block, core has forming position and mold opening position, slide block is used to drive core switches between forming position and mold opening position;When located forming position, core is used to participate in the internal structure of forming product;When located mold opening position, core is separated from the product after forming;Spraying assembly, it has the spray head of being arranged in mould frame;By integrating spray head in mould frame, when core is in mold opening position, spray head is located below core and sprays release agent to the lower surface area of core, solve the technical problem that core lower surface is difficult to spray due to structural shading in traditional process, avoid the problems such as sticking, demolding difficulty, mould damage caused by insufficient lubrication and cooling, to improve casting quality.

Description

Technical Field

[0001] This utility model belongs to the field of die casting technology, and specifically relates to a die casting mold. Background Technology

[0002] During die casting, a release agent needs to be sprayed into the mold cavity after each casting is removed. For molds with core structures that extend deep into the cavity, the lower surface (the contact surface opposite to the bottom wall of the cavity) is often obscured due to the narrow gap between the core and the cavity block, creating a spraying dead zone. In existing technologies, workers often use handheld spray guns to spray the opened mold cavity. However, due to limitations in spray gun size and manual operation precision, it is difficult to effectively spray the release agent into hidden areas such as the lower surface of the core.

[0003] If the mold release agent is not evenly sprayed in a local area of ​​the mold cavity, the following problems will occur during the subsequent high-temperature and high-pressure molten metal filling process: First, the area lacking mold release agent lacks the necessary lubrication and heat insulation, and the molten metal comes into direct contact with the mold surface, increasing friction and making demolding difficult; Second, the temperature in this area rises sharply due to the loss of the cooling function of the mold release agent, causing the mold surface material to soften or oxidize during tempering, resulting in deterioration of surface roughness, which in turn leads to adhesion between the molten metal and the mold surface; In severe cases, during the mold opening or ejection process, the adhesion between the casting and the mold may cause forced tearing, resulting in casting defects or mold damage, or even mechanical scratches.

[0004] The above problems not only affect the surface quality and dimensional accuracy of castings, but also significantly shorten the service life of molds, reduce production efficiency and product qualification rate. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, the technical problem this invention aims to solve is: to propose a die-casting mold that integrates a directional spray nozzle within the mold frame. When the core is in the mold-opening position, the nozzle is positioned below the core and sprays a release agent onto the lower surface area of ​​the core. This solves the technical problem of difficulty in spraying the lower surface of the core due to structural obstruction in traditional processes, and avoids problems such as mold sticking, difficult demolding, and mold damage caused by insufficient lubrication and cooling. This improves the quality of castings, extends mold life, and enhances the degree of automation and efficiency in production.

[0006] The technical solution adopted by this utility model to solve its technical problem is to propose a die-casting mold, comprising:

[0007] Module frame;

[0008] A slider assembly is disposed on the mold frame and has a slider that is slidably disposed and a core fixed on the slider. The core has a forming position and a mold opening position, and the slider is used to drive the core to switch between the forming position and the mold opening position.

[0009] When in the forming position, the core is used to participate in the internal structure of the molded product; when in the mold opening position, the core separates from the molded product.

[0010] A spraying assembly having a nozzle disposed within the mold frame;

[0011] When the core is in the mold-opening position, the nozzle is located below the core and is used to spray a release agent onto the core.

[0012] In the aforementioned die-casting mold, a receiving hole is provided inside the mold frame, and the nozzle is disposed inside the receiving hole.

[0013] In one of the die-casting molds described above, a through-flow channel is provided on the mold frame, the channel passing through the receiving hole and communicating with the nozzle.

[0014] In one of the die-casting molds described above, the spraying assembly further includes a connector disposed at the end of the flow channel away from the nozzle and connected to the release agent supply device via a pipe for supplying the release agent into the flow channel.

[0015] In one of the die-casting molds described above, the slider assembly further includes a slider seat, the slider being fixedly mounted on the slider seat, and the slider seat being used to drive the slider to move.

[0016] In the aforementioned die-casting mold, a slide rail is also provided on the mold frame, and a sliding groove is provided on the slider seat. The slider seat is slidably mounted on the slide rail through the sliding groove.

[0017] In the aforementioned die-casting mold, a guide block is fixed on the mold frame, and a guide portion is provided on the side wall of the slider seat. The slider seat slides against the guide block through the guide portion.

[0018] In the aforementioned die-casting mold, a support block is provided on the mold frame. The support block is located on the side of the slide rail, and the slider seat movably abuts against the support block to provide support for the slider seat.

[0019] In the aforementioned die-casting mold, a driving component is provided on the mold frame, and a stepped shaft is provided at the output end of the driving component. The stepped shaft is connected to the slider seat, and the driving component drives the slider seat to slide through the stepped shaft.

[0020] In the aforementioned die-casting mold, a T-shaped groove is provided on the slider seat, the stepped shaft is connected in the T-shaped groove, and the large end of the stepped shaft is embedded in the large end of the T-shaped groove.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) By integrating a directional nozzle into the mold frame, when the core is in the mold opening position, the nozzle is located below the core and sprays the release agent onto the lower surface area of ​​the core. This solves the technical problem that the lower surface of the core is difficult to spray due to structural obstruction in the traditional process, and avoids problems such as sticking, difficult demolding, and mold damage caused by insufficient lubrication and cooling. This improves the quality of castings, extends the mold life, and increases the degree of automation and efficiency of production.

[0023] (2) By setting flow channels on the mold frame body to realize the directional delivery of release agent, the flow rate and pressure stability during the medium transmission process are effectively guaranteed, and the consistency and uniformity of the nozzle atomization effect are ensured. At the same time, the integrated flow channel design does not require the arrangement of complex pipelines leading to the bottom of the core outside the mold, which greatly simplifies the external pipeline layout, reduces the risk of pipeline entanglement, wear and interference with the slider or part removal mechanism, and improves the reliability and cleanliness of the production line operation.

[0024] (3) By setting a slider seat to support the slider and driving it to slide through a stepped shaft, combined with the guiding cooperation of the slide rail and the sliding groove, the lateral limiting of the guide block and the guide part, and the bottom support of the support block on the slider seat, a multi-dimensional collaborative motion constraint system is constructed, which effectively resists the lateral expansion force and off-center stress during the molten metal filling process, thereby ensuring the smooth movement and accurate positioning of the slider, preventing jamming, offset or structural deformation, and significantly improving the operational stability and long-term reliability of the core pulling mechanism. Attached Figure Description

[0025] Figure 1 This is a 3D view of the proposed solution.

[0026] Figure 2 yes Figure 1 A three-dimensional view of another orientation.

[0027] Figure 3 This is the floor plan of this project.

[0028] Figure 4 yes Figure 3 Sectional view of AA.

[0029] Figure 5 yes Figure 2 A 3D view of the hidden part of the structure.

[0030] Figure 6 This is a 3D view of the slider assembly in this solution.

[0031] In the figure, 1 is the mold frame; 2 is the slider assembly; 3 is the slider; 4 is the core; 5 is the spraying assembly; 6 is the nozzle; 7 is the receiving hole; 8 is the flow channel; 9 is the connector; 10 is the slider seat; 11 is the slide rail; 12 is the sliding groove; 13 is the guide block; 14 is the guide part; 15 is the support block; 16 is the stepped shaft; and 17 is the T-slot. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] like Figures 1 to 6 As shown, this solution provides a die-casting mold, comprising: a mold frame 1; a slider assembly 2, which is disposed on the mold frame 1 and has a slider 3 that is slidably disposed and a core 4 fixed on the slider 3. The core 4 has a forming position and a mold opening position. The slider 3 is used to drive the core 4 to switch between the forming position and the mold opening position. When it is in the forming position, the core 4 is used to participate in the internal structure of the molded product. When it is in the mold opening position, the core 4 is separated from the molded product. A spraying assembly 5, which has a spray nozzle 6 disposed in the mold frame 1. When the core 4 is in the mold opening position, the spray nozzle 6 is located below the core 4 and is used to spray a release agent onto the core 4.

[0035] During the die-casting process, after the mold opens, the slider 3 moves the core 4 to the preset mold opening position, and the casting is removed. Then, the nozzle 6 activates, precisely spraying atomized release agent upwards, directly covering the lower surface area of ​​the core 4. Due to the optimized design of the nozzle 6, which is close to the bottom of the core 4 and whose spray direction forms a reasonable angle with the surface of the core 4, even under complex structural conditions with narrow gaps between the core 4 and surrounding cavity blocks, the release agent can still be ensured to adhere fully to the lower surface of the core 4 in a uniform atomized form, achieving a lubrication and cooling effect with no dead angles and high coverage. Meanwhile, for other areas of the mold, such as the main cavity, parting surface, and ejector pins, external automatic spraying systems or manual respraying are used as supplementary means to ensure the complete coverage of release agent in critical areas.

[0036] This solution integrates a directional spray nozzle 6 within the mold frame 1, enabling precise spraying of the lower surface of the core 4. This solves the technical problem of uneven or difficult spraying of the release agent in this area due to structural obstruction in traditional processes. It effectively avoids problems such as sticking, difficult demolding, and mold damage caused by insufficient lubrication and cooling, thereby significantly improving the surface quality of the casting, extending the service life of the mold, and increasing production efficiency.

[0037] More preferably, the mold frame 1 is provided with a receiving hole 7, and the nozzle 6 is disposed within the receiving hole 7. The receiving hole 7 is used for precise positioning and secure installation of the nozzle 6, preventing displacement or vibration during high-pressure spraying or mold operation, and ensuring the stability and repeatability of the spraying direction. At the same time, the structure of the receiving hole 7 can effectively protect the nozzle 6, reducing damage caused by high temperature, metal splashes, and mechanical impacts, and extending the service life of the nozzle 6.

[0038] More preferably, the mold frame 1 is provided with a through-flow channel 8, which passes through the receiving hole 7 and is connected to the liquid inlet of the nozzle 6. This is used to efficiently and directionally deliver the release agent from the external feeding system to the nozzle 6. The flow channel 8 is an internal through-hole directly machined into the body of the mold frame 1, and its inner wall is precision-machined to have a smooth surface, thereby reducing flow resistance and ensuring stable flow and pressure of the release agent during delivery, thus guaranteeing the consistency and uniformity of the atomization effect of the nozzle 6.

[0039] More preferably, the spraying assembly 5 also includes a connector 9, which is located at the end of the flow channel 8 away from the nozzle 6 and is connected to the release agent supply equipment via a pipe for supplying release agent into the flow channel 8.

[0040] In one embodiment, the flow channel 8 serves as a direct flow path, with its outlet end sealed to the liquid inlet of the nozzle 6, and its inlet end connected to an external supply pipeline via a connector 9, thereby achieving seamless introduction of the release agent.

[0041] In another embodiment, a corrosion-resistant and pressure-resistant flexible or rigid delivery pipe can be installed within the flow channel 8 holes to form an independent, sealed flow channel, with its outlet end connected to the nozzle 6. This structure effectively isolates the release agent from contact with the mold frame 1 body, avoiding corrosion or scaling caused by long-term use, while also facilitating the replacement and maintenance of the delivery pipe.

[0042] Connector 9 is located at the inlet end of the flow channel 8 or the delivery pipe, serving as a transition interface between the in-mold guiding system and the external material supply equipment. It features excellent sealing performance and quick assembly / disassembly capabilities, facilitating equipment debugging and routine maintenance. Through this connection structure, the release agent can be precisely controlled by a central material supply system or an independent metering pump, achieving on-demand quantitative supply, optimizing spraying dosage, and improving process controllability.

[0043] Since the flow channel 8 is integrated inside the mold frame 1, only a short pipe needs to be connected to the connector 9 on the outside. There is no need to arrange long and complex pipelines leading to the area below the core 4. This effectively simplifies the external structure of the mold, avoids interference of pipelines with the movement of the slider 3, the part picking robot and other automated operations, and improves the safety and cleanliness of the production line operation.

[0044] In summary, the above structural design achieves a high degree of integration and embedding of the release agent spraying system:

[0045] Improved system reliability: The nozzle 6 is built into the receiving hole 7 of the mold frame 1, which is protected by the structure, has strong anti-interference ability, and stable operation;

[0046] Optimized fluid pathway: The flow channel 8 is directly connected to the nozzle 6, resulting in a short transmission path, low flow resistance, fast response speed, and sensitive start and stop of spraying.

[0047] Enhanced maintainability and compatibility: Connects to external feeding systems via standardized connector 9, supporting quick replacement and adaptation to multiple production lines;

[0048] Supports automated control: It can be linked with the die-casting machine control system to achieve precise spraying timing control synchronized with actions such as mold opening and ejection, thereby improving the consistency of production cycle time;

[0049] Improve the overall layout of the mold: reduce the layout of external pipelines, reduce the risk of entanglement and wear, and facilitate the clean and intelligent management of the die casting unit.

[0050] Therefore, this integrated embedded spraying structure not only effectively solves the problem of spraying blind spots on the lower surface of the core 4 caused by structural shielding, but also significantly improves system stability, maintenance convenience, automation matching degree and mold space utilization, providing strong support for the efficient, stable and intelligent operation of the die casting process.

[0051] To move the slider 3, the slider assembly 2 also includes a slider seat 10, on which the slider 3 is fixed. The slider seat 10 is used to move the slider 3. The slider seat 10 serves as the support and driving base for the slider 3, effectively transmitting power to the slider 3. This ensures the smooth and precise movement of the slider 3 along a predetermined trajectory, guaranteeing the repeatability and positioning accuracy of the core-pulling action.

[0052] More preferably, the mold frame 1 is further provided with a slide rail 11, and the slider seat 10 is provided with a sliding groove 12. The slider seat 10 is slidably mounted on the slide rail 11 through the sliding groove 12. The slider seat 10 slides and engages with the slide rail 11 on the mold frame 1 through the sliding groove 12, forming a stable guiding structure. The precise engagement between the slide rail 11 and the sliding groove 12 ensures that the slider 3 moves smoothly along a preset straight trajectory, avoiding core pulling jamming, core 4 tearing, or mold damage caused by off-center loading or vibration, and significantly improving the repeatability and stability of the core pulling action.

[0053] More preferably, a guide block 13 is fixed on the mold frame 1, and a guide portion 14 is provided on the side wall of the slider seat 10. The slider seat 10 slides against the guide block 13 through the guide portion 14. The guide block 13 and the guide portion 14 on the side wall of the slider seat 10 form a sliding abutment structure, which can withstand the lateral mold expansion force from the molten metal filling during the core pulling process of the slider 3, and prevent the slider seat 10 from shifting or tilting. This structure effectively distributes the guiding load of the slide rail 11, improves the rigidity and stability of the entire sliding system, and is particularly suitable for die casting conditions with large size or high clamping force.

[0054] More preferably, a support block 15 is provided on the mold frame 1, the support block 15 is located on the side of the slide rail 11, and the slider seat 10 is movably abutted against the support block 15 to provide support for the slider seat 10. Providing a support block 15 on the side of the slide rail 11 and allowing the slider seat 10 to movably abut against the support block 15 can provide continuous bottom support force during the slider seat 10's stationary or moving processes. Especially in applications with long strokes or large-mass sliders 3, this effectively prevents cantilever sagging, uneven guide rail wear, or structural deformation caused by its own weight, extends the service life of the sliding pair, and ensures long-term operational reliability.

[0055] More preferably, the mold frame 1 is provided with a driving component, and its output end is provided with a stepped shaft 16. The stepped shaft 16 is connected to the slider seat 10, and the driving component drives the slider seat 10 to slide through the stepped shaft 16.

[0056] In order to connect the stepped shaft 16 to the slider seat 10, a T-shaped groove 17 is provided on the slider seat 10. The stepped shaft 16 is connected in the T-shaped groove 17, and the large end of the stepped shaft 16 is embedded in the large end of the T-shaped groove 17.

[0057] The drive component is connected to the T-slot 17 on the slider seat 10 via the stepped shaft 16 at its output end, forming a robust mechanical connection structure. The large end of the stepped shaft 16 is embedded in the large end of the T-slot 17, which can withstand large tensile and compressive loads and effectively transmit driving torque, preventing loosening or disengagement. This connection method is simple in structure, easy to assemble and disassemble, and has good vibration resistance and dynamic response characteristics, ensuring accurate and rapid drive action. The connection structure between the T-slot 17 and the stepped shaft 16 can achieve a reliable connection without additional fasteners, simplifying the assembly process; at the same time, the connection between the slider seat 10 and the drive component can be quickly disassembled during maintenance, facilitating independent inspection and replacement of the slider 3, slider seat 10, or drive system, reducing maintenance costs and downtime. The drive component is preferably a hydraulic cylinder.

[0058] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0060] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A die-casting mold, characterized in that, include: Module frame; A slider assembly is disposed on the mold frame and has a slider that is slidably disposed and a core fixed on the slider. The core has a forming position and a mold opening position, and the slider is used to drive the core to switch between the forming position and the mold opening position. When in the forming position, the core is used to participate in the internal structure of the molded product; when in the mold opening position, the core separates from the molded product. A spraying assembly having a nozzle disposed within the mold frame; When the core is in the mold-opening position, the nozzle is located below the core and is used to spray a release agent onto the core.

2. The die-casting mold as described in claim 1, characterized in that, The mold frame is provided with a receiving hole, and the nozzle is disposed in the receiving hole.

3. The die-casting mold as described in claim 2, characterized in that, The mold frame is provided with a through flow channel, which passes through the receiving hole and communicates with the nozzle.

4. The die-casting mold as described in claim 3, characterized in that, The spraying assembly also includes a connector disposed at the end of the flow channel away from the nozzle and connected to the release agent supply device via a pipe for supplying the release agent into the flow channel.

5. The die-casting mold as described in claim 1, characterized in that, The slider assembly also includes a slider seat, on which the slider is fixedly mounted and the slider seat is used to drive the slider to move.

6. The die-casting mold as described in claim 5, characterized in that, The mold frame is also provided with a slide rail, and the slider seat is provided with a sliding groove. The slider seat is slidably mounted on the slide rail through the sliding groove.

7. The die-casting mold as described in claim 5, characterized in that, A guide block is fixed on the mold frame, and a guide part is provided on the side wall of the slider seat. The slider seat slides against the guide block through the guide part.

8. The die-casting mold as described in claim 6, characterized in that, A support block is provided on the mold frame. The support block is located on the side of the slide rail. The slider seat is movably abutted against the support block to provide support for the slider seat.

9. A die-casting mold as described in claim 5, characterized in that, The mold frame is provided with a driving component, and the output end of the driving component is provided with a stepped shaft. The stepped shaft is connected to the slider seat, and the driving component drives the slider seat to slide through the stepped shaft.

10. A die-casting mold as described in claim 9, characterized in that, The slider seat is provided with a T-shaped groove, the stepped shaft is connected in the T-shaped groove, and the large end of the stepped shaft is embedded in the large end of the T-shaped groove.

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