Die casting die with in-mold trim function

Abstract

The utility model relates to pressure casting process technical field provides a kind of pressure casting mould with in-mold material head function, comprising: fixed mould component, including fixed plate and movable plate;Movable mould component, movable plate and movable mould component jointly define cavity;Feedway, for supplying pressure casting material to cavity, feedway includes first section, set up in fixed plate;Second section, through movable plate and communicate with cavity;Temperature control unit, with the heat conduction connection of first section and second section junction, for the heat preservation of pressure casting material;Separation mechanism, set on fixed mould component, for in movable mould component and the initial stage of fixed mould component's mold opening, drive movable plate and fixed plate first separation, make the pressure casting material that has not completely solidified and the pressure casting material that has solidified fracture at the junction of first section and second section. The design not only realizes full-automatic material head, exempts from subsequent punching process, and also because of smaller separation force, effectively protected mould precision and prolonged service life.

Description

Technical Field

[0001] This utility model belongs to the field of die casting technology, specifically relating to a die casting mold with an in-mold material removal function. Background Technology

[0002] Die casting is one of the core processes in metal product manufacturing. With its advantages of high forming precision, high production efficiency, and good product consistency, it is widely used in the production of metal parts in the automotive, electronics, and hardware machinery industries. As the core equipment in die casting, the die casting mold's structural design directly determines the product's forming quality, the complexity of the production process, and production efficiency. In conventional die casting processes, molten metal is injected into the mold cavity through the mold's feed channel, and after cooling and solidification, it forms the product. The solidified metal sprue in the feed channel is connected to the product, and its removal must be done separately after the mold is opened and the part is removed.

[0003] In existing die-casting molds, after mold opening, the casting and the sprue are usually ejected from the mold as a whole, requiring secondary separation by manual labor, robotic arms, or specialized punching dies. This traditional post-processing method has many drawbacks: First, it increases additional production steps and equipment investment, not only reducing overall production efficiency but also significantly increasing labor and operating costs; second, for die-casting parts with complex structures or brittle materials, improper stress during secondary separation (especially punching or manual breaking) can easily lead to product deformation, cracking, or burr formation, severely affecting product yield and appearance quality; furthermore, the edges of the separated sprue are often quite sharp, posing certain safety hazards.

[0004] To address these issues, some technologies have emerged in the industry that attempt to separate the sprue from the mold core. For example, some molds are designed with runner plates that can move relative to the mold opening process, attempting to break the sprue from within the mold. However, these existing technologies typically face a key challenge: if the metal in the entire gating system cools and solidifies simultaneously, the bond strength at the parting line will be extremely high. Forcibly breaking the sprue requires enormous separation force, easily damaging related mold components, and the breakage location is difficult to control precisely, often failing to break cleanly at the intended position, and may even damage the product gate. Conversely, overheating the runner to ensure separation can affect the production cycle and even prevent the metal within the runner from solidifying, causing demolding difficulties. 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 with an in-mold material removal function. This mold uses a temperature control unit connected to the junction of the first and second sections of the feed channel for thermal conductivity, continuously maintaining the temperature of the die-casting material at this junction. This keeps the material in a semi-solid or highly plastic state during mold opening, while the remaining portion solidifies normally. In the initial stage of mold opening, in conjunction with the driving action of the separation mechanism, the low strength of the material at this junction is utilized to directly break the material head from the finished product inside the mold.

[0006] The technical solution adopted by this utility model to solve its technical problem is to propose a die-casting mold with an in-mold material removal function, comprising: A fixed mold assembly includes a fixed plate and a movable plate that can slide relative to the fixed plate along the mold opening direction; A moving mold assembly that can be opened and closed with the fixed mold assembly, wherein the side of the movable plate facing the moving mold assembly and the moving mold assembly together define a mold cavity for forming an article; A feed channel for supplying molten die-casting material to the mold cavity, the feed channel having the following characteristics along its length: The first section is located within the fixed plate; The second section extends through the thickness direction of the movable plate and communicates with the mold cavity; The temperature control unit is thermally connected to the junction of the first section and the second section, and is used to keep the die-casting material at the junction of the first section and the second section warm so that it remains in a partially solidified state when the mold is opened. A separation mechanism, which is disposed on the fixed mold assembly, is used to drive the movable plate to separate from the fixed plate in the initial stage of mold opening of the movable mold assembly and the fixed mold assembly, so that the incompletely solidified die casting material and the solidified die casting material break at the junction of the first section and the second section.

[0007] In the die-casting mold with in-mold stripping head function described above, a first flow channel plate is fixedly provided on the fixed plate, and a second flow channel plate is fixedly provided on the movable plate. The first flow channel plate forms the first section inside, and the second flow channel plate forms the second section inside. The first flow channel plate and the second flow channel plate are movable and fit together along the mold opening direction.

[0008] In the die-casting mold with in-mold stripping head function described above, a groove is provided on the end face of the first flow channel plate facing the second flow channel plate, and the groove and the upper end face of the second flow channel plate together form the flow channel cavity of the first section.

[0009] In the aforementioned die-casting mold with in-mold stripping head function, the second runner plate is embedded with an insert, and the second section passes through the insert.

[0010] In the aforementioned die-casting mold with in-mold stripping head function, the insert includes an integrally formed rectangular portion and a protruding structure. The second section passes through the rectangular portion and the protruding structure in sequence. The upper end face of the protruding structure fits and abuts against the bottom surface of the groove of the first flow channel plate, thereby realizing the docking and connection between the first section and the second section.

[0011] In the aforementioned die-casting mold with in-mold stripping head function, the temperature control unit includes a heat-insulating block, which is sleeved on the outer periphery of the protruding structure, and the upper end face of the heat-insulating block abuts against the bottom surface of the groove on the first flow channel plate. The heat-insulating block is provided with a heat-insulating channel for the flow of heat-insulating medium, and the heat-insulating medium flows in the heat-insulating channel to keep the die-casting material at the junction of the first section and the second section warm.

[0012] In the aforementioned die-casting mold with in-mold stripping head function, a cooling channel is also provided inside the rectangular section, and a cooling medium flows in the cooling channel to accelerate the cooling and solidification of the die-casting material located in the rectangular section of the second segment.

[0013] In the aforementioned die-casting mold with an in-mold stripping head function, the separation mechanism includes a driving component disposed on the fixed plate. The output end of the driving component is connected to the movable plate. The driving component is used to push the movable plate in the initial stage of mold opening, so that the movable plate separates from the fixed plate first.

[0014] In the die-casting mold with in-mold stripping head function described above, the fixed mold assembly is also provided with a limit component to limit the sliding stroke of the movable plate and to separate the movable plate from the moving mold assembly.

[0015] In the aforementioned die-casting mold with an in-mold stripping head function, the limiting component includes: A connecting rod, one end of which is fixed to the fixed plate, and the other end extends along the mold opening direction and slides through the movable plate; A limiting block is fixed to the end of the connecting rod away from the fixed plate, and a stop block is provided on the movable plate for abutting against the limiting block; After the movable plate slides a preset distance relative to the fixed plate, the stop block abuts against the limiting block, thereby limiting the sliding distance of the movable plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The temperature control unit is thermally connected to the junction of the first and second sections of the feed channel to continuously keep the die-casting material at the junction warm, so that it remains in a semi-solid or highly plastic state when the mold is opened, while the rest solidifies normally. In the early stage of mold opening, in conjunction with the driving action of the separation mechanism, the material at the junction is pulled off directly from the product inside the mold by taking advantage of the low strength of the material. This design not only realizes fully automatic material removal, eliminating the need for subsequent punching processes, but also effectively protects the mold precision and extends its service life due to the small separation force.

[0018] (2) In this design, a cooling channel is set inside the rectangular part of the second runner plate, and an insulating block with a heat-insulating medium is fitted around the outer periphery of the cylindrical protrusion at the junction. Through the synergistic effect of "local heat preservation" and "adjacent cooling", a significant temperature gradient is constructed inside the mold, thereby forming a clear solidification section and plastic transition zone. This precise thermodynamic control effectively prevents random shifts in the fracture position, avoids casting damage or runner residue caused by forced breakage, and greatly improves product yield.

[0019] (3) On the one hand, the feed channel adopts a split design (a first flow channel plate and a second flow channel plate with inserts). When the flow channel is worn, only the local inserts or flow channel plates need to be replaced, without the need for overall mold disassembly, which significantly reduces maintenance costs. On the other hand, the sliding stroke of the movable plate is precisely controlled by the limiting component composed of connecting rods and limiting blocks. During the mold opening process, the movable plate is first driven backward by the separation mechanism to cut off the material, and then the limiting component suspends the movable plate, and the moving mold component continues to retreat to complete the demolding. This step-by-step sequential action effectively avoids secondary processing damage and ensures the stability of demolding complex products. Attached Figure Description

[0020] Figure 1 This is a 3D view of the proposed solution.

[0021] Figure 2 This is a 3D view of the fixed mold component in this solution.

[0022] Figure 3 yes Figure 2 The floor plan.

[0023] Figure 4 yes Figure 3 Sectional view of AA.

[0024] Figure 5 This is a 3D view of the hidden movable plate of the fixed mold component in this solution.

[0025] Figure 6 This is a 3D view of the hidden fixing plate of the fixed mold component in this solution.

[0026] Figure 7This is a plan view of the first flow channel plate, the second flow channel plate, the insert, and the insulation block in this scheme.

[0027] Figure 8 yes Figure 7 A cross-sectional view of BB.

[0028] Figure 9 This is a 3D view of the inlay and insulation blocks in this design.

[0029] Figure 10 This is a three-dimensional view of the inlay in this design.

[0030] In the figure, 100 is the fixed mold assembly; 110 is the fixed plate; 120 is the movable plate; 130 is the first flow channel plate; 131 is the groove; 140 is the second flow channel plate; 150 is the insert; 151 is the rectangular part; 151a is the cooling channel; 152 is the protruding structure; 200 is the moving mold assembly; 300 is the feed channel; 310 is the first section; 320 is the second section; 400 is the temperature control unit; 410 is the heat preservation block; 411 is the heat preservation channel; 500 is the separation mechanism; 510 is the driving component; 600 is the limiting assembly; 610 is the connecting rod; 620 is the limiting block; and 630 is the stop. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] like Figures 1 to 10As shown, this solution provides a die-casting mold with an in-mold stripping head function, comprising: a fixed mold assembly 100, including a fixed plate 110 and a movable plate 120 that can slide relative to the fixed plate 110 along the mold opening direction; a movable mold assembly 200, which is openable and closable with the fixed mold assembly 100, wherein the side of the movable plate 120 facing the movable mold assembly 200 and the movable mold assembly 200 together define a mold cavity for forming the product; and a feed channel 300 for supplying molten die-casting material to the mold cavity, wherein the feed channel 300 has, along its length, a first section 310, which is formed within the fixed plate 110; and a second section 320, which penetrates the movable plate. The thickness direction of 120 is connected to the mold cavity; the temperature control unit 400 is thermally connected to the junction of the first section 310 and the second section 320, and is used to keep the die-casting material at the junction of the first section 310 and the second section 320 warm so that it remains in an incompletely solidified state when the mold is opened; the separation mechanism 500 is set on the fixed mold assembly 100, and is used to drive the movable plate 120 to separate from the fixed plate 110 in the initial stage of mold opening between the movable mold assembly 200 and the fixed mold assembly 100, so that the incompletely solidified die-casting material breaks with the solidified die-casting material at the junction of the first section 310 and the second section 320.

[0034] During the die-casting production cycle, the temperature control unit 400 continuously and stably transfers heat to the interface between the first section 310 and the second section 320, forming a precise local thermal balance. When the product in the mold cavity is formed and enters the cooling and solidification stage, due to the heat preservation effect of the temperature control unit 400, the die-casting material at the interface between the first section 310 and the second section 320 is deliberately maintained in a semi-solid or highly plastic state that is not completely solidified, while the product body in the mold cavity and the rest of the first section 310 and the second section 320 cool and solidify normally.

[0035] When the die-casting machine performs the mold opening action, causing the moving mold assembly 200 to slide backward relative to the fixed mold assembly 100, the separation mechanism 500 immediately intervenes and drives the movable plate 120 to slide directionally relative to the fixed plate 110. During this process, the movable plate 120 moves synchronously with the moving mold assembly 200 in the mold opening direction, thereby creating distance between it and the fixed plate 110. As the movable plate 120 separates from the fixed plate 110, the first section 310 and the second section 320 are forcibly pulled apart in physical space, and the incompletely solidified die-casting material at the junction is successfully torn off under the combined action of mechanical tension and its own low strength. At this time, the product body remains on the moving mold side, thus completing the automatic separation of the sprue and the product in one go inside the mold, creating convenient conditions for subsequent ejection and part removal processes.

[0036] By setting a temperature control unit 400 at the junction of the first section 310 and the second section 320 of the feed channel 300, "local heat preservation" is utilized. During the die-casting cooling process, the product inside the mold cavity solidifies normally, while the material at the junction of the first section 310 and the second section 320 remains in a semi-solid or plastic state under the action of the temperature control unit 400. Combined with the action of the separation mechanism 500 at the initial stage of mold opening, the movable plate 120 drives the second section 320 to move relative to the fixed plate 110. Utilizing the low strength and easy fracture characteristics of the unsolidified material, the material head and runner are directly separated inside the mold. This process is completely automatic within the mold, eliminating the need for subsequent punching or manual trimming. This not only significantly shortens the production cycle but also completely avoids product deformation, burrs, or cracking problems that may occur during secondary processing, significantly improving the overall yield of die-cast parts.

[0037] This solution utilizes a temperature control unit 400 to ensure that the material at the fracture point (i.e., the junction of the first section 310 and the second section 320) is in a partially solidified state. This means that the required separation force is smaller at the moment of separation. This not only reduces the load requirements on the separation mechanism 500 and extends the service life of mold components, but also effectively prevents damage to the mold precision caused by the huge impact force generated by forced breakage, ensuring the stability and reliability of the mold's long-term operation.

[0038] Furthermore, a first runner plate 130 is fixedly mounted on the fixed plate 110, and a second runner plate 140 is fixedly mounted on the movable plate 120. The first runner plate 130 forms a first section 310, and the second runner plate 140 forms a second section 320. The first runner plate 130 and the second runner plate 140 are movable and fitted together along the mold opening direction. Through the separate design of the first runner plate 130 and the second runner plate 140, the feed channel 300 is divided into independent and replaceable modules. When the runner is worn or blocked, only the corresponding runner plate needs to be replaced, without disassembling the entire mold, which greatly shortens maintenance time and reduces spare parts costs.

[0039] Furthermore, a groove 131 is provided on the end face of the first flow channel plate 130 facing the second flow channel plate 140, and the groove 131 and the upper end face of the second flow channel plate 140 together form the flow channel cavity of the first section 310.

[0040] Furthermore, the second flow channel plate 140 is embedded with a block 150, and the second section 320 passes through the block 150.

[0041] Furthermore, the insert 150 includes an integrally formed rectangular portion 151 and a protruding structure 152. The second section 320 passes through the rectangular portion 151 and the protruding structure 152 in sequence. The upper end face of the protruding structure 152 fits and abuts against the bottom surface of the groove 131 on the first flow channel plate 130, thereby realizing the docking and connection between the first section 310 and the second section 320.

[0042] By embedding an insert 150 within the second flow channel plate 140 and extending the second section 320 through the insert 150, the protruding structure 152 of the insert 150 precisely abuts against the groove 131 or lower end face of the first flow channel plate 130. This structure not only achieves precise connection between the first section 310 and the second section 320 but also effectively prevents leakage of molten metal during die casting (i.e., "burrs" or "flashes") through a hard seal between the metals. Furthermore, the insert 150, as a wear part, can be replaced independently, further extending the service life of the mold body.

[0043] The first runner plate 130 and the second runner plate 140 are fitted together in the mold opening direction. The precise fit between the groove 131 and the insert 150 ensures the sealing of the runner in the mold-closed state. Furthermore, during the initial mold opening stage, when the separation mechanism 500 drives the movable plate 120, the first section 310 and the second section 320 can quickly separate. This structural design provides a reliable mechanical basis for the temperature control unit 400 to achieve localized heat preservation and material cutting at the interface, ensuring the stable operation of the in-mold stripper function.

[0044] Furthermore, the temperature control unit 400 includes a heat insulation block 410, which is sleeved on the outer periphery of the protruding structure 152, and the upper end face of the heat insulation block 410 is sealed and abutted against the bottom surface of the groove 131 on the first flow channel plate 130. The heat insulation block 410 is provided with a heat insulation channel 411 for the flow of heat insulation medium. The heat insulation medium flows in the heat insulation channel 411 to heat the die-casting material at the junction of the first section 310 and the second section 320.

[0045] By installing a heat-insulating block 410 with a heat-insulating channel 411 around the outer periphery of the protruding structure 152, the interface between the first section 310 and the second section 320 can be continuously and stably heated or insulated using a flowing heat-insulating medium. This design ensures that the die-casting material at the interface remains in a semi-solid or highly plastic state (i.e., a "soft connection" state) at the moment of mold opening, while other parts solidify normally. This provides the necessary thermodynamic conditions for the runner solidified material to be successfully torn off at the interface when the moving mold and the fixed mold separate, effectively avoiding the problems of difficult material head breakage or uncontrollable fracture location in traditional cold runner molds.

[0046] The upper surface of the insulation block 410 and the bottom surface of the groove 131 on the first flow channel plate 130 are fitted in a "sealed contact" manner. Under the high pressure of mold closing and locking in the die-casting machine, this surface contact fit can form a reliable sealing barrier, effectively preventing high-temperature and high-pressure molten metal from seeping into the tiny gaps between the insulation block 410 and the flow channel plate. This not only avoids the formation of flash (burrs) on the mold parting surface, ensuring the dimensional accuracy of the casting, but also prevents mold jamming or damage caused by material leakage, significantly reducing the difficulty of mold cleaning and maintenance frequency.

[0047] In this design, the preferred heat-conducting medium is heat-conducting oil; however, pressurized hot water or steam can be used as alternative media for specific operating conditions. Furthermore, the temperature control unit 400 can employ other heating methods, such as arranging a high-frequency induction heating coil on the outer periphery of the raised structure 152 or inside the groove 131 of the first flow channel plate 130; or drilling blind holes inside the insulation block 410 or the raised structure 152 and inserting tubular electric heating rods into the blind holes.

[0048] Furthermore, a cooling channel 151a is provided within the rectangular portion 151, through which a cooling medium flows to accelerate the cooling and solidification of the die-casting material located in the region of the rectangular portion 151 within the second section 320. Water is preferably the cooling medium.

[0049] By forcibly cooling the rectangular section 151 area through cooling channel 151a, and precisely insulating the junction of the first section 310 and the second section 320 with insulation block 410, this solution creates a significant temperature gradient inside the mold, thus clearly defining the fully solidified section and the semi-solid plastic transition zone. This "cold and hot" synergistic temperature field design ensures that the material at the junction can maintain a suitable high plasticity state at the moment of mold opening. This not only provides a reliable thermodynamic basis for the precise tearing of the runner solidified material at the junction when the moving mold assembly 200 and the fixed mold assembly 100 separate, effectively avoiding casting damage or sprue residue caused by random displacement of the fracture position, but also ensures the smoothness of the fracture surface, greatly improving the stability of the in-mold automatic sprue removal function and the yield of finished products.

[0050] Furthermore, the separation mechanism 500 includes a drive member 510, which is disposed on the fixed plate 110. The output end of the drive member 510 is connected to the movable plate 120. The drive member 510 is used to push the movable plate 120 in the initial stage of mold opening, so that the movable plate 120 separates from the fixed plate 110 first.

[0051] In the initial stage of mold opening between the moving mold assembly 200 and the fixed mold assembly 100, when the die-casting machine drives the moving mold assembly 200 to move, the driving component 510 starts synchronously, driving the movable plate 120 away from the fixed plate 110 along the mold opening direction, and moving synchronously with the moving mold assembly 200. As the fixed plate 110 separates from the movable plate 120, the sprue in the first section 310 and the solidified material in the second section 320 are torn apart at their interface. Through the continuous heat preservation effect of the temperature control unit 400 at the interface, it is ensured that the material in this area is in a semi-solid or highly plastic state at the moment of mold opening. This thermodynamic condition allows the sprue to be smoothly torn apart along the preset separation surface, effectively avoiding defects such as random displacement of the fracture position, scratches on the casting body, or residual flow channels caused by the material becoming brittle after complete solidification, thus realizing a stable and reliable in-mold automatic sprue removal function. The driving component 510 can be a motor, hydraulic cylinder, or pneumatic cylinder.

[0052] Furthermore, a limit component 600 is also provided on the fixed mold assembly 100 to limit the sliding stroke of the movable plate 120 and to separate the movable plate 120 from the moving mold assembly 200.

[0053] Furthermore, the limiting component 600 includes: a connecting rod 610, one end of which is fixed to the fixed plate 110, and the other end of which extends along the mold opening direction and slides through the movable plate 120; a limiting block 620, which is fixed to the end of the connecting rod 610 away from the fixed plate 110; and a stop block 630 is provided on the movable plate 120 for abutting against the limiting block 620; when the movable plate 120 slides a preset distance relative to the fixed plate 110, the stop block 630 abuts against the limiting block 620, thereby limiting the sliding distance of the movable plate 120.

[0054] As the die-casting machine moves the moving mold assembly 200 away from the fixed mold assembly 100, the separation mechanism 500 drives the movable plate 120 to slide relative to the fixed plate 110, causing the first runner plate 130 to separate from the second runner plate 140. This results in the material head in the first section 310 and the solidified material in the second section 320 being pulled apart at the interface. Simultaneously, the stop block 630, driven by the movable plate 120, moves closer to the limiting block 620 on the connecting rod 610. When the movable plate 120 slides to a preset stroke, and the stop block 630 abuts against the limiting block 620, the movable plate 120 is mechanically stopped and stops sliding. At this time, the fixed plate 110 holds the movable plate 120 in place via the connecting rod 610. Subsequently, the die-casting machine continues to move the moving mold assembly 200, causing the moving mold assembly 200 to separate from the movable plate 120, and the molded product is ejected from the mold cavity, completing the demolding action.

[0055] The cooperative structure of the limiting component 600 with the movable plate 120 and the fixed plate 110 enables the precise and sequential separation of the moving mold component 200 and the movable plate 120, thereby ensuring the demolding stability and yield of the molded products.

[0056] Specifically, the abutting action of the stop block 630 and the limiting block 620 precisely limits the sliding stroke of the movable plate 120 relative to the fixed plate 110, preventing collisions or incomplete separation between the movable plate 120 and the moving mold assembly 200 due to stroke deviation. When the movable plate 120 is held still by the limiting assembly 600, the moving mold assembly 200 can continue to move independently. This step-by-step demolding mechanism effectively reduces the lateral tension on the molded product during demolding, preventing deformation, tearing, or sticking to the mold due to uneven stress. It is particularly suitable for die-cast products with complex structures and high precision requirements.

[0057] Furthermore, this structure eliminates the need for an additional independent drive unit to control the hovering action of the movable plate 120; it can be achieved solely through mechanical limiting. This simplifies the mold's transmission system, reduces the mold's manufacturing cost and maintenance difficulty, and simultaneously improves the reliability and repeatability of the demolding action, providing strong support for the automation and continuous operation of die-casting production.

[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 protection scope 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 with an in-mold ejector function, characterized in that, include: The mold assembly includes a fixed plate and a movable plate that can slide relative to the fixed plate along the mold opening direction; A moving mold assembly that can be opened and closed with the fixed mold assembly, wherein the side of the movable plate facing the moving mold assembly and the moving mold assembly together define a mold cavity for forming an article; A feed channel for supplying molten die-casting material to the mold cavity, the feed channel having the following along its length: The first section is located within the fixed plate; The second section extends through the thickness direction of the movable plate and communicates with the mold cavity; The temperature control unit is thermally connected to the junction of the first section and the second section, and is used to keep the die-casting material at the junction of the first section and the second section warm so that it remains in a partially solidified state when the mold is opened. A separation mechanism, which is disposed on the fixed mold assembly, is used to drive the movable plate to separate from the fixed plate in the initial stage of mold opening of the movable mold assembly and the fixed mold assembly, so that the incompletely solidified die casting material and the solidified die casting material break at the junction of the first section and the second section.

2. The die-casting mold with in-mold stripping function as described in claim 1, characterized in that, A first flow channel plate is fixedly mounted on the fixed plate, and a second flow channel plate is fixedly mounted on the movable plate. The first flow channel plate forms the first section inside, and the second flow channel plate forms the second section inside. The first flow channel plate and the second flow channel plate are movable and fitted together along the mold opening direction.

3. The die-casting mold with in-mold stripping head function as described in claim 2, characterized in that, The first flow channel plate has a groove on its end face facing the second flow channel plate, and the groove and the upper end face of the second flow channel plate together form the flow channel cavity of the first section.

4. The die-casting mold with in-mold stripping head function as described in claim 3, characterized in that, The second flow channel plate is embedded with an insert, and the second section passes through the insert.

5. The die-casting mold with in-mold stripping head function as described in claim 4, characterized in that, The insert includes an integrally formed rectangular portion and a protruding structure. The second section passes through the rectangular portion and the protruding structure in sequence. The upper end face of the protruding structure fits and abuts against the bottom surface of the groove on the first flow channel plate, thereby realizing the docking and connection between the first section and the second section.

6. The die-casting mold with in-mold stripping head function as described in claim 5, characterized in that, The temperature control unit includes a heat insulation block, which is sleeved on the outer periphery of the protruding structure, and the upper end face of the heat insulation block abuts against the bottom surface of the groove on the first flow channel plate. The heat insulation block is provided with a heat insulation channel for the flow of heat insulation medium, which flows in the heat insulation channel to keep the die-casting material at the junction of the first section and the second section warm.

7. The die-casting mold with in-mold stripping function as described in claim 5, characterized in that, A cooling channel is also provided inside the rectangular section, and a cooling medium flows in the cooling channel to accelerate the cooling and solidification of the die-casting material located in the rectangular section area of ​​the second segment.

8. The die-casting mold with in-mold stripping function as described in claim 1, characterized in that, The separation mechanism includes a driving component disposed on the fixed plate. The output end of the driving component is connected to the movable plate. The driving component is used to push the movable plate in the initial stage of mold opening, so that the movable plate separates from the fixed plate first.

9. The die-casting mold with in-mold stripping function as described in claim 1, characterized in that, The fixed mold assembly is also provided with a limit component to limit the sliding stroke of the movable plate and to separate the movable plate from the moving mold assembly.

10. The die-casting mold with in-mold stripping function as described in claim 9, characterized in that, The limiting component includes: A connecting rod, one end of which is fixed to the fixed plate, and the other end extends along the mold opening direction and slides through the movable plate; A limiting block is fixed to the end of the connecting rod away from the fixed plate, and a stop block is provided on the movable plate for abutting against the limiting block; After the movable plate slides a preset distance relative to the fixed plate, the stop block abuts against the limiting block, thereby limiting the sliding distance of the movable plate.

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