A casting mold

Abstract

The present invention relates to a casting mold, comprising a fixed mold, a movable mold, a movable core and a core-pulling mechanism with a driving source. The movable core is connected to the core-pulling mechanism through a connecting block, and is also provided with a first limit member, the limiting surface of which is parallel to the first mounting plane to limit the movement of the connecting block along the core-pulling direction. It is characterized in that: the connecting block is provided with a matching hole that coincides with the driving source plane of the second mounting plane, the second mounting plane and the first mounting plane are offset at a preset angle to avoid obstacles, and a transmission member connected to a power output rod of the driving source is also provided between the driving source and the connecting block, which contacts the inner wall of the matching hole to convert the direction of the force, and there is also an angle between the axis of the transmission member and the power output rod to form a second mounting plane. The advantage of the present invention is that: by providing a matching hole, the matching hole coincides with the plane of the driving source preset on the required second mounting plane to avoid obstacles on the first mounting plane that is offset at a preset angle relative to the second mounting plane.

Description

Technical Field

[0001] The invention relates to the technical field of casting, in particular to a mold used in a casting process. Background Art

[0002] Casting is a hot metal working process in which liquid metal is poured into a casting cavity adapted to the shape of a workpiece, and then cooled and solidified to obtain a workpiece or blank. A casting mold provides this casting cavity. Examples of common casting molds include "A Casting Mold" disclosed in Chinese Patents ZL202420318692.3 and "An Iron Casting Mold" disclosed in ZL202323607112.7.

[0003] Conventional casting molds typically consist of a movable mold and a fixed mold. The demolding of the workpiece is accomplished by opening the movable mold perpendicularly to the main parting plane and away from the fixed mold. However, due to the complex shapes of some workpieces, such as those with side holes or undercuts, the molded parts hinder the workpiece from being removed from the mold in a direction perpendicular to the main parting plane, making it impossible to directly demold the workpiece. To this end, casting molds equipped with core-pulling mechanisms have appeared on the market, such as the "Adjustable Casting Mold with Micro-Structure Cavity" disclosed in Chinese Patent ZL202320847041.9 or the "Investment Casting Mold Based on Multi-Cylinder Side Core Pulling Technology" disclosed in ZL202021173654.1. This type of mold uses a laterally movable core to form corresponding structures such as side holes or undercuts. A drive source is provided in the core-pulling direction of the corresponding structure. Before the mold is opened, the drive source is used to "pull the core" to move the movable core backward and away from the workpiece, thereby ensuring smooth demolding of the workpiece.

[0004] Although the above mold solves the problem that some complex workpieces cannot be directly demolded, it still has the following limitations:

[0005] First, when the mold is Figure 1When the installation method shown is installed on the casting equipment, the movable core 1' needs to be connected to the driving source 2' through the connecting block 11' whose moving direction is restricted. There may be obstacles such as a large bar 3' (also known as a "Corinthian column") on the rear side of the movable core 1' in the core-pulling direction d' of the corresponding structure. If the driving source 2' is set along the core-pulling direction d' in accordance with the traditional casting mold, the driving source 2' will interfere with the large bar 3' and cannot be installed. For this reason, people in this field have made some suggestions in the mold design. When timing, it is natural to think of turning the driving source 2' to an area where it does not interfere with the large bar 3', and then use a steering core-pulling mechanism to perform core-pulling steering. However, most of the existing steering core-pulling mechanisms use a traditional guide column structure to offset the core-pulling direction d'. For example, Chinese patent ZL202021374908.6 discloses a "steering core-pulling mechanism suitable for die-casting molds". However, this steering core-pulling mechanism can only solve the situation where the core-pulling direction and the area set by the driving source are on the same installation plane.

[0006] And for Figure 2 In the case of core pulling shown in the figure, that is, the core pulling direction d' is not in the same plane as the second mounting plane M' required by the driving source 2', the core pulling direction d' coincides with the first mounting plane m', and the first mounting plane m' is perpendicular to the side wall 12' of the connecting block 11'. If the core pulling is turned by relying on the traditional guide column structure, the power output rod axis Z' of the driving source 2' still needs to coincide with the first mounting plane m', and there is still Figure 1 The interference between the driving source 2' and the large bar 3' is shown in Figure 2 As shown in , the driving source 2' is arranged on the required second mounting plane M' to avoid the large bar 3', but the driving source 2' is arranged here and the connecting block 11' cannot be moved along the core pulling direction d'. Therefore, the existing steering core pulling mechanism is not suitable for the case where the core pulling direction d' and the second mounting plane M' required by the driving source 2' are not in the same plane, and further improvements are needed to the steering core pulling mechanism;

[0007] Second, during the core pulling process, temperature control is very critical. Therefore, cooling channels are sometimes required to prevent the mold temperature from being too high. The cooling channels need to be connected to the water pipes on the outside of the mold. Therefore, the inlet and outlet ends of the water pipes may not be on the same mold plane, making the water pipes too long. This can easily cause the water pipes to interfere with obstacles such as the large bar 3' when installed on the die-casting machine, or be squeezed and damaged during transportation and assembly.

[0008] Third, in addition, the molding die is often provided with a Figure 3The driving source 2' shown, such as a cylinder, can be specifically arranged in a manner as described in Chinese Patent ZL202222405956.2, "A die-casting mold with multiple slides and multiple cavities." To prevent the mold from being flat on the ground, such as the driving source, from being crushed, a hanging assembly method is usually employed. However, during the hanging assembly process, there is a risk of wire rope breakage, which could damage the mold and injure workers, posing a significant safety hazard.

[0009] Fourth, the mold is opened after the molding and cooling processes, and finally the molded product is ejected by the ejector pin in the demoulding direction of the molded product. Therefore, an ejector pin is set under the demoulding slider during mold design. Sometimes, the demoulding slider starts to move and collides with the ejector pin before the ejector pin is fully returned to its position, causing damage to the demoulding slider. Summary of the Invention

[0010] The first technical problem to be solved by the present invention is to provide a casting mold that can perform core pulling more smoothly in response to the above-mentioned existing technical status, especially for the situation where the core pulling direction and the installation plane required by the core pulling drive source are not in the same plane.

[0011] The second technical problem to be solved by the present invention is to provide a casting mold that can avoid interference between cooling water pipes when they are installed in a die-casting machine in response to the above-mentioned existing technical status.

[0012] The third technical problem to be solved by the present invention is to provide a casting mold that can be assembled on the ground even when protruding components such as a driving source are provided on the ground side of the mold in response to the above-mentioned existing technical status.

[0013] The fourth technical problem to be solved by the present invention is to provide a casting mold that can avoid the collision between the demoulding slider and the ejector pin during the demoulding process in response to the above-mentioned existing technical status.

[0014] The technical solution adopted by the present invention to solve the first technical problem is as follows: the casting mold includes a fixed mold and a movable mold, the movable mold can move perpendicularly to the main parting surface of the fixed mold, so that the movable mold can move forward to a mold-closed state relative to the fixed mold or move backward to an open state separated from the fixed mold, when the fixed mold and the movable mold are relative to each other, a casting cavity for molding a workpiece to be processed is formed, and further includes:

[0015] A movable core is provided on the fixed mold and / or the movable mold and is used to be inserted into the casting cavity to form a corresponding structure of the workpiece to be processed;

[0016] a core-pulling mechanism connected to the movable core and comprising a driving source for withdrawing the movable core backward along a core-pulling direction of the corresponding structure;

[0017] A connecting block is used to connect the movable core, and a first limiting member is further provided adjacent to the connecting block, wherein a limiting surface of the first limiting member abutting against the outer periphery of the connecting block is parallel to the first mounting plane, thereby limiting the connecting block to be able to move only along the core pulling direction;

[0018] Its characteristics are:

[0019] A matching hole is provided in the center of the connecting block, and the matching hole coincides with the plane of the driving source preset on the desired second mounting plane. The second mounting plane is offset at a preset angle relative to the first mounting plane, so as to avoid obstacles located on the first mounting plane.

[0020] Correspondingly, a transmission member is also provided between the driving source and the connecting block. The transmission member is connected to the power output rod of the driving source and can pass through the matching hole and contact the inner wall of the matching hole, thereby converting the force along the length direction of the power output rod into the force along the core pulling direction. There is also an angle between the axis of the transmission member and the power output rod and they jointly form the second mounting plane.

[0021] In order to enable the transmission member to convert the direction of the applied force, preferably, the transmission member further comprises a conversion portion for converting the direction of the applied force and a connection portion for connecting to the power take-off rod, wherein the conversion portion forms the angle with the axis of the power take-off rod, and the conversion portion passes through the mating hole to convert the direction of the applied force. It should be noted that this conversion portion is different from a conventional guide post structure. Although the conventional guide post structure can also offset the direction of the applied force, the axis of the guide post, the axis of the power take-off rod, and the axis of the movable core are still located on the same plane. In contrast, in this solution, thanks to the "angle" formed between the conversion portion and the axis of the power take-off rod, the axis of the power take-off rod and the axis of the conversion portion form a new second mounting plane, which is located on a different plane from the axis of the movable core. Similar to a "folded paper", the movable core and the connection block are located on one plane, while the conversion portion and the power take-off rod are located on another plane, thereby avoiding obstacles on the first mounting plane that would always interfere with the drive source.

[0022] In order to be able to convert the force along the length direction of the power output rod into a force along the core pulling direction, preferably, the movable core has a forming end for being inserted into the casting cavity and a connecting end for being connected to the connecting block, the connecting end is inclined forward relative to the forming end, and the forming end forms the core pulling direction toward the connecting end, the conversion part is rod-shaped, including a first end connected to the connecting part and a second end extending toward the matching hole, the second end is inclined forward relative to the first end, so that the conversion part and the core pulling direction are staggered and form the angle with the power output rod. The conversion part passes through the matching hole and intersects with the core-pulling direction, so that the force along the length direction of the conversion part can be split into the force along the core-pulling direction. Therefore, the force from the power output rod can be converted into the force along the core-pulling direction through the matching hole adapted to the conversion part; in addition, the structural focus of the transmission part is also that the conversion part and the power output rod form an "angle", and it is this angle that can make the axis of the power output rod deviate from the first installation plane, and the angle is also related to the relationship between the moving distance of the power output rod and the moving distance of the movable core, that is, as the angle increases, the movable core can move a longer distance under the same power output rod moving distance, so the installation and movement relationship between the power output rod and the movable core can also be adjusted by adjusting the angle of the angle.

[0023] In order to avoid the conversion part from being stuck in the mating hole, preferably, the cross-section of the conversion part is rectangular, and the front side and the rear side are contact surfaces for contacting the mating hole to transmit the force. Correspondingly, the inner wall of the mating hole has a mating surface that can fit with the contact surface. The mating hole also reserves a movable space for the conversion part to move along the width direction of the conversion part. The movable space has a first wall portion and a second wall portion parallel to the second mounting plane on both sides. As the movable core switches between the insertion state and the withdrawal state, the conversion part can move between the first wall portion and the second wall portion relative to the mating hole. The design of the movable space is due to the fact that there is a preset angle offset between the first mounting plane and the second mounting plane, and the conversion part can be understood as an extension from the connecting part toward the matching hole on the transmission part. Therefore, the conversion part is in a "tilted" state relative to the connecting block. In the process of converting the force along the length direction of the conversion part into the force along the core pulling direction, a lateral force along the width direction of the conversion part and perpendicular to the core pulling direction will be generated, resulting in the need for relative displacement between the conversion part and the connecting block to work normally. Therefore, it is necessary to set up an movable space to provide space for the relative displacement between the two to avoid jamming. Furthermore, this feature can also be used to limit the moving position of the movable core by setting the first wall portion and the second wall portion, and the first wall portion and the second wall portion are parallel to the second mounting plane. When the conversion part and the connecting block undergo relative displacement, they can conflict with the first wall portion and the second wall portion, thereby switching the movable core between the insertion state and the extraction state.

[0024] To connect the transmission member to the power take-off rod, preferably, at least a portion of the end of the power take-off rod is radially outwardly protruding to form a flange. Accordingly, the connecting portion is provided with a groove for the flange to engage, thereby enabling the connecting portion and the power take-off rod to be coaxially connected. Accordingly, the wall of the groove is provided with an opening for the power take-off rod to pass through. The opening and groove enable a removable connection between the transmission member and the power take-off rod with an extremely simple structure, which not only limits manufacturing costs but also facilitates the rapid replacement of transmission members with different-sized conversion portions according to different needs. Furthermore, to avoid damage caused by stress concentration at the connecting portion, the connecting portion and the power take-off rod are configured to be coaxially connected.

[0025] In order to prevent the transmission member from deviating under the influence of the force, preferably, a second limiter is further included to limit the transmission member to be able to move only along the length direction of the power output rod, and the second limiter is a limit block and is provided with two, located on both sides of the width direction of the connecting portion, and a third limiter is also provided in front of the conversion portion, the third limiter conflicts with the second end portion, and the second limiter and the third limiter jointly surround and form a first limit space for the transmission member to move. Since a lateral force along the width direction of the conversion portion and perpendicular to the core pulling direction will be generated between the conversion portion and the matching hole, and the power output rod and the transmission member have a long length as a whole, the power output rod and the transmission member are easily deviated from the preset movement direction under the influence of the lateral force, and sometimes it will cause situations such as jamming, component damage, etc. that cannot be pulled normally. For this reason, it is necessary to provide the second limiter and the third limiter to limit the movement direction of the transmission member.

[0026] In order to enable the first limiting member to limit the movement direction of the connecting block, preferably, the first limiting member is a limiting block and is provided with two, so as to be installed on both sides of the connecting block perpendicular to the core-pulling direction. The wall surface where the first limiting member and the connecting block are in contact forms the limiting surface. A second limiting space for movement of the connecting block is formed between the two first limiting members. The connecting block is at least partially raised in the direction of the limiting surface to form a convex portion. Correspondingly, a sliding groove is provided on the limiting surface for the convex portion to be inserted and move along the core-pulling direction. The convex portion cooperates with the sliding groove on the limiting surface, similar to the cooperation between a "slider" and a "guide rail", so that the convex portion can only move along the path set by the sliding groove, thereby more accurately and efficiently limiting the movement of the connecting block to only along the core-pulling direction.

[0027] To address the second technical problem, preferably, the fixed die and / or movable die are further connected to a die foot, which defines multiple independent fluid channels, each with a first flow port and a second flow port, allowing the piping of the casting mold to transfer through the first and second flow ports. This design allows the die foot to not only serve its original function of supporting the fixed die and / or movable die, but also, due to its sufficient volume, to define multiple independent fluid channels, thereby facilitating piping transfers and preventing interference when installed in the die-casting machine. Thus, the die foot serves a dual purpose.

[0028] To address the third technical problem, a frame structure is preferably provided on the ground side of the casting mold. The frame structure is supported on the ground so that the protruding components on the ground side of the casting mold maintain a predetermined distance from the ground. The frame structure includes a first frame portion connected to the fixed mold and a second frame portion connected to the movable mold and movable therewith. This frame structure can effectively bear the weight of the casting mold, thereby preventing the protruding components on the ground side of the casting mold from being damaged by pressure contact with the ground. Furthermore, the frame structure is further divided into two parts, the first frame portion and the second frame portion, which can separate from each other as the fixed mold and movable mold separate.

[0029] In order to solve the fourth technical problem, preferably, the movable mold is further provided with a top plate for ejecting the workpiece to be processed, and a plurality of ejectors extending toward the fixed mold are distributed on the top plate. The top plate can carry each of the ejectors to move toward or away from the fixed mold, thereby switching the ejectors between a reset state and an ejection state. The movable mold is also provided with a sensor for identifying whether the ejector is in a reset state. The sensor can adjust the installation position toward or away from the fixed mold through a connector. The reason for providing this sensor is that, under normal circumstances, the ejector needs to be in the reset state before the slider can move, otherwise the two will interfere with each other. The sensor can identify the position of the ejector plate to ensure that the ejector is in the reset state, and then control the movement of the slider to avoid interference with the ejector. As for the connector, for example, a connector with multiple mounting holes in the length direction or a connector provided on a screw transmission structure can be used to adjust the installation position.

[0030] Compared with the prior art, the advantages of the present invention are:

[0031] 1. By providing a matching hole in the center of the connecting block, and coinciding with the plane of the driving source preset on the desired second mounting plane, obstacles on the first mounting plane offset at a preset angle relative to the second mounting plane can be avoided;

[0032] 2. Through the transmission parts and the matching holes, the force along the length direction of the power output rod can be converted into the force along the core pulling direction, and an angle is formed between the transmission parts and the axis of the power output rod. By adjusting the size of the angle, the installation and movement relationship between the power output rod and the movable core can also be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural diagram of the core pulling mechanism in the background technology of the present invention;

[0034] Figure 2 This is a structural diagram of the core pulling mechanism in the background technology of the present invention from another angle;

[0035] Figure 3 It is a structural schematic diagram of the ground side of the casting mold in the background technology of the present invention;

[0036] Figure 4 A schematic structural diagram of a workpiece to be processed in an embodiment of the present invention;

[0037] Figure 5 Schematic diagram of the structure of the casting mold in an embodiment of the present invention;

[0038] Figure 6 A schematic structural diagram of a casting mold from another angle according to an embodiment of the present invention;

[0039] Figure 7 A partially enlarged structural schematic diagram of a casting mold in an embodiment of the present invention;

[0040] Figure 8 Schematic diagram of a partial explosion structure of a casting mold in an embodiment of the present invention;

[0041] Figure 9 Schematic diagram of the structure of the core-pulling mechanism and the transmission member in an embodiment of the present invention;

[0042] Figure 10 This is a structural diagram of the core-pulling mechanism and the transmission member in an embodiment of the present invention, in which the first limiting member, the second limiting member, and the third limiting member are hidden;

[0043] Figure 11 Schematic diagram of the exploded structure of the connecting block and the transmission member in an embodiment of the present invention;

[0044] Figure 12 Schematic diagram of the structure of the connecting block and the movable core in an embodiment of the present invention;

[0045] Figure 13 Schematic diagram of the connection structure between the transmission member and the power output rod in an embodiment of the present invention;

[0046] Figure 14 Schematic diagram of the structure of the connecting block and the first limiting member in an embodiment of the present invention;

[0047] Figure 15 Schematic diagram of the force structure of the connecting block and the transmission member in an embodiment of the present invention;

[0048] Figure 16 Schematic diagram of the structure of the sensor, ejector plate, ejector pin and connector in an embodiment of the present invention;

[0049] Figure 17 Schematic diagram of the cross-sectional structure of the mold foot in an embodiment of the present invention;

[0050] Figure 18This is a schematic diagram of the movable core in the inserted state according to an embodiment of the present invention;

[0051] Figure 19 Schematic diagram of the movable core in the withdrawn state according to an embodiment of the present invention. DETAILED DESCRIPTION

[0052] The present invention is further described in detail below with reference to specific embodiments.

[0053] like Figures 4 to 17 The preferred embodiment of the present invention is shown in FIG. Figures 5-6 As shown, the casting mold includes a fixed mold 11 and a movable mold 12. Under the drive of the die-casting machine, the movable mold 12 can follow the base plate b to move perpendicularly to the main parting surface N of the fixed mold 11, so that the movable mold 12 can move forward to a mold-closing state relative to the fixed mold 11, or move backward to an open mold state separated from the fixed mold 11. Figure 5 The dotted arrow below indicates the moving direction of the movable mold 12. Figure 8 The fixed mold 11 includes a fixed mold frame 11' and a fixed mold core 11". Similarly, the movable mold 12 includes a movable mold frame 12' and a movable mold core 12". When the fixed mold 11 and the movable mold 12 are relatively combined, the fixed mold core 11" and the movable mold core 12" together form a casting cavity C. The casting mold also includes a movable core 13 provided on the fixed mold 11. The movable core 13 is used to be inserted into the casting cavity C so that the workpiece A to be processed forms a corresponding structure a, such as Figure 4 The workpiece A to be processed is shown. In this embodiment, the corresponding structure a formed by the movable core 13 on the workpiece A to be processed is a deep hole inclined relative to the main parting surface N. In order to be able to remove the movable core 13 from the corresponding structure a after the processing is completed, as shown in FIG. Figure 7 As shown, a core pulling mechanism 2 connected to the movable core 13 is also provided on the fixed mold 11, and the core pulling mechanism 2 includes a driving source 21 for pulling the movable core 13 backward along the core pulling direction d corresponding to the structure a, and a connecting block 22 for connecting the movable core 13. Figure 9 As shown, a first limiting member 23 is further provided adjacent to the connecting block 22. The limiting surface 231 of the first limiting member 23 abutting against the outer periphery of the connecting block 22 is parallel to the first mounting plane m1, thereby limiting the connecting block 22 to move only along the core pulling direction d. The first mounting plane m1 is perpendicular to the side wall 220 and coincides with the core pulling direction d. Figure 5As shown, in this embodiment, obstacle B is the large bar of the die-casting machine located on the first mounting plane m1. In reality, the seat plate b may also interfere with the installation of the drive source 21, making it difficult to install the drive source 21 on the first mounting plane m1. To this end, a mating hole 221 is centrally disposed in the connecting block 22. The mating hole 221 coincides with the plane of the drive source 21, which is pre-set on the desired second mounting plane m2. The second mounting plane m2 is offset from the first mounting plane m1 by a predetermined angle α, thereby avoiding obstacle B located on the first mounting plane m1. Correspondingly, a transmission member 3 is disposed between the drive source 21 and the connecting block 22. The transmission member 3 is connected to the power output rod 211 of the drive source 21 and is capable of passing through the mating hole 221 to contact the inner wall of the mating hole 221, thereby converting the force applied along the length of the power output rod 211 into a force applied along the core-pulling direction d. The axes of the transmission member 3 and the power output rod 211 also form an angle β between them, together forming the second mounting plane m2.

[0054] The transmission member 3 comprises a conversion portion 31 for converting the direction of the applied force and a connection portion 32 for connecting to the power output rod 211. The conversion portion 31 forms an angle β with the axis of the power output rod 211, and the conversion portion 31 can pass through the mating hole 221 to convert the direction of the applied force. It should also be noted that the conversion portion 31 is different from the conventional guide post structure for biasing the direction of the applied force, in that the axis of the guide post, the axis of the power output rod 211, and the axis of the movable core 13 are all on the same plane. Figures 9-10 In this solution, thanks to the "angle β" formed between the conversion part 31 and the axis of the power output rod 211, the axis of the power output rod 211 and the axis of the conversion part 31 form a new second installation plane m2, which is on a different plane from the axis of the movable core 13, that is, similar to "folded paper", the movable core 13 and the connecting block 22 are on the same plane, while the conversion part 31 and the power output rod 211 are on another plane, thereby avoiding the obstacle B on the first installation plane m1 that always interferes with the driving source 21. Furthermore, the movable core 13 has a molding end 131 for being inserted into the casting cavity C and a connecting end 132 for being connected to the connecting block 22, the connecting end 132 is inclined forward relative to the molding end 131, and the molding end 131 forms a core pulling direction d toward the connecting end 132. Correspondingly, with regard to the detailed structure of the conversion part 31, as shown in FIG. Figure 11As shown, the conversion portion 31 is rod-shaped and includes a first end 311 connected to the connecting portion 32 and a second end 312 extending toward the mating hole 221. The second end 312 is tilted forward relative to the first end 311, so that the conversion portion 31 intersects with the core-pulling direction d and forms an angle β with the power output rod 211. The conversion portion 31 passes through the mating hole 221 and intersects with the core-pulling direction d, thereby splitting the force acting along the length of the conversion portion 31 into the force acting along the core-pulling direction d. Therefore, the force from the power output rod 211 can be converted into a force acting along the core-pulling direction d through the mating hole 221 that is adapted to the conversion portion 31. In addition, the structural focus of the transmission member 3 is that the conversion portion 31 and the power output rod 211 form an "angle β". It is this angle β that can cause the axis of the power output rod 211 to deviate from the first installation plane m1, and the angle β is also related to the relationship between the movement distance of the power output rod 211 and the movement distance of the movable core 13. That is, as the angle β increases, the movable core 13 can move a longer distance under the same movement distance of the power output rod 211. Therefore, the installation and movement relationship between the power output rod 211 and the movable core 13 can be adjusted by adjusting the angle β. In addition, the end of the power output rod 211 at least partially protrudes radially outward to form a flange 212. Correspondingly, the connecting portion 32 is provided with a groove 321 for the flange 212 to be clamped, so that the connecting portion 32 and the power output rod 211 are coaxially connected. Correspondingly, the wall of the groove 321 is provided with an opening 322 for the power output rod 211 to pass through. Through the opening 322 and the groove 321, the transmission member 3 and the power output rod 211 can be detachably connected with an extremely simple structure, which not only limits the production cost, but also facilitates the rapid replacement of the transmission member 3 with a conversion part 31 of different specifications according to different needs. The connection part 32 and the power output rod 211 are arranged to be coaxially connected in order to avoid damage to the connection part 32 due to stress concentration.

[0055] Regarding the cooperation between the conversion portion 31 and the cooperation hole 221, see Figures 11-14The cross section of the conversion part 31 is rectangular, and the front and rear side surfaces are contact surfaces 313 for contacting the matching hole 221 to transmit the force. Correspondingly, the inner wall of the matching hole 221 has a matching surface 222 that can fit with the contact surface 313. The matching hole 221 also reserves an active space 223 for the conversion part 31 to move along the width direction of the conversion part 31. The active space 223 has a first wall portion 224 and a second wall portion 225 parallel to the second mounting plane m2 on both sides. As the movable core 13 switches between the insertion state and the withdrawal state, the conversion part 31 can move between the first wall portion 224 and the second wall portion 225 relative to the matching hole 221. The active space 223 is designed because the first mounting plane m1 and the second mounting plane m2 are offset by a preset angle α, and the conversion part 31 can be understood as an extension from the connecting part 32 toward the matching hole 221 on the transmission member 3. Therefore, the conversion part 31 is in a "tilted" state relative to the connecting block 22, such as Figure 15 As shown, the moving direction of the power output rod 211 may be marked as "f", and the conversion part 31 will apply a first force F1 perpendicular to the mating surface 222 to the mating hole 221. The first force F1 can be split into a second force F2 coinciding with the core pulling direction d and a third force F3 parallel to the mating surface 222. The third force F3 is a lateral force perpendicular to the mating surface 222, which will cause relative displacement between the conversion part 31 and the connecting block 22. This lateral force causes relative displacement between the conversion part 31 and the connecting block 22 in order to work normally. For this reason, it is necessary to set up an active space 223 to provide space for the relative displacement between the two to avoid jamming. Furthermore, this feature can be used to limit the moving position of the movable core 13 by setting a first wall portion 224 and a second wall portion 225. The first wall portion 224 and the second wall portion 225 are arranged along the width direction of the conversion part 31, that is, along the direction of the third force F3, and the first wall portion 224 and the second wall portion 225 are parallel to the second mounting plane m2. When the conversion part 31 and the connecting block 22 are relatively displaced, they can conflict with the first wall portion 224 and the second wall portion 225, thereby switching the movable core 13 between the inserted state and the withdrawn state.

[0056] The presence of the third lateral force F3 may also cause the power output rod 211 and the transmission member 3 to deviate from the preset movement direction, resulting in situations such as jamming, component damage, and inability to pull the core normally. For this reason, a second limiter 24 and a third limiter 25 are required to limit the movement direction of the transmission member 3. The second limiter 24 is used to limit the transmission member 3 to move only along the length direction of the power output rod 211. The second limiter 24 is a limit block and is provided with two, located on both sides of the connecting portion 32 in the width direction. The third limiter 25 is also included in front of the conversion portion 31. The third limiter 25 is in conflict with the second end portion 312. The second limiter 24 and the third limiter 25 together surround and form a first limit space 26 for the transmission member 3 to move. Similarly, the first limiting member 23 is a limiting block. Two first limiting members 23 are provided to be installed on both sides of the connecting block 22 perpendicular to the core-pulling direction d. The wall surface where the first limiting member 23 and the connecting block 22 meet forms a limiting surface 231. A second limiting space 27 for the movement of the connecting block 22 is formed between the two first limiting members 23. The connecting block 22 is at least partially raised toward the limiting surface 231 to form a protrusion 226. Correspondingly, a slide groove 232 is provided on the limiting surface 231 for the protrusion 226 to be inserted and move along the core-pulling direction d. The protrusion 226 cooperates with the slide groove 232, similar to the cooperation between a "slider" and a "guide rail", so that the protrusion 226 can only move along the path set by the slide groove 232, thereby more accurately and efficiently limiting the connection block 22 to move only along the core-pulling direction d.

[0057] In addition to the above, this solution also needs to solve the following three technical problems: First, it can avoid interference between the cooling pipes 15 when they are installed on the die-casting machine; second, it can also realize the ground assembly method when protruding parts 16 such as the drive source 21 are provided on the ground side of the casting mold; third, it can avoid collision between the demolding slider and the ejector pin 122 during the demolding process.

[0058] For this reason, Figure 17As shown, in this embodiment, the movable mold 12 is also connected to a mold foot 14. The mold foot 14 defines multiple independent fluid channels 141, each with a first flow port 142 and a second flow port 143. These channels allow the pipelines 15 of the casting mold to transfer through the first and second flow ports 142, 143. This design allows the mold foot 14 to not only support the movable mold 12 but also, due to its sufficient volume, to define multiple independent fluid channels 141, allowing for transfer of the pipelines 15 and preventing interference when the pipelines 15 are installed in the die-casting machine. Thus, the mold foot 14 serves a dual purpose. Regarding the second technical issue, a frame structure 4 is provided on the ground side of the casting mold. The frame structure 4 is supported on the ground so that the protruding member 16 on the ground side of the casting mold maintains a predetermined distance H from the ground. The frame structure 4 includes a first frame portion 41 connected to the fixed mold 11 and a second frame portion 42 connected to the movable mold 12 and capable of moving with the movable mold 12. The frame structure 4 can effectively bear the weight of the casting mold, thereby preventing the protruding parts 16 on the ground side of the casting mold from being damaged by pressure from contacting the ground. On the other hand, the frame structure 4 is further divided into two parts: a first frame portion 41 and a second frame portion 42. As the fixed mold 11 and the movable mold 12 separate, the first frame portion 41 and the second frame portion 42 can separate from each other along with the fixed mold 11 and the movable mold 12. In addition, since the mold foot 14 in this embodiment has multiple fluid channels 141, the mold foot 14 also needs to bear the weight of the fluid. In order to increase the stability of the structure, the second frame portion 42 also extends from the mold 12 toward the mold foot 14 and connects to the mold foot 14. Finally, see Figure 16 The movable mold 12 is also provided with a top plate 121 for ejecting the workpiece A to be processed. A plurality of ejectors 122 extending toward the fixed mold 11 are distributed on the top plate 121. The top plate 121 can carry each ejector 122 to move toward or away from the fixed mold 111, thereby switching the ejector 122 between a reset state and an ejection state. The movable mold 12 is also provided with a sensor 123 for identifying whether the ejector 122 is in a reset state. The sensor 123 can adjust its installation position toward or away from the fixed mold 11 through a connector 124. The reason for providing the sensor 123 is that the slider can only move when the ejector 122 is in the reset state, otherwise the two will interfere with each other. The sensor 123 can identify the position of the top plate 121 to ensure that the ejector 122 is in the reset state, and then control the movement of the slider to avoid interference with the ejector 122. In this embodiment, the connector 124 is a structure with multiple mounting holes in the longitudinal direction.

[0059] The following is the specific working process of the transmission member 3 and the matching hole 221:

[0060] like Figure 18As shown, at this time, the movable core 13 is in the inserted state, and the conversion portion 31 is in conflict with the first wall portion 224; Figure 19 As shown, as the transmission member 3 is pulled backward along the axial direction of the power output rod 211 by the power output rod 211, the conversion part 31 interacts with the matching hole 221 to convert the direction of the force along the power output rod 211 into the core pulling direction d, and the movable core 13 is pulled out. At the same time, the conversion part 31 also undergoes relative displacement with the matching hole 221 in the active space 223, so that the conversion part 31 conflicts with the second wall part 225.

Claims

1. A casting mold, comprising a fixed mold (11) and a movable mold (12), wherein the movable mold (12) is movable perpendicular to a main parting surface (N) of the fixed mold (11), so that the movable mold (12) can move forward to a mold-closing state relative to the fixed mold (11) or move backward to an open mold state relative to the fixed mold (11), and when the fixed mold (11) and the movable mold (12) are relative to each other, a casting cavity (C) for molding a workpiece (A) to be processed is formed, and further comprising: A movable core (13) is provided on the fixed mold (11) and / or the movable mold (12) and is used for being inserted into the casting cavity (C) so that the workpiece (A) to be processed forms a corresponding structure (a); A core-pulling mechanism (2) connected to the movable core (13) includes a driving source (21) for withdrawing the movable core (13) backward along a core-pulling direction (d) corresponding to the structure (a); A connecting block (22) is used to connect the movable core (13), and a first limiting member (23) is provided adjacent to the connecting block (22). A limiting surface (231) of the first limiting member (23) abutting against the periphery of the connecting block (22) is parallel to a first mounting plane (m1), thereby limiting the connecting block (22) to be able to move only along the core-pulling direction (d); Its characteristics are: A matching hole (221) is provided at the center of the connecting block (22), the matching hole (221) coincides with the plane of the driving source (21) preset on a desired second mounting plane (m2), the second mounting plane (m2) being offset by a preset angle (α) relative to the first mounting plane (m1), thereby avoiding an obstacle (B) located on the first mounting plane (m1); Correspondingly, a transmission member (3) is further provided between the driving source (21) and the connecting block (22); the transmission member (3) is connected to the power output rod (211) of the driving source (21), and is capable of passing through the matching hole (221) and contacting the inner wall of the matching hole (221), thereby converting the force along the length direction of the power output rod (211) into the force along the core-pulling direction (d); and an angle (β) is also formed between the axis of the transmission member (3) and the power output rod (211), and the second mounting plane (m2) is formed together.

2. The casting mold according to claim 1, characterized in that: The transmission member (3) further comprises a conversion portion (31) for converting the direction of the applied force and a connection portion (32) for connecting to the power output rod (211); an included angle (β) is formed between the conversion portion (31) and the axis of the power output rod (211); and the conversion portion (31) passes through the matching hole (221) to convert the direction of the applied force.

3. The casting mold according to claim 2, characterized in that: The movable core (13) has a forming end (131) for being inserted into the casting cavity (C) and a connecting end (132) for being connected to the connecting block (22); the connecting end (132) is inclined forward relative to the forming end (131); the forming end (131) forms the core-pulling direction (d) toward the connecting end (132); the conversion portion (31) is rod-shaped and includes a first end (311) connected to the connecting portion (32) and a second end (312) extending toward the matching hole (221); the second end (312) is inclined forward relative to the first end (311), so that the conversion portion (31) and the core-pulling direction (d) are intertwined and form the angle (β) with the power output rod (211).

4. The casting mold according to claim 3, characterized in that: The cross section of the conversion part (31) is rectangular, and the front side and the rear side are contact surfaces (313) for contacting the matching hole (221) to transmit the force. Correspondingly, the inner wall of the matching hole (221) has a matching surface (222) that can fit with the contact surface (313). The matching hole (221) also reserves a movable space (223) for the conversion part (31) to move along the width direction of the conversion part (31). The movable space (223) has a first wall portion (224) and a second wall portion (225) parallel to the second mounting plane (m2) on both sides. As the movable core (13) switches between the insertion state and the withdrawal state, the conversion part (31) can move between the first wall portion (224) and the second wall portion (225) relative to the matching hole (221).

5. The casting mold according to claim 3, characterized in that: The end portion of the power output rod (211) is at least partially radially outwardly protruding to form a flange (212); correspondingly, the connecting portion (32) is provided with a groove (321) for the flange (212) to be clamped, so that the connecting portion (32) and the power output rod (211) are coaxially connected; correspondingly, an opening (322) is provided on the wall portion of the groove (321) for the power output rod (211) to pass through.

6. The casting mold according to claim 3, characterized in that: The invention also includes a second limiting member (24) for limiting the transmission member (3) to move only along the length direction of the power output rod (211), and the second limiting member (24) is a limiting block and is provided with two, which are located on both sides of the width direction of the connecting portion (32). A third limiting member (25) is also provided in front of the conversion portion (31), and the third limiting member (25) is in conflict with the second end portion (312). The second limiting member (24) and the third limiting member (25) are jointly surrounded to form a first limiting space (26) for the transmission member (3) to move.

7. The casting mold according to any one of claims 2 to 6, characterized in that: The first limiting member (23) is a limiting block and is provided with two thereof, so as to be installed on both sides of the connecting block (22) perpendicular to the core-pulling direction (d). The wall surface where the first limiting member (23) and the connecting block (22) are in contact forms the limiting surface (231). A second limiting space (27) for the connecting block (22) to move is formed between the two first limiting members (23). The connecting block (22) is at least partially raised in the direction of the limiting surface (231) to form a convex portion (226). Correspondingly, a sliding groove (232) is provided on the limiting surface (231) for the convex portion (226) to be inserted and moved along the core-pulling direction (d).

8. The casting mold according to any one of claims 1 to 6, characterized in that: The fixed mold (11) and / or the movable mold (12) are further connected to a mold foot (14), and a plurality of mutually independent fluid channels (141) are provided in the mold foot (14), and the fluid channels (141) have respective first flow ports (142) and second flow ports (143), so that the pipeline (15) of the casting mold can be transferred through the first flow ports (142) and the second flow ports (143).

9. The casting mold according to any one of claims 1 to 6, characterized in that: A frame structure (4) is provided on the ground side of the casting mold, the frame structure (4) being supported on the ground so that the protruding component (16) on the ground side of the casting mold maintains a preset distance (H) from the ground, and the frame structure (4) includes a first frame portion (41) connected to the fixed mold (11) and a second frame portion (42) connected to the movable mold (12) and capable of moving with the movable mold (12).

10. The casting mold according to any one of claims 1 to 6, characterized in that: The movable mold (12) is further provided with a top plate (121) for ejecting a workpiece (A) to be processed. A plurality of ejector pins (122) extending toward the fixed mold (11) are distributed on the top plate (121). The top plate (121) can carry each of the ejector pins (122) to move toward or away from the fixed mold (11), thereby switching the ejector pins (122) between a reset state and an ejection state. The movable mold (12) is further provided with a sensor (123) for identifying whether the ejector pins (122) are in the reset state. The sensor (123) can adjust its installation position toward or away from the fixed mold (11) through a connecting piece (124).

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