Casting mold

Abstract

The invention relates to a casting mold which comprises a fixed mold, a movable mold, a movable mold core and a core-pulling mechanism with a driving source, the movable mold core is connected with the core-pulling mechanism through a connecting block, the casting mold is further provided with a first limiting piece, and a limiting surface is parallel to a first mounting plane to limit the connecting block to move in the core-pulling direction; the device is characterized in that the connecting block is provided with a matching hole coinciding with the driving source plane of the second mounting plane, a preset angle is arranged between the second mounting plane and the first mounting plane in an offset mode to avoid obstacles, and a transmission piece connected with a power output rod of the driving source is further arranged between the driving source and the connecting block. The power output rod is provided with a matching hole, the matching hole is arranged in the power output rod, the power output rod is in contact with the inner wall of the matching hole so as to convert the direction of the acting force, and an included angle is formed between the axis of the transmission part and the axis of the power output rod and forms a second mounting plane. The obstacle on the first installation plane is offset by a preset angle relative to the second installation plane.

Description

Technical Field

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

[0002] Casting is a metal hot working process in which liquid metal is poured into a casting cavity that is adapted to the shape of the workpiece, and then cooled and solidified to obtain a workpiece or blank. The casting mold plays the role of providing the casting cavity. For example, the "a casting mold" disclosed in Chinese patent ZL202420318692.3 and the "an iron casting casting mold" disclosed in ZL202323607112.7 are common casting molds.

[0003] Conventional casting molds usually have two parts, a movable mold and a fixed mold, and the demolding of the workpiece is completed by opening the movable mold perpendicular to the main parting surface and away from the fixed mold. However, due to the complex shape of some workpieces, such as structures such as side holes or side recesses on the workpiece, the molded part hinders the workpiece from being taken out of the mold in a direction perpendicular to the main parting surface, making it impossible to demold the workpiece directly. For this reason, casting molds with core pulling mechanisms have appeared on the existing 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 forms corresponding structures such as side holes or side recesses through a core that can move laterally, and a driving source is provided in the core pulling direction of the corresponding structure. Before opening the mold, the driving source is used to move the movable core backward in the core pulling direction of the corresponding structure to separate from the workpiece by "core pulling", thereby ensuring that the workpiece can be demolded smoothly.

[0004] Although the above mold solves the problem that some complex workpieces cannot be demolded directly, 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' according to the traditional casting mold, the driving source 2' will interfere with the large bar 3' and cannot be installed. For this reason, the personnel 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 there is no interference with the large bar 3', and then using 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] For example, 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 installation plane M' required by the driving source 2', the core pulling direction d' coincides with the first installation plane m', and the first installation 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 installation plane m', and there is still Figure 1 The interference between the driving source 2' and the large bar 3' shown in Figure 2 As shown in , the driving source 2' is arranged on the required second installation plane M' to avoid the large bar 3', but the driving source 2' is arranged here and the connecting block 11' cannot move along the core pulling direction d'. Therefore, the existing steering core pulling mechanism is not suitable for the situation where the core pulling direction d' and the second installation plane M' required by the driving source 2' are not in the same plane, and the steering core pulling mechanism needs to be further improved;

[0007] Second, in the process of core pulling, the control of process temperature is very critical. For this reason, it is sometimes necessary to set a cooling channel to prevent the mold temperature from being too high, and the cooling channel needs to be connected to the water pipe outside the mold. Therefore, the inflow end and the outflow end of the water pipe may not be on the same mold plane, making the water pipe too long, which may easily cause the water pipe to interfere with obstacles such as the big bar 3' when installed on the die-casting machine, or be squeezed and damaged during transportation and assembly;

[0008] Third, in addition, the molding mold is often provided with a Figure 3The driving source 2' shown, such as an oil cylinder, can be specifically set up in accordance with the "A die-casting mold with multiple slides, one mold and multiple cavities" disclosed in Chinese patent ZL202222405956.2. In order to avoid crushing the protruding parts protruding from the ground side plane such as the driving source, the mold cannot be placed flat on the ground. For this reason, a hanging assembly method is usually required. However, during the hanging assembly process, there may be situations such as wire rope breakage, which may not only damage the mold, but also easily injure the operator by mistake, posing a greater safety hazard.

[0009] Fourth, the molding mold is opened after the molding process and the cooling process, and finally the molded product is ejected in the demoulding direction by the ejector pin. Therefore, an ejector pin is arranged under the demoulding slider during mold design. Therefore, sometimes the ejector pin has not completely returned to its original position, and the demoulding slider starts to move and collides with the ejector pin, 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 capable of preventing the demoulding slider from colliding with the ejector pin during the demoulding process in view of the above-mentioned existing technical status.

[0014] The technical solution adopted by the present invention to solve the first technical problem is: 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-closing state relative to the fixed mold or move backward to an open mold 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 also includes:

[0015] A movable core, arranged on the fixed mold and / or the movable mold, and used for being 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, comprising a driving source for pulling the movable core backward along the core pulling direction of the corresponding structure;

[0017] A connecting block is used to connect the movable core, and a first limiting member is also arranged adjacent to the connecting block, wherein a limiting surface of the first limiting member in contact with 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] Features:

[0019] A matching hole is provided at the center of the connecting block, and the matching hole coincides with the plane of the driving source preset on the required second mounting plane, and 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 to 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 realize that the transmission member can convert the direction of the force, preferably, the transmission member also has a conversion part for converting the direction of the force and a connecting part for connecting with the power output rod, the conversion part and the axis of the power output rod form the angle, and the conversion part passes through the matching hole to convert the direction of the force. It should be noted that the conversion part is different from the traditional guide column structure. Although the traditional guide column structure can also offset the direction of the force, the axis of the guide column, the axis of the power output rod and the axis of the movable core are still on the same plane. In this solution, thanks to the "angle" formed between the conversion part and the axis of the power output rod, the axis of the power output rod and the axis of the conversion part form a new second installation plane, which is on a different plane from the axis of the movable core, similar to "folded paper", the movable core and the connecting block are located on one plane, and the conversion part and the power output rod are located on another plane, so that obstacles on the first installation plane that will always interfere with the drive source can be avoided.

[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 molding 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 molding end, the molding end forms the core pulling direction toward the connecting end, the conversion portion is rod-shaped, including a first end connected to the connecting portion and a second end extending toward the matching hole, the second end is inclined forward relative to the first end, so that the conversion portion 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 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 surface and the rear side surface are contact surfaces for contacting the mating hole to transmit force. Correspondingly, the inner wall of the mating hole has a mating surface that can fit with the contact surface, and 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 activity space is designed because the first mounting plane and the second mounting plane are offset by a preset angle, 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 activity 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 are relatively displaced, they can conflict with the first wall portion and the second wall portion, thereby switching the movable core between the insertion state and the withdrawal state.

[0024] In order to connect the transmission member to the power output rod, preferably, the end of the power output rod at least partially protrudes radially outward to form a flange, and correspondingly, the connecting portion is provided with a groove for the flange to be clamped, so that the connecting portion and the power output rod are coaxially connected, and correspondingly, the wall of the groove is provided with an opening for the power output rod to pass through. Through the opening and the groove, the transmission member and the power output rod can be detachably connected with an extremely simple structure, which can not only limit the production cost, but also facilitate the rapid replacement of the transmission member with a conversion part of different specifications according to different needs, and in order to avoid damage caused by stress concentration in the connection part, the connection part and the power output rod are also set 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 move only along the length direction of the power output rod, and the second limiter is a limiter block and is provided with two, located on both sides of the width direction of the connecting part, and a third limiter is also provided in front of the conversion part, the third limiter conflicts with the second end, and the second limiter and the third limiter jointly surround and form a first limiter space for the transmission member to move. Since a lateral force along the width direction of the conversion part and perpendicular to the core pulling direction will be generated between the conversion part and the matching hole, and the power output rod and the transmission member have a relatively long length as a whole, the power output rod and the transmission member are easy to deviate from the preset moving direction under the influence of the lateral force, and sometimes it will cause situations such as jamming, component damage, etc. that cannot pull the core normally. For this reason, the second limiter and the third limiter need to be provided to limit the moving direction of the transmission member.

[0026] In order to enable the first limiting member to limit the moving direction of the connection 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 connection block perpendicular to the core pulling direction, the first limiting member and the wall surface of the connection block in contact form the limiting surface, and a second limiting space for the connection block to move is formed between the two first limiting members, and the connection block at least partially protrudes toward the limiting surface to form a convex portion, and correspondingly, a slide 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 slide 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 slide groove, thereby more accurately and efficiently limiting the connection block to only move along the core pulling direction.

[0027] In order to solve the second technical problem, preferably, the fixed mold and / or the movable mold are further connected with a mold foot, and a plurality of mutually independent fluid channels are opened in the mold foot, and the fluid channels have respective first flow ports and second flow ports, so that the pipelines of the casting mold can be transferred through the first flow ports and the second flow ports. With such a design, the mold foot not only has the original function of supporting the fixed mold and / or the movable mold, but also has sufficient volume to open a plurality of mutually independent fluid channels, so that it can be used for pipeline transfer to avoid interference when the pipelines are installed in the die-casting machine, so the mold foot has the function of "one thing with two uses".

[0028] In order to solve the third technical problem, preferably, a frame structure is provided on the ground side of the casting mold, the frame structure is supported on the ground so that the protruding parts on the ground side of the casting mold maintain a preset distance from the ground, and the frame structure includes a first frame part connected to the fixed mold and a second frame part connected to the movable mold and movable with the movable mold. The frame structure can effectively bear the weight of the casting mold, thereby preventing the protruding parts on the ground side of the casting mold from being damaged by pressure due to contact with the ground. On the other hand, the frame structure is also divided into two parts, the first frame part and the second frame part. As the fixed mold and the movable mold are separated, the first frame part and the second frame part can be separated from each other along with the fixed mold and the movable mold.

[0029] In order to solve the fourth technical problem, preferably, the movable mold is also 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, and the top plate can carry each of the ejectors to move toward or away from the fixed mold, so that the ejectors can switch between the reset state and the ejection state, and the movable mold is also provided with a sensor for identifying whether the ejector is in the reset state, and the sensor can adjust the installation position toward or away from the fixed mold through a connecting piece. The reason for providing the sensor is that the ejector usually needs to be in the reset state before the slider can move, otherwise the two will interfere with each other, and through the sensor, the position of the ejector plate can be identified to ensure that the ejector is in the reset state, and then the movement of the slider is controlled to avoid interference with the ejector, and as for the connecting piece, for example, a connecting piece with multiple mounting holes in the length direction or a connecting piece arranged 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 the matching hole coincides with the plane of the driving source preset on the required 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 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 schematic diagram of the core pulling mechanism in the background technology of the present invention;

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

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

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

[0037] Figure 5 It is a structural schematic diagram of a casting mold in an embodiment of the present invention;

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

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

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

[0041] Fig. 9 It is a structural schematic diagram of the core pulling mechanism and the transmission member in an embodiment of the present invention;

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

[0043] Fig.11 It is a schematic diagram of the exploded structure of the connecting block and the transmission member in the embodiment of the present invention;

[0044] Fig.12 It is a structural schematic diagram of a connecting block and a movable core in an embodiment of the present invention;

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

[0046] Fig.14 It is a schematic diagram of the structure of the connecting block and the first limiting member in an embodiment of the present invention;

[0047] Fig.15 It is a schematic diagram of the force structure of the connecting block and the transmission member in an embodiment of the present invention;

[0048] Fig.16 It is a schematic diagram of the structure of the sensor, the ejector plate, the ejector pin and the connecting member in the embodiment of the present invention;

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

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

[0051] Fig.19 It is a schematic diagram of the movable core in the withdrawn state in the embodiment of the present invention. DETAILED DESCRIPTION

[0052] The present invention is further described in detail below in conjunction with 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 seat 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", and 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" jointly form a casting cavity C. The casting mold also includes a movable core 13 arranged on the fixed mold 11, and 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 FIG. 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. Fig. 9 As shown, a first stopper 23 is also provided adjacent to the connection block 22, and a stopper surface 231 of the first stopper 23 and the outer periphery of the connection block 22 is parallel to the first mounting plane m1, thereby limiting the connection block 22 to move only along the core pulling direction d, and the first mounting plane m1 is perpendicular to the side wall 220 and coincides with the core pulling direction d. Figure 5As shown, the obstacle B in this embodiment is a large bar of a die-casting machine arranged on the first installation plane m1, and in fact, the seat plate b may also interfere with the installation of the driving source 21, making it difficult for the driving source 21 to be installed on the first installation plane m1. To this end, a matching hole 221 is provided at the center of the connecting block 22, and the matching hole 221 coincides with the plane of the driving source 21 preset on the required second installation plane m2, and the second installation plane m2 is offset by a preset angle α relative to the first installation plane m1, so as to avoid the obstacle B located on the first installation plane m1. Correspondingly, a transmission member 3 is also provided between the driving source 21 and the connecting block 22, and the transmission member 3 is connected to the power output rod 211 of the driving source 21, and can pass through the matching hole 221 to contact 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 the transmission member 3 and the axis of the power output rod 211 also have an angle β and jointly form the second installation plane m2.

[0054] In terms of the structure of the transmission member 3, it includes a conversion part 31 for converting the direction of the force and a connection part 32 for connecting with the power output rod 211. An angle β is formed between the conversion part 31 and the axis of the power output rod 211. The conversion part 31 can pass through the matching hole 221 to convert the direction of the force. In addition, it should be noted that the conversion part 31 is different from the traditional guide column structure for biasing the direction of the force, which is manifested in that the axis of the guide column, the axis of the power output rod 211 and the axis of the movable core 13 are on the same plane, and the axis of the guide column, the axis of the power output rod 211 and the axis of the movable core 13 are 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 located on one plane, while the conversion part 31 and the power output rod 211 are located on another plane, thereby avoiding the obstacle B on the first installation plane m1 that will always interfere 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 connecting 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, such as Fig.11As shown, the conversion part 31 is in the shape of a rod, and includes a first end 311 connected to the connection part 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 part 31 is staggered with the core-pulling direction d and forms an angle β with the power output rod 211. The conversion part 31 passes through the matching hole 221 and is staggered with the core-pulling direction d, so that the force along the length direction of the conversion part 31 can be split into the force along the core-pulling direction d, so that the force from the power output rod 211 can be converted into the force along the core-pulling direction d through the matching hole 221 adapted to the conversion part 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", and it is this angle β that can make the axis of the power output rod 211 deviate from the first installation plane m1, and the angle β is also related to the relationship between the moving distance of the power output rod 211 and the moving 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 moving distance of the power output rod 211, so the installation and movement relationship between the power output rod 211 and the movable core 13 can also be adjusted by adjusting the angle of the angle β. In addition, the end of the power output rod 211 at least partially protrudes radially outward to form a flange 212, and 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, and 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 each other with an extremely simple structure, which not only limits the production cost, but also facilitates the rapid replacement of the transmission member 3 with conversion parts 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 to 14The cross section of the conversion part 31 is rectangular, and the front side and the rear side are contact surfaces 313 for contacting with 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 activity space 223 for the conversion part 31 to move along the width direction of the conversion part 31. The two sides of the activity space 223 have a first wall portion 224 and a second wall portion 225 parallel to the second mounting plane m2. 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 design of the activity space 223 is due to the preset angle α between the first mounting plane m1 and the second mounting plane m2, and the conversion part 31 can be understood as an extension formed from the connecting part 32 on the transmission member 3 toward the matching hole 221. Therefore, the conversion part 31 is in a "tilted" state relative to the connecting block 22, such as Fig.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 coincident 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 a 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 for normal operation. For this reason, it is necessary to set up an active space 223 to provide space for 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 the first wall portion 224 and the 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 contact the first wall portion 224 and the second wall portion 225, thereby switching the movable core 13 between the inserted state and the removed state.

[0056] The existence of the third lateral force F3 may also cause the power output rod 211 and the transmission member 3 to deviate from the preset moving direction, resulting in situations such as jamming, component damage, etc. where the core cannot be pulled normally. For this reason, a second limiter 24 and a third limiter 25 are required to limit the moving 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, and the second limiter 24 is a limiter block and is provided with two, located on both sides of the width direction of the connecting portion 32, and also includes a third limiter 25 located in front of the conversion portion 31, the third limiter 25 conflicts with the second end 312, and the second limiter 24 and the third limiter 25 are surrounded together to form a first limit space 26 for the transmission member 3 to move. Similarly, the first limiting member 23 is a limiting block, and two first limiting members 23 are provided to be installed on both sides of the connection block 22 perpendicular to the core pulling direction d. The wall surface where the first limiting member 23 and the connection block 22 are attached forms a limiting surface 231, and a second limiting space 27 for the connection block 22 to move is formed between the two first limiting members 23. The connection block 22 is at least partially raised toward the limiting surface 231 to form a convex portion 226. Correspondingly, a slide 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. The convex portion 226 cooperates with the slide groove 232, similar to the cooperation between a "slider" and a "guide rail", so that the convex portion 226 can only move along the path set by the slide groove 232, thereby more accurately and efficiently limiting the connection block 22 to only move along the core pulling direction d.

[0057] In addition to the above, the present solution also needs to solve the following three technical problems: First, it can avoid interference between the cooling pipe 15 when it is installed on the die-casting machine; second, when a protruding component 16 such as a driving source 21 is provided on the ground side of the casting mold, a ground assembly method can also be realized; third, it can avoid collision between the demolding slider and the ejector pin 122 during the demolding process.

[0058] For this reason, Fig.17As shown, in this embodiment, the movable mold 12 is also 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. With such a design, the mold foot 14 not only has the original function of supporting the movable mold 12, but also has a sufficient volume to open a plurality of mutually independent fluid channels 141, so that it can be used for the transfer of the pipeline 15 to avoid interference of the pipeline 15 when it is installed in the die-casting machine, so the mold foot 14 has the function of "one thing for two purposes". Regarding the second technical problem, a frame structure 4 is provided on the ground side of the casting mold, and the frame structure 4 is supported on the ground so that the protruding part 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 part 41 connected to the fixed mold 11 and a second frame part 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 part 16 on the ground side of the casting mold from being damaged by pressure due to contact with the ground. On the other hand, the frame structure 4 is also divided into a first frame part 41 and a second frame part 42. As the fixed mold 11 and the movable mold 12 are separated, the first frame part 41 and the second frame part 42 can be separated from each other along with the fixed mold 11 and the movable mold 12. In addition, since the mold foot 14 in this embodiment is provided with a plurality of 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 part 42 also extends from the mold 12 toward the mold foot 14 and connects with the mold foot 14. Finally, see Fig.16 , the movable mold 12 is also provided with a top plate 121 for ejecting the workpiece A to be processed, and a plurality of ejectors 122 extending toward the fixed mold 11 are distributed on the top plate 121, and the top plate 121 can carry each ejector 122 to move toward or away from the fixed mold 111, so that the ejector 122 switches between the reset state and the ejection state, and the movable mold 12 is also provided with a sensor 123 for identifying whether the ejector 122 is in the reset state, and the sensor 123 can adjust the installation position toward or away from the fixed mold 11 through the connecting piece 124. The reason for setting 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, and through the sensor 123, the position of the top plate 121 can be identified to ensure that the ejector 122 is in the reset state, and then the movement of the slider is controlled to avoid interference with the ejector 122, and the connecting piece 124 in this embodiment is a structure with multiple installation holes in the length direction.

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

[0060] like Fig.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; Fig.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 movable 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) can move perpendicularly 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 separated from 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 arranged on the fixed mold (11) and / or the movable mold (12) and is used to be 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) and comprising a driving source (21) for pulling 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 also arranged adjacent to the connecting block (22), wherein a limiting surface (231) of the first limiting member (23) in contact with the outer 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); Features: A matching hole (221) is provided at the center of the connection block (22), the matching hole (221) coincides with a plane of a 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 also 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 can pass through the matching hole (221) to contact 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); the transmission member (3) and the axis of the power output rod (211) also have an angle (β) between them and jointly form the second mounting plane (m2).

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 force and a connection portion (32) for connecting to the power output rod (211); an 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 force.

3. The casting mold according to claim 2, characterized in that: The movable core (13) comprises 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, comprising 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 interlaced 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 surface and the rear side surface 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) on both sides that are parallel to the second installation plane (m2). 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 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.

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), and a third limiting member (25) is also provided in front of the conversion portion (311), and the third limiting member (25) is in conflict with the second end portion (312), and 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 claims 1 to 6, characterized in that: The fixed mold (11) and / or the movable mold (12) are also 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) comprises a first frame part (41) connected to the fixed mold (11) and a second frame part (42) connected to the movable mold (12) and movable 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 also 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), so that the ejector pins (122) can switch between a reset state and an ejection state. The movable mold (12) is also provided with a sensor (123) for identifying whether the ejector pins (122) are in a reset state. The sensor (123) can adjust its installation position toward or away from the fixed mold (11) through a connecting piece (124).

Images