Casting mold

Abstract

The invention relates to the technical field of automobile manufacturing, in particular to a casting mold which comprises an upper mold base, a lower mold base, an ejector rod, a driving mechanism and a transmission mechanism. A first cavity groove and a second cavity groove are formed in a group of opposite side walls of the lower mold base, the first cavity groove and the second cavity groove both communicate with the lower cavity, a first replacement plate is slidably connected into the first cavity groove, and a second replacement plate is slidably connected into the second cavity groove; the driving mechanism is connected with the first replacement plate and the second replacement plate and can drive the first replacement plate and the second replacement plate to move. The ejector rod is arranged below the lower cavity and communicates with the lower cavity, the transmission mechanism is arranged on the outer wall of one side of the lower die base and is in transmission connection with the driving mechanism and the ejector rod, and when the driving mechanism drives the first replacement plate or the second replacement plate to move, the transmission mechanism synchronously drives the ejector rod to jack the cast parts in the lower cavity. According to the casting mold, the damage rate of demolding of the ejector rod can be remarkably reduced.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, and more specifically to a casting mold. Background Technology

[0002] As an important component of the manufacturing industry, the casting mold industry is indispensable in industrial production. The automotive parts manufacturing industry is one of the fields where molds are used most extensively. With the rapid development of the automotive industry, the requirements for casting molds for automotive parts are becoming increasingly stringent.

[0003] Currently, traditional automotive parts casting molds have ejector pins in the lower groove. After casting, the ejector pins lift the cast parts to achieve demolding. However, the inner wall of the casting mold needs to have the same texture as the corresponding area of ​​the automotive parts to be cast. This results in significant resistance between the inner wall and the cast parts after casting due to the intersection of textures. When the ejector pin lifts the parts, the high side demolding resistance can easily damage the cast parts during demolding. Summary of the Invention

[0004] (i) The technical problem to be solved by the present invention is that existing casting molds are prone to damage to the cast automotive parts during demolding due to the large side demolding resistance.

[0005] (II) Technical Solution To address the aforementioned technical problems, embodiments of the present invention provide a casting mold, comprising an upper mold base, a lower mold base, an ejector rod, a drive mechanism, and a transmission mechanism; The upper mold base is located above the lower mold base. The lower mold base has a lower cavity inside. A first cavity groove and a second cavity groove are formed on a set of opposite side walls of the lower mold base. The first cavity groove and the second cavity groove are both connected to the lower cavity. A first replacement plate is slidably connected in the first cavity groove, and a second replacement plate is slidably connected in the second cavity groove. The first cavity and the second cavity are respectively provided with the driving mechanism on the side opposite to the lower cavity. The driving mechanism is connected to the first replacement plate and the second replacement plate respectively, and can drive the first replacement plate to move along the thickness direction of the first cavity and the second replacement plate along the thickness direction of the second cavity respectively. The push rod is located below the lower cavity and communicates with the lower cavity. The transmission mechanism is located on the outer wall of one side of the lower mold base. The transmission mechanism is connected to the driving mechanism and the push rod respectively. When the driving mechanism drives the first replacement plate or the second replacement plate to move, it drives the push rod to lift the cast parts in the lower cavity through the transmission mechanism.

[0006] Furthermore, the drive mechanism includes a mounting bracket and a hydraulic telescopic rod; The mounting bracket is fixed on the outer wall of the lower mold base, and the mounting bracket is located on the side of the first cavity and the second cavity away from the lower cavity, respectively. One end of the hydraulic telescopic rod is connected to the side of the mounting bracket facing the lower cavity, and the other end is connected to the side of the first replacement plate or the second replacement plate away from the lower cavity, respectively. The first cavity has a set of opposite sidewalls respectively provided with a first slider, and the second cavity has a set of opposite sidewalls respectively provided with a second slider. The sidewall of the first replacement plate corresponding to the first slider is provided with a first groove, and the sidewall of the second replacement plate corresponding to the second slider is provided with a second groove. The first slider can slide in cooperation with the first groove, and the second slider can slide in cooperation with the second groove.

[0007] Furthermore, the transmission mechanism includes a transmission gear plate, a first transmission assembly, and a second transmission assembly; The transmission gear plate is disposed on the side of the first replacement plate or the second replacement plate away from the lower cavity, the first transmission assembly is disposed on the outer side wall of the lower mold base, and the transmission gear plate is connected to the first transmission assembly in a transmission manner. The lower mold base has a transmission groove located below the first transmission component. The second transmission component is disposed in the transmission groove, and the end of the second transmission component protrudes from the side wall of the lower mold base and is connected to the first transmission component to drive the second transmission component to move closer to or away from the push rod along the extension direction of the transmission groove.

[0008] Furthermore, the first transmission assembly includes a worm gear seat, a worm, a driven gear, a driven worm, and a transmission gear; Two worm gear seats are spaced apart on the outer wall of the lower mold seat along its length. The worm is rotatably connected between the two worm gear seats. The worm is provided with a driven gear, and the worm can rotate synchronously with the driven gear. The driven gear meshes with the transmission gear plate. The driven worm is provided on the outer wall of the lower mold seat and meshes with the worm. The transmission gear is fixed on the side of the driven worm facing away from the lower mold seat and is connected to the second transmission assembly.

[0009] Furthermore, the second transmission assembly includes a screw seat, a screw, a worm gear, and a threaded abutment; Two screw seats are spaced apart in the transmission groove along the extension direction of the transmission groove. The screw is rotatably connected between the two screw seats. One end of the screw protrudes from the side wall of the lower mold seat and is provided with the worm gear. The worm gear meshes with the transmission gear. The other end of the screw is threadedly connected to the threaded abutment. The threaded abutment is slidably connected to the inner wall of the transmission groove.

[0010] Furthermore, the screw has an internal through hole along its length, and a plug rod is threaded into the through hole. A rotating handle is fixed to the end of the plug rod.

[0011] Furthermore, a lifting groove is provided on the lower mold base corresponding to the lower cavity, and the push rod is slidably connected in the lifting groove. The end of the push rod away from the lower cavity is provided with an inclined surface, which is located on the side facing the threaded abutment.

[0012] Furthermore, the casting mold also includes a preheating mechanism, which is respectively disposed on the upper mold base and the lower mold base, for preheating the upper mold base and the lower mold base.

[0013] Furthermore, the preheating mechanism includes a steam generator, an upper preheating tank, and a lower preheating tank; A mounting plate is fixedly provided at the bottom of one side of the lower mold base, and the steam generator is mounted on the mounting plate; The upper preheating tank is opened along the length of the upper mold base. The upper preheating tank has an upper air inlet at one end facing the steam generator and an upper air outlet at the other end. The lower preheating tank is opened along the length of the lower mold base. The lower preheating tank has a lower air inlet at one end facing the steam generator and a lower air outlet at the other end. The upper air inlet is connected to the air outlet of the steam generator through a first pipe, and the lower air inlet is connected to the air outlet of the steam generator through a second pipe.

[0014] Furthermore, a connecting hose is provided between the first pipe and the upper air inlet, and an air outlet hose is connected between the upper air outlet pipe and the lower air outlet pipe.

[0015] The beneficial effects of this invention are: This invention provides a casting mold, comprising an upper mold base, a lower mold base, an ejector rod, a driving mechanism, and a transmission mechanism. A set of opposing sidewalls of the lower mold base are respectively provided with a first cavity and a second cavity, both of which communicate with a lower cavity formed by the lower mold base. A first replacement plate and a second replacement plate are slidably connected within the first and second cavity, respectively. A driving mechanism is provided on the side of the first and second cavity facing away from the lower cavity, and the driving mechanism is also connected to the first and second replacement plates, respectively. The driving mechanism drives the first replacement plate to move along the thickness direction of the first cavity and the second replacement plate to move along the thickness direction of the second cavity. Simultaneously, due to the transmission mechanism being connected to… The drive mechanism and the ejector rod are connected by a transmission. When the drive mechanism moves the first or second replacement plate, it simultaneously drives the ejector rod through the transmission mechanism to lift the cast parts in the lower cavity. This replaces the corresponding casting surfaces on both sides of the lower cavity inside the lower mold base with the first and second replacement plates, which can move. After the automotive parts are cast, the drive mechanism is activated to move the two replaced casting surfaces away from the lower cavity, thus moving the first and second replacement plates. At this time, the demolding resistance on the side is significantly reduced. Then, the ejector rod is simultaneously driven to rise through the transmission mechanism to lift the cast automotive parts and complete the demolding, significantly reducing the damage rate of the ejector rod during demolding. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A front structural diagram of a casting mold provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the back structure of a casting mold provided in an embodiment of the present invention; Figure 3 This is a front structural cross-sectional view of the casting mold provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the lower cavity structure of the casting mold provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the ejector pin structure of a casting mold provided in an embodiment of the present invention; Figure 6 This is a side view of the casting mold provided in an embodiment of the present invention; Figure 7 An exploded structural diagram of the second transmission component of the casting mold provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the first replacement plate structure of the casting mold provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the second replacement plate structure of the casting mold provided in an embodiment of the present invention.

[0018] icon: 100 - Upper mold base; 101 - Support frame; 102 - Upper preheating tank; 103 - Upper air inlet; 104 - Upper air outlet pipe; 105 - First pipe; 106 - Connecting hose; 107 - Air outlet hose; 108 - Connecting support plate; 200 - Lower mold base; 201 - Lower cavity; 202 - First cavity groove; 2021 - First slider; 203 - Second cavity groove; 2031 - Second slider; 204 - First replacement plate; 2041 - First slide groove; 205 - Second replacement plate; 2051 - Second slide groove; 206 - Mounting plate; 207 - Lower preheating groove; 208 - Lower air inlet; 209 - Lower air outlet pipe; 210 - Second pipe; 300-top rod; 400 - Mounting bracket; 500 - Transmission gear plate; 501 - Worm gear seat; 502 - Worm; 503 - Driven gear; 504 - Driven worm gear; 505 - Transmission gear; 506 - Screw seat; 5061 - Vent groove; 507 - Screw; 5071 - Added through hole; 5072 - Plug rod; 5073 - Rotating handle; 508 - Worm gear; 509 - Threaded stop block; 600 - Steam generator; 601 - Steam outlet. Detailed Implementation

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0022] Example 1 like Figures 1 to 9 As shown, the present invention provides a casting mold, including an upper mold base 100, a lower mold base 200, an ejector rod 300, a driving mechanism, and a transmission mechanism; The upper mold base 100 is located above the lower mold base 200. The lower mold base 200 has a lower cavity 201 inside. A first cavity groove 202 and a second cavity groove 203 are opened on a set of opposite side walls of the lower mold base 200. The first cavity groove 202 and the second cavity groove 203 are both connected to the lower cavity 201. A first replacement plate 204 is slidably connected in the first cavity groove 202, and a second replacement plate 205 is slidably connected in the second cavity groove 203. The first cavity 202 and the second cavity 203 are respectively provided with driving mechanisms on the side opposite to the lower cavity 201. The driving mechanisms are respectively connected to the first replacement plate 204 and the second replacement plate 205, and can respectively drive the first replacement plate 204 to move along the thickness direction of the first cavity 202 and the second replacement plate 205 along the thickness direction of the second cavity 203. The ejector rod 300 is located below the lower cavity 201 and is connected to the lower cavity 201. The transmission mechanism is located on the outer wall of one side of the lower mold base 200. The transmission mechanism is connected to the drive mechanism and the ejector rod 300 respectively. When the drive mechanism drives the first replacement plate 204 or the second replacement plate 205 to move, it synchronously drives the ejector rod 300 through the transmission mechanism to lift the cast parts in the lower cavity 201.

[0023] In this embodiment, the casting mold includes an upper mold base 100, a lower mold base 200, a push rod 300, a driving mechanism, and a transmission mechanism. A set of opposing sidewalls of the lower mold base 200 are respectively provided with a first cavity 202 and a second cavity 203. Both the first cavity 202 and the second cavity 203 are connected to the lower cavity 201 formed by the lower mold base 200. A first replacement plate 204 and a second replacement plate 205 are slidably connected within the first cavity 202 and the second cavity 203, respectively. A driving mechanism is provided on the side of the first cavity 202 and the second cavity 203 facing away from the lower cavity 201. The driving mechanism is also connected to the first replacement plate 204 and the second replacement plate 205, respectively. The driving mechanism drives the first replacement plate 204 to move along the thickness direction of the first cavity 202 and the second replacement plate 205 along the thickness direction of the second cavity 203. Simultaneously, since the transmission mechanism is connected to the drive mechanism and the ejector rod 300 respectively, when the drive mechanism moves the first replacement plate 204 or the second replacement plate 205, the transmission mechanism synchronously drives the ejector rod 300 to lift the cast parts in the lower cavity 201, replacing the corresponding casting surfaces on both sides of the lower cavity 201 inside the lower mold base 200 with the first replacement plate 204 and the second replacement plate 205 that can be moved. After the automotive parts are cast, the drive mechanism is activated to move the two replaced casting surfaces away from the lower cavity 201, that is, to move the first replacement plate 204 and the second replacement plate 205. At this time, the demolding resistance on the side is significantly reduced. Then, the transmission mechanism synchronously drives the ejector rod 300 to rise, lifting the cast automotive parts to complete the demolding, significantly reducing the damage rate of the ejector rod 300 during demolding.

[0024] In the initial state, the replacement surfaces of the first replacement plate 204 and the second replacement plate 205 are flush with the inner wall of the lower cavity 201, similar to traditional molds. The gaps between the replacement plates and the cavity, as well as the gaps between the ejector pin 300 and the lifting groove, are reasonably designed to balance the smooth flow of molten metal and prevent leakage during processing. Two replacement surfaces are provided, preferably in locations with a larger area and less complex surfaces on the automotive parts, which helps reduce demolding resistance. While having too many replacement surfaces can further reduce demolding resistance, it also increases maintenance costs, accelerates equipment wear, and shortens the equipment's lifespan; therefore, it is not advisable to have too many. The sides of the first replacement plate 204 and the second replacement plate 205 facing the lower cavity 201 are provided with textures required for casting automotive parts.

[0025] Preferably, a support frame 101 is provided above the lower mold base 200. The bottom of the support frame 101 is connected to the upper mold base 100. The lower surface of the top wall of the support frame 101 is connected to the upper mold base 100 through a hydraulic rod. This allows the support frame 101 to guide the upper mold base 100 as it moves toward the lower mold base 200, so that it can accurately cover the upper part of the lower mold base 200.

[0026] According to one embodiment provided by the present invention, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, the drive mechanism includes a mounting bracket 400 and a hydraulic telescopic rod; The mounting bracket 400 is fixed on the outer wall of the lower mold base 200, and the mounting bracket 400 is located on the side of the first cavity 202 and the second cavity 203 facing away from the lower cavity 201. One end of the hydraulic telescopic rod is connected to the side of the mounting bracket 400 facing the lower cavity 201, and the other end is connected to the side of the first replacement plate 204 or the second replacement plate 205 facing away from the lower cavity 201. The first cavity 202 has a set of opposite sidewalls provided with a first slider 2021, and the second cavity 203 has a set of opposite sidewalls provided with a second slider 2031. The sidewall of the first replacement plate 204 corresponding to the first slider 2021 has a first groove 2041, and the sidewall of the second replacement plate 205 corresponding to the second slider 2031 has a second groove 2051. The first slider 2021 can slide in conjunction with the first groove 2041, and the second slider 2031 can slide in conjunction with the second groove 2051.

[0027] In this embodiment, the mounting bracket 400 includes two opposing upright plates arranged in parallel. One end of each upright plate is directly fixed to the outer wall of the lower mold base 200, and is located on the side of the first cavity 202 and the second cavity 203 facing away from the lower cavity 201, respectively. The other end of each upright plate is connected to a horizontal plate, which surrounds the first cavity 202 and the second cavity 203. The side of the horizontal plate facing the lower cavity 201 is fixedly connected to one end of a hydraulic telescopic rod. At the same time, the output end of the hydraulic telescopic rod is respectively connected to the corresponding first replacement plate 204 or second replacement plate. The replacement plate 205 is connected to the side facing away from the lower cavity 201, so that the first replacement plate 204 can be moved simultaneously along the thickness direction of the first cavity groove 202 and the second replacement plate 205 along the thickness direction of the second cavity groove 203 via the hydraulic telescopic rod. Preferably, the control terminal can be connected to the two hydraulic telescopic rods respectively. The operator can control the two hydraulic telescopic rods to move the first replacement plate 204 and the second replacement plate 205 synchronously through the control terminal, so as to reduce the demolding resistance on both sides of the cast automotive parts, and facilitate the subsequent demolding by the ejector rod 300 through lifting.

[0028] To ensure that the first replacement plate 204 can move along the thickness direction of the first cavity 202 and the second replacement plate 205 can move along the thickness direction of the second cavity 203, a first slider 2021 is provided on a set of opposite sidewalls of the first cavity 202, and a second slider 2031 is provided on a set of opposite sidewalls of the second cavity 203. A first groove 2041 is formed on the sidewall of the first replacement plate 204 corresponding to the first slider 2021, and a second groove 2051 is formed on the sidewall of the second replacement plate 205 corresponding to the second slider 2031. The movement is facilitated by the first slider 2021 and the first groove... 2041. The second slider 2031 and the second slide groove 2051 are slidably engaged so that the first replacement plate 204 can move along the thickness direction of the first cavity groove 202 and the second replacement plate 205 can move along the thickness direction of the second cavity groove 203. The side wall of the first replacement plate 204 without the first slider 2021 can slide relative to the inner wall surface corresponding to the first cavity groove 202, and the side wall of the second replacement plate 205 without the second slider 2031 can slide relative to the inner wall surface corresponding to the second cavity groove 203, so as not to interfere with the movement of the first replacement plate 204 and the second replacement plate 205.

[0029] According to one embodiment provided by the present invention, such as Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the transmission mechanism includes a transmission gear plate 500, a first transmission assembly, and a second transmission assembly; The transmission gear plate 500 is disposed on the side of the first replacement plate 204 or the second replacement plate 205 facing away from the lower cavity 201, and the first transmission assembly is disposed on the outer side wall of the lower mold base 200. The transmission gear plate 500 is connected to the first transmission assembly in a transmission manner. The lower mold base 200 has a transmission groove located below the first transmission component. The second transmission component is located inside the transmission groove. The end of the second transmission component protrudes from the side wall of the lower mold base 200 and is connected to the first transmission component to drive the second transmission component to move closer to or away from the ejector rod 300 along the extension direction of the transmission groove.

[0030] In this embodiment, either the first replacement plate 204 or the second replacement plate 205 has a transmission toothed plate 500 on its side facing away from the lower cavity 201. One end of the transmission toothed plate 500 is connected to the outer wall of either the first replacement plate 204 or the second replacement plate 205. The side of the transmission toothed plate 500 facing the first transmission assembly has transmission teeth. Through the transmission toothed plate 500's transmission connection with the first transmission assembly, the first transmission assembly can be rotated synchronously via the transmission toothed plate 500 when the hydraulic telescopic rod drives the first replacement plate 204 and the second replacement plate 205 to move. Simultaneously, due to the lower cavity 201... The mold base 200 is located below the first transmission assembly and has a transmission groove. The second transmission assembly is arranged in the transmission groove, and the end of the second transmission assembly protrudes from the side wall of the lower mold base 200 and is connected to the first transmission assembly. The first transmission assembly drives the second transmission assembly to move closer to or away from the ejector rod 300 along the extension direction of the transmission groove. That is, when the first replacement plate 204 and the second replacement plate 205 are moved by the hydraulic telescopic rod, the first transmission assembly can be rotated synchronously, thereby driving the second transmission assembly to move closer to or away from the ejector rod 300, so as to drive the ejector rod 300 to lift and demold.

[0031] According to one embodiment provided by the present invention, such as Figure 2 , Figure 5 and Figure 6 As shown, the first transmission assembly includes a worm gear seat 501, a worm gear 502, a driven gear 503, a driven worm gear 504, and a transmission gear 505; Two worm gear seats 501 are spaced apart on the outer wall of the lower mold seat 200 along the length of the lower mold seat 200. A worm 502 is rotatably connected between the two worm gear seats 501. A driven gear 503 is provided on the worm 502. The worm 502 can rotate synchronously with the driven gear 503. The driven gear 503 is meshed with the transmission gear plate 500. A driven worm 504 is provided on the outer wall of the lower mold seat 200. The driven worm 504 is meshed with the worm 502. A transmission gear 505 is fixed on the side of the driven worm 504 away from the lower mold seat 200. The transmission gear 505 is connected to the second transmission assembly.

[0032] In this embodiment, two worm gear seats 501 are fixedly mounted on the outer wall of the lower mold base 200. A worm 502 is rotatably connected between the two worm gear seats 501. A driven gear 503 is fixedly connected to one side of the surface of the worm 502. The driven gear 503 meshes with the transmission sawtooth provided below the transmission gear plate 500. Since the worm 502 can rotate synchronously with the driven gear 503, when the transmission gear plate 500 drives the driven gear 503 to rotate, it can drive the worm 502 to rotate synchronously. A driven worm gear 504 is also provided on the outer wall of the lower mold base 200. The driven worm gear 504 is located on the worm. Below 502, the driven turbine 504 is meshed with the worm gear 502, so that the driven turbine 504 can rotate synchronously when the worm gear 502 rotates. The side of the driven turbine 504 away from the lower mold base 200 is also provided with a transmission gear 505. The transmission gear 505 is connected to the second transmission component, so that the driven gear 503 can be rotated through the transmission gear plate 500, and the worm gear 502 rotates synchronously. The worm gear 502 drives the driven turbine 504 to rotate synchronously, which in turn drives the transmission gear 505 meshed with the driven turbine 504 to rotate, thereby driving the second transmission component to move.

[0033] According to one embodiment provided by the present invention, such as Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the second transmission assembly includes a screw seat 506, a screw 507, a worm gear 508, and a threaded abutment 509; Two screw seats 506 are spaced apart in the transmission groove along the extension direction of the transmission groove. A screw 507 is rotatably connected between the two screw seats 506. One end of the screw 507 protrudes from the side wall of the lower mold seat 200 and is provided with a worm gear 508. The worm gear 508 is meshed with the transmission gear 505. The other end of the screw 507 is threadedly connected to a threaded abutment 509. The threaded abutment 509 is slidably connected to the inner wall of the transmission groove.

[0034] In this embodiment, both screw seats 506 are disposed in the transmission groove. Preferably, the outer wall surface of one screw 507 is on the same plane as the outer wall surface of the lower mold seat 200. The two screw seats 506 are rotatably connected to the screw 507. One end of the screw 507 protrudes from the screw seat 506 and is fixedly provided with a worm gear 508. The worm gear 508 is meshed with the transmission gear 505, thereby driving the worm gear 508 to rotate, so as to drive the screw 507 to rotate synchronously. The rotation of the screw 507 causes the threaded abutment 509 to move inside the transmission groove, thereby abutting the ejector rod 300, so that it can be lifted to achieve demolding.

[0035] Preferably, a vent groove 5061 is provided on the top of one end of each of the two screw seats 506 to prevent the screw seat 506 from sticking to the inner wall of the transmission groove to form a completely sealed space, to prevent the push rod 300 from being difficult to reset, and to facilitate the push rod 300 to reset by its own weight.

[0036] According to one embodiment provided by the present invention, such as Figure 1 and Figure 2 As shown, the screw 507 has an additional through hole 5071 inside along its own length direction. A plug rod 5072 is internally threaded into the additional through hole 5071. A rotating handle 5073 is fixed at the end of the plug rod 5072.

[0037] In this embodiment, the temperature at the locations of the screw 507 and the threaded abutment 509 is relatively high. Therefore, an addition through hole 5071 is provided, which allows molybdenum disulfide grease to be added into the threaded hole of the threaded abutment 509 through a long tube. During use, the grease can be evenly spread, and this molybdenum disulfide grease can also form a lubricating layer at high temperatures, which is not easy to lose, thus ensuring the stability of the transmission between the screw 507 and the threaded abutment 509. A short thread is provided at one end of the addition through hole 5071 near the threaded abutment 509, and a short thread is also provided at one end of the plug rod 5072. This allows the addition through hole 5071 to be plugged after the lubricant is added, and since only a short thread is provided, it is easy to unscrew.

[0038] According to one embodiment provided by the present invention, such as Figure 7 As shown, the lower mold base 200 corresponding to the lower cavity 201 has a lifting groove, and the ejector rod 300 is slidably connected in the lifting groove. The end of the ejector rod 300 away from the lower cavity 201 has an inclined surface, which is located on the side facing the threaded abutment block 509.

[0039] In this embodiment, one end face of the threaded abutment 509 has a rounded corner and is an arc surface, and this arc surface abuts against the inclined surface of the ejector rod 300. Initially, the threaded abutment 509 leaves a certain distance from the ejector rod 300, which can ensure that the first replacement plate 204 and the second replacement plate 205 are completely separated from the casting before the ejector rod 300 is started. The threaded abutment 509 abuts against the inclined surface of the ejector rod 300 and continues to move to push the ejector rod 300 out, thereby realizing the demolding of the casting. Furthermore, a vent groove 5061 is provided on the screw seat 506 to prevent the ejector rod 300 from being difficult to reset. The ejector rod 300 can reset by its own gravity.

[0040] According to one embodiment provided by the present invention, such as Figure 1 , Figure 2 and Figure 3As shown, the casting mold also includes a preheating mechanism, which is respectively located on the upper mold base 100 and the lower mold base 200, and is used to preheat the upper mold base 100 and the lower mold base 200.

[0041] In this embodiment, by setting a preheating mechanism to preheat the upper mold base 100 and the lower mold base 200, the temperature difference between the casting mold and the molten metal provided in this embodiment is reduced, which can greatly reduce the situation of sticking to the mold and cracks on the surface of the casting.

[0042] According to one embodiment provided by the present invention, such as Figure 1 , Figure 2 and Figure 3 As shown, the preheating mechanism includes a steam generator 600, an upper preheating tank 102, and a lower preheating tank 207; A mounting plate 206 is fixedly provided on the bottom of one side of the lower mold base 200, and the steam generator 600 is mounted on the mounting plate 206; The upper preheating tank 102 is opened along the length of the upper mold base 100. The upper preheating tank 102 has an upper air inlet 103 at one end facing the steam generator 600 and an upper air outlet 104 at the other end. The lower preheating tank 207 is opened along the length of the lower mold base 200. The lower preheating tank 207 has a lower air inlet 208 at one end facing the steam generator 600 and a lower air outlet 209 at the other end. The upper air inlet 103 is connected to the air outlet 601 of the steam generator 600 through the first pipe 105, and the lower air inlet 208 is connected to the air outlet 601 of the steam generator 600 through the second pipe 210.

[0043] Furthermore, a connecting hose 106 is provided between the first pipe 105 and the upper air inlet 103, and an air outlet hose 107 is connected between the upper air outlet pipe 104 and the lower air outlet pipe 209.

[0044] In this embodiment, the upper preheating tank 102 and the lower preheating tank 207 are respectively opened on the upper mold base 100 and the lower mold base 200. The bottom of one end of the lower mold base 200 is fixedly connected to the mounting plate 206. The upper surface of the mounting plate 206 is fixedly installed with a steam generator 600. The steam generated by the steam generator 600 can preheat the casting mold provided in this embodiment to a temperature of 200-350 degrees, thereby reducing the temperature difference between the casting mold of the automotive parts and the molten metal.

[0045] The steam generator 600 has two air outlets 601 at one end. The upper preheating tank 102 is fixedly connected to an upper air inlet 103 and an upper air outlet 104 at both ends, respectively. The lower preheating tank 207 is fixedly connected to a lower air inlet 208 and a lower air outlet 209 at both ends, respectively. A first pipe 105 is fixedly connected between one air outlet 601 and the upper air inlet 103, and a second pipe 210 is fixedly connected between the other air outlet 601 and the lower air inlet 208. A connecting hose 106 is fixedly connected between pipe 105 and upper air inlet 103; a connecting support plate 108 is fixedly connected between lower air outlet pipe 209 and support frame 101; and an air outlet hose 107 is fixedly connected between upper air outlet pipe 104 and lower air outlet pipe 209. In use, the steam generator 600 can be of various types, and the air outlet 601 can be single or multiple. Steam is generated by the control mechanism inherent in the casting mold itself and discharged through two air outlets 601. The preheating of the upper mold base 100 is discharged to the outside through one of the air outlets 601 via the first pipe 105, connecting hose 106, upper air inlet 103, upper preheating tank 102, upper air outlet pipe 104, air outlet hose 107, and lower air outlet pipe 209. The preheating of the lower mold base 200 is discharged to the outside through the other air outlet 601 via the second pipe 210, lower air inlet 208, lower preheating tank 207, and lower air outlet pipe 209. Steam passes through the upper preheating tank 102 and the lower preheating tank 209. At 07:00, heat exchange occurs to preheat the upper mold base 100 and the lower mold base 200. The connecting hose 106 and the air outlet hose 107 can still be connected during the process of the upper mold base 100 being raised and lowered along the height direction of the support frame 101. Both the connecting hose 106 and the air outlet hose 107 have a certain amount of slack. The exhaust end of the lower air outlet pipe 209 faces upwards. Furthermore, the outer surfaces of the upper air outlet pipe 104 and the lower air outlet pipe 209 are both provided with a heat insulation layer to prevent workers from being burned.

[0046] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A casting mold, characterized in that, It includes an upper mold base (100), a lower mold base (200), an ejector pin (300), a drive mechanism, and a transmission mechanism; The upper mold base (100) is located above the lower mold base (200). The lower mold base (200) has a lower cavity (201) inside. A first cavity groove (202) and a second cavity groove (203) are provided on a set of opposite side walls of the lower mold base (200). The first cavity groove (202) and the second cavity groove (203) are both connected to the lower cavity (201). A first replacement plate (204) is slidably connected in the first cavity groove (202), and a second replacement plate (205) is slidably connected in the second cavity groove (203). The first cavity (202) and the second cavity (203) are respectively provided with the driving mechanism on the side away from the lower cavity (201). The driving mechanism is connected to the first replacement plate (204) and the second replacement plate (205) respectively, and can drive the first replacement plate (204) to move along the thickness direction of the first cavity (202) and the second replacement plate (205) along the thickness direction of the second cavity (203) respectively. The push rod (300) is located below the lower cavity (201) and communicates with the lower cavity (201). The transmission mechanism is located on the outer wall of one side of the lower mold base (200). The transmission mechanism is connected to the driving mechanism and the push rod (300) respectively. When the driving mechanism drives the first replacement plate (204) or the second replacement plate (205) to move, it drives the push rod (300) to lift the cast parts in the lower cavity (201) through the transmission mechanism.

2. The casting mold according to claim 1, characterized in that, The drive mechanism includes a mounting bracket (400) and a hydraulic telescopic rod; The mounting bracket (400) is fixed on the outer wall of the lower mold base (200), and the mounting bracket (400) is located on the side of the first cavity (202) and the second cavity (203) away from the lower cavity (201). One end of the hydraulic telescopic rod is connected to the side of the mounting bracket (400) facing the lower cavity (201), and the other end is connected to the side of the first replacement plate (204) or the second replacement plate (205) away from the lower cavity (201). The first cavity (202) has a set of opposite sidewalls respectively provided with a first slider (2021), and the second cavity (203) has a set of opposite sidewalls respectively provided with a second slider (2031). The sidewall of the first replacement plate (204) corresponding to the first slider (2021) is provided with a first groove (2041), and the sidewall of the second replacement plate (205) corresponding to the second slider (2031) is provided with a second groove (2051). The first slider (2021) can slide in cooperation with the first groove (2041), and the second slider (2031) can slide in cooperation with the second groove (2051).

3. The casting mold according to claim 2, characterized in that, The transmission mechanism includes a transmission gear plate (500), a first transmission assembly, and a second transmission assembly; The transmission gear plate (500) is disposed on the side of the first replacement plate (204) or the second replacement plate (205) away from the lower cavity (201), the first transmission assembly is disposed on the outer side wall of the lower mold base (200), and the transmission gear plate (500) is connected to the first transmission assembly in a transmission manner. The lower mold base (200) has a transmission groove located below the first transmission component. The second transmission component is located in the transmission groove. The end of the second transmission component protrudes from the side wall of the lower mold base (200) and is connected to the first transmission component to drive the second transmission component to move closer to or away from the push rod (300) along the extension direction of the transmission groove.

4. The casting mold according to claim 3, characterized in that, The first transmission assembly includes a worm gear seat (501), a worm (502), a driven gear (503), a driven worm (504), and a transmission gear (505). Two worm gear seats (501) are spaced apart on the outer wall of the lower mold base (200) along the length direction of the lower mold base (200). The worm (502) is rotatably connected between the two worm gear seats (501). The driven gear (503) is provided on the worm (502). The worm (502) can rotate synchronously with the driven gear (503). The driven gear (503) is meshed with the transmission gear plate (500). The driven turbine (504) is provided on the outer wall of the lower mold base (200). The driven turbine (504) is meshed with the worm (502). The transmission gear (505) is fixed on the side of the driven turbine (504) away from the lower mold base (200). The transmission gear (505) is connected to the second transmission assembly.

5. The casting mold according to claim 4, characterized in that, The second transmission assembly includes a screw seat (506), a screw (507), a worm gear (508), and a threaded abutment (509); Two screw seats (506) are spaced apart in the transmission groove along the extension direction of the transmission groove. The screw (507) is rotatably connected between the two screw seats (506). One end of the screw (507) protrudes from the side wall of the lower mold seat (200) and is provided with the worm gear (508). The worm gear (508) meshes with the transmission gear (505). The other end of the screw (507) is threadedly connected to the threaded abutment (509). The threaded abutment (509) is slidably connected to the inner wall of the transmission groove.

6. The casting mold according to claim 5, characterized in that, The screw (507) has an addition through hole (5071) inside along its own length direction. A plug rod (5072) is threaded into the addition through hole (5071). A rotating handle (5073) is fixed at the end of the plug rod (5072).

7. The casting mold according to claim 5, characterized in that, The lower mold base (200) corresponding to the lower cavity (201) is provided with a lifting groove. The push rod (300) is slidably connected in the lifting groove. The end of the push rod (300) away from the lower cavity (201) is provided with an inclined surface. The inclined surface is provided on the side facing the threaded abutment (509).

8. The casting mold according to any one of claims 1-7, characterized in that, The casting mold also includes a preheating mechanism, which is respectively disposed on the upper mold base (100) and the lower mold base (200) for preheating the upper mold base (100) and the lower mold base (200).

9. The casting mold according to claim 8, characterized in that, The preheating mechanism includes a steam generator (600), an upper preheating tank (102), and a lower preheating tank (207). A mounting plate (206) is fixedly provided on the bottom of one side of the lower mold base (200), and the steam generator (600) is mounted on the mounting plate (206). The upper preheating tank (102) is opened along the length of the upper mold base (100). The upper preheating tank (102) has an upper air inlet (103) at one end facing the steam generator (600) and an upper air outlet (104) at the other end. The lower preheating tank (207) is opened along the length of the lower mold base (200). The lower preheating tank (207) has a lower air inlet (208) at one end facing the steam generator (600) and a lower air outlet (209) at the other end. The upper air inlet (103) is connected to the air outlet (601) of the steam generator (600) through a first pipe (105). The lower air inlet (208) is connected to the air outlet (601) of the steam generator (600) through a second pipe (210).

10. The casting mold according to claim 9, characterized in that, A connecting hose (106) is provided between the first pipe (105) and the upper air inlet (103), and an air outlet hose (107) is connected between the upper air outlet pipe (104) and the lower air outlet pipe (209).

Images