Gearbox selection and shift housing die-casting mold

Abstract

The utility model relates to die casting mould technical field, concretely relates to a kind of die casting mould of gearbox selecting and changing gear shell, including fixed mould seat, the movable mould seat of setting in the one side of fixed mould seat, pull mechanism being set on movable mould seat, first mould being set on movable mould seat and second mould being set on fixed mould seat, the first mould and second mould jointly constitute casting mould, and die cavity is formed in first mould and second mould;The first mould includes fixed seat fixed in the center of movable mould seat, and assembly slot is symmetrically opened in the side of fixed seat, and die half that can move along its inside is installed in assembly slot;The side of second mould is provided with notch;Pouring bushing that can be communicated with notch is installed on fixed mould seat. The present application solves the problem that workpiece is not easy to remove after forming in traditional die casting mould.

Description

Technical Field

[0001] This utility model relates to the field of die-casting mold technology, specifically to a die-casting mold for a gearbox shift housing. Background Technology

[0002] The gearbox shift housing is a key structural component of the gearbox system, responsible for securing and protecting the shift mechanism, transmitting shifting force, and ensuring precise gear changes. It is typically made of high-strength aluminum alloy or cast iron, possessing excellent mechanical properties and durability, capable of withstanding vibrations and impacts under complex operating conditions. The housing's internal design incorporates precise guide grooves and positioning structures to ensure smooth, unobstructed movement of the shift lever or fork, while effectively isolating external impurities and lubricating oil leakage. Its compact structure and rational layout directly affect the smoothness, reliability, and lifespan of the gearbox, making it one of the core components ensuring the vehicle's power transmission efficiency and driving experience. The gearbox shift housing is usually integrally molded using a die-casting mold.

[0003] Chinese patent CN206717000U discloses a die-casting mold and die-casting apparatus, relating to the field of mold processing technology. The die-casting mold includes a matching male mold plate and a female mold plate. The male mold plate has a moving mold core, and the female mold plate has a fixed mold core. The moving and fixed mold cores can be closed to form a cavity. A first temperature control device is installed inside the moving mold core, and a second temperature control device is installed inside the fixed mold core. Both the moving and fixed mold cores are made of beryllium bronze. A sprue sleeve is provided on the female mold plate. The die-casting apparatus includes a die-casting machine and the aforementioned die-casting mold. The injection head of the die-casting machine is fitted into the sprue sleeve. The amorphous alloy master alloy liquid cools and solidifies within the cavity formed by the closing of the moving and fixed mold cores. The beryllium bronze moving and fixed mold cores have excellent thermal conductivity, enabling efficient heat transfer from the alloy liquid to the first and second temperature control devices, thus allowing the alloy liquid to cool rapidly and obtain a high-performance amorphous alloy.

[0004] The aforementioned die-casting mold consists of a fixed mold core and a moving mold core. After the die-casting process is completed, the workpiece is embedded in the mold cavity, and all ejector pins require a large pushing force to eject the workpiece. When the ejector pins exert a large force to eject the workpiece, it can damage the workpiece surface. Therefore, a die-casting mold for a gearbox shift housing is proposed. Utility Model Content

[0005] To address the aforementioned problems, a die-casting mold for a gearbox shift housing is provided. The casting liquid is poured into the mold cavity through a sprue bushing. As the casting liquid cools and solidifies within the mold cavity to form the workpiece, a pull-out mechanism moves the mold segments, causing them to slide along the assembly groove. At this point, the mold segments release the workpiece, making it easier to remove. This solves the problem of inconvenient removal of the workpiece after it has been formed in traditional die-casting molds.

[0006] To address the existing technical problems, this application provides a gearbox shift housing die-casting mold, including a fixed mold base, a movable mold base disposed on one side of the fixed mold base, a pull-out mechanism disposed on the movable mold base, a first mold disposed on the movable mold base, and a second mold disposed on the fixed mold base. The first mold and the second mold together constitute a casting mold, and mold cavities are formed inside the first mold and the second mold. The first mold includes a fixed base fixed at the center of the moving mold base. The fixed base has symmetrically opened assembly slots on one side, and mold pieces that can move along the inside of the assembly slots are installed in the assembly slots. The second mold has a slot on one side; The fixed mold base is equipped with a sprue bushing that can communicate with the slot.

[0007] As one technical solution of this application, the pull-out mechanism has four sets. The pull-out mechanism includes a cylinder fixed on the moving mold base. The output end of the cylinder is fixed with a slide block. The slide block can drive the mold piece to slide along the assembly groove.

[0008] As a technical solution of this application, a clearance groove is provided on one side of the moving mold base, and limit blocks for limiting the slide block are symmetrically fixed on both sides of the clearance groove. The slide block has symmetrical protrusions fixed on both sides. The protrusions are located at the bottom of the limiting block, and the upper end face of the protrusion is in contact with the lower end face of the limiting block.

[0009] As one technical solution of this application, the bottom of the gate bushing is provided with a guide column, which is fixed to the top of one of the slides. The top of the guide column is provided with a guide groove on the side facing the slot, which can guide the pouring liquid into the mold cavity.

[0010] As one technical solution of this application, a side slider is fixed on the side of the slide block facing the cylinder, and the side of the side slider away from the slide block is an inclined surface; One side of the fixed mold base is fixed with an extrusion block corresponding to the number of side sliders, and the extrusion block slides in cooperation with the side slider.

[0011] As one technical solution of this application, a plurality of limiting holes are symmetrically opened on one side of the fixed mold base; One side of the moving mold base is fixed with a number of positioning guide rods that correspond one-to-one with the limiting holes, and the positioning guide rods can be inserted into the limiting holes.

[0012] The advantages of this utility model compared to the prior art are: This application pours the casting liquid into the mold cavity through a sprue bushing. As the casting liquid cools and solidifies within the mold cavity to form a workpiece, a pulling mechanism moves the mold segments, causing them to slide along the assembly groove. At this point, the mold segments release the workpiece, making it easier to remove. This solves the problem of inconvenient removal of workpieces after molding in traditional die-casting molds. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of a die-casting mold for a gearbox shift housing.

[0014] Figure 2 This is an exploded view of a die-casting mold for a gearbox shift housing.

[0015] Figure 3 This is an exploded view of the moving mold base in a die-casting mold for a gearbox shift housing.

[0016] Figure 4 This is a three-dimensional view of a casting mold in a gearbox shift housing die-casting mold.

[0017] Figure 5 This is an exploded view of the casting mold in a gearbox shift housing die-casting mold.

[0018] Figure 6 This is a three-dimensional view of a pull-out mechanism in a die-casting mold for a gearbox shift housing.

[0019] Figure 7 yes Figure 2 Enlarged view of point A in the image.

[0020] Figure 8 yes Figure 3 Enlarged view of point B in the image.

[0021] The numbers in the diagram are as follows: 1. Fixed mold base; 11. Sprue bushing; 12. Limiting hole; 13. Extrusion block; 3. Moving mold base; 31. Positioning guide rod; 32. Relief groove; 33. Limiting block; 4. Pull-out mechanism; 41. Cylinder; 42. Slider; 421. Protrusion; 422. Side slider; 51. First mold; 510. Fixed base; 511. Assembly groove; 512. Mold piece; 52. Second mold; 521. Groove; 53. Guide column. Detailed Implementation

[0022] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. See Figures 1-8 As shown, a gearbox shift housing die casting mold includes a fixed mold base 1, a movable mold base 3 disposed on one side of the fixed mold base 1, a pull-out mechanism 4 disposed on the movable mold base 3, a first mold 51 disposed on the movable mold base 3, and a second mold 52 disposed on the fixed mold base 1. The first mold 51 and the second mold 52 together form a casting mold, and mold cavities are formed in the first mold 51 and the second mold 52. The first mold 51 includes a fixed seat 510 fixed at the center of the moving mold base 3. The fixed seat 510 has symmetrically opened assembly grooves 511 on one side. The assembly grooves 511 are equipped with mold pieces 512 that can move along their interior. The second mold 52 has a slot 521 on one side; A sprue bushing 11 that can communicate with the slot 521 is installed on the fixed mold base 1.

[0023] The casting liquid is poured into the mold cavity through the sprue bushing 11. As the casting liquid cools and solidifies into a workpiece within the mold cavity, the pulling mechanism 4 moves the mold segment 512, causing it to slide along the assembly groove 511. At this point, the mold segment 512 releases the workpiece, making it easier to remove. This solves the problem of inconvenient removal of workpieces after molding in traditional die-casting molds.

[0024] See Figure 6 As shown, the pull-out mechanism 4 has four sets. The pull-out mechanism 4 includes a cylinder 41 fixed on the moving mold base 3. The output end of the cylinder 41 is fixed with a slide block 42. The slide block 42 can drive the mold piece 512 to slide along the assembly groove 511.

[0025] In order to enable the mold piece 512 to move, the mold piece 512 is fixed on the slide block 42. When the cylinder 41 is started, the cylinder 41 will drive the mold piece 512 to slide along the assembly groove 511 through the slide block 42.

[0026] See Figure 6 and Figure 8 As shown, a clearance groove 32 is provided on one side of the moving mold base 3, and limit blocks 33 for limiting the slide block 42 are symmetrically fixed on both sides of the clearance groove 32. The slide block 42 has symmetrical protrusions 421 fixed on both sides. The protrusions 421 are located at the bottom of the limiting block 33, and the upper end face of the protrusions 421 is in contact with the lower end face of the limiting block 33.

[0027] To ensure the stability of the slide block 42, limiting blocks 33 are symmetrically fixed on both sides of the relief groove 32, and protrusions 421 are fixed on both sides of the slide block 42. When the cylinder 41 is started, the cylinder 41 will drive the slide block 42 to move through the output end. While the slide block 42 moves, it will slide along the lower end face of the limiting block 33 through the protrusions 421, so that the limiting block 33 and the protrusions 421 cooperate with each other to limit the slide block 42, effectively ensuring the stability of the slide block 42.

[0028] See Figure 3 , Figure 4 and Figure 5 As shown, a guide column 53 is provided at the bottom of the gate bushing 11. The guide column 53 is fixed to the top of one of the slide blocks 42. A guide groove is provided on the side of the guide column 53 facing the slot 521 to guide the casting liquid into the mold cavity.

[0029] When the mold cavity is filled, the filling liquid enters through the sprue bushing 11. When the filling liquid comes into contact with the guide column 53, the filling liquid enters the mold cavity along the guide groove and slot 521 opened on one side of the guide column 53, so that the filling liquid enters the mold cavity quickly.

[0030] See Figure 2 and Figure 6 As shown, a side slider 422 is fixed on the side of the slide block 42 facing the cylinder 41, and the side of the side slider 422 away from the slide block 42 is an inclined surface. One side of the fixed mold base 1 is fixed with an extrusion block 13 corresponding to the number of side sliders 422, and the extrusion block 13 slides with the side slider 422.

[0031] When the fixed mold base 1 and the moving mold base 3 are closed, the extrusion block 13 provided on the moving mold base 3 will extrude the inclined surface on one side of the side slider 422, so that the extrusion block 13 extrudes the mold piece 512 through the side slider 422 and the slide block 42, thereby effectively preventing the mold piece 512 from being stably installed in the assembly slot 511.

[0032] See Figure 2 and Figure 3 As shown, a number of limiting holes 12 are symmetrically opened on one side of the fixed mold base 1; One side of the moving mold base 3 is fixed with a number of positioning guide rods 31 corresponding to the limiting holes 12, and the positioning guide rods 31 can be inserted into the limiting holes 12.

[0033] By fixing several positioning guide rods 31 to one side of the moving mold base 3 and opening limiting holes 12 on one side of the fixed mold base 1, the positioning guide rods 31 will insert into the limiting holes 12 when the fixed mold base 1 and the moving mold base 3 are closed. The cooperation between the positioning guide rods 31 and the limiting holes 12 improves the accurate closing of the fixed mold base 1 and the moving mold base 3, effectively preventing deviation during closing.

[0034] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A die-casting mold for a gearbox shift housing, comprising a fixed mold base (1), a movable mold base (3) disposed on one side of the fixed mold base (1), a pull-out mechanism (4) disposed on the movable mold base (3), a first mold (51) disposed on the movable mold base (3), and a second mold (52) disposed on the fixed mold base (1), characterized in that, The first mold (51) and the second mold (52) together form a casting mold, and mold cavities are formed inside the first mold (51) and the second mold (52); The first mold (51) includes a fixed seat (510) fixed at the center of the moving mold base (3). The fixed seat (510) has symmetrically opened assembly slots (511) on one side. The assembly slots (511) are equipped with mold pieces (512) that can move along their interior. The second mold (52) has a slot (521) on one side; The fixed mold base (1) is equipped with a gate bushing (11) that can communicate with the slot (521).

2. The gearbox shift housing die-casting mold according to claim 1, characterized in that, The pull-out mechanism (4) has four sets. The pull-out mechanism (4) includes a cylinder (41) fixed on the moving mold base (3). The output end of the cylinder (41) is fixed with a slide (42). The slide (42) can drive the mold piece (512) to slide along the assembly groove (511).

3. The gearbox shift housing die-casting mold according to claim 1, characterized in that, The moving mold base (3) has a relief groove (32) on one side, and the relief groove (32) has symmetrically fixed limit blocks (33) on both sides for limiting the slide (42). The slide (42) has symmetrical protrusions (421) fixed on both sides. The protrusions (421) are located at the bottom of the limiting block (33), and the upper end face of the protrusions (421) is in contact with the lower end face of the limiting block (33).

4. The gearbox shift housing die-casting mold according to claim 1, characterized in that, The bottom of the gate bushing (11) is provided with a guide column (53), which is fixed to the top of one of the slides (42). The top of the guide column (53) facing the slot (521) has a guide groove that can guide the pouring liquid into the mold cavity.

5. The gearbox shift housing die-casting mold according to claim 2, characterized in that, The slide block (42) is fixed with a side slider (422) on the side facing the cylinder (41), and the side of the side slider (422) away from the slide block (42) is an inclined surface; One side of the fixed mold base (1) is fixed with an extrusion block (13) corresponding to the number of side sliders (422), and the extrusion block (13) slides with the side slider (422).

6. The gearbox shift housing die-casting mold according to claim 1, characterized in that, The fixed mold base (1) has several limiting holes (12) symmetrically opened on one side; The moving mold base (3) has a fixed number of positioning guide rods (31) that correspond one-to-one with the limiting holes (12) on one side. The positioning guide rods (31) can be inserted into the limiting holes (12).

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