Die-casting die for gearbox shell

Abstract

The utility model relates to the technical field of die-casting dies, in particular to a die-casting die for a gearbox shell, which comprises an upper die fixing plate and a lower die fixing plate, an upper die plate is fixed at the bottom of the upper die fixing plate, a mounting seat is fixed at the top of the lower die fixing plate, and symmetrical lower die plates are movably connected to two sides of the top of the mounting seat. A forming cavity is formed in the connecting position of the two lower die plates, and a connecting mechanism is arranged between the lower die plates and the lower die fixing plate. The two lower mold plates can be fixed at the top of the mounting seat through matching of the connecting rods and the clamping blocks, the two lower mold plates are spliced into a complete lower mold plate, the whole mold can be opened to facilitate cleaning and maintenance, the demolding plates can be lifted through the pressing plates on the two sides, demolding is facilitated, and the problems that in the prior art, the maintenance cost is high, and the demolding efficiency is high can be solved. And meanwhile, the two sides are lack of an auxiliary demolding function, and a machined part is inconvenient to take down when being clamped in a mold cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting molds, in particular to a die-casting mold for a transmission housing. Background Art

[0002] The die-casting mold for the transmission housing is an important tool in the manufacture of automotive parts. Its design and use directly affect the quality and production efficiency of the transmission housing. Therefore, when producing the transmission housing, a specially designed die-casting mold is required for processing to ensure the processing quality of the transmission housing.

[0003] Currently, the die-casting molds are generally divided into an upper mold and a lower mold, and both the upper mold and the lower mold are integrally designed. For example, a die-casting mold for a CVT transmission housing disclosed in the Chinese Patent Publication No. "CN219703457U" includes a lower mold. One side of the lower mold is fixedly connected with a heating block, the other side of the lower mold is fixedly connected with a connector, one side of the connector is communicated with a refrigerator, the surface of the refrigerator is fixedly connected with a display screen, and one side of the refrigerator is communicated with a first connecting pipe.

[0004] In the existing die-casting mold during use, the lower mold is integral. If the mold is damaged after long-term processing, the whole mold needs to be replaced, resulting in a high maintenance cost. At the same time, there is a lack of auxiliary demolding function on both sides. It is not convenient to remove the transmission housing when it is stuck in the mold cavity, which will affect the normal processing. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems in the existing technology, such as high maintenance cost, lack of auxiliary demolding function on both sides, and inconvenience in removing the workpiece when it is stuck in the mold cavity. A die-casting mold for a transmission housing is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] Design a die-casting mold for a transmission housing, including an upper mold fixing plate and a lower mold fixing plate. The bottom of the upper mold fixing plate is fixed with an upper template, the top of the lower mold fixing plate is fixed with a mounting seat, and both sides of the top of the mounting seat are movably connected with symmetric lower templates. A forming cavity is opened at the connection of the two lower templates. A connecting mechanism is arranged between the lower template and the lower mold fixing plate, and a demolding mechanism is arranged between the lower template and the lower mold fixing plate.

[0008] Furthermore, the connecting mechanism includes a plurality of grooves opened on both sides of the mounting seat and connecting rods hinged inside the grooves. The other end of the connecting rod is fixed with a stud. A clamping block and a fastener are respectively arranged on the surface of the stud. T-shaped grooves are opened on both sides of the lower template, and the clamping block abuts against the T-shaped grooves.

[0009] Further, the fastener includes a threaded sleeve which is threadedly connected to the surface of the stud, and knobs are fixed on both sides of the threaded sleeve.

[0010] Further, a limiting circular plate is fixed on the top of the stud, and a fitting groove is formed on the surface of the T-shaped groove and is movably connected to the clamping block.

[0011] Further, the demolding mechanism includes a vertical rod which is movably connected to the joint of the two lower templates. A top plate is fixed on the top of the vertical rod and is embedded inside the molding cavity. A connecting plate is fixed on the bottom of the vertical rod.

[0012] Further, a through groove is formed on the top of the mounting seat. A demolding plate is rotatably connected inside the through groove through a torsion spring. The demolding plate abuts against the connecting plate, and a pressing plate is fixed on the outer side of the demolding plate.

[0013] A die-casting mold for a gearbox housing proposed by the present utility model has the beneficial effects that: by means of the connecting rod and the clamping block, the two lower templates can be fixed on the top of the mounting seat and spliced into a complete lower template, so that the whole mold can be opened for convenient cleaning and maintenance, the blockage of the cooling pipeline can be avoided, resulting in the abnormal demolding of the gearbox housing, and the pressing plates on both sides can lift the demolding plate, facilitating the demolding of the gearbox housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural diagram of the present utility model;

[0015] Figure 2 is a partial three-dimensional structural diagram of the present utility model Figure 1 ;

[0016] Figure 3 is a partial three-dimensional structural diagram of the present utility model Figure 2 ;

[0017] Figure 4 is the present utility model Figure 2 is a partial enlarged view of part A in

[0018] In the figure: 1. upper die fixing plate; 2. lower die fixing plate; 3. upper template; 4. mounting seat; 5. lower template; 6. molding cavity; 7. connecting mechanism; 71. groove; 72. connecting rod; 73. stud; 74. clamping block; 75. T-shaped groove; 8. demolding mechanism; 81. vertical rod; 82. top plate; 83. connecting plate; 9. fastener; 91. threaded sleeve; 92. knob; 10. limiting circular plate; 11. fitting groove; 12. through groove; 13. demolding plate; 14. pressing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Referring to Figures 1-4 , a die-casting mold for a transmission housing, includes an upper die fixing plate 1 and a lower die fixing plate 2. The upper die fixing plate 1 and the lower die fixing plate 2 are connected by guide rods, which can play a guiding role during die-casting. A upper template 3 is fixed to the bottom of the upper die fixing plate 1. An installation seat 4 is fixed to the top of the lower die fixing plate 2, and symmetric lower templates 5 are movably connected to both sides of the top of the installation seat 4. A forming cavity 6 is formed at the connection of the two lower templates 5. A connection mechanism 7 is provided between the lower template 5 and the lower die fixing plate 2, and a demolding mechanism 8 is provided between the lower template 5 and the lower die fixing plate 2; this die-casting mold can fix the two lower templates 5 to the top of the installation seat 4 through the connecting rod 72 and the clamping block 74, and assemble them into a complete lower template 5, which can open the entire mold for convenient cleaning and maintenance. And the pressing plates 14 on both sides can lift the demolding plate 13 to facilitate demolding.

[0021] In this embodiment, the connection mechanism 7 includes a plurality of grooves 71 opened on both sides of the installation seat 4 and a connecting rod 72 hinged to the inner side of the groove 71. The other end of the connecting rod 72 is fixed with a stud 73, and a trapezoidal clamping block 74 and a fastener 9 are respectively arranged on the surface of the stud 73. The clamping block 74 is slidably connected to the stud 73. T-shaped grooves 75 are opened on both sides of the lower template 5, and the clamping block 74 abuts against the T-shaped grooves 75. The connecting rod 72 can be rotated to the position of the T-shaped groove 75 and installed through the fastener 9 and the clamping block 74.

[0022] Further, the fastener 9 includes a threaded sleeve 91, the threaded sleeve 91 is threadedly connected to the surface of the stud 73, and a knob 92 is fixed to both sides of the threaded sleeve 91. The knob 92 can drive the threaded sleeve 91 to rotate on the stud 73, and the threaded sleeve 91 can abut against the clamping block 74 to move downward for clamping.

[0023] Furthermore, a limiting circular plate 10 is fixed to the top of the stud 73, and a fitting groove 11 is opened on the surface of the T-shaped groove 75, and the fitting groove 11 is movably connected to the clamping block 74. The fitting groove 11 can limit the clamping block 74 to prevent it from sliding and loosening.

[0024] In addition, the demolding mechanism 8 includes a vertical rod 81, the vertical rod 81 is movably connected to the joint of the two lower templates 5, a top plate 82 is fixed to the top of the vertical rod 81 and the top plate 82 is embedded in the inner side of the molding cavity 6, a connecting plate 83 is fixed to the bottom of the vertical rod 81, and the vertical rod 81 and the top plate 82 can eject the workpiece to perform demolding.

[0025] It should be noted that a through groove 12 is formed in the top of the mounting seat 4, a demolding plate 13 is rotatably connected to the inner side of the through groove 12 through a torsion spring, the demolding plate 13 abuts against the connecting plate 83, and a pressing plate 14 is fixed to the outer side of the demolding plate 13. The pressing plate 14 and the demolding plate 13 are combined to form a Z-shaped plate, and the connecting plate 83 can be lifted upward by the lever principle for demolding.

[0026] Working mode: When die-casting the gearbox housing, inject the molding material into the molding cavity 6 for die-casting. When the mold needs to be cleaned and maintained, the staff only needs to unscrew the threaded sleeve 91. After the threaded sleeve 91 is unscrewed, the clamping block 74 can be removed from the fitting groove 11. Then, the connecting rod 72 is rotated out of the groove 71 and the T-shaped groove 75. Then, the two lower templates 5 are opened to clean and maintain each component. After that, the staff reinstalls them. When performing demolding, the staff only needs to hold down the pressing plate 14 and press it downward. Then, the pressing plate 14 can lift the demolding plate 13 upward through the lever. The demolding plate 13 will squeeze the connecting plate 83 and the vertical rod 81 upward, and finally the vertical rod 81 drives the top plate 82 to assist in demolding.

[0027] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A die-casting mold for a transmission housing, comprising an upper die fixing plate (1) and a lower die fixing plate (2), characterized in that: The bottom of the upper die fixing plate (1) is fixed with an upper template (3). The top of the lower die fixing plate (2) is fixed with a mounting seat (4), and both sides of the top of the mounting seat (4) are movably connected with symmetric lower templates (5). A forming cavity (6) is formed at the connection of the two lower templates (5). A connecting mechanism (7) is arranged between the lower template (5) and the lower die fixing plate (2), and a demoulding mechanism (8) is arranged between the lower template (5) and the lower die fixing plate (2).

2. The die-casting mold for a transmission housing according to claim 1, wherein: The connecting mechanism (7) includes a plurality of grooves (71) formed on both sides of the mounting seat (4) and connecting rods (72) hinged to the inner sides of the grooves (71). The other end of the connecting rod (72) is fixed with a stud (73). A clamping block (74) and a fastener (9) are respectively arranged on the surface of the stud (73). T-shaped grooves (75) are formed on both sides of the lower template (5), and the clamping block (74) abuts against the T-shaped grooves (75).

3. A die-casting mold for a gearbox housing according to claim 2, characterized in that: The fastener (9) includes a threaded sleeve (91) which is threadedly connected to the surface of the stud (73). Knobs (92) are fixed on both sides of the threaded sleeve (91).

4. A die-casting mold for a transmission housing according to claim 2, characterized in that: A limiting circular plate (10) is fixed to the top of the stud (73). A fitting groove (11) is formed on the surface of the T-shaped groove (75), and the fitting groove (11) is movably connected with the clamping block (74).

5. A die-casting mold for a transmission housing according to claim 1, characterized in that: The demoulding mechanism (8) includes a vertical rod (81) which is movably connected to the connection of the two lower templates (5). A top plate (82) is fixed to the top of the vertical rod (81), and the top plate (82) is embedded inside the forming cavity (6). A connecting plate (83) is fixed to the bottom of the vertical rod (81).

6. The die-casting mold for a transmission housing according to claim 5, wherein: A through groove (12) is formed on the top of the mounting seat (4). A demoulding plate (13) is rotatably connected to the inside of the through groove (12) through a torsion spring. The demoulding plate (13) abuts against the connecting plate (83), and a pressing plate (14) is fixed to the outside of the demoulding plate (13).

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