CN210121670U

CN210121670U - Automobile gearbox mould

Info

Publication number: CN210121670U
Application number: CN201920502573.2U
Authority: CN
Inventors: 何敏
Original assignee: Suzhou Union Precision Metal Products Co Ltd
Current assignee: Suzhou Union Precision Metal Products Co Ltd
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2020-03-03
Anticipated expiration: 2029-04-15

Abstract

A kind of car gear box mould, including setting up the die core in one side of the middle part of the bottom plate of the stationary mould, set up in moving die core, thimble board, side bottom hole shaping slide block and mould foot in the middle part of the moving die bottom plate, said stationary mould core and another side of moving die core also have castellated air exhaust block, castellated air exhaust block connect die-casting space; the side bottom hole forming sliding block is arranged between the side face of the die-casting space, the fixed die bottom plate and the movable die bottom plate, the side bottom hole forming sliding block stretches out a section of bottom hole forming block to the die-casting space, and the distance of the forming block stretching into the die-casting space is adjustable. The utility model is provided with the tooth-shaped exhaust block at the other side of the fixed die core and the movable die core, and the tooth-shaped exhaust block is communicated with the die casting space to ensure the stable gas exhaust; the fixed die bottom plate and the movable die bottom plate are connected together through a guide mechanism formed by matching the guide pillars with the guide sleeves, so that the stability of the movable die bottom plate and the fixed die bottom plate in the machining process can be ensured, and the separation of the two bottom plates is not influenced.

Description

Automobile gearbox mould

Technical Field

The utility model belongs to the technical field of the die casting die and specifically relates to a motor transmission mould.

Background

The die-casting die is an important process device for producing various industrial products, and with the rapid development of the design industry of the die-casting die and the popularization and application of precision parts in the industrial departments of aviation, aerospace, electronics, machinery, ships, automobiles and the like, the requirements of products on the die are higher and higher, and the traditional die-casting die design method cannot meet the requirements of product updating and quality improvement.

Disclosure of Invention

The utility model aims to solve the above problem, provide a motor transmission mould specifically realizes by following technical scheme:

a mold for an automobile transmission comprises a fixed mold core arranged on one side of the middle part of a fixed mold base plate, a movable mold core arranged in the middle part of a movable mold base plate, an ejector pin plate, a side bottom hole forming slide block and a mold foot, wherein the movable mold base plate is fixedly connected with the mold foot and forms a movable space between the movable mold base plate and the mold foot, and the ejector pin plate is positioned in the movable space; the fixed die base plate is opposite to the movable die base plate, so that the fixed die core is opposite to the movable die core, a die-casting space is formed between the fixed die core and the movable die core, and a shunting cone positioned between the fixed die base plate and the movable die base plate is arranged on one side of the fixed die core and one side of the movable die core; a material cylinder is arranged on one side of the top of the fixed die base plate, the material cylinder is connected with a bushing downwards, the bushing penetrates through the fixed die base plate downwards, the bushing is provided with a main runner, the main runner is communicated with the spreader cones through two branch runners, the spreader cones are communicated with a die-casting space, tooth-shaped exhaust blocks are further arranged on the other sides of the fixed die core and the movable die core, and the tooth-shaped exhaust blocks are communicated with the die-casting space; the die-casting die further comprises a pouring gate, the pouring gate is arranged on the upper surface of the material cylinder, the pouring thickness of the pouring gate is more than or equal to 3.5mm, a triangular notch is formed in the outer surface of the pouring gate, a position close to the pouring gate in the die is a product increasing and feeding channel, the feeding channel is a multi-stage variable-volume channel, the cross-sectional area of the variable-volume channel gradually increases from outside to inside, and meanwhile, an internal extraction conversion structure is arranged in the die-casting space to help demoulding; the bottom hole forming block is a small sliding block, two circulating cooling water channels are arranged in the small sliding block, a channel is formed in the small sliding block and used for accommodating the water channels, the two circulating cooling water channels are converged inwards from two ends of the small sliding block to the middle of the small sliding block, and a water outlet is formed in the middle of the small sliding block; the tooth-shaped exhaust block of the die casting space and each exhaust pipeline in the die casting space are connected with a vacuum exhaust structure, and negative pressure is formed at a filling part produced by the die.

Preferably, the inner parts of the fixed mold core and the movable mold core are respectively provided with a water cooling channel for containing cooling water.

Preferably, the branch flow channels are cross-shaped and symmetrically arranged on two sides of the main flow channel.

Preferably, the fixed die bottom plate and the movable die bottom plate are connected together through a guide mechanism formed by matching of a guide pillar and a guide sleeve.

The utility model is provided with the diffluence cone on the side of the movable mould core and the fixed mould core, the diffluence cone is connected with the die casting space, when in processing, the diffluence cone enters the diffluence cone after being shunted from the main runner to the branch runner, the diffluence cone can improve the trend of the metal liquid, the forming of the casting in the die casting space can be controlled in real time, and the generation of air holes in the die casting process can be reduced, the other side of the fixed mould core and the movable mould core is also provided with the tooth-shaped exhaust block which is communicated with the die casting space, in the process of folding the fixed mould core and the movable mould core, the gas can be discharged from the diffluence cone, if the gas is discharged in time, a plurality of air holes in the die casting can be caused, the exhaust is not too fast, the exhaust is easy to generate adverse effect on the forming of the die casting, the tooth-shaped exhaust block of the die casting space and each, compared with the traditional natural exhaust method, the vacuum exhaust structure adopted by the utility model forms negative pressure in the die-casting space to extract redundant gas, and only fills the space and does not discharge gas in addition when the aluminum liquid enters the die-casting space, so that the product does not generate air holes any more; the die casting die also comprises a side bottom hole forming slider arranged on the side of the die casting space and between the fixed die bottom plate and the movable die bottom plate, wherein the side bottom hole forming slider extends out of a section of bottom hole forming block into the die casting space, and the distance of the forming block extending into the die casting space is adjustable, so that one process is saved for processing the bottom hole on the side of the product, the forming block can be adjusted to more conveniently process bottom holes with different specifications, and the problem that the extending feet of the product are easy to deform in the production process of the product is solved; the utility model also comprises a pouring gate, the pouring gate is arranged on the upper surface of the material cylinder, the pouring gate is controlled to be more than or equal to 3.5mm in thickness, the present high-speed die casting production is more and more considered, the pouring gate is controlled to be more than or equal to 3.5mm in thickness, which is enough to meet the requirement of high-speed die casting, the outer surface of the pouring gate is provided with a triangular notch, which is more convenient for the pouring gate to be removed after the die casting is finished, the triangular notch is arranged on the outer surface of the pouring gate when the pouring gate is removed, thus the force on the surface of the pouring gate is unbalanced, the force on the pouring gate can be concentrated on the triangular notch, the triangular shape can better destroy the contact surface between the notch and the pouring gate, the pouring gate can be removed more efficiently, in the process of producing products, the far end of the pouring gate can substitute a large amount of air and lead to, thereby lead to the product defective rate to improve, in order to solve this gas pocket problem, the utility model discloses a position that the mould is inside to be close to the runner increases the feeding passageway for the product, this feeding passageway is multistage varactor passageway, from outside-in feeding passageway's cross-sectional area grow gradually, the feeding has a process of adaptation step by step like this, can not bring in a large amount of air because the passageway aperture increases suddenly and the feed liquid can't adapt to the change of volume when feeding, thereby solve the gas pocket problem, such structure can lead to the drawing of patterns difficulty simultaneously, the utility model discloses be equipped with inside in the die-casting space and take out conversion structure to help the drawing of patterns; the bottom hole shaping piece specifically is a little slider, and the inside of this little slider is equipped with two circulative cooling water courses, and inside the opening of little slider has the channel to be used for holding above-mentioned water course, and above-mentioned two circulative cooling water courses converge in the middle part of little slider from the both ends of little slider inwards, and little slider middle part is equipped with the delivery port, compares in traditional mould and sets up the circulation water route in the slider outside, the utility model discloses at the inside little circulation water course that sets up of mould slider, saved the space in the mould on the one hand, the inside refrigerated efficiency of on the other hand slider is higher, and the water course is established and can fully absorb the heat in the slider inside, always has some energy to lose when establishing the outside, and this novel water course is located to converge in the middle of the slider for the cooling efficiency on both sides is.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of the present invention.

In the figure: 1. a fixed die bottom plate; 2. fixing a mold core; 3. a movable mold base plate; 4. a movable mould core; 5. an ejector plate; 6. a mould leg; 7. a die casting space; 8. a spreader cone; 9. a material cylinder; 10. a toothed exhaust block; 11. a gate; 12. forming a sliding block through a side bottom hole; 13. a bottom hole forming block; 14. and a vacuum exhaust structure.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be understood that the terms "mounted," "connected," and "connected" are used in a broad sense and can be, for example, mechanically or electrically connected, or can be connected by two elements through internal communication, either directly or indirectly via an intermediate medium. The specific meaning of the above terms can be understood by those of ordinary skill in the art as appropriate.

The following describes an automobile transmission mold according to an embodiment of the present invention with reference to fig. 1 to 2, including a fixed mold core 2 disposed on one side of the middle of a fixed mold base plate 1, a movable mold core 4 disposed in the middle of a movable mold base plate 3, an ejector plate 5, a side bottom hole forming slider 12 and a mold foot 6, wherein the movable mold base plate 3 is fixedly connected with the mold foot 6 and forms a movable space therebetween, and the ejector plate 5 is located in the movable space; the fixed die base plate 1 is opposite to the movable die base plate 3, so that the fixed die core 2 is opposite to the movable die core 4, a die-casting space 7 is formed between the fixed die core 2 and the movable die core 4, and a shunting cone 8 positioned between the fixed die base plate 1 and the movable die base plate 3 is arranged on one side of the fixed die core 2 and one side of the movable die core 4; a material cylinder 9 is arranged on one side of the top of the fixed die base plate 1, the material cylinder 9 is connected with a bushing downwards, the bushing penetrates through the fixed die base plate 1 downwards, the bushing is provided with a main runner, the main runner is communicated with the sprue spreader 8 through two branch runners, the sprue spreader 8 is communicated with a die-casting space 7, a tooth-shaped exhaust block 10 is further arranged on the other side of the fixed die core 2 and the movable die core 4, and the tooth-shaped exhaust block 10 is communicated with the die-casting space 7; the side bottom hole forming slide block 12 is arranged on the side surface of the die-casting space 7 and between the fixed die base plate 1 and the movable die base plate 3, the side bottom hole forming slide block 12 extends into the die-casting space 7 for a section to form a bottom hole forming block 13, the distance of the forming block 13 extending into the die-casting space 7 is adjustable, a reinforcing rib is arranged between two legs of the fixed die core 2 close to a product, the die-casting die further comprises a pouring gate 11, the pouring gate 11 is arranged on the upper surface of the material cylinder 9, the pouring thickness of the pouring gate 11 is more than or equal to 3.5mm, a triangular notch is arranged on the outer surface of the pouring gate 11, a position close to the pouring gate in the die is a product feeding channel, the feeding channel is a multistage variable-volume channel, the cross-sectional area of the feeding channel is gradually increased from the outside to the inside; the bottom hole forming block 13 is a small sliding block, two circulating cooling water channels are arranged in the small sliding block, a channel is formed in the small sliding block to accommodate the water channels, the two circulating cooling water channels are converged inwards from two ends of the small sliding block to the middle of the small sliding block, and a water outlet is formed in the middle of the small sliding block; the tooth-shaped exhaust block 10 of the die casting space 7 and each exhaust pipeline inside the die casting space 7 are connected with a vacuum exhaust structure 14, and negative pressure is formed at the filling part of the die production.

Preferably, the inner parts of the fixed die core 2 and the movable die core 4 are respectively provided with a water cooling channel for containing cooling water.

Preferably, the fixed die bottom plate 1 and the movable die bottom plate 3 are connected together through a guide mechanism formed by matching a guide pillar and a guide sleeve.

In the description herein, references to the description of "one embodiment," "an example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The automobile gearbox die is characterized by comprising a fixed die core arranged on one side of the middle part of a fixed die base plate, a movable die core arranged in the middle part of a movable die base plate, an ejector pin plate, a side surface bottom hole forming sliding block and a die pin, wherein the movable die base plate is fixedly connected with the die pin and a movable space is formed between the movable die base plate and the die pin, and the ejector pin plate is positioned in the movable space; the fixed die base plate is opposite to the movable die base plate, so that the fixed die core is opposite to the movable die core, a die-casting space is formed between the fixed die core and the movable die core, and a shunting cone positioned between the fixed die base plate and the movable die base plate is arranged on one side of the fixed die core and one side of the movable die core; a material cylinder is arranged on one side of the top of the fixed die base plate, the material cylinder is connected with a bushing downwards, the bushing penetrates through the fixed die base plate downwards, the bushing is provided with a main runner, the main runner is communicated with the spreader cones through two branch runners, the spreader cones are communicated with a die-casting space, tooth-shaped exhaust blocks are further arranged on the other sides of the fixed die core and the movable die core, and the tooth-shaped exhaust blocks are communicated with the die-casting space; the die-casting die further comprises a pouring gate, the pouring gate is arranged on the upper surface of the material cylinder, the pouring thickness of the pouring gate is more than or equal to 3.5mm, a triangular notch is formed in the outer surface of the pouring gate, a position close to the pouring gate in the die is a product increasing and feeding channel, the feeding channel is a multi-stage variable-volume channel, the cross-sectional area of the variable-volume channel gradually increases from outside to inside, and meanwhile, an internal extraction conversion structure is arranged in the die-casting space to help demoulding; the bottom hole forming block is a small sliding block, two circulating cooling water channels are arranged in the small sliding block, a channel is formed in the small sliding block and used for accommodating the water channels, the two circulating cooling water channels are converged inwards from two ends of the small sliding block to the middle of the small sliding block, and a water outlet is formed in the middle of the small sliding block; the tooth-shaped exhaust block of the die casting space and each exhaust pipeline in the die casting space are connected with a vacuum exhaust structure, and negative pressure is formed at a filling part produced by the die.

2. The mold according to claim 1, wherein the cavity insert and the core insert are provided with water cooling channels for containing cooling water therein, respectively.

3. The mold according to claim 2, wherein the branch runners are cross-shaped and symmetrically arranged on both sides of the main runner.

4. The mold according to claim 1, wherein the fixed mold bottom plate and the movable mold bottom plate are connected together through a guide mechanism formed by matching guide posts and guide sleeves.