CN219233920U - Automobile-used natural gas relief pressure valve die casting die - Google Patents

Abstract

The utility model discloses a die casting die for a natural gas reducing valve for a vehicle, which comprises a bottom plate, a lower die table, an upper die base, a cylinder and a molded casting ejection structure, wherein the bottom plate can be fixed on a frame, the lower die table is arranged on the bottom plate, and a back plate is vertically fixed on the rear side of the bottom plate; the inner side of the lower die table is provided with a cavity, and the lower die table is provided with two die grooves; the two groups of cylinders are fixed on the back plate through angle irons, the shaft ends of the two groups of cylinders are connected with upper die holders, the upper die holders are matched with the die grooves to form a die casting die cavity, and the upper die holders can be close to and far away from the die grooves of the lower die table; the cavity is internally provided with a molded casting ejection structure which extends into the bottom side of the die cavity and can eject the molded valve casing in the die cavity. The utility model can avoid damage to the product caused by directly ejecting the ejector rod when separating the product from the die cavity by uniformly stressing the stripper plate, and further improves the qualification rate of the product taken out by the way.

Description

Die-casting mold for a natural gas pressure reducing valve for vehicles

technical field

The utility model relates to the field of manufacturing a natural gas pressure reducing valve, in particular to a die-casting mold for a natural gas pressure reducing valve for vehicles.

Background technique

In recent years, as a gaseous fuel, compressed natural gas has sufficient combustion, low emission of harmful substances, and meets environmental protection requirements. It is an ideal fuel for new energy vehicles. Natural gas is generally stored in storage tanks as liquid LNG or gaseous CNG. When stored in a CNG cylinder, the pressure inside the cylinder is generally 20MPa. When in use, it is necessary to use a pressure reducing valve between the cylinder and the terminal to decompress the natural gas in the cylinder. The pressure reducing valve is a thin-walled structural part, usually made of aluminum alloy and produced by die-casting process.

There are following defects in the die-casting process of the pressure reducing valve in the prior art:

Generally, the ejector pin is used to eject the product directly when the die-casting mold is demolded. However, since the pressure reducing valve product of the thin-walled structural part is relatively fragile when it is just formed, the ejector pin is directly used to eject the product. Sometimes it is easy for the product to be damaged by ejection, that is, the uneven force during the ejection process leads to damage to the product, which virtually increases the defective rate of the product.

Utility model content

The purpose of this utility model is to provide a die-casting mold for a natural gas pressure reducing valve for a vehicle to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a die-casting mold for a natural gas pressure reducing valve for a vehicle, including a bottom plate, a lower mold table, an upper mold seat, a cylinder and a molded casting ejection structure, the bottom plate can be fixed on the machine On the frame, a lower mold platform is installed on the bottom plate, and a back plate is vertically fixed on the rear side of the bottom plate; a cavity is provided inside the lower mold platform, and two mold grooves are arranged on the lower mold platform; The angle iron is fixed on the back plate, and the shaft ends of the two groups of cylinders are connected with an upper mold base, which cooperates with the mold groove to form a die-casting mold cavity, and the upper mold base can be close to and far away from the mold groove of the lower mold table; The cavity is equipped with a molded casting ejection structure that extends into the bottom side of the mold groove and can eject the molded valve housing in the mold groove. The molded casting ejection structure includes a biaxial motor, screw, screw sleeve, wedge block, main rod, The sliding plate and the demoulding assembly, wherein the two shaft ends of the biaxial motor are respectively connected to the screw rods, and the ends of the two screw rods are connected to the side wall of the cavity in rotation.

Preferably, two screw rods are fitted with screw sleeves, the bottom side of the screw sleeves is in sliding contact with the bottom wall of the cavity, and wedge-shaped blocks are provided on the screw sleeves.

Preferably, a channel is provided at the inner upper end of the lower mold table, and a guide rail is embedded in the inner wall of the channel, and the slide plate can slide with the guide rail.

Preferably, the demoulding assembly includes a demoulding rod and a stripping plate, wherein the stripping plate is arranged on the bottom side of the mold cavity.

Preferably, the top of the lower mold table is provided with several perforations, and the demoulding rods are provided with several and the lower ends are connected to the slide plate, and the upper ends pass through the perforations and are connected to the stripping plate, and the stripping rods are covered with springs.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model adopts the cooperation of the screw rod and the screw sleeve, uses the screw rod to drive the screw sleeve to move, and makes the screw sleeve drive the wedge-shaped block, so that the end surface of the wedge-shaped block initially contacts and presses the bottom end of the main rod, so that the main rod can be slightly Eject upwards, and use the demoulding assembly composed of the stripping plate and multiple stripping rods to gradually eject the product. Since the contact force of the multiple stripping rods is greater, and the force on the stripping plate is uniform, the product can be separated from the mold. Avoiding damage to the product due to direct ejection by the ejector pin when opening the cavity. In this way, the qualified rate of product removal is further improved.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is a schematic plan view of the utility model.

In the figure: 1, bottom plate; 2, lower mold platform; 201, mold groove; 3, upper mold base; 4, cylinder; 5, biaxial motor; 6, screw rod; 7, screw sleeve; 8, wedge block; 9 1, the main rod; 10, the slide plate; 11, the guide rail; 12, the demoulding rod; 13, the stripping plate.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower" and "horizontal" are based on the orientation or positional relationship shown in the accompanying drawings, only It is for the convenience of describing the utility model and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model.

In the description of the present utility model, it should also be noted that, unless otherwise specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection , can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

Please refer to Figure 1-2, the utility model provides a technical solution: a die-casting mold for a natural gas pressure reducing valve for a vehicle, including a bottom plate 1, a lower mold table 2, an upper mold base 3, a cylinder 4 and a molded casting ejection structure, The base plate 1 can be fixed on the frame, the base plate 1 is equipped with a lower mold platform 2, and a back plate is vertically fixed on the rear side of the base plate 1; the inner side of the lower mold platform 2 is provided with a cavity, and the lower mold platform 2 is provided with two Die cavity 201; said cylinder 4 is provided with two groups and it is fixed on the backboard by angle iron, two groups of cylinders 4 axle ends are connected with upper mold base 3, upper mold base 3 cooperates with mold groove 201 and forms a die-casting mold Cavity, the upper mold base 3 can approach and move away from the mold cavity 201 of the lower mold table 2; the cavity is equipped with a molded casting that extends into the bottom side of the mold cavity 201 and can eject the molded valve housing in the mold cavity 201. Structure, the molded casting ejection structure includes a biaxial motor 5, a screw 6, a screw sleeve 7, a wedge block 8, a main rod 9, a slide plate 10 and a demoulding assembly, wherein the two shaft ends of the biaxial motor 5 are respectively connected to the screw 6, The ends of the two screw rods 6 are rotatably connected to the side wall of the cavity.

In this embodiment, the two screw rods 6 are fitted with screw sleeves 7 , the bottom side of the screw sleeves 7 is in sliding contact with the bottom wall of the cavity, and a wedge-shaped block 8 is provided on the screw sleeves 7 .

In this embodiment, a channel is provided at the inner upper end of the lower mold table 2, and a guide rail 11 is embedded in the inner wall of the channel, and the slide plate 10 can slide with the guide rail 11. There are rollers in contact with wedge block 8 end faces.

In this embodiment, the demoulding assembly includes a demoulding rod 12 and a stripping plate 13 , wherein the stripping plate 13 is disposed on the bottom side of the mold cavity 201 .

In this embodiment, the top of the lower mold table 2 is provided with a number of perforations, and the demoulding rod 12 is provided with several pieces and its lower end is connected to the slide plate 10, and its upper end passes through the perforation and is connected to the stripping plate 13, and the demoulding rod 12 is covered with a spring. .

In this embodiment, the above-mentioned cooperation of the screw rod 6 and the screw sleeve 7 is adopted, the screw rod 6 is used to drive the screw sleeve 7 to move, and the screw sleeve 7 is driven to drive the wedge-shaped block 8, so that the end surface of the wedge-shaped block 8 is initially aligned with the bottom end of the main rod 9 Contact and press, so that the main rod 9 can be ejected upwards in a small range, and the product is gradually ejected by using the demoulding assembly composed of the stripping plate 13 and a plurality of stripping rods 12, because the contact force of the multiple stripping rods 12 is stronger Large, and at the same time, the force on the stripping plate 13 can be uniform, which can avoid the direct use of the ejector pin to directly eject the product and cause product damage when separating the product and the mold cavity. In this way, the qualified rate of product removal is further improved.

It is worth noting that the whole device is controlled by the main control button. Since the equipment matched with the control button is a common equipment and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described here.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (5)

1. The die-casting die for the natural gas reducing valve for the vehicle is characterized by comprising a bottom plate (1), a lower die table (2), an upper die holder (3), an air cylinder (4) and a formed casting ejection structure, wherein the bottom plate (1) can be fixed on a frame, the lower die table (2) is arranged on the bottom plate (1), and a back plate is vertically fixed on the rear side of the bottom plate (1); a cavity is formed in the inner side of the lower die table (2), and two die grooves (201) are formed in the lower die table (2); the two groups of air cylinders (4) are arranged and fixed on the back plate through angle irons, the shaft ends of the two groups of air cylinders (4) are connected with an upper die holder (3), the upper die holder (3) is matched with the die cavity (201) and forms a die casting die cavity, and the upper die holder (3) can be close to and far away from the die cavity (201) of the lower die table (2); the cavity is internally provided with a molded casting ejection structure which extends into the bottom side of the die cavity (201) and can eject a molded valve casing in the die cavity (201), the molded casting ejection structure comprises a double-shaft motor (5), a screw rod (6), a threaded sleeve (7), a wedge-shaped block (8), a main rod (9), a sliding plate (10) and a demolding assembly, wherein two shaft ends of the double-shaft motor (5) are respectively connected with the screw rod (6), and the tail ends of the two screw rods (6) are rotatably connected to the side wall of the cavity.

2. The die casting die for the natural gas reducing valve for the vehicle according to claim 1, wherein: the screw rods (6) are sleeved with screw sleeves (7), the bottom sides of the screw sleeves (7) are in sliding connection with the bottom wall of the cavity, and wedge-shaped blocks (8) are arranged on the screw sleeves (7).

3. The die casting die for the natural gas reducing valve for the vehicle according to claim 1, wherein: the upper end of the inner side of the lower die table (2) is also provided with a channel, a guide rail (11) is embedded in the inner wall of the channel, a sliding plate (10) can be in sliding connection with the guide rail (11), the lower end of the sliding plate (10) is connected with a main rod (9), and the bottom end of the main rod (9) is provided with a roller which is in contact with the end face of the wedge-shaped block (8).

4. The die casting die for the natural gas reducing valve for the vehicle according to claim 1, wherein: the demolding assembly comprises a demolding rod (12) and a demolding plate (13), wherein the demolding plate (13) is arranged on the bottom side of the mold groove (201).

5. The die casting die for the natural gas reducing valve for the vehicle according to claim 1, wherein: the top end of the lower die table (2) is provided with a plurality of perforations, the demoulding rod (12) is provided with a plurality of demoulding rods, the lower ends of the demoulding rods are connected with the sliding plate (10), the upper ends of the demoulding rods penetrate through the perforations and are connected with the demoulding plate (13), and the demoulding rods (12) are sleeved with springs.

Images