CN214948177U - Piston nitrogen cylinder and die casting machine - Google Patents

Abstract

The utility model discloses a piston nitrogen cylinder and a die casting machine, wherein the piston nitrogen cylinder comprises a cylinder barrel, a cylinder cover and a sealing component, and the cylinder cover is arranged at the opening of the cylinder barrel; sealing assembly installs between cylinder and cylinder cap, and sealing assembly includes that first sealing washer and cover locate the second sealing washer of the periphery wall of first sealing washer, and the periphery wall of first sealing washer has first inclined plane, and the second sealing washer has the second inclined plane, and first inclined plane is laminated with the second inclined plane mutually, and first sealing washer embeds there is metal framework. In use, the wearing and tearing speed of second sealing washer is faster than first sealing washer, and after the second sealing washer wearing and tearing reached the certain degree, only need change the second sealing washer, need not to scrap whole seal assembly, only establishes a sealing washer in other words, and function partition has been realized to this application, has reduced cost of maintenance. Meanwhile, the abrasion resistance requirement of the material of the first sealing ring can be lower than that of the second sealing ring, and the production cost is saved. The first sealing ring is provided with a metal framework, so that the sealing effect is improved.

Description

Piston nitrogen cylinder and die casting machine

Technical Field

The utility model relates to a die casting machine technical field particularly, relates to a piston nitrogen cylinder and die casting machine.

Background

The upper cylinder cover and the cylinder barrel of the nitrogen cylinder of some existing hydraulic die-casting machines are in threaded connection, the upper cylinder cover is provided with a mounting groove, and a rubber sealing ring is mounted in the mounting groove to seal a gap between the upper cylinder cover and the cylinder barrel, but the rubber sealing ring is easy to wear, the function is not divided, the whole sealing ring is easy to scrap, the designed pressure value is small, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a piston nitrogen cylinder can have higher design pressure value.

The utility model discloses still provide a die casting machine with above-mentioned piston nitrogen cylinder.

According to the piston nitrogen cylinder of the embodiment of the first aspect of the present invention, the piston nitrogen cylinder includes a cylinder barrel, a cylinder cover and a seal assembly, the cylinder barrel has an opening; the cylinder cover is arranged at the opening; sealing assembly install in the cylinder with between the cylinder cap, sealing assembly includes that first sealing washer and cover are located the second sealing washer of the periphery wall of first sealing washer, the periphery wall of first sealing washer has first inclined plane, the second sealing washer has the second inclined plane, first inclined plane with the laminating of second inclined plane mutually, first sealing washer embeds there is metal framework.

According to the utility model discloses piston nitrogen cylinder has following beneficial effect at least: this application is through setting up seal assembly, and second sealing washer cover is established and is laminated in the first inclined plane of first sealing washer, then in the use, the wearing and tearing speed of second sealing washer is faster than first sealing washer, after the second sealing washer wearing and tearing to a certain extent, only need use new second sealing washer to replace, need not to scrap whole seal assembly, be equivalent to prior art only sets up a sealing washer, this application realizes the functional partitioning, has reduced cost of maintenance. Meanwhile, the abrasion resistance requirement of the material of the first sealing ring can be lower than that of the second sealing ring, and the production cost is saved. First sealing washer has metal framework, improves sealed effect to can improve the design pressure value of piston nitrogen cylinder.

According to some embodiments of the invention, the cross-sectional structure of the second sealing ring is a right triangle.

According to some embodiments of the present invention, the first seal ring has an i-shaped cross-section.

According to some embodiments of the present invention, the second sealing ring is bonded to the first sealing ring.

According to some embodiments of the invention, the first sealing ring has a trapezoidal portion at an end portion remote from the second sealing ring, a lower base of the trapezoidal portion being adjacent to the second sealing ring.

According to some embodiments of the invention, a cavity is provided in the trapezoidal portion.

According to some embodiments of the utility model, the cylinder with cylinder cap threaded connection.

According to the utility model discloses a some embodiments, the mounting groove has been seted up to the cylinder cap, seal assembly install in the mounting groove.

According to some embodiments of the utility model, the cylinder cap is upper cylinder cap and/or lower cylinder cap.

According to the utility model discloses a die casting machine of second aspect embodiment, include the utility model discloses the piston nitrogen cylinder of any embodiment of above-mentioned first aspect.

According to the utility model discloses die casting machine has following beneficial effect at least: through adopting foretell piston nitrogen cylinder, reduced cost of maintenance, sealed effectual, the design pressure value of piston nitrogen cylinder is big.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic perspective view of a piston nitrogen cylinder provided in an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the piston nitrogen cylinder shown in FIG. 1;

FIG. 3 is a partial schematic view at A in FIG. 2;

fig. 4 is a partial schematic view at B in fig. 3.

Reference numerals:

a piston nitrogen cylinder 10;

a cylinder barrel 100;

cylinder head 200, valve 210, annular groove 220;

the sealing assembly 300, a first sealing ring 310, a trapezoidal part 311, a cavity 312, a second sealing ring 320 and a metal framework 330;

a piston 400.

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, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and 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 thus, should not be construed as limiting the present invention.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1 to 4, in the piston nitrogen cylinder 10 provided in the embodiment of the first aspect of the present invention, the piston nitrogen cylinder 10 includes a cylinder barrel 100, a cylinder cover 200, and a sealing assembly 300.

The cylinder tube 100 is a metal cylinder tube having an upper opening and a lower opening. Of course, the cylinder tube 100 may be a square cylinder, that is, the outer peripheral wall is a square body and the inner peripheral wall is a cylinder.

The cylinder cover 200 is disc-shaped and is installed at the opening of the corresponding cylinder barrel 100; the cylinder cover 200 is provided with a passage to realize the internal and external communication of the piston nitrogen cylinder 10. A valve 210 is installed on the upper cylinder head to control opening and closing of the passage of the upper cylinder head.

The sealing assembly 300 is located between the cylinder barrel 100 and the cylinder cover 200, and the cylinder cover 200 is provided with the annular groove 220, so that on the premise of ensuring the sealing performance, the structural strength of the cylinder barrel 100 can be ensured and the thickness of the cylinder barrel 100 is proper because the groove does not need to be formed on the cylinder barrel 100. The sealing assembly 300 is installed in the annular groove 220, the sealing assembly 300 comprises a first sealing ring 310 and a second sealing ring 320 sleeved on the outer peripheral wall of the first sealing ring 310, the outer peripheral wall of the first sealing ring 310 is provided with a first inclined surface, the second sealing ring 320 is provided with a second inclined surface, the first inclined surface is attached to the second inclined surface, and a metal framework 330 is arranged in the first sealing ring 310. It should be noted that the annular groove 220 may also be provided on the cylinder tube 100.

According to the utility model discloses piston nitrogen cylinder 10 has following beneficial effect at least: this application is through setting up seal assembly 300, and the 320 covers of second sealing washer establish and laminate in the first inclined plane of first sealing washer 310, then in the use, the wearing and tearing speed of second sealing washer 320 is faster than first sealing washer 310, wear and tear to a certain extent after second sealing washer 320, only need use new second sealing washer 320 to replace, first sealing washer 310 can continue to use, need not to scrap whole seal assembly 300, be equivalent to prior art only sets up a sealing washer, this application is through installing second sealing washer 320 in the easy wearing and tearing district, first sealing washer 310 plays support and positioning action to second sealing washer 320, realize the regional function subregion of sealing, and the maintenance cost is reduced. Meanwhile, the abrasion resistance requirement of the material of the first sealing ring 310 can be lower than that of the second sealing ring 320, for example, the first sealing ring 310 is made of polytetrafluoroethylene, and the second sealing ring 320 is made of polyurethane rubber, beryllium bronze, red copper or bronze, so that the whole sealing element is prevented from being made of a material with high abrasion resistance, and the production cost is saved. The first seal ring 310 has the metal skeleton 330, which improves the sealing effect, so that the design pressure value of the piston nitrogen cylinder 10 can be improved.

According to some embodiments of the present invention, referring to fig. 4, the cross-sectional structure of the second sealing ring 320 is a right triangle, and the triangle is configured to ensure that the wear cycle of the second sealing ring 320 reaches a preset value, thereby reducing the material cost.

According to some embodiments of the present invention, referring to fig. 4, the cross-sectional structure of the first sealing ring 310 is an i-shape, so as to prevent the sealing assembly 300 from falling off from the cylinder head 200 during transportation of the cylinder head 200 with the sealing assembly 300.

According to some embodiments of the utility model, second sealing washer 320 bonds with first sealing washer 310 mutually, bonds second sealing washer 320 with first sealing washer 310 mutually for second sealing washer 320 is difficult for dropping, is convenient for have the cylinder lid 200 of seal assembly 300 to install on cylinder 100, improves the installation effectiveness. Of course, the second sealing ring 320 and the first sealing ring 310 may be connected by a snap structure.

According to some embodiments of the present invention, referring to fig. 4, the first sealing ring 310 has a trapezoid portion 311 at the end portion far away from the second sealing ring 320, the lower base of the trapezoid portion 311 is adjacent to the second sealing ring 320, the end portion far away from the second sealing ring 320 is set to be a trapezoid structure with the first sealing ring 310, the lower base is abutted against the side wall of the mounting groove, which can ensure that the first sealing ring 310 is stably connected with the cylinder head 200, and can reduce the material cost of the first sealing ring 310. Of course, the end of the first sealing ring 310 away from the second sealing ring 320 may also be arranged in a triangular configuration.

According to some embodiments of the present invention, referring to fig. 4, the trapezoidal portion 311 is provided with a space 312, so that the trapezoidal portion 311 is easily deformed, thereby ensuring that the trapezoidal portion 311 can be deformed and then can be embedded into the corresponding mounting groove. Further, the cavity 312 has a trapezoidal structure, but the cavity 312 may have other shapes, such as a circular shape, and is not limited herein.

According to some embodiments of the utility model, see fig. 3, the cylinder 100 and the 200 threaded connection of cylinder cap, the second sealing washer 320 is changed in the later stage of being convenient for, improves connection stability between them, ensures that piston nitrogen cylinder 10 has high design pressure value.

According to some specific embodiments of the present invention, referring to fig. 2-4, the cylinder cover 200 is an upper cylinder cover and/or a lower cylinder cover, and the user can only install the sealing assembly 300 on the upper cylinder cover, can also only install the sealing assembly 300 on the lower cylinder cover, and can also install the sealing assembly 300 on the upper cylinder cover and the lower cylinder cover simultaneously according to the actual need, and of course, the sealing assembly 300 can also be installed on the piston 400, and no specific limitation is made herein.

According to the utility model discloses a die casting machine of second aspect embodiment, include the utility model discloses the piston nitrogen cylinder 10 of any embodiment of above-mentioned first aspect.

According to the utility model discloses die casting machine has following beneficial effect at least: by adopting the piston nitrogen cylinder 10, the maintenance cost is reduced, the sealing effect is good, and the design pressure value of the piston nitrogen cylinder 10 is large.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 present 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 (10)

1. A piston nitrogen cylinder, comprising:

a cylinder having an opening;

a cylinder head mounted to the opening;

sealing assembly, sealing assembly is located the cylinder with between the cylinder cap, sealing assembly includes that first sealing washer and cover are located the second sealing washer of the periphery wall of first sealing washer, the periphery wall of first sealing washer has first inclined plane, the second sealing washer has the second inclined plane, first inclined plane with the laminating of second inclined plane mutually, first sealing washer embeds there is metal framework.

2. The piston nitrogen cylinder of claim 1, wherein the cross-sectional structure of the second seal ring is a right triangle.

3. The piston nitrogen cylinder of claim 2, wherein the cross-sectional structure of the first seal ring is i-shaped.

4. The piston nitrogen cylinder of claim 3, wherein the second seal ring is bonded to the first seal ring.

5. The piston nitrogen cylinder of claim 3, wherein the first seal ring has a trapezoidal portion at an end remote from the second seal ring, a lower base edge of the trapezoidal portion being adjacent to the second seal ring.

6. The piston nitrogen cylinder of claim 5, wherein a cavity is formed within the trapezoidal section.

7. The piston nitrogen cylinder of claim 1, wherein the cylinder barrel is in threaded connection with the cylinder head.

8. The piston nitrogen cylinder as recited in any one of claims 1 to 7, wherein said cylinder cover is provided with an installation groove, and said seal assembly is installed in said installation groove.

9. The piston nitrogen cylinder of claim 8, wherein the cylinder cover is an upper cylinder cover and/or a lower cylinder cover.

10. A die casting machine comprising the piston nitrogen cylinder of any one of claims 1 to 9.

Images