CN214920350U - Injection cylinder and die casting machine - Google Patents

Abstract

The utility model discloses an injection jar and die casting machine, injection jar include piston rod and copper sheathing, and the copper sheathing is located outside the piston rod, two at least annular mounting grooves have been seted up along the axial to the internal perisporium of copper sheathing, install the sealing washer that has the turning in the mounting groove, the corner is equipped with first convex part, first convex part along the axial extension and the radial extension of sealing washer, so that the sealing washer with form first extrusion clearance between the bottom surface of mounting groove, the sealing washer with form second extrusion clearance between the side of mounting groove. Form first extrusion clearance and second extrusion clearance between sealing washer and the copper sheathing, when the sealing washer received the effect of external force, first convex part can warp and extrude the copper sheathing to two wall of mounting groove like this to form inseparable sealed face, through the deformation range of increase sealing washer, improve sealed effect. Meanwhile, at least two seals are arranged, and the sealing effect is further improved.

Description

Injection cylinder and die casting machine

Technical Field

The utility model relates to a die casting machine technical field particularly, relates to an injection jar and die casting machine that has this injection jar.

Background

In die casting machines, the shot sleeve is an important hydraulic component. The sealing performance between the front end cover and the piston rod of the existing injection cylinder is poor, the oil leakage condition often occurs, the working environment is polluted, and the mold locking force is reduced.

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 an injection jar can improve the leakproofness.

The utility model also provides a die casting machine of having above-mentioned pressure cylinder.

According to the utility model discloses an injection cylinder of first aspect embodiment, including piston rod and copper sheathing, the copper sheathing is located outside the piston rod, two at least annular mounting grooves have been seted up along the axial to the internal perisporium of copper sheathing, install the sealing washer that has the turning in the mounting groove, the corner is equipped with first convex part, first convex part along the axial extension and the radial extension of sealing washer, so that the sealing washer with form first extrusion clearance between the bottom surface of mounting groove, the sealing washer with form second extrusion clearance between the side of mounting groove.

According to the utility model discloses injection jar has following beneficial effect at least: form first extrusion clearance and second extrusion clearance between sealing washer and the copper sheathing, when the sealing washer received the effect of external force, first convex part can warp and extrude the copper sheathing to two wall of mounting groove like this to form inseparable sealed face, through the deformation range of increase sealing washer, improve sealed effect. Meanwhile, at least two seals are arranged, and the sealing effect is further improved.

According to some embodiments of the present invention, the first protruding portion is provided with two, two the first protruding portion is in the axial interval arrangement of sealing washer.

According to some embodiments of the invention, the sealing ring is further provided with at least one second protrusion, the second protrusion being along a radial extension of the sealing ring.

According to some embodiments of the invention, the second convex part is provided with three, three the second convex part is in the axial of sealing washer is interval arrangement.

According to some embodiments of the present invention, at least two guiding support rings are axially mounted on the inner circumferential wall of the copper sleeve.

According to some embodiments of the invention, at least two said guide support rings are arranged alternately with at least two said sealing rings along the axial direction.

According to some embodiments of the utility model, be equipped with the confession in the preceding cylinder cap of injection cylinder the passageway that the piston rod passed, the internal perisporium of passageway has the recess, the copper sheathing install in the recess.

According to some embodiments of the utility model, the periphery wall of copper sheathing with install the sealing ring between the preceding cylinder cap.

According to some embodiments of the utility model, the outer end of copper sheathing is equipped with the gland, the gland cover is located outside the piston rod, and with preceding cylinder cap fixed connection.

According to the utility model discloses a die casting machine of second aspect embodiment, include the utility model discloses the injection cylinder 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 injection cylinder, the sealing effect is good, and oil leakage can be reduced.

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 an injection cylinder provided in an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the shot sleeve shown in FIG. 1;

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

FIG. 4 is an enlarged partial schematic view at B of FIG. 3;

reference numerals:

the injection cylinder 10, the piston rod 100, the copper sleeve 200, the mounting groove 210, the guide support ring 220, the seal ring 230, the seal ring 300, the first convex portion 310, the second convex portion 320, the skeleton 330, the cylinder barrel 400, the front cylinder cover 500, the channel 510, the groove 520, the piston 600, the injection connecting plate 700, the injection rod 800 and the gland 900.

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, an embodiment of the present invention provides an injection cylinder 10, which includes a cylinder barrel 400, a front cylinder cover 500, a piston rod 100, a copper sleeve 200, and a piston 600.

The front cylinder cover 500 is fixedly installed at the end of the cylinder barrel 400, the piston 600 is in sliding fit with the inner peripheral wall of the cylinder barrel 400, one end of the piston rod 100 is fixedly connected with the piston 600, the other end of the piston rod penetrates through the front cylinder cover 500 to be fixedly connected with the injection connecting plate 700, and the injection connecting plate 700 is fixedly connected with the injection rod 800.

Outside the piston rod 100 was located to copper sheathing 200 cover, three annular mounting groove 210 has been seted up along the axial to the internal perisporium of copper sheathing 200, install the sealing washer 300 that has the turning in the mounting groove 210, the cross sectional structure of sealing washer 300 is down trapezoidal, the periphery wall is equipped with the turning with two lateral wall junctions, two corners all are equipped with first convex part 310, first convex part 310 extends along the circumference of sealing washer 300, two first convex parts 310 are at the epaxial interval arrangement of sealing washer 300, first convex part 310 extends with radially extending along the axial of sealing washer 300, so that form first extrusion clearance between the bottom surface of sealing washer 300 and mounting groove 210, form second extrusion clearance between the side of sealing washer 300 and mounting groove 210.

According to the utility model discloses the pressure is penetrated jar 10, has following beneficial effect at least: the first protrusion 310 is provided on the sealing ring 300 to form a first extrusion gap between the sealing ring 300 and the bottom surface of the mounting groove 210 and a second extrusion gap between the sealing ring 300 and the side surface of the mounting groove 210, so that when the first protrusion 310 is applied with an external force, the first protrusion 310 deforms toward both wall surfaces of the mounting groove 210 to extrude the bottom surface and the side surface of the mounting groove 210, thereby forming a tight sealing surface. This can increase the deformation range of the seal ring 300, and improve the sealing effect of the seal ring 300. Meanwhile, at least two seals are arranged on the copper bush 200 to form a series-connected sealing system, so that the service life is longer, and a better sealing effect can be realized.

It should be noted that, the number of the mounting grooves 210 may be two, or may also be four, and the specific number of the mounting grooves 210 may be selected according to specific situations, and is not limited specifically herein. The first protrusion 310 may be one.

According to some embodiments of the present invention, the size of the first extrusion gap is 2-12 mm, and the size of the second extrusion gap is 2-12 mm, so that the extrusion gap has a reasonable size range, which not only ensures that the sealing ring 300 has sufficient deformability, but also ensures the structural strength and reliability of the sealing ring 300.

According to some embodiments of the present invention, referring to fig. 4, the seal ring 300 is further provided with three second protrusions 320, the second protrusions 320 extending in a radial direction of the seal ring 300. The three second convex parts 320 respectively extend along the circumferential direction of the sealing ring 300, the three second convex parts 320 are arranged at intervals in the axial direction of the sealing ring, the thickness of the sealing ring 300 is increased by arranging the three second convex parts 320 at intervals, the structural strength and the reliability of the sealing ring 300 can be guaranteed, and the service life of the sealing ring 300 can be prolonged. It is understood that the second protrusions 320 may be provided in one, two, or four.

According to some embodiments of the present invention, the second protrusion 320 extends obliquely relative to the sealing ring 300, and the included angle between the second protrusion 320 and the inner peripheral wall of the sealing ring 300 is 10-40 degrees, so that the sealing ring 300 has sufficient deformability. Specifically, the second protrusion 320 extends obliquely from inside to outside in the thickness direction of the seal ring 300 in a direction away from the seal ring 300. This facilitates the production and processing of the second protrusion 320, and facilitates the control of the angle between the second protrusion 320 and the inner peripheral wall of the seal ring 300.

According to some embodiments of the utility model, refer to fig. 4, sealing washer 300 embeds there is annular skeleton 330, through built-in skeleton, 330, improves sealing washer 300's structural strength to guarantee sealed effect and increase of service life. Simple processing and low cost.

According to some embodiments of the present invention, the sealing ring 300 is an injection molded integral piece. Therefore, the structural strength and the sealing reliability of the sealing ring 300 are improved, and the production and the processing of the sealing ring 300 are facilitated.

According to some embodiments of the present invention, the frame 330 is a metal frame, and the metal frame can be recycled.

According to some embodiments of the present invention, referring to fig. 3, three guiding support rings 220 are installed along the axial direction on the inner peripheral wall of the copper bush 200, and the guiding support rings 220 can play a role of preventing the copper bush 200 from causing frictional wear to the front end surface of the piston rod 100. Specifically, three guide support rings 220 and three seal rings 300 are alternately arranged in the axial direction.

According to some embodiments of the present invention, referring to fig. 3, a channel 510 for the piston rod 100 to pass through is provided in the front cylinder cover 500 of the injection cylinder 10, the inner peripheral wall of the channel 510 has a groove 520, and the copper bush 200 is installed in the groove 520. The copper bush 200 is mounted in the groove 520, so that the assembly and disassembly are convenient.

According to some embodiments of the present invention, referring to fig. 3, a sealing ring 230 is installed between the outer peripheral wall of the copper bush 200 and the front cylinder cover 500 to seal a gap between the outer peripheral wall of the copper bush 200 and the front cylinder cover 500.

According to the utility model discloses a some embodiments, the outer end of copper sheathing 200 is equipped with gland 900, and outside piston rod 100 was located to gland 900 cover to with preceding cylinder cap 500 fixed connection, it is fixed with copper sheathing 200 through gland 900, swift convenient again, also do benefit to the later stage and overhaul.

According to the embodiment of the second aspect of the present invention, the die casting machine (not shown in the figure) comprises the injection cylinder 10 of any embodiment of the first aspect of the present invention.

According to the utility model discloses die casting machine has following beneficial effect at least: by adopting the injection cylinder 10, the sealing effect is good, and oil leakage can be reduced.

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 shot sleeve, comprising:

a piston rod;

the copper sheathing, the cover is located outside the piston rod, two at least annular mounting grooves have been seted up along the axial to the internal perisporium of copper sheathing, install the sealing washer that has the turning in the mounting groove, the corner is equipped with first convex part, first convex part along the axial extension and the radial extension of sealing washer, so that the sealing washer with form first extrusion clearance between the bottom surface of mounting groove, the sealing washer with form second extrusion clearance between the side of mounting groove.

2. The shot sleeve of claim 1 wherein said first raised portions are provided in two, two of said first raised portions being spaced axially of said seal ring.

3. The shot sleeve of claim 2 wherein said seal ring is further provided with at least one second projection extending radially of said seal ring.

4. The shot sleeve of claim 3 wherein said second protrusions are provided in three, three of said second protrusions being spaced axially of said seal ring.

5. The shot sleeve of claim 1 wherein said inner peripheral wall of said copper sleeve is axially mounted with at least two guide support rings.

6. The shot sleeve of claim 5 wherein at least two said guide support rings alternate with at least two said seal rings in an axial direction.

7. The shot sleeve as defined in any one of claims 1 to 6 wherein said front cylinder cover of said shot sleeve is provided with a passage therein through which said piston rod passes, said passage having an inner peripheral wall provided with a groove, said copper sleeve being mounted in said groove.

8. The shot sleeve of claim 7 wherein a seal ring is mounted between said outer peripheral wall of said copper sleeve and said front cylinder head.

9. The shot sleeve as defined in claim 7 wherein said copper sleeve has a gland at its outer end, said gland being mounted over said piston rod and fixedly connected to said front cylinder head.

10. A die casting machine comprising a shot sleeve as defined in any one of claims 1 to 9.

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