CN221231555U - Four-ring self-compensating injection head for die casting machine - Google Patents

Abstract

The utility model relates to a four-ring self-compensating injection head for a die casting machine, which comprises an injection head body, wherein an annular groove is formed in the outer circumferential surface of the injection head body, a front wear-resisting ring and a rear wear-resisting ring are respectively arranged at two ends of the annular groove, elastic rings are respectively arranged at the inner sides of the front wear-resisting ring and the rear wear-resisting ring, a front sealing ring and a rear sealing ring which are arranged in the annular groove are arranged between the front wear-resisting ring and the rear wear-resisting ring, and the front wear-resisting ring, the front sealing ring, the rear sealing ring and the rear wear-resisting ring are distributed side by side along the axial direction of the injection head body. The utility model has simple and reasonable structural design, and by adopting a four-ring structure and arranging two sealing rings between the front and rear wear-resistant rings, the tight fit between the injection head and the containing cup is ensured, the multi-layer sealing protection is realized, the material leakage and the air leakage are effectively prevented, and the high vacuum requirement is met.

Description

Four-ring self-compensating injection head for die casting machine

Technical field:

the utility model relates to a four-ring self-compensating injection head for a die casting machine.

The background technology is as follows:

With the increasing requirements of customers at home and abroad on the quality of die castings, vacuum die casting is also increasing, such as automobile parts, motorcycle parts, high-strength castings and the like, and particularly structural parts. The main factors affecting the vacuum degree of vacuum die casting are two: the precision of the mould and the tightness of the fit of the injection head and the containing cup. When the injection head moves repeatedly left and right in the containing cup, friction occurs between the injection head and the containing cup, so that the injection head and the containing cup are worn, gaps are formed between the injection head and the containing cup, the requirement of vacuum die casting cannot be met at the moment, the vacuum degree is reduced, and the quality of products is directly affected.

Chinese patent publication No. CN113909450a discloses a double-layer ring self-compensating injection head for a die casting machine and an assembling method thereof, in the structure disclosed in the patent publication, the abrasion of the injection head can be continuously compensated by the external supporting force action of an elastic layer, so as to ensure that the injection head and a containing cup can obtain more reliable sealing performance and longer service life. However, in the patent, the wear-resistant layer is of a two-layer structure (a front ring and a rear ring), a corresponding sealing structure is lacking between the two wear-resistant layers, the sealing protection effect is not ideal enough, the conditions of material running and air leakage are easy to occur, and the vacuum degree is influenced.

The utility model comprises the following steps:

the utility model aims at improving the problems existing in the prior art, namely the technical problem to be solved by the utility model is to provide the four-ring self-compensation injection head for the die casting machine, which is reasonable in design, not only can the abrasion of the injection head be continuously compensated, but also multi-layer sealing protection can be carried out.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a four rings are from compensation and are penetrated head for die casting machine, includes and penetrates the head body, be equipped with annular groove on the outer periphery of penetrating the head body, the both ends of annular groove are equipped with preceding wear ring and back wear ring respectively, the inboard of preceding wear ring and back wear ring all is equipped with the elasticity ring, be equipped with preceding sealing ring and the back sealing ring of installing in annular groove between preceding wear ring and the back wear ring, preceding sealing ring, back sealing ring and back wear ring distribute side by side along the axial direction of penetrating the head body.

Further, the front wear ring, the front seal ring, the rear seal ring, and the rear wear ring are abutted together.

Furthermore, the front wear-resistant ring, the front sealing ring, the rear sealing ring and the rear wear-resistant ring are all open annular bodies, and the openings of the front wear-resistant ring, the front sealing ring, the rear sealing ring and the rear wear-resistant ring are staggered with each other along the circumferential direction of the injection head body.

Furthermore, the front wear-resistant ring and the rear wear-resistant ring are both made of spring steel.

Further, a pair of mounting grooves for mounting the elastic ring are respectively formed in two ends of the groove bottom of the annular groove, the mounting grooves are annular, and the mounting grooves are distributed along the axial direction of the injection head body.

Compared with the prior art, the utility model has the following effects: the utility model has simple and reasonable structural design, and by adopting a four-ring structure and arranging two sealing rings between the front and rear wear-resistant rings, the tight fit between the injection head and the containing cup is ensured, the multi-layer sealing protection is realized, the material leakage and the air leakage are effectively prevented, and the high vacuum requirement is met.

Description of the drawings:

Fig. 1 is a schematic view of a front sectional configuration of an embodiment of the present utility model.

The specific embodiment is as follows:

The utility model will be described in further detail with reference to the drawings and the detailed description.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

As shown in figure 1, the four-ring self-compensating injection head for the die casting machine comprises an injection head body 1, wherein an annular groove 2 is formed in the outer circumferential surface of the injection head body 1, a front wear-resisting ring 3 and a rear wear-resisting ring 4 are respectively arranged at two ends of the annular groove 2, elastic rings 5 are arranged on the inner sides of the front wear-resisting ring 3 and the rear wear-resisting ring 4, when the injection head is worn, the injection head is influenced by the external supporting force of the elastic rings, and a wear-resisting layer is properly enlarged to ensure that the inner wall of a containing cup is tightly matched with the surface of the injection head, so that the service life of the injection head is prolonged; front sealing ring 6 and back sealing ring 7 installed in annular groove 2 are arranged between front wear-resisting ring 3 and back wear-resisting ring 4, and front wear-resisting ring 3, front sealing ring 6, back sealing ring 7 and back wear-resisting ring 4 are distributed side by side along the axial direction of injection head body 1. Through adopting four ring structure, and set up two sealing rings between preceding, back wear-resisting ring to guarantee to penetrate the tight fit of head and holding the cup, multilayer seal protects, effectively prevents the material of running out, gas leakage, reaches the high vacuum requirement.

In another embodiment, the front wear-resistant ring 3, the front sealing ring 6, the rear sealing ring 7 and the rear wear-resistant ring 4 are abutted together and coaxially arranged with the injection head body 1.

In another embodiment, the front wear-resistant ring 3, the front sealing ring 6, the rear sealing ring 7 and the rear wear-resistant ring 4 are all open annular bodies, and are sleeved in the annular groove of the injection head body after being opened by an open clamp during installation.

In another embodiment, the openings of the front wear-resistant ring 3, the front sealing ring 6, the rear sealing ring 7 and the rear wear-resistant ring 4 are staggered with each other along the circumferential direction of the injection head body during installation, so as to ensure the close fit of the injection head and the containing cup, realize multi-layer protection, prevent material leakage and air leakage, and meet the requirement of high vacuum.

In another embodiment, the front wear ring 3 and the rear wear ring 4 are made of spring steel to ensure sufficient wear resistance and elasticity.

In another embodiment, two ends of the bottom of the annular groove 2 are respectively provided with a pair of mounting grooves 8, each mounting groove 8 is internally provided with an elastic ring 5, the mounting grooves are in an annular shape, and the mounting grooves are distributed along the axial direction of the injection head body. Preferably, the elastic ring is an open ring body, the elastic ring is made of spring steel, and the elastic ring is sleeved in the mounting groove after being opened by an open clamp during mounting.

The utility model has the advantages that: (1) The abrasion of the injection head can be continuously compensated, so that the diameter of the injection head is ensured not to change within a certain time; (2) The front wear-resistant ring and the rear wear-resistant ring are made of spring steel so as to ensure enough wear resistance and elasticity; (3) The openings of the front wear-resistant ring, the rear wear-resistant ring, the front sealing ring and the rear sealing ring are staggered when being installed, so that the tight fit of the injection head and the containing cup is ensured, the multi-layer protection is realized, the material leakage is prevented, and the high vacuum requirement is met.

If the utility model discloses or relates to components or structures fixedly connected with each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).

In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.

Any part provided by the utility model can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present utility model or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the utility model, it is intended to cover the scope of the utility model as claimed.

Claims (5)

1. The utility model provides a four rings are from compensation injection head for die casting machine, includes injection head body, be equipped with annular groove on the outer periphery of injection head body, annular groove's both ends are equipped with preceding wear-resisting ring and back wear-resisting ring respectively, the inboard of preceding wear-resisting ring and back wear-resisting ring all is equipped with elasticity ring, its characterized in that: front sealing ring and back sealing ring installed in the annular groove are arranged between the front wear-resistant ring and the back wear-resistant ring, and the front wear-resistant ring, the front sealing ring, the back sealing ring and the back wear-resistant ring are distributed side by side along the axial direction of the injection head body.

2. The four-ring self-compensating injection head for a die casting machine according to claim 1, wherein: the front wear ring, the front sealing ring, the rear sealing ring and the rear wear ring are abutted together.

3. The four-ring self-compensating injection head for a die casting machine according to claim 1, wherein: the front wear-resistant ring, the front sealing ring, the rear sealing ring and the rear wear-resistant ring are all open annular bodies, and the openings of the front wear-resistant ring, the front sealing ring, the rear sealing ring and the rear wear-resistant ring are staggered with each other along the circumferential direction of the injection head body.

4. The four-ring self-compensating injection head for a die casting machine according to claim 1, wherein: the front wear-resistant ring and the rear wear-resistant ring are made of spring steel.

5. A four-ring self-compensating injection head for a die casting machine as claimed in claim 1, wherein; the two ends of the bottom of the annular groove are respectively provided with a pair of mounting grooves for mounting the elastic ring, the mounting grooves are annular, and the mounting grooves are distributed along the axial direction of the injection head body.