CN221209839U - Upper die ultrathin ejection cylinder of die - Google Patents

Abstract

The utility model discloses an upper die ultrathin ejection cylinder of a die, which comprises a cylinder body, wherein an inner cavity with an upper end opening is arranged in the cylinder body; the upper top piston is arranged in the inner cavity, and an oil inlet cavity is formed between the bottom of the upper top piston and the bottom of the inner cavity; the screw thread pressing sleeve is arranged on the outer side of the upper part of the upper top piston, the radial outer side of the screw thread pressing sleeve is in threaded connection with the inner side wall of the inner cavity, an exhaust front cavity is formed between the upper top piston on the lower side of the screw thread pressing sleeve and the cylinder body, the exhaust front cavity is communicated with the outside through an exhaust port, and a dust plug is arranged at the end part of the exhaust port; and the dustproof ring is arranged between the radial inner side of the threaded pressing sleeve and the upper top piston. The utility model can solve the problem that external pollutants easily enter the oil cylinder in the prior art.

Description

Upper die ultrathin ejection cylinder of die

Technical Field

The utility model relates to the technical field of die casting die structures, in particular to an upper die ultrathin ejection cylinder of a die.

Background

The die casting die is a die commonly used in the current metal material forming, an oil cylinder is needed to jack up an upper die when the die casting die is opened, the volume of the existing jack-up oil cylinder is large, the space of the die is occupied when the die casting die is installed, and in the using process, because some dies need to be vacuumized, external pollutants are easily sucked into a front cavity of the oil cylinder, and finally a sealing element is damaged, so that the existing ejection oil cylinder needs to be improved and adjusted.

Disclosure of utility model

The utility model provides an upper die ultrathin ejection cylinder of a die, which can solve the problem that external pollutants easily enter the cylinder in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the upper die ultrathin ejection cylinder of the die comprises a cylinder body, wherein an inner cavity with an opening at the upper end is arranged in the cylinder body; the upper top piston is arranged in the inner cavity, and an oil inlet cavity is formed between the bottom of the upper top piston and the bottom of the inner cavity; the screw thread pressing sleeve is arranged on the outer side of the upper part of the upper top piston, the radial outer side of the screw thread pressing sleeve is in threaded connection with the inner side wall of the inner cavity, an exhaust front cavity is formed between the upper top piston on the lower side of the screw thread pressing sleeve and the cylinder body, the exhaust front cavity is communicated with the outside through an exhaust port, and a dust plug is arranged at the end part of the exhaust port; and the dustproof ring is arranged between the radial inner side of the threaded pressing sleeve and the upper top piston.

Preferably, the upper end of the radial inner side wall of the thread pressing sleeve is provided with a sealing ring groove, the dust ring is embedded and installed in the sealing ring groove, the side wall of the sealing ring groove is provided with a circle of positioning convex ribs, and the positioning convex ribs are embedded into the positioning grooves on the radial outer side of the dust ring.

Preferably, a sealing groove is arranged on the radial inner side wall of the dust ring.

Preferably, an oil pressure sealing ring is embedded and arranged at the radial outer side of the lower part of the upper top piston, and a Gelai ring contacted with the side wall of the inner cavity is arranged at the radial outer side of the oil pressure sealing ring.

Preferably, the lower end face of the upper top piston is centrally provided with an oil pressure concave part.

Compared with the prior art, the utility model has the beneficial effects that:

simple structure, whole small, the thickness is thin, can occupy less space, through setting up dust plug and dust ring, can effectively solve the problem that outside pollutant gets into easily in the hydro-cylinder among the prior art.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a front cross-sectional view of the structure of the present utility model;

fig. 3 is an enlarged structural view at a of fig. 2.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

As shown in fig. 1-3, the utility model provides an upper die ultrathin ejection cylinder of a die, which comprises a cylinder body 1, wherein an inner cavity with an open upper end is arranged in the cylinder body 1; the upper top piston 2 is arranged in the inner cavity, and an oil inlet cavity 4 is formed between the bottom of the upper top piston 2 and the bottom of the inner cavity; the screw thread pressing sleeve 3 is arranged on the outer side of the upper part of the upper top piston 2, the radial outer side of the screw thread pressing sleeve 3 is in threaded connection with the inner side wall of the inner cavity, an exhaust front cavity 9 is formed between the upper top piston 2 on the lower side of the screw thread pressing sleeve 3 and the cylinder body 1, the exhaust front cavity 9 is communicated with the outside through an exhaust port 10, and a dust plug 5 is arranged at the end part of the exhaust port 10; the dustproof ring 6 is arranged between the radial inner side of the thread pressing sleeve 3 and the upper top piston 2, specifically, the dustproof plug 5 and the dustproof ring 6 effectively prevent external pollutants from entering the cylinder body 1 from a gap at the outer side of the upper top piston 2 and the exhaust port 10, the dustproof ring 6 can be a rubber piece, the dustproof plug 5 can be a porous structure and is detachably arranged on the cylinder body 1, the axial thickness of the thread pressing sleeve 3 is smaller, threads between the thread pressing sleeve 3 and the cylinder body 1 are shorter, in order to avoid damage to the threads, oil inlet and oil discharge of the oil inlet cavity 4 are faster in the using process of the ejection cylinder, pressure relief is carried out immediately after the upper top piston 2 is jacked up, so that the axial force of the upper top piston 2 to the thread pressing sleeve 3 is smaller, and the threads are prevented from being damaged.

In this embodiment, as shown in fig. 2-3, as a specific implementation manner of the installation of the dust ring 6, the upper end of the radial inner side wall of the threaded pressing sleeve 3 is provided with a sealing ring groove, the dust ring 6 is embedded and installed in the sealing ring groove, a circle of positioning ribs 31 are arranged on the side wall of the sealing ring groove, the positioning ribs 31 are embedded into a positioning groove on the radial outer side of the dust ring 6, the positioning ribs 31 can axially limit the dust ring 6, the dust ring 6 is prevented from being separated from the sealing ring groove, and the installation is relatively simple, and the upper piston 2 can also contact the dust ring 6 from the inner side.

In some embodiments, in order to improve the sealing and dust-proof effects of the dust-proof ring 6, the radial inner side wall of the dust-proof ring 6 is provided with a sealing groove 61, and the sealing groove 61 is deformed in the process of contacting with the upper top piston 2, so that the contact seal is always maintained.

In some embodiments, an oil pressure sealing ring 7 is embedded and arranged at the radial outer side of the lower part of the upper top piston 2, and a gurley ring 8 contacted with the side wall of the inner cavity is arranged at the radial outer side of the oil pressure sealing ring 7. Meanwhile, an oil pressure concave part 21 is arranged in the middle of the lower end face of the upper top piston 2, hydraulic oil can be stored in the oil pressure concave part 21, and the upper top of the hydraulic oil can be fully utilized.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present utility model) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Claims (5)

1. An upper die ultra-thin ejection cylinder of a die is characterized by comprising:

The cylinder body (1), the interior of the cylinder body (1) is provided with an inner cavity with an opening at the upper end;

The upper top piston (2) is arranged in the inner cavity, and an oil inlet cavity (4) is formed between the bottom of the upper top piston (2) and the bottom of the inner cavity;

The screw thread pressing sleeve (3) is arranged on the outer side of the upper part of the upper top piston (2), the radial outer side of the screw thread pressing sleeve (3) is in threaded connection with the inner side wall of the inner cavity, an exhaust front cavity (9) is formed between the upper top piston (2) at the lower side of the screw thread pressing sleeve (3) and the cylinder body (1), the exhaust front cavity (9) is communicated with the outside through an exhaust port (10), and a dust plug (5) is arranged at the end part of the exhaust port (10);

and the dustproof ring (6) is arranged between the radial inner side of the threaded pressing sleeve (3) and the upper top piston (2).

2. The upper die ultra-thin ejection cylinder of the die of claim 1, wherein: the upper end of the radial inner side wall of the thread pressing sleeve (3) is provided with a sealing ring groove, the dustproof ring (6) is embedded and installed in the sealing ring groove, the side wall of the sealing ring groove is provided with a circle of positioning convex ribs (31), and the positioning convex ribs (31) are embedded into the positioning grooves on the radial outer side of the dustproof ring (6).

3. The upper die ultra-thin ejection cylinder of the die of claim 2, wherein: a sealing groove (61) is arranged on the radial inner side wall of the dustproof ring (6).

4. The upper die ultra-thin ejection cylinder of the die of claim 1, wherein: the radial outside of the lower part of the upper top piston (2) is embedded and provided with an oil pressure sealing ring (7), and the radial outside of the oil pressure sealing ring (7) is provided with a Griley ring (8) contacted with the side wall of the inner cavity.

5. The upper die ultra-thin ejection cylinder of the die of claim 1, wherein: the lower end face of the upper top piston (2) is provided with an oil pressure concave part (21) in the middle.