CN219827902U - Double-piston type high-thrust cylinder - Google Patents

Abstract

The utility model discloses a double-piston type high-thrust cylinder which comprises a mounting template, a cylinder cover and an upper piston, wherein a stopper is movably connected inside the upper piston, a second sealing ring is connected to the outer side of the stopper, a cylinder body is connected inside the mounting template, a lower piston is movably connected inside the cylinder body, and an air inlet is formed in the cylinder body. According to the utility model, the lower piston is arranged, the air inlet is arranged on the cylinder body corresponding to the upper piston and the lower piston through the upper piston, the lower piston and the cylinder body and the cylinder head, air is introduced into the air inlet, the air directly acts on the upper side of the upper piston, and simultaneously, the air is synchronously acted on the upper side of the lower piston through the air inlet inclined hole on the side surface of the cylinder body, so that the upper piston and the lower piston are synchronously pushed by the air to form a high-pressure double-piston pushing structure, thereby realizing larger pushing force, perfectly solving the requirement of matching design with a small product mould, simultaneously ensuring a hot runner system to be more stable, ensuring the product gate sealing glue, and effectively ensuring the product quality and appearance.

Description

Double-piston type high-thrust cylinder

Technical Field

The utility model relates to the technical field of cylinders, in particular to a double-piston type high-thrust cylinder.

Background

In order to control the fusion position of plastics in the production of plastic products, so that the products have better appearance and molding quality, a hot runner system is usually a needle valve type hot runner system, and an oil cylinder or an air cylinder is used for driving a valve needle to move so as to control the closing of a hot nozzle, so that the purpose is achieved.

However, in the prior art, in actual use, in view of the fact that the number of hot runner dies is large, the product interval is small, under the condition that the center distance is small, the diameter of a hot runner cylinder is limited, the driving force is insufficient, and the phenomena of unsmooth operation, blocking and insufficient sealing of a valve needle are caused, so that production is stopped, or the quality of a product gate on a product is seriously affected.

Disclosure of Invention

The utility model aims to provide a double-piston type high-thrust cylinder, which solves the technical problems of unsmooth operation, blocking and insufficient sealing of a valve needle caused by insufficient driving force due to a large number of hot runner dies and small product spacing in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a high thrust cylinder of double piston formula, includes installation template, cylinder head and last piston, the internally connected of installation template has the piston, the inside swing joint of going up the piston has the stopper young, the outside of stopper young is connected with No. two sealing washer, the internally connected of installation template has the cylinder body, and the cylinder body is located the outside of last piston, the inside swing joint of cylinder body has the piston down, the air inlet has been seted up to the inside of cylinder body.

Preferably, a first air inlet hole is formed in one side of the installation template in a penetrating mode, a second air inlet hole is formed in one side of the installation template in a penetrating mode, and the second air inlet hole is located below the first air inlet hole.

Preferably, the top of the mounting template is connected with a cylinder cover in a penetrating way, the bottom end of the cylinder cover is contacted with the top end of the cylinder body, and four groups of screws are connected in the cylinder cover in a penetrating way.

Preferably, the outside of the upper piston is connected with a first sealing ring, and the first sealing ring is contacted with the inner wall of the cylinder body.

Preferably, the bottom end of the plug is movably connected with a valve needle.

Preferably, the outside of cylinder body is connected with the sealing washer No. three, the bottom of cylinder body is connected with the cylinder bottom.

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

1. according to the utility model, the lower piston is arranged, the upper piston arranged at the front part of the cylinder body, the lower piston corresponding to the upper piston arranged in the cylinder body and the cylinder cover matched with the cylinder body are used for forming the inner cavity of the cylinder, the cylinder body is provided with the air inlets corresponding to the upper piston and the lower piston, the air inlets are used for air inflow, gas directly acts on the upper side of the upper piston, and simultaneously acts on the upper side of the lower piston synchronously through the air inlet inclined holes on the side surface of the cylinder body, so that the upper piston and the lower piston are pushed by the gas synchronously, and a high-pressure double-piston pushing structure is formed, thereby realizing larger pushing force, perfectly solving the requirement of matched design with a small product mould, enabling a hot runner system to be more stable, enabling product gate sealing to be more guaranteed, and effectively guaranteeing product quality and appearance.

2. According to the utility model, the first sealing ring is arranged, the first sealing ring, the second sealing ring and the third sealing ring are annular sealing rings, and the sealing rings are matched with each other to effectively improve the air tightness between the working parts of the double-piston type high-thrust air cylinder in the movable working process, and the guiding performance of the air cylinder can be improved through the sealing rings, so that the abrasion of the piston sealing rings is reduced, and the friction resistance is reduced.

Drawings

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

FIG. 2 is a cross-sectional view of a cylinder head of the present utility model;

FIG. 3 is a cross-sectional view of the cylinder of the present utility model;

FIG. 4 is a cross-sectional view of the upper piston of the present utility model;

fig. 5 is a top cross-sectional view of the cylinder head of the present utility model.

In the figure: 1. installing a template; 101. a first air inlet; 102. a second air inlet; 2. a cylinder head; 201. a screw; 3. an upper piston; 301. a first sealing ring; 4. plugging; 401. a second sealing ring; 402. a valve needle; 5. a cylinder; 501. a third sealing ring; 502. a lower piston; 503. a cylinder bottom; 504. an air inlet.

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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, 2, 3, 4 and 5, the present utility model provides an embodiment: a double-piston type high-thrust cylinder;

including last piston 3, stopper young 4 and cylinder body 5, the internal connection of installation template 1 has last piston 3, the inside swing joint of last piston 3 has stopper young 4, the outside of stopper young 4 is connected with No. two sealing washer 401, the internal connection of installation template 1 has cylinder body 5, and cylinder body 5 is located the outside of last piston 3, the inside swing joint of cylinder body 5 has lower piston 502, air inlet 504 has been seted up to the inside of cylinder body 5, go up the vacuum chamber is jointly constituteed to piston 3, cylinder body 5 and cylinder head 2, go up the contact of piston 3 and cylinder body 5 through outside sealing washer 301, can make up piston 3 at the inside of cylinder body 5 reciprocate through pressure, stopper young 4 contacts through the inner wall of No. two sealing washer 401 and last piston 3 for seal the outside of stopper young 4, cylinder body 5 is one of the main constitution structure of double piston type high thrust cylinder, in the production that is used for plastic goods, utilize cylinder drive motion control hot nozzle's closure in order to reach the purpose, cylinder body 5 is cylindric, the mounting position is provided for lower piston 502, lower piston 502 passes through swing joint and installs in cylinder body 5, it has corresponding air inlet 502 to push down piston 502 to form the air inlet 502 on the side through the air inlet 502, it is synchronous to be provided with upper piston 502 to push down piston 502 through the inside of cylinder body 5, it has the air inlet 502 to take effect on the side to go up side of air inlet 502 to the side through the air inlet 502 to the air side is synchronous.

Referring to fig. 1, 2, 3 and 5, the present utility model provides an embodiment: a double-piston type high-thrust cylinder;

including installation template 1 and cylinder cap 2, an inlet port 101 has been run through to one side of installation template 1, no. two inlet ports 102 have been run through to one side of installation template 1, and No. two inlet ports 102 are located the below of an inlet port 101, the top of installation template 1 is run through and is connected with cylinder cap 2, and the bottom of cylinder cap 2 contacts with the top of cylinder body 5, the inside of cylinder cap 2 is run through and is connected with four screw 201 of group, the outside of upper piston 3 is connected with a sealing washer 301, a sealing washer 301 contacts with the inner wall of cylinder body 5, the bottom swing joint of stopper 4 has valve needle 402, the outside of cylinder body 5 is connected with No. three sealing washer 501, the bottom of cylinder body 5 is connected with cylinder bottom 503, installation template 1 is one of the main packaging structure of dual piston type high thrust cylinder, for No. 101 and No. two inlet ports 102 run through the space of seting up, no. 101 and No. two inlet ports 102 can be connected with external power source air pump, cylinder cap 2 can be dismantled through the activity with installation template 1 and be connected, be convenient for carry out periodic maintenance and equipment to the inside work subassembly of installation template 1, no. 301, no. two sealing washer 401 and No. three sealing washer contact with the inner wall of cylinder body 5, the bottom swing joint has valve needle 402, the bottom of cylinder body is connected with the bottom 503 through the sealing washer between each sealing washer and the cylinder bottom of cylinder bottom 503 through the high-efficient sealing washer that is used for sealing washer between the cylinder bottom of cylinder 503, the sealing washer is used for sealing cylinder bottom of cylinder 503.

Working principle: through set up in the upper piston 3 of cylinder body 5 front portion, arrange the lower piston 502 that corresponds with upper piston 3 in the cylinder body 5, and use the cylinder head 2 that is used for forming the cylinder inner chamber with the cylinder body 5 cooperation, correspond upper piston 3 and lower piston 502 on the cylinder body 5 and be provided with air inlet 504, air inlet 504 is intake, the gas is directly acted on upper piston 3 upside, simultaneously through cylinder body 5 side inlet inclined hole synchronous action lower piston 502 upside, upper piston 3 and lower piston 502 synchronous receive the gas promotion, form high pressure double-piston promotion structure, thereby realize bigger thrust, perfect solution and the demand of little product mould cooperation design, hot runner system is more stable simultaneously, product runner sealing gum is also more ensured, can effectually guarantee product quality and outward appearance, sealing washer 301, sealing washer 401 and No. three sealing washer 501 are the ring sealing washer, through the work of mutually supporting between each sealing washer, can effectively improve the gas tightness between the high thrust cylinder working piece activity in the work of double-piston type.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a high thrust cylinder of double piston formula, includes installation template (1), cylinder head (2) and last piston (3), its characterized in that: the inside of installation template (1) is connected with piston (3), the inside swing joint of last piston (3) has stopper young (4), the outside of stopper young (4) is connected with No. two sealing washer (401), the inside connection of installation template (1) has cylinder body (5), and cylinder body (5) are located the outside of last piston (3), the inside swing joint of cylinder body (5) has lower piston (502), air inlet (504) have been seted up to the inside of cylinder body (5).

2. The dual piston high thrust cylinder of claim 1 wherein: one side of the installation template (1) is penetrated and provided with a first air inlet hole (101), one side of the installation template (1) is penetrated and provided with a second air inlet hole (102), and the second air inlet hole (102) is positioned below the first air inlet hole (101).

3. The dual piston high thrust cylinder of claim 1 wherein: the top of installation template (1) is connected with cylinder head (2) in a penetrating way, and the bottom of cylinder head (2) contacts with the top of cylinder body (5), the inside of cylinder head (2) is connected with four sets of screw (201) in a penetrating way.

4. The dual piston high thrust cylinder of claim 1 wherein: the outer side of the upper piston (3) is connected with a first sealing ring (301), and the first sealing ring (301) is contacted with the inner wall of the cylinder body (5).

5. The dual piston high thrust cylinder of claim 1 wherein: the bottom end of the plug (4) is movably connected with a valve needle (402).

6. The dual piston high thrust cylinder of claim 1 wherein: the outside of cylinder body (5) is connected with No. three sealing washer (501), the bottom of cylinder body (5) is connected with cylinder bottom (503).