CN210290294U

CN210290294U - Pressurizing oil cylinder

Info

Publication number: CN210290294U
Application number: CN201920697330.9U
Authority: CN
Inventors: 简宗刚; 郝朝亮; 范国领
Original assignee: Zhengzhou Zhengfei Technology Co ltd
Current assignee: Zhengzhou Zhengfei Technology Co ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2020-04-10
Anticipated expiration: 2029-05-16

Abstract

The utility model relates to a pressure boosting oil cylinder, which comprises a main oil cylinder body, a pressure boosting cylinder body and a rear end cover, wherein a pressure boosting piston is arranged in the pressure boosting cylinder body, the pressure boosting piston divides the pressure boosting cylinder body into pressure boosting cavities, the rear end cover is provided with a first channel, a second channel and a third channel, the first channel is parallel to the central line of the connecting guide rod and penetrates through the rear end cover, the second channel is vertically intersected with the first channel and extends into the rear end cover from the side face of the rear end cover, the third channel is parallel to the first channel and is closer to the central line of the rear end cover than the first channel in the radial direction of the rear end cover, the third channel is communicated with the second channel and the pressurizing cavity, a sequence valve is installed at a channel opening, facing away from the pressurizing cylinder body, of the rear end cover and located on the first channel, a valve core of the sequence valve abuts against the intersection of the first channel and the second channel, and a one-way valve for enabling oil in the pressurizing cavity to flow to the second channel is installed in the third. The pressurization work is automatically completed through the sequence valve and the one-way valve, other auxiliary elements are not needed, and the integration level is high.

Description

Pressurizing oil cylinder

Technical Field

The utility model belongs to the technical field of hydraulic pressure, concretely relates to pressure boost hydro-cylinder.

Background

In the occasions of pressure machinery, injection molding machinery, blow molding machinery and the like which need large locking force, the common oil cylinder needs to increase the structural volume and an auxiliary oil cylinder to meet the requirements, so that the structure and the hydraulic system are complicated, and the cost is increased. The pressurizing cylinder needs to be used, for example, a pressurizing cylinder (publication number: CN205298095U, published as 2016.06.08) disclosed by Chinese utility model patent comprises a main cylinder body and a pressurizing cylinder body, a main piston is arranged in the main cylinder body, a piston rod is fixedly connected on the main piston, a side pressure port is arranged at the bottom of the main cylinder body, the main piston divides the main cylinder body into a rod cavity and a rodless cavity, the bottom of the main cylinder body is connected with the pressurizing cylinder body, a pressurizing piston is arranged in the pressurizing cylinder body, a connecting guide rod which is in sealing fit with the pressurizing piston is arranged in the pressurizing piston, two pairs of reverse sealing Stent seals are arranged between the pressurizing piston and the connecting guide rod, the pressurizing piston divides the pressurizing cylinder body into a pressurizing cavity, the connecting guide rod is provided with a connecting guide rod oil port communicated with the high-pressure cavity, the bottom of the pressurizing cylinder body is connected with a rear end cover, and the rear end cover is provided with an oil port communicated with the high-pressure cavity and an oil port communicated with the connecting guide rod. Although the common oil cylinder is optimized, the boosting oil cylinder is low in integration level, the boosting oil cylinder can finish increasing work only by depending on other auxiliary elements, depends on external control and is inconvenient to popularize and use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure boost hydro-cylinder to solve the problem that current pressure boost hydro-cylinder integrated level is low, need rely on other auxiliary element.

In order to achieve the above object, the utility model discloses a pressurized oil cylinder adopts following technical scheme: the pressurizing oil cylinder comprises a main oil cylinder body, a pressurizing cylinder body and a rear end cover, a pressurizing piston is arranged in the pressurizing cylinder body, a connecting guide rod which is in sealing fit with the pressurizing piston is arranged in the pressurizing piston, the pressurizing piston divides the pressurizing cylinder body into a pressurizing cavity, a high-pressure cavity and an exhaust cavity, an oil port which is communicated with the high-pressure air cavity and an oil port which is communicated with the connecting guide rod are arranged on the rear end cover, a first channel, a second channel and a third channel are also arranged on the rear end cover, the first channel is arranged in parallel with the central line of the connecting guide rod and penetrates through the rear end cover, the second channel is vertically intersected with the first channel and extends from the side surface of the rear end cover to the inside of the rear end cover, the third channel is arranged in parallel with the first channel and is radially closer to the central line of the rear end cover than the first channel, the third channel is communicated with the second channel, a valve core of the sequence valve is abutted to the intersection of the first channel and the second channel, a plug is installed at an outer channel opening of the second channel, and a one-way valve for enabling oil in the pressurization cavity to flow to the second channel is installed in the third channel.

Has the advantages that: the novel booster cylinder is good in boosting effect, simple in control, high-pressure work can be automatically completed through the integrated sequence valve and the integrated one-way valve without other auxiliary elements, the integration level is higher, the cost is reduced, the stability is improved, and the novel booster cylinder is convenient to popularize and use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts;

FIG. 1 is a schematic diagram of a construction of an embodiment of a booster cylinder;

FIG. 2 is a schematic diagram of the structure of an integrated sequence valve.

In the figure: 1-main cylinder body, 2-main piston, 3-main piston rod, 4-booster cylinder body, 5-booster piston, 6-connecting guide rod, 7-rear end cover, 71-first channel, 72-second channel, 73-third channel, 8-exhaust cavity, 9-high pressure cavity, 10-rod cavity, 11-connecting guide rod oil port, 12-pressure measuring port, 13-exhaust port, 14-rear end cover main oil inlet, 15-booster cavity, 16-integrated sequence valve and 17-integrated one-way valve.

Detailed Description

In order to make the technical purpose, technical solution and advantageous effects of the present invention clearer, the technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.

The specific embodiment of the booster cylinder is shown in fig. 1, and comprises a main cylinder body 1, and a main piston 2 hermetically matched with the main cylinder body 1 is arranged in the main cylinder body 1; the main piston 2 is fixedly connected with a main piston rod 3, and the bottom of the main oil cylinder body is provided with a side pressure port 12; the main piston 2 divides the main oil cylinder body into a rod cavity 10 and a rodless cavity 9, the bottom of the main oil cylinder is connected with a pressure cylinder body 4 in an installing mode, the pressure cylinder comprises a pressure cylinder body 4 connected with the main oil cylinder body 1, a pressure piston 5 in sealing fit with the pressure cylinder body 4 is arranged in the pressure cylinder body 4, and a connecting guide rod 6 in sealing fit with the pressure piston 5 is arranged in the pressure piston 5; the pressurizing piston 5 divides the pressurizing cylinder 4 into a pressurizing cavity 15, a high-pressure cavity 9 and an exhaust cavity 8, the connecting guide rod 6 is provided with a connecting guide rod oil port 11 communicated with the high-pressure cavity, and the bottom of the pressurizing cylinder 4 is connected with and provided with a rear end cover 7.

The rear end cover 7 is further provided with a first channel 71, a second channel 72 and a third channel 73, the first channel 71 is arranged in parallel with the central line of the connecting guide rod 6 and penetrates through the rear end cover 7, the second channel 72 is perpendicularly intersected with the first channel 71 and extends from the side surface of the rear end cover 7 to the inside of the rear end cover 7, the third channel 73 is arranged in parallel with the first channel 71 and is closer to the central line of the rear end cover 7 than the first channel 71 in the radial direction of the rear end cover 7, the third channel 73 is communicated with the second channel 72 and the pressurizing cavity 15, an integrated sequence valve 16 is installed on the position, facing away from the pressurizing cylinder body 4, of the rear end cover 7, of the first channel 71, of a valve core of the sequence valve 16 abuts against the intersection of the first channel 71 and the second channel 72, a plug is installed at the outer channel opening of the second channel 72, and an integrated one-way valve 17 for enabling oil in the pressurizing.

Working principle (taking the whole working process as an example) and forward process: as shown in fig. 1, hydraulic oil enters the rodless cavity 9 from the rear end cover oil inlet 14 through the connecting rod oil port 11, and the hydraulic oil pushes the main piston 2 to advance.

And (3) a pressurization process: the main piston 2 advances to the right position, the pressure rises, the external integrated sequence valve is opened, hydraulic oil enters the pressurizing cavity 15 from the main oil inlet 14 of the rear end cover through the integrated sequence valve, the pressurizing piston 5 is pushed to compress the hydraulic oil in the high-pressure cavity 9 until the stroke of the pressurizing piston 5 is completed, the pressure of the high-pressure cavity 9, namely the rodless cavity, rises to meet the requirement of locking force, the purpose of pressurizing is achieved, and the pressurizing multiple is related to the area ratio of the large end face to the small end face of the pressurizing piston 5.

A back-off process: the pressure of a main oil inlet 14 of the rear end cover is released, and oil in the pressurizing cavity 15 flows to the main oil inlet 14 through the integrated one-way valve 17 to be released; the piston 5 moves backwards until the connecting guide rod oil port 11 is communicated with the high-pressure cavity 9, at the moment, the booster piston 5 returns to the initial position, hydraulic oil in the rodless cavity (high-pressure cavity) 9 returns to an oil tank through the connecting guide rod oil port 11 and the rear end cover oil inlet 14, and the main piston returns to complete the retreating process.

The utility model discloses a connect the pressure cylinder at 1 one end of the master cylinder body and make novel pressure cylinder structure simpler, the pressure boost is effectual, need not other auxiliary element through the automatic pressure boost work of accomplishing of integrated sequence valve and integrated check valve, and the integrated level is higher, and the cost is reduced has improved stability, convenient to popularize and use simultaneously.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating but not limiting the technical solution of the present invention, and any equivalent replacement and modification or partial replacement which do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. Novel pressure boost hydro-cylinder, including the master cylinder body, install in the master cylinder body rather than sealed complex master piston, fixedly connected with piston rod on the master piston, the master piston will the master cylinder divide into pole chamber and rodless chamber, there is the oil inlet with rodless chamber intercommunication on the master cylinder, install the pressure boost cylinder at the bottom of the master cylinder, the pressure boost cylinder includes the pressure boost cylinder body of being connected with the master cylinder, install in the pressure boost cylinder body rather than sealed complex pressure boost piston, install in the pressure boost piston rather than sealed complex connecting guide arm, the pressure boost piston divides pressure boost cylinder body inner chamber into pressure boost chamber, high-pressure chamber and exhaust chamber, install at the bottom of the pressure boost cylinder with pressure boost cylinder body complex rear end cap, the rear end cap is equipped with main oil inlet, integrated sequence valve, integrated check valve, main oil inlet with connect guide arm hydraulic fluid port intercommunication mouth and high-pressure chamber, pressure chamber, The integrated sequence valve and the integrated one-way valve are communicated, and the integrated sequence valve and the integrated one-way valve are communicated with the pressurizing cavity.