CN208831381U - A kind of diaphragm type pressurizing cylinder - Google Patents

A kind of diaphragm type pressurizing cylinder Download PDF

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Publication number
CN208831381U
CN208831381U CN201821594813.8U CN201821594813U CN208831381U CN 208831381 U CN208831381 U CN 208831381U CN 201821594813 U CN201821594813 U CN 201821594813U CN 208831381 U CN208831381 U CN 208831381U
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CN
China
Prior art keywords
piston
oil
cylinder
cylinder barrel
cap
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Active
Application number
CN201821594813.8U
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Chinese (zh)
Inventor
梅晓宇
项福保
杜严庆
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Ningbo Yonghua Plastic Machinery Manufacturing Co Ltd
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Ningbo Yonghua Plastic Machinery Manufacturing Co Ltd
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Priority to CN201821594813.8U priority Critical patent/CN208831381U/en
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Abstract

The utility model relates to a kind of diaphragm type pressurizing cylinders, including cylinder barrel, end cap seal after one end of cylinder barrel, end cap seal before the other end, piston is equipped in cylinder barrel, and piston is arranged along the longitudinal direction, piston includes first piston portion and second piston portion interconnected, the peripheral wall and inner wall of cylinder abutting contact in first piston portion, the radical length in first piston portion is greater than the radical length in second piston portion, the oil sac for diaphragm is connected in cylinder barrel between first piston portion and drive end bearing bracket, perforation is connected with fliud flushing connector between the front end side and drive end bearing bracket of oil sac, the rear end side of oil sac is resisted against on the front end in first piston portion, second piston portion is fixed through rear end cap and with the moving template of mold.The utility model avoids the problem of oil leak caused by when mold is in open mold, reduces the impact injury between mold and oil cylinder, improves the service life of equipment.

Description

A kind of diaphragm type pressurizing cylinder
Technical field
The utility model relates to a kind of pressurizing cylinder more particularly to a kind of diaphragm type pressurizing cylinders.
Background technique
With the continuous improvement of China's industrialized level, more and more products are to the response speed of injection-moulding device and its steady It qualitatively requires higher.At present in die cylinder structure, since piston and cylinder barrel have gap, pull rod is that one end and piston connect It connects, the other end is in vacant state, this has resulted in the sagging of pull rod, increases the gap between piston and cylinder barrel, causes to leak Oil.Presently, alleviate leakage simply by the machining accuracy of the good sealing element of service performance and each component of raising mostly Degree.
Summary of the invention
Technical problem to be solved in the utility model is in view of the problems of the existing technology to provide one kind to can solve leakage The diaphragm type pressurizing cylinder of oily problem.
Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of diaphragm type pressurizing cylinder, including Cylinder barrel, the later end cap seal in one end of the cylinder barrel, the former end cap seal of the other end, the cylinder barrel is interior to be equipped with piston, and described Piston is arranged along the longitudinal direction, which is characterized in that the piston includes first piston portion and second piston portion interconnected, institute The peripheral wall and inner wall of cylinder abutting contact in first piston portion are stated, the radical length in the first piston portion is greater than second piston portion Radical length, the interior oil sac being connected between first piston portion and drive end bearing bracket for diaphragm of the cylinder barrel, the oil sac Perforation is connected with fliud flushing connector between front end side and drive end bearing bracket, and the rear end side of the oil sac is resisted against the front end in first piston portion On, the second piston portion is fixed through rear end cap and with the moving template of mold.
Further, the fliud flushing connector and oil sac junction are hydraulic fluid port, and the oil port is equipped with umbrella valve, the umbrella shape Valve closes hydraulic fluid port by spring, and the fliud flushing connector is for connecting oil pump.
Further, air cavity is formed between the second piston portion, rear end cap and cylinder barrel, the rear end cap is equipped with tonifying Qi Valve, the aeration valve are connected to air cavity.
Further, gas has been poured by aeration valve in advance in the air cavity.
Further, limit plate is fixedly connected between the rear end cap and the moving template of mold.
Compared with prior art, the beneficial effects of the utility model are as follows: the utility model forms diaphragm by oil sac, When mold clamping, high pressure oil is poured to oil sac by fliud flushing connector, to push piston by oil sac, realizes high-voltage lock mould The intracavitary gas of compressed gas simultaneously, in mold die sinking, by the promotion piston reset of compressed gas, so that piston press is oily Capsule passes through the diaphragm of oil sac formation the problem of being discharged by the oil in oil sac, avoid oil leak caused by when mold is in open mold Impact force when simultaneous buffering open mold, reduces the impact injury between mold and oil cylinder, and improve equipment uses the longevity Life.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of diaphragm type pressurizing cylinder of the utility model.
Fig. 2 is the cross-sectional view at the visual angle A-A in Fig. 1.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
As depicted in figs. 1 and 2: one end of a kind of diaphragm type pressurizing cylinder, including cylinder barrel 1, cylinder barrel 1 is sealed with rear end cap 2, The other end is with the sealing of drive end bearing bracket 3, and cylinder barrel 1 is interior to be equipped with piston 4, and piston 4 is arranged along the longitudinal direction, and piston 4 includes being connected with each other First piston portion 401 and second piston portion 402, the peripheral wall in first piston portion 401 and 1 inner wall abutting contact of cylinder barrel, first is living The radical length of piston part 401 is greater than the radical length in second piston portion 402, is located at first piston portion 401 and front end in cylinder barrel 1 The oil sac 5 for diaphragm is connected between lid 3, perforation is connected with fliud flushing connector 6 between the front end side and drive end bearing bracket 3 of oil sac 5, oil The rear end side of capsule 5 is resisted against on the front end in first piston portion 401, and second piston portion 402 is through rear end cap 2 and dynamic with mold 7 Template 701 is fixed.
Above-mentioned fliud flushing connector 6 and oil sac junction is hydraulic fluid port, and oil port is equipped with umbrella valve 8, and umbrella valve 8 passes through spring 9 Hydraulic fluid port is closed, fliud flushing connector 6 is for connecting high-pressure oil pump, when high-pressure oil pump pours into high pressure oil to fliud flushing connector 6, high pressure oil pressure Contracting spring 9, umbrella valve 8 are opened.
Air cavity 10 is formed between above-mentioned second piston portion 401, rear end cap 2 and cylinder barrel 1, rear end cap 2 is equipped with aeration valve 11, aeration valve 11 is connected to air cavity 10, and aeration valve 11 is connect with external gas tank, is inflated for controlling into air cavity 10.
High pressure gas has been poured in advance by aeration valve 11 in above-mentioned air cavity 10, has generallyd use nitrogen, when piston 4 backward When Fang Yidong, the gas in air cavity 10 is had compressed, generates the mode locking that High Voltage is used for mold 7.
Limit plate 12, the limit in the present embodiment are fixedly connected between the moving template 701 of above-mentioned rear end cap 2 and mold 7 Position plate 12 is fixed with piston 4 by multiple soket head cap screws 13, is determined by the anti-pressure ability of limit plate 12 into air cavity 10 The volume of gas injection.
The working principle of diaphragm type pressurizing cylinder provided in this embodiment is as follows: being poured in advance by aeration valve into air cavity The volume of certain gas, gas is controlled by the pressure that limit plate can be born, and when the die is closed, accesses high pressure by fliud flushing connector Oil, umbrella valve are opened, and high pressure oil enters oil sac, fill oil sac, and push piston, and by constantly injection high pressure oil to mold into Row mode locking, while having compressed the gas in air cavity;When fliud flushing connector stops input high pressure oil, under the action of compressed gas, Piston reset realizes die sinking, while the oil in oil sac is discharged.
The characteristics of the present embodiment, is as follows, during open mold, forms diaphragm by oil sac between high pressure oil and piston, makes High pressure oil is constantly between fliud flushing connector and oil sac, avoids the Leakage of high pressure oil.The diaphragm formed by oil sac is same When impact force when having buffered open mold, reduce the impact injury between mold and oil cylinder, improve the service life of equipment.
Above description is merely a prefered embodiment of the utility model, it is noted that for those of ordinary skill in the art For, under the premise of not departing from the principles of the present invention, a variety of remodeling or improvement can be carried out to the utility model, these are It is considered as within the protection scope of the utility model.

Claims (5)

1. a kind of diaphragm type pressurizing cylinder, including cylinder barrel, end cap seal, the other end are close with drive end bearing bracket later for one end of the cylinder barrel Envelope, the cylinder barrel is interior to be equipped with piston, and the piston is arranged along the longitudinal direction, which is characterized in that the piston includes mutually interconnecting The first piston portion and second piston portion connect, the peripheral wall and inner wall of cylinder abutting contact in the first piston portion, described first is living The radical length of piston part is greater than the radical length in second piston portion, connects between first piston portion and drive end bearing bracket in the cylinder barrel It is connected to the oil sac for diaphragm, perforation is connected with fliud flushing connector between the front end side and drive end bearing bracket of the oil sac, the oil sac Rear end side is resisted against on the front end in first piston portion, and the second piston portion is fixed through rear end cap and with the moving template of mold.
2. a kind of diaphragm type pressurizing cylinder as described in claim 1, which is characterized in that the fliud flushing connector and oil sac junction For hydraulic fluid port, the oil port is equipped with umbrella valve, and the umbrella valve closes hydraulic fluid port by spring, and the fliud flushing connector is for connecting oil Pump.
3. a kind of diaphragm type pressurizing cylinder as described in claim 1, which is characterized in that the second piston portion, rear end cap and Air cavity is formed between cylinder barrel, the rear end cap is equipped with aeration valve, and the aeration valve is connected to air cavity.
4. a kind of diaphragm type pressurizing cylinder as claimed in claim 3, which is characterized in that preparatory by aeration valve in the air cavity Gas is poured.
5. a kind of diaphragm type pressurizing cylinder as described in claim 1, which is characterized in that the moving template of the rear end cap and mold Between be fixedly connected with limit plate.
CN201821594813.8U 2018-09-28 2018-09-28 A kind of diaphragm type pressurizing cylinder Active CN208831381U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821594813.8U CN208831381U (en) 2018-09-28 2018-09-28 A kind of diaphragm type pressurizing cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821594813.8U CN208831381U (en) 2018-09-28 2018-09-28 A kind of diaphragm type pressurizing cylinder

Publications (1)

Publication Number Publication Date
CN208831381U true CN208831381U (en) 2019-05-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821594813.8U Active CN208831381U (en) 2018-09-28 2018-09-28 A kind of diaphragm type pressurizing cylinder

Country Status (1)

Country Link
CN (1) CN208831381U (en)

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