CN201721052U - Driving mechanism for lower jacking rod of pressing machine - Google Patents

Driving mechanism for lower jacking rod of pressing machine Download PDF

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Publication number
CN201721052U
CN201721052U CN2010202705324U CN201020270532U CN201721052U CN 201721052 U CN201721052 U CN 201721052U CN 2010202705324 U CN2010202705324 U CN 2010202705324U CN 201020270532 U CN201020270532 U CN 201020270532U CN 201721052 U CN201721052 U CN 201721052U
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CN
China
Prior art keywords
piston
cylinder
air
driving
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2010202705324U
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Chinese (zh)
Inventor
郑耀强
周斌
陈鲤勇
薛卫平
高盛康
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Aichi Forging Co Ltd
Original Assignee
Shanghai Aichi Forging Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Aichi Forging Co Ltd filed Critical Shanghai Aichi Forging Co Ltd
Priority to CN2010202705324U priority Critical patent/CN201721052U/en
Application granted granted Critical
Publication of CN201721052U publication Critical patent/CN201721052U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a driving mechanism for a lower jacking rod of a pressing machine. The driving mechanism comprises an air cylinder, a spherical valve, a filter, a reducing valve and a gas storage tank, wherein the spherical valve, the filter, the reducing valve and the gas storage tank are connected in sequence; a piston and a piston rod are arranged in the air cylinder, and the piston rod is in bolted connection with the upper end of the piston; an air inlet is formed at the lower part of one side wall of the air cylinder, and an air outlet is formed in the middle of the other side wall of the air cylinder; the stroke of the piston in the air cylinder is from the upper part of the air inlet to the lower part of the air outlet; the air inlet of the air cylinder is communicated with the air outlet of an electromagnetic directional valve through an pipeline; an air inlet of the electromagnetic directional valve is communicated with the gas storage tank through the pipeline; and an air outlet of the air cylinder is connected with an adjustable check valve. The driving mechanism for the lower jacking rod of the pressing machine can greatly reduce the impact of the piston and the vibration of the workpiece, so that all the connecting parts in the driving mechanism have the low probability of damage.

Description

A kind of driving mechanism of forcing press lower push rod
Technical field
The utility model relates to a kind of driving mechanism of forcing press lower push rod.
Background technology
The lower push rod driving mechanism of forcing press is that the compressed air that utilizes compressed air pump to provide enters cylinder through magnetic valve, driving piston drive moves upward piston rod formation to piston rod, thereby the formation impulse force makes workpiece produce the distortion of regulation in mould and reaches the purpose of processing.In the normal production of 1600 tons of forcing presses, the pressure that moulding is required and the pressure of cylinder often do not match, be that two pistons 11 that are connected to the upper end and the bottom of piston rod 10 are arranged in the cylinder 1,12 drive, and an air inlet 13 is offered at top and middle part at cylinder wall respectively, 14, these two air inlets 13,14 are communicated with air accumulator 3 by solenoid directional control valve 2 respectively, middle part and bottom at cylinder wall are offered a gas outlet 15 respectively, 16, two gas outlets 15,16 directly lead to (see figure 1) in the air with gas, and the pressure that makes cylinder 1 is greater than the required impulsive force of mould molding.Because the pressure of cylinder 1 is excessive, the moment of punching press piston rod 10 be subjected to huge impact power, and Workpiece vibration is increased, cause that the connecting bolt of piston 11,12 and piston rod 10 and the damage phenomenon of nut increase (see figure 2), the guide post of related piston also fractures, and keep in repair once just needs the about 40H/ people of flower maintenance man-hours.
Summary of the invention
The purpose of this utility model is in order to overcome the defective of prior art, a kind of driving mechanism of forcing press lower push rod to be provided, and it can reduce the impulsive force of piston and the vibration of workpiece greatly, and connectors all in the mechanism is all damaged no longer easily.
The technical scheme that realizes above-mentioned purpose is: a kind of driving mechanism of forcing press lower push rod, comprise cylinder and the ball valve, filter, pressure-reducing valve and the air accumulator that connect successively, be provided with a piston in the described cylinder and reach the piston rod that is connected the piston upper end by bolt, wherein
An air inlet is offered in the bottom of one side wall surface of described cylinder, and a gas outlet is offered at the middle part of the opposite side wall of described cylinder, and the stroke of described piston in cylinder is between below above the described air inlet and the described gas outlet;
The air inlet of described cylinder is by the gas outlet of pipeline connection to a solenoid directional control valve, and the air inlet of this solenoid directional control valve arrives air accumulator by pipeline connection;
The gas outlet of described cylinder connects an adjustable return-air valve.
The driving mechanism of above-mentioned forcing press lower push rod, wherein, described solenoid directional control valve also is provided with an oil sprayer and a safety valve to the pipeline between the described air accumulator.
The technical scheme of the driving mechanism of forcing press lower push rod of the present utility model changes the double-piston in the cylinder into single piston; Change down upper and lower air inlet into air inlet one tunnel, the own wt of utilization of homeward voyage piston and piston rod is descending; When up, set up adjustable return-air valve, increased the back pressure of piston in the gas outlet; Under the condition of satisfy producing, the impulsive force of coming control piston with back pressure, and thereby reduced the vibration of workpiece, connectors all in the mechanism is all damaged no longer easily.
Description of drawings
Fig. 1 is the structural representation of driving mechanism of the forcing press lower push rod of prior art;
Fig. 2 is the profile of cylinder in the driving mechanism of forcing press lower push rod of prior art;
Fig. 3 is the structural representation of the driving mechanism of forcing press lower push rod of the present utility model;
Fig. 4 is the profile of cylinder in the driving mechanism of forcing press lower push rod of the present utility model.
The specific embodiment
In order to understand the technical solution of the utility model better, also be described in detail in conjunction with the accompanying drawings below by specific embodiment:
See also Fig. 3 and Fig. 4, the driving mechanism of forcing press lower push rod of the present utility model comprises cylinder 1 and the ball valve 5, filter 6, pressure-reducing valve 7 and the air accumulator 3 that connect successively.
Be provided with a piston 11 in the cylinder 1 and reach the piston rod 10 that is connected piston 11 upper ends by bolt; An air inlet 13 is offered in the bottom of one side wall surface of cylinder 1, and a gas outlet 16 is offered at the middle part of the opposite side wall of cylinder 1, and the stroke of piston 11 in cylinder 1 is between below above the air inlet 13 and gas outlet 16;
The air inlet 13 of cylinder 1 is by the gas outlet of pipeline connection to a solenoid directional control valve 2, and the air inlet of this solenoid directional control valve 2 arrives air accumulator 3 by pipeline connection;
The gas outlet 16 of cylinder 1 connects an adjustable return-air valve 8;
Solenoid directional control valve 2 also is provided with an oil sprayer 21 and a safety valve 22 to the pipeline between the air accumulator 3.
The operation principle of the driving mechanism of forcing press lower push rod of the present utility model is:
Change the double-piston in original cylinder into single piston, change down the upper and lower two-way air inlet on original cylinder into air inlet one tunnel simultaneously, pressure when only providing piston stroking upward, backhaul then utilizes the own wt of piston and piston rod descending, and when piston stroking upward, owing to set up adjustable return-air valve in the gas outlet, therefore increased the back pressure of piston, satisfying under the condition of producing, come the impulsive force of control piston with back pressure, thereby eliminated the vibration force of common part, connectors all in the mechanism is all damaged no longer easily.In this case, may reduce and shut down more than 200 hours, reduce about the about 450H/ people of maintenance man-hours.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Claims (2)

1. the pneumatic mechanism of a forcing press lower push rod comprises cylinder and the ball valve, filter, pressure-reducing valve and the air accumulator that connect successively, is provided with a piston in the described cylinder and reaches the piston rod that is connected the piston upper end by bolt, it is characterized in that,
An air inlet is offered in the bottom of one side wall surface of described cylinder, and a gas outlet is offered at the middle part of the opposite side wall of described cylinder, and the stroke of described piston in cylinder is between below above the described air inlet and the described gas outlet;
The air inlet of described cylinder is by the gas outlet of pipeline connection to a solenoid directional control valve, and the air inlet of this solenoid directional control valve arrives air accumulator by pipeline connection;
The gas outlet of described cylinder connects an adjustable return-air valve.
2. the driving mechanism of forcing press lower push rod according to claim 1 is characterized in that, described solenoid directional control valve also is provided with an oil sprayer and a safety valve to the pipeline between the described air accumulator.
CN2010202705324U 2010-07-26 2010-07-26 Driving mechanism for lower jacking rod of pressing machine Expired - Lifetime CN201721052U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202705324U CN201721052U (en) 2010-07-26 2010-07-26 Driving mechanism for lower jacking rod of pressing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202705324U CN201721052U (en) 2010-07-26 2010-07-26 Driving mechanism for lower jacking rod of pressing machine

Publications (1)

Publication Number Publication Date
CN201721052U true CN201721052U (en) 2011-01-26

Family

ID=43489343

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202705324U Expired - Lifetime CN201721052U (en) 2010-07-26 2010-07-26 Driving mechanism for lower jacking rod of pressing machine

Country Status (1)

Country Link
CN (1) CN201721052U (en)

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Granted publication date: 20110126