CN202963044U - Pushing device of perforating machine - Google Patents
Pushing device of perforating machine Download PDFInfo
- Publication number
- CN202963044U CN202963044U CN 201220611880 CN201220611880U CN202963044U CN 202963044 U CN202963044 U CN 202963044U CN 201220611880 CN201220611880 CN 201220611880 CN 201220611880 U CN201220611880 U CN 201220611880U CN 202963044 U CN202963044 U CN 202963044U
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- China
- Prior art keywords
- valve
- way
- rod
- cylinder
- compressed air
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- Expired - Fee Related
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Abstract
The utility model relates to a pushing device of a perforating machine in the field of a seamless steel pipe machining device, and the pushing device comprises a reversing valve and a two-way air cylinder, an extension end of a piston rod of the two-way air cylinder is connected with a pushing rod, the reversing valve is a three-position four-way valve, the three-position four-way valve comprises a compressed air inlet, two working ports and a vent port, a rod cavity of the two-way air cylinder is connected with one of the two working ports, the compressed air inlet is connected with a compressed air source, and the vent port is communicated with the atmosphere; and a check valve and a throttling valve, which are mutually connected with one another, are arranged between a rod-free cavity of the two-way air cylinder and the rest working port, and an outlet end of the check valve is connected with the rod-free cavity of the two-way air cylinder. When a piston is returned, air enters the rod cavity of the two-way air cylinder, air is discharged from the rod-free cavity, the check valve is closed, the air in the rod-free cavity can be only slowly discharged through the throttling valve so as to buffer the impact force when the piston is returned, the cylinder bottom is prevented from being stricken by large force, and the device is more reliable to use.
Description
Technical field
The utility model relates to a kind of seamless steel pipe process equipment, particularly the material-pulling device on a kind of punch.
Background technology
in existing seamless steel tube production technology, a kind of punch is arranged, this punch is provided with material-pulling device, this material-pulling device includes two-way cylinder, the piston rod external part of two-way cylinder is connected with charging ram, this device also includes reversal valve, reversal valve is three-position four-way valve, this three-position four-way valve comprises a compressed air inlet, two working interfaces and an exhaust outlet, the rod chamber of two-way cylinder and rodless cavity connect respectively two working interfaces of reversal valve, the compressed air inlet of reversal valve connects compressed air gas source, exhaust outlet is connected atmosphere, during work, to burn red round steel by charging ram and push the punching machine processing of boring a hole, after propelling movement is completed, piston rod is return.During this device work, have than hyperbar with than air volume when requiring cylinder to push, workpiece could be promoted, but when backward stroke of the piston, owing to being unloaded, usually that the rear end caping of cylinder is bad, have a strong impact on operating efficiency.
The utility model content
The purpose of this utility model is to provide a kind of material-pulling device of punch, can avoid clashing into cylinder bottom when the cylinder zero load is return, and guarantees that cylinder operation is reliable.
The purpose of this utility model is achieved in that a kind of punch material-pulling device, comprise reversal valve and two-way cylinder, the piston rod external part of two-way cylinder is connected with charging ram, described reversal valve is three-position four-way valve, this three-position four-way valve comprises a compressed air inlet, two working interfaces and an exhaust outlet, the rod chamber of two-way cylinder connects any in described two working interfaces, and compressed air inlet connects compressed air gas source, and exhaust outlet is connected atmosphere; Be provided with check valve parallel with one another and choke valve between the rodless cavity of two-way cylinder and a remaining working interface, the port of export of described check valve is connected with the rodless cavity of two-way cylinder.
The utility model when work, by reversal valve, can be with the compressed air of source of the gas through check valve, simultaneously through the rodless cavity air feed of choke valve to cylinder, the rod chamber of cylinder to atmospheric exhaust, can be pushed to workpiece the punch processing of boring a hole by reversal valve.During backward stroke of the piston, the rod chamber air inlet of two-way cylinder, the rodless cavity exhaust, the gas in closed check valve, rodless cavity can only slowly be discharged by choke valve, has cushioned the impulsive force when piston is return, and guarantees that it can not clash into cylinder bottom energetically, device is used more reliable.Compared with prior art, the beneficial effects of the utility model are: this device can avoid clashing into cylinder bottom when the cylinder zero load is return, and guarantees that cylinder operation is reliable.
As further improvement of the utility model, the flow area of described choke valve is 10～50% of check valve flow area.Can guarantee that in this scope piston rod has the enough speed of returning, and can guarantee again can not clash into cylinder bottom.Guaranteed production efficiency.
Description of drawings
Fig. 1 is the utility model fundamental diagram.
Wherein, 1 two-way cylinder, 2 check valves, 3 choke valves, 4 reversal valves, 5 compressed air gas sources, 6 charging rams.
The specific embodiment
As shown in the figure, be the punch material-pulling device, comprise reversal valve 4 and two-way cylinder 1, the piston rod external part of two-way cylinder 1 is connected with charging ram 6, described reversal valve 4 is three-position four-way valve, and this three-position four-way valve comprises a compressed air inlet P, two working interface I, O and an exhaust outlet T, and the rod chamber of two-way cylinder 1 connects working interface O, compressed air inlet P connects compressed air gas source 5, and exhaust outlet T connects atmosphere; Be provided with check valve parallel with one another 2 and choke valve 3 between the rodless cavity of two-way cylinder 1 and working interface I, the port of export of check valve 2 is connected with the rodless cavity of two-way cylinder; The flow area of choke valve 3 is 10～50% of check valve 2 flow areas.
During work, reversal valve has three stations, and respectively corresponding piston rod is released, piston rod keeps motionless, three kinds of duties of piston rod retraction.When working interface I communicated with compressed air inlet P, the rodless cavity air feed that check valve 2 is opened to two-way cylinder 1 was simultaneously also by the rodless cavity air feed of choke valve 2 to two-way cylinder 1, the rod chamber of two-way cylinder is connected atmosphere, at this moment, can push workpiece and advance, carry out feeding.When reversal valve is positioned at meta, the whole remain offs of working interface P, O, two-way cylinder 1 is in blocking, and it is motionless that piston rod keeps.When working interface O connects source of the gas, working interface P connects atmosphere, the rod chamber air inlet of two-way cylinder 1, the rodless cavity exhaust, because check valve 1 is closed, the gas in rodless cavity can only slowly be discharged by choke valve 2, has cushioned the impulsive force when piston is return, guarantee that it can not clash into cylinder bottom energetically, device is used more reliable.
The utility model is not limited to above-described embodiment; on the basis of the disclosed technical scheme of the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection domain of the present utility model.
Claims (2)
1. punch material-pulling device, comprise reversal valve and two-way cylinder, the piston rod external part of two-way cylinder is connected with charging ram, described reversal valve is three-position four-way valve, this three-position four-way valve comprises a compressed air inlet, two working interfaces and an exhaust outlet, the rod chamber of two-way cylinder connects any in described two working interfaces, and compressed air inlet connects compressed air gas source, and exhaust outlet is connected atmosphere; It is characterized in that: be provided with check valve parallel with one another and choke valve between the rodless cavity of two-way cylinder and a remaining working interface, the port of export of described check valve is connected with the rodless cavity of two-way cylinder.
2. punch material-pulling device according to claim 1, it is characterized in that: the flow area of described choke valve is 10～50% of check valve flow area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220611880 CN202963044U (en) | 2012-11-19 | 2012-11-19 | Pushing device of perforating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220611880 CN202963044U (en) | 2012-11-19 | 2012-11-19 | Pushing device of perforating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202963044U true CN202963044U (en) | 2013-06-05 |
Family
ID=48504174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220611880 Expired - Fee Related CN202963044U (en) | 2012-11-19 | 2012-11-19 | Pushing device of perforating machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202963044U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978248A (en) * | 2014-05-30 | 2014-08-13 | 苏州市富尔达科技股份有限公司 | Deep hole drill |
-
2012
- 2012-11-19 CN CN 201220611880 patent/CN202963044U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978248A (en) * | 2014-05-30 | 2014-08-13 | 苏州市富尔达科技股份有限公司 | Deep hole drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151119 |