CN202741630U - Lifting overload protector applied to punch - Google Patents
Lifting overload protector applied to punch Download PDFInfo
- Publication number
- CN202741630U CN202741630U CN 201220475171 CN201220475171U CN202741630U CN 202741630 U CN202741630 U CN 202741630U CN 201220475171 CN201220475171 CN 201220475171 CN 201220475171 U CN201220475171 U CN 201220475171U CN 202741630 U CN202741630 U CN 202741630U
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- China
- Prior art keywords
- lifting
- pressure sensor
- hydraulic cylinder
- valve
- punch
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- Expired - Fee Related
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Abstract
The utility model discloses a lifting overload protector applied to a punch. The lifting overload protector comprises a solenoid valve (1), a hydraulic-control one-way valve (2), a throttle valve (3) and a lifting hydraulic cylinder (7) which are communicated in sequence. The lifting overload protector is characterized by further comprising a pressure sensor (4), wherein the pressure sensor (4) is connected on an oil inlet pipeline between the throttle valve (3) and the hydraulic cylinder (7) by a pipeline; and the pressure sensor (4) is connected with the solenoid valve (1) by a guide wire. Therefore, when oil pressure in the pipeline system is increased due to mould blockage, the pressure sensor detects the pressure increase, and then the solenoid valve is shut off, so that a continuous trolley lifting process of the punch is stopped, and the punch has a lifting overload protection function to protect the mould and avoid safety accidents.
Description
Technical field
The utility model relates to the machine tool technical field, specifically is a kind of for the lifting overload protection arrangement on the punch press.
Background technology
At present, in the use procedure of punch press, the needs of mould replacing trolley can often be arranged, will lift the ponderable mould of tool this moment, and this lifting is lifted mould by hydraulic coupling often.But, in the punch press lifting process of prior art, often have the jammed phenomenon of mould, the load force of lifting this moment is unusual the increase just, and hydraulic cylinder is still moving, therefore, and the up lifting while mould is stuck also, thereby cause the mould gross distortion, even can cause the generation of security incident.
The utility model content
Technical problem to be solved in the utility model is, provides a kind of load meeting of running into unusual increase in the lifting process of punch press automatically to stop lifting, thus the protection mould and avoid that security incident occurs be used for lifting overload protection arrangement on the punch press.
For solving the problems of the technologies described above; the utility model provides is used for lifting overload protection arrangement on the punch press; comprise the magnetic valve, hydraulic control one-way valve, choke valve and the lifting hydraulic cylinder that are communicated with successively; it also comprises pressure sensor; described pressure sensor is connected to by pipeline on the in-line of choke valve and hydraulic cylinder, and pressure sensor is connected with the magnetic valve wire.
After adopting above structure; the utility model is compared with technology is arranged; have the following advantages: owing in the in-line of choke valve and hydraulic cylinder, being connected pressure sensor; when in the system owing to mould is stuck when oil liquid pressure in the pipe-line system is increased; after detecting, pressure sensor make magnetic valve make power down process; thereby stop the continuation chassis lifting process of punch press, make punch press have the function of lifting overload protection, protect mould and avoid security incident to occur.
As improvement, be provided with the carry position sensor of the piston position that can detect in the lifting hydraulic cylinder and the position sensor of giving up the throne on the described lifting hydraulic cylinder, this carry position sensor all is connected with the magnetic valve wire with the position sensor of being connected.After adopting this structure, make the lifting of punch press and the equal limited location of giving up the throne, cooperate the effect of pressure sensor, make the lifting overload protection function of punch press better.
As further improvement, also be connected with stop valve and Pressure gauge in turn on the pipeline of described pressure sensor one end.After adopting this structure, the oil liquid pressure in the hydraulic cylinder in-line can be shown more intuitively from Pressure gauge.
Description of drawings
Accompanying drawing is the hydraulic schematic diagram that the utility model is used for the lifting overload protection arrangement on the punch press.
Wherein: 1, magnetic valve; 2, hydraulic control one-way valve; 3, choke valve; 4, pressure sensor; 5, stop valve; 6, Pressure gauge; 7, lifting hydraulic cylinder; 8, carry position sensor; 9, the position sensor of giving up the throne.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in more detail.
By the hydraulic schematic diagram for the lifting overload protection arrangement on the punch press shown in the drawings as can be known; it comprises magnetic valve 1, hydraulic control one-way valve 2, choke valve 3 and the lifting hydraulic cylinder 7 that is communicated with successively; it also comprises pressure sensor 4; described pressure sensor 4 is connected on the in-line between choke valve 3 and the hydraulic cylinder 7 by pipeline, and pressure sensor 4 is connected with magnetic valve 1 wire.In the present embodiment, magnetic valve 1 is the Y function magnetic valve of 3-position 4-way.
Be provided with the carry position sensor 8 of the piston position that can detect in the lifting hydraulic cylinder 7 and the position sensor 9 of giving up the throne on the described lifting hydraulic cylinder 7, this carry position sensor 8 all is connected with magnetic valve 1 wire with the position sensor 9 of being connected.
Also be connected with stop valve 5 and Pressure gauge 6 on the pipeline of described pressure sensor 4 one ends in turn.
Operation principle of the present utility model is:
Generally: the electromagnet energising in magnetic valve 1 left side, the work of corresponding left position, pressure oil is through entering the cavity of resorption of lifting hydraulic cylinder 7 behind P mouth, hydraulic control one-way valve 2 and the choke valve 3 of magnetic valve 1, piston and piston rod are risen, and this moment, the oil of lifting hydraulic cylinder 7 epicoeles passed through choke valve 3 oil returns simultaneously to the T mouth of magnetic valve 1.When carry position sensor 8 detects position signalling, represent that lifting has arrived when requiring the position, magnetic valve 1 outage returns meta.By the pressurize of hydraulic control one-way valve 2, make lifting hydraulic cylinder 7 keep the lifting state.In like manner, magnetic valve 1 right side electromagnet energising, the work of corresponding right position, pressure oil directly enters lifting hydraulic cylinder 7 epicoeles, and piston and piston rod are descended.
Under the overload situations: when the situation of clip and so in the lifting process occurs, directly cause lifting hydraulic cylinder 7 loads greater than rated value, at this moment, carry position sensor 8 not yet detects the lifting signal that puts in place, and pressure sensor 4 has detected abnormal pressure (greater than specified hydraulic pressure), the electromagnet outage in control magnetic valve 1 left side, and the right side electromagnet gets electric, make immediately backhaul of lifting hydraulic cylinder 7, thereby finish improper lifting.After the position sensor 9 of giving up the throne detects lifting hydraulic cylinder 7 rollbacks and puts in place, the right side electromagnet of the magnetic valve 1 recurrence meta that again cuts off the power supply.
Claims (3)
1. lifting overload protection arrangement that is used on the punch press; comprise the magnetic valve (1), hydraulic control one-way valve (2), choke valve (3) and the lifting hydraulic cylinder (7) that are communicated with successively; it is characterized in that: it also comprises pressure sensor (4); described pressure sensor (4) is connected on the in-line between choke valve (3) and the hydraulic cylinder (7) by pipeline, and pressure sensor (4) is connected with magnetic valve (1) wire.
2. according to claim 1 for the lifting overload protection arrangement on the punch press; it is characterized in that: be provided with the carry position sensor (8) that can detect the piston position in the lifting hydraulic cylinder (7) and the position sensor of giving up the throne (9) on the described lifting hydraulic cylinder (7), this carry position sensor (8) all is connected with magnetic valve (1) wire with the position sensor of being connected (9).
3. according to claim 1 for the lifting overload protection arrangement on the punch press, it is characterized in that: also be connected with stop valve (5) and Pressure gauge (6) on the pipeline of described pressure sensor (4) one ends in turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220475171 CN202741630U (en) | 2012-09-18 | 2012-09-18 | Lifting overload protector applied to punch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220475171 CN202741630U (en) | 2012-09-18 | 2012-09-18 | Lifting overload protector applied to punch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202741630U true CN202741630U (en) | 2013-02-20 |
Family
ID=47701078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220475171 Expired - Fee Related CN202741630U (en) | 2012-09-18 | 2012-09-18 | Lifting overload protector applied to punch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202741630U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111174889A (en) * | 2020-02-04 | 2020-05-19 | 中冶南方连铸技术工程有限责任公司 | Automatic casting blank weighing system and method |
-
2012
- 2012-09-18 CN CN 201220475171 patent/CN202741630U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111174889A (en) * | 2020-02-04 | 2020-05-19 | 中冶南方连铸技术工程有限责任公司 | Automatic casting blank weighing system and method |
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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: 20130220 Termination date: 20150918 |
|
| EXPY | Termination of patent right or utility model |