CN2666659Y - Overload protector for press - Google Patents
Overload protector for press Download PDFInfo
- Publication number
- CN2666659Y CN2666659Y CN 200320123509 CN200320123509U CN2666659Y CN 2666659 Y CN2666659 Y CN 2666659Y CN 200320123509 CN200320123509 CN 200320123509 CN 200320123509 U CN200320123509 U CN 200320123509U CN 2666659 Y CN2666659 Y CN 2666659Y
- Authority
- CN
- China
- Prior art keywords
- side friction
- friction pulley
- press
- valve
- principal axis
- 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 - Fee Related
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Abstract
The utility model discloses a press overload protection device belonging to the press technology field and comprises a press main shaft, and a brake wheel, a left side friction wheel, a piston, an air cylinder which is matched with the piston, a right side friction wheel, a driven wheel and a flywheel which are sleeved in the press main shaft sequentially from left to right, wherein, the left side friction wheel and the right side friction wheel are connected by bonds and the press main shaft respectively; the external edge of the left side friction wheel is provided with a friction surface which is matched with the brake wheel, and the external edge of the right side friction wheel is provided with a friction surface which is matched with the driven wheel; the brake wheel is relatively fixed with the press body, the flywheel is fixedly connected with the driven wheel; bearings are arranged between the flywheel and the press main shaft, a reset spring is arranged between the air cylinder and the driven wheel; a compressed air cavity is arranged between the piston and the air cylinder and is communicated with an air channel which is arranged on the press main shaft. The utility model provides reliable overload protection for a press and is low in manufacturing cost.
Description
Technical field
The utility model relates to a kind of forcing press safety guard, belongs to the press technologies field.
Background technology
In the prior art, the overload protection of forcing press generally adopts hydraulic pressure overload protective or rigidity overload protection, when adopting hydraulic pressure overload protective, on the forcing press pressure-bearing surface, oil cylinder is set, when forcing press transships, oil cylinder is opened draining outward, and in-oil cylinder piston moves downward, and reaches the purpose of protection forcing press; When adopting the rigidity overload protection, on the forcing press pressure-bearing surface breaker is set, when forcing press transshipped, breaker was collapsed by pressure, reached the purpose of protection forcing press; These two kinds of protection schemes all have its weak point, adopt hydraulic pressure overload protective device, cost an arm and a leg; When adopting the rigidity overload protection, the press ram volume ratio is bigger, and the breaker cut-out power when collapsing of pressing can't be regulated.
The utility model content
The purpose of this utility model provides a kind of pressure machine overloading protection device, makes its low cost of manufacture, can provide reliably protecting to forcing press.
The purpose of this utility model is achieved in that a kind of pressure machine overloading protection device; comprise principal axis of pressing machine; and be socketed in braked wheel on the principal axis of pressing machine from left to right successively; the left side friction pulley; piston; cylinder; the right side friction pulley; driven pulley and flywheel; the left side friction pulley is connected with principal axis of pressing machine by key respectively with the right side friction pulley; described piston and cylinder match; the outward flange of left side friction pulley is provided with the rubbing surface that matches with braked wheel; the outward flange of right side friction pulley is provided with the rubbing surface that matches with driven pulley; braked wheel and press frame relative fixed; flywheel is fixedlyed connected with driven pulley; be provided with bearing between flywheel and the principal axis of pressing machine; back-moving spring is arranged between cylinder and the driven pulley; be provided with compressed air cell between described piston and the cylinder, principal axis of pressing machine is provided with air duct and is communicated with compressed air cell.
When work, flywheel is connected with power source, charge into compressed air to compressed air cell simultaneously, atmospheric pressure promote cylinder overcome spring force effect and along the principal axis of pressing machine axially-movable, the rubbing surface that promotes on right side friction pulley and the driven pulley compresses mutually, power source passes to principal axis of pressing machine by the right side friction pulley in the mode of frictional force with moment of torsion, the work of drive main shaft, when forcing press transships, frictional force between right side friction pulley and the driven pulley is not enough to drive the right side friction pulley and rotates, can skid between driven pulley and the right side friction pulley,, realize overload protection forcing press; When forcing press need stop, compressed air in the venting compressed air cell, the back-moving spring action, right side friction pulley and piston are separated, simultaneously, piston contacts with the left side friction pulley, and the rubbing surface that promotes on left side friction pulley and the braked wheel compresses mutually, utilizes the frictional force between left side friction pulley and the braked wheel that forcing press is braked.The utility model can just can accurately be regulated the setting value of overload action, thereby can provide reliable protection more to forcing press by the air pressure that feeds in the compressed air cell is controlled, and the utility model also provides a kind of forcing press power delivery mode simultaneously.
As the further improvement that originally is utility model, compressed air channel in the described compressed air cell connects the gas outlet of a triple valve by the road, the air inlet of triple valve connects the gas outlet of a two-position two-way solenoid valve, the 3rd passage of triple valve connected atmosphere, be parallel with an one-way throttle valve and a pressure-reducing valve on the turnover air pipe of two-position two-way solenoid valve, described one-way throttle valve and pressure-reducing valve are in series, and the air inlet of two-position two-way solenoid valve is connected source of the gas.
During the forcing press starting, with the two-position two-way solenoid valve energising, this valve air inlet and gas outlet are connected, the inlet, outlet of triple valve is connected, the high pressure air enters compressed air cell, and because of forcing press needs big frictional force when starting, this technical scheme can guarantee the forcing press normal starting; When operate as normal, need not needs bigger moment of torsion when starting, at this moment, the magnetic valve outage, intrasystem pressure is kept by pressure-reducing valve, during overload, can skid between driven pulley and the right side friction pulley, realizes overload protection; Because of forcing press needs frequent start-stop, connect the gas outlet of triple valve and atmosphere by the conversion of triple valve this moment, and air releases in the compressed air cell, the back-moving spring action, the forcing press braking, simultaneously, its air inlet ends, when the crossover tee valve makes its air inlet communicate with the gas outlet once more, piston moves to right, and the rubbing surface that promotes on right side friction pulley and the driven pulley compresses mutually, just can enter duty.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model pneumatic part fundamental diagram.
Wherein, 1 principal axis of pressing machine, 2 fuselages, 3 braked wheels, 4 left side friction pulleys, 5 pistons, 6 cylinders, 7 right side friction pulleys, 8 driven pulleys, 9 flywheels, 10 back-moving springs, 11 triple valves, 12 magnetic valves, 13 one-way throttle valves, 14 pressure-reducing valves, 15 low-voltage relays, 16 high-voltage relays, 17 air ducts.
The specific embodiment
As figure, pressure machine overloading protection device is mainly by principal axis of pressing machine 1, and be socketed in braked wheel 3 on the principal axis of pressing machine 1 from left to right successively, left side friction pulley 4, piston 5, cylinder 6, right side friction pulley 7, driven pulley 8 and flywheel 9, left side friction pulley 4 is connected with principal axis of pressing machine 1 by key respectively with right side friction pulley 7, described piston 5 and cylinder 6 match, the outward flange of left side friction pulley 4 is provided with the rubbing surface that matches with braked wheel 3, the outward flange of right side friction pulley 7 is provided with the rubbing surface that matches with driven pulley 8, braked wheel 3 and press frame 2 relative fixed, flywheel 9 is fixedlyed connected with driven pulley 8, be connected by bearing between flywheel 9 and the principal axis of pressing machine 1, back-moving spring 10 is arranged between cylinder 6 and the driven pulley 8, be provided with compressed air cell between described piston 5 and the cylinder 6, principal axis of pressing machine 1 is provided with air duct 17 and is communicated with compressed air cell; Described air duct 17 connects the gas outlet of a triple valve 11 by the road, the air inlet of triple valve 11 connects the gas outlet of a two-position two-way solenoid valve 12, the 3rd passage of triple valve 11 connected atmosphere, be parallel with an one-way throttle valve 13 and a pressure-reducing valve 14 on the turnover air pipe of two-position two-way solenoid valve 12, one-way throttle valve 13 and pressure-reducing valve 14 are in series, and the air inlet of two-position two-way solenoid valve 12 is connected source of the gas; Be provided with low-voltage relay 15 behind described one-way throttle valve 13 valves, be provided with high-voltage relay 16 behind the valve of triple valve 11, be unlikely to too high or too low with the control system air pressure.
Claims (2)
1; a kind of pressure machine overloading protection device; it is characterized in that: described pressure machine overloading protection device; comprise principal axis of pressing machine; and be socketed in braked wheel on the principal axis of pressing machine from left to right successively; the left side friction pulley; piston; cylinder; the right side friction pulley; driven pulley and flywheel; the left side friction pulley is connected with principal axis of pressing machine by key respectively with the right side friction pulley; described piston and cylinder match; the outward flange of left side friction pulley is provided with the rubbing surface that matches with braked wheel; the outward flange of right side friction pulley is provided with the rubbing surface that matches with driven pulley; braked wheel and press frame relative fixed; flywheel is fixedlyed connected with driven pulley; be provided with bearing between flywheel and the principal axis of pressing machine; back-moving spring is arranged between cylinder and the driven pulley; be provided with compressed air cell between described piston and the cylinder, principal axis of pressing machine is provided with air duct and is communicated with compressed air cell.
2, pressure machine overloading protection device according to claim 1; it is characterized in that: described air duct connects the gas outlet of a triple valve by the road; the air inlet of triple valve connects the gas outlet of a two-position two-way solenoid valve; the 3rd passage of triple valve connected atmosphere; be parallel with an one-way throttle valve and a pressure-reducing valve on the turnover air pipe of two-position two-way solenoid valve; described one-way throttle valve and pressure-reducing valve are in series, and the air inlet of two-position two-way solenoid valve is connected source of the gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320123509 CN2666659Y (en) | 2003-12-26 | 2003-12-26 | Overload protector for press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320123509 CN2666659Y (en) | 2003-12-26 | 2003-12-26 | Overload protector for press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2666659Y true CN2666659Y (en) | 2004-12-29 |
Family
ID=34348829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320123509 Expired - Fee Related CN2666659Y (en) | 2003-12-26 | 2003-12-26 | Overload protector for press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2666659Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602038A (en) * | 2012-03-07 | 2012-07-25 | 广东锻压机床厂有限公司 | Safety redundancy device of press and control method therefor |
| CN103317072A (en) * | 2013-06-26 | 2013-09-25 | 扬州锻压机床股份有限公司 | Heat forging press |
| CN109910357A (en) * | 2019-04-02 | 2019-06-21 | 应开法 | A kind of overload protection press machine |
-
2003
- 2003-12-26 CN CN 200320123509 patent/CN2666659Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602038A (en) * | 2012-03-07 | 2012-07-25 | 广东锻压机床厂有限公司 | Safety redundancy device of press and control method therefor |
| CN102602038B (en) * | 2012-03-07 | 2015-06-17 | 广东锻压机床厂有限公司 | Safety redundancy device of press and control method therefor |
| CN103317072A (en) * | 2013-06-26 | 2013-09-25 | 扬州锻压机床股份有限公司 | Heat forging press |
| CN109910357A (en) * | 2019-04-02 | 2019-06-21 | 应开法 | A kind of overload protection press machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |