CN2477879Y

CN2477879Y - Acting valve of pneumatic auto feeder

Info

Publication number: CN2477879Y
Application number: CN 00228689
Authority: CN
Inventors: 张三连
Original assignee: YAOHUI GAS NAIL FACTORY XIHAI BEIJIAO TOWN SHUNDE CITY
Current assignee: YAOHUI GAS NAIL FACTORY XIHAI BEIJIAO TOWN SHUNDE CITY
Priority date: 2000-06-27
Filing date: 2000-06-27
Publication date: 2002-02-20
Anticipated expiration: 2010-06-27

Abstract

A kind of operating valve in pneumatic automatic feeding systems, which is an instruction part used for control over the switching of air paths and enabling the piston of the feed valve to perform reciprocating movements, comprising a valve body, a cylinder sleeve, a piston, various sealing parts, a sealing cover, a retaining ring, an air intake/exhaust path, a speed-governing air path and a speed-governing screw rod etc, wherein the cylinder sleeve applies an overall two-position four-way structure with ring groove air path diversion; the cylinder sleeve and the valve body are loosely fitted; the piston applies a double-guide overall structure with air exhaust holes, and the valve body applies a structure with exhaust slots. The utility model is characterized by high exhaust volume, smooth exhaust, high frequency of reciprocating movements and excellent guiding performances.

Description

Pneumatic auto-feeder operating valve

The utility model relates to the operating valve of the auto-feeder of a kind of selector valve, particularly a kind of pneumatic system.

Pneumatic auto-feeder is a hydraulic press, the self-feeding parts that automatic puncher is essential, its pneumatic principle comprises by feed valve, fixes to clamp valve, operating valve, activity pinched valve solenoid directional control valve and compressed air gas source, often open gas circuit, the system that normally-open normally-close air inlet gas circuit that the air inlet of normally-open normally-close and exhaust gas circuit, operating valve communicate with the feed valve reseting cavity and exhaust gas circuit etc. are partly formed.And operating valve wherein is mandatory parts in this body, and its major function is a control change feed valve gas circuit, makes the feed valve reciprocating motion of the pistons.These parts are formed (see figure 1) by parts such as Sealing, valve body, back-up ring, sealing cover, valve barrel cover, upper piston and lower pistons.But because the defective on the structural design, existing operating valve exists air displacement little at aspect of performance, and guidance quality is poor during piston motion, the shortcoming that reciprocating frequency is not high; Aspect processing technology, because the sealing between cylinder sleeve and the valve body is that pressured cooperation realizes, the result is a poor sealing performance, and assembling, loading and unloading difficulty are not easy to maintenance, and gas circuit is made difficulty by cooperating processing; Big to the receptance of source of the gas humidity, turbidity test, cause action dumb.

The purpose of this utility model is to avoid the deficiencies in the prior art part and provides a kind of air displacement big, reciprocating frequency height, good seal performance, the operating valve of parts feeder easy to manufacture, easy to maintenance, that speed governing is balanced.

The working principle of parts feeder is such: when solenoid directional control valve commutation air inlet position (connecting with the source of the gas gas circuit), the operating valve piston down moves, cut-out operating valve and speed governing gas circuit enter the source of the gas of feed valve reseting cavity, the feed valve reseting cavity is by the speed governing gas circuit, operating valve piston relief opening is discharged gas, fixing to clamp valve normally-open normally-close gas circuit and source of the gas simultaneously connects, fixing to clamp the rising of valve drive pressing plate unclamps material, activity pinched valve normally-open normally-close gas circuit is also connected with source of the gas, movable clamping valve piston drives the die pad rising material is clamped, and feed valve drive activity pinched valve begins feeding forward.When feed valve arrives the regulation feeding position, when electromagnetic inductor impels solenoid directional control valve commutation exhaust position, the operating valve piston up moves, connect and often to open the source of the gas that gas circuit and speed governing gas circuit enter the feed valve reseting cavity, the exhaust gas circuit that fixes to clamp the valve normally-open normally-close is simultaneously connected, fix to clamp valve piston under the effect of often opening the gas circuit bleed pressure, driving pressing plate decline clamps object, activity pinched valve normally-open normally-close exhaust gas circuit is also connected, the movable valve piston that clamps is under the effect of spring, driving die pad decline unclamps material, the feed valve piston is under the effect of often opening gas circuit source of the gas pressure reduction, drive activity pinched valve begins to reset backward, when feed valve reset to assigned position, electromagnetic inductor impelled solenoid directional control valve to arrive commutation air inlet position, repeats front working procedure periodic duty.Operating valve wherein is an important components.

Operating valve structure of the present utility model is achieved in that

The utility model operating valve is by valve body 1, cylinder sleeve 2, liner packing spare 3, piston 4, piston upper chamber Sealing 5, piston cavity of resorption Sealing 6, speed adjustment screw 7, speed adjustment screw Sealing 8, operating valve sealing cover 9, sealing cover Sealing 10, ring washer 11, gas circuit sealing plug screw 12, and speed governing gas circuit 13, operating valve is often opened gas circuit 14, operating valve normally-open normally-close gas circuit 15, (its radially figure with 15 ' expression,) fix to clamp valve normally-open normally-close gas circuit 16, (its radially figure with 16 ' expression) waits partly and forms, and wherein the structure of each part is shown in each accompanying drawing.

The cylinder sleeve of the utility model operating valve adopts two-position four-way annular groove gas circuit shunting overall structure, that is to say that each gas circuit can only be passed through corresponding annular groove, and pore carries out work; Operating valve cylinder sleeve and valve body adopt Spielpassung, the sealing of O shape rubber seal; Piston adopts the overall structure of two guidance tape exhaust ports; Valve body adopts band exhaust breach (replacing former exhaust port) structure; Sealing cover adopts band frustum plank frame; Speed adjustment screw adopts band seal groove vertex of a cone acicular structure.

The utility model operating valve has following advantage:

1, easy to manufacture, load and unload easy to maintenance, good seal performance, and do not have axial float;

2, owing to adopt annular groove shunting overall structure, exhaust is unimpeded, and air displacement is big, the reciprocating frequency height;

3, owing to adopt the overall structure of two guidance tape exhaust ports, steering capability is good, and coordination has overcome the influence to its operating sensitivity of source of the gas humidity, turbidity test, has reduced by an exhaust gas circuit.

4, adopt band exhaust breach (replacing former exhaust port) structure, leaving area is big.

5, owing to adopt band seal groove vertex of a cone acicular structure, speed governing equilibrium, convenience.

Description of drawings: Fig. 1 is the structure erection drawing of the operating valve of prior art, Fig. 2 is the plan view (part is analysed and observe) of the utility model operating valve, Fig. 3 is the A-A sectional view of this operating valve, Fig. 4 is its B-B sectional view, Fig. 5 is a kind of structure of piston figure of operating valve, Fig. 6 is its side view, Fig. 7 is an operating valve cylinder sleeve structural drawing, Fig. 8 is its side view, Fig. 9 is the plan view (part is analysed and observe) of valve body, and Figure 10 is its A-A sectional view, and Figure 11 is its B-B sectional view, Figure 12 is an operating valve sealing cover structural drawing, Figure 13 be its A to view, Figure 14 is the speed adjustment screw structural drawing, Figure 15 is its side view, Figure 16 is a kind of operating valve piston structure figure with boss, and Figure 17 is its side view.

Embodiment: comprise valve body 1 as accompanying drawing 2, Fig. 3, structure manufacturing shown in Figure 4, operating valve cylinder sleeve 2, the operating valve of the pneumatic auto-feeder of piston 4 critical pieces such as grade.Operating valve cylinder sleeve 2 wherein is shown in Figure 8 as Fig. 7, adopt two-position four-way annular groove gas circuit shunting overall structure, be provided with the annular groove and the gas circuit groove thereof of 4 dress O shape rubber seal at cylinder sleeve cylindrical position, wherein 3 annular gas channel troughed belts have pore, and 1 the annular gas channel groove in bottom does not have pore; Pore by 1 the annular gas channel groove in top communicates with the top pore, and the pore of all the other 2 annular gas channel grooves communicates with the interior step through hole.Like this, each air-flow can only carry out work by corresponding annular groove, pore.Adopt Spielpassung between this cylinder sleeve 2 and the valve body 1, the liner packing spare of making of O shape rubber ring 3 seals; And adopt end face seal between cylinder sleeve 2 and the sealing cover 9, in the circle of the Sealing 10 of sealing cover, leave the inlet and outlet gap; Sealing cover Sealing 10 and ring washer 11 that the axial restraint of cylinder sleeve is made by the O shape rubber ring that certain decrement is arranged fix, and have avoided axial float.Above-mentioned sealing cover 9 adopts band frustum plank frame shown in Figure 12,13, it is all convenient to make, load and unload, keep in repair.

Above-mentioned valve body 1 adopts band exhaust breach structure shown in Fig. 9,10,11, the direct and operating valve piston exhaust port of this breach, and speed governing gas circuit 13 links to each other, and has replaced exhaust port, has strengthened leaving area.

Above-mentioned operating valve piston 4 as Fig. 5,6 and Figure 16,17 shown in, adopt the overall structure of two guidance tape exhaust ports, two way sealed (seeing piston upper chamber Sealing 5) is adopted on piston top, adopts one-way sealing (seeing piston cavity of resorption Sealing 6) to fuse with the piston bottom; Adapt with the annular groove gas circuit shunt structure of cylinder sleeve, piston is a CONCENTRIC REDUCER overall structure that is connected by small column, and there is the annular groove of 2 dress O shape rubber seal at major part cylindrical position.Article two, an annular gas channel groove is arranged between the groove, have pore to communicate in the groove with endoporus (exhaust port); The microcephaly holds the cylindrical position that the annular groove of a dress O shape rubber seal is arranged; Connect in the small column between the CONCENTRIC REDUCER cylindrical, have an endoporus and major part cylindrical annular gas channel groove pore to communicate.Air-flow can be discharged by the exhaust port of the annular groove gas circuit pore between the two way sealed groove of piston top, and air displacement is big, and exhaust is unimpeded, has reduced the suffered interference of action sensitivity.Shown in Figure 5 is that top, a kind of major part cylindrical position is the piston of a flat-top, and shown in Figure 16 be the piston of top band one boss.

On this operating valve body except offering the normally-open normally-close gas circuit 15 of air inlet, with often opening outside the gas circuit 14 of air inlet, also be provided with speed governing gas circuit 13, speed adjustment screw 7 and speed adjustment screw Sealing 8 are arranged on the gas circuit, cross this speed governing gas circuit 13 by speed governing from the air communication that the feed valve reseting cavity of system is come, through the operating valve inner chamber, discharge from the piston exhaust port.This adjusting screw rod adopts band seal groove vertex of a cone acicular structure shown in Fig. 2 and Figure 14,15, make speed governing equilibrium, convenience.

On valve body, also be provided with and fix to clamp valve normally-open normally-close gas circuit 16; At the gas circuit the other end that is communicated with cylinder sleeve, come shutoff with gas circuit sealing plug screw 12.

Claims

1, a kind of pneumatic auto-feeder operating valve, by valve body (1), operating valve cylinder sleeve (2), liner packing spare (3), operating valve piston (4), piston upper chamber Sealing (5), piston cavity of resorption Sealing (6), operating valve sealing cover (9), sealing cover Sealing (10), ring washer (11) is formed, what offer the normally-open normally-close gas circuit (15) of air inlet and air inlet on valve body often opens gas circuit (14), it is characterized in that, also be provided with on the valve body and fix to clamp valve normally-open normally-close gas circuit (16) and speed governing gas circuit (13), speed adjustment screw (7) and Sealing (8) thereof are arranged on the speed governing gas circuit.

2, pneumatic auto-feeder operating valve according to claim 1 is characterized in that, operating valve cylinder sleeve (2) adopts two-position four-way annular groove gas circuit shunting overall structure; Adopt Spielpassung between operating valve cylinder sleeve (2) and the valve body (1), seal with liner packing spare (3).

3, pneumatic auto-feeder operating valve according to claim 1 is characterized in that, operating valve piston (4) adopts the overall structure of two guidance tape exhaust ports, and piston top adopts two way sealed and piston bottom to adopt one-way sealing to fuse.

4, pneumatic auto-feeder operating valve according to claim 1 is characterized in that, valve body (1) adopts band exhaust breach structure, and this breach is directly often opened gas circuit (14) with operating valve and linked to each other.

5, pneumatic auto-feeder operating valve according to claim 1 is characterized in that, operating valve sealing cover (9) adopts band frustum plank frame; Adopt end face seal between sealing cover (9) and the cylinder sleeve (2), in the circle of the Sealing (10) of sealing cover, leave the inlet and outlet gap.

6, pneumatic auto-feeder operating valve according to claim 2, it is characterized in that, cylinder sleeve (2) cylindrical position is provided with the annular groove and the gas circuit grooves thereof of 4 dress O shape rubber seal, and wherein 3 annular gas channel troughed belts have pore, and 1 pore in 3 communicates with the top pore; All the other pores of 2 communicate with the interior step through hole.

7, according to claim 1 or 3 described pneumatic auto-feeder operating valves, it is characterized in that, operating valve piston (4) is one and constitutes overall structure by major part and microcephaly and small column therebetween, there are 2 annular grooves at major part cylindrical position, article two, 1 gas circuit groove is arranged between the groove, in the middle of inflate the hole and communicate with exhaust port; There is an annular groove at microcephaly's cylindrical position; There is an endoporus to communicate in the small column with the pore of major part microcephaly annular groove.

8, pneumatic auto-feeder operating valve according to claim 7 is characterized in that, piston (4) top has a boss.

9, pneumatic auto-feeder operating valve according to claim 1 is characterized in that, at an end of speed governing gas circuit (13), seals plug screw (12) with gas circuit and comes shutoff.