CN201889772U

CN201889772U - Pneumatic hammer

Info

Publication number: CN201889772U
Application number: CN2010205309004U
Authority: CN
Inventors: 温庆普
Original assignee: SUZHOU ZHUOSHI BUSINESS CONSULTATION CO Ltd
Current assignee: SUZHOU ZHUOSHI BUSINESS CONSULTATION CO Ltd
Priority date: 2010-09-15
Filing date: 2010-09-15
Publication date: 2011-07-06
Anticipated expiration: 2020-09-15

Abstract

The utility model discloses a pneumatic hammer, comprising an air supply device, a gas cylinder, a piston, a reversal valve, a piston repositioning device and a striking device. The piston which is used for separating a first chamber and a second chamber is positioned in the gas cylinder; a piston rod hermetically passes through the second chamber and is connected with the striking device; an air outlet C3 is positioned on the gas cylinder; and a movable valve plug of the reversal valve is driven to move by the pressure difference generated by the alternated changes of the pressure in the first chamber and the second chamber, so as to alternatively connect or disconnect the compressed air and the first chamber or the second chamber of the gas cylinder. By adopting the match of the reversal valve and the reciprocating motion of the piston, the intake and exhaust of the first chamber and the second chamber of the gas cylinder are switched, thereby realizing the automatic reverse of the piston. By the reciprocating motion of the piston in the gas cylinder, the piston is driven to do reciprocating motion, and the striking device which is connected with the piston rod is driven to do reciprocating motion, thereby achieving the purpose of striking round nails. The utility model provides the pneumatic hammer which is efficient and professional and is capable of striking the round nails automatically.

Description

Pneumatic nail hammer

Technical field

The utility model relates to a kind of automatic beating unit of nail, and the wire nail that particularly a kind of carpenter uses impacts erecting tools automatically.

Background technology

At present, the nail hammer on the market all is to rely on the manual mode that impacts to finish the process of nailing, and in operation process, operating personnel brandish the bottom that nail hammer impacts nail, and making nail embed needs fixing interior of articles, and this mode has been used limitation.At first, nail and need very big power just nail can be hammered into by nail hammer, labour intensity is big.Secondly, the mode that impacts by nail hammer is nailed and need be buttressed the medium position of nail with finger, in impacting process, in case deviation to some extent impacts finger easily, damages accident, and its security is lower.At last, even for professional carpenter personnel, if all need to follow closely large batch of nail every day, even the workman who is skilled in technique, guarantee at needs under the prerequisite of accuracy that per minute also is difficult to follow closely nail more than 20 by the manual mode that impacts, operating efficiency is also low.Therefore, in the prior art, also there be not a kind of can the realization to finish the power tool that nail impacts process by automatic mode.

The utility model content

The utility model proposes a kind of high efficiency, can finish the pneumatic nail hammer that nail impacts automatically at the prior art deficiency.

For achieving the above object, the utility model adopts compressed air-driven, belongs to pneumatic tool.Comprise feeder, have first chamber, the cylinder of second chamber, piston, reversal valve, piston reset device and beating unit; Feeder is made up of air inlet pipe 1, air inlet pipe 2, air inlet pipe 3, air inlet pipe 4 and air inlet switch; Be provided with the piston that is used to separate described first chamber and second chamber in the cylinder; Second chamber that passes that the piston rod of piston is airtight is connected with beating unit, and exhaust outlet C3 is set on cylinder, in cylinder first chamber roof air inlet C1 is set, and on second chamber of cylinder air inlet C2 is set; Air inlet P, blow vent P1, blow vent P2 are set on reversal valve; Air inlet pipe 1 taps into tracheae 2 through the air inlet switch, air inlet P on another termination reversal valve of air inlet pipe 2, the blow vent P1 on the reversal valve through air inlet pipe 3 be arranged on cylinder first chamber roof on airtight connection of air inlet C1, the blow vent P2 on the reversal valve through air inlet pipe 4 be arranged on cylinder second chamber on airtight connection of air inlet C2.The utility model utilizes cooperating of reversal valve and reciprocating motion of the pistons, switches the air inlet and the exhaust of cylinder first chamber and second chamber, the automatic reverse of realization piston.By the reciprocating motion of piston in cylinder, close and open exhaust outlet C3, thereby cause alternately changing of cylinder first chamber and second chamber pressure, alternately the air pressure that changes drives moving of change-over valve core, and then replace turn on and off the compressed air that enters first chamber and second chamber, realize the reciprocation cycle of piston in cylinder, the beating unit that links with piston rod also carries out reciprocal impacting, and circulation is finished wire nail is knocked installation automatically.

Further improvement of the utility model is that reversal valve is made up of valve body, spool, valve sealing surface A, sealing ring, valve sealing surface B; Sealing ring embeds and is arranged in the groove of two end faces of spool, respectively over against blow vent P1 and P2, valve sealing surface A and valve sealing surface B are set on the valve body, the area of sealing ring can cover valve sealing surface A and valve sealing surface B, spool is concentric with the pilot hole on the valve body, and being matched in clearance, spool can move freely along axis in the valve body pilot hole; Spool has two operating positions at least; When spool was shifted to first operating position, valve sealing surface A and sealing ring were fitted and are sealed, and when spool was shifted to second operating position, valve sealing surface B and sealing ring were fitted and sealed.

Further improvement of the utility model is that also the exhaust outlet C3 on the cylinder is provided with near the end that needs piston stroke, to guarantee needed strike haul distance.

Of the present utility modelly change further also to advance to be that when not having compressed air to feed described reversal valve, spool is in first operating position.

Of the present utility modelly change further also to advance to be that piston has an initial position, when piston was in initial position, exhaust outlet C3 was isolated second chamber, one side.

Further improvement of the utility model is that also beating unit also is connected with and is used to make the automatically reset back-moving spring of described beating unit.

Further improvement of the utility model is that also the shared back-moving spring of piston reset device and beating unit resets.

Further improvement of the utility model also is, is provided with a nail clamper.The nail clamper comprise a ccontaining nail the nail containing cavity, be used to step up the clamping part of nail, the connecting portion that is connected with described pneumatic nail hammer.Along with pushing of nail, the nail clamper can slide along (guider) cylinder-bore axis direction.

Further improvement of the utility model is that also feeder also is provided with and is used to be switched on or switched off compressed-air actuated air inlet switch.

Good effect of the present utility model is:

1, adopts the open and close of feeder control nail hammer, utilize compressed air-driven to finish automatically wire nail is knocked installation, replace the manpower work;

2, improved efficient and the quality that wire nail knocks installation;

3, the automatic clip nail of nail clamper is easy to use, has solved not convenient property and safety issue in the traditional-handwork operation process;

4, utilize cooperating of reversal valve and reciprocating motion of the pistons, switch the air inlet and the exhaust of cylinder first chamber and second chamber, the automatic reverse of realization piston, dependable performance, precision height.

Description of drawings

Fig. 1 is the pneumatic nail hammer structural representation of the utility model.

Fig. 2 is the structural representation of reversal valve in the utility model.

Among the figure:

1, feeder; 2, cylinder; 3, piston; 4, reversal valve; 6, beating unit; 7, back-moving spring; 8, nail clamper; 11, air inlet pipe 1; 12, air inlet pipe 2; 13, air inlet switch; 14, air inlet pipe 3; 15, air inlet pipe 4; 21, first chamber; 22, second chamber; 25, air inlet C1; 26, air inlet C2; 27, exhaust outlet C3; 31, piston rod; 40, valve body; 41, spool; 42, valve sealing surface A; 43, sealing ring; 44, valve sealing surface B; 47, air inlet P; 48, blow vent P1; 49, blow vent P2.

The specific embodiment

Below preferred embodiment of the present utility model is described in detail, thereby protection domain of the present utility model is made more explicit defining so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that.

Referring to accompanying drawing 1 and accompanying drawing 2,

A kind of pneumatic nail hammer comprises feeder 1, has cylinder (2), piston 3, reversal valve 4, piston reset device 5 and the beating unit 6 of first chamber 21, second chamber 22; Feeder 1 is made up of air inlet pipe 1 (11), air inlet pipe 2 (12), air inlet pipe 3 (14), air inlet pipe 4 (15) and air inlet switch 13; Be provided with the piston 3 that is used to separate described first chamber 21 and second chamber 22 in the cylinder 2; Piston rod 31 airtight described second chambers 22 that pass of described piston 3 are connected with beating unit 6, exhaust outlet C3 (27) is set on cylinder 2, in cylinder 2 first chamber roof air inlet C1 (25) is set, on second chamber 22 of cylinder 2, air inlet C2 (26) is set; Air inlet P (47), blow vent P1 (48), blow vent P2 (49) are set on reversal valve 4; Air inlet pipe 1 (11) taps into tracheae 2 (12) through air inlet switch 13, air inlet P (47) on another termination reversal valve 4 of air inlet pipe 2 (12), the blow vent P1 (48) on the reversal valve 4 through air inlet pipe 3 (14) be arranged on cylinder 2 first chambers 21 tops on airtight connection of air inlet C1 (25), the blow vent P2 (49) on the reversal valve 4 through air inlet pipe 4 (15) be arranged on cylinder 2 second chambers 22 on airtight connection of air inlet C2 (26).

Present embodiment

reversal valve

4 and 3 reciprocating cooperations of piston, the air inlet and the exhaust of switching cylinder 2 first chambers 21 and second chamber 22 realize the automatic reverse of piston 3.By the reciprocating motion of piston 3 in cylinder 2, close and open exhaust outlet C3 (27), thereby cause alternately changing of cylinder 2 first chambers 21 and second chamber, 22 air pressure, alternately the air pressure that changes drives moving of reversal valve 4 spools 41, and then replace turn on and off the compressed air that enters first chamber 21 and second chamber 22, realize the reciprocation cycle of piston 3 in cylinder 2, the beating unit 6 that links with piston rod 31 also carries out reciprocal impacting, and circulation is finished wire nail is knocked installation automatically.

Reversal valve 4 is made up of valve body 40, spool 41, valve sealing surface A (42), sealing ring 43, valve sealing surface B (44); Sealing ring 43 embeds and is arranged in the groove of 41 two end faces of spool, respectively over against blow vent P1 (48) and P2 (49), valve sealing surface A (42) and valve sealing surface B (44) are set on the valve body 40, the area of sealing ring 43 can cover valve sealing surface A (42) and valve sealing surface B (44), spool 41 is concentric with the pilot hole on the valve body 40, and being matched in clearance, spool 41 can move freely along axis in valve body 40 pilot holes; Spool 41 has two operating positions at least; When spool 41 was shifted to first operating position, valve sealing surface A (42) fitted with sealing ring 43 and seals, when spool 41 is shifted to second operating position, and valve sealing surface B (44) and sealing ring 43 applying sealings.

When the starting up, open air inlet switch 13, spool is shifted to first operating position, and reversal valve 4 cuts out being communicated with of air inlet pipe P (47) and blow vent P2 (49), cuts off compressed air and enters cylinder second chamber 22; Open being communicated with of air inlet pipe P (47) and blow vent P1 (48), flow through air inlet pipe 3 (14), air inlet C1 (25) of compressed air enters cylinder 2 first chambers 21, and the piston 3 that promotes to be in initial position moves to second chamber, 22 directions.

Exhaust outlet C3 (27) on the cylinder 2 is provided with near the end that needs piston 3 strokes, to guarantee the required stroke that impacts, when the sealing surface that moves to first chamber, one side when piston 3 is crossed exhaust outlet C3 (27), first chamber 21 is communicated with atmosphere through exhaust outlet C3 (27), cause the pressure in first chamber to reduce rapidly, at this moment, piston 3 impacts forward by inertia together with piston rod 31.

When piston 3 impacts forward by inertia together with piston rod 31, air in second chamber 22 is compressed, through air inlet C2 (26), air inlet pipe 4 (15), through blow vent P2 (49), at this moment, spool 41 is promoted by the air pressure of cylinder 2 second chambers 22, shifts to blow vent P1 (48) one sides, closes the UNICOM of blow vent P1 (48) and air inlet P (47), cut off compressed air and enter cylinder first chamber 21, connect the UNICOM of blow vent P2 (49) and air inlet P (47) simultaneously.At this moment, enter second chamber 22 through air inlet pipe 4 (15), air inlet C2 (26), promote piston and move to first chamber, 21 directions from the compressed air of air inlet P (47).When the sealing surface that is positioned at second chamber, one side when piston is crossed exhaust outlet C3 (27), second chamber 22 is communicated with atmosphere through exhaust outlet C3 (27), cause the pressure in second chamber to reduce rapidly, piston 3 leans on inertia when first chamber impacts together with piston rod 31, air in first chamber 21 is compressed, through blow vent P1 (48), at this moment, spool 41 is subjected to the air pressure of cylinder 2 first chambers 21 to promote to shift to blow vent P2 (49) one sides, close the UNICOM of blow vent P2 (49) and air inlet P, cut off compressed air and enter cylinder second chamber 22, connect simultaneously blow vent P1 (48) with the UNICOM of air inlet P (47), beginning second working cycles of taking turns.

Reversal valve cooperates with reciprocating motion of the pistons, switch the air inlet and the exhaust of cylinder first chamber and second chamber, realize the automatic reverse of piston, the reciprocating motion of piston in cylinder, close and open exhaust outlet C3, thereby cause alternately changing of cylinder first chamber and second chamber pressure, alternately the air pressure that changes drives moving of change-over valve core, and then replace turn on and off the compressed air that enters first chamber and second chamber, realize the reciprocation cycle of piston in cylinder.Also back and forth impact with the beating unit of piston rod interlock, circulation is finished wire nail is knocked installation automatically.Beating unit 6 also is connected with and is used to make beating unit 6 automatically reset back-moving springs 7.

The function of piston reset device is: make piston be returned to initial position after shutdown, promptly present embodiment adopts the back-moving spring of beating unit to make piston reset.Also can utilize other repositioning methods, realize the safety operation of nail hammer in conjunction with the piston reset device.As can utilize impact before wire nail touch by the power of nail object, promote piston rod and make piston reset.

For ease of and safety operation, also be provided with a nail clamper 8.Nail clamper 8 comprise a ccontaining nail the nail containing cavity, be used to step up nail clamping part, be slidingly connected mutually with the connecting portion of pneumatic nail hammer.Nail clamper 8 can slide along the cylinder-bore axis direction, so that impact in the process at device, along with the shortening that does not hammer into part of nail, progressively slides to impacting opposite direction, makes tup can impact the top all the time among nail is tufted into object fully.

By above-mentioned embodiment, be not difficult to find out the utility model be a kind of efficient, can carry out the pneumatic nail hammer that nail is beaten automatically.

Above embodiment only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the people that is familiar with this technology understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this, all equivalences of doing according to the utility model spirit essence change or modification all is encompassed in the protection domain of the present utility model.

Claims

1. pneumatic nail hammer is characterized in that: comprise feeder (1), have first chamber (21), the cylinder (2) of second chamber (22), piston (3), reversal valve (4), piston reset device (5) and beating unit (6); Described feeder (1) is made up of air inlet pipe 1 (11), air inlet pipe 2 (12), air inlet pipe 3 (14), air inlet pipe 4 (15) and air inlet switch (13); Be provided with the piston (3) that is used to separate described first chamber (21) and second chamber (22) in the described cylinder (2); Described second chamber (22) that passes that the piston rod (31) of described piston (3) is airtight is connected with beating unit (6), exhaust outlet C3 (27) is set on cylinder (2), in cylinder (2) first chamber roof air inlet C1 (25) is set, on second chamber (22) of cylinder (2), air inlet C2 (26) is set; Air inlet P (47), blow vent P1 (48), blow vent P2 (49) are set on described reversal valve (4); Air inlet pipe 1 (11) taps into tracheae 2 (12) through air inlet switch (13), air inlet P (47) on another termination reversal valve (4) of air inlet pipe 2 (12), the blow vent P1 (48) on the reversal valve (4) through air inlet pipe 3 (14) be arranged on cylinder (2) first chamber (21) tops on airtight connection of air inlet C1 (25), the blow vent P2 (49) on the reversal valve (4) through air inlet pipe 4 (15) be arranged on cylinder (2) second chambers (22) on airtight connection of air inlet C2 (26).

2. pneumatic nail hammer according to claim 1 is characterized in that: described reversal valve (4) is made up of valve body (40), spool (41), valve sealing surface A (42), sealing ring (43), valve sealing surface B (44); Sealing ring (43) embeds and is arranged in the groove of (41) two end faces of spool, respectively over against blow vent P1 (48) and P2 (49), valve sealing surface A (42) and valve sealing surface B (44) are set on the valve body (40), the area of sealing ring (43) can cover valve sealing surface A (42) and valve sealing surface B (44), spool (41) is concentric with the pilot hole on the valve body (40), and being matched in clearance, spool (41) can move freely along axis in valve body (40) pilot hole; Spool (41) has two operating positions at least; When spool (41) was shifted to first operating position, valve sealing surface A (42) fitted with sealing ring (43) and seals, when spool (41) is shifted to second operating position, and valve sealing surface B (44) and sealing ring (43) applying sealing.

3. pneumatic nail hammer according to claim 2 is characterized in that: when not having compressed air to feed described reversal valve (4), spool (41) is in first operating position.

4. pneumatic nail hammer according to claim 1 is characterized in that: the exhaust outlet C3 on the described cylinder (2) is provided with near the end that needs piston (3) stroke.

5. pneumatic nail hammer according to claim 1 is characterized in that: described piston (3) has an initial position, and when piston (3) when being in initial position, exhaust outlet C3 (27) is isolated second chamber (22) one sides.

6. pneumatic nail hammer according to claim 1 is characterized in that: described beating unit (6) also is connected with and is used to make the automatically reset back-moving spring of described beating unit (6) (7).

7. pneumatic nail hammer according to claim 1 is characterized in that: described piston reset device (5) resets with the shared back-moving spring of beating unit (6) (7).

8. pneumatic nail hammer according to claim 1 is characterized in that: also be provided with a nail clamper (8); Described nail clamper (8) comprise a ccontaining nail the nail containing cavity, be used to step up the clamping part of nail, the connecting portion that is connected with described pneumatic nail hammer; Described nail clamper (8) can slide along described cylinder-bore axis direction.