CN201342587Y

CN201342587Y - Unclamping cylinder device

Info

Publication number: CN201342587Y
Application number: CNU2008201842295U
Authority: CN
Inventors: 简新锋
Original assignee: HINAKA FLUID POWER CO Ltd
Current assignee: HINAKA FLUID POWER CO Ltd
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2009-11-11
Anticipated expiration: 2018-12-29

Abstract

An unclamping cylinder device mainly adopts the structure that an unclamping unit is designed to be provided with a hollow housing, a reinforcing sleeve which is attached to the inner peripheral surface of the housing, an inner ring base which is movably touched to the inner peripheral surface of the reinforcing sleeve, an annular obstructing base which is connectedly arranged on the bottom surface of the reinforcing sleeve and attached to the inner peripheral surface of the housing, and a hollow unclamping rod which is fixedly arranged on the inner ring base and extends downwards out of the obstructing base and the housing; and only the smaller reinforcing sleeve is made of higher-hardness and higher-cost materials, and the larger housing is made of lower-hardness and low-cost materials. In addition, the obstructing base exists between the unclamping rod and the inner peripheral surface, and takes up the original partial wall thickness of the unclamping rod, so that the unclamping rod can be designed as thinner wall thickness type. Therefore, the purpose of effectively reducing the material consumption and the cost is achieved.

Description

The knife striking cylinder device

Technical field

The utility model relates to a kind of knife striking cylinder device, particularly a kind of knife striking cylinder device that is applicable to center machine.

Background technology

Along with the progress of science and technology, relatively also just more and more high for the requirement of the accuracy of manufacture and speed of production, but therefore in recent years not striking cutting or the turning center machine that can finish multi-pass processing of price also accepted by people gradually.

So-called center machine, utilize computer to cooperate tool magazine and the automatic tool changer that is equipped with multiple cutter exactly, on a working substance, to carry out the processing of multi-pass, change the time that facility are wasted when reducing the processing working substance whereby, can also avoid mismachining tolerance that different facility produce and so as to improving machining accuracy.

Consult Fig. 1, Fig. 2, existing supercharging knife striking cylinder device 1 comprises a displacement cylinder 11, a power unit 12 and a unit 13 of forging a knife.

This displacement cylinder 11 comprises that cover plate 112, that the cylinder body 111, that without exception is tubular and both ends open is covered on these cylinder body 111 1 ends is covered on supercharging lid 113, the one movable actuating strut of being located in this cylinder body 111 114 of these cylinder body 111 other ends, an and piston 115 that is arranged on this actuating strut 114, this cover plate 112 is formed with one first air intake duct 116, and this supercharging lid 113 is formed with runner 118 (only seeing Fig. 2) that a through hole 117, that can supply this actuating strut 114 to stretch through is communicated with this through hole 117 and one second air intake duct 119.

This power unit 12 comprises that one is arranged on this cover plate 112 and the pneumatic supply 121, that is communicated with this first air intake duct 116 is communicated with this pneumatic supply 121 and is arranged at the communicating pipe 122, one of this second air intake duct 119 on this cylinder body 111 and is communicated with this runner 118 and is equipped with the oil groove 123 (only seeing Fig. 2) of hydraulic oil 120.

This unit 13 of forging a knife comprises that one is connected with the shell 131 on this supercharging lid 113, one is arranged in the bar 132 of forging a knife in this shell 131 movably, one is arranged at the capping 133 of this shell 131 in contrast to an end of this supercharging lid 113, one is formed at the 3rd air intake duct 134 in this capping 133, and a connection the 3rd air intake duct 134 and the involution pipe 135 of this communicating pipe 122, this bar 132 of forging a knife has the rod body section 137 that an external diameter is equal to shell 131 internal diameters, one by this rod body section 137 extend downwards and section less than the nose section 138 of this rod body section 137, and one be recessed in this nose section 138 downwards and be communicated with the storage tank 136 of this through hole 117 by this rod body section 137, and the hydraulic oil 120 in the oil groove 123 then riddle in this runner 118 and this storage tank 136.

When center machine is carried out tool changing, automatic tool changer (figure does not show) is taken the cutter of pre-replacement earlier, afterwards, make the piston 115 of the gas of pneumatic supply 121 via these first air intake duct, 116 these displacement cylinders 11 of promotion, driving this actuating strut 114 moves towards bar 132 directions of forging a knife, and then push hydraulic oil 120 in the storage tank 136 that is placed in this bar 132 of forging a knife, utilize pressure that hydraulic oil 120 produced promote the to forge a knife bar 132 of forging a knife of unit 13 to move to tool change position shown in Figure 2 towards direction away from this supercharging lid 113, cooperate automatic tool changer to get the tool changing tool, because this piston 115, rod body section 137, nose section 138 threes are the designs that are the section convergent, therefore, can utilize the variation of basal area to reach the effect that promotes thrust.

After cutter changing finishes, then make the gas of pneumatic supply 121 be delivered in this second air intake duct 119, the 3rd air intake duct 134 with this involution pipe 135 via this communicating pipe 122, promote this piston 115 simultaneously and move to position shown in Figure 1 towards cover plate 112 directions, to prepare to change the operation of cutter next time with this bar 132 of forging a knife.

And existing supercharging knife striking cylinder device 1 main shortcoming just is: as shown in Figure 2, because hydraulic oil 120 not only riddles in this storage tank 136, seal in the space of enclosing but also can be present in this supercharging lid 113, the rod body section 137 of the bar 132 of forging a knife, shell 131, and the oil pressure value that hydraulic oil 120 is produced is quite high, and this shell 131 is not in order to produce distortion because of high oil pressure, so it normally can be made with the higher rigidity material of hardness, so as to improving durability degree and service life, yet such design thing followed shortcoming is that cost is higher.

In addition, existing supercharging knife striking cylinder device 1 is to utilize this piston 115, rod body section 137, nose section 138 threes to be the design of section convergent, reach the effect that promotes thrust, therefore, this rod body section 137 can not at random dwindle cross section and volume, so cooperating this rod body section 137 more also is will bear high oil pressure can select the higher rigidity material of hardness for use, generally speaking, this rod body section 137 is to utilize the higher rigidity material of cost to make the aspect of suitable thickness, if can reduce its thickness, also can effectively reduce the manufacturing cost of existing supercharging knife striking cylinder device 1 naturally.

Moreover, existing supercharging knife striking cylinder device 1 must be set up involution pipe 135 in addition again, and in this capping 133, offer the 3rd air intake duct 134, could allow the gas action and this bar 132 of forging a knife is pushed into position shown in Figure 1 again, not only need to spend the material cost of involution pipe 135, and to design special dies in addition, and just can mold capping 133 with the 3rd air intake duct 134, overall operation cost and difficulty are all higher.

The utility model content

The purpose of this utility model provides the low knife striking cylinder device that still still can possess high structural strength of a kind of cost.

Knife striking cylinder device described in the utility model, comprise that a piston-cylinder unit, is arranged at the unit of forging a knife on this piston-cylinder unit, and be used for driving an oil circuit unit and an exhaust unit of this unit reciprocating action of forging a knife, this piston-cylinder unit has the cylinder body that without exception is tubular and both ends open, be covered on a upper cylinder cover at these cylinder body two ends and cylinder cap, once respectively is arranged at piston in this cylinder body movably, and one is arranged on this piston and the catch bar of this time cylinder cap that can stretch through.

This unit of forging a knife then has a hollow form shell that is connected with on this time cylinder cap bottom surface, one is connected with on this time cylinder cap bottom surface and pastes the reenforcing sleeve that is butted on this shell inner peripheral surface, one touches movably to the interior ring seat that is arranged at this reenforcing sleeve inner peripheral surface, one is connected with on this reenforcing sleeve bottom surface and paste the ring-type be butted on this shell inner peripheral surface and intercept seat, and one be fixedly arranged on ring seat in this and extend downwards and pass this obstructs and the hollow form of the shell bar of forging a knife, this reenforcing sleeve external diameter less than this internal diameter of outer cover so that itself and this shell inner peripheral surface partly paste to the time leave the gap, the hardness of this reenforcing sleeve is greater than the hardness of this shell, this obstruct seat with this enclosure distinguish one in this upper chamber of ring seat and this obstructs seat, and one be positioned at below this obstruct and be the lower chamber of closed.

This exhaust unit has a gas storage source, one is communicated to the upper end passage of the piston top in the cylinder body by this gas storage source via upper cylinder cover, one is communicated to the lower end passage of the piston below in the cylinder body by this gas storage source via following cylinder cap, and one by this lower end corridor diversion to the subchannel that is communicated to this upper chamber between this shell inner peripheral surface and the reenforcing sleeve outer peripheral face again via this obstruct, this oil circuit unit then has an oil storage source, one by the ring seat in this and the appearance grease chamber that the bar inner space defined out jointly that forges a knife, an and Oil Guide passage that is communicated with this oil storage source and this appearance grease chamber via this time cylinder cap, and the catch bar of this piston-cylinder unit is extended through among this appearance grease chamber movably.

This exhaust unit has a gas storage source, one be communicated with this this piston top to the cylinder body via this upper cylinder cover by this gas storage source upper end passage, one and is communicated to the lower end passage of this piston below in this cylinder body via this time cylinder cap by this gas storage source, and one by this lower end corridor diversion to the subchannel that is communicated to this upper chamber between this shell inner peripheral surface and this reenforcing sleeve outer peripheral face again via this obstruct.

Knife striking cylinder device described in the utility model, the shell of this unit of forging a knife is formed with an elongated slot, this knife striking cylinder device also comprises a sensing unit, this sensing unit has one and is arranged at the holder on this outer surface of outer cover, an induction pieces that is arranged on this holder and controls this gas storage source action, and a moving member that moves along with this bar of forging a knife in this elongated slot.

Knife striking cylinder device described in the utility model, the moving member of this sensing unit has a body that is used for covering this induction pieces, and one extended and pasted the extension that is butted on this rod outer surface of forging a knife by this body, this sensing unit also has the locating ring of an internal diameter greater than this bar external diameter of forging a knife, and at least one is locked on the packing bolt on this locating ring, when being sheathed on, this locating ring leaves the gap when this forges a knife rod outer surface, extension for this moving member is inserted in wherein, and described packing bolt then passes this locating ring and touches to this extension and makes this extension form the state that packing engages with the rod outer surface of forging a knife.

Knife striking cylinder device described in the utility model, the shell of this unit of forging a knife has a hollow form housing that is connected with on this time cylinder cap bottom surface, reach one by the outward extending collar flange seat of this housing bottom, this unit of forging a knife also has one and is embedded at forge a knife base between the bar of this shell and this, this lower chamber is isolated from the outside and is closed.

Knife striking cylinder device described in the utility model, the bar of forging a knife of this unit of forging a knife has a shaft that is fixedly arranged on ring seat in this, and the head of forging a knife that is arranged at this shaft bottom, this exhaust unit also has the insufflation channel that a supplied gas is flowed through this base, this shaft and flowed out from this head of forging a knife by this flanged housing.

Knife striking cylinder device described in the utility model, the insufflation channel of this exhaust unit has one and provides first pipeline in this flanged housing, one and provide in this base and be communicated with second pipeline of this first pipeline, the 3rd pipeline that provides in this shaft, and one provide in this head and be communicated with the 4th pipeline of the 3rd pipeline of forging a knife, and along with this bar of forging a knife moves, this second pipeline, the 3rd pipeline are communicated with the position one and non-ly are communicated with the conversion that moves around between the position with one.

Knife striking cylinder device described in the utility model, the gas storage source of this exhaust unit is arranged on this upper cylinder cover, and the oil storage source of this oil circuit unit then is arranged on this time cylinder cap.

The beneficial effects of the utility model are: the reenforcing sleeve of smaller size smaller adopts hardness and all higher material (for example carbon steel) of cost, the shell that volume is bigger then is all lower material of hardness and cost (for example aluminium), and this obstruct seat this bar part wall thickness originally of forging a knife that accounted for, imitate whereby and reduce materials and cost, moreover, as long as this reenforcing sleeve placed in the shell with regard to plastic go out this subchannel, its moulding difficulty is obviously quite low, helps to improve packaging efficiency.

Description of drawings

Fig. 1 is a cutaway view, and the aspect that the piston and the bar of forging a knife do not move down all as yet is described in the existing supercharging knife striking cylinder device.

Fig. 2 is a cutaway view, in the aid illustration existing supercharging knife striking cylinder device shown in Figure 1, and the aspect that piston and the bar of forging a knife have moved down all.

Fig. 3 is a cutaway view, and the preferred embodiment of the utility model knife striking cylinder device is described, its piston does not move down all as yet with the bar of forging a knife.

Fig. 4 is a cutaway view, illustrates that the piston of this preferred embodiment and the bar of forging a knife move down all.

Fig. 5 is a local amplification view, and the design aspect of its sensing unit is described in this preferred embodiment.

Fig. 6 is a local amplification view, and the design aspect of its insufflation channel is described in this preferred embodiment.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is elaborated.

Consult Fig. 3, the preferred embodiment of the utility model knife striking cylinder device 2, comprise that a piston-cylinder unit 3, is arranged at the unit 4 of forging a knife on this piston-cylinder unit 3, is used for driving an oil circuit unit 5 and an exhaust unit 6 of these unit 4 reciprocating actions of forging a knife, and a sensing unit 7 (only seeing Fig. 4, Fig. 5) that is arranged on this unit 4 of forging a knife.

This piston-cylinder unit 3 has the cylinder body 31 that without exception is tubular and both ends open, be covered on a upper cylinder cover 32 at these cylinder body 31 two ends and cylinder cap 33, once respectively is arranged at piston 34 in this cylinder body 31 movably, and one is arranged on this piston 34 and the catch bar 35 of this time cylinder cap 33 that can stretch through.

This 4 of unit of forging a knife has a hollow form shell 41 that is connected with on this time cylinder cap 33 bottom surfaces, one is connected with on this time cylinder cap 33 bottom surfaces and pastes the reenforcing sleeve 42 that is butted on these shell 41 inner peripheral surfaces, one touches movably to the interior ring seat 43 that is arranged at these reenforcing sleeve 42 inner peripheral surfaces, one is connected with on this reenforcing sleeve 42 bottom surfaces and paste the ring-type be butted on these shell 41 inner peripheral surfaces and intercept seat 44, one is fixedly arranged on ring seat 43 in this and extends the hollow form that passes this obstructs seat 44 and shell 41 bar 45 of forging a knife downwards, and one be embedded at this shell 41 and forge a knife base 46 between the

bar

45, and 43 of this interior ring seats are around defining a breakthrough part 431.

Be noted that especially, these reenforcing sleeve 42 external diameters less than these shell 41 internal diameters so that itself and this shell 41 inner peripheral surfaces partly paste to the time leave the gap, the hardness of this reenforcing sleeve 42 is greater than the hardness of this shell 41, with present embodiment, this reenforcing sleeve 42 adopts hardness and all higher material (for example carbon steel) of cost, and 41 on this shell is all lower material of hardness and cost (for example aluminium).

44 of this obstruct seats with these shell 41 inner area tell one in this a ring seat 43 and a upper chamber 47 that intercepts between 44, an and lower chamber 48 that is positioned at this obstructs 44 below, and be embedded at this shell 41 and forge a knife between the bar 45 by this base 46, this lower chamber 48 is isolated from the outside and is closed.

As for the bar 45 of forging a knife of this unit 4 of forging a knife, it has a shaft 451 that is fixedly arranged on ring seat 43 in this, and one be arranged at these shaft 451 bottoms forge a knife 452, this shaft 451 is in being the appearance oil groove 453 that offers a major axis shape in contrast to 452 the end of forging a knife.

41 on the shell of this unit 4 of forging a knife has a hollow form housing 411 that is connected with on this time cylinder cap 33 bottom surfaces, and one extend the collar flange seat 412 that forms by the outside one in these housing 411 bottoms, and this housing 411 is formed with an elongated slot 413 (only seeing Fig. 4).

Consult Fig. 4,5 of this oil circuit unit have one and are arranged at the appearance grease chamber 52 that oil storage source 51 on this time cylinder cap 33, is defined out by ring seat in this 43 and bar 45 both inner spaces of forging a knife (just breakthrough part 431+ holds oil groove 453) jointly, an and Oil Guide passage 53 that is communicated with this oil storage source 51 and appearance grease chamber 52 via this time cylinder cap 33, and the catch bar 35 of this piston-cylinder unit 3 is extended through among this appearance grease chamber 52 movably.

Consult Fig. 3 again, this exhaust unit 6 have one be arranged at gas storage source 61 on this upper cylinder cover 32, a upper end passage 62, that is communicated to piston 34 tops in the cylinder body 31 via upper cylinder cover 32 by this gas storage source 61 is communicated to the lower end passage 63 of piston 34 belows in the cylinder body 31 by this gas storage source 61 via cylinder cap 33 down, and be communicated to the subchannel 64 of this upper chamber 47 between housing 411 inner peripheral surfaces that branch to this shell 41 by this lower end passage 63 and reenforcing sleeve 42 outer peripheral faces again via this obstruct 44.

Consult Fig. 4, Fig. 6, this exhaust unit 6 also has a supplied gas by this flanged housing 412 this base 46 of flowing through, shaft 451 and from these 452 insufflation channel 65 that flow out of forging a knife, and this insufflation channel 65 has first pipeline 651 of always being located at this flanged housing 412, always be located at this base 46 and be communicated with second pipeline 652 of this first pipeline 651, always be located at the 3rd pipeline 653 of this shaft 451, and always be located at this and forge a knife 452 and be communicated with the 4th pipeline 654 of the 3rd pipeline 653, and along with this bar 45 of forging a knife moves, this second pipeline 652, the 3rd pipeline 653 is to be communicated with the position shown in Figure 4 one non-ly to be communicated with the conversion that moves around between the position with shown in Figure 6 one.

Consult Fig. 5, this sensing unit 7 has a holder 71 that is arranged on housing 411 outer surfaces of this shell 41, one is arranged on this holder 71 and controls the induction pieces 72 of this gas storage source 61 actions, one moving member 73 that in this elongated slot 413, moves along with this bar 45 of forging a knife, one internal diameter is greater than the locating ring 74 of shaft 451 external diameters of this bar 45 of forging a knife, and a plurality of packing bolts 75 that are locked on this locating ring 74, this moving member 73 has a body 731 that is used for covering this induction pieces 72, and an extension 732 by shaft 451 outer surfaces that are butted on this bar 45 of forging a knife that this body 731 extends and pastes.

Because the internal diameter of this locating ring 74 is bigger, the external diameter of this shaft 451 is less, so when this locating ring 74 is sheathed on shaft 451 outer surfaces of this bar 45 of forging a knife, leave the gap, extension 732 for this moving member 73 is inserted in wherein, 75 on described packing bolt passes this locating ring 74 and touches to this extension 732 and makes this extension 732 form the positioning states that packing engages with shaft 451 outer surfaces of the bar 45 of forging a knife, and design reaches this moving member 73 along with this bar 45 of forging a knife moves up and down together whereby.

With the next manner of execution of introducing the utility model knife striking cylinder device 2:

As mentioned above, this moving member 73 moves around with respect to induction pieces 72 along with forging a knife bar 45, when this induction pieces 72 is in the original position of being covered fully by this moving member 73 as shown in Figure 5, this induction pieces 72 will be controlled this gas storage source 61 gas is sent into this upper end passage 62 (as shown in Figure 3), move towards the below with the piston 34 that promotes this piston-cylinder unit 3, and then this catch bar 35 of interlock stretches through among this appearance grease chamber 52, push fluid 8 whereby downwards, and since fluid 8 be closed and isolated and can not flow downward again, so fluid 8 can produce great oil pressure on the contrary and promote that ring seat 43 moves down in this, it is general as shown in Figure 4 to be fixedly arranged in this bar 45 of forging a knife on ring seat 43 with drive, moves down a predeterminable range.

Consult Fig. 4, at this moment, this second pipeline 652, the 3rd pipeline 653 are being communicated with the position, therefore, first pipeline, 651 to the 4th pipelines, 654 integral body of this insufflation channel 65 all are to be connected state, cooperate water conservancy diversion gas to supply constantly by these first pipeline, 651 outsides more always, institute is so that can allow water conservancy diversion gas 452 be flowed out by flow through this base 46, shaft 451 and forge a knife from this of this flanged housing 412, whereby a forge a knife machining object (figure does not show) of 452 of contiguous this is blown, to brush the residue waste material that is remained in the process on the machining object.

Processing with brush operation and all finish, and this induction pieces 72 sense again moving member 73 gradually away from, up to this induction pieces 72 fully not during crested, this induction pieces 72 just can be controlled this gas storage source 61 gas is sent into this lower end passage 63 and subchannel 64, at this moment, the piston 34 that the gas that flows in this lower end passage 63 can promote this piston-cylinder unit 3 moves back to Fig. 3 position towards the top, in addition, the gas that flows in this subchannel 64 then can enter this upper chamber 47 and promote and should interior ring seat 43 move up, can upwards be back in this oil storage source 51 after making fluid shown in Figure 48 be pushed, mode makes the bar 45 of forging a knife that is fixedly arranged on this interior ring seat 43 also can be moved upward to tool change position shown in Figure 3 to carry out the tool changing operation whereby.

See also Fig. 6 again, when this bar 45 of forging a knife moves to tool change position, this second pipeline 652, the 3rd pipeline 653 staggers mutually, just this second pipeline 652 is by 451 block of shaft, 653 of the 3rd pipelines are by 46 block of base, make this second pipeline 652, the 3rd pipeline 653 is in non-connection position, water conservancy diversion gas is supplied by these first pipeline, 651 outsides always constantly, but will be blocked when flowing to this second pipeline 652, mode whereby, finish the keying automation of water conservancy diversion gas, not only need not special electronic module and control the supply status of water conservancy diversion gas, comparatively simple and low-cost on the member designs, and when carrying out the tool changing operation, also can avoid water conservancy diversion gas to let out lavishly.

After the tool changing operation is finished, and this induction pieces 72 is again when being in the original position of being covered fully by this moving member 73 as shown in Figure 5, this induction pieces 72 just can be controlled this gas storage source 61 again gas is sent into this upper end passage 62, move towards the below to repeat to promote this piston 34, and then this bar 45 of forging a knife of interlock moves down a predeterminable range once again.

By above-mentioned design, present embodiment has the advantage of the following stated when actual fabrication:

(1) cost is low still still can possess high structural strength:

Present embodiment mainly is that the reenforcing sleeve 42 with high rigidity places in the shell 41; come so as to protecting this shell 41; it is unlikely because of oil pressure is too high is out of shape; therefore; this shell 41 just can adopt all lower material of hardness and cost (for example aluminium); and has only the reenforcing sleeve 42 that contacts with fluid 8 and need bear high oil pressure; just adopt all higher material of hardness and cost (for example carbon steel); design whereby; just can make overall construction design possess high structural strength, but but can reach the purpose that reduces cost.

(2) reduce the materials of this bar 45 of forging a knife and cost, simplify manufacture process:

Compared to the bar 132 of forging a knife of the prior art, its rod body section 137 must paste and be butted on shell 131 inner surfaces, so it is bigger that wall thickness can design, review forging a knife of present embodiment and exist obstruct seat 44 between bar 45 and shell 41 inner peripheral surfaces, this bar 45 part wall thickness originally of forging a knife has accounted for, bar 45 just can be designed to thin wall thickness kenel so this is forged a knife, and just can effectively reduce materials and cost whereby.

In addition, the bar 132 of forging a knife of the prior art, have rod body section 137 and nose section 138 that cross-sectional sizes differs, on making, need to process especially the less nose section in cross section 138, the cross-sectional sizes of reviewing the bar 45 of forging a knife of present embodiment there is no change on the whole, naturally need not further manufacturing process, so manufacture process is simpler.

(3) need not extra flow channel assembly, packaging efficiency height, comparatively attractive in appearance:

As long as placing in the shell 41 this reenforcing sleeve 42 with regard to plastic, present embodiment goes out this subchannel 64, its moulding difficulty is obviously quite low, nor with additionally installing or offer unnecessary flow channel assembly again, help to improve packaging efficiency, in addition, this subchannel 64 is hidden in the shell 41, and unlike the involution pipe 135 of prior art be directly be revealed in outside, therefore, present embodiment also has advantage comparatively attractive in appearance.

(4) this moving member 73 does not all have screw with the bar 45 of forging a knife and wears, and is difficult for reducing both structural strengths:

Because the effect of the described packing bolt 75 of present embodiment is to be used for extension 732 packing clippings with this moving member 73 in this locating ring 74 and forge a knife between bar 45 outer surfaces, but not be used for this moving member 73 with forge a knife bar 45 spiral shells admittedly together, therefore, this moving member 73 need not to offer screw naturally with the bar 45 of forging a knife or perforation comes to be stretched through for packing bolt 75, relatively also just is difficult for reducing moving member 73 and forges a knife both structural strengths of bar 45.

Conclude above-mentioned, the utility model knife striking cylinder device 2, its overall construction design is not only possessed high structural strength, and can reach the purpose that reduces cost, in addition, the materials and the cost of this bar 45 of forging a knife all can effectively reduce, and manufacture process is simpler, in addition, this knife striking cylinder device 2 also need not extra flow channel assembly, and not only packaging efficiency is high but also comparatively attractive in appearance, moreover, this moving member 73 and the bar 45 of forging a knife all do not have screw wear by, be difficult for reducing both structural strengths, so can reach the purpose of this utility model.

Claims

1. knife striking cylinder device, comprise a piston-cylinder unit, the unit of forging a knife that is connected with on this piston-cylinder unit, an oil circuit unit that is communicated with this unit of forging a knife, and exhaust unit, this piston-cylinder unit has a cylinder body that is tubular and both ends open, be covered on a upper cylinder cover and a following cylinder cap at these cylinder body two ends respectively, a piston that is arranged at versatilely in this cylinder body, and one be arranged on this piston and the catch bar of this time cylinder cap that can stretch through, it is characterized in that, this unit of forging a knife has a hollow form shell that is connected with on this time cylinder cap bottom surface, one is connected with on this time cylinder cap bottom surface and pastes the reenforcing sleeve that is butted on this shell inner peripheral surface, one is touched versatilely to the interior ring seat that is arranged at this reenforcing sleeve inner peripheral surface, one is connected with on this reenforcing sleeve bottom surface and paste the ring-type be butted on this shell inner peripheral surface and intercept seat, and one be fixedly arranged on ring seat in this and extend downwards and pass this obstructs and the hollow form of the shell bar of forging a knife, this reenforcing sleeve external diameter less than this internal diameter of outer cover so that itself and this shell inner peripheral surface partly paste to the time leave the gap, the hardness of this reenforcing sleeve is greater than the hardness of this shell, this obstruct seat is distinguished this enclosure the upper chamber of ring seat and this obstruct in this, and lower chamber that is positioned at this obstruct seat below and is closed, this oil circuit unit has an oil storage source, an appearance grease chamber that is defined out jointly by the ring seat in this and the bar inner space of forging a knife, and Oil Guide passage that is communicated with this oil storage source and this appearance grease chamber via this time cylinder cap, and, the catch bar of this piston-cylinder unit is extended through among this appearance grease chamber versatilely, this exhaust unit has a gas storage source, article one, the upper end passage that is communicated with this this piston top to the cylinder body by this gas storage source via this upper cylinder cover, article one, be communicated to the lower end passage of this piston below in this cylinder body via this time cylinder cap by this gas storage source, and one by this lower end corridor diversion to the subchannel that is communicated to this upper chamber between this shell inner peripheral surface and this reenforcing sleeve outer peripheral face again via this obstruct.

2. knife striking cylinder device according to claim 1, it is characterized in that, the shell of this unit of forging a knife is formed with an elongated slot, this knife striking cylinder device also comprises a sensing unit, this sensing unit has one and is arranged at the holder on this outer surface of outer cover, an induction pieces that is arranged on this holder and controls this gas storage source action, and a moving member that moves along with this bar of forging a knife in this elongated slot.

3. knife striking cylinder device according to claim 2, it is characterized in that, the moving member of this sensing unit has a body that is used for covering this induction pieces, and one extended and pasted the extension that is butted on this rod outer surface of forging a knife by this body, this sensing unit also has the locating ring of an internal diameter greater than this bar external diameter of forging a knife, and at least one is locked on the packing bolt on this locating ring, when being sheathed on, this locating ring leaves the gap when this forges a knife rod outer surface, extension for this moving member is inserted in wherein, and described packing bolt then passes this locating ring and touches to this extension and makes this extension form the state that packing engages with the rod outer surface of forging a knife.

4. knife striking cylinder device according to claim 3, it is characterized in that, the shell of this unit of forging a knife has a hollow form housing that is connected with on this time cylinder cap bottom surface, reach one by the outward extending collar flange seat of this housing bottom, this unit of forging a knife also has one and is embedded at forge a knife base between the bar of this shell and this, this lower chamber is isolated from the outside and is closed.

5. knife striking cylinder device according to claim 4, it is characterized in that, the bar of forging a knife of this unit of forging a knife has a shaft that is fixedly arranged on ring seat in this, and the head of forging a knife that is arranged at this shaft bottom, this exhaust unit also has the insufflation channel that a supplied gas is flowed through this base, this shaft and flowed out from this head of forging a knife by this flanged housing.

6. knife striking cylinder device according to claim 5, it is characterized in that, the insufflation channel of this exhaust unit has one and provides first pipeline in this flanged housing, one and provide in this base and be communicated with second pipeline of this first pipeline, the 3rd pipeline that provides in this shaft, and one provide in this head and be communicated with the 4th pipeline of the 3rd pipeline of forging a knife, and along with this bar of forging a knife moves, this second pipeline, the 3rd pipeline are communicated with the position one and non-ly are communicated with the conversion that moves around between the position with one.

7. knife striking cylinder device according to claim 1 is characterized in that, the gas storage source of this exhaust unit is arranged on this upper cylinder cover, and the oil storage source of this oil circuit unit then is arranged on this time cylinder cap.