CN101277784B

CN101277784B - Clamp device

Info

Publication number: CN101277784B
Application number: CN2006800362881A
Authority: CN
Inventors: 佐野博
Original assignee: CKD Corp
Current assignee: CKD Corp
Priority date: 2005-11-07
Filing date: 2006-10-30
Publication date: 2011-05-18
Anticipated expiration: 2026-10-30
Also published as: JP2007125679A; CN101277784A; WO2007052586A1; KR101022844B1; KR20080072816A; JP4028569B2

Abstract

Provided is a lightweight and compact clamp device in which the waiting position of a first clamp lever at the time when the clamp device is unclamped can be easily adjusted by a simple structure. The clamp device (10) comprises a base (21), a cylinder actuator (31) mounted on the base (21) and capable of performing linear motion, and the first clamp lever (42). Based on the linear motion of the cylinder actuator (31), the arm (41) rotates the first clamp lever (42) in the direction to move near to and away from a second clamp lever (22). A mounting means for changing the mounting position of the cylinder actuator (31) on the base (21) along the direction of the linear motion of the cylinder actuator (31) is provided between the base (21) and the cylinder actuator (31).

Description

Clamping device

Technical field

The present invention relates to a kind of be used for interim clamping work pieces-such as auto parts to be processed etc. in the production scene-clamping device, relate in particular to a kind of clamping device that workpiece between first clamping bar and second clamping bar is clamped or unclamps.

Background technology

For example, in patent documentation 1, disclosed this clamping device.In this clamping device, be provided with and be equipped with the clamp shaft of the desktop quadrature of workpiece, and this workpiece is fixing on the table by the anchor clamps that are located on this clamp shaft.This clamping device is provided with horizontal level regulon and height adjusting unit, this horizontal level regulon is used for moving the clamp shaft on this and this clamp shaft is fixed in the precalculated position, and this height adjusting unit is used to regulate the distance between this desktop and this anchor clamps.

This height adjusting unit has inner cylinder and outer cylinder, and they engage one another to relatively move along the longitudinal direction, also has the locking unit of this inner cylinder of locking and release and cylinder.This locking unit has the rod unit that is contained in this inner cylinder, and this rod unit rotates around longitudinal axis, comes by this this inner cylinder and outer cylinder are carried out locking and release.In this clamping device, even the alteration of form of this workpiece, this workpiece still can be by adjusting the horizontal level of these anchor clamps and highly coming certain fixing according to this alteration of form.

In the production scene as factory, this workpiece carries out continuous processing when moving through predetermined mobile route.In order to improve productivity ratio, this workpiece movement path is judged to select the shortest possible path.Like this, in this clamping device, need suitably to adjust the holding fix of these anchor clamps, be not in not clamped condition workpiece movement so that these anchor clamps can not hinder according to size, shape and the moving direction of this workpiece.When this holding fix that is in the anchor clamps of clamped condition not when this workpiece is too far away the clamped condition required time is not long because these anchor clamps are converted to from clamped condition, has therefore increased the risk that reduces productivity ratio.

Thus, this clamping device in the patent documentation 1, the holding fix of clamped condition anchor clamps has many improvable places for being in not.For example, proposed the first clamping device 110a shown in Figure 11 (a) and 11 (b), it makes can be under the situation that does not limit this workpiece movement direction, and this is in the not holding fix of clamped condition anchor clamps appropriate change, specifically, is horizontal level.

Shown in Figure 11 (a), the first clamping device 110a has bottom 112, is fixed to the gas cylinder actuators 113 of bottom 112 and the arm 115 that is attached with clamping bar 114, is attached with down clamping bar 111 on this bottom 112.Bottom 112 is connected to arm 115 by connecting rod 116.Gas cylinder actuators 113 has earthen pipe 117, in earthen pipe 117 the vertical piston that moves 118 and from the upper end of piston 118 towards earthen pipe 117 above the piston rod 119 that extends.Piston rod 119 upper ends and arm 115 articulate.

The first clamping device 110a also comprises the spacer 120 of the excircle that removably is attached to piston rod 119.By the groove shape parts of two symmetries being placed on the left and right sides of piston rod 119 respectively, and being fixed by bolt etc. and forming spacer 120.Spacer 120 is fixed on the excircle of piston rod 119.

The first clamping device 110a that will have the polytype spacer 120 of different length L uses for the user as fixture.Use the first clamping device 110a with a kind of like this state, that is, from polytype spacer 120, select the excircle that the spacer 120 with Len req L is attached to piston rod 119 with different length L.

Among the first clamping device 110a, the piston 118 by movable cylinder actuator 113 and with near or leave down clamping bar 114 in the direction rotation of clamping bar 111, can make this workpiece clamped or unclamp between last clamping bar 114 and following clamping bar 111.Not clamped condition shown in Figure 11 (b), end in contact on the lower end of spacer 120 and the earthen pipe 117 is come moving down and make and being in not that the last clamping bar 114 of clamped condition stops at this wait position of limited piston bar 119 by this.Like this, when the spacer 120 with shorter length L is attached to piston rod 119, this can be in the holding fix of the last clamping bar 114 of clamped condition not and changes into position after leaning on.

Also proposed the second clamping device 110b, wherein be attached with the adjustment screw of representing by the double dot dash line among Figure 11 (a) and 11 (b) 121 and replace spacer 120 among the first clamping device 110a.Among the second clamping device 110b, the adjustment screw 121 that is adjustable to predetermined altitude in the earthen pipe 117 is arranged on the lower end of cylinder actuator 113.Adjustment screw 121 is screwed into the screwed hole (not shown) in the bottom of earthen pipe 117, and by making adjustment screw 121 in this screwed hole advance or retreat, the upper end of adjustment screw 121 is adjusted to precalculated position in the earthen pipe 117.

Among the second clamping device 110b, be in the not clamped condition shown in Figure 11 (b), the last end in contact of the lower surface of piston 118 and adjustment screw 121 is come moving down and make and being in not that the last clamping bar 114 of clamped condition stops at this wait position of limited piston bar 119 by this.Like this, by changing the height of adjustment screw 121 upper ends in the earthen pipe 117, can change this and be in the not holding fix of the last clamping bar 114 of clamped condition.

Patent documentation 1: uncensored 2003-1537 patent disclosure.

Summary of the invention

The problem that solves

Yet, among the first clamping device 110a, need the polytype spacer 120 with length L be set at being in not each holding fix of the last clamping bar 114 of clamped condition.In addition, need be provided with between each parts special damping part absorb the lower end of spacer 120 and earthen pipe 117 on the vibrations that cause of end in contact.For this reason, the shortcoming of the first clamping device 110a is that number of spare parts increases, and causes cost to rise and the weight increase.On the other hand, among the second clamping device 110b, because adjustment screw 121 is extended from the lower ends downward of earthen pipe 117, the below of earthen pipe 117 needs bigger space, causes the overall dimension of this equipment bootlessly to increase.

Because above-mentioned problems of the prior art are made the present invention.An object of the present invention is to provide a kind of lightweight and compact clamping device, it can simple structure be regulated easily and is in the not holding fix of first clamping bar of clamped condition.

The means of dealing with problems

For reaching above-mentioned purpose, according to a first aspect of the invention, provide a kind of clamping device that is used to clamp or unclamp workpiece between first clamping bar and second clamping bar.This clamping device comprises the bottom, is attached to this bottom and linear actuators that can move linearly and arm, this arm have this first clamping bar and make this first clamping bar based on the rectilinear motion of this linear actuators with near or the direction of leaving this second clamping bar rotate.Be provided with attachment arrangement between this bottom and this linear actuators, this attachment arrangement can change the attachment location that this linear actuators is attached to this bottom along the linear movement direction of this linear actuators.

With this structure, in this clamping device, when the starting end rectilinear motion of this linear actuators in linear motion range when finishing end, this rectilinear motion is converted to and rotatablely moves and this arm is rotated.Because of the rotation of this arm, this first clamping bar is with the direction rotation near this workpiece, and this workpiece is clamped between these two clamping bars thus.In contrast, in this clamping device, when this linear actuators from the end end rectilinear motion of this linear motion range during to starting end, this rectilinear motion is converted to and rotatablely moves and this arm is rotated.Because of the rotation of this arm, this first clamping bar rotates with the direction of leaving this workpiece, and this workpiece is released between these two clamping bars thus.Then, during starting end in this linear actuators stops at this linear motion range, first clamping bar that the rotation of this arm stops and this is under the clamped condition not stops at final holding fix.

In this clamping device, the attachment location that can be attached to this bottom by this linear actuators of linear movement direction adjusted at this linear actuators is regulated this and is in the not final holding fix of first clamping bar of clamped condition.In this clamping device, be located between this bottom and this linear actuators because this is used to regulate the attachment arrangement that this linear actuators is attached to the attachment location of this bottom, utilize this attachment arrangement can regulate this easily and be in the not final holding fix of first clamping bar of clamped condition.In addition, only regulate the attachment location that this linear actuators is attached to this bottom by this attachment arrangement, just can regulate this and be in the not final holding fix of first clamping bar of clamped condition, just need not to use the isolated part of in background technology, describing thus such as the adjustment screw in the spacer in this first clamping device and this second clamping device.Therefore, according to this clamping device, can eliminate multiple shortcoming, comprise because of using the increase of the number of spare parts that this spacer and the necessary damping part of this spacer caused, and should use adjustment screw and the increase and the whole device size of the number of spare parts that causes increase.

Needed linear actuators is, by earthen pipe, in this earthen pipe along the straight-line piston of axis direction and be attached to the gas cylinder actuators that the piston rod of this piston constitutes.In addition, flange that need be integrally formed with this earthen pipe, be formed with the patchhole that inserts for attached bolt in this flange, this bottom is provided with the attachment that this attached bolt of a plurality of confessions is screwed into, these a plurality of attachment are placed on diverse location along the linear movement direction of this piston, and this attachment arrangement comprises this patchhole, these a plurality of attachment and this attached bolt.

With this structure, this gas cylinder actuators is attached to this bottom by the flange of this earthen pipe.This bottom is provided with a plurality of attachment that are arranged on diverse location along the linear movement direction of this linear actuators, and is provided with in this flange for this attached bolt insertion patchhole wherein.By from these a plurality of attachment, selecting to be screwed with the attachment that this is inserted in the attached bolt that inserts in the hole, can regulate the attachment location that this flange is attached to this bottom along this linear movement direction.Thus, in this clamping device, can regulate this easily and be in the not final holding fix of first clamping bar of clamped condition by simple especially structure.

Needed linear actuators is, by earthen pipe, in this earthen pipe along the straight-line piston of axis direction and be attached to the gas cylinder actuators that the piston rod of this piston constitutes.In addition, flange that need be integrally formed with this earthen pipe, be formed with the patchhole that inserts for attached bolt in this flange, this bottom is provided with the attachment that this attached bolt of a plurality of confessions is screwed into, these a plurality of attachment are placed on diverse location along the linear movement direction of this piston, and this attachment arrangement comprises this patchhole, these a plurality of attachment, this attached bolt and is screwed in nut on this attached bolt.

What need is, this patchhole is one of first patchhole and second patchhole, and this first patchhole and this second patchhole are formed on different positions along the vertical direction of the linear movement direction of this piston and edge and the linear movement direction of this piston.Neededly be, this attached bolt is one in first attached bolt that inserts this first patchhole and the second attached bolt that inserts this second patchhole, and this attachment comprises first attachment hole that is screwed with this first attached bolt and second attachment hole that is screwed with this second attached bolt.

With this structure, this first patchhole and second patchhole are arranged in the flange along the linear movement direction of this linear actuators and along the diverse location on the direction vertical with this linear movement direction, and these patchholes that this flange utilization has this position relation are attached to this bottom.For this reason, this comprise that the gas cylinder actuators of flange is attached to this bottom and not can on this linear movement direction and should be vertical and the direction of this linear movement direction on rock.Therefore, can prevent reliably that this gas cylinder actuators because of rocking that the two-dimentional rotary manipulation of this first clamping bar causes, therefore, can be convenient to reach the smooth operation of whole clamping device.

Description of drawings

Fig. 1 (a) is the side view according to the clamping device of first embodiment of the invention;

Fig. 1 (b) is the front view of this clamping device;

Fig. 1 (c) is the plane of this clamping device;

Fig. 1 (d) is the stereogram that is arranged at the bar cover of this clamping device;

Fig. 2 (a) is for illustrating the side view of this clamping device that is in clamped condition;

Fig. 2 (b) is in the not side view of this clamping device of clamped condition for illustrating;

Fig. 3 (a) reaches and (b) is respectively than Fig. 2 (a) and clamping device (b), and gas cylinder actuators is at the side view that is in this clamping device under this state of position that makes progress;

Fig. 4 (a) reaches and (b) is respectively than Fig. 3 (a) and clamping device (b), and gas cylinder actuators is at the side view that is in this clamping device under this state of position that makes progress;

Fig. 5 (a) is the side view according to the clamping device of second embodiment;

Fig. 5 (b) is the front view of this clamping device;

Fig. 6 is in not this side view according to the clamping device of second embodiment of clamped condition;

Fig. 7 is in not this side view according to the clamping device of second embodiment of clamped condition;

Fig. 8 is in not this side view according to the clamping device of second embodiment of clamped condition;

Fig. 9 is the side view of the clamping device of modification;

Figure 10 is the side view of the clamping device of another modification;

Figure 11 (a) is for being in the side view of the clamping device of clamped condition in the background technology; And

Figure 11 (b) is for being in the not side view of this clamping device of clamped condition.

The specific embodiment

(first embodiment)

Clamping device according to first embodiment of the invention hereinafter will be described with reference to the drawings.

To shown in 1 (c), clamping device 10 has steel fixed part 11 as Fig. 1 (a), and it is used for clamping device 10 is fixed on framework 14.Fixed part 11 is for L shaped and have baseplate part 12 and bottom 21, and baseplate part 12 extends laterally along horizontal plane in the bottom of fixed part 11, and bottom 21 forms vertically upward from baseplate part 12.Baseplate part 12 has a pair of preceding hole and the metapore (not shown) of inserting wherein for pair of bolts 15, and baseplate part 12 utilizes this that bolt 15 by this hole is fixed to framework 14.

Bottom 21 forms tabular, to extend along vertical and fore-and-aft direction.Be attached to rear end with the corresponding second bar attachment 23 of the front end of bottom 21, so that the bottom 21 and second clamping bar 22 are bonded together by the second represented clamping bar 22 of double dot dash line among Fig. 1 (a).Horn shape second junction surface 24 of steel is fixed on the upper end of the second bar attachment 23.

Be formed with attached board 26 in 21 rear lowers of bottom.Attached board 26 vertical extensions and the similar rectangular slab of shape.In the rear portion of attached board 26,, begin from the top to be formed with on first attachment hole 27b and first time attachment hole 27c the attachment hole 27a, first with regular intervening sequences along the back edge of attached board 26.In the front portion of attached board 26,, begin from the top to be formed with on second attachment hole 28b and second time attachment hole 28c the attachment hole 28a, second with regular intervening sequences along the leading edge of attached board 26.Each

attachment hole

27a, 27b, 27c, 28a, 28b and 28c pass attached board 26 and cross section is circle.Form internal thread in each hole.

In the present embodiment, on first among the attachment hole 27a, first attachment hole 27b and first time attachment hole 27c form first attachment hole 27, and on second among the attachment hole 28a, second attachment hole 28b and second time attachment hole 28c form second attachment hole 28.With the first attached bolt 29a be screwed into form first attachment hole 27 first among attachment hole 27b and the first time attachment hole 27c among the attachment hole 27a, first, and with the second attached bolt 29b be screwed into form second attachment hole 28 second among attachment hole 28b and the second time attachment hole 28c among the attachment hole 28a, second.

Bottom 21 in the present embodiment has three attachment, i.e. the last attachment that is made of attachment hole 28a on the attachment hole 27a and second on first, the middle attachment that is made of attachment hole 28b among the attachment hole 27b and second in first and the following attachment that is made of first time attachment hole 27c and second time attachment hole 28c.Should go up attachment, middle attachment and down attachment be held in place on the attached board 26 at rear portion of this bottom 21, to stagger mutually and to be of similar shape in vertical (highly) direction.

The rear portion of attached board 26 is provided with gas cylinder actuators 31, the linear actuators that its hydraulic fluid such as air of serving as reasons drives.Gas cylinder actuators 31 have vertically extendingly be roughly columniform earthen pipe 32, in earthen pipe 32 along straight-line piston 33 of the axis N of earthen pipe 32 and the piston rod 34 that extends towards the upside of earthen pipe 32 from the upper end of piston 33.

In the gas cylinder actuators 31, by hydraulic fluid being injected the lower end or the upper end of earthen pipe 32, piston 33 is rectilinear motion up or down, make by this piston rod 34 up or down rectilinear motion to obtain driving force.That is, in the gas cylinder actuators 31, piston rod 34 because of piston 33 in vertical direction rectilinear motion vertically straight line move.Shown in Fig. 2 (b), in the gas cylinder actuators 31, piston 33 and earthen pipe 32 lower end position contacting are made as the starting end of piston 33 (piston rod 34) linear motion range.In the accompanying drawing, omitted the inlet of this hydraulic fluid.The lower surface of piston 33 is attached with the beam (not shown), absorbs the vibrations that cause when contacting with the upper surface of earthen pipe 32 lower ends.

Bar cover 36 is attached to the upper end of earthen pipe 32.Shown in Fig. 1 (d), bar cover 36 is cylindrical and has the bar insertion section 36a of cross section for circle, is used for vertically extending piston rod 34 is inserted wherein.Be placed with the flange 37 of vertically extending similar rectangular slab on the outer surface of bar cover 36 highlightedly.That is, flange 37 is integrally formed with gas cylinder actuators 31.The top of flange 37 is formed with the first patchhole 37a of break-through flange 37, and the bottom of flange 37 is formed with the second patchhole 37b of break-through flange 37.That is, in flange 37, the first patchhole 37a and the second patchhole 37b are in vertical (highly) direction and all stagger mutually in a lateral direction.In other words, the first patchhole 37a and the second patchhole 37b stagger mutually along the linear movement direction of piston 33 in the gas cylinder actuators 31 (piston rod 34).

To shown in 1 (d), the first attached bolt 29a inserts the first patchhole 37a and the second attached bolt 29b inserts the second patchhole 37b as Fig. 1 (a).In addition, the left side of patchhole 37a and 37b increases to hold the head of the first attached bolt 29a and the second attached bolt 29b respectively.Be under the right lateral surface state of contact of the left-hand face of flange 37 and attached board 26, by the first attached bolt 29a is inserted among the first patchhole 37a, and the first attached bolt 29a is screwed in first attachment hole 27 one, thereby flange 37 is fixed to bottom 21.In addition, by the second attached bolt 29b is inserted among the second patchhole 37b, and with the second attached bolt 29b be screwed into first attachment hole, 27 corresponding second attachment hole 28 in, thereby flange 37 is fixed to bottom 21.

That is, the first attached bolt 29a and the second attached bolt 29b are screwed in attachment on this, middle attachment and the following attachment when being inserted into the first patchhole 37a and the second patchhole 37b respectively.Attachment arrangement in the present embodiment is made of a plurality of attachment that are arranged on attached board 26 (go up attachment, middle attachment and attachment) down, the first patchhole 37a at flange 37 places that is arranged on bar cover 36 and the second patchhole 37b and a pair of attached

bolt

29a and 29b.

To shown in 1 (c), be provided with the 34a of pivotal attachment portion of the rear end that is pivoted to arm 41 as Fig. 1 (a) in the upper end of piston rod 34.Arm 41 is steel and the first arm attachment 43 with similar rectangular plate shape, so that first clamping bar 42 is attached to its front end.Be provided with last connecting portion 44 in the rear portion of arm 41 with fore-and-aft direction extension and similar rectangular plate shape.Thus, arm 41 forms L shaped on the whole.

The rear end of first clamping bar 42 is attached to the first arm attachment 43.Last junction surface 45 is fixed to the lower end of the first arm attachment 43.Last junction surface 45 is a steel, and is formed with the slot part 45a that engages with second junction surface, 24 upper surfaces on its lower surface.Last junction surface 45 forms engagement device with second junction surface 24, and goes up junction surface 45 and prevent being displaced sideways between bottom 21 and the arm 41 so that arm 41 directly be placed on bottom 21 directly over.When last junction surface 45 engaged with second junction surface 24, the mobile of piston 33 in the earthen pipe 32 was stopped.The position that last junction surface 45 is engaged with second junction surface 24 is made as the end end of piston 33 (piston rod 34) linear motion range.That is, in the gas cylinder actuators 31, piston 33 (piston rod 34) is at the starting end of this linear motion range and finish to move between the end.

In the attached board 26, on first among the attachment hole 27a, first attachment hole 27b and first time attachment hole 27c on the linear movement direction of piston 33 (piston rod 34), stagger mutually.In the attached board 26, on second among the attachment hole 28a, second attachment hole 28b and second time attachment hole 28c on the linear movement direction of piston 33 (piston rod 34), stagger mutually.Be in gas cylinder actuators 31 and be attached under 21 the state of bottom, the first patchhole 37a of flange 37 and the second patchhole 37b are staggering on the linear movement direction of piston 33 (piston rod 34) and on the direction perpendicular to this linear movement direction mutually.

That is, the upper end of pair of links 46 is pivoted to the rear end of the first arm attachment 43 and the front end of going up connecting portion 44 respectively.Each connecting rod 46 is made by rectangular steel plates, and connecting rod 46 connects the central authorities of bottom 21 and the central authorities of arm 41 respectively.That is, the upper end of each connecting rod 46 is provided with the last articulated section 46a that the central authorities to arm 41 pivot and support, and the lower end of each connecting rod 46 is provided with the pivot following articulated section 46b of support of central authorities to bottom 21.The intersection that close second bar attachment 23 of following articulated section 46b and attached board are 26.

The operation of clamping device 10 is now described.

In the clamping device 10, by rotating first clamping bar 42, thereby workpiece 50 is clamped between clamping

bar

22 and 42, as the middle double dot dash line representative of Fig. 2 (a) near the direction of second clamping bar 22.Shown in Fig. 2 (b),, the workpiece 50 that is clipped between clamping

bar

22 and 42 is entered not clamped condition by rotate first clamping bar 42 with the direction of leaving second clamping bar 22.

In the clamping device 10 that is in clamped condition not shown in Fig. 2 (b), when piston 33 in earthen pipe 32 from the starting end of this linear motion range when finishing the end rectilinear motion, the rectilinear motion of piston rod 34 is converted to rotatablely moving of arm 41 by connecting rod 46.Then, the rear end of arm 41 is pulled up, and correspondingly, arm 41 rotates with the direction near workpiece 50 by connecting rod 46.Therefore, shown in Fig. 2 (a), first clamping bar 42 is with the direction rotation near second clamping bar 22.Then, when the last junction surface 45 that constitutes this engagement device contacts with second junction surface 24, and during the end end of piston 33 these linear motion range of arrival, arm 41 stops operating and first clamping bar 42 is parked in the clamped position of workpiece 50, that is the position shown in Fig. 2 (a).At this moment, engage with the slot part 45a at last junction surface 45, with the front end placement appropriate location in vertical direction of clamping

bar

22 and 42 by top with second junction surface 24.

Then, in the clamping device that is in clamped condition 10 shown in Fig. 2 (a), when piston 33 in earthen pipe 32 from the end end of this linear motion range during towards the starting end rectilinear motion, the rectilinear motion of piston rod 34 is converted to rotatablely moving of arm 41 by connecting rod 46.Then, left behind in the rear end of arm 41, and correspondingly, arm 41 rotates with the direction of leaving workpiece 50 by connecting rod 46.Therefore, shown in Fig. 2 (b), first clamping bar 42 is to leave the direction rotation of second clamping bar 22.Then, when the piston 33 following end in contact with earthen pipe 32, and when arriving the starting end of this linear motion range, arm 41 stops operating and first clamping bar 42 stops at final holding fix, that is, and and the position shown in Fig. 2 (b).

In production scene, when moving through predetermined mobile route, workpiece 50 is carried out continuous processing as factory.In order to improve productivity ratio, the mobile route of workpiece 50 is judged to select the shortest possible path.In the clamping device 10 of present embodiment, need suitably to adjust the holding fix of first clamping bar 42, so that first clamping bar 42 can not hinder moving of the workpiece 50 that is in clamped condition not according to size, shape and the moving direction of workpiece 50.When this holding fix that is in first clamping bar 42 of clamped condition not when workpiece 50 is too far away the clamped condition required time is not long because first clamping bar 42 is converted to from clamped condition, has therefore increased the risk that reduces productivity ratio.

Thus, in the clamping device 10 in the present embodiment, be in the not holding fix, particularly horizontal level of first clamping bar 42 of clamped condition, can change in case of necessity and can not limit the moving direction of workpiece 50.Promptly in the clamping device 10 of present embodiment, can regulate and be in the not final holding fix of first clamping bar 42 of clamped condition by changing attachment location that earthen pipe 32 is attached to bottom 21 along the linear movement direction of piston 33.Because clamping device 10 is provided with attachment arrangement earthen pipe 32 adjustable grounds is attached to bottom 21, therefore can be easily be in the not final holding fix of first clamping bar 42 of clamped condition by utilizing adjusting device that the attachment location of earthen pipe 32 is regulated, regulating.

In the clamping device 10 shown in Fig. 2 (a) and 2 (b), in the first attached bolt 29a that constitutes this attachment arrangement and the first patchhole 37a and the second patchhole 37b that the second attached bolt 29b is being inserted into flange 37 respectively, be attached to down attachment (first time attachment hole 27c and second time attachment hole 28c)., in the clamping device 10 shown in Fig. 2 (a) and 2 (b), compare the position under earthen pipe 32 is placed on the clamping device 10 shown in Fig. 3 (a) and 3 (b) and Fig. 4 (a) and 4 (b) for this reason.Thus, piston 33 stops to move of piston rod 34 by this in the following end in contact of this upper/lower positions and earthen pipe 32.Therefore, compare with the situation shown in Fig. 3 (b) and 4 (b), the final holding fix of first clamping bar 42 among Fig. 2 is provided with by the back.Thereby, guaranteed that there is bigger space 21 tops, bottom, and workpiece 50 can move backward above bottom 21.

On the other hand, in the clamping device 10 shown in Fig. 3 (a) and 3 (b), the first attached bolt 29a and the second attached bolt 29b are fixed to attachment in this (in first among the attachment hole 27b and second attachment hole 28b) when being inserted into the first patchhole 37a and the second patchhole 37b.In the clamping device 10 shown in Fig. 4 (a) and 4 (b), the first attached bolt 29a and the second attached bolt 29b are attached to attachment on this (on first on the attachment hole 27a and second attachment hole 28a) when being inserted into the first patchhole 37a and the second patchhole 37b.

Thus, in the clamping device 10 shown in Fig. 3 (a) and 3 (b), compare the forward setting of final holding fix of first clamping bar 42 with the situation shown in Fig. 2 (b).Therefore, the narrower and workpiece 50 in the space of 21 tops, bottom must not only above bottom 21, move and can't be in the bottom 21 rear portion move.Yet, in clamping device shown in Figure 3 10, because the anglec of rotation of first clamping bar 42 is less than the anglec of rotation of first clamping bar 42 of Fig. 2, advantageously, can be apace from this clamped condition be converted to not clamped condition and never clamped condition be converted to clamped condition.

In addition, in the clamping device 10 shown in Fig. 4 (a) and 4 (b), compare with the situation of Fig. 3 (b), the final holding fix of first clamping bar 42 is forward setting.Therefore, the space on the bottom 21 is narrower, limits the moving range of workpiece 50 by this.Yet, in the clamping device 10 shown in Fig. 4 (a) and 4 (b), compare with the clamping device 10 shown in Fig. 2 (a) and 2 (b) and Fig. 3 (a) and 3 (b), because the anglec of rotation minimum of first clamping bar 42, advantageously, can be converted to not clamped condition from clamped condition especially apace, vice versa.

Now advantage is described according to the foregoing description.

(1) in the clamping device 10 of present embodiment, this attachment arrangement is placed between bottom 21 and the gas cylinder actuators 31, so just can regulate the attachment location that gas cylinder actuators 31 is attached to bottom 21 along the linear movement direction of piston 33.In the clamping device 10, regulate the attachment location of this earthen pipe 32, can change and be in the not final holding fix of first clamping bar 42 of clamped condition by using this attachment arrangement.For this reason, in this clamping device 10, can rely on simple structure easily to regulate the final holding fix of first clamping bar 42.

(2) be in the not final holding fix of first clamping bar 42 of clamped condition by using this attachment arrangement to regulate the attachment location of this earthen pipe 32, can changing.That is, owing to need not to use isolated part or adjustment screw to change and be in the not final holding fix of first clamping bar 42 of clamped condition, avoided because of using the number of spare parts that isolated part or adjustment screw cause and the increase of weight.

(3) in the clamping device 10, gas cylinder actuators 31 is attached to bottom 21 in the position of bar insertion section 36a.Because the guiding that bar insertion section 36a moves piston rod 34 plays an important role and gas cylinder actuators 31 is fixed on bar insertion section 36a, therefore can easily reduce the deflection that moves the piston rod 34 that is caused by piston 33, thus, arm 41 can smoothly rotate.

(4) in the clamping device 10, gas cylinder actuators 31 is by being fixed to bottom 21 with the integrally formed flange 37 of bar cover 36.Bottom 21 is provided with a plurality of attachment that are arranged on diverse location along the linear movement direction of piston 33 (piston rod 34).Flange 37 is provided with the first patchhole 37a and the second patchhole 37b, wherein is inserted with the first attached bolt 29a and the second attached bolt 29b.In the clamping device 10, by the first attached bolt 29a and the second attached bolt 29b being inserted the first patchhole 37a and the second patchhole 37b respectively and in a plurality of attachment, selecting the attachment location of the first attached bolt 29a and the second attached bolt 29b, can be attached to the attachment location of bottom 21 at the linear movement direction adjusted flange 37 of piston rod 34.Therefore, rely on simple especially structure, just can easily regulate and be in the not holding fix of first clamping bar 42 of clamped condition.

(5) in the clamping device 10 of present embodiment, the first patchhole 37a and the second patchhole 37b are arranged on the linear movement direction of piston rod 34 in the flange 37 and perpendicular to the different parts on the direction of this linear movement direction.Thus, because flange 37 is attached to each attachment by patchhole 37a and the 37b that utilization has this position relation, the gas cylinder actuators 31 that comprises flange 37 tightly is fixed to bottom 21 and can rock.Therefore, can reliably avoid rocking of gas cylinder actuators 31 that the two-dimentional rotary manipulation because of arm 41 causes, thus, the operation of whole clamping device 10 can be able to smooth operation.

(6) in the clamping device 10 of present embodiment, under the clamped condition of workpiece 50, arm 41 positively is bonded on the appropriate location on 21 top, bottom by utilizing this engagement device, and workpiece 50 can clamp with being stabilized.Thus, in the clamping device 10, even when gas cylinder actuators 31 with respect to the Level Change of bottom 21, can make moving up of piston 33 stop at appropriate location in the earthen pipe 32.Therefore, in the clamping device with this attachment arrangement 10 of present embodiment, can use this engagement device that the position of first clamping bar 42 that is in clamped condition is optimized.In addition, this engagement device front end of can be used for preventing first clamping bar 42 moves with respect to the front end of second clamping bar 22.

(second embodiment)

Then, the second embodiment of the present invention is described with reference to figure 5 (a) to 8.Give identical drawing reference numeral with the first embodiment components identical among second embodiment, and the descriptions thereof are omitted.

Clamping device 60 shown in Fig. 5 (a) and 5 (b) has and vertically reaches the tabular bottom 61 that fore-and-aft direction extends and have steel fixed part 62, and this steel fixed part 62 is by bolt 63a and be screwed in the right lateral surface that nut 63b on the bolt 63a is fixed to bottom 61.Clamping device 60 is fixed on the framework of being represented by the double dot dash line among Fig. 5 (a) and 5 (b) 14 by fixed part 62.Perhaps, can on the right lateral surface of bottom 61 and left-hand face, all be fixed with fixed part 62, and clamping device 60 is fixed to framework 14 by these two fixed parts 62.

Second clamping bar of representing by the double dot dash line among Fig. 5 (a) 64 be attached to the corresponding second bar attachment 65 of the front end of this bottom 61 on.Second junction surface 66 is fixed to the upper end of the second bar attachment 65.Bottom attachment plate 67 is fixed to by bolt 82 in the both side surface of 61 rear lower each.Shown in Fig. 5 (b), in the bottom of each attachment plate 67, from the top of attachment plate 67 begin with regular intervening sequences be formed with attachment hole 67a, attachment hole 67b and attachment hole 67c down.Bottom 61 among second embodiment has three attachment, i.e. the last attachment that is made of last attachment hole 67a, the middle attachment that is made of middle attachment hole 67b and the following attachment that is made of attachment hole 67c down.Upward attachment, middle attachment and following attachment are arranged on the position of staggering mutually on vertical (highly) direction of attachment plate 67 and are of similar shape for these.

The rear portion of attached board 67 is attached with gas cylinder actuators 68, its with first embodiment in the same, as the linear actuators that drives by hydraulic fluid such as air.In the gas cylinder actuators 68, piston rod 71 is because of the vertical line motion of piston 70 in earthen pipe 69 moving linearly in vertical direction.

Bar cover 72 is attached to the upper end of earthen pipe 69.Nut 74 is screwed in the upside of bar cover 72.Be placed with support 73 between bar cover 72 and the nut 74.Support 73 has the maintaining part 76 that remains between bar cover 72 and the nut 74, and the downward flange 77 that extends of the axis N from this maintaining part 76 along earthen pipe 69.Flange 77 extends to the both sides of earthen pipe 69 with the radial direction around the axis N of earthen pipe 69.Flange 77 on the both sides of this axis N, be formed with patchhole 77a.

Form patchhole 77a so that attached bolt 79 is inserted wherein.By attached bolt 79 is inserted the attachment hole 67a to 67c on the attachment plate 67 and nut 81 is screwed on the attached bolt 79 and flange 77 is fixed to the attachment plate 67 of bottom 61 from patchhole 77a.That is, gas cylinder actuators 68 is attached to bottom 61 by attachment plate 67 and flange 77 (support 73).Attached bolt 79, nut 81, last attachment hole 67a, middle attachment hole 67b and following attachment hole 67c and patchhole 77a form the attachment arrangement among second embodiment.

The lower ending pivot of a pair of first connecting rod 85 is connected to the epimere of piston rod 71, and the upper end of first connecting rod 85 is pivoted to the second connecting rod 86 that is arranged on first connecting rod 85 outsides.Second connecting rod 86 is pivoted to first end of the third connecting rod 87 on the surface, the left and right sides that is separately positioned on second connecting rod 86 inboards and second connecting rod 86.Second end of third connecting rod 87 is pivoted to arm 88.

First clamping bar of being represented by the double dot dash line among Fig. 5 (a) 89 is attached to and the corresponding first bar attachment 88a of the front end of this arm 88.First junction surface 90 is fixed to the lower end of arm 88.First junction surface 90 forms engagement device with second junction surface 66, and first junction surface 90 make the clamping bar 89 of winning can directly be placed on second clamping bar 64 directly over.The left and right sides of bottom 61 is fixed with position control section 92.This position control section 92 is placed on the both sides of first clamping bar 89 that is in clamped condition to control first clamping bar 89 displacement in a lateral direction.

In the clamping device 60, when piston 70 in earthen pipe 69 from the starting end rectilinear motion of this linear motion range when finishing end, the rectilinear motion of piston rod 71 is converted to rotatablely moving of arm 88 by first connecting rod 85, second connecting rod 86 and third connecting rod 87.The rear end of arm 88 is pulled up then, and correspondingly, arm 88 rotates with the direction near workpiece 50 by first connecting rod 85, second connecting rod 86 and third connecting rod 87.

Therefore, first clamping bar 89 is with the direction rotation near second clamping bar 64.Then, when first junction surface 90 that constitutes this engagement device contacts with second junction surface 66, and during the end end of piston 70 these linear motion range of arrival, arm 88 stops operating and first clamping bar 89 is parked in the clamped position of workpiece 50, that is position as shown in Figure 6.

Then, in the clamping device that is in clamped condition 10 shown in Fig. 5 (a), when piston 70 in earthen pipe 69 from the end end of this linear motion range during towards the starting end rectilinear motion, the rectilinear motion of piston rod 71 is converted to rotatablely moving of arm 88 by first connecting rod 85, second connecting rod 86 and third connecting rod 87.Then, left behind in the rear end of arm 88, and correspondingly, arm 88 is to leave the direction rotation of workpiece 50.Therefore, as shown in Figure 6, first clamping bar 89 is to leave the direction rotation of second clamping bar 64.Then, when the following end in contact of piston 70 and earthen pipe 69 and when getting back to the starting end of this linear motion range, arm 88 stops operating and first clamping bar 89 stops at final holding fix, that is, and and position as shown in Figure 6.

In the clamping device 60 of second embodiment, as shown in Figure 6, insert at attached bolt 79 under the state of following attachment (following attachment hole 67c) of attachment plate 67, nut 81 is screwed on the attached bolt 79.Thus, in clamping device shown in Figure 6 60,, after the final holding fix of first clamping bar 89 leans on, make workpiece 50 move backward by this and cross bottom 61 because the position of earthen pipe 69 under being positioned at compared with the situation of Fig. 7 and Fig. 8.

In clamping device shown in Figure 7 60, in being somebody's turn to do, attached bolt 79 insertions under the state of attachment (the middle attachment hole 67b of attachment plate 67), nut 81 is screwed on the attached bolt 79.Thus, in clamping device shown in Figure 7 60, compare with the situation of Fig. 6, the final holding fix of first clamping bar 89 is forward.

In clamping device shown in Figure 8 60, insert under the state that is somebody's turn to do attachment (the last attachment hole 67a of attachment plate 67) at attached bolt 79, nut 81 is screwed on the attached bolt 79.Thus, in clamping device shown in Figure 8 60, compare with the situation of Fig. 6 and Fig. 7, the final holding fix of first clamping bar 89 is forward.

Above-described embodiment may be modified as follows.

Among first embodiment, first attachment hole 27 can be set in flange 37 and second attachment hole 28 (a plurality of attachment) replaces the first patchhole 37a and the second patchhole 37b, and the first patchhole 37a can be set on attached board 26 and the second patchhole 37b replaces first attachment hole 27 and second attachment hole 28 (a plurality of attachment).

Among first embodiment, the first slotted hole (not shown) can be set on attached board 26, it is as with attachment hole 27a and first time attachment hole 27c first attachment hole connected vertically on first, and the nut of the right lateral surface by being arranged on attached board 26 is fixed to attached board 26 with the front end of the first attached bolt 29a.The second slotted hole (not shown) can be set on attached board 26, it is as with attachment hole 28a and second time attachment hole 28c second attachment hole connected vertically on second, and the nut of the right lateral surface by being arranged on attached board 26 is fixed to attached board 26 with the front end of the second attached bolt 29b.

Among first embodiment, can the other side (attached board 26) of bottom 21 be connected to flange 37 by using the first attached bolt 29a or the second attached bolt 29b.Like this, can omit corresponding patchhole 37a and 37b and attachment hole 27 and 28.Yet, under this situation, need between attached board 26 and flange 37, be provided with and prevent the rotation preventive apparatus of flange 37 around attached board 26 rotations.The trailing edge that this rotation preventive apparatus can be by making flange 37 is crooked to the right, thus the device that the trailing edge of this flange 37 is engaged with the trailing edge of attached board 26.This rotation preventive apparatus can be when flange 37 is fixed to attached board 26, the device that the outer surface of bar cover 36 is contacted with the trailing edge of attached board 26.

Although the attachment arrangement of each embodiment is that these three attachment of attachment form under being reached by last attachment, middle attachment, there is no particular restriction for the quantity of the attachment that is provided with on the attached board 26 of bottom 21, as long as this quantity is more than or equal to 2.

Among first embodiment, flange 37 can be arranged on the outer surface of earthen pipe 32 rather than the outer surface of bar cover 36.

Among first embodiment, this attachment arrangement can be arranged between bottom 21 and the earthen pipe 32 rather than between bottom 21 and the bar cover 36.For example, can be in the bottom 21 opposite side fixedly install cylindrical parts, and the outer surface of earthen pipe 32 can be fixed in this cylindrical parts, therefore can on short transverse, adjust this position.

Among first embodiment, attachment (goes up

attachment hole

27a and 28a,

middle attachment hole

27b and 28b, and down

attachment hole

27c and 28c) between spacing, the perhaps distance between on the linear movement direction of piston rod 34 them, needn't be for constant, but can the holding fix of first clamping bar 42 of clamped condition is provided with arbitrarily according to being in not.

Among second embodiment, spacing between the attachment (go up attachment hole 67a, middle attachment hole 67b and reach attachment hole 67c down), the perhaps distance between on the linear movement direction of piston rod 71 them, needn't be for constant, but can the holding fix of first clamping bar 89 of clamped condition is provided with arbitrarily according to being in not.

Among each embodiment,

second clamping bar

22 and 64 needn't be fixed to bottom 21 and 61 separately.For example, second clamping

bar

22,64 can be fixed to from framework 14 vertically disposed fixed heads.

The present invention can be embodied as clamping device 95 as shown in Figure 9.In the clamping device 95, arm 97 be pivoted to the bottom 96 and, the second clamping bar 96a be attached to the bottom 96.Be formed with the slotted hole 97a of oblique extension on the arm 97, and the joint 98 that is pivoted to slotted hole 97a is fixed to the piston rod 100 as the gas cylinder actuators 99 of linear actuators.The first clamping bar 97b is attached to arm 97.

That is, this clamping device 95 allows the arm 97 can be under the situation of not using jockey and rotate.Bottom 96 is provided with the attachment (go up attachment 94a, middle attachment 94b and reach attachment 94c down) that forms attachment arrangement.Flange 102 places of gas cylinder actuators 99 upper boom covers 101 are formed with the first jack 102a and the second jack 102b that constitutes attachment arrangement.

The present invention can be shown in Figure 10 clamping device 103 realize.Clamping device 103 uses not no bar electric actuator with piston rod as linear actuators.In the clamping device 103, arm 106 is pivoted to the bottom 105 and second clamping bar 105a and is attached to bottom 105.Be formed with the slotted hole 106a of oblique extension on the arm 106.The attaching parts 107 that are pivoted to slotted hole 106a can be passed through no bar electric actuator 104 moving linearlies.The first clamping bar 106b is attached to arm 106.Bottom 105 is provided with the attachment that forms attachment arrangement (go up attachment 108a, middle attachment 108b and attachment 108c) down, and does not have and be formed with the patchhole 104a that constitutes attachment arrangement on the bar electric actuator 104.

Can use by the driving force of motor to come the swing roller leading screw, come the linear actuators of carriage release lever to replace coming by the hydraulic pressure mobile piston, by this linear actuators of rectilinear motion piston rod by this.

Hydraulic cylinder can be used as gas cylinder actuators 31.

Among each embodiment, in the

clamping device

10,60,

arm

41,88 is separately positioned on the top of bottom 21,61.Yet

arm

41,88 can be separately positioned on the side and the below of bottom 21,61.

Claims

1. clamping device that is used to clamp or unclamp workpiece between first clamping bar and second clamping bar comprises:

The bottom;

The linear actuators that is attached to this bottom and can moves linearly, wherein this linear actuators for by earthen pipe, in this earthen pipe along the straight-line piston of axis direction and be attached to the gas cylinder actuators that the piston rod of this piston constitutes; And

Arm, its have this first clamping bar and make this first clamping bar based on the rectilinear motion of this linear actuators with near or leave the direction rotation of this second clamping bar,

This clamping device is characterised in that, is provided with attachment arrangement between this bottom and this linear actuators, and

This earthen pipe is provided with flange, is formed with the patchhole that inserts for attached bolt in this flange, and this bottom is provided with the attachment that this attached bolt of a plurality of confessions inserts, and these a plurality of attachment are arranged on diverse location along the linear movement direction of this piston,

This attachment arrangement comprises this patchhole, these a plurality of attachment and this attached bolt,

Wherein, by will this attached bolt inserting this patchhole and in these a plurality of attachment locations, select the attachment location of this attached bolt, be able to the attachment location that this flange is attached to this bottom be adjusted along the straight line moving direction of this piston rod.

2. clamping device as claimed in claim 1 is characterized in that, when this attached bolt inserted the patchhole of this attachment arrangement, this attached bolt was threaded into the attachment of this flange.

3. clamping device as claimed in claim 1 is characterized in that this attachment arrangement comprises nut, and wherein after described attached bolt inserted the attachment of this flange, this nut was screwed on this attached bolt.

4. clamping device as claimed in claim 2, it is characterized in that, this patchhole comprises first patchhole and second patchhole, and this first patchhole and this second patchhole are along the linear movement direction of this piston and along being formed on different positions with the vertical direction of the linear movement direction of this piston

Wherein, this attached bolt comprises first attached bolt that inserts this first patchhole and the second attached bolt that inserts this second patchhole, and

Wherein, this attachment comprises first attachment hole that is screwed with this first attached bolt and second attachment hole that is screwed with this second attached bolt.

5. as each described clamping device in the claim 1 to 4, it is characterized in that, be provided with engagement device between this bottom and this arm, and be under the clamped condition of this workpiece, this knee-joint of this engagement device and top, this bottom closes.

6. clamping device as claimed in claim 1, it is characterized in that, the upper end of this earthen pipe is provided with the bar cover, the outer surface of this bar cover is provided with the outstanding flange of side direction, being provided with patchhole in this flange is used for this attached bolt is inserted wherein, this attached bolt inserts this bottom, is formed with the slotted hole that extends with vertical direction in this bottom, and this attachment arrangement comprises this patchhole, this slotted hole, this attached bolt and is screwed in nut on this attached bolt.