CN208811953U - A kind of clamping device - Google Patents

Abstract

The utility model discloses a kind of clamping devices, comprising: is used to support the supporting element of workpiece；One end set on supporting element, the limited block for carrying out lateral Displacement to workpiece；The claw being oppositely arranged with limited block；For driving claw close to or far from limited block with the cylinder of clamp or release workpiece, claw is connected with the piston rod of cylinder, and the cylinder body of cylinder is equipped with the dust cover for protecting piston rod between one end and claw of claw.The clamping device is not easy stuck, can guarantee validity when it is used in the environment of having dust.

Description

A kind of clamping device

Technical field

The utility model relates to mechanical frock clamp arts, more specifically to a kind of clamping device.

Background technique

In mobile phone industry, when processing the inner cavity of cell phone rear cover, need to carry out clamping position to cell phone rear cover.

In the prior art, driving device driving mechanical transmission mechanism movement is generallyd use, the final band of mechanical transmission mechanism is made Dynamic clamping jaw clamps the opposite both ends of cell phone rear cover.Mechanical transmission mechanism generally includes link mechanism and the end with link mechanism Connected sliding block, under the action of driving device, link mechanism band movable slider is moved along guide rail, to make to be arranged on sliding block Clamping jaw clamps cell phone rear cover.

However, in practical applications, due to the influence of dust and impurity etc. in environment, it will usually cause the stuck of sliding block Or movement is unsmooth, therefore, it is necessary to shut down the processing stuck exception of sliding block, or regularly shuts down the dust impurities of cleaning guide rail area, Production efficiency is influenced, brings inconvenience to the embedded SMA actuators of cell phone rear cover.

In conclusion how to provide it is a kind of be not easy stuck clamping device, be that current those skilled in the art are urgently to be resolved The problem of.

Utility model content

In view of this, the clamping device is not easy stuck, Neng Goubao the purpose of the utility model is to provide a kind of clamping device Demonstrate,prove validity when it is used in the environment of having dust.

To achieve the goals above, the utility model provides the following technical solutions:

A kind of clamping device, comprising:

It is used to support the supporting element of workpiece；

One end set on the supporting element, the limited block for carrying out lateral Displacement to the workpiece；

The claw being oppositely arranged with the limited block；

For driving the claw close to or far from the limited block with the cylinder of workpiece described in clamp or release, the card Pawl is connected with the piston rod of the cylinder, and the cylinder body of the cylinder is equipped between one end and the claw of the claw and uses In the dust cover for protecting the piston rod.

Preferably, the quantity of the limited block is two, is respectively arranged on the adjacent both ends of the supporting element；The claw Quantity is two, is oppositely disposed one by one with two limited blocks respectively.

Preferably, the piston rod includes corresponding with two claws connected First piston bar and second piston respectively Bar, the cylinder further include the first piston being connected with the First piston bar and are connected with the second piston bar to live with second It fills in, is equipped in the cylinder body:

The first cavity for sliding the first piston in it and with it is in first cavity described first living First gas channels of side connection where stopper rod；

The second cavity for sliding the second piston in it and with it is in second cavity described second living Second gas channels of side connection where stopper rod；

Deviate from the side of the First piston bar in third gas channels, the third gas channels and first cavity Connection, and be connected to the side for deviating from the second piston bar in second cavity.

Preferably, at least one of the First piston bar and the second piston bar with for driving corresponding claw The reset spring for compressing the workpiece is connected.

Preferably, the cylinder further include:

With the First piston bar the first guide rod disposed in parallel and what is slidably cooperated with first guide rod first lead To slot, first guide rod is connected with the First piston bar by the first connecting plate；

With the second piston bar the second guide rod disposed in parallel and what is slidably cooperated with second guide rod second lead To slot, second guide rod is connected with the second piston bar by the second connecting plate；The First piston bar and described second Piston rod passes through first connecting plate and second connecting plate respectively and is connected with corresponding claw.

Preferably, between first guide rod and first guide groove and second guide rod is led with described second Slidably cooperate to brassiness bushing is passed through between slot.

Preferably, the position that the claw and the limited block are used to contact with the workpiece is equipped with for preventing from crushing The elastic component of the workpiece.

Preferably, the elastic component is equipped with the back-off for blocking the edge bend of the workpiece.

Preferably, the claw is detachably connected with the piston rod.

Clamping device provided by the utility model in use, workpiece is placed on supporting element, and makes limited block to workpiece Side carry out lateral Displacement, then, start cylinder, make cylinder piston rod drive claw towards close to limited block direction move It is dynamic, make claw contact workpiece and certain pressing force that presses to workpiece, at this moment, limited block plays the work for stopping limit to workpiece With, thus claw and limited block collective effect, by Workpiece clamping；When work pieces process is completed, by the piston rod band for making cylinder Dynamic claw is mobile towards the direction far from limited block, can unclamp workpiece.

It can thus be seen that clamping device provided by the utility model drives claw close to or far from limit by cylinder Block is avoided with clamp or release workpiece and is driven claw mobile using mechanical transmission mechanism in the prior art, therefore, can be kept away Exempt from the mechanical transmission mechanism phenomenon stuck because of dust or impurity；Meanwhile in one end close to claw of the cylinder body of cylinder and claw Between be equipped with dust cover, when piston rod stretch out when, which can protect the exposed piston rod outside cylinder body, avoid piston rod Because dust impurities etc. are stuck, the smoothness and stationarity of cylinder moving ensure that, to ensure that the clamping device is having dust In the environment of use when validity.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also Other attached drawings can be obtained according to the attached drawing of offer.

Fig. 1 is the structural schematic diagram of clamping device specific embodiment provided by the utility model；

Fig. 2 is the main view of cylinder in Fig. 1；

Fig. 3 is the sectional view along A-A of cylinder shown in Fig. 2；

Fig. 4 is the gas channels schematic diagram of cylinder shown in Fig. 2；

Fig. 5 is the partial enlarged view of B in Fig. 1.

Appended drawing reference of the Fig. 1 into Fig. 5 is as follows:

1 it is supporting element, 2 be limited block, 3 be claw, 4 be cylinder, 41 be First piston bar, 42 is second piston bar, 43 It is second piston for first piston, 44,45 be the first guide rod, 46 be the second guide rod, 471 be the first air inlet, 472 is first to go out Stomata, 481 be the second air inlet, 482 be the second venthole, 491 be third air inlet, 492 be third venthole, 5 be dust-proof Cover, 6 be reset spring, 7 be brassiness bushing, 8 be elastic component, 81 be back-off.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The core of the utility model is to provide a kind of clamping device, which is not easy stuck, can guarantee that it is having Validity when being used in the environment of dust.

Fig. 1-Fig. 5 is please referred to, Fig. 1 is the structural schematic diagram of clamping device specific embodiment provided by the utility model； Fig. 2 is the main view of cylinder in Fig. 1；Fig. 3 is the sectional view along A-A of cylinder shown in Fig. 2；Fig. 4 is that the gas circuit of cylinder shown in Fig. 2 is logical Road schematic diagram；Fig. 5 is the partial enlarged view of B in Fig. 1.

The utility model provides a kind of clamping device, including being used to support the supporting element 1 of workpiece and for carrying out to workpiece The limited block 2 of lateral Displacement, limited block 2 are set to one end of supporting element 1, further include claw 3 and cylinder 4, claw 3 and limited block 2 It is oppositely arranged, to make claw 3 and limited block 2 when clamping workpiece, two sides opposite with workpiece offset respectively.Claw 3 and cylinder 4 Piston rod be connected, to drive claw 3 close to or far from limited block 2, when 4 driving card of cylinder by the stretching motion of piston rod Pawl 3 to limited block 2 close to when, claw 3 can apply certain pressing force to workpiece, meanwhile, limited block 2 to workpiece play blocking limit The effect of position, therefore, under the collective effect of claw 3 and limited block 2, by Workpiece clamping；When cylinder 4 drives claw 3 far from limit When the block 2 of position, claw 3 unclamps workpiece.

It should be noted that clamping device provided by the utility model is mainly used for solving passing by mechanical in the prior art Mechanical transmission mechanism is easy stuck problem when dynamic mechanism driving clamps workpiece, for this purpose, clamping device provided by the utility model Mechanical transmission mechanism is omitted, claw 3 is made directly to be connected with the piston rod of cylinder 4, by the movement of the piston rod of cylinder 4 come band Claw 3 is moved close to or far from workpiece, so that claw 3 blocks or unclamp workpiece.4 structure operation of cylinder is simple, and can be in severe item It works under part, to guarantee the reliability and stationarity of the movement of claw 3.

Meanwhile in order to avoid dust, the impurity in environment are influenced caused by 4 robust motion of cylinder, cylinder 4 is along piston The flexible stroke of bar is equipped with the dust cover 5 for protecting piston rod.That is, the cylinder body of cylinder 4 close to claw 3 one end with Dust cover 5 is equipped between claw 3, for the exposed piston rod outside cylinder body being protected, to avoid dust when piston rod stretches out Impurity etc. causes piston rod stuck or movement has some setbacks.

Preferably, dust cover 5 be can along the telescopic direction of piston rod stretch resilient dust boot 5 or scalable dust cover 5, To stretch with the flexible of piston rod.

It should be noted that the supporting element 1 in the utility model plays the role of support to workpiece, support work can be stablized Part, it is preferable that supporting element 1 is the support plate being bonded for the bottom surface with workpiece.Preferably, the non-supported face of supporting element 1 and gas The outer wall of cylinder block of cylinder 4 is connected.

The utility model to the specific structure and quantity of limited block 2 without limitation, as long as the work of lateral Displacement can be played With.

In conclusion clamping device provided by the utility model, in use, workpiece is placed on supporting element 1, and makes to limit Position block 2 carries out lateral Displacement to the side of workpiece, then, starts cylinder 4, and the piston rod of cylinder 4 is made to drive claw 3 towards close The direction of limited block 2 is mobile, makes 3 contact workpiece of claw and certain pressing force that presses to workpiece, at this moment, limited block 2 is to workpiece Play the role of stopping limit, thus 2 collective effect of claw 3 and limited block, by Workpiece clamping；When work pieces process is completed, lead to Crossing makes the piston rod of cylinder 4 drive claw 3 mobile towards the direction far from limited block 2, can unclamp workpiece.

It can thus be seen that clamping device provided by the utility model drives claw 3 close to or far from limit by cylinder 4 Block 2 is avoided with clamp or release workpiece and is driven claw 3 mobile using mechanical transmission mechanism in the prior art, therefore, can The phenomenon for avoiding mechanical transmission mechanism stuck because of dust or impurity；Meanwhile the cylinder body of cylinder 4 close to claw 3 one end with Dust cover 5 is equipped between claw 3, when piston rod stretches out, which can protect the exposed piston rod outside cylinder body, avoid Piston rod ensure that smoothness and stationarity that cylinder 4 moves, to ensure that the clamping device exists because dust impurities etc. are stuck There is validity when use in the environment of dust.

In order to keep the fixation position of workpiece more accurate and firm, on the basis of above-described embodiment, the quantity of limited block 2 It is two, is respectively arranged on the adjacent both ends of supporting element 1；The quantity of claw 3 is two, opposite one by one with two limited blocks 2 respectively Ground setting.

That is, the present embodiment is using two limited blocks 2, two sides adjacent to workpiece are limited respectively, meanwhile, it adopts The opposite both ends of workpiece are clamped with corresponding limited block 2 in two directions respectively with two claws 3.For example, in cell phone rear cover When embedded SMA actuators, when cell phone rear cover being fixed using the clamping device of the present embodiment, one of limited block 2 and right therewith The claw 3 answered can clamp cell phone rear cover upper opposite both ends along its length, another limited block 2 and corresponding claw 3 Cell phone rear cover upper opposite both ends in the width direction can be clamped, that is, the clamping device can make cell phone rear cover either in length Degree direction or width direction can be accurately positioned and fix.

It should be noted that the present embodiment is not specifically limited the structure of cylinder 4, cylinder 4 can be single pole cylinder, this When, the quantity of single pole cylinder is two, and two piston rods of two single pole cylinders are corresponding with two claws 3 respectively to be connected, that is, Individually drive corresponding claw 3 mobile using two independent single pole cylinders.

In view of the compactedness of 4 structure of cylinder, on the basis of above-described embodiment, cylinder 4 includes two piston rods, That is: corresponding with two claws 3 connected First piston bar 41 and second piston bar 42 respectively, First piston bar 41 is far from claw 3 One end be connected with first piston 43, the one end of second piston bar 42 far from claw 3 is connected with second piston 44；Cylinder 4 also wraps Cylinder body is included, the first cavity and the second cavity are equipped in cylinder body, first piston 43 and the first cavity are slidably connected, first piston First cavity is divided into two chambers by 43, respectively the chamber of 41 place side of First piston bar and away from First piston bar 41 The chamber of side；Second piston 44 and the second cavity are slidably connected, and the second cavity is divided into two chambers by second piston 44 Room, the respectively chamber of 42 place side of second piston bar and the chamber away from the side of second piston bar 42；Cylinder body be additionally provided with First gas channels of the chamber of 41 place side of First piston bar in first cavity, with second piston bar 42 in the second cavity Second gas channels of the chamber of place side and in the first cavity deviate from First piston bar 41 side chamber connect Third gas channels logical and with the chamber for the side for deviating from second piston bar 42 in the second cavity.

It is understood that when being inflated to third gas channels, under the action of the gas pressure of third gas channels, First piston 43 is slided along the first cavity, and second piston 44 is slided along the second cavity, First piston bar 41 and second piston bar 42 It is mobile to the direction far from corresponding limited block 2 that corresponding claw 3 is driven respectively, thus open two claws 3, so as to It is put into workpiece, or two claws 3 is made to unclamp workpiece, to take out workpiece.

When dying to third gas channels, being inflated to the first gas channels, make in the gas pressure of the first gas channels Under, first piston 43 slides in the first cavity in opposite direction, so that the drive of First piston bar 41 be made to be attached thereto Claw 3 is close to corresponding limited block 2, so that workpiece be clamped on the direction parallel with First piston bar 41.

When dying to third gas channels, being inflated to the second gas channels, make in the gas pressure of the second gas channels Under, second piston 44 is slided in the second cavity in opposite direction, so that the drive of second piston bar 42 be made to be attached thereto Claw 3 is close to corresponding limited block 2, so that workpiece be clamped on the direction parallel with second piston bar 42.

It should be noted that can be inflated simultaneously to the first gas channels and the second gas channels, so that workpiece is respectively It is parallel on the direction of First piston bar 41 and second piston bar 42 while being clamped.It is of course also possible to first logical to the first gas circuit Road inflation, then the second gas channels are inflated, or is inflated in the opposite order.

Further, specific channel of the present embodiment to the first gas channels, the second gas channels and third gas channels Shape without limitation, as long as can be with corresponding chamber.

It is understood that the first gas channels include the first air inlet 471 and the first venthole 472, the first air inlet 471 with the tracheae of supply gas for being connected to, the chamber of 41 place side of First piston bar in the first venthole 472 and the first cavity Connection；Second gas channels include the second air inlet 481 and the second venthole 482, and the second air inlet 481 is used for and supply gas Tracheae connection, the chamber of 42 place side of second piston bar in the second venthole 482 and the second cavity；Third gas channels Including third air inlet 491 and third venthole 492, third air inlet 491 is used to be connected to the tracheae of supply gas, and third goes out The chamber of side in stomata 492 and the first cavity far from First piston bar 41 and in the second cavity far from second piston The chamber of the side of bar 42.

In view of workpiece has dimensional discrepancy under normal conditions, therefore, in order to make the clamping device can adapt to have not With the precise positioning of the workpiece of dimensional discrepancy, on the basis of above-described embodiment, First piston bar 41 and second piston bar 42 At least one of with for drive corresponding 3 workpiece pressing of claw reset spring 6 be connected.

That is, inflating it after dying to third gas channels, to the first gas channels and/or the second gas channels Before, the reset spring 6 in the present embodiment makes First piston bar 41 and/or second piston bar 42 drive corresponding 3 clamping work of claw Part, since reset spring 6 has certain elasticity, the clamping position of claw 3 can be adjusted according to the dimensional discrepancy of workpiece It sets, to keep the clamped position flexibility for the claw 3 being connected with reset spring 6 adjustable, this can be to avoid claw 3 caused by workpiece It impacts and crushes.

Preferably, First piston bar 41 and second piston bar 42 are respectively connected with reset spring 6.

Preferably, one end of reset spring 6 offsets with inboard wall of cylinder block, the other end and 44 phase of first piston 43 or second piston It supports.

In view of First piston bar 41 and the stationarity of the movement of second piston bar 42 and in order to avoid 41 He of First piston bar Second piston bar 42 is turned round, and on the basis of above-described embodiment, cylinder 4 further includes and First piston bar 41 disposed in parallel the One guide rod 45 and with second guide rod 46 disposed in parallel of second piston bar 42, be equipped in cylinder body for the first guide rod 45 slidably The first guide groove connected and the second guide groove with 46 slidable connection of the second guide rod, the first guide rod 45 and First piston bar 41 are connected by the first connecting plate, and the second guide rod 46 is connected with second piston bar 42 by the second connecting plate, First piston bar 41 It is connected respectively by the first connecting plate and the second connecting plate with corresponding claw 3 with second piston bar 42.

That is, First piston bar 41 drives the first guide rod by the first connecting plate when First piston bar 41 is stretched 45 slide along the first guide groove, and when second piston bar 42 is stretched, second piston bar 42 drives second to lead by the second connecting plate Bar 46 is slided along the second guide groove.Since the first guide rod 45 and the first guide groove are slidably connected, the second guide rod 46 and second Guide groove sliding connection, the first guide groove define the glide direction of the first guide rod 45, play and lead to First piston bar 41 To effect, the second guide groove defines the glide direction of the second guide rod 46, plays the role of guiding to second piston bar 42, from And it is more stable to move First piston bar 41 and second piston bar 42.

It is understood that the first guide rod 45 is connected with the first connecting plate with First piston bar 41, the first guide rod 45 with The sliding connection of first guide groove, therefore, the first guide rod 45 can avoid First piston bar 41 and turn round along its own axis, together Reason, the second guide rod 46 can avoid second piston bar 42 and turn round along its own axis.

On the basis of above-described embodiment, matched between the first guide rod 45 and the first guide groove by the first casing slip It closes；Cooperated between second guide rod 46 and the second guide groove by the second casing slip, the first bushing and the second bushing are brass Matter bushing 7, to improve the smoothness and opposite second guiding of the second guide rod 46 of the opposite first guide groove sliding of the first guide rod 45 The smoothness of slot sliding.

It impacts and crushes caused by workpiece when claw 3 clamps workpiece to reduce, in above-mentioned any one embodiment On basis, the position that claw 3 and limited block 2 are used to contact with workpiece is equipped with the elastic component 8 for preventing from crushing workpiece.

That is, the present embodiment by elastic component 8 come buffering jack catches 3 to the pressing force and limited block 2 of workpiece to work The barrier force of part.

Preferably, elastic component 8 is PVC matter elastic component 8.

It is understood that considering chuck strength, it is preferable that claw 3 and limited block 2 are steel part.

In view of the edge part of workpiece usually has radian or bending etc., therefore, on the basis of above-described embodiment, bullet Property part 8 be equipped with back-off 81 for blocking the edge bend of workpiece.That is, the present embodiment is using back-off 81 claw, 3 work The edge bend of part, so that workpiece fixation is stronger.

For the ease of the replacement of claw 3, on the basis of above-described embodiment, claw 3 is detachably connected with piston rod.In card When pawl 3 is worn, or when replacing workpiece model, worn-out claw 3 or replacement different shaped can be replaced by way of disassembly Number corresponding claw 3 of workpiece.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.

Clamping device provided by the utility model is described in detail above.Specific case pair used herein The principles of the present invention and embodiment are expounded, and the above embodiments are only used to help understand, and this is practical new The method and its core concept of type.It is practical not departing from it should be pointed out that for those skilled in the art Under the premise of new principle, several improvements and modifications can be made to this utility model, these improvement and modification also fall into this In the protection scope of utility model claims.

Claims (9)

1. a kind of clamping device characterized by comprising

It is used to support the supporting element (1) of workpiece；

One end set on the supporting element (1), the limited block (2) for carrying out lateral Displacement to the workpiece；

The claw (3) being oppositely arranged with the limited block (2)；

For driving the claw (3) close to or far from the limited block (2) with the cylinder (4) of workpiece described in clamp or release, The claw (3) is connected with the piston rod of the cylinder (4), the cylinder body of the cylinder (4) close to the claw (3) one end with The dust cover (5) for protecting the piston rod is equipped between the claw (3).

2. clamping device according to claim 1, which is characterized in that the quantity of the limited block (2) is two, is set respectively In the adjacent both ends of the supporting element (1)；The quantity of the claw (3) is two, respectively one by one with two limited blocks (2) It is oppositely disposed.

3. clamping device according to claim 2, which is characterized in that the piston rod include respectively with two claws (3) corresponding connected First piston bar (41) and second piston bar (42), the cylinder (4) further include and the First piston bar (41) connected first piston (43) and be connected with the second piston bar (42) and second piston (44), set in the cylinder body Have:

The first cavity for sliding the first piston (43) in it and with it is in first cavity described first living First gas channels of side connection where stopper rod (41)；

The second cavity for sliding the second piston (44) in it and with it is in second cavity described second living Second gas channels of side connection where stopper rod (42)；

Deviate from the side of the First piston bar (41) in third gas channels, the third gas channels and first cavity Connection, and be connected to the side for deviating from the second piston bar (42) in second cavity.

4. clamping device according to claim 3, which is characterized in that the First piston bar (41) and the second piston At least one of bar (42) is connected with the reset spring (6) for driving corresponding claw (3) to compress the workpiece.

5. clamping device according to claim 3, which is characterized in that the cylinder (4) further include:

Slidably cooperate with the First piston bar (41) the first guide rod (45) disposed in parallel and with first guide rod (45) The first guide groove, first guide rod (45) is connected with the First piston bar (41) by the first connecting plate；

Slidably cooperate with the second piston bar (42) the second guide rod (46) disposed in parallel and with second guide rod (46) The second guide groove, second guide rod (46) is connected with the second piston bar (42) by the second connecting plate；Described first Piston rod (41) and the second piston bar (42) respectively by first connecting plate and second connecting plate with it is corresponding Claw (3) is connected.

6. clamping device according to claim 5, which is characterized in that first guide rod (45) and first guide groove Between and second guide rod (46) and second guide groove between slidably cooperated by brassiness bushing (7).

7. clamping device according to claim 1-6, which is characterized in that the claw (3) and the limited block (2) position for contacting with the workpiece is equipped with the elastic component (8) for preventing from crushing the workpiece.

8. clamping device according to claim 7, which is characterized in that the elastic component (8) is equipped with for blocking the work The back-off (81) of the edge bend of part.

9. clamping device according to claim 7, which is characterized in that the claw (3) detachably connects with the piston rod It connects.