CN208005462U - A kind of opening-closing clamp - Google Patents

Abstract

The utility model discloses a kind of opening-closing clamps.The opening-closing clamp includes：Fixed part has recess；Movable part is oppositely arranged with fixed part；Pedestal is fixed in fixed part；Cohesion device includes folding cylinder and check valve assembly, and folding cylinder is fixed in pedestal, and folding cylinder is for driving movable part to be moved to fixed part；Check valve assembly is installed on the inlet end of folding cylinder, check valve assembly includes check valve and the deflation thimble being sheathed in check valve, the outlet side of check valve is connected with the inlet end of folding cylinder, the first elastic component is configured between check valve and deflation thimble, the offer of the first elastic component makes elastic force of the deflation thimble far from check valve.Opening-closing clamp provided by the utility model can avoid gap and realize stable folding, reduces influence of the dust to fixture, improve quality of finish.

Description

A kind of opening-closing clamp

Technical field

The utility model is related to opening-closing clamp technical field more particularly to a kind of opening-closing clamps of inflatable.

Background technology

Currently, the closure of traditional opening-closing clamp be using fixture outside power plant allow fixture to be closed, recycle fixture On spring by sliding block top to spacing place, to realize effect that fixture remains closed.The opening of traditional opening-closing clamp is also profit Sliding block is taken at reset with power plant, after the position-limiting action of sliding block disappears, realizes the opening of fixture.

But traditional opening-closing clamp is when gripping objects are polished on polishing machine, due to polishing dust influence and The problem of sliding block itself is worn, the action of sliding block can be affected by it, and caused fixture that can gradually become folding and had some setbacks, or even folding Failure.And after being closed due to fixture, there are gaps between fixture master mold and male model, cause internal model that cannot hold tightly completely polished Object, it usually needs increase sealing strip to hold polished object tightly, but sealing strip is easy to cause polished object in polishing again Gap is generated so as to cause shaking, polishing effect is bad.In addition, polished object surface meeting at sealing strip position after polishing There is black impression.In addition, when throwing the side bonding wire of polished object, calorific value is larger, needs metal fixture to help to radiate, And since polished object and the heat dissipation performance of sealing strip contact position are bad, the phenomenon that easy ting produce nigrescence.

Utility model content

For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of opening-closing clamps, by adopting With the combination of fixed part, movable part and cohesion device design, it can be achieved that stablizing folding, hold tightly completely between polished object avoids Gap, while influence of the dust to fixture is reduced, improve quality of finish.

The purpose of this utility model adopts the following technical scheme that realization：

A kind of opening-closing clamp, including：Fixed part has recess；Movable part is oppositely arranged with the fixed part, docks shape At the space for accommodating polished object；Pedestal is fixed in the fixed part；Cohesion device, including folding cylinder and unidirectional valve group Part, the folding cylinder are fixed in the pedestal, and the folding cylinder is for driving the movable part to be moved to the fixed part； The check valve assembly is installed on the inlet end of the folding cylinder, and the check valve assembly includes check valve and is sheathed on described Deflation thimble in check valve, the outlet side of the check valve with it is described folding cylinder inlet end be connected, the check valve and The first elastic component is configured between the deflation thimble, the first elastic component offer makes the deflation thimble far from described unidirectional The elastic force of valve.

Further, further include air charging system, the air charging system includes bottom plate, it is first auxiliary to be fixed on the bottom plate The air inlet pipe and the second assistant cylinder for helping cylinder, being connected to the first assistant cylinder output end；First assistant cylinder is suitable In driving the air inlet pipe to be in contact with the inlet end of the check valve, second assistant cylinder is suitable for driving the deflation top Needle.

Further, further include back-off assembly, the back-off assembly includes the first guide pad, the second guide pad and is configured at The second elastic component between first guide pad and second guide pad, first guide pad are outer with the fixed part Peripheral wall connects, and second guide pad is connect with the periphery wall of the movable part, and the second elastic component offer makes the activity Elastic force of the portion far from the fixed part.

Further, second assistant cylinder is fixed in the output end of first assistant cylinder, second auxiliary The output end of cylinder is opposite with the deflation thimble, hollow piston rod and institute of the air inlet pipe by second assistant cylinder Check valve is stated to communicate.

Further, the air charging system further includes at least guiding axis being connected on the bottom plate, is sheathed on institute The connecting plate stated the linear bearing of guiding axis, be fixed in the linear bearing, the linear bearing are matched with guiding axis sliding It closes, the output end of first assistant cylinder is connected by the connecting plate with second assistant cylinder.

Further, one end of second assistant cylinder towards the deflation thimble is connected with sealing ring fixed plate, institute State the groove that on one side offers suitable for install sealing ring of the sealing ring fixed plate towards the deflation thimble；The check valve into Gas end, which is configured with, to be suitable for being bolted in institute with the matched unidirectional valve seal plate of the sealing ring fixed plate, the unidirectional valve seal plate State the inlet end of check valve.

Further, the pedestal is ring-like in closing, and is sheathed on the periphery wall of the fixed part and the movable part, described The output end that pedestal is right against the folding cylinder is equipped with trepanning；Pedestal one end opposite with the cohesion device is configured with Counterweight.

Further, the structure of the counterweight is identical as the cohesion device, and first elastic component is configured to first Spring, the second elastic component are configured to second spring.

Further, the fixed part is in semicircular arc, and the movable part is in semi arch corresponding with the fixed part Shape.

Further, the joint of the fixed part and the movable part is respectively configured at least one cohesion device.

Compared with prior art, the beneficial effects of the utility model are：Opening-closing clamp can be stablized, avoid gap, it can be complete It holds polished object tightly, and reduces influence of the dust to fixture, improve quality of finish.

Description of the drawings

Fig. 1 is a kind of dimensional structure diagram for opening-closing clamp that the utility model embodiment provides；

Fig. 2 is the exploded perspective view of opening-closing clamp in Fig. 1；

Fig. 3 is the sectional view of check valve assembly；

Fig. 4 is the dimensional structure diagram of air charging system.

In figure：10, fixed part；20, movable part；30, pedestal；31, trepanning；32, counterweight；40, back-off assembly；41, One guide pad；42, the second guide pad；43, second spring；50, cohesion device；51, cylinder is opened and closed；52, check valve assembly；521, Check valve；522, deflation thimble；5221, the first spring；523, unidirectional valve seal plate；60, air charging system；61, bottom plate；611, it leads To axis；612, connecting plate；613, linear bearing；62, the first assistant cylinder；63, air inlet pipe；64, the second assistant cylinder；641, close Seal fixed plate；642, sealing ring.

Specific implementation mode

Below in conjunction with the accompanying drawings and specific implementation mode, the utility model is described further, it should be noted that Under the premise of not colliding, new reality can be formed between various embodiments described below or between each technical characteristic in any combination Apply example.

It refers to shown in Fig. 1-3, shows a kind of structure for opening-closing clamp that the utility model embodiment provides, the folding Fixture includes：Fixed part 10, movable part 20, pedestal 30 and cohesion device 50.The fixed part 10 has recess.Movable part 20 with it is solid Determine portion 10 to be oppositely arranged, and the fixed part 10 docks the space for being formed and accommodating polished object with movable part 20.Pedestal 30 is solid It is connected to fixed part 10.Cohesion device 50 includes folding cylinder 51 and check valve assembly 52, and folding cylinder 51 is fixed in pedestal 30, single The inlet end of folding cylinder 51 is installed on to valve module 52, the check valve assembly 52 is including check valve 521 and is sheathed on check valve The outlet side of deflation thimble 522 in 521, check valve 521 is connected with the inlet end of folding cylinder 51, check valve 521 and deflation The first elastic component is configured between thimble 522, the offer of the first elastic component makes deflation thimble 522 far from the elastic force of check valve 521.

In this way, as shown in figure 3, compressed air is passed through from the inlet end of check valve 521, then from the outlet of check valve 521 End enters the inlet end of folding cylinder 51, and the piston rod of driving folding cylinder 51 stretches out, to push movable part 20 towards fixation Portion 10 moves, and finally realizes the closure of the opening-closing clamp, embraces polished object.Due to check valve 521 and deflation thimble 522 Setting, the compressed air being just passed through in folding cylinder 51 are locked in folding cylinder 51 so that the piston of folding cylinder 51 Bar provides constantly thrust to movable part 20, so that entire opening-closing clamp carries out spinning movement after holding polished object tightly, To realize polishing process, the setting of the folding cylinder 51 due to that can provide lasting thrust can effectively overcome in polishing process Opening-closing clamp is influenced by centrifugal force and the gap that generates.And after polishing, when needing to unclamp polished object, use External force overcomes the compression elasticity of the first elastic component to push deflation thimble 522 so that the deflation thimble 522 is along check valve 521 Inner wall to the outlet side of the check valve 521 move so that folding cylinder 51 in compressed air leak, then open and close gas The thrust that cylinder 51 acts on movable part 20 tapers into, and realizes the opening of opening-closing clamp.The opening-closing clamp of the inflatable closes It closes and unfolding mode is simple and efficient, and gripping performance is good, is not influenced by polishing dust, stability is high, improves product Quality of finish.In addition, the setting of check valve assembly 52, which can avoid the mating at folding 51 inlet end of cylinder, provides continuous driving force The pipeline in source efficiently solves the phenomenon that following the tracheae of folding cylinder 51 to be easily damaged because of high speed rotation, while also optimizing The structure of device.

As preferred embodiment, as shown in figure 4, the opening-closing clamp further includes air charging system 60, the air charging system 60 Including：Bottom plate 61, the first assistant cylinder 62 being fixed on bottom plate 61, the air inlet pipe for being connected to 62 output end of the first assistant cylinder 63 and second assistant cylinder 64；First assistant cylinder 62 is suitable for driving air inlet pipe 63 and is in contact with the inlet end of check valve 521, Second assistant cylinder 64 is suitable for driving deflation thimble 522.

Specifically, to improve the degree of automation, facilitate and be filled with compressed air into check valve assembly 52, and then improve polishing Efficiency, the opening-closing clamp is configured with air charging system 60 in this example, and compressed air, the first assistant cylinder 62 are passed through from air inlet pipe 63 For driving air inlet pipe 63, realize that the automatic butt of compressed air and check valve 521, the second assistant cylinder 64 are deflated for driving Thimble 522 realizes the opening of fixture.Certainly, bottom plate 61 preferably can mount on board, realizes and fixes.

For the speed for improving when opening-closing clamp is opened, which further includes back-off assembly 40, the back-off assembly 40 Including the first guide pad 41, the second guide pad 42 and the second elasticity being configured between the first guide pad 41 and the second guide pad 42 Part, the first guide pad 41 are connect with the periphery wall of fixed part 10, and the second guide pad 42 is connect with the periphery wall of movable part 20, and second Elastic component offer makes movable part 20 far from the elastic force of fixed part 10, and the movement of such second guide pad 42 can drive movable part 20 It is mobile.In this way, when the piston rod for opening and closing cylinder 51 pushes movable part 20 to be moved towards fixed part 10, the second guide pad 42 is driven Follow movable part 20 to move and compress the second elastic component, when deflation thimble 522 by it is open-top after, movable part 20 is in the second elastic component Under resilient force, movable part 20 can be flicked, realizes the opening of opening-closing clamp.

Preferably, as shown in figure 4, the second assistant cylinder 64 is fixed in the output end of the first assistant cylinder 62, the second auxiliary The output end of cylinder 64 is opposite with deflation thimble 522, air inlet pipe 63 by the hollow piston rod of the second assistant cylinder 64 with it is unidirectional Valve 521 communicates.

To improve the globality of device, the first assistant cylinder 62 is connected together with the second assistant cylinder 64, and will The piston rod of second assistant cylinder 64 is set as hollow stem, can be used as the pipeline of conveying compressed air, improves whole dress in this way The integrated level set, but also appearance is more beautiful.

As preferred embodiment, the movement of the second assistant cylinder 64 is driven to improve 62 piston rod of the first assistant cylinder Flexibility so that air inlet pipe 63 is smoothed out check valve 521 by the second assistant cylinder 64 conveying of compressed air, inflation dress To set 60 further include at least guiding axis 611 being connected on bottom plate 61, the linear bearing 613 for being sheathed on guiding axis 611, affixed In the connecting plate 612 of linear bearing 613, linear bearing 613 is slidably matched with guiding axis 611, the output of the first assistant cylinder 62 End is connected by connecting plate 612 with the second assistant cylinder 64.Preferably, two guiding axis are configured in the present embodiment bottom plate 61 611, further increase smoothness when 62 piston rod of the first assistant cylinder is drivingly connected plate 612.

Preferably, it is the sealing performance for improving when being passed through compressed air, the second assistant cylinder 64 is towards deflation thimble 522 One end be connected with sealing ring fixed plate 641, sealing ring fixed plate 641 is offered on one side towards deflation thimble 522 suitable for peace Fill the groove of sealing ring 642；The inlet end of check valve 521, which is configured with, to be suitable for and 641 matched check valve of sealing ring fixed plate Sealing plate 523, unidirectional valve seal plate 523 are bolted in the inlet end of check valve 521.In this way it can be ensured that by check valve 521 to opening It closes in cylinder 51 and is filled with enough compressed airs, to provide power for movable part 20, realize the closure of opening-closing clamp.

Preferably, pedestal 30 is ring-like in closing, and is sheathed on the periphery wall of fixed part 10 and movable part 20, pedestal 30 is right against The output end for opening and closing cylinder 51 is equipped with trepanning 31, and the folding cylinder 51 is installed on the movable part 20 faced with fixed seat 10 On, to improve smooth degree when folding 51 piston rod of cylinder is released, it is ensured that the closing performance of opening-closing clamp.In addition, on pedestal 30 One end opposite with cohesion device 50 is configured with counterweight 32, to keep opening-closing clamp Horizon when polishing process high speed rotates Weighing apparatus property, avoids generating gap because of unbalance stress or centrifugal force, influences quality of finish.

Preferably, the structure of counterweight 32 is identical as 50 structure of cohesion device in above-described embodiment, in this way, both can be real The effect of existing counterweight, and can be when cohesion device 50 reaches service life or failure, it is possible to provide the quick-replaceable work in scene With effectively increasing production efficiency.

Preferably, the first elastic component is configured to the first spring 5221, and the second elastic component is configured to second spring 43.

Preferably, fixed part 10 is in semicircular arc, and movable part 20 is in semicircular arc corresponding with the fixed part 10, The contact area with the outer wall of polished object can be increased, further to hold polished object tightly, to improve quality of finish.

As preferred embodiment, for the flexibility for further increasing when opening-closing clamp folding, fixed part 10 with The joint of movable part 20 is respectively configured at least one cohesion device 50, can keep 20 both ends stress balance of movable part, avoid There is Caton phenomenon when opening and closing in movable part 20, and influences to produce.Preferably, in the engagement of fixed part 10 and movable part 20 in this example Locating each configuration, there are two cohesion devices 50, and are distributed in the both sides of pedestal 30 respectively, the stability higher of such opening-closing clamp. Certainly, in other embodiments, cohesion device 50 can also be arranged three it is even more.

The concrete operating principle of the utility model is as follows：After polished object is placed into opening-closing clamp, the first auxiliary gas 62 action drives connecting plate 612 of cylinder moves upwards, and drives the second assistant cylinder 64 being mounted on the connecting plate 612 is whole to move It is dynamic so that sealing ring fixed plate 641 is connected to each other with unidirectional valve seal plate 523 and is bonded, at this point, being passed through from air inlet pipe 63 enough Compressed air enters check valve assembly 52, and the piston rod for subsequently entering inside folding cylinder 51, and then opening and closing cylinder 51, which stretches out, to be driven The movable part 20 of dynamic opening-closing clamp is moved to fixed part 10, and when compressed air input finishes, the first assistant cylinder 62 drives second Assistant cylinder 64 is whole to be moved down reset and disconnects the input of compressed air, is opened and closed the compressed air inside cylinder 51 at this time and is also locked It lives calmly, and lasting thrust is provided movable part 20 so that opening-closing clamp holds polished object tightly completely.After polishing, the Two assistant cylinders 64 act, and hollow piston rod stretches out, and deflation thimble 522 is pushed to make the gas leak in folding cylinder 51, into And under the effect of the compression elasticity of the first spring 5221, the movement of the second guide pad 42 is pushed, and drive movable part 20 to far from solid The direction movement for determining portion 10, to make opening-closing clamp open.

A kind of opening-closing clamp that the utility model embodiment provides by using fixed part, movable part, back-off assembly and is embraced The setting of tight device can avoid gap and realize stable folding, can also realize the side bonding wire of polishing article, while reducing dust pair The influence of fixture improves the quality of finish of polished object.

The above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacing belongs to In the utility model range claimed.

Claims (10)

1. a kind of opening-closing clamp, which is characterized in that including：

Fixed part has recess；

Movable part is oppositely arranged with the fixed part, and docking forms the space for accommodating polished object；

Pedestal is fixed in the fixed part；

Cohesion device, including folding cylinder and check valve assembly, the folding cylinder are fixed in the pedestal, the folding cylinder For driving the movable part to be moved to the fixed part；

The check valve assembly is installed on the inlet end of the folding cylinder, and the check valve assembly includes check valve and is sheathed on Deflation thimble in the check valve, the outlet side of the check valve is connected with the inlet end of the folding cylinder, described unidirectional The first elastic component is configured between valve and the deflation thimble, the first elastic component offer makes the deflation thimble far from described The elastic force of check valve.

2. a kind of opening-closing clamp as described in claim 1, which is characterized in that further include air charging system, the air charging system packet Include bottom plate, the first assistant cylinder for being fixed on the bottom plate, the air inlet pipe for being connected to the first assistant cylinder output end and Second assistant cylinder；First assistant cylinder is suitable for that the air inlet pipe is driven to be in contact with the inlet end of the check valve, institute The second assistant cylinder is stated to be suitable for driving the deflation thimble.

3. a kind of opening-closing clamp as described in claim 1, which is characterized in that further include back-off assembly, the back-off assembly packet Include the first guide pad, the second guide pad and the second elasticity being configured between first guide pad and second guide pad Part, first guide pad are connect with the periphery wall of the fixed part, the periphery wall of second guide pad and the movable part Connection, the second elastic component offer make the movable part far from the elastic force of the fixed part.

4. a kind of opening-closing clamp as claimed in claim 2, which is characterized in that second assistant cylinder is fixed in described first The output end of assistant cylinder, the output end of second assistant cylinder is opposite with the deflation thimble, and the air inlet pipe passes through institute The hollow piston rod for stating the second assistant cylinder is communicated with the check valve.

5. a kind of opening-closing clamp as claimed in claim 2, which is characterized in that the air charging system further includes being connected to the bottom An at least guiding axis on plate, the linear bearing for being sheathed on the guiding axis, the connecting plate for being fixed in the linear bearing, institute It states linear bearing to be slidably matched with the guiding axis, the output end of first assistant cylinder passes through the connecting plate and described the Two assistant cylinders are connected.

6. a kind of opening-closing clamp as claimed in claim 4, which is characterized in that second assistant cylinder is pushed up towards the deflation One end of needle is connected with sealing ring fixed plate, and the sealing ring fixed plate is offered on one side towards the deflation thimble suitable for peace Fill the groove of sealing ring；

The inlet end of the check valve, which is configured with, to be suitable for and the matched unidirectional valve seal plate of the sealing ring fixed plate, the list The inlet end of the check valve is bolted in valve seal plate.

7. a kind of opening-closing clamp as described in any one of claim 1-6, which is characterized in that the pedestal is ring-like in closing, It is sheathed on the periphery wall of the fixed part and the movable part, the output end that the pedestal is right against the folding cylinder is equipped with and opens Hole；

Pedestal one end opposite with the cohesion device is configured with counterweight.

8. a kind of opening-closing clamp as claimed in claim 7, which is characterized in that the structure of the counterweight and the cohesion device Identical, first elastic component is configured to the first spring, and the second elastic component is configured to second spring.

9. a kind of opening-closing clamp as described in any one of claim 1-6, which is characterized in that the fixed part is in semi arch Shape, the movable part are in semicircular arc corresponding with the fixed part.

10. a kind of opening-closing clamp as described in any one of claim 1-6, which is characterized in that the fixed part and the work The joint in dynamic portion is respectively configured at least one cohesion device.