CN216736436U - Clamping device - Google Patents

Abstract

The utility model provides a clamping device which comprises a base, a left clamping arm, a right clamping arm, a push plate and a linear driver, wherein the left clamping arm and the right clamping arm are movably connected with the base, the left clamping arm is provided with a left clamping arm push rod and a left clamping jaw, the right clamping arm is provided with a right clamping arm push rod and a right clamping jaw, the linear driver is fixedly connected to the base, the driving end of the linear driver is connected with the push plate, the push plate is provided with a push plate driving sliding groove, the push plate driving sliding groove of the push plate is sleeved on the left clamping arm push rod and the right clamping arm push rod, and the linear driver can drive the push plate to reciprocate so that the push plate drives the left clamping jaw and the right clamping jaw to approach to or move away from each other. The utility model has the beneficial effects that: the clamping device does not need to be driven by the air cylinder, the whole machine volume of the device can be effectively reduced, the sample frame can be clamped more stably by clamping the left clamping jaw and the right clamping jaw, the sample frame is prevented from being influenced by vibration generated during operation of the device, the stability of operation of the device is guaranteed, and the operation precision of transferring the sample frame is improved.

Description

Clamping device

Technical Field

The utility model relates to the technical field of medical detection instruments, in particular to a clamping device.

Background

In the medical equipment field, especially apply to automatic check out test set, like full-automatic blood coagulation analysis appearance, full-automatic chemiluminescence analysis and full-automatic blood cell analysis appearance etc. need a structure to drive the sample frame motion that bears the weight of sample pipe, however among the prior art, press from both sides the unable effective fixed sample frame of device of getting the sample frame, lead to the sample frame can follow the vibration of instrument and rock, when pressing from both sides the device of getting the sample frame and stop suddenly, the sample frame can be because of inertia forward overshoot, influence the motion precision.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: aiming at one or more defects in the prior art, the clamping device which is reasonable in structure and good in clamping stability is provided.

In order to solve the technical problems, the utility model adopts the technical scheme that: a clamping device comprises a base, a left clamping arm, a right clamping arm, a push plate and a linear driver, wherein the left clamping arm and the right clamping arm are both movably connected with the base, the left clamping arm and the right clamping arm are oppositely arranged, the left clamping arm is provided with a left clamping arm push rod and a left clamping jaw, the right clamping arm is provided with a right clamping arm push rod and a right clamping jaw, the left clamping jaw is arranged at the end part of the left clamping arm close to the right clamping arm, the right clamping jaw is arranged at the end part of the left clamping arm close to the left clamping arm, the linear driver is fixedly connected with the base, the driving end of the linear driver is connected with the push plate, the push plate is provided with a push plate driving sliding groove, the push plate driving sliding groove of the push plate is sleeved on the left clamping arm push rod and the right clamping arm push rod, and the linear driver can drive the push plate to reciprocate, so that the left clamping jaw and the right clamping jaw are driven by the push plate to be close to or far away from each other.

Furthermore, the left clamping arm and the right clamping arm are respectively connected with the base in a rotating mode.

Furthermore, the one side that left side clamping jaw with right clamping jaw is in opposite directions is the cambered surface.

Furthermore, the pedestal is connected with a push plate slide rail, the push plate is correspondingly provided with a slide block, and the push plate can reciprocate along the push plate slide rail through the slide block.

Furthermore, the push plate comprises a force bearing end and a force application end, the push plate driving sliding groove is formed in the force application end, the driving end of the linear driver is connected with the force bearing end, and the sliding block is arranged between the force application end and the force bearing end.

Furthermore, the driving end of the linear driver is connected with the push plate through a buffer mechanism, and the buffer mechanism is used for buffering the thrust of the driving end of the linear driver to the push plate.

Furthermore, buffer gear includes bottom plate and roof, the bottom plate with the drive end of linear actuator is connected, the roof with the push pedal is connected, the bottom plate with roof swing joint, be equipped with the spring between bottom plate and the roof.

Further, the roof is equipped with the spacing post of spring, the bottom plate corresponds and is equipped with the spring spacing groove, the spring cup joint in the spacing post of spring.

Furthermore, the bottom of the spring limiting groove of the bottom plate is provided with a limiting through hole, the spring limiting column of the top plate penetrates through the limiting through hole to be connected with a limiting screw, and the limiting screw is sleeved with a limiting washer.

Further, the linear driver is a linear motor or a screw motor.

The utility model has the beneficial effects that: the clamping device does not need to be driven by the air cylinder, the whole machine volume of the device can be effectively reduced, the sample frame can be clamped more stably by clamping the left clamping jaw and the right clamping jaw, the sample frame is prevented from being influenced by vibration generated during operation of the device, the stability of operation of the device is guaranteed, and the operation precision of transferring the sample frame is improved.

Drawings

The specific structure of the utility model is detailed below with reference to the accompanying drawings:

FIG. 1 is a schematic perspective view of a clamping device according to the present invention;

FIG. 2 is a schematic front view of the clamping device of the present invention in a non-clamping state;

FIG. 3 is a schematic perspective view of the clamping device and the sample holder of the present invention in a non-clamping state;

FIG. 4 is a schematic front view of the clamping device of the present invention in a clamping state;

FIG. 5 is a schematic perspective view of the clamping device and the sample holder of the present invention in a clamping state;

FIG. 6 is a schematic view of the structure in the direction B-B in FIG. 2;

FIG. 7 is a schematic view of a portion of the cross-section of the portion A in FIG. 2 taken along the direction C-C in FIG. 6;

FIG. 8 is a schematic cross-sectional view of a buffer mechanism of the clamping device of the present invention;

FIG. 9 is an exploded view of the damping mechanism of the clamping assembly of the present invention;

1-a base; 11-a pusher slide rail;

2-a left clamping arm; 21-left clamp arm push rod; 22-a left jaw;

3-right clamping arm; 31-right arm clamp push rod; 32-right jaw;

4-pushing the plate; 41-push plate driving sliding groove; 42-a slide block;

5-a linear drive; 51-a drive end;

6-a buffer mechanism; 61-a base plate; 611-spring limit groove; 612-limiting perforation; 62-a top plate; 621-spring limit post; 63-a spring; 64-limit screws; 641-stop washer;

7-a sample rack; 71-clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Examples

Referring to fig. 1 to 9, a clamping device includes a base 1, a left clamping arm 2, a right clamping arm 3, a push plate 4 and a linear driver 5, wherein the left clamping arm 2 and the right clamping arm 3 are movably connected to the base 1, the left clamping arm 2 and the right clamping arm 3 are oppositely disposed, the left clamping arm 2 is provided with a left clamping arm push rod 21 and a left clamping jaw 22, the right clamping arm 3 is provided with a right clamping arm push rod 31 and a right clamping jaw 32, the left clamping jaw 22 is disposed at an end of the left clamping arm 2 close to the right clamping arm 3, the right clamping jaw 32 is disposed at an end of the right clamping arm 3 close to the left clamping arm 2, the linear driver 5 is fixedly connected to the base 1, a driving end 51 of the linear driver 5 is connected to the push plate 4, the push plate 4 is provided with a push plate driving chute 41, the push plate driving chute 41 of the push plate is sleeved on the left clamping arm push rod 21 and the right clamping arm 31, the linear driver 5 can drive the push plate 4 to reciprocate, so that the push plate 4 drives the left clamping jaw 21 and the right clamping jaw 31 to move close to or away from each other.

In this embodiment, left arm lock 2 and right arm lock 3 respectively with base 1 rotates and is connected.

Specifically, left arm lock 2 and right arm lock 3 rotate with base 1 respectively and are connected, make left clamping jaw 22 and right clamping jaw 32 keep away from through rotating left arm lock 2 and right arm lock 3 and realize the centre gripping action, when in order to let push pedal 4 remove, can drive left arm lock 2 and right arm lock 3 through push pedal drive spout 41 and be rotary motion, base 1's vertical direction reciprocating motion can be followed to push pedal 4, and the push pedal drive spout 41 of push pedal is "one" font, left arm lock push rod 21 of left arm lock and right arm lock's right arm lock push rod 31 all insert and establish in "one" font push pedal drive spout 41.

When the sample rack 7 needs to be clamped, the clamping device is moved to a preset position, so that the left clamping jaw 22 and the right clamping jaw 32 are aligned to the notch of the clamping groove 71 of the sample rack 7, the linear driver 5 drives the push plate 4 to move upwards, the push plate driving chute 41 applies upward thrust to the left clamping arm push rod 21 and the right clamping arm push rod 31, the left clamping arm push rod 21 drives the left clamping arm 2 to rotate anticlockwise, the right clamping arm push rod 31 drives the right clamping arm 3 to rotate clockwise, and the left clamping jaw 22 and the right clamping jaw 32 do circular arc motion in the direction close to the clamping groove 71 of the sample rack and respectively extend into the clamping groove 71 of the sample rack 7 and abut against the two side groove walls of the clamping groove 71, so that clamping action is realized;

when the sample frame is required to be released, linear driver 5 drives push plate 4 to move downwards, push plate drive chute 41 applies downward pulling force to left arm lock push rod 21 and right arm lock push rod 31, make left arm lock push rod 21 drive left arm lock 2 and do clockwise rotation, make right arm lock push rod 31 drive right arm lock 3 and do anticlockwise rotation, thereby make left clamping jaw 22 and right clamping jaw 32 do circular arc motion to the direction of keeping away from centre gripping groove 71, make left clamping jaw 22 and right clamping jaw 32 leave the both sides cell wall of centre gripping groove 71, and keep away from sample frame 7 by the notch of centre gripping groove 71, thereby realize releasing the action.

Because left arm lock 2 and right arm lock 3 realize the centre gripping action through rotatory mode, left side clamping jaw 22 with right clamping jaw 32 one side in opposite directions is the cambered surface, can avoid two arm locks to cause the interference to the rotation of other arm lock when rotatory.

Similarly, the horizontal direction reciprocating motion that base 1 all can be followed to left arm lock 2 and right arm lock 3 also can realize the centre gripping action, when in order to let push pedal 4 remove, can drive left arm lock 2 and right arm lock 3 lateral shifting through push pedal drive spout 41, base 1's vertical direction reciprocating motion can be followed to push pedal 4, and push pedal drive spout 41 of push pedal 4 is "U" shape groove, left arm lock push rod 21 of left arm lock 2 and right arm lock push rod 31 of right arm lock 3 insert respectively and establish the both sides in "U" shape groove.

When the sample rack 7 needs to be clamped, the clamping device is moved to a preset position, so that the left clamping jaw 22 and the right clamping jaw 32 extend into the clamping groove 71 of the sample rack 7, the linear driver 5 drives the push plate 4 to move upwards, two inclined edges of the push plate driving chute 41 respectively apply upward thrust to the left clamping arm push rod 21 and the right clamping arm push rod 31, so that the left clamping arm push rod 21 drives the left clamping arm 2 to move leftwards, the right clamping arm push rod 31 drives the right clamping arm 3 to move rightwards, and the left clamping jaw 22 and the right clamping jaw 32 move oppositely and respectively abut against two side groove walls of the clamping groove 71 of the sample rack 7, so that clamping action is realized;

when the sample rack 7 needs to be released, the linear driver 5 drives the push plate 4 to move downwards, two bevel edges of the push plate driving chute 41 respectively apply downward pulling force to the left clamping arm push rod 21 and the right clamping arm push rod 31, so that the left clamping arm push rod 21 drives the left clamping arm 2 to move rightwards, the right clamping arm push rod 31 drives the right clamping arm 3 to move leftwards, the left clamping jaw 22 and the right clamping jaw 32 move oppositely, the left clamping jaw 22 and the right clamping jaw 32 leave two side groove walls of the clamping groove 71 of the sample rack, and the releasing action is realized.

Furthermore, in order to ensure that the push plate 4 can stably reciprocate along one direction on the base 1, the base 1 is provided with a push plate slide rail 11, the push plate 4 is correspondingly provided with a slide block 42, the push plate 4 passes through the slide block 42 can follow the reciprocating motion of the push plate slide rail 11, and the reliability and the stability of the operation of the device are effectively improved.

Further, the push plate 4 includes a force-bearing end and a force-applying end, the push plate driving sliding groove 41 is disposed at the force-applying end, the driving end 51 of the linear driver 5 is connected with the force-bearing end, and the sliding block is disposed between the force-applying end and the force-bearing end.

The sliding block 42 is arranged between the stress end and the force application end, so that the stress of the push plate 4 is more uniform, and the operation is more stable.

Further, the driving end of the linear driver 5 is connected with the push plate 4 through a buffer mechanism 6, and the buffer mechanism 6 is used for buffering the thrust of the driving end of the linear driver 5 to the push plate 4.

The driving end of the linear driver 5 is connected with the push plate 4 through the buffer mechanism 6, so that the linear driver 5 can be protected, the driving end of the linear driver 5 is prevented from being failed due to overload, and the push plate 4 is ensured to be continuously applied with thrust.

Specifically, buffer gear 6 includes bottom plate 61 and roof 62, bottom plate 61 with the drive end of linear actuator 5 is connected, roof 62 with push pedal 4 is connected, bottom plate 61 with roof 62 passes through the spring 63 to be connected, in order to prevent that spring 63 from taking place lateral shifting and reducing the buffering effect, roof 62 is equipped with the spacing post of spring 621, bottom plate 61 corresponds and is equipped with spring spacing groove 611, spring 63 cup joints in the spacing post of spring 621. Meanwhile, in order to prevent the bottom plate 61 from being separated from the top plate 62 to cause buffer failure, a limiting through hole 612 is formed in the bottom of the spring limiting groove 611 of the bottom plate, a spring limiting post 621 of the top plate penetrates through the limiting through hole 612 to connect the limiting screw 64 with the spring limiting post 621 of the top plate, in order to guarantee a limiting effect, the limiting screw 64 is sleeved with a limiting washer 641, and the outer diameter of the limiting washer 641 is larger than the diameter of the limiting through hole 612.

When the left clamping jaw 22 and the right clamping jaw 32 abut against the two side groove walls of the clamping groove of the sample frame in the opening process, the left clamping jaw 22 and the right clamping jaw 32 cannot be continuously opened, at this time, the left clamping arm 2 and the right clamping arm 3 cannot rotate, the push plate 4 is also in a state of stopping, at this time, the driving part 51 of the linear driver 5 continuously rises, the driving part can drive the bottom plate 61 to continuously rise, the bottom plate 51 can compress the spring 63, in the process of compressing the spring 63, the elastic force of the spring 63 is continuously increased, the acting force of the spring 63 on the top plate 62 is continuously increased, the acting force on the push plate 4 is continuously increased, the acting force of the push plate 4 on the left clamping arm 2 and the right clamping arm 3 is also continuously increased, and finally, the clamping force of the left clamping jaw 22 and the right clamping jaw 32 on the two side groove walls of the clamping groove of the sample frame can be ensured;

when sample frame 7 is released to needs, the driving part 51 of linear actuator 5 descends, drives bottom plate 61 and descends, and elasticity between bottom plate 61 and the roof 62 reduces gradually, and when bottom plate 61 contacted spacing washer 641, spring 63 no longer extended, and the decline of bottom plate 61 can drive roof 62 and descend simultaneously, and then drive push plate 4 and descend, and push plate 4 drive left arm lock 2 and right arm lock 3 are rotatory, make left clamping jaw 22 and right clamping jaw 32 shrink, finally break away from sample frame.

The buffer gear is arranged to prevent the sample frame from shaking due to vibration generated during operation of the device, and the stability of the sample frame in code scanning and sampling actions of the instrument is guaranteed. Since the left clamping jaw 22 and the right clamping jaw 32 are in close contact with the two side groove walls of the clamping groove 71 of the sample rack 7, the two clamping jaws do not shake, and therefore, the operation precision of the clamping device is ensured.

Further, the linear driver 5 is a linear motor or a screw motor.

The linear motor or the screw rod motor can ensure that enough driving force is provided to drive the push plate 4 to drive the left clamping arm 2 and the right clamping arm 3 to move under the condition of smaller volume, and the overall volume of the clamping device is effectively reduced. Meanwhile, the linear motor or the screw rod motor can provide higher operation precision and operation stability, so that the overall stability and operation precision of the clamping device are guaranteed.

From the above description, the beneficial effects of the present invention are: the clamping device does not need to be driven by the air cylinder, the whole machine volume of the device can be effectively reduced, the sample frame can be clamped more stably by clamping the left clamping jaw and the right clamping jaw, the sample frame is prevented from being influenced by vibration generated during operation of the device, the stability of operation of the device is guaranteed, and the operation precision of transferring the sample frame is improved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A clamping device, characterized by: including base, left arm lock, right arm lock, push pedal and sharp driver, left side arm lock and right arm lock all with base swing joint, left side arm lock and right arm lock set up in opposite directions, left side arm lock is equipped with left arm lock push rod and left clamping jaw, right side arm lock is equipped with right arm lock push rod and right clamping jaw, left side clamping jaw set up in left side arm lock is close to the tip of right side arm lock, right side clamping jaw set up in left side arm lock is close to the tip of left side arm lock, sharp driver rigid coupling in the base, the drive end of sharp driver with the push pedal is connected, the push pedal is equipped with push pedal drive spout, the push pedal drive spout of push pedal cup joints in left arm lock push rod and right arm lock push rod, sharp driver can drive push pedal reciprocating motion makes left clamping jaw of push pedal drive and right clamping jaw be close to each other or keep away from.

2. The clamping device of claim 1, wherein: the left clamping arm and the right clamping arm are respectively connected with the base in a rotating mode.

3. The clamping device of claim 2, wherein: the left clamping jaw and the right clamping jaw are cambered surfaces in opposite directions.

4. The clamping device of claim 1, wherein: the base is connected with a push plate slide rail, the push plate is correspondingly provided with a slide block, and the push plate can reciprocate along the push plate slide rail through the slide block.

5. The clamping device of claim 4, wherein: the push plate comprises a force bearing end and a force application end, the push plate driving sliding groove is formed in the force application end, the driving end of the linear driver is connected with the force bearing end, and the sliding block is arranged between the force application end and the force bearing end.

6. The clamping device of claim 1, wherein: the driving end of the linear driver is connected with the push plate through a buffer mechanism, and the buffer mechanism is used for buffering the thrust of the driving end of the linear driver to the push plate.

7. The clamping device of claim 6, wherein: the buffer mechanism comprises a bottom plate and a top plate, the bottom plate is connected with the driving end of the linear driver, the top plate is connected with the push plate, the bottom plate is movably connected with the top plate, and a spring is arranged between the bottom plate and the top plate.

8. The clamping device of claim 7, wherein: the top plate is provided with a spring limiting post, the bottom plate is correspondingly provided with a spring limiting groove, and the spring is sleeved on the spring limiting post.

9. The clamping device of claim 8, wherein: the tank bottom of the spring spacing groove of bottom plate is equipped with spacing perforation, the spacing post of spring of roof passes spacing perforation is connected with limit screw, limit screw has cup jointed spacing packing ring.

10. The clamping device of claim 1, wherein: the linear driver is a linear motor or a screw rod motor.

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