Clamping device
Through the rotating electromagnetic drive mechanism and return mechanism, the clamping device is optimized, and the problems of large noise vibration, slow speed and large volume are solved, achieving low noise, efficient clamping and simplified installation effects.
Patent Information
- Application Number
- CN202421837398.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing clamping devices have high noise and vibration during operation, slow operation speed and large volume, which affect the operator's working environment and efficiency.
The rotating electromagnetic driving mechanism is used to drive the rotating cam, so that the first clamping arm and the second clamping arm are rotated in a direction away from each other, thereby realizing the clamping of the reaction cup, and combining the return mechanism and the detection unit to ensure the accuracy and efficiency of the clamping.
It reduces operating noise and vibration, improves operating speed, reduces production costs, and simplifies the structure and installation convenience of the device.
Smart Images
Figure CN223149668U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of medical devices, and particularly to a clamping device. Background Art
[0002] In automated medical devices such as electrochemiluminescence immunoassay analyzers, it is necessary to place samples and reagents in reaction cups for reaction to obtain samples to be tested, and then use a clamping device in the automated medical device to grab the reaction cups for subsequent detection operations.
[0003] However, the current clamping device has high noise and vibration during operation, which is not conducive to providing a good working environment for operators; it has a slow operating speed, which is not conducive to high-efficiency operations; and the device has a large volume, which is not conducive to installation and placement. Summary of the Utility Model
[0004] Based on this, it is necessary to provide a clamping device in view of the problems of high operating noise, large operating vibration, slow operating speed and large volume of the current clamping device.
[0005] A clamping device, the clamping device includes a rotary electromagnetic drive mechanism, a rotary cam, a first clamping arm, a second clamping arm and a fixed shaft, wherein:
[0006] The fixed shaft is arranged on the rotary electromagnetic drive mechanism;
[0007] The first clamping arm and the second clamping arm are rotatably mounted on the fixed shaft around the fixed shaft, and the first clamping arm and the second clamping arm are arranged oppositely;
[0008] The rotary cam is connected to the output end of the rotary electromagnetic drive mechanism and is located between the first clamping arm and the second clamping arm;
[0009] The output end of the rotary electromagnetic drive mechanism is used to drive the rotary cam to rotate when powered on, so that the first clamping arm and the second clamping arm rotate in a direction away from each other.
[0010] In the above clamping device, by setting the output end of the rotary electromagnetic drive mechanism to drive the rotary cam to rotate when powered on, driving the first clamping arm and the second clamping arm to rotate in a direction away from each other, that is, the first clamping arm and the second clamping arm open to clamp the reaction cup, realizing the clamping of the reaction cup. This application uses a rotary electromagnetic drive mechanism for driving, reducing operating noise and operating vibration; and the rotary electromagnetic drive mechanism responds in a timely manner and can quickly drive the rotary cam to rotate to open the first clamping arm and the second clamping arm, improving the operation speed; and the component structure of the above clamping device is simple, which is conducive to installation and placement and reduces production costs.
[0011] In one embodiment, the clamping device further includes a return mechanism, which includes a first return elastic member, two ends of the first return elastic member are respectively arranged on the first clamping arm and the second clamping arm, and the first return elastic member is in a stretched state.
[0012] In one embodiment, the first clamping arm comprises a first opening and closing plate, a first rotating connection member and a first opening and closing clamping jaw connected in sequence, and the second clamping arm comprises a second opening and closing plate, a second rotating connection member and a second opening and closing clamping jaw connected in sequence, wherein:
[0013] The first rotating connecting member and the second rotating connecting member can be rotatably mounted on the fixed shaft;
[0014] The first opening and closing plate and the second opening and closing plate are arranged opposite to each other, and an accommodation space for accommodating the rotating cam is formed therebetween;
[0015] The first opening and closing clamping jaw and the second opening and closing clamping jaw are used to clamp and release the reaction cup.
[0016] In one embodiment, the first rotating connection member includes a first rotating cylinder and a first fixed plate connected to the first rotating cylinder, the first rotating cylinder is rotatably mounted on the fixed shaft, and the first fixed plate is connected to the first opening and closing plate and the first opening and closing clamping claw.
[0017] In one embodiment, the first clamping arm further includes a first rotating bearing, an inner ring of the first rotating bearing is sleeved on the fixed shaft, and the first rotating cylinder is sleeved on the outer ring of the first rotating bearing.
[0018] In one embodiment, the return mechanism also includes a limiting member, which includes a limiting cylinder and a limiting protrusion arranged on the limiting cylinder, and the end of the limiting cylinder facing away from the limiting protrusion is arranged at the fixed end of the rotating electromagnetic drive mechanism, and a limiting groove for accommodating the limiting protrusion is opened on the first rotating cylinder.
[0019] In one embodiment, the return mechanism also includes a deformation baffle and a second return elastic member, the deformation baffle is arranged at the fixed end of the rotating electromagnetic drive mechanism, the two ends of the second return elastic member are respectively arranged at the deformation baffle and the first clamping arm, and the second return elastic member is in a compressed state.
[0020] In one embodiment, the return mechanism further includes a return fixing post, the return fixing post is arranged at the fixed end of the rotary electromagnetic driving mechanism, the second return elastic member is a torsion spring, the torsion spring includes an elastic body and two elastic rods connected to both sides of the elastic body, the elastic body is sleeved on the return fixing post, and the two elastic rods are respectively arranged on the deformation baffle and the first clamping arm.
[0021] In one embodiment, a receiving platform is arranged at the end of the first opening and closing jaw and / or the second opening and closing jaw, and the receiving platform is used for receiving the rim of the reaction cup.
[0022] In one embodiment, the first opening and closing plate and / or the second opening and closing plate are made of polyetheretherketone material. Description of the Drawings
[0023] Figure 1 It is a schematic structural diagram of the clamping device provided by the present application.
[0024] Figure 2 is Figure 1 an exploded schematic diagram of a part of the clamping device in
[0025] Figure 3 is Figure 1 the left view of the clamping device in
[0026] Figure 4 is Figure 1 a schematic structural diagram of the clamping device from another angle in
[0027] Figure 5 It is a cross-sectional view of the clamping device provided by the present application.
[0028] Figure 6 is Figure 2 an enlarged schematic diagram of the structure at A in
[0029] Wherein:
[0030] 10. Clamping device; 20. Reaction cup; 21. Rim;
[0031] 100. Rotary electromagnetic driving mechanism; 110. Electromagnetic mounting seat; 120. Rotary electromagnet;
[0032] 200. Rotary cam;
[0033] 300. First clamping arm; 310. First opening and closing plate; 320. First rotating connecting piece; 321. First rotating cylinder; 3211. Limit groove; 322. First fixing plate; 330. First opening and closing jaw; 340. First rotating bearing;
[0034] 400, second clamping arm; 410, second opening and closing plate; 420, second rotating connecting member; 421, second rotating cylinder; 422, second fixing plate; 430, second opening and closing clamping claw; 431, receiving platform; 440, accommodating space; 450, second rotating bearing;
[0035] 500, fixed axis;
[0036] 600, return mechanism; 610, first return elastic member; 620, limit member; 621, limit cylinder; 622, limit convex block; 630, deformation baffle; 640, second return elastic member; 650, return fixing column;
[0037] 700, detection unit; 710, photoelectric sensor; 720, optical coupling baffle; 730, fixing seat. DETAILED DESCRIPTION
[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0039] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0040] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0041] In this application, unless otherwise clearly defined and limited, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0042] In this application, unless otherwise clearly defined and limited, if there is a description such as the first feature being "on" or "under" the second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal level than the second feature.
[0043] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.
[0044] Refer to Figure 1 and Figure 2 as shown Figure 1 which shows a schematic structural view of the clamping device 10 in an embodiment of this application. Figure 2 is Figure 1 a partially exploded schematic view of the structure of the clamping device 10 in. The clamping device 10 provided in an embodiment of this application is generally applied to the technical field of medical devices and is used to clamp the reaction cup 20. The clamping device 10 includes a rotary electromagnetic drive mechanism 100, a rotary cam 200, a first clamping arm 300, a second clamping arm 400 and a fixed shaft 500.
[0045] Among them, the fixed shaft 500 is arranged on the rotary electromagnetic driving mechanism 100. Specifically, the rotary electromagnetic driving mechanism 100 includes an electromagnetic mounting seat 110 and a rotary electromagnet 120 arranged on the electromagnetic mounting seat 110, and the fixed shaft 500 is specifically mounted on the electromagnetic mounting seat 110. The first clamping arm 300 and the second clamping arm 400 are rotatably mounted on the fixed shaft 500 around the fixed shaft 500, and the first clamping arm 300 and the second clamping arm 400 are arranged oppositely. The rotary cam 200 is connected to the output end of the rotary electromagnetic driving mechanism 100, and the rotary cam 200 is located between the first clamping arm 300 and the second clamping arm 400. Specifically, the rotary cam 200 is connected to the output end of the rotary electromagnet 120 passing through the electromagnetic mounting seat 110.
[0046] The output end of the rotary electromagnetic driving mechanism 100 is used to drive the rotary cam 200 to rotate when powered on. Specifically, the rotary electromagnet 120 in the rotary electromagnetic driving mechanism 100 deflects when powered on, and the deflection of the rotary electromagnet 120 causes the rotary cam 200 to rotate. The rotary cam 200 causes the first clamping arm 300 and the second clamping arm 400 to rotate in a direction away from each other, that is, the first clamping arm 300 and the second clamping arm 400 open to clamp the reaction cup 20. It should be noted that in this application, it is preferably that the rotary electromagnet 120 deflects 45° when powered on, so that the opening size of the first clamping arm 300 and the second clamping arm 400 adapts to the size of the reaction cup 20. The deflection angle of the rotary electromagnet 120 can be adjusted according to the sizes of different reaction cups 20, and is not limited to the above 45°. It should be emphasized that the rotary electromagnet 120 is a mature technology and will not be elaborated here too much.
[0047] For the above-mentioned clamping device 10, by setting the output end of the rotary electromagnetic driving mechanism 100 to drive the rotary cam 200 to rotate when powered on, driving the first clamping arm 300 and the second clamping arm 400 to rotate in a direction away from each other, that is, the first clamping arm 300 and the second clamping arm 400 open to clamp the reaction cup 20, the clamping of the reaction cup 20 is realized. This application uses the rotary electromagnetic driving mechanism 100 for driving. Compared with using a motor or a cylinder as the driving part, it reduces the running noise and running vibration; and the rotary electromagnetic driving mechanism 100 responds in a timely manner and can quickly drive the rotary cam 200 to rotate to open the first clamping arm 300 and the second clamping arm 400, improving the operation speed; and the component structure of the above-mentioned clamping device 10 is simple, which is conducive to installation and placement and reduces the production cost.
[0048] For the convenience of clamping reaction cups 20 of different sizes and facilitating the timely return of the first clamping arm 300 and the second clamping arm 400 after operation, in a preferred embodiment, the clamping device 10 further includes a return mechanism 600. The return mechanism 600 includes a first return elastic member 610. Two ends of the first return elastic member 610 are respectively connected to the first clamping arm 300 and the second clamping arm 400, and the first return elastic member 610 is in a stretched state. When specifically arranged, the first return elastic member 610 can be a spring, and two ends of the spring can be detachably mounted to the bottom ends of the first clamping arm 300 and the second clamping arm 400 through fasteners such as screws, studs, and bolts.
[0049] Through the above arrangement, the deflection angle of the rotary electromagnet 120 is set so that the rotary cam 200 rotates to open the distance between the first clamping arm 300 and the second clamping arm 400 to be greater than the size of the reaction cup 20, and the reaction cup 20 is located between the first clamping arm 300 and the second clamping arm 400. At this time, the power is cut off. The more stretched first return elastic member 610 has a greater restoring force, and the restoring force of the first return elastic member 610 causes the first clamping arm 300 and the second clamping arm 400 to approach each other to clamp the reaction cup 20. And when the clamping device 10 drives the reaction cup 20 to a suitable location by an external transfer device and then is powered on, the first clamping arm 300 and the second clamping arm 400 are opened by the rotation of the rotary cam 200, and the first clamping arm 300 and the second clamping arm 400 release the reaction cup 20. Subsequently, the power is cut off, and the first clamping arm 300 and the second clamping arm 400 return to the initial position under the action of the first return elastic member 610.
[0050] To more conveniently design the first clamping arm 300 and the second clamping arm 400, specifically, the first clamping arm 300 includes a first opening and closing plate 310, a first rotating connecting member 320, and a first opening and closing jaw 330 that are sequentially connected. When specifically arranged, the connection between the above three can be a detachable connection through fasteners such as screws, studs, and bolts. The second clamping arm 400 includes a second opening and closing plate 410, a second rotating connecting member 420, and a second opening and closing jaw 430 that are sequentially connected. When specifically arranged, the connection between the above three can also be a detachable connection through fasteners such as screws, studs, and bolts.
[0051] The first rotating connecting member 320 and the second rotating connecting member 420 are both rotatably mounted on the fixed shaft 500; the first opening and closing plate 310 and the second opening and closing plate 410 are arranged opposite to each other, and a receiving space 440 for receiving the rotating cam 200 is formed between the first opening and closing plate 310 and the second opening and closing plate 410; the first opening and closing jaw 330 and the second opening and closing jaw 430 are used for clamping and releasing the reaction cup 20. Through the above arrangement, the rotation of the rotating cam 200 causes the rotating cam 200 to abut against and apply a force to the first opening and closing plate 310 and the second opening and closing plate 410. The first opening and closing plate 310 and the second opening and closing plate 410 drive the respective connected first rotating connecting member 320 and second rotating connecting member 420 to move along the fixed shaft 500, so that the first opening and closing jaw 330 and the second opening and closing jaw 430 are opened to clamp or release the reaction cup 20.
[0052] Combined Figure 3 , Figure 4 and Figure 5 shown, Figure 3 is Figure 1 the left view of the clamping device 10 in Figure 4 is Figure 1 the structural schematic diagram of another angle of the clamping device 10 in Figure 5 is the cross-sectional view of the clamping device 10 in an embodiment of the present application. In some embodiments, in order to more conveniently design the first rotating connecting member 320 and the second rotating connecting member 420, more specifically, the first rotating connecting member 320 includes a first rotating cylinder 321 and a first fixing plate 322 connected to the first rotating cylinder 321. The first rotating cylinder 321 is rotatably mounted on the fixed shaft 500, and the first fixing plate 322 is connected to the first opening and closing plate 310 and the first opening and closing jaw 330. The second rotating connecting member 420 includes a second rotating cylinder 421 and a second fixing plate 422 connected to the second rotating cylinder 421. The second rotating cylinder 421 is rotatably mounted on the fixed shaft 500, and the second fixing plate 422 is connected to the second opening and closing plate 410 and the second opening and closing jaw 430. During specific installation, the first rotating cylinder 321 and the second rotating cylinder 421 are mounted on the fixed shaft 500 in a stacked manner, the first rotating cylinder 321 is located above the second rotating cylinder 421, and the first fixing plate 322 and the second fixing plate 422 are arranged opposite to each other in the horizontal direction.
[0053] In order to more conveniently realize the rotatable installation of the first rotating cylinder 321 on the fixed shaft 500, further, the first clamping arm 300 further includes a first rotating bearing 340. The inner ring of the first rotating bearing 340 is sleeved on the fixed shaft 500, and the first rotating cylinder 321 is sleeved on the outer ring of the first rotating bearing 340. Through the above arrangement, when the first rotating cylinder 321 is stressed, the first rotating cylinder 321 and the outer ring of the first rotating bearing 340 rotate relative to the inner ring of the first rotating bearing 340.
[0054] In order to conveniently realize that the second rotating cylinder 421 is rotatably mounted on the fixed shaft 500, the second clamping arm 400 further includes a second rotating bearing 450, the inner ring of the second rotating bearing 450 is sleeved on the fixed shaft 500, and the second rotating cylinder 421 is sleeved on the outer ring of the second rotating bearing 450. Through the above arrangement, when the second rotating cylinder 421 is subjected to force, the outer rings of the second rotating cylinder 421 and the second rotating bearing 450 rotate relative to the inner ring of the second rotating bearing 450.
[0055] Recombination Figure 3 As shown, in order to ensure the opening angle and return accuracy of the first clamping arm 300, the return mechanism 600 further includes a limiter 620, which includes a limiter cylinder 621 and a limiter protrusion 622 arranged on the limiter cylinder 621. The end of the limiter cylinder 621 away from the limiter protrusion 622 is arranged at the fixed end of the rotating electromagnetic drive mechanism 100. In the specific setting, the limiter cylinder 621 is arranged on the electromagnetic mounting seat 110 and sleeved on the fixed shaft 500. A limiter groove 3211 for accommodating the limiter protrusion 622 is provided on the first rotating cylinder 321. It should be understood that when the groove wall of the limiter groove 3211 rotates to abut against the side wall of the limiter protrusion 622, the limiter protrusion 622 limits the reciprocating rotation angle of the first rotating cylinder 321, thereby ensuring the opening angle and return accuracy of the first clamping arm 300.
[0056] Recombination Figure 1 As shown, in order to strengthen the clamping force on the reaction cup 20 and accelerate the return speed of the first clamping arm 300, specifically, the return mechanism 600 also includes a deformation baffle 630 and a second return elastic member 640. The deformation baffle 630 is arranged at the fixed end of the rotating electromagnetic drive mechanism 100, that is, the electromagnetic mounting seat 110. The two ends of the second return elastic member 640 are respectively arranged on the deformation baffle 630 and the first clamping arm 300, and the second return elastic member 640 is in a compressed state. In the specific configuration, the second return elastic member 640 can be a spring or a torsion spring. Through the above configuration, when the first clamping arm 300 and the second clamping arm 400 are opened under the rotation of the rotating cam 200, the second return elastic member 640 is further compressed; after the first clamping arm 300 and the second clamping arm 400 clamp or release the reaction cup 20, the power is turned off, and the rebound force of the second return elastic member 640 drives the first clamping arm 300 to approach or return to the second clamping arm 400 more quickly. It should be noted that the clamping device 10 of the present application clamps the reaction cup 20 through the rebound force of the first return elastic member 610 and the second return elastic member 640, which can avoid deformation of the reaction cup 20 during the process of clamping the reaction cup 20, so that the reaction cup 20 can be made of a relatively soft material.
[0057] Preferably, the second return elastic member 640 is a torsion spring. To better fix the torsion spring, more specifically, the return mechanism 600 further includes a return fixing post 650. The return fixing post 650 is disposed at the fixed end of the rotary electromagnetic driving mechanism 100. The torsion spring includes an elastic body and two elastic rods connected to both sides of the elastic body. The elastic body is sleeved on the return fixing post 650, and the two elastic rods are respectively disposed on the deformation baffle 630 and the first clamping arm 300. To prevent the elastic body from falling off the return fixing post 650, the return fixing post 650 includes a first shaft body, a second shaft body, and a third shaft body connected in sequence. The first shaft body is fixed to the electromagnetic mounting base 110. The elastic body is sleeved on the second shaft body. The sizes of the third shaft body and the first shaft body are both larger than the size of the hollow hole of the elastic body, so as to prevent the elastic body from detaching from the second shaft body and separating from the return fixing post 650.
[0058] Combined with Figure 6 shown in Figure 6 is Figure 2 the enlarged schematic view of the structure at A in the figure. In some embodiments, to prevent the reaction cup 20 from falling off after being clamped, further, a receiving platform 431 is provided at the end of the first opening and closing jaw 330, and / or the second opening and closing jaw 430. The receiving platform 431 is used to receive the rim 21 of the reaction cup 20. Through the above settings, the reaction cup 20 can be effectively prevented from detaching from the first opening and closing jaw 330 and / or the second opening and closing jaw 430.
[0059] To prevent the abrasion debris generated after the rotary cam 200 rubs against the first opening and closing plate 310 and / or the second opening and closing plate 410 during rotation from falling into the reaction cup 20, further, the first opening and closing plate 310 and / or the second opening and closing plate 410 are made of polyether ether ketone (PEEK) material. It should be noted that the rotary cam 200 is generally made of stainless steel. When the first opening and closing plate 310 and / or the second opening and closing plate 410 are selected to be of the same type of stainless steel material, it is easy for abrasion debris to fall into the reaction cup 20. In this application, the first opening and closing plate 310 and / or the second opening and closing plate 410 are made of PEEK plastic with high wear resistance and lubricity, which can reduce the generation of abrasion debris. At the same time, the first opening and closing plate 310 and the second opening and closing plate 410 are detachably fixed to the corresponding first fixing plate 322 and second fixing plate 422, which is convenient for timely replacing the first opening and closing plate 310 and the second opening and closing plate 410 as needed.
[0060] Combined with again Figure 3As shown in the figure, in order to timely obtain whether the first clamping arm 300 and the second clamping arm 400 have grasped the reaction cup 20, the clamping device 10 further includes a detection unit 700 and a control unit communicatively connected to the detection unit 700. The detection unit 700 includes a photoelectric sensor 710 and an optocoupler shutter 720. The photoelectric sensor 710 is disposed on the electromagnetic mounting seat 110 through a fixing seat 730 and transmits a signal to the control unit, and the optocoupler shutter 720 is connected to the second clamping arm 400. In the initial state, the optocoupler shutter 720 is disposed opposite to the photoelectric sensor 710, and the optocoupler shutter 720 is used to block the photoelectric sensor 710 from transmitting a signal to the control unit.
[0061] When the rotary electromagnet 120 is energized to drive the rotary cam 200 to rotate to open the first clamping arm 300 and the second clamping arm 400, the optocoupler shutter 720 moves with the second clamping arm 400 and thus leaves the photoelectric sensor 710. The control unit receives the signal, and at this time, the control unit can determine that the first clamping arm 300 and the second clamping arm 400 are opened. Then, the rotary electromagnet 120 is powered off, and the first clamping arm 300 and the second clamping arm 400 approach each other under the action of the first return elastic member 610 and the second return elastic member 640 to clamp the reaction cup 20 located therebetween. At this time, the optocoupler shutter 720 is still in the state of leaving the photoelectric sensor 710, and the control unit still receives the signal and determines that the reaction cup 20 is successfully clamped; if the reaction cup 20 is not clamped, when powered off, the optocoupler shutter 720 follows the second clamping arm 400 and returns to the photoelectric sensor 710 under the action of the first return elastic member 610 and the second return elastic member 640, and the control unit fails to receive the signal. Therefore, the control unit determines that the clamping fails. The control unit can be communicatively connected to a display, and the display is used to display the judgment content of the control unit.
[0062] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.
[0063] The above-described embodiments merely represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.
Claims
1. A clamping device, characterized in that The clamping device comprises a rotating electromagnetic drive mechanism, a rotating cam, a first clamping arm, a second clamping arm and a fixed shaft, wherein: The fixed shaft is arranged on the rotating electromagnetic driving mechanism; The first clamping arm and the second clamping arm are rotatably mounted on the fixed shaft around the fixed shaft, and the first clamping arm and the second clamping arm are arranged opposite to each other; The rotating cam is connected to the output end of the rotating electromagnetic driving mechanism and is located between the first clamping arm and the second clamping arm; The output end of the rotary electromagnetic driving mechanism is used to drive the rotary cam to rotate when powered on, so that the first clamping arm and the second clamping arm rotate in directions away from each other.
2. The clamping device according to claim 1, characterized in that, The clamping device further includes a return mechanism, which includes a first return elastic member, two ends of which are respectively arranged on the first clamping arm and the second clamping arm, and the first return elastic member is in a stretched state.
3. The clamping device according to claim 2, characterized in that, The first clamping arm comprises a first opening and closing plate, a first rotating connecting member and a first opening and closing clamping jaw connected in sequence, and the second clamping arm comprises a second opening and closing plate, a second rotating connecting member and a second opening and closing clamping jaw connected in sequence, wherein: The first rotating connecting member and the second rotating connecting member can be rotatably mounted on the fixed shaft; The first opening and closing plate and the second opening and closing plate are arranged opposite to each other, and an accommodation space for accommodating the rotating cam is formed therebetween; The first opening and closing clamping jaw and the second opening and closing clamping jaw are used to clamp and release the reaction cup.
4. The clamping device according to claim 3, wherein, The first rotating connection member includes a first rotating cylinder and a first fixed plate connected to the first rotating cylinder, the first rotating cylinder is rotatably mounted on the fixed shaft, and the first fixed plate is connected to the first opening and closing plate and the first opening and closing clamping claw.
5. The clamping device according to claim 4, characterized in that, The first clamping arm further comprises a first rotating bearing, the inner ring of the first rotating bearing is sleeved on the fixed shaft, and the first rotating cylinder is sleeved on the outer ring of the first rotating bearing.
6. The clamping device according to claim 4, wherein, The return mechanism also includes a limiting member, which includes a limiting cylinder and a limiting protrusion arranged on the limiting cylinder. The end of the limiting cylinder facing away from the limiting protrusion is arranged at the fixed end of the rotating electromagnetic drive mechanism, and a limiting groove for accommodating the limiting protrusion is opened on the first rotating cylinder.
7. The clamping device according to claim 2, wherein, The return mechanism also includes a deformation baffle and a second return elastic member, the deformation baffle is arranged at the fixed end of the rotary electromagnetic drive mechanism, the two ends of the second return elastic member are respectively arranged at the deformation baffle and the first clamping arm, and the second return elastic member is in a compressed state.
8. The clamping device according to claim 7, wherein, The return mechanism also includes a return fixing column, which is arranged at the fixed end of the rotating electromagnetic drive mechanism. The second return elastic member is a torsion spring, which includes an elastic body and two elastic rods connected to the two sides of the elastic body. The elastic body is sleeved on the return fixing column, and the two elastic rods are respectively arranged on the deformation baffle and the first clamping arm.
9. The clamping device according to claim 4, wherein, The end of the first opening and closing clamping jaw and / or the end of the second opening and closing clamping jaw is provided with a receiving platform, and the receiving platform is used to receive the cup edge of the reaction cup.
10. The clamping device according to claim 4, characterized in that, The first opening and closing plate, and / or the second opening and closing plate is made of polyetheretherketone material.