Test tube clamping device

Abstract

The utility model relates to the technical field of test tube fusion sealing, and discloses a test tube clamping device which comprises a clamping assembly and a limiting assembly, the clamping assembly is provided with a fixing piece and two clamping pieces connected with the fixing piece, and the two clamping pieces can slide in the direction close to or away from each other; the limiting assembly is connected with the fixing piece or the clamping pieces and arranged between the two clamping pieces, a rotating groove matched with the outer diameter of the test tube is formed in the limiting assembly, and the limiting assembly can be rotationally arranged on the test tube in a sleeving mode through the rotating groove. When a test tube is subjected to heat sealing, the test tube is clamped through the two clamping pieces, the limiting assembly is arranged at the end, away from the heat sealing device, of the test tube in a sleeving mode through the rotating groove, and when the test tube needs to be rotated after being heated, the clamping force of the two clamping pieces on the test tube is reduced, so that the test tube can rotate relative to the two clamping pieces; the limiting assembly limits the test tube through the limiting groove, the end, away from the melting sealing device, of the rotating test tube is prevented from being suspended, and the test tube can stably rotate.

Description

TECHNICAL FIELD

[0001] The utility model relates to test tube clamping technical field, specifically relates to test tube clamping device. BACKGROUND

[0002] In the process of sealing the test tube, the clamping device needs to be used to clamp the test tube to the position of the flame jetting of the sealing equipment.

[0003] Publication No. CN113120294A discloses a kind of biological sample full-automatic packaging device, including clamping arm mechanism, clamping arm mechanism is set in the side of being clamped test tube, for stretching heat-softened test tube;Clamping arm mechanism includes clamping unit including two clamping pieces and clamping piece, two clamping pieces are arranged at intervals, clamping piece is respectively connected to two clamping pieces, for driving two clamping pieces to open or close;Clamping piece includes clamping arm and two fixed columns, clamping arm is set with two mutually parallel grooves on the side opposite to another clamping piece, fixed column is set in one-to-one correspondence with groove, one side of fixed column is embedded in groove and connected to clamping arm.

[0004] When clamping the test tube to be sealed by the above-mentioned clamping arm mechanism, the flame is acted on the test tube, in order to uniformly heat the circumference of the test tube, two clamping pieces need to loosen the test tube, so that the test tube can rotate relative to the clamping piece, but after loosening, the fixed column is disconnected from the test tube, and the rotation of the bottom of the test tube cannot be limited, so the circumference of the test tube cannot be uniformly heated. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the above technical deficiencies, and proposes a test tube clamping device to solve the technical problem that the test tube needing to rotate cannot be limited in the prior art.

[0006] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of test tube clamping device, comprising:

[0008] Clamping assembly has fixed piece and two clamping pieces connected with the fixed piece, and two clamping pieces can slide towards each other or away from each other;And

[0009] Limiting component is connected with the fixed piece or the clamping piece, and is arranged between two clamping pieces, the limiting component is provided with rotating groove matched with the outer diameter of test tube, and can be rotatably sleeved on the test tube through the rotating groove.

[0010] In one embodiment, the rotating groove penetrates the test tube limiting component.

[0011] In one of the embodiments, an end of the rotating groove is internally provided with a chamfer, and an inner diameter of the chamfer of the rotating groove gradually increases in a direction close to an end of the limiting assembly.

[0012] In one of the embodiments, the limiting assembly comprises a limiting block and a connecting arm, the limiting block is arranged between the two clamping members and is provided with the rotating groove, and the connecting arm connects the limiting block and the fixing member.

[0013] In one of the embodiments, the connecting arm and the fixing member are detachably connected.

[0014] In one of the embodiments, the clamping member comprises a clamping arm and at least two clamping claws, the clamping arm is connected to the fixing member, the clamping arms of the two clamping members can slide towards each other or away from each other, the at least two clamping claws are connected to the clamping arm and are spaced along an axial direction of the rotating groove.

[0015] In one of the embodiments, opposite sides of the clamping claw of the two clamping members are formed with notches matched with the peripheral wall of the test tube.

[0016] In one of the embodiments, the at least two clamping claws are arranged at two ends of the limiting block along an axial direction of the rotating groove.

[0017] In one of the embodiments, the clamping arm is provided with a plurality of lightening grooves.

[0018] In one of the embodiments, the clamping assembly is an electric clamping claw.

[0019] Compared with the prior art, the test tube clamping device provided by the utility model can clamp the test tube and drive the test tube to rotate when the test tube is sealed by melting, the test tube is clamped by the two clamping members, the limiting assembly is sleeved on the end of the test tube away from the melting device through the rotating groove, when the test tube needs to be rotated for heating, the clamping force of the two clamping members on the test tube is reduced, so that the test tube can rotate relative to the two clamping members, the limiting assembly limits the test tube through the limiting groove during the rotation of the test tube, so that the end of the rotating test tube away from the melting device is not suspended, the test tube can stably rotate, and the test tube can be uniformly heated. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the test tube clamping device provided by an embodiment of the utility model when clamping a test tube;

[0021] Figure 2 is a structural schematic view of the test tube clamping device provided by an embodiment of the utility model;

[0022] Figure 3 is a structure schematic view of a limiting assembly in a test tube clamping device according to an embodiment of the present application;

[0023] Figure 4 is a structure schematic view of a clamping piece in a test tube clamping device according to an embodiment of the present application.

[0024] Mark explanation:

[0025] Clamping assembly 1; fixing piece 11; clamping piece 12; clamping arm 121; weight-reducing groove 121a; clamping claw 122; notch 122a;

[0026] Limiting assembly 2; rotating groove 2a; limiting block 21; connecting arm 22;

[0027] Test tube 3. Specific implementation

[0028] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0029] In order to solve the technical problem that the clamping device in the prior art cannot limit the test tube 3 that needs to be rotated, the present application provides a test tube clamping device which can rotate the test tube 3 while limiting the rotating test tube 3.

[0030] It should be noted that the test tube clamping device described in the present application is used for but not limited to test tube 3 sealing, in order to facilitate the description, in the present application, only the test tube clamping device applied to the test tube 3 sealing equipment is taken as an example for description, and the principle of the test tube clamping device applied to other types of equipment is substantially the same as that applied to the test tube 3 sealing equipment, which will not be described here; It should be understood that the clamping device can also clamp other pipe materials of the type of test tube 3, and the principle is the same as that of clamping test tube 3, which will not be described here.

[0031] Please refer to Figure 2 , Figure 2 is a structure schematic view of a test tube clamping device according to an embodiment of the present application, the test tube clamping device comprises a clamping assembly 1 and a limiting assembly 2, the clamping assembly 1 has a fixing piece 11 and two clamping pieces 12 connected with the fixing piece 11, the two clamping pieces 12 can slide towards each other or away from each other; the limiting assembly 2 is connected with the fixing piece 11 or the clamping piece 12, and is arranged between the two clamping pieces 12, the limiting assembly 2 is provided with a rotating groove 2a matched with the outer diameter of the test tube 3, and can be rotatably sleeved on the test tube 3 through the rotating groove 2a.

[0032] Specifically, asFigure 1 As shown, when the test tube 3 is sealed, the sealing device clamps the test tube 3 and can drive the test tube 3 to rotate, the test tube 3 is clamped by the two clamping pieces 12, and the limiting assembly 2 is sleeved on the end of the test tube 3 away from the sealing device through the rotating groove 2a. When the test tube 3 needs to be rotated for heating, the clamping force of the two clamping pieces 12 on the test tube 3 is reduced, so that the test tube 3 can rotate relative to the two clamping pieces 12. During the rotation of the test tube 3, the limiting assembly 2 limits the test tube 3 through the limiting groove, so that the end of the rotating test tube 3 away from the sealing device is not suspended, and the test tube 3 can stably rotate, so that the test tube 3 can be uniformly heated.

[0033] When the test tube 3 is sealed, the test tube 3 is clamped by the two clamping pieces 12, and the test tube 3 is driven by the clamping device to rotate away from the sealing device. At this time, the upper half of the test tube 3 rotates, and the lower half is fixed, so that the test tube 3 is sealed and fused from the heated part, and the sealing of the test tube 3 is realized.

[0034] It should be understood that the rotating groove 2a can be a blind hole or can penetrate the limiting assembly 2. Specifically, as shown in Figure 1 and Figure 3 In one embodiment, the rotating groove 2a penetrates the limiting assembly 2.

[0035] By penetrating the test tube 3 with the rotating groove 2a, the limiting assembly 2 can be sleeved on the middle part of the test tube 3 through the rotating groove 2a, reducing the distance between the rotating section of the test tube 3 and the part sleeved by the limiting assembly 2, so that the test tube 3 can rotate more stably.

[0036] In order to facilitate the limiting assembly 2 to be sleeved on the test tube 3 through the rotating groove 2a, as shown in Figure 3 In one embodiment, a chamfer is provided inside one end of the rotating groove 2a, and the inner diameter of the chamfer of the rotating groove 2a gradually increases in the direction of the end close to the limiting assembly 2.

[0037] When the rotating assembly is sleeved on the test tube 3 through the rotating groove 2a, the side of the rotating groove 2a provided with the chamfer is sleeved on the test tube 3 first, which can guide the sleeving of the rotating assembly and avoid the rotating assembly being stuck at the bottom of the test tube 3.

[0038] It should be understood that the limiting assembly 2 can be a limiting support, a limiting strip, a limiting plate, etc. Specifically, as shown in Figure 2 In one embodiment, the limiting assembly 2 includes a limiting block 21 and a connecting arm 22, the limiting block 21 is arranged between the two clamping pieces 12 and is provided with a rotating groove 2a, and the connecting arm 22 connects the limiting block 21 and the fixing piece 11.

[0039] In this embodiment, the limiting block 21 can be sleeved on the test tube 3 through the rotating groove 2a, and the connecting arm 22 realizes the connection between the fixing member 11 and the limiting block 21, thereby realizing the rotational limitation of the limiting block 21 and the test tube 3.

[0040] It should be understood that the limiting block 21 and the fixing member 11 can be fixedly connected, or the connection can be achieved in other ways, such as... Figure 2 As shown, in one embodiment, the connecting arm 22 is detachably connected to the fixing member 11.

[0041] In this embodiment, the connecting arm 22 and the fixing member 11 are connected in a detachable manner. When the limiting block 21 is worn, the connecting arm 22 can be removed from the fixing member 11 to replace the limiting component 2.

[0042] It should be understood that the clamping component 12 can be a clamping plate, a clamping block, etc., and the number of clamping claws in the clamping component 12 can be one, two, three, etc. Specifically, for example... Figure 2 As shown, in one embodiment, the clamping member 12 includes a clamping arm 121 and at least two clamping claws 122. The clamping arm 121 is connected to the fixing member 11, and the clamping arms 121 of the two clamping members 12 can slide in a direction that is closer to or further away from each other. The at least two clamping claws 122 are connected to the clamping arm 121 and are distributed at intervals along the axial direction of the rotating groove 2a.

[0043] By configuring the clamping member 12 as a clamping arm 121 and at least two spaced clamping claws 122, when the clamping member 12 clamps the test tube 3, the spaced clamping claws 122 clamp the test tube 3, which can clamp the test tube 3 at multiple positions to achieve a stable clamping of the test tube 3.

[0044] It should be understood that the gripper 122 can be a rod, a block, or a strip structure, etc.; the number of grippers 122 in the gripper 12 can be one, two, three, etc.

[0045] To increase the contact area between the gripper 122 and the test tube 3 for better gripping of the test tube 3, therefore, as follows: Figure 2 and Figure 4 As shown, in one embodiment, the opposing sides of the clamping claws 122 of the two clamping members 12 are provided with notches 122a that cooperate with the peripheral wall of the test tube 3.

[0046] In the embodiment, the inner wall at the notch 122a is attached to the peripheral wall of the test tube 3 when the clamping jaw 122 clamps the test tube 3, thereby increasing the contact area between the clamping jaw 122 and the test tube 3. Meanwhile, the notches 122a of the clamping jaws 122 located on both sides of the axis of the rotating groove 2a can be combined to form a ring-shaped structure, and the test tube 3 is sleeved in the ring-shaped structure to limit the movement of the test tube 3 relative to the clamping jaw 122.

[0047] It should be understood that the clamping jaw 122 can be arranged on one side of the limiting block 21, or on both sides of the limiting block 21. Specifically, as shown in Figure 2 , in one of the embodiments, at least two clamping jaws 122 are arranged at both ends of the limiting block 21 along the axis of the rotating groove 2a.

[0048] In the embodiment, by arranging at least two clamping jaws 122 on both sides of the limiting block 21, the clamping jaw 122 can clamp the test tube 3 at both ends of the limiting block 21, so that the clamping position of the test tube 3 is at both ends of the limiting block 21, and the rotating groove 2a of the limiting block 21 cooperates to limit the test tube 3, so that the test tube 3 can be more stably clamped by the clamping jaw 122.

[0049] In order to reduce the weight of the clamping arm 121, as shown in Figure 2 and Figure 4 , in one of the embodiments, the clamping arm 121 is provided with a plurality of lightening grooves 121a.

[0050] In the embodiment, by arranging the lightening grooves 121a on the clamping arm 121, the weight of the clamping arm 121 can be reduced, and the influence on the structural strength of the clamping arm 121 is minimized.

[0051] It should be understood that the clamping assembly 1 can be a pneumatic clamping jaw, a hydraulic clamping jaw, etc. Specifically, as shown in Figure 1 and Figure 2 , in one of the embodiments, the clamping assembly 1 is an electric clamping jaw, the fixing part 11 of the clamping assembly 1 is a driving unit of the electric clamping jaw, which includes a motor (not shown in the figure) and a speed reducer (not shown in the figure), is responsible for converting electrical energy into mechanical energy, and reducing the speed to increase the torque through the speed reducer, to drive the opening and closing action of the clamping part 12, the two clamping parts 12 of the clamping assembly 1 are composed of a clamping jaw body and a transmission mechanism (not shown in the figure), which directly contacts and clamps the object, and the transmission mechanism is responsible for converting the rotary motion of the motor into the linear movement of the clamping jaw.

[0052] In the embodiment, the clamping assembly 1 is arranged as an electric clamping jaw, the electric clamping jaw can detect the clamping force applied to the test tube 3, and the size of the detected clamping force can determine whether the electric clamping jaw clamps the test tube 3 and whether the test tube 3 is clamped correctly.

[0053] The specific implementation of the utility model above does not constitute a limitation on the protection scope of the utility model. Any various other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A test tube clamping device, characterized by, The test tube clamping device comprises: a clamping assembly having a fixing member and two clamping members connected to the fixing member, the two clamping members being capable of sliding towards each other or away from each other; and a limiting assembly connected to the fixing member or the clamping member and arranged between the two clamping members, the limiting assembly being provided with a rotating groove matched with the outer diameter of the test tube and being capable of being rotatably sleeved on the test tube through the rotating groove.

2. The test tube clamping device according to claim 1, wherein: the rotating groove penetrates through the test tube limiting assembly.

3. The test tube clamping device according to claim 1, wherein: an inner end of the rotating groove is provided with a chamfer, and the inner diameter of the chamfer of the rotating groove gradually increases along the direction towards the end of the limiting assembly.

4. The test tube clamping device according to claim 1, wherein: the limiting assembly comprises a limiting block and a connecting arm, the limiting block is arranged between the two clamping members and is provided with the rotating groove, and the connecting arm connects the limiting block and the fixing member.

5. The test tube clamping device according to claim 4, wherein: the connecting arm is detachably connected to the fixing member.

6. The test tube clamping device according to claim 4, wherein: the clamping member comprises a clamping arm and at least two clamping claws, the clamping arm is connected to the fixing member, and the clamping arms of the two clamping members are capable of sliding towards each other or away from each other, the at least two clamping claws are connected to the clamping arm and are distributed along the axial direction of the rotating groove.

7. The test tube clamping device according to claim 6, wherein: opposite sides of the clamping claws of the two clamping members are formed with notches matched with the peripheral wall of the test tube.

8. The test tube clamping device according to claim 6, wherein: the at least two clamping claws are arranged at both ends of the limiting block along the axis of the rotating groove.

9. The test tube clamping device according to claim 6, wherein: the clamping arm is provided with a plurality of lightening grooves.

10. The test tube clamping device according to claim 1, wherein: the clamping assembly is an electric clamping claw.

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