CN217350693U

CN217350693U - Test tube screw cap mechanism

Info

Publication number: CN217350693U
Application number: CN202221810392.4U
Authority: CN
Inventors: 蔡磊; 李岳峻; 张趁; 王林杰
Original assignee: Henan Institute of Science and Technology
Current assignee: Henan Institute of Science and Technology
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-09-02
Anticipated expiration: 2032-07-14

Abstract

The utility model provides a test tube cap screwing mechanism, which comprises a turntable, wherein a cap screwing device is arranged above the turntable, the cap screwing device comprises a first driving motor which is arranged by a lifting mechanism in a lifting way, the end part of a driving shaft of the first driving motor is fixedly provided with a mounting seat, and a clamp holder used for clamping a test tube cap is arranged on the mounting seat; the positioning device is arranged on one side of the barrel and comprises a telescopic mechanism, a telescopic head is fixedly arranged at the top end of a telescopic rod of the telescopic mechanism and corresponds to the middle of the side wall of the barrel, a through hole for the telescopic head to pass through is formed in the side wall of the barrel corresponding to the telescopic head, and the extending direction of the telescopic rod faces the through hole. Through set up the through-hole on the lateral wall of barrel to make flexible head can the butt fix a position the test tube on the test tube in the test tube storage tank, simplify the structure of fixing a position the test tube, improve simultaneously screw-cap structure and carousel both holistic compactedness.

Description

Test tube screw cap mechanism

Technical Field

The utility model relates to a nucleic acid detection technology, concretely relates to test tube screw cap mechanism.

Background

Need collect the head of pharynx swab cotton swab through the test tube after the pharynx swab adopts the process, then send the test tube to checking machine and construct and handle, for realizing the automation, the mechanical structure that often designs uncaps and close the lid to the test tube.

CN213761866U A cover opener capable of automatically opening a cover of a test tube for holding a throat swab, which comprises a base; the placing seat is used for placing a test tube containing a throat swab and is arranged on the base; the tube body clamping device is used for clamping and fixing the tube body of the test tube placed on the placing seat, and the tube body clamping device is arranged on the base; a test tube cover clamping and rotating device for opening the test tube cover at the upper end of the test tube clamped and fixed by the tube body clamping device from the upper part of the test tube cover, wherein the test tube cover clamping and rotating device is arranged on the base through a lifting device; the control device is used for controlling the tube body clamping device, the test tube cover clamping and rotating device and the lifting device to be linked, and the control device is in communication connection with the tube body clamping device, the test tube cover clamping and rotating device and the lifting device respectively. The static clamping block is used for clamping one side of the tube body of the test tube and is arranged on one side of the base; the dynamic clamping block is used for clamping the other side of the tube body of the test tube and corresponds to the static clamping block, the dynamic clamping block is arranged on the other side of the base, and a first pressure sensor is arranged on the dynamic clamping block and is in communication connection with the control device. The clamping structure is complex, and the application range is narrow.

The screw capping structure of test tube is most including the clamping jaw that is used for fixed test tube and the rotary device that is used for unscrewing test tube lid or closing, but the process of clamping jaw centre gripping test tube is more complicated and time-consuming, in addition, when the screw capping structure carries out the screw capping to the test tube on the carousel, both occupation space of screw capping structure and carousel structure are great.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model provides a test tube screw cap mechanism, aim at simplify the structure of fixed test tube, improve both holistic compactedness in screw cap structure and carousel.

A test tube screw-capping mechanism comprises a rotary disc, wherein the rotary disc comprises a cylinder body with an upward opening, a rotary disc is rotatably mounted in the cylinder body, a notch is formed in the outer circumference of the rotary disc, and a test tube accommodating groove is formed between the notch and the side wall of the cylinder body; a cover screwing device is arranged above the rotary table and comprises a first driving motor which is arranged in a lifting mode through a lifting mechanism, an installation seat is fixedly arranged at the end portion of a driving shaft of the first driving motor, and a clamp holder used for clamping a test tube cover is arranged on the installation seat; the positioning device comprises a telescopic mechanism, a telescopic head of the telescopic mechanism corresponds to the middle of the side wall of the cylinder, a through hole for the telescopic head to pass through is formed in the position, corresponding to the telescopic head, of the side wall of the cylinder, and the moving direction of the telescopic head faces towards the through hole.

For the stability of control driving motor goes up and down and packing driving motor, further: the lifting mechanism comprises a fixed seat which is fixedly arranged, a vertical screw rod is rotatably arranged on the fixed seat, a second driving motor is fixedly arranged at a position, located at one end of the screw rod, on the fixed seat, the screw rod is driven by the second driving motor, the screw pitch on the screw rod is smaller than that on the test tube cover, a moving block is in threaded fit on the screw rod, the upper portion of the first driving motor is fixedly connected onto the moving block, and the middle portion of the first driving motor is slidably arranged on the fixed seat.

Further comprises the following steps: the holder includes vertical first clamping jaw and second clamping jaw, first clamping jaw and second clamping jaw are arc structure and concave surface between them sets up in opposite directions form the centre gripping groove that is used for centre gripping test tube lid between first clamping jaw and the second clamping jaw, be equipped with actuating mechanism in the mount pad, the upper end round trip movement of first clamping jaw and second clamping jaw sets up on the mount pad and with actuating mechanism links.

In order to improve the stability of first clamping jaw and second clamping jaw, draw up, further be: dovetail grooves are formed in the positions, corresponding to the first clamping jaw and the second clamping jaw, of the mounting seat, sliding blocks are fixedly arranged at the positions, corresponding to the dovetail grooves, of the first clamping jaw and the second clamping jaw, and the sliding blocks are matched with the dovetail grooves and are in sliding fit with the dovetail grooves.

In order to ensure the synchronism of the first clamping jaw and the second clamping jaw, the method further comprises the following steps: the driving mechanism is characterized in that a driving gear is fixedly sleeved on a driving shaft of the driving mechanism, an installation chamber is arranged in the installation seat and corresponds to the middle of the sliding block, the middle of the sliding block is located in the installation chamber, the driving gear is located between the sliding blocks of the first clamping jaw and the second clamping jaw, the sliding block is provided with a rack corresponding to the driving gear, and the sliding block is meshed with the driving gear.

Further comprises the following steps: telescopic machanism includes third driving motor's drive shaft department has set firmly the second fixing base the worm is installed to second fixing base internal rotation, the axial of worm with the moving direction of flexible head is the same the turbine of solid cover in third driving motor's the drive shaft with the worm meshing threaded fit has the slide on the worm, the slide slides and is provided with on the second fixing base, flexible head sets firmly on the slide.

The utility model has the advantages that: through set up the through-hole on the lateral wall of barrel to make flexible head can the butt fix a position the test tube on the test tube in the test tube storage tank, simplify the structure of fixing a position the test tube, improve simultaneously screw-cap structure and carousel both holistic compactedness.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged schematic view of region A in FIG. 1;

FIG. 3 is a schematic view of the construction of the screw-capping machine;

FIG. 4 is a cross-sectional view of a first drive motor;

fig. 5 is a sectional view of the telescopic mechanism.

In the figure, 31, the screw-capping device; 32. a first drive motor; 33. a positioning device; 331. a third drive motor; 332. a slide base; 333. a worm; 334. a second fixed seat; 34. a telescopic head; 35. a screw; 36. a moving block; 37. a mounting seat; 371. a dovetail groove; 372. an installation chamber; 373. a drive mechanism; 374. a drive gear; 38. a holder; 381. a slider; 39. a fixed seat; 391. a second drive motor; 71. a barrel; 713. a through hole; 72. rotating the disc; 721. a notch; 100. test tubes.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention. The terms of left, middle, right, upper and lower directions in the examples of the present invention are only relative concepts or reference to the normal use status of the product, and should not be considered as limiting.

A test tube screw-capping mechanism, as shown in fig. 1, comprising a rotary disc, wherein the rotary disc comprises a cylinder 71 with an upward opening, a rotary disc 72 is rotatably mounted in the cylinder 71, a gap 721 is formed on the outer circumference of the rotary disc 72, and the test tube accommodating groove is formed between the gap 721 and the side wall of the cylinder 71; a cap screwing device 31 is arranged above the turntable, the cap screwing device 31 comprises a first driving motor 32 which is arranged in a lifting way through a lifting mechanism, an installation seat 37 is fixedly arranged at the end part of a driving shaft of the first driving motor 32, and a clamp 38 for clamping a test tube cap is arranged on the installation seat 37; a positioning device 33 is disposed on one side of the cylinder 71, the positioning device 33 includes a telescopic mechanism, a telescopic head 34 of the telescopic mechanism corresponds to a middle portion of a side wall of the cylinder 71, a through hole 713 for allowing the telescopic head 34 to pass through is disposed on the side wall of the cylinder 71 at a position corresponding to the telescopic head 34, and a moving direction of the telescopic head 34 faces the through hole 713. As shown in fig. 3, the lifting mechanism includes a fixed seat 39, a vertical screw 35 is rotatably mounted on the fixed seat 39, a second driving motor 391 is fixedly mounted on the fixed seat 39 at one end of the screw 35, the screw 35 is driven by the second driving motor 391, a moving block 36 is screwed on the screw 35, an upper portion of the first driving motor 32 is fixedly connected to the moving block 36, and a middle portion of the first driving motor 32 is slidably disposed on the fixed seat 39.

Wherein, combine as shown in fig. 2, holder 38 includes vertical first clamping jaw and second clamping jaw, first clamping jaw and second clamping jaw are arc structure and concave surface between them sets up in opposite directions form the centre gripping groove that is used for centre gripping test tube cover between first clamping jaw and the second clamping jaw, are equipped with actuating mechanism in mount pad 37, the upper end round trip movement of first clamping jaw and second clamping jaw sets up on the mount pad 37 and with the actuating mechanism linkage. Dovetail grooves 371 are respectively arranged on the mounting base 37 at positions corresponding to the first clamping jaw and the second clamping jaw, slide blocks 381 are fixedly arranged on the first clamping jaw and the second clamping jaw at positions corresponding to the dovetail grooves 371, and the slide blocks 381 are matched with the dovetail grooves 371 and are in sliding fit with the dovetail grooves 371. As shown in fig. 4, a driving gear 374 is fixedly sleeved on the driving shaft of the driving mechanism 373, an installation chamber 372 is arranged in the installation seat 37 at a position corresponding to the middle of the sliding block, the middle of the sliding block 381 and the driving gear 374 are both located in the installation chamber 372, the driving gear 374 is located between the sliding blocks 381 of the first clamping jaw and the second clamping jaw, a rack is arranged on the sliding block 381 at a position corresponding to the driving gear 374, and the sliding block 381 is meshed with the driving gear 374. The driving mechanism 373 is a servo motor and drives the driving gear 374 to rotate, and the driving gear 374 drives the sliding blocks 381 of the first clamping jaw and the second clamping jaw to synchronously move, so that the first clamping jaw and the second clamping jaw are mutually close to each other or far away from each other.

In addition, the telescopic mechanism comprises a third driving motor 331, a second fixed seat 334 is fixedly arranged at a driving shaft of the third driving motor 331, a worm 333 is rotatably arranged in the second fixed seat 334, the axial direction of the worm 333 is the same as the moving direction of the telescopic head 34, a turbine fixedly sleeved on the driving shaft of the third driving motor 331 is meshed with the worm 333, a sliding seat 332 is in threaded fit with the worm 333, the sliding seat 332 is slidably arranged on the second fixed seat 334, and the telescopic head 34 is fixedly arranged on the sliding seat 332.

The utility model discloses a theory of operation: the test tube 100 is vertically placed into the test tube accommodating groove, the rotary disc 72 drives the test tube 100 to rotate to the through hole 713, the telescopic rod drives the telescopic head 34 to extend into the through hole 713 and abut against the test tube 100, then the lifting mechanism drives the first driving motor 32 to descend, the first driving motor 32 drives the clamp holder 38 to the test tube cover, the first driving motor 32 drives the test tube cover to rotate after the clamp holder 38 is clamped on the test tube cover, meanwhile, the lifting mechanism drives the first driving motor 32 and the test tube cover to synchronously ascend, when the ascending height of the first driving motor 32 is larger than the thread height of the test tube cover, the test tube is determined to be opened, then the telescopic mechanism drives the telescopic head 34 to return, the rotary disc 72 can drive the test tube to transfer to other stations, and the test tube cover is retained on the clamp holder 38; when the opened test tube 100 needs to be capped again, the rotating disc 72 drives the test tube cap to return, the lifting mechanism drives the first driving motor 32 to descend, the first driving motor 32 rotates when the gripper 38 approaches the test tube bottle, the first driving motor 32 and the test tube cap descend synchronously, the gripper 38 releases the test tube cap after the test tube cap is screwed on the test tube bottle, and the first driving motor 32 returns. Wherein, the lifting speed of the test tube cover is calculated according to the rotation speed of the test tube cover, the lifting speed of the first driving motor 32 is adjusted according to the lifting speed of the test tube cover, the lifting speed of the first driving motor 32 is determined by the rotation angle of the screw 35, the rotation angle of the screw 35 is controlled by the second driving motor 391, and the rotation speed of the mounting seat 37 is the rotation speed of the test tube cover and is controlled by the first driving motor 32.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a test tube screw capping mechanism which characterized in that: the test tube accommodating device comprises a rotary disc, wherein the rotary disc comprises a cylinder body with an upward opening, the rotary disc is rotatably mounted in the cylinder body, a notch is formed in the outer circumference of the rotary disc, and the test tube accommodating groove is formed between the notch and the side wall of the cylinder body; a cover screwing device is arranged above the rotary table and comprises a first driving motor which is arranged in a lifting mode through a lifting mechanism, an installation seat is fixedly arranged at the end portion of a driving shaft of the first driving motor, and a clamp holder used for clamping a test tube cover is arranged on the installation seat; the positioning device comprises a telescopic mechanism, a telescopic head of the telescopic mechanism corresponds to the middle of the side wall of the cylinder, a through hole for the telescopic head to pass through is formed in the position, corresponding to the telescopic head, of the side wall of the cylinder, and the moving direction of the telescopic head faces towards the through hole.

2. A test tube screw-cap mechanism according to claim 1, characterized in that: the lifting mechanism comprises a fixed seat which is fixedly arranged, a vertical screw rod is rotatably arranged on the fixed seat, a second driving motor is fixedly arranged at the position, located at one end of the screw rod, on the fixed seat, the screw rod is driven by the second driving motor, a moving block is in threaded fit with the screw rod, the upper portion of the first driving motor is fixedly connected to the moving block, and the middle portion of the first driving motor is slidably arranged on the fixed seat.

3. A test tube screw-cap mechanism according to claim 2, characterized in that: the holder includes vertical first clamping jaw and second clamping jaw, first clamping jaw and second clamping jaw are arc structure and concave surface between them sets up in opposite directions form the centre gripping groove that is used for centre gripping test tube lid between first clamping jaw and the second clamping jaw, be equipped with actuating mechanism in the mount pad, the upper end round trip movement of first clamping jaw and second clamping jaw sets up on the mount pad and with actuating mechanism links.

4. A test tube screw-cap mechanism according to claim 3, characterized in that: dovetail grooves are formed in the positions, corresponding to the first clamping jaw and the second clamping jaw, of the mounting seat, sliding blocks are fixedly arranged at the positions, corresponding to the dovetail grooves, of the first clamping jaw and the second clamping jaw, and the sliding blocks are matched with the dovetail grooves and are in sliding fit with the dovetail grooves.

5. A test tube screw-cap mechanism according to claim 4, characterized in that: the driving mechanism is characterized in that a driving gear is fixedly sleeved on a driving shaft of the driving mechanism, an installation chamber is arranged in the installation seat and corresponds to the middle of the sliding block, the middle of the sliding block is located in the installation chamber, the driving gear is located between the sliding blocks of the first clamping jaw and the second clamping jaw, the sliding block is provided with a rack corresponding to the driving gear, and the sliding block is meshed with the driving gear.

6. A test tube screw-cap mechanism according to claim 1, characterized in that: telescopic machanism includes third driving motor's drive shaft department has set firmly the second fixing base the worm is installed to second fixing base internal rotation, the axial of worm with the moving direction of flexible head is the same the turbine of solid cover in third driving motor's the drive shaft with the worm meshing threaded fit has the slide on the worm, the slide slides and is provided with on the second fixing base, flexible head sets firmly on the slide.