CN218261906U

CN218261906U - Cap screwing mechanism

Info

Publication number: CN218261906U
Application number: CN202222694434.9U
Authority: CN
Inventors: 郑成; 钟莲
Original assignee: Hollysys Automation Technologies Ltd
Current assignee: Hollysys Automation Technologies Ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-01-10
Anticipated expiration: 2032-10-13

Abstract

The utility model provides a cap screwing mechanism, which comprises a rotary motion motor, a rotary transmission shaft controlled by the rotary motion motor, a tensioning motion motor and a tensioning control shaft controlled by the tensioning motion motor and arranged on the rotary transmission shaft, wherein a clamping assembly for clamping and releasing a test tube cap is fixed on the rotary transmission shaft, and the elastic end of the clamping assembly is arranged around the rotary transmission shaft and is positioned below the tensioning control shaft; the test tube cover clamping device comprises a clamping assembly, a rotating transmission shaft, a tensioning control shaft, a tensioning movement motor, a clamping assembly, a rotating transmission shaft, a rotating assembly and a rotating movement motor, wherein the tensioning movement motor controls the tensioning control shaft to move up and down relative to the rotating transmission shaft, the tensioning control shaft enables the clamping assembly to clamp and release the test tube cover through releasing and ejecting an elastic end in the up and down movement, the rotating movement motor controls the rotating transmission shaft to drive the clamping assembly to rotate, and the test tube cover is screwed and unscrewed. The utility model discloses a test tube clamping-force of the different pipe diameters of elasticity self-adaptation of elasticity end need not more electric part and electric slip ring, has simplified system architecture and control mode, has solved the problem that the structure is complicated among the automatic spiral cover mechanism.

Description

Cap screwing mechanism

Technical Field

The utility model relates to an operation direction of relapse automatic switch lid of test tube, concretely relates to spiral cover mechanism.

Background

During early sampling of virus, bacteria and other pathogenic microorganisms, a sampling person needs to manually open a cover, sample and then close the cover. And when large-scale nucleic acid screening and sampling are carried out, the cover opening and closing operation is continuously and repeatedly carried out by only depending on manpower, which is a burden for sampling personnel and also influences the sampling efficiency. Therefore, a special automatic cover opening machine is needed to automatically open and close the cover, and the sampling efficiency is improved.

The automatic cover opening machine on the market at present mostly adopts the structural style of rotating electric claw or bi-motor plus electric slip ring, and wherein the structural style cost of rotating electric claw is higher, and the structure of bi-motor plus electric slip ring is more complicated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a spiral cover mechanism through the test tube clamping-force of the different pipe diameters of elasticity self-adaptation, need not more electric part and electric slip ring, has simplified system architecture and control mode, has solved the complicated problem of automatic spiral cover mechanism structure.

A cap screwing mechanism comprises a rotary motion motor, a rotary transmission shaft controlled by the rotary motion motor, a tensioning motion motor and a tensioning control shaft installed on the rotary transmission shaft and controlled by the tensioning motion motor, wherein a clamping assembly for clamping and releasing a test tube cap is fixed on the rotary transmission shaft, and the elastic end of the clamping assembly is arranged around the rotary transmission shaft and is positioned below the tensioning control shaft;

the tensioning control shaft is controlled by the tensioning motion motor to move up and down relative to the rotating transmission shaft, the elastic end is released and ejected by the tensioning control shaft in the up and down movement, so that the clamping assembly clamps and releases the test tube cover, and the rotating motion motor controls the rotating transmission shaft to drive the clamping assembly to rotate, screw and unscrew the test tube cover.

Preferably, the centre gripping subassembly comprises two sets of the same structures, and every group structure includes clamping jaw fixed block, clamping jaw switching piece and clamping jaw, the one end of clamping jaw fixed block is fixed rotatory transmission shaft's bottom, the other end of clamping jaw fixed block passes through elastic construction and connects the one end of clamping jaw switching piece forms the elasticity end, the other end fixed connection of clamping jaw switching piece the clamping jaw.

Preferably, the clamping jaw adapter block is connected with the clamping jaw fixing block at the elastic end, the tensioning control shaft jacks or releases the elastic end of the clamping jaw adapter block, and the contact surfaces of the lower end of the tensioning control shaft and the elastic end are surfaces which are mutually matched and are convenient for jacking movement.

Preferably, a bearing assembly is installed at the upper end of the tensioning control shaft, and the tensioning movement motor is connected with the bearing assembly through a tensioning transmission assembly to control the tensioning control shaft to move up and down relative to the rotating transmission shaft.

Preferably, a fixed test tube is arranged below the test tube cover, and a detection signal obtained by the test tube or a starting switch is arranged in the cap screwing mechanism to obtain a switching signal as a starting instruction so as to start the rotary motion motor and the tensioning motion motor.

Compared with the prior art, the utility model following beneficial effect has:

1. the utility model discloses well rotary motion motor and tensioning motion motor and relevant subassembly is all fixed to be arranged, has guaranteed that the centre gripping subassembly can infinitely rotate, has reduced electric part and electric sliding ring, and simple structure is reliable.

2. The utility model discloses in confirm the required clamp force of test tube lid centre gripping through the elasticity of elasticity end, guaranteed that the test tube clamping force with the specification is invariable, improved the reliability of test tube spiral cover. And the clamping assembly can be suitable for test tubes and test tube covers of different specifications, elastic parameters do not need to be adjusted, and the use is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary and that other implementation drawings may be derived from the drawings provided to one of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic structural view of a middle cap screwing mechanism of the present invention;

FIG. 2 isbase:Sub>A schematic view of the structure at A-A of FIG. 1;

the reference numbers in the figures:

the device comprises a rotary motion motor 1, a tensioning motion motor 2, a rotary transmission shaft 3, a tensioning transmission assembly 4, a tensioning control shaft 5, a rotary transmission assembly 6, a bearing assembly 7, a clamping assembly 8, a test tube 9, a test tube cover 10, a sensor 11 and a fixed rod 12, wherein the rotary motion motor is connected with the tensioning control shaft through a connecting rod;

80 is an elastic structure, 81 is a clamping jaw fixing block, 82 is a clamping jaw switching block, 83 is a clamping jaw, and 84 is a bottom fixing block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

As shown in fig. 1-2, a cap screwing mechanism comprises a rotary motion motor 1, a rotary transmission shaft 3 controlled by the rotary motion motor 1, a tensioning motion motor 2, and a tensioning control shaft 5 installed on the rotary transmission shaft 3 and controlled by the tensioning motion motor 2, wherein a clamping assembly 8 for clamping a test tube cap 10 is fixed on the rotary transmission shaft 3, and an elastic end of the clamping assembly 8 is arranged around the rotary transmission shaft 3 and is located below the tensioning control shaft 5.

Wherein, tensioning motion motor 2 control tensioning control shaft 5 is relative rotatory transmission shaft 3 up-and-down motion, tensioning control shaft 5 release and the elasticity end of pushing up open make in up-and-down motion 8 centre gripping subassemblies and release test tube cover 10, the control of rotatory motion motor 1 rotatory transmission shaft 3 drives clamping assembly 8 is rotatory, and the below of test tube cover 10 is equipped with test tube 9, screws and unscrews test tube cover 10 on the test tube 9.

The utility model provides a cap screwing mechanism, the tensioning movement motor 2 realizes the release of the elasticity of the elastic end and the overcoming action by controlling the up-and-down action of the tensioning control shaft 5, and further completes the action of clamping and releasing the test tube cap 10 by the clamping component 8; the rotary motion motor 1 drives the clamping assembly 8 to control the test tube cover 10 to be screwed and unscrewed, and all the components are fixedly mounted, can rotate infinitely, and are simple and reliable.

The utility model discloses in, centre gripping subassembly 8 comprises two sets of the same structures, and every group structure includes a clamping jaw fixed block 81, clamping jaw switching piece 82 and clamping jaw 83. The clamping assembly 8 further comprises a bottom fixing block 84, the two groups of structures share one bottom fixing block 84 and are used for being fixed at the bottom of the rotary transmission shaft 3 to support the clamping assembly 8, one end of the clamping jaw fixing block 81 is fixed on the side edge of the bottom fixing block 84, and the other end of the clamping jaw fixing block 81 is formed by connecting one end of the clamping jaw transfer block 82 with an elastic structure 80 and fixedly connecting the clamping jaw 83 with the other end of the clamping jaw transfer block 82. Two clamping jaws 83 of two sets of structures are located the below of rotatory transmission shaft 3 jointly, and the linking arm between clamping jaw switching piece 82 both ends is located adjacent side for the side that special-shaped arm is located rotatory transmission shaft 3 and both ends for elastic end and clamping jaw 83 all around the setting of rotatory transmission shaft 3 on the coplanar. The spring in this embodiment includes, but is not limited to, a compression spring, a tension spring, a spring plate, and the like.

In addition, at the elastic end that clamping jaw switching piece 82 with clamping jaw fixed block 81 is connected, tensioning control shaft 5 backs up or releases clamping jaw switching piece 82 the elastic end, the lower extreme of tensioning control shaft 5 with the contact surface of elastic end is mutual adaptation, the surface of being convenient for to back up the motion.

As shown in fig. 1, the lower end of the tension control shaft 5 may be conical, and the contact surface of the jaw adaptor block 82 and the tension control shaft 5, i.e., the contact surface of the elastic end, is an inclined surface, and the conical end portion facilitates releasing and ejecting the elastic end provided as the inclined surface during the up-and-down movement of the tension control shaft 5 with respect to the rotary transmission shaft 3. The contact surface of the lower end of the tensioning control shaft and the contact surface of the clamping jaw transfer block can be selected from the same conical surface, inclined surface, spherical surface, arc surface and the like, and can also be selected from different types of surfaces, so that the mutually-matched surfaces are mainly used for facilitating the jacking movement of the tensioning control shaft.

The clamping force required for clamping the test tube cover 10 can be determined by the elastic force of the elastic end, so that the action of releasing and clamping the test tube cover 10 is completed. But also can be suitable for test tubes and test tube covers with different specifications, does not need to adjust the elasticity parameter and is convenient to use.

In this embodiment, a bearing assembly 7 is installed at the upper end of the tensioning control shaft 5, the tensioning movement motor 2 is connected to the bearing assembly 7 through the tensioning transmission assembly 4, and the tensioning control shaft 5 is controlled to move up and down relative to the rotating transmission shaft 3, so that the friction force between the rotating shaft holes of the rotating transmission shaft 3 is reduced. The rotary motion motor 1 controls the rotary motion of the rotary drive shaft 3 through the rotary drive assembly 6.

The fixed test tube 9 is arranged below the test tube cover 10, and for further improving automation, the cap screwing mechanism can obtain a detection signal or a switch signal as a starting instruction by detecting whether the test tube 9 exists or setting a starting switch so as to start the rotary motion motor 1 and the tensioning motion motor 2. In general, a long fixing rod 12 may be provided on the cap screwing mechanism, and a sensor 11 is installed at the end of the fixing rod 12, and the height of the sensor 11 is within the length range of the test tube 9 for detecting whether there is a test tube 9. The cap screwing mechanism can be controlled to screw and unscrew the test tube cap 10 by an external signal input mode such as a foot switch or a manual switch.

The whole working process of the cap screwing mechanism is as follows: when the test tube 9 is detected or a starting instruction such as a switching signal is received, the clamping and cap screwing actions are automatically executed; when the test tube 9 or a start command such as a switch signal is detected again, the cover is automatically closed and the test tube 9 is released.

The working process of the screw cap is as follows: the tensioning movement motor 2 drives the tensioning transmission assembly 4, so that the tensioning control shaft 5 moves up and down relative to the rotating transmission shaft 3, and the lower end of the tensioning control shaft 5 is conical. When the tension control shaft 5 is controlled to move downwards, the conical shape at the lower end overcomes the elastic force of the elastic structure 80 to push the clamping jaw transfer blocks 82 distributed at two sides open, so that the clamping jaws 83 fixed on the two clamping jaw transfer blocks 82 are opened. When the control tension control shaft 5 goes upward, the conical shape of the lower end gradually disengages from the jaw transfer block 82, and the jaw transfer block 82 is folded under the elastic force of the elastic structure 80, so that the jaws 83 fixed thereon grip the test tube cover 10.

The clamping force of the clamping jaw 83 on the test tube cover 10 depends on the rigidity and the deformation amount of the elastic structure 80, and under the condition that the proper elastic structure 80 is selected, the diameter of the test tube 9 is larger, the deformation amount of the elastic structure 80 is larger, and the clamping force is larger, so that the clamping force of the small test tube 9 is small, the test tube cover 10 cannot be screwed too tightly, the clamping force is large when the test tube 9 is large, and the clamping jaw 83 and the test tube cover 10 cannot move relatively in the screwing process of the test tube cover 10.

The rotary motion motor 1 drives the rotary transmission shaft 3 to drive the jaw transfer block 82, so that the jaws 83 fixed on the jaw transfer block 82 rotate, and the test tube cover 10 is screwed and unscrewed in cooperation with the tensioning motion.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made to the disclosure by those skilled in the art within the spirit and scope of the disclosure, and such modifications and equivalents should also be considered as falling within the scope of the disclosure.

Claims

1. A capping mechanism, comprising:

the device comprises a rotary motion motor (1), a rotary transmission shaft (3) controlled by the rotary motion motor (1), a tensioning motion motor (2) and a tensioning control shaft (5) installed on the rotary transmission shaft (3) and controlled by the tensioning motion motor (2), wherein a clamping assembly (8) for clamping and releasing a test tube cover (10) is fixed on the rotary transmission shaft (3), and the elastic end of the clamping assembly (8) is arranged around the rotary transmission shaft (3) and is positioned below the tensioning control shaft (5);

wherein, tensioning motion motor (2) control tensioning control axle (5) is relative rotatory transmission shaft (3) up-and-down motion, in up-and-down motion tensioning control axle (5) make through release and top open the elasticity end centre gripping subassembly (8) centre gripping and release test tube lid (10), rotatory motion motor (1) control rotatory transmission shaft (3) drive centre gripping subassembly (8) are rotatory, screw and unscrew test tube lid (10).

2. A capping mechanism according to claim 1,

centre gripping subassembly (8) comprise two sets of the same structures, and every group structure includes clamping jaw fixed block (81), clamping jaw switching piece (82) and clamping jaw (83), the one end of clamping jaw fixed block (81) is fixed the bottom of rotatory transmission shaft (3), the other end of clamping jaw fixed block (81) passes through elastic construction (80) and connects the one end of clamping jaw switching piece (82) forms elasticity end, the other end fixed connection of clamping jaw switching piece (82) clamping jaw (83).

3. A capping mechanism according to claim 2,

clamping jaw switching piece (82) with clamping jaw fixed block (81) are connected the elasticity end, tensioning control shaft (5) are backed down or are released clamping jaw switching piece (82) the elasticity end, the lower extreme of tensioning control shaft (5) with the contact surface of elasticity end is mutual adaptation, the surface of being convenient for to back down the motion.

4. A capping mechanism according to claim 1,

the upper end part of the tensioning control shaft (5) is provided with a bearing assembly (7), the tensioning movement motor (2) is connected with the bearing assembly (7) through a tensioning transmission assembly (4), and the tensioning control shaft (5) is controlled to move up and down relative to the rotating transmission shaft (3).

5. A capping mechanism according to claim 1,

the below of test tube lid (10) is equipped with fixed test tube (9), through detecting among the spiral cover mechanism test tube (9) obtain the detected signal or set up starting switch and obtain switching signal for the start instruction, in order to start rotary motion motor (1) with tensioning motion motor (2).