CN219136320U

CN219136320U - Cover opening device

Info

Publication number: CN219136320U
Application number: CN202223573246.7U
Authority: CN
Inventors: 李江铧; 曾波; 解亚平; 戴立忠
Original assignee: Hunan Yuanjing Intelligent Manufacturing Technology Co ltd
Current assignee: Hunan Yuanjing Intelligent Manufacturing Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-06
Anticipated expiration: 2032-12-30

Abstract

The utility model provides a cover opening device which comprises clamping jaw seats and clamping arms arranged on the clamping jaw seats, wherein at least 2 clamping arms are arranged, the clamping arms are hinged with the clamping jaw seats, the first ends of the clamping arms are chucks, and the second ends of the clamping arms are provided with first inclined planes; the inclined surface pushing blocks are provided with second inclined surfaces which are in one-to-one correspondence with the first inclined surfaces, so that the action of the clamping arms is controlled through the inclined surface pushing blocks; the clamping jaw driving assembly is connected with the inclined surface pushing block, the clamping jaw driving assembly is matched with the inclined surface at the tail end of the clamping arm through the inclined surface pushing block, the clamping and loosening actions of the clamping head are controlled, the clamping jaw driving assembly is simple in structure, compact in arrangement and convenient to control, smooth in clamping and follow-up cap screwing operation is guaranteed, the clamping jaw driving assembly is suitable for miniaturized equipment, a plurality of cap screwing operations can be flexibly arranged, operation efficiency is improved, and detection cost is reduced.

Description

Cover opening device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a cover opening device.

Background

Nucleic acid is a biological macromolecular compound polymerized from many nucleotides, and is one of the most basic substances for life. Nucleic acids are widely found in all animal and plant cells and microorganisms, and nucleic acids in organisms are often combined with proteins to form nucleoproteins. With the popularization of gene detection, personalized medicine administration, prenatal diagnosis and the like, the limitation of the traditional DNA extraction method is more and more obvious today in the fields of the biological industry in pursuit of high throughput and automation. The magnetic bead method for extracting nucleic acid has been gaining attention because of its capability of realizing automatic extraction, mass operation, simple operation and short time.

In the process of extracting nucleic acid by the magnetic bead method in the prior art, a biological sample is usually filled in a test tube, and obviously, the test tube is provided with a test tube cover to seal the test tube from contamination of the biological sample. Therefore, the test tube cover needs to be opened during operation, the labor intensity is high and the efficiency is low by adopting a manual opening mode, the method is not suitable for the current requirement of nucleic acid detection, and the problem of efficiency can be solved by means of automatic equipment.

The automatic cover opening machine comprises a frame, a pipe frame, a plurality of cover opening mechanisms, a Y-direction driving assembly and a Z-direction driving assembly, wherein the Y-direction driving assembly and the Z-direction driving assembly are fixed on the frame, and the cover opening mechanisms comprise cover opening heads, transmission assemblies and torsion limiting assemblies. The scheme is characterized in that the cover is opened through the cooperation of saw transmission teeth.

The other automatic cover opener in the prior art comprises a first driving mechanism, a second driving mechanism, a third driving mechanism, a base and a grabbing clamp, wherein the first driving mechanism is used for driving the grabbing clamp to do reciprocating motion in the vertical direction, the second driving mechanism is used for driving the grabbing clamp to do rotary motion, and the third driving mechanism is used for driving the grabbing clamp to do clamping or loosening motion. The third driving mechanism comprises a third motor and a gear, an output shaft of the third motor is connected with the gear, the grabbing clamp comprises a left clamping arm and a right clamping arm, racks are arranged above the left clamping arm and the right clamping arm along the horizontal direction, the racks are matched with the gear, and when the third motor is driven, the left clamping arm and the right clamping arm of the clamping jaw can be clamped or loosened. Therefore, the scheme can be further replaced by a mode with simpler structure and lower cost by controlling the clamping or loosening action of the clamping jaw through the motor and the gear.

Disclosure of Invention

The purpose of the utility model is that: the cover opening device is simpler in structure and lower in cost.

In order to achieve the above purpose, the utility model provides an uncovering device, which comprises clamping jaw seats and clamping arms arranged on the clamping jaw seats, wherein the number of the clamping arms is at least 2;

the clamping arm is hinged with the clamping jaw seat, a first end of the clamping arm is a clamping head, and a second end of the clamping arm is provided with a first inclined surface;

the inclined surface pushing blocks are provided with second inclined surfaces which are in one-to-one correspondence with the first inclined surfaces, so that the action of the clamping arms is controlled through the inclined surface pushing blocks;

the clamping jaw driving assembly comprises a transmission shaft and a linear transmission part, the first end of the transmission shaft is connected with the inclined surface pushing block, the second end of the transmission shaft is connected with the linear transmission part, and the linear transmission part is in transmission connection with the linear driving mechanism;

the transmission shaft is also connected with a rotary transmission part, and the rotary transmission part is in transmission connection with the rotary driving mechanism.

Further, the clamping jaw seat is provided with a mounting groove, and the second end of the clamping arm is positioned in the mounting groove.

Further, the clamping jaw seat is provided with a first hinge hole, the clamping arm is provided with a second hinge hole corresponding to the first hinge hole, and the clamping arm is hinged with the clamping jaw seat through a hinge piece.

Further, when the inclined surface pushing block moves along the first direction, the first inclined surface of the clamping arm is outwards extruded through the second inclined surface, so that the clamping head is inwards closed to clamp materials, and when the inclined surface pushing block resets along the second direction, the clamping head is loosened.

Further, an elastic piece is arranged between the second ends of the clamping arms.

Further, the elastic piece is a pull spring.

Further, the total length of the clamping arm is 30-40 mm, and the hinge point of the clamping arm is 10-13 mm away from the second end of the clamping arm.

Further, the included angle of the first inclined plane relative to the central axis of the clamping arm is 25-35 degrees, and the included angle of the second inclined plane relative to the central axis of the inclined plane pushing block is 40-45 degrees.

Further, the transmission shaft is a spline shaft, the rotary transmission part is sleeved on the transmission shaft and rotates synchronously with the transmission shaft, the transmission shaft can stretch and retract relative to the rotary transmission part, and transmission teeth are formed on the outer surface of the rotary transmission part.

Further, the cover opening devices are arranged in the same row, and the rotary driving mechanism is matched with each transmission tooth through rack synchronization.

The scheme of the utility model has the following beneficial effects:

according to the uncovering device provided by the utility model, the clamping head is controlled to finish clamping and loosening actions through the matching of the inclined surface pushing block and the inclined surface at the tail end of the clamping arm, the structure is simple, the arrangement is compact, the control is convenient, the smooth proceeding of clamping and subsequent capping operation is ensured, the uncovering device is suitable for small-sized equipment, a plurality of capping operations can be flexibly arranged to simultaneously carry out, the operation efficiency is improved, and the cost of manufacturing, nucleic acid detection and the like is reduced;

according to the utility model, the clamping and loosening control of the chuck and the transmission of the screw cap can be synchronously completed by virtue of the transmission shaft in the form of the spline shaft, the design is reasonable, the arrangement is further simplified, and the use convenience of the device is improved;

other advantageous effects of the present utility model will be described in detail in the detailed description section which follows.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an exploded view of the internal structure of the jaw housing of the present utility model;

FIG. 3 is a schematic diagram of a four-chuck structure;

FIG. 4 is a schematic drawing of a pull spring installation of the present utility model;

FIG. 5 is a schematic view of a propeller shaft installation of the present utility model;

fig. 6 is an exploded view of the propeller shaft of the present utility model.

[ reference numerals description ]

1-clamping jaw seat; 2-clamping arms; 3-clamping heads; 4-a first inclined plane; 5-an inclined surface pushing block; 6-a second inclined plane; 7-a mounting groove; 8-a first hinge hole; 9-a second hinge hole; 10-pulling a spring; 11-a transmission shaft; 12-a linear transmission part; 13-a rotation transmission part; 14-a rotating member; 15-a spline inner shaft; 16-driving teeth; 17-bearing.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a locked connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 and 2, an embodiment of the present utility model provides an uncapping device, which includes a jaw base 1 and a clamping arm 2 disposed on the jaw base 1. The present embodiment is described by taking a pair as an example, and in other embodiments, the number of the clamping arms 2 may be three, four or more, such as four shown in fig. 3, which can be flexibly selected by a person skilled in the art according to the requirement of opening the cover.

The clamp arm 2 and the clamping jaw seat 1 adopt a hinged mode so as to be capable of rotating relative to a hinged point. The first end of the clamping arm 2 is a clamping head 3, and the contact surface of the clamping head 3 and the cover can be provided with an arc surface, a friction-increasing material and the like, so that the cover can be smoothly opened. The second end of the clamping arm 2 is provided with a first inclined plane 4, meanwhile, a movable inclined plane pushing block 5 is arranged in the clamping jaw seat 1, the inclined plane pushing blocks 5 are provided with second inclined planes 6 which are in one-to-one correspondence with the first inclined planes 4, when the inclined plane pushing blocks 5 move in the clamping jaw seat 1, the first inclined planes 4 are contacted with the second inclined planes 6 and exert corresponding force, so that the second inclined planes 6, namely the second end of the clamping arm 2, rotate around a hinge point, and the clamping head 3 at the first end also rotates around the hinge point.

The inclined surface pushing block 5 is connected with the clamping jaw driving assembly, and the clamping jaw driving assembly can drive and control the inclined surface pushing block 5 to move. In this embodiment, when the inclined surface pushing block 5 moves vertically downward in the first direction, that is, when the inclined surface pushing block 5 moves vertically downward, the second inclined surface 6 contacts with the first inclined surface 4 and presses the second end of the clamping arm 2 to the outer side of the clamping jaw seat 1, so that the clamping heads 3 draw close to the inner side, and the multiple clamping heads 3 clamp the cover, thereby ensuring that the subsequent cover screwing action is performed smoothly. Conversely, when the inclined surface pushing block 5 moves in the second direction, i.e., vertically upward, the second inclined surface 6 is gradually separated from the first inclined surface 4, the first inclined surface 4 is no longer subjected to the pressing force, and at this time, the whole clamp arm 2 is in a free rotation and relaxation state, and the cover is released, so that the subsequent operation can be performed.

In this embodiment, the jaw seat 1 is provided with a mounting groove 7, and the second end of the clamping arm 2 is located in the mounting groove 7. The mounting groove 7 has notches on the bottom surface and the side surface of the clamping jaw seat 1, so that the second end of the clamping arm 2 extends downwards from the mounting groove 7 to the clamping jaw seat. When the inclined surface pushing block 5 moves downwards to press the second end of the clamping arm 2 to the outside, the part is not blocked by the inner structure of the clamping jaw seat 1, and the whole rotation action can be successfully completed. Therefore, through the arrangement of the mounting groove 7, the whole size of the clamping jaw seat 1 can be smaller and the structure is more compact while the rotation action of the clamping arm 2 is ensured, and particularly, eight-row test tubes are required to be simultaneously operated in the field of nucleic acid detection, so that the whole arrangement size can be remarkably reduced, and the purpose of miniaturized application is achieved.

In this embodiment, the jaw base 1 is provided with a first hinge hole 8, the clamp arm 2 is provided with a second hinge hole 9 corresponding to the first hinge hole 8, and the hinge member, for example, a hinge pin, passes through the second hinge hole 9 and is fixed at both ends with the corresponding first hinge hole 8, so that the clamp arm 2 is hinged with the jaw base 1, and the clamp arm 2 can freely rotate relative to the jaw base 1.

Since the inclined push block 5 can only drive the chuck 3 to clamp vertically downwards, when the inclined push block 5 is vertically upwards, the chuck 3 is only in a loose state and cannot be completely opened, and further operation or screwing of a next group of test tubes may be disadvantageous, as a further improvement, an elastic member is further provided between the second ends of the two clamping arms 2 in the embodiment, and specifically as shown in fig. 4, the elastic member is a pull spring 10, and the elastic force of the elastic member is used for pulling the second ends of the clamping arms 2 inwards, so that the chuck 3 at the first ends of the clamping arms 2 is outwards opened.

Through the arrangement of the pull spring 10, the clamping jaw 3 can be directly opened to a preset angle by means of elastic force when required to be opened, so that the clamping jaw can be smoothly moved to the outer side and then folded for clamping when a test tube or a cover is clamped later, and the reliability of the device is further improved.

In this embodiment, the hinge point of the arm rest 2 is taken as the boundary position, the part of the arm rest 2 below the hinge point is generally referred to as the first end, the part of the arm rest 2 above the hinge point is generally referred to as the second end, the two ends of the pull spring 10 are hooked and hook the connecting pin at the second end of the arm rest 2, and the position of the connecting pin can be adjusted according to the actual situation, so that the pull spring 10 can pull the chuck 3 to open.

As a preferred embodiment, the total length of the clamping arm 2 is set to be 30-40 mm in the embodiment, and the hinge point of the clamping arm 2 is 10-13 mm away from the second end of the clamping arm 2, so that the clamping stability is ensured in the range, and the whole size of the device is small.

Meanwhile, the included angle of the first inclined plane 4 relative to the central axis of the clamping arm 2 is 25-35 degrees, and the included angle of the second inclined plane 6 relative to the central axis of the inclined plane pushing block 5 is 40-45 degrees. It will be appreciated that the central axis of the inclined pusher 5 is fixed, for example, when the device is arranged vertically, the central axis of the inclined pusher 5 is vertical, so that the angle of the second inclined plane 6 relative to the vertical is 40-45 degrees, while the arm 2 is required to swing, and the angle of the axis relative to the vertical also changes continuously. The first inclined plane 4 and the second inclined plane 6 have two critical points, namely, the first inclined plane 4 is provided with a point A and a point B, the second inclined plane 6 is initially contacted with the point A, when the inclined plane pushing block 5 gradually descends, the contact point gradually moves towards the point B, when the contact point is the point B, the clamping arm 2 is indicated to rotate in place, and the two clamping heads 3 are inwards closed to the limit position and complete clamping.

Also as shown in fig. 5 and 6, in the present embodiment, the jaw driving assembly includes a transmission shaft 11 and a linear transmission portion 12. Wherein, the first end of transmission shaft 11 is connected with inclined plane ejector pad 5, and sharp drive portion 12 is connected with the second end of transmission shaft 11, and sharp drive portion 12 is connected with sharp actuating mechanism transmission simultaneously.

Therefore, the linear transmission part 12 is driven by the linear driving mechanism to vertically displace, and the inclined surface pushing block 5 is driven by the transmission shaft 11 to vertically displace, so as to control the clamping and opening actions. The purpose of the linear transmission part 12 is to drive all the linear transmission parts 12 through the linear driving mechanism, the connecting piece and the like when a plurality of cover opening devices are arranged at the same time, so that the clamping driving of all the devices can be completed by means of a single linear driving mechanism, and the structural arrangement and control are simplified while the synchronous rate is ensured.

It should be noted that the linear driving mechanism may be an air cylinder, a screw rod, or other types of linear driving mechanisms, which are not particularly limited herein.

Since the device is required to perform the cap screwing operation, the chuck 3 is required to perform the rotation operation after gripping the cap. In this embodiment, the transmission shaft 11 is further connected with a rotation transmission part 13, and the rotation transmission part 13 is simultaneously connected with a rotation driving mechanism in a transmission manner, and drives the rotation transmission shaft 11 to rotate synchronously by driving the rotation transmission part 13 through the rotation driving mechanism.

It will be appreciated that the drive shaft 11 in this embodiment is required to be both axially displaced and telescoped, and therefore takes the form of a splined shaft comprising the rotatable member 14 and the splined inner shaft 15. The rotation transmission part 13 is of a sleeve structure, is sleeved on the rotating member 14 and is fixedly connected with the rotating member 14 through bolts so as to keep synchronous rotation with the rotating member 14. The spline inner shaft 15 and the rotating member 14 are provided with matched key grooves (in the embodiment, the spline inner shaft 15 is square, the rotating member 14 is provided with a square through hole), the spline inner shaft 15 can stretch and retract relative to the rotating member 14, the displacement of the inclined surface pushing block 5 is controlled, and the rotating member 14 and the spline inner shaft 15 are kept in a transmission connection state with a rotation driving mechanism.

The first end of the rotating member 14 is fixed to the jaw seat 1, the first end of the spline inner shaft 15 is fixed to the inclined push block 5, and the second end is fixed to the linear transmission portion 12, so that linear displacement can be smoothly transmitted. And the rotation transmission part 13 can drive the transmission shaft 11, the clamping jaw seat 1, the inclined surface pushing block 5 and the clamping arm 2 to integrally rotate when rotating so as to rotate the cover.

In the present embodiment, the transmission teeth 16 are formed on the outer surface of the rotation transmission portion 13, and therefore the rotation driving mechanism can transmit the rotation transmission portion 13 through the driving teeth. As the preferred embodiment, the cover opening devices can be arranged in a plurality of rows, and the rotary driving mechanism is matched with each transmission tooth 16 through the rack synchronization, so that each cover opening device can be driven to synchronously rotate at one time, the cover opening of a plurality of groups of test tubes is finished, and the operation efficiency is further improved.

In other embodiments, the rotation transmission part 13 may also be driven by a synchronous belt, a synchronous chain, etc., and those skilled in the art can flexibly select according to the actual situation.

In this embodiment, the rotating member 14 of the transmission shaft 11 is rotatably supported by the bearing 17, and the bearing 17 is disposed on the supporting structure of the device, so that the rotation transmission of the whole device is smoother when the cover is screwed, and the service life of the spline shaft is prolonged.

By adopting the uncapping device provided by the embodiment, the device is moved to the position of the test tube cover, the linear driving mechanism drives the inclined surface pushing block 5 to vertically move downwards through the transmission shaft 11, so that the clamping arm 2 rotates around the hinge point, the chuck 3 at the bottom end of the clamping arm 2 folds to clamp the cover, and then the rotary driving mechanism drives the transmission shaft 11 to rotate, so that the clamping jaw seat 1 and the chuck 3 are driven to integrally rotate, and the cover screwing operation is completed.

The uncapping device provided by the embodiment has a simple overall structure, relies on the inclined surface pushing block 5 to directly control the clamping and loosening actions of the chuck 3, simultaneously directly completes the linear and rotary transmission through the transmission shaft 11 and the like, ensures the opening and closing of the chuck 3 and the implementation of the cap screwing action, is more suitable for miniaturized equipment, can flexibly arrange a plurality of caps so as to simultaneously perform a plurality of cap screwing operations, improves the operation efficiency, and reduces the cost of manufacturing, nucleic acid detection and the like.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.

Claims

1. An uncapping device, wherein the uncapping device comprises:

the clamping jaw comprises clamping jaw seats and clamping arms arranged on the clamping jaw seats, wherein the number of the clamping arms is at least 2;

2. The door opening device of claim 1 wherein the jaw seat defines a mounting slot, the second end of the clamp arm being positioned within the mounting slot.

3. The door opening device of claim 1, wherein the jaw housing is provided with a first hinge hole, the clamp arm is provided with a second hinge hole corresponding to the first hinge hole, and the clamp arm is hinged to the jaw housing by a hinge.

4. The door opening device of claim 1 wherein the first ramp of the clamp arm is pressed outwardly by the second ramp as the ramp pusher moves in the first direction to draw the clamp head inwardly to clamp the material, and wherein the clamp head is released as the ramp pusher is reset in the second direction.

5. The door opening device of claim 1 wherein the second ends of the clip arms further include an elastic member therebetween.

6. The door opening device of claim 5 wherein the resilient member is a pull spring.

7. The door opening device of claim 1 wherein the clip arm has a total length of 30-40 mm and the hinge point of the clip arm is 10-13 mm from the second end of the clip arm.

8. The door opening device of claim 7 wherein the first angled surface has an angle of 25-35 degrees with respect to the central axis of the arm and the second angled surface has an angle of 40-45 degrees with respect to the central axis of the angled push block.

9. The door opening device according to claim 1, wherein the transmission shaft is a spline shaft, the rotation transmission part is sleeved on the transmission shaft and rotates synchronously with the transmission shaft, the transmission shaft can stretch and retract relative to the rotation transmission part, and transmission teeth are formed on the outer surface of the rotation transmission part.

10. An opening device according to claim 9, wherein a plurality of the opening devices are arranged in a row, and the rotary drive mechanism is engaged with each of the transmission teeth by rack synchronization.