CN218940917U

CN218940917U - Driving unit

Info

Publication number: CN218940917U
Application number: CN202222468507.2U
Authority: CN
Inventors: 付略; 赵宇; 洪昌杰; 史智博
Original assignee: Shanghai 3D Medicines Co Ltd
Current assignee: Shanghai 3D Medicines Co Ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-04-28
Anticipated expiration: 2032-09-16

Abstract

An embodiment of the present application provides a driving unit including: a base plate, wherein the surface of the base plate is divided into an X direction and a Y direction which are mutually perpendicular; the support frame is arranged on the bottom plate and comprises two support plates which are oppositely arranged on the surface of the bottom plate and are perpendicular to the bottom plate, and a transverse plate which is connected with the two support plates in the X direction; the first linear motor is arranged on one transverse plate of the support frame and far away from the bottom plate, and comprises at least two first motor sliding blocks which move in the X direction, and the moving track is parallel to the surface of the bottom plate; the number of the second linear motors is at least two, and one ends of the second linear motors are arranged on the first motor sliding blocks and are matched with each other; the second linear motor comprises a second motor slider which moves in the Y direction. According to the embodiment of the application, the linear motor is used, so that the mechanical precision, the reliability and the stability can be improved, the volume is reduced, the working efficiency of instrument equipment is effectively improved, and a large number of samples are more favorably processed.

Description

Driving unit

Technical Field

The embodiment of the application relates to the field of machinery, in particular to a driving unit.

Background

The nucleic acid detection requires pretreatment of the sample, i.e., opening and closing of the sampling tube, adding reagents and sample to the deep-well plate. Wherein the sampling tube is opened and closed, and the reagent and sample pipetting operations are driven by two sets of X/Y/Z motion modules.

The driving unit of the similar instrument products existing in the market at present realizes module driving through a stepping motor and a synchronous belt. Although the stepping motor and the synchronous belt drive have low technical requirements and low cost, the stepping motor and the synchronous belt drive are popular in the domestic market for low-cost middle-low-end products. But comprehensive use effect, unstable stepper motor and synchronous belt drive technique, slow speed, large noise, low equipment production efficiency, short service life, especially when large-scale detection demand appears, sample detection efficiency is very important.

Therefore, how to ensure the cover opening and closing of the sampling tube for the sample, and to improve the working efficiency of the device and the detection efficiency of the sample under the function of adding reagent and sample to the deep hole plate, is a technical problem to be solved by the person skilled in the art.

Disclosure of Invention

The technical problem that this application embodiment solved is how to improve equipment work efficiency, improves sample detection efficiency.

To solve the above-mentioned problems, an embodiment of the present application provides a driving unit, including:

a base plate divided into an X direction and a Y direction on a surface of the base plate, wherein the Y direction is perpendicular to the X direction;

the support frame is arranged on the bottom plate and comprises two support plates which are oppositely arranged on the surface of the bottom plate and are vertically connected with the surface of the bottom plate, and a transverse plate which is connected with the two support plates in the X direction and is opposite to each other;

the first linear motor is arranged on one transverse plate of the support frame and far away from the bottom plate, the first linear motor comprises at least two first motor sliding blocks, the first motor sliding blocks move in the X direction, and the moving track of the first motor sliding blocks is parallel to the surface of the bottom plate;

the number of the second linear motors is at least two, and one end of the second linear motors is arranged on the first motor sliding block and is matched with the first motor sliding block; the second linear motor comprises a second motor sliding block, the second motor sliding block moves in the Y direction, and a plane formed by more than two second motor sliding block moving tracks is parallel to the surface of the bottom plate.

Optionally, the first linear motor includes a first motor guide member, and is disposed along the X direction and matched with the first slider guide member of the first motor slider;

the second linear motor comprises a second motor guide piece, and the second linear motor guide piece is arranged along the Y direction and matched with a second sliding block guide piece of the second motor sliding block.

Optionally, the first linear motor includes a stroke limit signal module, which is respectively disposed at two ends of the first motor guide member and two ends of the first motor slider;

the second linear motor comprises a stroke limiting signal module which is arranged at two ends of the second motor guide piece and two ends of the second motor sliding block.

Optionally, the travel limit signal module includes an optocoupler sensor and an induction piece, and the induction piece is matched with the optocoupler sensor.

Optionally, the first linear motor and the second linear motor include:

at least three grating scales respectively arranged in the first motor guide piece along the X direction; or in the second motor guide along the Y direction;

at least three encoders are respectively arranged on the surfaces of the first motor sliding block and the second motor sliding block, the encoders are matched with the grating ruler, and a receiving device of each encoder points to the grating ruler.

Optionally, the first linear motor and the second linear motor further include:

the stator magnets are respectively arranged in the first motor guide piece along the X direction and are arranged on one side of the grating ruler, which is far away from the first motor sliding block; the grating ruler is arranged in the second motor guide piece along the Y direction and is far away from one side of the second motor sliding block;

and the rotor coils are respectively arranged in the first motor sliding block and the second motor sliding block and are matched with the stator magnets.

Optionally, the driving unit further includes:

the opening/closing cover module is arranged on a second motor sliding block of the second linear motor; the method comprises the steps of,

and the pipetting module is arranged on a second motor sliding block of the other second linear motor.

Compared with the prior art, the technical scheme of the embodiment of the application has the following advantages:

the driving unit provided by the embodiment of the application comprises: a base plate divided into an X direction and a Y direction on a surface of the base plate, wherein the Y direction is perpendicular to the X direction; the support frame is arranged on the bottom plate and comprises two support plates which are oppositely arranged on the surface of the bottom plate and are vertically connected with the surface of the bottom plate, and a transverse plate which is connected with the two support plates in the X direction and is opposite to each other; the first linear motor is arranged on one transverse plate of the support frame and far away from the bottom plate, the first linear motor comprises first motor sliding blocks, the first motor sliding blocks move in the X direction, the number of the first motor sliding blocks is at least 2, and the moving track is parallel to the surface of the bottom plate; the number of the second linear motors is at least 2, and one end of the second linear motors is arranged on the first motor sliding block and is matched with the first motor sliding block; the second linear motor comprises a second motor sliding block, and the sliding block of the second motor moves in the Y direction. Like this, the drive unit that this application embodiment provided, when needs handling the detection sample, the operation is more steady, and efficiency is higher. It can be seen that, on the basis of guaranteeing the processing function of the detection sample, the driving unit provided by the embodiment of the application changes the stepping motor into a linear motor, so that the mechanical precision, the reliability and the stability can be improved, the volume is reduced, the working efficiency of instrument equipment is effectively improved, and the pretreatment of samples like nucleic acid detection in a large batch is more facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.

Fig. 1 is a schematic structural diagram of a driving unit according to an embodiment of the present utility model;

FIG. 2 is a top view of a drive unit according to an embodiment of the present utility model;

fig. 3 is a rear view showing a first partial structure of a driving unit provided in an embodiment of the present utility model;

fig. 4 is a front view showing a first partial structure of a driving unit provided in an embodiment of the present utility model;

fig. 5 is a left side view showing a first partial structure of a driving unit provided in an embodiment of the present utility model;

fig. 6 is a front view showing a second partial structure of the driving unit provided by the embodiment of the present utility model;

fig. 7 is a left side view showing a second partial structure of the driving unit provided by the embodiment of the present utility model;

FIG. 8 is a top view of a second part of the structure of the driving unit according to the embodiment of the present utility model;

fig. 9 is a schematic diagram of a second part of a driving unit according to an embodiment of the present utility model.

Detailed Description

The prior art shows that the existing driving unit has low speed, high noise, low production efficiency of equipment and short service life.

To improve sample detection efficiency, improve mechanical precision, reliability and stability, the present application example provides a drive unit, including:

Like this, the drive unit that this application embodiment provided will replace step motor with linear electric motor when the instrument operation, linear electric motor simple structure, the volume is littleer, operates steadily, and frictional force is little, and the noise is little, and acceleration is big, and the precision is high, and then can improve drive unit's mechanical precision, reliability and stability, improvement operating efficiency reduces the volume.

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that, the direction or the positional relationship referred to in the present specification is based on the direction or the positional relationship shown in the drawings, which are merely for convenience of description and simplification of description, and not to indicate or imply that the apparatus referred to must have a specific direction, and is configured in a specific direction, and thus should not be construed as limiting the present application.

Referring to fig. 1, 3 and 6, fig. 1 is a schematic structural diagram of a driving unit according to an embodiment of the utility model.

As shown in the drawings, the driving unit provided in the embodiment of the present application includes:

a base plate 2 divided into an X direction and a Y direction on the surface of the base plate, wherein the Y direction is perpendicular to the X direction;

a supporting frame 1, which is disposed on the base plate 2, and includes two supporting plates 11 which are disposed opposite to the base plate surface and are vertically connected to the base plate surface, and a transverse plate 12 which is connected to the two supporting plates in the X direction and is opposite to each other;

the first linear motor 3 is arranged on one transverse plate 12 of the support frame 1 and is far away from the bottom plate 2, wherein the first linear motor 3 comprises at least two first motor sliding blocks 31, the first motor sliding blocks 31 move in the X direction, and the moving track of the first motor sliding blocks 31 is parallel to the surface of the bottom plate;

the number of the second linear motors 4 is at least two, and one end of the second linear motors is arranged on the first motor sliding block 31 and is matched with the first motor sliding block 31; the second linear motor 4 comprises a second motor slider 41, the second motor slider 41 moves in the Y direction, and a plane formed by the moving tracks of more than two second motor sliders 41 is parallel to the surface of the bottom plate.

As shown in the figure, the base plate 2 may support other components of the drive unit, including a support frame 1 for a grid tray for holding reagents and samples to be tested.

It is to be understood that "matching with the first motor blocks 31" as used herein means that each first motor block 31 is provided with a second linear motor 4.

As shown in the figure, two support plates 11 are vertically erected on the base plate 2, two transverse plates 12 are connected to the two support plates 11 and are arranged along the X direction, and the transverse plates 12 are provided with holes for facilitating the installation of the first linear motor 3. The first linear motor 3 is arranged on one of the transverse plates 12, the first linear motor 3 is provided with a plurality of first motor sliding blocks 31, and the moving track of the sliding blocks is parallel to the bottom plate 2. One end of the second linear motor 4 is arranged on the first motor sliding block 31, the other end of the second linear motor 4 is connected with the transverse plate 12 far away from the first linear motor 3, the second linear motor 4 can move along the X direction under the drive of the first motor sliding block 31, one end on the transverse plate 12 can also move, the second linear motor 4 is provided with a second motor sliding block 41 which moves along the Y direction, and the movement directions of the second motor sliding blocks 41 of a plurality of the second linear motors 4 are positioned on the same plane.

Of course, in order to facilitate the movement of the first motor slider 31 on the first linear motor 3 and the movement of the second motor slider 41 on the second linear motor 4, in a specific embodiment, the first linear motor 3 of the driving unit provided herein includes a first motor guide 34, arranged along the X-direction, matching with a first slider guide (not shown) of the first motor slider 31; the second linear motor 4 includes a second motor guide 43 disposed in the Y direction to be matched with a second slider guide (not shown) of the second motor slider 41.

Specifically, as shown in fig. 3, in this embodiment, the first motor guide 34 may be a sliding rail, and correspondingly, the first slider guide (not shown) may be a sliding slot, which are matched with each other; of course, in other embodiments, the first motor guide 34 may be a chute, and the first slider guide (not shown) may be a slide rail. Similarly, the second motor guide 43 may be a sliding rail as shown in fig. 6, and correspondingly, the second slider guide (not shown) may be a sliding slot, and the two are matched with each other; of course, in other embodiments, the second motor guide 43 may be a chute, and the second slider guide (not shown) may be a slide rail.

It is easy to understand that the sliding rail is a ridge made of metal or other materials, and can bear, fix, guide and reduce the friction of the moving device or equipment, and the ridge on the surface of the sliding rail is used for guiding, fixing machine parts, special equipment, instruments and the like, and is matched with the sliding groove to reduce the friction force and noise between the tailstock 7 and the chassis 2 when moving, thereby reducing the power consumption and improving the accuracy.

It can be seen that by providing the first linear motor 3 with the first motor guide 34, providing the first motor slide 31 with the first slide guide matching the first motor guide 34, providing the second linear motor 4 with the second motor guide 43, and providing the second linear motor 41 with the second slide guide matching the second motor guide 43, the movement of the first motor slide 31 and the second motor slide 41 can be conveniently realized, the power consumption can be reduced, and the friction and noise can be reduced

To protect the first linear motor 3 and the second linear motor 4 from collision between the plurality of first motor sliders 31 or collision with both ends of the first motor guide 34, and collision between the second motor sliders 41 and both ends of the second motor guide 43, as shown in fig. 3 to 9, the first linear motor 3 includes stroke limit signal modules (not shown) respectively provided at both ends of the first motor guide 34 and both ends of the first motor slider 31; the second linear motor 4 includes a stroke limit signal module (not shown) disposed at both ends of the second motor guide 43 and both ends of the second motor slider 41.

Further, to achieve a better limit effect, the travel limit signal module (not shown) includes

optocoupler sensors

32 and 44 and

sensing pieces

32 and 44, where the

sensing pieces

32 and 44 are matched with the

optocoupler sensors

32 and 44.

It is easy to understand that "the sensing piece matches with the optocoupler sensor" herein means that the sensing piece and the optocoupler sensor are arranged in pairs, and each optocoupler sensor is provided with one sensing piece to co-act with the sensing piece, so as to realize a limiting function, any single optocoupler sensor or sensing piece cannot realize a limiting function, and when the optocoupler sensor is installed, the sensing surface faces the sensing piece.

As shown in fig. 3 and 5, the optocoupler sensors 32 are disposed at two ends of the first motor guide 34, the left end of the left first motor slider 31 and the right end of the right first motor slider 31 are provided with sensing pieces 33, the optocoupler sensors 32 at the left end of the first motor guide 34 and the sensing pieces 33 at the left end of the left first motor slider 31 are matched with each other, the first motor slider 31 at the left side is prevented from colliding with the first motor guide 34, the optocoupler sensors 32 at the right end of the first motor guide 34 and the sensing pieces 33 at the right end of the right first motor slider 31 are matched with each other, and the first motor slider 31 at the right side is prevented from colliding with the first motor guide 34; the right end of the left first motor sliding block 31 is provided with an induction piece 33 which is matched with the optocoupler sensor 32 at the left end of the right first motor sliding block 31 to prevent the two first motor sliding blocks 31 from collision; the optocoupler sensor 32 and the sensing piece 33 matched with the optocoupler sensor are interchangeable in installation position.

As shown in fig. 7 and 8, the optical coupler sensors 44 are disposed at both ends of the second motor guide 43, and the second motor slider 41 is provided with the sensing piece 45; the optocoupler sensor 44 at the left end of the second motor guide 43 is matched with the sensing piece 45 at the left end of the second motor slider 41, so that the second motor slider 41 is prevented from colliding with the second motor guide 43; the optocoupler sensor 44 at the right end of the second motor guide 43 is matched with the sensing piece 45 at the right end of the second motor slider 41, so as to prevent the second motor slider 41 from colliding with the second motor guide 43; the optical coupler sensor 44 and the sensing piece 45 matched with the optical coupler sensor are interchangeable in mounting position.

Further, in order to precisely control the position of the first motor slider 31 and the position of the second motor slider 41, in one embodiment, as shown in fig. 2, the first linear motor 3 and the second linear motor 4 include:

at least three grating scales 7 respectively arranged in the first motor guide 34 along the X direction; or in the second motor guide 43 in the Y direction;

at least three encoders (not shown) are respectively disposed on the surfaces of the first motor slider 31 and the second motor slider 41, the encoders (not shown) are matched with the grating scale 7, and the receiving device of the encoder (not shown) is directed to the grating scale 7.

As shown in the figure, the grating scale 7 on the first motor is matched with the encoder (not shown) on the first motor sliding block 31, so that the first motor sliding block 31 is accurately positioned; the grating ruler 7 on the second motor is matched with the encoder (not shown) on the second motor sliding block 41, so that the second motor sliding block 41 is accurately positioned.

In particular, since the number of the first motor sliders 31 is at least two, the grating scale 7 on the first linear motor 3 can be matched with more than one encoder (not shown).

To ensure efficient and accurate movement of the first and

second motor sliders

31, 41, in one embodiment, as shown in fig. 4 to 7, the first and second

linear motors

3, 4 further include:

stator magnets 42 respectively disposed in the first motor guide 34 in the X direction and on a side of the grating scale 7 away from the first motor slider 31; is arranged in the second motor guide 43 along the Y direction, and the grating ruler 7 is far away from one side of the second motor sliding block 41;

mover coils 35 and 46 are provided in the first motor slider 31 and the second motor slider 41, respectively, and are matched with the stator magnet 42.

As shown in fig. 4 and 5, the mover coil 35 is disposed in the first motor slider 31, the stator magnet 42 is disposed on a side of the grating scale 7 away from the first motor slider 31, and the two are matched with each other, and when the driving unit operates, the mover coil 35 is energized to drive the first motor slider 31 to move.

As shown in fig. 6 and 7, the mover coil 46 is disposed in the second motor slider 41, the stator magnet 42 is disposed on a side of the grating scale 7 away from the second motor slider 41, and the two are matched with each other, and when the driving unit operates, the mover coil 46 is energized to drive the second motor slider 41 to move.

To achieve the processing of the reagent to be detected by the drive unit, in a specific embodiment, as shown in fig. 1, the drive unit further comprises:

an opening/closing cover module 5 provided to a second motor slider 41 of the second linear motor 4; the method comprises the steps of,

the pipetting module 6 is disposed on a second motor slider 41 of the other second linear motor 4.

Although the embodiments of the present application are disclosed above, the present application is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model shall be defined by the appended claims.

Claims

1. A drive unit, comprising:

2. The drive unit of claim 1, wherein the first linear motor includes a first motor guide disposed along the X-direction to mate with a first slider guide of the first motor slider;

the second linear motor comprises a second motor guide piece, and the second linear motor guide piece is arranged along the Y direction and matched with a second slider guide piece of the second motor slider.

3. The drive unit of claim 2, wherein the first linear motor includes a stroke limit signal module disposed at both ends of the first motor guide and at both ends of the first motor slider, respectively;

4. A drive unit as claimed in claim 3, wherein the travel limit signal module comprises an optocoupler sensor and a sensor tab, the sensor tab being matched to the optocoupler sensor.

5. The drive unit of claim 2, wherein the first linear motor and the second linear motor comprise:

6. The drive unit of claim 5, wherein the first and second linear motors further comprise:

the stator magnets are respectively arranged in the first motor guide piece along the X direction and are arranged on one side of the grating ruler, which is far away from the first motor sliding block; the grating ruler is arranged in the second motor guide piece along the Y direction and is arranged on one side of the grating ruler, which is far away from the second motor sliding block;

7. The drive unit of claim 1, comprising: