CN213050649U - Test tube puncture pressing mechanism - Google Patents
Test tube puncture pressing mechanism Download PDFInfo
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- CN213050649U CN213050649U CN202021693893.XU CN202021693893U CN213050649U CN 213050649 U CN213050649 U CN 213050649U CN 202021693893 U CN202021693893 U CN 202021693893U CN 213050649 U CN213050649 U CN 213050649U
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- puncture needle
- pressing plate
- test tube
- infrared induction
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Abstract
The utility model discloses a test tube puncture pressing mechanism, which comprises a puncture needle module, a pressing plate module and a shell, wherein the puncture needle module and the pressing plate module are respectively installed on the shell in a sliding way, and the puncture needle module is positioned above the pressing plate module; the puncture needle module comprises a puncture needle fixedly arranged on the puncture needle module, a liquid suction channel is arranged in the puncture needle, the pressing plate module comprises a pressing plate fixedly arranged on the pressing plate module, and the puncture needle and the pressing plate are both positioned outside the shell; the pressboard module drives the pressboard and slides downwards in order to suppress the test tube, and the pressboard is seted up in the position that corresponds the pjncture needle and is supplied the puncture needle to pierce through in the test tube. The present case is through pressboard suppression test tube in order to make things convenient for the puncture needle to pull up from the test tube, makes the puncture and pulls up the operation automation, facilitates the use, and it is spacing to redesign infrared induction module and replace general machinery, prevents mechanical wear, extension mechanism life.
Description
Technical Field
The utility model relates to an experimental apparatus technical field, in particular to test tube puncture pressing mechanism.
Background
In order to prevent pollution, the tube opening of the test tube is sealed by a tube cover, and the tube cover is generally made of soft materials, has good air tightness and can be pierced by sharp objects. The puncture needle is used as an ideal tool for puncturing the tube cover of the test tube to achieve the purpose of imbibing, and has wide application in the field of experimental instruments.
However, negative pressure is generated in the test tube after the liquid absorption needle absorbs liquid, so that the puncture needle is often pulled out of the test tube by great strength no matter the needle is pulled out manually or by a machine, and the puncture needle is contacted with the tube cover, so that the difficulty in pulling out the puncture needle is further increased by the frictional resistance between the puncture needle and the tube cover. Therefore, the present inventors have devised, in particular, a mechanism for pulling up the puncture needle from the test tube by pressing the test tube.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a test tube puncture pressing mechanism, degree of automation is high, through the suppression test tube in order to make things convenient for the puncture needle to pull up from the test tube.
To achieve the above object, the solution of the present invention is: a test tube puncture pressing mechanism comprises a puncture needle module, a pressing plate module and a shell, wherein the puncture needle module and the pressing plate module are respectively installed on the shell in a sliding mode, and the puncture needle module is located above the pressing plate module;
the puncture needle module comprises a puncture needle fixedly arranged on the puncture needle module, a liquid suction channel is arranged in the puncture needle, the pressing plate module comprises a pressing plate fixedly arranged on the pressing plate module, and the puncture needle and the pressing plate are both positioned outside the shell;
the pressboard module drives the pressboard and slides downwards in order to suppress the test tube, and the pressboard is seted up in the position that corresponds the pjncture needle and is supplied the puncture needle to pierce through in the test tube.
Further, the shell is provided with an inner cavity, the middle part of the inner cavity is provided with a middle plate, and the middle plate divides the inner cavity into an upper inner cavity and a lower inner cavity;
the puncture needle module further comprises a first nut and a first screw rod stepping motor, the first screw rod stepping motor is vertically arranged in the upper inner cavity, the first nut comprises a first threaded end and a first fixed end, the first threaded end is connected to a rod body of the first screw rod stepping motor in a matched mode, and the first fixed end extends out of the shell and is used for fixing the puncture needle;
the pressboard module still includes second nut and second screw rod step motor, second screw rod step motor is vertical to be set up in lower inner chamber, the second nut includes second thread end and second stiff end, the cooperation of second thread end is connected on second screw rod step motor's shaft, the casing is stretched out to the second stiff end, is used for fixing the pressboard.
Furthermore, a central control board is arranged on the shell and connected with the first screw rod stepping motor and the second screw rod stepping motor, and the vertical stroke of the puncture needle module and the pressing plate module is limited by respectively controlling the rotation strokes of the first screw rod stepping motor and the second screw rod stepping motor.
Further, a top plate is arranged at the top of the upper inner cavity, a bottom plate is arranged at the bottom of the lower inner cavity, a motor head of the first screw stepping motor is fixed on the middle plate, a screw of the first screw stepping motor is connected to the top plate, a motor head of the second screw stepping motor is fixed on the bottom plate, and a screw of the second screw stepping motor is connected to the middle plate.
Further, a central control panel, a first upper limit infrared sensing module and a second upper limit infrared sensing module are arranged on the shell, the first upper limit infrared sensing module is positioned on the top plate above the puncture needle module and senses the puncture needle module, the second upper limit infrared sensing module is positioned on the middle plate above the pressing plate module and senses the pressing plate module, and the central control panel is connected with the first upper limit infrared sensing module, the second upper limit infrared sensing module, the puncture needle module and the pressing plate module;
specific distances are arranged between the first upper limit infrared induction module and the puncture needle module and between the second upper limit infrared induction module and the pressing plate module, and when the puncture needle module slides upwards and is smaller than the specific distances, the central control panel controls the puncture needle module to stop; when the pressing plate module slides upwards and is smaller than a specific distance, the central control board controls the pressing plate module to stop.
Further, a central control panel, a first lower limit infrared sensing module and a second lower limit infrared sensing module are arranged on the shell, the first lower limit infrared sensing module is positioned on the middle plate below the puncture needle module and senses the puncture needle module, the second lower limit infrared sensing module is positioned on the bottom plate below the pressing plate module and senses the pressing plate module, and the central control panel is connected with the first lower limit infrared sensing module, the second lower limit infrared sensing module, the puncture needle module and the pressing plate module;
specific distances are respectively arranged between the first lower limit infrared induction module and the puncture needle module and between the second lower limit infrared induction module and the pressing plate module, and when the puncture needle module slides downwards and is smaller than the specific distances, the central control panel controls the puncture needle module to stop; when the pressing plate module slides downwards and is smaller than a specific distance, the central control board controls the pressing plate module to stop.
Further, the specific distance is at least 5 mm.
After the technical scheme is adopted, the beneficial effects of the utility model reside in that:
the utility model adopts the screw stepping motor as power, obviously improves puncture force and pressing force, and presses the test tube through the pressing plate to facilitate the puncture needle to be pulled out from the test tube, so that the puncture and pulling operation is automatic and convenient to use, and the infrared induction module is redesigned to replace general mechanical limit, thereby preventing mechanical abrasion and prolonging the service life of the mechanism; furthermore, the utility model discloses simple structure still designs there is limit structure from top to bottom, has further improved the degree of automation of this mechanism.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Description of reference numerals:
the puncture needle module 1, the puncture needle 11, the liquid adding channel 111, the first nut 12, the first thread end 121, the first fixed end 122, the first screw rod stepping motor 13, the first upper limit infrared induction module 14, the interface 15, the pressing plate module 2, the pressing plate 21, the through hole 211, the second nut 22, the second thread end 221, the second fixed end 222, the second screw rod stepping motor 23, the second upper limit infrared induction module 24, the shell 3, the upper inner cavity 31, the lower inner cavity 32, the top plate 4, the middle plate 5, the bottom plate 6 and the central control panel 7.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides a test tube puncture pressing mechanism, as shown in figure 1, comprising a puncture needle module 1, a pressing plate module 2, a shell 3, a top plate 4, a middle plate 5 and a bottom plate 6, wherein the shell 3 is provided with an inner cavity, the top plate 4, the middle plate 5 and the bottom plate 6 are sequentially arranged at the top, the middle and the bottom of the inner cavity, and the inner cavity is divided into an upper inner cavity 31 and a lower inner cavity 32;
the puncture needle module 1 is slidably mounted in the upper inner cavity 31, the pressing plate module 2 is slidably mounted in the lower inner cavity 32, and the puncture needle module 1 is located above the pressing plate module 2.
The utility model discloses an degree of automation is higher, and slidable mounting is on casing 3 pjncture needle module 1 and pressboard module 2 all respectively have the spacing design, the utility model discloses have the spacing design of two kinds of modes, specifically as follows:
one is to automatically limit by controlling a screw motor. The central control board 7 is arranged on the shell 3, the central control board 7 is connected with the first screw stepping motor 13 and the second screw stepping motor 23, and the central control board 7 controls the rotation turns of the first screw stepping motor 13 and the second screw stepping motor 23 respectively to control the rotation strokes of the motors, so that the up-and-down sliding strokes of the puncture needle module 1 and the pressing plate module 2 are limited;
another way is to use an infrared sensor to perform automatic limit. The upper limit structure is specifically that a central control board 7, a first upper limit infrared induction module 14 and a second upper limit infrared induction module 24 are arranged on the shell 3, the first upper limit infrared induction module 14 is positioned on the top plate 4 above the puncture needle module 1 and inducts the puncture needle module 1, the second upper limit infrared induction module 24 is positioned on the middle plate 5 above the pressing plate module 2 and inducts the pressing plate module 2, and the central control board 7 is connected with the first upper limit infrared induction module 14, the second upper limit infrared induction module 24, the puncture needle module 1 and the pressing plate module 2;
specific distances are respectively arranged between the first upper limit infrared induction module 14 and the puncture needle module 1 and between the second upper limit infrared induction module 24 and the pressing plate module 2, and when the puncture needle module 1 slides upwards and is smaller than the specific distances, the central control board 7 controls the puncture needle module 1 to stop; when the pressing plate module 2 slides upwards and is smaller than a specific distance, the central control board 7 controls the pressing plate module 2 to stop.
The lower limiting structure can be designed as the upper limiting structure, and specifically, the lower limiting structure is that the shell 3 is provided with a central control board 7, a first lower limiting infrared sensing module and a second lower limiting infrared sensing module, the first lower limiting infrared sensing module is located on the middle plate 5 below the puncture needle module 1 and senses the puncture needle module 1, the second lower limiting infrared sensing module is located on the bottom plate 6 below the pressing plate module 2 and senses the pressing plate module 2, and the central control board 7 is connected with the first lower limiting infrared sensing module, the second lower limiting infrared sensing module, the puncture needle module 1 and the pressing plate module 2;
specific distances are respectively arranged between the first lower limit infrared induction module and the puncture needle module 1 and between the second lower limit infrared induction module and the pressing plate module 2, and when the puncture needle module 1 slides downwards and is smaller than the specific distances, the central control board 7 controls the puncture needle module 1 to stop; when the pressing plate module 2 slides downward and is less than a certain distance, the central control board 7 controls the pressing plate module 2 to stop.
The working process of the embodiment is as follows:
firstly, a test tube to be processed is placed below the pressing plate 21, the second screw stepping motor 23 rotates forwards, the second nut 22 vertically moves downwards along the screw of the second screw stepping motor 23 to drive the pressing plate 21 to press the test tube downwards, and the tube cover of the test tube is located below the through hole 211; then, the first screw stepping motor 13 rotates forward, the first nut 12 moves vertically downward along the screw of the first screw stepping motor 13 to drive the puncture needle 11 to penetrate through the through hole 211 to puncture the tube cover of the test tube, and then the test tube enters the test tube; the interface 15 at the top of the puncture needle 11 is used for being externally connected with a solution bottle with an air pressure device, and liquid can be added or absorbed to the test tube through the liquid adding and absorbing channel 111 of the puncture needle 11; then, after liquid adding or liquid absorbing is finished, the first screw stepping motor 13 rotates reversely, the first nut 12 moves vertically and upwards along the screw of the first screw stepping motor 13 to drive the puncture needle 11 to pull out the test tube until the first upper limit infrared sensing module 14 senses that the puncture needle module 1 is smaller than a specific distance, in one embodiment, the specific distance is designed to be 5mm, and the central control board 7 controls the puncture needle module 1 to stop, so that the upward sliding limit of the puncture needle module 1 is realized; finally, the second screw stepping motor 23 rotates reversely, the second nut 22 vertically moves upwards along the screw of the second screw stepping motor 23 to drive the pressing plate 21 to move upwards, the pressing of the test tube is removed, the specific distance is designed to be 5mm until the second upper limit infrared induction module 24 induces that the pressing plate module 2 is smaller than the specific distance, the central control board 7 controls the pressing plate module 2 to stop, and the upward sliding limit of the pressing plate module 2 is realized; similarly, in this embodiment, the screw motor may be used to perform the lower limit of the downward sliding of the puncture needle module 1 and the pressing plate 21, and certainly, the lower limit may also be performed by setting the lower limit infrared sensing module.
In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first", "second", and the like are used for distinguishing between different objects and not for describing a particular order.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the design of the present application, and all equivalent changes made according to the design key of the present application fall within the protection scope of the present application.
Claims (7)
1. The utility model provides a test tube puncture pressing mechanism which characterized in that: the device comprises a puncture needle module, a pressing plate module and a shell, wherein the puncture needle module and the pressing plate module are respectively arranged on the shell in a sliding manner, and the puncture needle module is positioned above the pressing plate module;
the puncture needle module comprises a puncture needle fixedly arranged on the puncture needle module, a liquid suction channel is arranged in the puncture needle, the pressing plate module comprises a pressing plate fixedly arranged on the pressing plate module, and the puncture needle and the pressing plate are both positioned outside the shell;
the pressboard module drives the pressboard and slides downwards in order to suppress the test tube, and the pressboard is seted up in the position that corresponds the pjncture needle and is supplied the puncture needle to pierce through in the test tube.
2. The test tube piercing press of claim 1, wherein: the shell is provided with an inner cavity, the middle part of the inner cavity is provided with a middle plate, and the middle plate divides the inner cavity into an upper inner cavity and a lower inner cavity;
the puncture needle module further comprises a first nut and a first screw rod stepping motor, the first screw rod stepping motor is vertically arranged in the upper inner cavity, the first nut comprises a first threaded end and a first fixed end, the first threaded end is connected to a rod body of the first screw rod stepping motor in a matched mode, and the first fixed end extends out of the shell and is used for fixing the puncture needle;
the pressboard module still includes second nut and second screw rod step motor, second screw rod step motor is vertical to be set up in lower inner chamber, the second nut includes second thread end and second stiff end, the cooperation of second thread end is connected on second screw rod step motor's shaft, the casing is stretched out to the second stiff end, is used for fixing the pressboard.
3. The test tube piercing press of claim 2, wherein: the central control board is arranged on the shell and connected with the first screw rod stepping motor and the second screw rod stepping motor, and the upper and lower strokes of the puncture needle module and the pressing plate module are limited by respectively controlling the rotation strokes of the first screw rod stepping motor and the second screw rod stepping motor.
4. The test tube piercing press of claim 2, wherein: the top of the upper inner cavity is provided with a top plate, the bottom of the lower inner cavity is provided with a bottom plate, the motor head of the first screw stepping motor is fixed on the middle plate, the screw of the first screw stepping motor is connected on the top plate, the motor head of the second screw stepping motor is fixed on the bottom plate, and the screw of the second screw stepping motor is connected on the middle plate.
5. The test tube piercing press mechanism of claim 4, wherein: the shell is provided with a central control panel, a first upper limit infrared induction module and a second upper limit infrared induction module, the first upper limit infrared induction module is positioned on a top plate above the puncture needle module and induces the puncture needle module, the second upper limit infrared induction module is positioned on a middle plate above the pressing plate module and induces the pressing plate module, and the central control panel is connected with the first upper limit infrared induction module, the second upper limit infrared induction module, the puncture needle module and the pressing plate module;
specific distances are arranged between the first upper limit infrared induction module and the puncture needle module and between the second upper limit infrared induction module and the pressing plate module, and when the puncture needle module slides upwards and is smaller than the specific distances, the central control panel controls the puncture needle module to stop; when the pressing plate module slides upwards and is smaller than a specific distance, the central control board controls the pressing plate module to stop.
6. The test tube piercing press mechanism of claim 4, wherein: the shell is provided with a central control panel, a first lower limit infrared induction module and a second lower limit infrared induction module, the first lower limit infrared induction module is positioned on a middle plate below the puncture needle module and induces the puncture needle module, the second lower limit infrared induction module is positioned on a bottom plate below the pressing plate module and induces the pressing plate module, and the central control panel is connected with the first lower limit infrared induction module, the second lower limit infrared induction module, the puncture needle module and the pressing plate module;
specific distances are respectively arranged between the first lower limit infrared induction module and the puncture needle module and between the second lower limit infrared induction module and the pressing plate module, and when the puncture needle module slides downwards and is smaller than the specific distances, the central control panel controls the puncture needle module to stop; when the pressing plate module slides downwards and is smaller than a specific distance, the central control board controls the pressing plate module to stop.
7. A test tube piercing press as claimed in any one of claims 5 to 6, wherein: the specific distance is at least 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021693893.XU CN213050649U (en) | 2020-08-14 | 2020-08-14 | Test tube puncture pressing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021693893.XU CN213050649U (en) | 2020-08-14 | 2020-08-14 | Test tube puncture pressing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213050649U true CN213050649U (en) | 2021-04-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021693893.XU Active CN213050649U (en) | 2020-08-14 | 2020-08-14 | Test tube puncture pressing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213050649U (en) |
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2020
- 2020-08-14 CN CN202021693893.XU patent/CN213050649U/en active Active
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