Automatic feeding device for needle type filter

Abstract

The utility model provides an automatic feeding device for a needle filter, which comprises a turntable, a feeding mechanism and a feeding mechanism, the first driving device is in transmission connection with the turntable; the charging barrel is mounted on the turntable, and a needle type filter string is placed in the charging barrel; the second driving device is fixedly mounted on the base plate; a through hole is formed in the bottom of the charging barrel, one end of the ejector rod is connected with the second driving device, the other end of the ejector rod enters the charging barrel through the through hole and then makes contact with the needle type filter, and the second driving device is used for driving the ejector rod to move up and down along the central axis of the charging barrel; and the clamping jaw is arranged above the charging barrel and is used for sequentially clamping out a plurality of needle filters in the needle filter string in the charging barrel. When the needle type filters are fed, the ejector rod moves up and down to jack up the needle type filter string in the charging barrel, the uppermost needle type filter is clamped by a clamping jaw in the grabbing module, automatic feeding of the needle type filters is completed, the whole process is high in automation process, and the whole working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to an automatic feeding device for a needle filter. Background Art

[0002] The needle filter is a common filter device, which is mainly used for filtering and separating the mobile phase and samples in chromatographic analysis. It is a long and thin tube filled with tiny holes or fibers. When the fluid passes through, it can filter out pollutants and larger particles, thereby achieving a filtering effect. At the same time, it has a good effect on protecting the chromatographic column, infusion tube system and injection valve from contamination. It is also a filtering process that the sample must go through before being loaded into the chromatographic bottle.

[0003] However, in traditional situations, the use of syringe filters has a low degree of automation and has many disadvantages: first, loading requires manual repeated connection of the syringe filter to the fluid pipeline, and the process takes a lot of time and human resources; second, the loading of the syringe filter requires experienced staff to operate, and improper operation may cause equipment damage or fluid leakage; in addition, manual installation also has certain safety risks. For example, if corrosive liquids are encountered, there will be installation risks. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide an automatic loading device for needle filters. The push rod in the loading module is driven up and down by a second driving device to lift the needle filter string placed in the barrel in the storage module. The needle filter located at the top is clamped by the clamping claw in the grabbing module, completing the automatic loading of the needle filter for assembly of the material taking syringe. The above whole process is highly automated, thereby improving the overall work efficiency.

[0005] The utility model provides an automatic feeding device for a needle filter, comprising: a material storage module, a feeding module, a grabbing module and a base plate, wherein:

[0006] The storage module comprises:

[0007] A turntable, the turntable is rotatably mounted on the base plate;

[0008] A first driving device, the first driving device is drivingly connected to the turntable, and the first driving device is used to drive the turntable to rotate around its central axis;

[0009] A barrel, the barrel is mounted on the turntable, a needle filter string is placed in the barrel, and the needle filter string includes a plurality of needle filters stacked in sequence from top to bottom along the axial direction of the barrel and placed in the barrel;

[0010] The feeding module comprises:

[0011] a second driving device, the second driving device being fixedly mounted on the base plate;

[0012] A push rod, wherein a through hole is provided at the bottom of the barrel, one end of the push rod is connected to the second driving device, and the other end of the push rod enters the barrel through the through hole and contacts the needle filter, and the second driving device is used to drive the push rod to move up and down along the central axis of the barrel;

[0013] The capture module comprises:

[0014] A clamping jaw is arranged above the barrel and is used to clamp out the plurality of needle filters in the needle filter string in the barrel in sequence.

[0015] In one embodiment, the clamp has a groove for clamping the needle filter, and the bottom surface of the groove is connected to a groove slope. The needle filter clamped in the needle filter string is acted upon by the top of the groove slope and is stuck in the groove. The bottom surface of the clamp is against a needle filter located below and adjacent to the clamped needle filter.

[0016] In one embodiment, the first driving device is a first stepper motor.

[0017] In one embodiment, a plurality of the material barrels are provided, and the plurality of material barrels are evenly arranged on the turntable along the circumference of the turntable.

[0018] In one embodiment, the central axis of the barrel coincides with the axis of the ejector pin.

[0019] In one embodiment, the second driving device comprises:

[0020] a second stepper motor, wherein the second stepper motor is mounted on the substrate;

[0021] A screw rod, one end of which is drivingly connected to the second stepping motor, the other end of which is rotatably connected to a lifting platform, and the other end of the push rod is fixedly connected to the lifting platform.

[0022] In one embodiment, the gripping module further comprises a sensor, which is mounted on the bottom surface of the clamping jaw to monitor the number of the needle filters remaining in the barrel.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] In the automatic loading device for needle filters provided by the utility model, a push rod in the loading module is driven by a second driving device to move up and down, and is used to lift up a string of needle filters placed in a barrel in a storage module, and the needle filter located at the top is clamped by a clamp in a grabbing module, thereby completing the automatic loading of the needle filter for assembly of the material taking syringe. The above-mentioned whole process is highly automated, thereby improving the overall work efficiency. In addition, the use of the device does not require manual operation by an operator, thereby reducing the risk of human operation and the risk of injury from corrosive liquids. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0026] Figure 1 A schematic diagram of the structure of the automatic feeding device for needle filters provided in an embodiment of the utility model;

[0027] Figure 2 A schematic diagram of the structure of the clamping jaws in the automatic feeding device for needle filters provided in an embodiment of the utility model;

[0028] Figure 3 An execution flow chart of the automatic needle filter feeding device provided by the embodiment of the utility model;

[0029] In the figure: 1-gripper; 2-barrel; 3-needle filter; 4-second stepper motor; 5-turntable; 6-base plate; 7-screw rod; 8-first stepper motor; 9-elevator; 10-lifting platform; 11-groove slope; 12-bottom surface of the gripper; 13-sensor. DETAILED DESCRIPTION

[0030] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the utility model. These all belong to the protection scope of the utility model.

[0031] Example

[0032] Reference Figure 1 and Figure 2 As shown, the automatic needle filter feeding device provided in this embodiment includes: a storage module, a feeding module, a grabbing module and a base plate 6, wherein:

[0033] The material storage module includes a turntable 5, a first driving device and a barrel 2. The turntable 5 is rotatably mounted on a base plate 6. The first driving device is in transmission connection with the turntable 5. The first driving device is used to drive the turntable 5 to rotate around its central axis. In this embodiment, the first driving device is a first stepper motor 8. It should be noted that in addition to the first stepper motor 8, other existing driving devices that can drive the turntable 5 to rotate around its own axis can also be used in the present utility model. The barrel 2 is mounted on the turntable 5. A through hole is provided at the bottom of the barrel 2. A needle filter string is placed in the barrel 2. The needle filter string includes a plurality of needle filters 3 that are stacked in sequence from top to bottom along the axial direction of the barrel 2 and placed in the barrel 2.

[0034] The loading module includes a second driving device and a push rod 9, and the second driving device is fixedly mounted on the base plate 6; one end of the push rod 9 is connected to the second driving device, and the other end of the push rod 9 passes through the through hole at the bottom of the barrel 2 and enters the barrel 2, and contacts the needle filter 3 located at the bottom of the needle filter string in the barrel. The second driving device is used to drive the push rod 9 to move up and down along the central axis of the barrel 2, so that the needle filter located at the top of the needle filter string is pushed out to the top of the barrel 2 by the push rod 9, and the axis of the push rod 9 coincides with the central axis of the barrel 2, so that the entire needle filter string rises smoothly;

[0035] The gripping module includes a clamping jaw 1, which is arranged above the barrel 2. The clamping jaw 1 can sequentially clamp out multiple needle filters 3 in the needle filter string in the barrel 2. The clamping jaw 1 includes two clamping elements, and the clamping jaw 1 has a clamping state and an opening state. Under the drive of an external force, the two clamping elements switch between the clamping state and the opening state; in the opening state, the two clamping elements are opened to each other so that the needle filter is located between the two clamping elements. In the clamping state, the relative distance between the two clamping elements becomes smaller, and the needle filter can be clamped between the two clamping elements.

[0036] Reference Figure 2 As shown, in this embodiment, the clamping jaw 1 has a groove for clamping the needle filter 3, and the bottom surface of the groove is connected to the groove slope 11. When the entire needle filter string is lifted by the push rod 9, the top needle filter 3 can be smoothly lifted into the groove by the groove slope 11, and then firmly clamped by the clamping jaw 1. At this time, the adjacent needle filter 3 is fixed by the bottom surface 12 of the clamping jaw to stabilize the entire needle filter string; a sensor 13 is also installed under the clamping jaw 1 to detect whether the needle filter string in the barrel 2 is exhausted.

[0037] Reference Figure 1As shown, in this embodiment, the second driving device includes a second stepper motor 4 and a screw rod 7, wherein: the second stepper motor 4 is mounted on a substrate 6; one end of the screw rod 7 is transmission-connected to the second stepper motor 4, the other end of the screw rod 7 is transmission-connected to a lifting platform 10, and the other end of the push rod 9 is fixedly connected to the lifting platform 10; the second stepper motor 4 drives the screw rod 7 to rotate to push the lifting platform 10 to move up and down, and when the lifting platform 10 moves up and down, the push rod 9 fixedly connected to the lifting platform 10 moves up and down together, thereby completing the process of ejecting the needle filter 3 upward.

[0038] In this embodiment, there are eight barrels 2 , which are evenly arranged on the turntable 5 . It should be noted that those skilled in the art can adjust the number of barrels 2 according to their needs.

[0039] The specific operation process of the automatic feeding device for needle filters in the utility model is as follows: the turntable 5 is positioned to the barrel 2 to be loaded, and the first stepper motor 8 rotates the turntable 5 to turn the barrel 2 to the working position; the second stepper motor 4 drives the lead screw to rotate and lifts the lifting platform 10 upward, and a push rod 9 is fixedly installed on the lifting platform 10. The push rod 9 can pass through the through hole at the bottom of the barrel 2 and lift the needle filter string in the barrel 2 to a certain height, and stop after passing the sensor 13. At this time, the top needle filter 3 of the needle filter string is located in the groove of the clamp 1; the needle filter string is fixed by the bottom surface 12 of the clamp, and the top needle filter 3 is pushed by the inclined surface 11 of the groove to realize the needle filter. The needle filter 3 is separated from the string and enters the groove, and is then clamped by the clamp 1; the clamp 1 fixes the needle filter 3 for loading; when there is only one needle filter 3 stored in the barrel 2, the push rod 9 pushes the needle filter 3 to the groove slope 11, and the sensor 13 will not detect the needle filter 3. At this time, the push rod 9 is driven to descend by the screw and the lifting platform 10. After the push rod 9 is completely separated from the barrel 2, the turntable 5 rotates a certain angle, turns the next barrel 2 to the working position, and continues the loading operation; when it is detected that all the needle filter strings in all barrels 2 are used up, the device will communicate the empty material alarm information to the upper computer. After the upper computer receives the empty material alarm information, it will make an empty material alarm prompt on the human-computer interaction interface.

[0040] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

Claims

1. An automatic needle filter feeding device, characterized in that: include: A storage module, a loading module, a gripping module and a base plate, wherein: The storage module comprises: A turntable, the turntable is rotatably mounted on the base plate; A first driving device, the first driving device is drivingly connected to the turntable, and the first driving device is used to drive the turntable to rotate around its central axis; A barrel, the barrel is mounted on the turntable, a needle filter string is placed in the barrel, and the needle filter string includes a plurality of needle filters stacked in sequence from top to bottom along the axial direction of the barrel and placed in the barrel; The feeding module comprises: a second driving device, the second driving device being fixedly mounted on the base plate; A push rod, wherein a through hole is provided at the bottom of the barrel, one end of the push rod is connected to the second driving device, and the other end of the push rod enters the barrel through the through hole and contacts the needle filter, and the second driving device is used to drive the push rod to move up and down along the central axis of the barrel; The capture module comprises: A clamping jaw is arranged above the barrel and is used to clamp out the plurality of needle filters in the needle filter string in the barrel in sequence.

2. The automatic needle filter feeding device according to claim 1, characterized in that: The clamp has a groove for clamping the needle filter, and the bottom surface of the groove is connected to a groove slope. The needle filter clamped in the needle filter string is acted upon by the top of the groove slope and is clamped in the groove. The bottom surface of the clamp abuts against a needle filter located below and adjacent to the clamped needle filter.

3. The automatic needle filter feeding device according to claim 1, characterized in that: The first driving device is a first stepper motor.

4. The automatic needle filter feeding device according to claim 1, characterized in that: There are multiple barrels, and the multiple barrels are evenly arranged on the turntable along the circumference of the turntable.

5. The automatic needle filter feeding device according to claim 4, characterized in that: The central axis of the barrel coincides with the axis of the ejector rod.

6. The automatic needle filter feeding device according to claim 1, characterized in that: The second driving device comprises: a second stepper motor, wherein the second stepper motor is mounted on the substrate; A screw rod, one end of which is drivingly connected to the second stepping motor, the other end of which is rotatably connected to a lifting platform, and the other end of the push rod is fixedly connected to the lifting platform.

7. The automatic needle filter feeding device according to claim 1, characterized in that: The gripping module further comprises a sensor, which is mounted on the bottom surface of the clamping jaw to monitor the number of the needle filters remaining in the barrel.

Images