CN219328743U

CN219328743U - Pinhole jam detection device

Info

Publication number: CN219328743U
Application number: CN202320111776.5U
Authority: CN
Inventors: 杨三八; 别涌
Original assignee: Jumin Biological Technology Co ltd
Current assignee: Jumin Biological Technology Co ltd
Priority date: 2023-01-16
Filing date: 2023-01-16
Publication date: 2023-07-11
Anticipated expiration: 2033-01-16

Abstract

The utility model discloses a pinhole blockage detection device, which comprises: a frame; a vision device disposed on the frame; the point light source illumination device is arranged on the rack and used for illuminating the pinholes; a movement driving device connected with the vision device; an image analysis system coupled to the vision device; and the clamping device is used for fixing the needle tube to be detected. The utility model realizes that 1 vision device can easily detect out the unqualified products of full blockage or half blockage of pinholes, and has the advantages of rapidness, low cost and high production efficiency.

Description

Pinhole jam detection device

Technical Field

The utility model relates to the technical field of self-destruction syringe detection, in particular to a pinhole blockage detection device of a syringe.

Background

Medical instruments, instruments with needle tubes are typically provided with needle holes for passing fluids therethrough to perform the function of delivering fluids. And pinhole blockage may occur during the manufacturing process. The blocked needle tube will certainly render the product unusable. A pressure detection method can be adopted to judge whether the device is blocked or not, but sometimes the pressure detection is too long, and the pressure detection needs the device to be sealed, so that the device has higher requirements. While visual inspection can detect products with blocked pinholes. The production line is required to be provided with a visual detection device to find pinhole blockage defects when the production line cannot be screened one by naked eyes in mass production. At present, no pinhole blockage detection device exists.

Disclosure of Invention

The present utility model is directed to solving the above-mentioned problems and disadvantages of the prior art by providing a pinhole blockage detection device.

The technical problems solved by the utility model can be realized by adopting the following technical scheme:

a pinhole blockage detection device, comprising:

a frame;

a vision device disposed on the frame;

the point light source illumination device is arranged on the rack and used for illuminating the pinholes;

a movement driving device connected with the vision device;

an image analysis system coupled to the vision device;

and the clamping device is used for fixing the needle tube to be detected.

In a preferred embodiment of the utility model, the vision apparatus comprises more than 30 ten thousand pixels of cameras.

In a preferred embodiment of the present utility model, the movement driving means includes an X-axis direction driving means and a Y-axis direction driving means.

In a preferred embodiment of the present utility model, the point light source illumination device is disposed directly below the needle tube to be detected.

In a preferred embodiment of the present utility model, the point light source illumination device includes a laser point light source.

In a preferred embodiment of the utility model, the gripping device is a robotic arm.

By adopting the technical scheme, the utility model realizes that 1 vision device can easily detect the unqualified products of full or half blockage of the pinholes, and has the advantages of rapidness, low cost and high production efficiency.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a pinhole blockage detection device according to an embodiment of the present utility model.

FIG. 2 is one of the detection schematics of one embodiment of the present utility model.

FIG. 3 is a second schematic diagram of an embodiment of the present utility model.

FIG. 4 is a third schematic diagram of an embodiment of the present utility model.

FIG. 5 is a diagram of a detection scheme according to an embodiment of the present utility model.

Detailed Description

The utility model is further described below in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.

Referring to fig. 1, a pinhole blockage detection device includes a frame 100, a vision device 200 disposed on the frame 100, the vision device 200 and a movement driving device 300, the movement driving device 300 includes an X-axis direction driving device and a Y-axis direction driving device, a driving end of the X-axis direction driving device is connected with the vision device, a fixing end of the Y-axis direction driving device is disposed on the frame 100, and a driving end of the Y-axis direction driving device is connected with the fixing end of the X-axis direction driving device, so that the vision device 200 can move along the X-axis direction and the Y-axis direction under the action of the movement driving device 300. The X-axis direction driving means and the Y-axis direction driving means may be cylinders. The vision device 200 includes a camera of 30 ten thousand pixels or more.

The point light source illumination device 400 is disposed on the frame 100 to illuminate the pinhole 11. The point light source illumination device 400 in the present embodiment is disposed directly below the needle tube 10 to be detected, and the point light source illumination device 400 includes a laser point light source. By illuminating the pinhole 11 with the point light source illumination device, the pinhole brightness can be improved, thereby realizing detection, and the device can be adapted to various types of thick and thin needle tubes. The clamping device 500 is a mechanical arm, and is used for fixing the needle tube 10 to be detected, the front end of the needle tube 10 is provided with a needle head, and the tail end is hollow, so that the light of the point light source illumination device 400 irradiates the needle hole 11.

A pinhole blockage detection method, which uses the pinhole blockage detection device, comprises the following steps:

1) With reference to fig. 2, a photo is taken by a visual device through illumination of a point light source illumination device, so that a clear image of a pinhole is obtained, the clear image is displayed in white, and other areas are black backgrounds;

2) With reference to fig. 3, the vision device searches the edge from the direction of the X axis in the middle to obtain the center position X of the pinhole, and then searches the edge from the top to the bottom to obtain the top Y of the pinhole;

3) Referring to FIG. 4, the vision device searches the center O of the circle in the outer circumference of the pinhole according to X and Y, so far, the center position of the pinhole is obtained; preferably, the image analysis system determines an initial position according to the brightness spot of the searching pinhole, and obtains the center position of the pinhole by searching the circle center;

4) Referring to fig. 5, the image analysis system calculates a white area S corresponding to the pinhole according to the image acquired by the vision device;

5) Referring to fig. 5, if S is smaller than the lower limit value, it is determined that the block is full or half, and the block is not qualified; if S is larger than the upper limit value, judging that the pinhole breaks down and is unqualified; and if S is between the upper limit value and the lower limit value, judging that the test paper is qualified.

When the image analysis system judges that the image is full or half, the area of the pinhole is calculated to judge whether the image is full or half. The utility model can perform quantitative analysis more accurately than the pressure method. Because the pressure method cannot detect half-plugging caused by floating objects.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A pinhole blockage detection device, comprising:

a frame;

a vision device disposed on the frame;

a movement driving device connected with the vision device;

an image analysis system coupled to the vision device;

and the clamping device is used for fixing the needle tube to be detected.

2. A pinhole jam detection device as in claim 1 wherein said vision means includes a camera of 30 ten thousand pixels or more.

3. A pinhole jam detection device as in claim 1 wherein said movement drive includes an X-axis direction drive and a Y-axis direction drive.

4. A pinhole block detection device according to claim 1, wherein the point light source illumination device is provided directly below the needle tube to be detected.

5. A pinhole block detection device according to claim 1 or 4, wherein the point light source illumination device includes a laser point light source.

6. A pinhole block detection device according to claim 1, wherein the clamping means is a robotic arm.