CN107702622A - Injection needle dedicated gauge - Google Patents

Abstract

The special gauge for injection needles is a cylindrical structure. There are a number of vertically arranged and parallel slots along the outer surface of the cylinder, and a number of horizontally arranged and parallel scale slots are arranged in the slot. The present invention adopts the vertical card slot arranged on the cylinder body, so that the needle seat is clamped outside the card slot, the needle head is clamped in the card slot, and the detection range is determined by the upper and lower long sides of the scale groove opened on the card slot , so that the visual observation method is used instead of numerical reading, which is conducive to simplifying the detection operation steps, reducing the difficulty of detection operation, and improving detection efficiency and detection accuracy.

Description

Special gauges for injection needles

technical field

The invention relates to the technical field of injection needle quality detection, in particular to a special gauge for injection needles.

Background technique

Before the syringe needle is put into the next process for assembly and production, its length and other indicators need to be tested. Existing detection operations mostly use vernier calipers, but due to the obstruction of the measuring end of the caliper by the needle seat, the vernier caliper cannot touch the needle head, but can only measure parallel to the head. Therefore, the accuracy of measurement depends on the parallelism determined by the operator, and subjective factors are more influential. Large, poor data repeatability, and low detection efficiency.

Contents of the invention

The invention provides a special gauge for injection needles to solve the above-mentioned deficiencies in the prior art. The vertical card slot arranged on the cylinder is used to make the needle seat clamped outside the card slot and the needle head clamped in the card slot, and the detection range is determined by the upper and lower long sides of the scale groove opened on the card slot, so that The use of intuitive observation instead of numerical reading is conducive to simplifying the detection operation steps, reducing the difficulty of detection operation, and improving detection efficiency and detection accuracy.

In order to realize the purpose of the present invention, it is proposed to adopt the following technologies:

The special gauge for injection needles is characterized in that it includes a cylinder, several slots and scale slots, the bottom surface of the cylinder is perpendicular to the outer surface of the cylinder, and each of the slots is perpendicular to the end surface and parallel to the On the outer surface of the cylinder, a number of scale grooves arranged horizontally and parallel to each other are provided at the slot.

Further, the cylinder is made of hard metal.

Further, the card slot is a semi-cylindrical slot body.

Further, the opening of the scale groove is rectangular, and the long side is perpendicular to the card groove.

Further, the specification and range of the injection needle are marked in the scale groove.

The beneficial effects of the present invention are:

1. The present invention adopts a vertical card slot arranged on the cylinder, so that the needle seat is clamped outside the card slot, the needle head is clamped in the card slot, and is determined by the upper and lower long sides of the scale groove opened on the card slot. The detection range is replaced by the way of visual observation instead of numerical reading, which is conducive to simplifying the detection operation steps, reducing the difficulty of detection operation, and improving detection efficiency and detection accuracy.

2. The present invention is simple in structure, easy to manufacture and use.

Description of drawings

Fig. 1 shows a schematic diagram of the structure of the present invention.

Fig. 2 shows a schematic diagram of the structure of the injection needle combined with the present invention.

detailed description

As shown in FIG. 1 , the special gauge for injection needles includes a cylinder 1 , several card slots 2 and scale slots 3 . The clamping slot 2 is used to clamp injection needles of one or several specifications, and the scale slot 3 is used to detect whether the length of the injection needle of a specific specification meets the testing requirements.

The cylinder 1 is cylindrical, and the slots 2 are arranged parallel and vertically along the surface of the cylinder 1 . The outer wall of the cylinder 1 is integrated with a plurality of the card slots 2, which can be used for length detection of injection needles of various specifications. By rotating the cylinder 1, the corresponding engaging slot 2 can be selected for detecting injection needles of corresponding specifications.

The bottom surface 11 of the cylinder 1 is perpendicular to the outer surface of the cylinder 1, and each of the clamping grooves 2 is perpendicular to the end surface 11 and parallel to the outer surface of the cylinder 1, so as to be perpendicular to the needle head and the needle seat. Fixed relationship matches. As shown in Figure 2, when the slot 2 is fitted with the injection needle 91, the top of the needle base 92 can be closely attached to the end surface 11, so that the injection needle 91 is completely inserted into the slot 2, so that Improve the repeatability and accuracy of detection.

The card slot 2 is provided with a plurality of horizontally arranged and parallel scale slots 3 . The opening of the scale groove 3 is rectangular, and the long side is perpendicular to the card groove 2 . The opening position of the scale groove 3 is determined according to the specifications of the injection needle 91 that can be clamped in the card groove 2, and the distance between the upper and lower long sides of the scale groove 3 and the bottom surface 11 is the distance between the upper and lower long sides of the scale groove 3. The maximum and minimum length values of the injection needle 91 detected by the card slot 2 are allowed. Therefore, when the injection needle 91 is completely locked into the card slot 2, if its tip is located in the scale groove 3, the injection needle 91 meets the detection standard; if its tip is not in the scale groove 3 , it does not meet. Therefore, the use of comparative observation instead of the original vernier caliper measurement is conducive to simplifying the detection operation steps, reducing the difficulty of detection operation, and effectively improving the detection efficiency.

The cylinder 1 is made of hard metal, which is not easy to wear and tear, so as to prolong the service life.

The card slot 2 is a semi-cylindrical slot body, and the inner diameter of the slot matches the specification of the needle 91 to be detected.

The specification and range of the injection needle are marked in the scale groove 3 . It is convenient for the operator to select the corresponding card groove 2 and the corresponding scale groove 3 according to the specification of the injection needle to be detected for detection and determination.

Claims (5)

1. injection needle dedicated gauge, it is characterised in that including cylinder（1）, some necks（2）With scale groove（3）, the cylinder （1）Both ends of the surface（11）Perpendicular to the cylinder（1）Outer surface, each neck（2）It is each perpendicular to the end face（11）, parallel open Located at the cylinder（1）Outer surface, the neck（2）Place is provided with scale groove that is some horizontally arranged and being parallel to each other（3）.

2. injection needle dedicated gauge according to claim 1, it is characterised in that the cylinder（1）Using hard metal Material.

3. injection needle dedicated gauge according to claim 1, it is characterised in that the neck（2）For semi-cylindrical groove Body.

4. injection needle dedicated gauge according to claim 1, it is characterised in that the scale groove（3）Open-mouth is in length Square, long side is perpendicular to the neck（2）.

5. injection needle dedicated gauge according to claim 1, it is characterised in that the scale groove（3）Inside it is labeled with noting Penetrate needle gauge and range.