Detection tool for detecting inner diameter of non-woven fabric sleeve

Abstract

The utility model relates to the technical field of non-woven fabric sleeve manufacturing and measurement, in particular to a detection tool for detecting the inner diameter of a non-woven fabric sleeve. In order to improve the measuring speed and the measuring accuracy of the inner diameter of the non-woven fabric sleeve, the utility model provides a testing fixture for detecting the inner diameter of the non-woven fabric sleeve, the testing fixture for detecting the inner diameter of the non-woven fabric sleeve comprises an inner diameter core rod and a gravity compression ring, and the diameter D1 of the upper end of the inner diameter core rod is smaller than the diameter D2 of the lower end of the inner diameter core rod. A plurality of diameter scale marks are arranged on the side surface of the inner diameter core rod; the inner diameter D0 of the gravity pressing ring is larger than or equal to the diameter D2 of the lower end of the inner diameter core rod. The detection tool for detecting the inner diameter of the non-woven fabric sleeve is simple and convenient to operate, does not need repeated measurement, and can effectively improve the measurement speed and the measurement accuracy of the inner diameter of the non-woven fabric sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing and measuring non-woven fabric sleeves, in particular to a measuring tool for detecting the inner diameter of the non-woven fabric sleeve. Background Art

[0002] When manufacturing auto parts by injection molding, elastic non-woven fabrics are usually welded to form a cylindrical non-woven fabric sleeve and placed on the insert in the injection mold. In the process of injection molding auto parts, in order to prevent the non-woven fabric sleeve placed on the insert from floating on the surface of the auto parts product formed by injection molding due to unstable inner diameter size or being displaced by the injection molding glue, the inner diameter of the non-woven fabric sleeve needs to be accurately measured. The conventional method of measuring the inner diameter of the non-woven fabric sleeve currently used has the following problems:

[0003] 1. Non-woven fabrics are elastic materials and are easy to deform. It is difficult to measure the inner diameter of the non-woven fabric cover using a caliper or optical measuring instrument, and the measurement results are easily affected by the human factors of the measuring personnel;

[0004] 2. When using a caliper for repeated measurements, the inner diameter of the non-woven fabric cover is easily enlarged by the caliper, affecting the measurement accuracy.

[0005] In summary, it can be seen that the conventional measurement method for measuring the inner diameter of the non-woven fabric sleeve not only has a slow measurement speed but also has a low measurement accuracy. Utility Model Content

[0006] In order to improve the measurement speed and measurement accuracy of the inner diameter of a non-woven fabric cover, the utility model proposes a gauge for detecting the inner diameter of a non-woven fabric cover, the gauge for detecting the inner diameter of the non-woven fabric cover comprises an inner diameter core rod and a gravity pressure ring, the upper end diameter D1 of the inner diameter core rod is smaller than the lower end diameter D2 of the inner diameter core rod, and a plurality of diameter scale lines are arranged on the side surface of the inner diameter core rod; the inner diameter D0 of the gravity pressure ring is greater than or equal to the lower end diameter D2 of the inner diameter core rod. When using the inspection tool for detecting the inner diameter of the non-woven fabric cover of the utility model, first fix the inner diameter core rod vertically; then, put the non-woven fabric cover to be detected from the upper end of the inner diameter core rod onto the inner diameter core rod; then, put the gravity pressure ring on the upper end of the non-woven fabric cover to be detected, and the gravity pressure ring descends along the inner diameter core rod under the action of gravity, thereby driving the non-woven fabric cover to be detected to slide naturally along the inner diameter core rod to the corresponding specification on the inner diameter core rod along with the gravity pressure ring; finally, read the scale value corresponding to the corresponding diameter scale line at the corresponding position of the lower end of the non-woven fabric cover to be detected and the inner diameter core rod, and it is considered that the scale value corresponding to the diameter scale line is the inner diameter value of the non-woven fabric cover. It can be seen that the use of the inspection tool for detecting the inner diameter of the non-woven fabric cover of the utility model to detect the inner diameter of the non-woven fabric cover is simple and convenient to operate, and there is no need for repeated measurements, which can effectively improve the measurement speed and measurement accuracy of the inner diameter of the non-woven fabric cover.

[0007] Preferably, the diameter scale lines are evenly distributed in the axial direction of the inner diameter mandrel, and the difference between any two adjacent diameter scale lines is equal. In this way, the inner diameter mandrel is simple and convenient to process, and the scale values ​​corresponding to the diameter scale lines are convenient and quick to read during measurement. Furthermore, the upper end surface of the inner diameter mandrel is connected to the side surface via an arc surface. In this way, when the inner diameter detection fixture of the non-woven fabric cover of the utility model is used to detect the inner diameter of the non-woven fabric cover, it is convenient to place the non-woven fabric cover to be detected and the gravity pressure ring on the inner diameter mandrel without causing damage to the non-woven fabric cover to be detected.

[0008] Preferably, a positioning hole is provided at the lower end of the inner diameter mandrel. Thus, when the inner diameter mandrel is fixed vertically, the inner diameter mandrel can be fixed by a positioning column inserted into the positioning hole, and the fixing is simple and convenient. Furthermore, the central axis of the positioning hole coincides with the central axis of the inner diameter mandrel. Thus, the production and processing of the inner diameter mandrel is facilitated, and the stability of the vertical fixing of the inner diameter mandrel can be improved.

[0009] Preferably, the inner diameter mandrel and the gravity pressing ring are made of stainless steel. Thus, the use of stainless steel to support the inner diameter mandrel and the gravity pressing ring can ensure the strength and surface smoothness of the inner diameter mandrel and the gravity pressing ring, and prevent the inner diameter mandrel and the gravity pressing ring from rusting and affecting the use and measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the first angle structure of the inner diameter core rod in the inspection tool for inspecting the inner diameter of the non-woven fabric cover of the utility model;

[0011] Figure 2 for Figure 1 A schematic diagram of the second angle structure of the inner diameter mandrel shown;

[0012] Figure 3 for Figure 1 Schematic diagram of the amplified structure of Q in FIG.

[0013] Figure 4 The utility model is a schematic diagram of the structure of the gravity pressure ring in the inspection tool for detecting the inner diameter of the non-woven fabric sleeve. DETAILED DESCRIPTION

[0014] Next, combine Figures 1 to 4 , the inner diameter detection fixture of the non-woven fabric cover of the utility model is described in detail.

[0015] like Figures 1 to 4As shown, the inner diameter detection fixture of the non-woven fabric cover of the utility model includes an inner diameter mandrel 1 and a gravity pressure ring 2. The upper end diameter D1 of the inner diameter mandrel 1 is smaller than the lower end diameter D2 of the inner diameter mandrel 1, and a plurality of diameter scale lines 11 are arranged on the side surface of the inner diameter mandrel 1; the inner diameter D0 of the gravity pressure ring is greater than or equal to the lower end diameter D2 of the inner diameter mandrel. Preferably, the diameter scale lines 11 are evenly distributed in the axial direction of the inner diameter mandrel 1, and the difference between any two adjacent diameter scale lines 11 is equal. In this way, the inner diameter mandrel 1 is simple and convenient to process, and the scale value corresponding to the diameter scale line 11 is convenient and quick to read during measurement. Preferably, the upper end surface 12 of the inner diameter mandrel 1 is connected to the side surface by an arc surface (not shown in the figure). In this way, when the inner diameter detection fixture of the non-woven fabric cover of the utility model is used to detect the inner diameter of the non-woven fabric cover, it is convenient to put the non-woven fabric cover to be detected and the gravity pressure ring 2 on the inner diameter core rod 1, and the non-woven fabric cover to be detected will not be damaged. Preferably, a positioning hole 13 is provided at the lower end of the inner diameter core rod 1. In this way, when the inner diameter core rod 1 is vertically fixed, the inner diameter core rod 1 can be fixed by a positioning column (not shown in the figure) inserted into the positioning hole 13, and the fixation is simple and convenient. Preferably, the central axis of the positioning hole 13 coincides with the central axis of the inner diameter core rod 1. In this way, it is convenient to produce and process the inner diameter core rod 1, and the stability of the vertical fixation of the inner diameter core rod 1 can be improved. Preferably, for the convenience of processing, the side surface of the inner diameter core rod 1 is processed to form a step-like structure, and each step surface formed by the processing is used as the diameter scale line 11. Preferably, the inner diameter core rod 1 and the gravity pressure ring 2 are made of stainless steel. In this way, using stainless steel material to support the inner diameter core rod 1 and the gravity pressure ring 2 can not only ensure the strength and surface smoothness of the inner diameter core rod 1 and the gravity pressure ring 2, but also prevent the inner diameter core rod 1 and the gravity pressure ring 2 from rusting and affecting the use and measurement accuracy.

[0016] When using the inspection tool for detecting the inner diameter of the non-woven fabric cover of the utility model, first fix the inner diameter core rod vertically; then, put the non-woven fabric cover to be detected from the upper end of the inner diameter core rod onto the inner diameter core rod; then, put the gravity pressure ring on the upper end of the non-woven fabric cover to be detected, and the gravity pressure ring descends along the inner diameter core rod under the action of gravity, thereby driving the non-woven fabric cover to be detected to slide naturally along the inner diameter core rod to the corresponding specification on the inner diameter core rod along with the gravity pressure ring; finally, read the corresponding diameter scale line of the lower end of the non-woven fabric cover to be detected and the corresponding position of the inner diameter core rod, and it is considered that the value of the diameter scale line is the inner diameter value of the non-woven fabric cover. It can be seen that the use of the inspection tool for detecting the inner diameter of the non-woven fabric cover of the utility model to detect the inner diameter of the non-woven fabric cover is simple and convenient to operate, and there is no need for repeated measurements, which can effectively improve the measurement speed and measurement accuracy of the inner diameter of the non-woven fabric cover.

Claims

1. A non-woven fabric cover inner diameter detection tool, characterized in that: The inner diameter detection fixture of the non-woven fabric cover comprises an inner diameter core rod and a gravity pressure ring, wherein the upper end diameter D1 of the inner diameter core rod is smaller than the lower end diameter D2 of the inner diameter core rod, and a plurality of diameter scale lines are arranged on the side surface of the inner diameter core rod; the inner diameter D0 of the gravity pressure ring is greater than or equal to the lower end diameter D2 of the inner diameter core rod.

2. The inner diameter detection tool for the non-woven fabric cover according to claim 1, characterized in that: The diameter scale lines are evenly distributed in the axial direction of the inner diameter core rod, and the difference between any two adjacent diameter scale lines is equal.

3. The inner diameter detection tool of the non-woven fabric cover according to claim 2, characterized in that: The upper end surface of the inner diameter core rod is connected to the side surface via an arc surface.

4. The inner diameter detection tool for the non-woven fabric cover according to claim 3, characterized in that: A positioning hole is arranged at the lower end of the inner diameter core rod.

5. The inner diameter detection tool of the non-woven fabric cover according to claim 4, characterized in that: The central axis of the positioning hole coincides with the central axis of the inner diameter core rod.

6. The inner diameter detection tool for the non-woven fabric cover according to any one of claims 1 to 5, characterized in that: The inner diameter core rod and the gravity pressure ring are made of stainless steel.

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