Air tightness measuring jig

Abstract

The utility model belongs to the technical field of pipe cap production, and particularly relates to an air tightness measuring jig which comprises a base and a sealing cover, the base is provided with a groove body in an inward concave mode, the top of the groove body is provided with a detection air channel, and the detection air channel vertically extends towards the top face of the base to form a plurality of detection holes. The top surface of the base is provided with installation positions used for installing TO-CAN at positions corresponding to the detection holes, the sealing cover covers the top surface of the base, the top of the sealing cover is provided with a plurality of air leakage holes, the bottom surfaces of the air leakage holes and the top surfaces of the installation positions form detection positions, and the detection positions are used for detecting the TO-CAN. The inner wall of the sealing cover is in sealing fit with the side face of the base, and a good detection effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe cap production technical field, especially a kind of airtightness measuring fixture. BACKGROUND

[0002] TO-CAN pipe cap is welded on pipe end or installed on pipe end outer thread to cover pipe, for closing pipeline, its function is same with pipe plug.But TO-CAN pipe cap can be directly rotated on pipe, without other pipe, as optical interface, TO-CAN pipe cap ensures the smooth transmission of optical signal, in optoelectronic field, TO-CAN pipe cap provides durable and reliable protection to optical element in transmission and receiving application field, to improve the protection effect, the structural integrity of TO-CAN, airtightness detection is important step to guarantee product quality. SUMMARY

[0003] The utility model discloses a kind of airtightness measuring fixtures, to solve the technical problem of the structural integrity of TO-CAN, airtightness detection in prior art.

[0004] To achieve the above object, the utility model embodiment provides a kind of airtightness measuring fixtures, including base and sealing cover, the base is inwardly recessed and is provided with groove, the groove top is communicated with detection air channel, the detection air channel is vertically extended with several detection holes to the base top surface, the base top surface is provided with the installation site for installing TO-CAN in each the detection hole corresponding position, the sealing cover covers the base top surface, the sealing cover top is equipped with several gas leakage holes, and the bottom surface of each gas leakage hole is formed with detection site with the top surface of each installation site respectively, the sealing cover inner wall is sealed with the base side surface.

[0005] Preferably, the middle part of the sealing cover is provided with a tapped hole, and the top surface of the base is provided with a threaded hole corresponding to the tapped hole.

[0006] Preferably, the installation site is provided with a mounting table, the mounting table protrudes upward from the detection hole, and the detection hole is communicated upward through the mounting table.

[0007] Preferably, the bottom of the mounting table is provided with a sealing ring.

[0008] Preferably, the detection air channel includes at least two groups, and each detection air channel is parallel to each other.

[0009] Preferably, the bottom of the base is provided with a fixing seat, and the fixing seat is inwardly recessed and provided with a mounting groove.

[0010] The air tightness measuring jig provided by the embodiment of the utility model has at least one of the following technical effects:

[0011] In use, the groove body is communicated with the vacuum pump, a plurality of TO-CANs are installed in the respective mounting positions on the top of the base, the top surface of the TO-CAN is located in the detection position, the detection hole is communicated with the TO-CAN at this time, the sealing cover is buckled on the top surface of the base, the inner side wall of the sealing cover is sealed and abuts against the outer side wall of the base, the inner top wall of the sealing cover abuts against the top surface of the TO-CAN, and the air leakage hole of the sealing cover abuts against the top surface of the TO-CAN; when the vacuum pump extracts air, if the air tightness of the TO-CAN is poor or the structure of the TO-CAN is damaged, the air will enter the detection hole through the air leakage hole and the TO-CAN in turn, and finally be extracted by the vacuum pump through the groove body, so that the air tightness of the TO-CAN is detected, and good detection effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 The whole structure schematic diagram of the air tightness measuring jig provided by the embodiment of the utility model is shown in the figure.

[0013] Fig. 2 The internal structure diagram of the base of the air tightness measuring jig provided by the embodiment of the utility model is shown in the figure.

[0014] Fig. 3 The structure schematic diagram of the sealing cover of the air tightness measuring jig provided by the embodiment of the utility model is shown in the figure.

[0015] In the figure, various reference signs represent:

[0016] 1-base, 11-groove body, 12-threaded hole, 13-butterfly screw, 14-mounting table, 141-sealing ring, 2-sealing cover, 21-air leakage hole, 22-detection position, 23-tapped hole, 3-detection air channel, 31-detection hole, 4-fixing seat, 41-mounting groove. DETAILED DESCRIPTION

[0017] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the utility model, and cannot be understood as a limitation of the utility model.

[0018] In the description of the embodiments of the utility model, it is understood that the directions or position relations indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are the directions or position relations shown based on the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and thus cannot be understood as indicating or implying that the devices or elements indicated must have a specific direction, be constructed and operated in a specific direction, and thus cannot be understood as limiting the utility model.

[0019] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified and limited.

[0020] In the embodiments of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0021] In one embodiment of the utility model, as shown in Figs. 1-3 As shown, a gas tightness measuring jig is provided, which comprises a base 1 and a sealing cover 2, the base 1 is inwardly recessed to be provided with a groove body 11, the groove body 11 is connected with a detection air duct 3 at the top, the detection air duct 3 vertically extends to the top surface of the base 1 with a plurality of detection holes 31, the top surface of the base 1 is provided with a mounting position for mounting TO-CAN at the position corresponding to each detection hole 31, the sealing cover 2 covers the top surface of the base 1, the sealing cover 2 is provided with a plurality of air leakage holes 21 at the top, the bottom surface of each air leakage hole 21 is respectively formed with a detection position 22 on the top surface of each mounting position, and the inner wall of the sealing cover 2 is sealingly matched with the side surface of the base 1.

[0022] Further, the middle of the sealing cover 2 is provided with a tapped hole 23, the top surface of the base 1 is provided with a threaded hole 12 corresponding to the tapped hole 23, and the tapped hole 23 and the threaded hole 12 are connected by a winged screw 13. Specifically, the sealing cover 2 is buckled on the top surface of the base 1, the inner side wall of the sealing cover 2 is sealed and abuts against the outer side wall of the base 1, in order to strengthen the connection between the sealing cover 2 and the base 1, the tapped hole 23 is arranged on the sealing cover 2, the threaded hole 12 is arranged on the base 1, the winged screw 13 is screwed through the tapped hole 23 to the threaded hole 12 of the base 1, and the sealing cover 2 and the base 1 are gradually pressed, the sealing strength between the sealing cover 2 and the base 1 is improved, and the air tightness effect is improved.

[0023] Further, the mounting position is provided with a mounting table 14, the mounting table 14 protrudes upward from the detection hole 31, and the detection hole 31 is communicated upward through the mounting table 14. The bottom of the mounting table 14 is provided with a sealing ring 141. Specifically, the TO-CAN is buckled on the mounting table 14, and the bottom of the TO-CAN is placed on the sealing ring 141. When the vacuum pump extracts air, if the TO-CAN is intact and has good air tightness, the TO-CAN is pressed tightly on the sealing ring 141, the external air cannot enter the detection hole 31 through the bottom of the TO-CAN by the elastic support of the sealing ring 141, and the accuracy of detection is ensured.

[0024] Further, the detection air duct 3 includes at least two groups, and each detection air duct 3 is parallel to each other. Specifically, by arranging multiple groups of detection air ducts 3, the number of mounting positions on the base 1 can be increased, thereby improving the number of TO-CANs detected by a single base 1, improving production efficiency, and in order to better communicate each detection hole 31, the detection air duct 3 is formed by punching from one side of the base 1 until the two sides of the base 1 are punched to form the detection air duct 3, the holes on both sides of the base 1 are plugged during detection to achieve a sealing effect, and the production difficulty is reduced.

[0025] Further, the bottom of the base 1 is provided with a fixing seat 4, the fixing seat 4 is recessed inwardly to form an installation groove 41, and the installation groove 41 is communicated with the groove body 11. Specifically, the installation groove 41 is used to realize the connection between the base and the vacuum pump, and better connection effect is achieved.

[0026] Working principle: in use, through the groove 11 is fixed to the vacuum pump, by installing a plurality of TO-CAN respectively in the mounting position on the top of the base 1, the detection hole 31 is communicated with TO-CAN at this time, then the sealing cover 2 is buckled on the top of the base 1, the inner side wall of the sealing cover 2 is sealed and abuts against the outer side wall of the base 1, at the same time, the inner top wall of the sealing cover 2 abuts against the top surface of TO-CAN, and the air leakage hole 21 of the sealing cover 2 abuts against the top surface of TO-CAN; when the vacuum pump extracts air, if the air tightness of TO-CAN is poor or the structure of TO-CAN is damaged, the air will enter the detection hole 31 through the air leakage hole 21 and TO-CAN in turn, and finally enter the detection air duct 3 and be extracted by the vacuum pump through the groove 11, so as to realize the detection of the air tightness of TO-CAN and achieve good detection effect.

[0027] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An air tightness measuring jig characterized by: The utility model provides a detection device for TO-CAN, which comprises a base and a sealing cover, the base is inwardly recessed to be provided with a groove, a detection air channel is communicated at the top of the groove, a plurality of detection holes are vertically extended from the detection air channel to the top surface of the base, the top surface of the base is provided with mounting positions for mounting TO-CAN at positions corresponding to the detection holes, the sealing cover covers the top surface of the base, a plurality of air leakage holes are arranged at the top of the sealing cover, and detection positions are formed between the bottom surface of each air leakage hole and the top surface of each mounting position in a sealing fit with the side surface of the base.

2. The air tightness measurement fixture of claim 1, wherein: A tapped screw hole is arranged in the middle of the sealing cover, the top surface of the base is provided with a threaded hole corresponding to the tapped screw hole, and the tapped screw hole and the threaded hole are connected through a butterfly screw.

3. The air tightness measurement fixture of claim 1, wherein: An installation table is arranged in the mounting position, the installation table protrudes upward from the detection hole, and the detection hole is communicated upward through the installation table.

4. The air tightness measurement fixture of claim 3, wherein: A sealing ring is sleeved at the bottom of the installation table.

5. The air tightness measurement fixture of claim 1, wherein: The detection air channel comprises at least two groups, and the detection air channels are parallel to each other.

6. The air tightness measurement fixture of claim 1, wherein: A fixing seat is arranged at the bottom of the base, the fixing seat is inwardly recessed to be provided with an installation groove, and the installation groove is communicated with the groove.

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