CN219736714U - Gauge for detecting air tightness of cap - Google Patents

Abstract

The utility model discloses a gauge for detecting the air tightness of a cap, which relates to the technical field of detecting the air tightness of the cap and comprises a base and an aluminum plate, wherein a cavity is formed in the top surface of the base, an air inlet channel communicated with the cavity is formed in one side wall of the base, a joint is fixedly arranged at the other end of the air inlet channel, an annular groove is formed in the top surface of the base and positioned outside the cavity, a sealing ring matched with the annular groove is embedded in the annular groove, a plurality of threaded holes II positioned outside the annular groove are formed in the top surface of the base, through holes penetrating through the top surface and the bottom surface of the annular groove are formed in the aluminum plate, an aluminum cylinder positioned outside the through holes is fixedly formed in the top surface of the aluminum plate, a shoulder is formed between the aluminum cylinder and the through holes, the aluminum cylinder and the aluminum plate are integrally formed, and a plurality of mounting holes respectively corresponding to the threaded holes II are formed in the aluminum plate. The beneficial effects of the utility model are as follows: compact structure, improved air tightness detection precision and simple operation.

Description

Gauge for detecting air tightness of cap

Technical Field

The utility model relates to the technical field of detecting the air tightness of caps, in particular to a detecting tool for detecting the air tightness of caps.

Background

The structure of a cap is shown in fig. 1-2, and the cap comprises a cylinder body 1 and a sealing plate 2, wherein the sealing plate 2 is fixedly arranged on the top surface of the cylinder body 1, the sealing plate 2 and the cylinder body 1 are integrally formed, and the cap is used for being installed in a power supply assembly. For manufacturing reasons, cracks or holes are easy to appear on each barrel 1, so that the air tightness of the barrel 1 of each cap needs to be detected, the air tightness of the barrel 1 of each cap is detected in a workshop by adopting a detection clamp shown in fig. 3-4, the detection clamp comprises a pressing plate 3, a base 4 and a step hole 5 formed in the top surface of the base 4, an air inlet channel 6 communicated with the small hole of the step hole 5 is formed in the side wall of the base 4, a joint 7 is connected to the other end of the air inlet channel 6, and threaded holes I8 are formed in the top surface of the base 4 and in the two sides of the step hole 5.

The method for detecting the air tightness of the cylinder 1 of the cap by using the detection clamp comprises the following steps:

s1, a worker embeds a cylinder body 1 of a first cap to be detected on a shoulder of a step hole 5, then lays a pressing plate 3 on the top surface of a sealing plate 2 of the cap, then penetrates through the pressing plate 3 through a locking screw I9 and is in threaded connection with a threaded hole I8 to fix the pressing plate 3, and the cap is fixed between the shoulder and the pressing plate 3 under the threaded connection force, so that the fixation of the cap is realized, as shown in FIG. 5;

s2, after the cap is fixed, a worker puts the detection clamp into the water tank, then a certain amount of pressure gas is introduced into the joint 7, at the moment, the worker observes whether the water in the water tank has bubbles, if the bubbles appear in the water tank, the crack or hole appears on the barrel 1, the cap is a defective product, the worker takes the detection clamp out of the water tank, removes the pressing plate 3 after taking the detection clamp out, and then removes the defective product; if no bubble appears in the water tank, the cylinder 1 is indicated to have no crack or hole, the cap is a qualified product, a worker takes the detection clamp out of the water tank, removes the pressing plate 3 after taking the detection clamp out, and puts the qualified product into the charging basket, so that the air tightness detection of the cylinder 1 of the first cap is finally realized; the operation is repeated in this way, so that the airtightness of a plurality of caps can be continuously detected.

However, such a detection jig, while capable of detecting the air tightness of the cap, still has the following technical drawbacks in the art: if the size of the slit or hole in the cylinder 1 of the cap is small, no obvious air bubble is generated in the water tank, and a worker erroneously judges that the unqualified product is a qualified product, so that the detection clamp has the technical defect of low detection air tightness precision. Therefore, there is a need for a gauge that improves the accuracy of air tightness detection.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a gauge for detecting the air tightness of a cap, which has the advantages of compact structure, improved air tightness detection precision and simplicity in operation.

The aim of the utility model is achieved by the following technical scheme: the utility model provides a cap gas tightness detects with examining utensil, it includes base and aluminum plate, the cavity has been seted up on the top surface of base, has seted up the inlet channel who communicates the cavity on the lateral wall of base, has set firmly the joint on the other end of inlet channel, and the ring channel has been seted up on the top surface of base and is located the outside of cavity, has seted up a plurality of screw holes II that are located the ring channel outside on the top surface of base, set up the through-hole that runs through its top surface and bottom surface setting in the aluminum plate, set firmly the aluminium section of thick bamboo that is located the through-hole outside on the top surface of aluminum plate, be formed with the shoulder between aluminium section of thick bamboo and the through-hole, aluminium section of thick bamboo and aluminum plate integrated into one piece have seted up a plurality of mounting holes corresponding with screw hole II respectively on the aluminum plate.

A threaded hole II is formed in the top surface of the base and located at four corners of the base, and a mounting hole is formed in each of the four corners of the aluminum plate.

The inner diameter of the aluminum cylinder is larger than the outer diameter of the cap to be detected.

The annular groove is arranged coaxially with the cavity.

The thickness of the aluminum cylinder is 0.8-1 mm.

The utility model has the following advantages: compact structure, improved air tightness detection precision and simple operation.

Drawings

FIG. 1 is a schematic structural view of a cap;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the structure of the base of the inspection jig;

FIG. 4 is a schematic view of the structure of a platen of the inspection jig;

FIG. 5 is a schematic view of securing a cap;

FIG. 6 is a schematic view of the structure of the base of the present utility model;

FIG. 7 is a schematic diagram of the connection of an aluminum plate to an aluminum can according to the present utility model;

FIG. 8 is a schematic view of the locking of the aluminum plate to the base;

FIG. 9 is a schematic diagram of the main section of FIG. 8;

FIG. 10 is a schematic view of an aluminum can wrapped around the exterior of a cap;

in the figure, a cylinder body, a 2-sealing plate, a 3-pressing plate, a 4-base, a 5-stepped hole, a 6-air inlet channel, a 7-connector, an 8-threaded hole I, a 9-locking screw I, a 10-base, an 11-aluminum plate, a 12-cavity, a 13-annular groove, a 14-sealing ring, a 15-threaded hole II, a 16-through hole, a 17-aluminum cylinder, an 18-mounting hole and a 19-locking screw II are arranged.

Detailed Description

The utility model is further described below with reference to the accompanying drawings, the scope of the utility model not being limited to the following:

as shown in fig. 6-7, a gauge for detecting air tightness of a cap comprises a base 10 and an aluminum plate 11, wherein a cavity 12 is formed in the top surface of the base 10, an air inlet channel 6 communicated with the cavity 12 is formed in one side wall of the base 10, a joint 7 is fixedly arranged at the other end of the air inlet channel 6, an annular groove 13 is formed in the top surface of the base 10 and located outside the cavity 12, the annular groove 13 and the cavity 12 are coaxially arranged, a plurality of threaded holes II15 located outside the annular groove 13 are formed in the top surface of the base 10, through holes 16 penetrating through the top surface and the bottom surface of the base 10 are formed in the aluminum plate 11, an aluminum cylinder 17 located outside the through holes 16 is fixedly arranged in the top surface of the aluminum plate 11, the inner diameter of the aluminum cylinder 17 is larger than the outer diameter of the cap to be detected, the thickness of the aluminum cylinder 17 is 0.8-1 mm, a shoulder is formed between the aluminum cylinder 17 and the through holes 16, the aluminum cylinder 17 and the aluminum plate 11 are integrally formed, and a plurality of mounting holes 18 corresponding to the threaded holes II15 are formed in the aluminum plate 11.

The top surface of the base 10 is provided with a threaded hole II15 at four corners, the four corners of the aluminum plate 11 are provided with a mounting hole 18, and the aluminum plate 11 and the aluminum cylinder 17 are consumable materials and are not used after being used once.

The working process of the utility model is as follows:

s1, a worker puts a sealing ring 14 into an annular groove 13; the worker takes one aluminum plate 11, then places the aluminum plate 11 flat on the top surface of the base 10 and ensures that the aluminum plate 11 is pressed against the seal ring 14, then the worker uses the locking screw II19 to pass through the mounting hole 18 of the aluminum plate 11 and to be screwed with the screw hole II15 to fix the aluminum plate 11 on the base 10, as shown in fig. 8 to 9, the pressing plate 3 is pressed against the base 10 under the screwing force of the locking screw II19 and the screw hole II15, and the seal ring 14 seals the gap between the base 10 and the aluminum plate 11;

s2, a worker inserts the opening of the cap to be detected into the aluminum barrel 17 from top to bottom, supports the cap on an annular shoulder formed by the through hole 16 and the aluminum barrel 17, and then presses the outer part of the aluminum barrel 17 around the circumferential direction of the aluminum barrel 17 by using a pressing head of a spinning device to press the aluminum barrel 17 on the outer part of the barrel 1 of the cap, namely, tightly coats the aluminum barrel 17 on the outer part of the barrel 1 of the cap, as shown in fig. 10;

s3, a worker introduces a certain amount of pressure gas into the joint 7, the pressure gas sequentially passes through the air inlet channel 6, the cavity 12 and the through hole 16 and finally acts on the inner wall of the cylinder body 1 of the cap, after a period of time, the worker stops introducing the pressure gas, at the moment, the worker checks whether bumps exist on the outer surface of the aluminum cylinder 17, if the bumps exist on the aluminum cylinder 17, the worker judges that the detected cap is a defective product, and if the bumps exist on the cylinder body 1 of the cap, the worker indicates that the detected cap exists in a crack or a hole; if checking that no convex points exist on the aluminum cylinder 17, the cylinder 1 of the cap is proved to have no cracks or holes, and workers judge that the detected cap is a qualified product;

in the operation from step S1 to step S3, the inspection tool judges whether the barrel 1 has cracks or holes by observing whether bumps appear on the outer wall of the aluminum barrel 17, and compared with the inspection fixture used in a workshop, the inspection tool judges whether the barrel 1 has cracks or holes by observing bubbles, the inspection is more visual, and the worker is ensured to accurately distinguish qualified products and unqualified products, so that the detection precision of the air tightness is greatly improved.

S4, taking out the cap to be detected, screwing out the locking screw II19 by a worker, then detaching the aluminum plate 11 from the base 10, separating the aluminum cylinder 17 from the cylinder body 1 by the worker after detaching, taking out the cap from the aluminum cylinder 17 by the worker, and placing the qualified product into a charging basket or placing the unqualified product into a waste charging basket after taking out;

s5, repeating the operations of the steps S1-S4, and continuously detecting the air tightness of the caps.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a cap gas tightness detects with examining utensil which characterized in that: the aluminum plate comprises a base (10) and an aluminum plate (11), wherein a cavity (12) is formed in the top surface of the base (10), an air inlet channel (6) communicated with the cavity (12) is formed in one side wall of the base (10), a joint (7) is fixedly arranged at the other end of the air inlet channel (6), an annular groove (13) is formed in the top surface of the base (10) and located outside the cavity (12), a plurality of threaded holes II (15) located outside the annular groove (13) are formed in the top surface of the base (10), through holes (16) penetrating through the top surface and the bottom surface of the aluminum plate (11) are formed in the aluminum plate (11), a shoulder is formed between the aluminum cylinder (17) and the through holes (16), and a plurality of mounting holes (18) corresponding to the threaded holes II (15) are formed in the aluminum plate (11) in an integrated mode.

2. The gauge for detecting air tightness of a cap according to claim 1, wherein: a threaded hole II (15) is formed in the top surface of the base (10) and located at four corners of the base, and a mounting hole (18) is formed in each of the four corners of the aluminum plate (11).

3. The gauge for detecting air tightness of a cap according to claim 1, wherein: the inner diameter of the aluminum cylinder (17) is larger than the outer diameter of the cap to be detected.

4. The gauge for detecting air tightness of a cap according to claim 1, wherein: the annular groove (13) is coaxially arranged with the cavity (12).

5. The gauge for detecting air tightness of a cap according to claim 1, wherein: the thickness of the aluminum cylinder (17) is 0.8-1 mm.