Bottle cap airtightness detection device
By adopting a multiple sealing structure and placement mechanism in the airtightness detection device of the bottle cap, the problem of small air pressure changes or small bubbles in the prior art is solved, and higher detection accuracy and stability are achieved.
Patent Information
- Application Number
- CN202510266080.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2025-06-06
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing method of detecting airtightness of bottle caps is difficult to observe when the air pressure value changes slightly or small bubbles are generated, and the sealing performance at the connection between the puncture needle and the bottle cap is easily affected, affecting the accuracy of the detection results.
A bottle cap airtightness detection device is designed, using a sealing mechanism and a placement mechanism. The sealing mechanism forms a multiple sealing structure through two sealing airbags and sealing gaskets to ensure the sealing performance between the test tube and the barrel cap; the placement mechanism ensures the stability and sealing of the test object through auxiliary plate and spring structure.
The airtightness of the bottle cap is accurately detected when the air pressure value changes relatively small, avoiding inaccurate detection results caused by poor sealing performance at the connection, and improving the stability and accuracy of the detection.
Smart Images
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Abstract
Description
Technical Field
[0001] The invention relates to the technical field of bottle cap detection, and in particular to a bottle cap air tightness detection device. Background Art
[0002] Bottle cap air tightness testing is to verify the sealing performance of bottle caps through a series of test methods to ensure that they can effectively prevent gas leakage. This test is very important in many industries, especially in the fields of pharmaceuticals, cosmetics and food, because the air tightness of bottle caps directly affects the quality and safety of products.
[0003] The existing method for testing the air tightness of bottle caps is to use a PET bottle cap sealing tester with a positive pressure inflation method to test the air tightness of PET bottles by simulating the sealing conditions in actual use. This method is easy to operate, has intuitive results, and has a wide range of applications. However, when the air pressure value changes slightly or small bubbles are generated, observation is difficult, and the puncture needle needs to penetrate the bottle cap during testing. After puncture, the entire product needs to be placed in the liquid. During this process, the sealing performance of the connection is easily affected, affecting the accuracy of the test results. Summary of the invention
[0004] Based on this, it is necessary to provide a bottle cap air tightness detection device to address the problem that when the change value is small, observation is difficult and the sealing performance of the connection between the puncture needle and the bottle cap is easily affected.
[0005] A bottle cap air tightness detection device, comprising: A measuring instrument and a bottom plate, wherein a test cylinder is provided at the top of the bottom plate, a cylinder cover is provided at the top of the test cylinder, an electric push rod is provided between the cylinder cover and the bottom plate, a barometer is provided at the top of the cylinder cover, an air supply pipe is provided on the measuring instrument, the other end of the air supply pipe passes through the cylinder cover and the test cylinder and is provided with a puncture needle, and a placement mechanism is provided at the bottom end of the cylinder cover; A sealing mechanism, the sealing mechanism includes an air storage frame arranged on the top of the bottom plate, a piston plate is arranged in the air storage frame, a first spring is fixedly connected between the piston plate and the inner top wall of the air storage frame, a trigger plate is fixedly connected to the top of the piston plate, the top of the trigger plate passes through the air storage frame, two circular rings are fixedly connected to the bottom end of the cylinder cover, sealing air bags are embedded in the opposite sides of the two circular rings, a four-way tube is arranged between the two sealing air bags and the air storage frame, and the two sealing air bags ensure that a sealing state is achieved between the test cylinder and the cylinder cover when the bottle cap is subjected to an airtightness test.
[0006] In one embodiment, the sealing mechanism further includes a blocking airbag, the surface of the puncture needle is recessed to form a mounting portion, the blocking airbag is disposed on the mounting portion, and the remaining end of the four-way tube is connected to the blocking airbag.
[0007] In one embodiment, the placement mechanism includes an auxiliary plate fixedly connected to the bottom end of the cylinder cover, the bottom end of the auxiliary plate is fixedly connected to a first connecting rod, the inner top wall of the first connecting rod is fixedly connected to a second spring, the bottom end of the second spring is fixedly connected to a second connecting rod, the bottom end of the second connecting rod passes through the first connecting rod, both sides of the second connecting rod are fixedly connected to a third spring, and the other end of the third spring is fixedly connected to a placement seat.
[0008] In one embodiment, a transparent observation window is provided at the front end of the test tube, a magnifying glass is provided on the transparent observation window, and two scale lines are provided on the surface of the test tube, which are respectively located on both sides of the transparent observation window.
[0009] In one embodiment, a liquid inlet valve is disposed on the top of the cylinder cover, and a liquid discharge valve is disposed on the test cylinder.
[0010] In one embodiment, a sealing gasket is disposed at the bottom end of the cylinder cover, the sealing gasket is located between the two rings, and the bottom end of the sealing gasket is in contact with the top end of the test cylinder.
[0011] In one embodiment, a vertical rod is fixedly connected to the bottom end of the cylinder cover, a fixed frame to which the vertical rod is slidably connected is fixedly connected to the surface of the test cylinder, and the vertical rod is located above the trigger plate.
[0012] In one embodiment, the auxiliary plate is a transparent plastic material component, the auxiliary plate is circular in shape, and the diameter of the auxiliary plate is smaller than the inner diameter of the test cylinder.
[0013] In one embodiment, the upper openings of the two placement seats are trumpet-shaped, and round rods are fixedly connected to both sides of the second connecting rod, and the other end of the round rod passes through the third spring and the placement seat in sequence.
[0014] In one embodiment, a limiting plate is fixedly connected to the first connecting rod, and a limiting hole is provided at the front end of the limiting plate.
[0015] 1. The sealing mechanism of the device uses two sealing airbags and sealing gaskets to cooperate with each other. The sealing gasket can increase the sealing performance between the test tube and the tube cover during detection. At the same time, the inflated sealing airbag can fill the gap between the ring and the test tube, and cooperate with the sealing gasket to form a multiple sealing structure to ensure the internal sealing performance during the test, so that the pressure gauge can detect the internal data more accurately, even if the pressure value changes slightly, it can be accurately detected; 2. At the same time, the four-way tube and the blocking airbag cooperate with each other. During the detection process, the blocking airbag can seal the puncture needle and the bottle cap from the inside of the test object to avoid gas leakage from the connection due to the change of air pressure value during the detection. The magnifying glass can magnify the bubbles, making it easier to observe. If bubbles are generated, some of them will be retained on the auxiliary plate, which is more conducive to observation and judgment; 3. The placement mechanism in the device can limit the test object, ensuring that the test object is not prone to shaking when the test tube and the tube cover are combined and tested, thereby increasing the stability during testing. Under the action of the second spring, it can automatically adapt to the length of the test object and has better stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the test tube of the present invention; Figure 3 It is a schematic diagram of the connection between the sealing mechanism and the cylinder cover of the present invention; Figure 4 For the present invention Figure 3 The enlarged view of point A in the middle; Figure 5 It is a schematic diagram of the internal structure of the gas storage frame of the present invention; Figure 6 It is a schematic diagram of the connection between the puncture needle and the four-way tube of the present invention; Figure 7 It is a structural schematic diagram of the placement mechanism of the present invention; Figure 8 It is an exploded view of the second connecting rod, the third spring and the placement seat of the present invention.
[0018] Reference numerals: 100, measuring instrument; 200, bottom plate; 300, test tube; 310, magnifying glass; 400, tube cover; 410, vertical rod; 420, fixing frame; 430, sealing pad; 500, barometer; 600, gas pipe; 610, puncture needle; 700, sealing mechanism; 710, gas storage frame; 711, piston plate; 712, first spring; 713, trigger plate; 714, four-way pipe; 720, ring; 730, sealing airbag; 740, blocking airbag; 800, placement mechanism; 810, auxiliary plate; 820, first connecting rod; 830, second spring; 840, second connecting rod; 850, third spring; 860, placement seat; 870, limit plate; 900, electric push rod. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0020] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present invention are for illustrative purposes only and do not represent the only implementation method.
[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0023] Unless otherwise defined, all technical and scientific terms used in the specification of the present invention have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in the specification of the present invention includes any and all combinations of one or more related listed items.
[0024] Combine the following Figure 1-Figure 8 The bottle cap air tightness detection device of the present invention is described.
[0025] In one embodiment, a bottle cap air tightness detection device includes: The measuring instrument 100 and the bottom plate 200, the top of the bottom plate 200 is provided with a test cylinder 300, the top of the test cylinder 300 is provided with a cylinder cover 400, an electric push rod 900 is provided between the cylinder cover 400 and the bottom plate 200, the top of the cylinder cover 400 is provided with a barometer 500, the measuring instrument 100 is provided with an air supply pipe 600, the other end of the air supply pipe 600 passes through the cylinder cover 400 and the test cylinder 300 and is provided with a puncture needle 610, and the bottom end of the cylinder cover 400 is provided with a placement mechanism 800; The sealing mechanism 700 includes a gas storage frame 710 disposed at the top of the bottom plate 200, a piston plate 711 is disposed in the gas storage frame 710, a first spring 712 is fixedly connected between the piston plate 711 and the inner top wall of the gas storage frame 710, a trigger plate 713 is fixedly connected to the top of the piston plate 711, and the top of the trigger plate 713 passes through the gas storage frame 710, two circular rings 720 are fixedly connected to the bottom end of the cylinder cover 400, and sealing air bags 730 are embedded in the opposite sides of the two circular rings 720, and a four-way pipe 714 is disposed between the two sealing air bags 730 and the gas storage frame 710, and the two sealing air bags 730 ensure that a sealing state is achieved between the test cylinder 300 and the cylinder cover 400 when the bottle cap is subjected to an airtightness test; The middle sealing mechanism 700 utilizes two sealing airbags 730 and a sealing gasket 430 to cooperate with each other. The sealing gasket 430 can increase the sealing performance between the test tube 300 and the tube cover 400 during detection. At the same time, the inflated sealing airbag 730 can fill the gap between the ring 720 and the test tube 300, and cooperate with the sealing gasket 430 to form a multiple sealing structure to ensure the internal sealing performance during testing, so that the barometer 500 can detect internal data more accurately, and can accurately detect even small changes in the air pressure value.
[0026] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the sealing mechanism 700 also includes a blocking airbag 740. The surface of the puncture needle 610 is recessed to form a mounting portion. The blocking airbag 740 is arranged on the mounting portion, and the remaining end of the cross-tube 714 is connected to the blocking airbag 740. During the test, the puncture needle 610 needs to penetrate the bottle cap. When the sealing mechanism 700 is in operation, part of the gas will enter the blocking airbag 740, and the blocking airbag 740 will expand and extend out of the mounting portion to contact the inside of the test object bottle cap, thereby increasing the sealing performance between the puncture needle 610 and the bottle cap, so that when pressurized, the air pressure value inside the test object changes, and there will be no leakage due to the influence of the connection.
[0027] A transparent observation window is provided at the front end of the test tube 300, and a magnifying glass 310 is provided on the transparent observation window. Two scale lines are provided on the surface of the test tube 300, which are respectively located on both sides of the transparent observation window. The magnifying glass 310 can magnify the bubbles during observation, making it more convenient for the tester to observe and the results more intuitive. In addition, the setting of the scale lines makes it more accurate when adding solution into the test tube 300.
[0028] The top of the cylinder cover 400 is provided with a liquid inlet valve, and the test cylinder 300 is provided with a liquid discharge valve. The liquid inlet valve and the liquid discharge valve can cooperate with each other to adjust the volume of the solution in the test cylinder 300, making daily maintenance more convenient.
[0029] A sealing gasket 430 is disposed at the bottom end of the cylinder cover 400 . The sealing gasket 430 is located between the two rings 720 , and the bottom end of the sealing gasket 430 contacts the top end of the test cylinder 300 .
[0030] The bottom end of the cylinder cover 400 is fixedly connected with a vertical rod 410, and the surface of the test cylinder 300 is fixedly connected with a fixed frame 420 to which the vertical rod 410 is slidably connected, and the vertical rod 410 is located above the trigger plate 713. When the cylinder cover 400 is affected by the vertical height, the vertical rod 410 will synchronously follow the cylinder cover 400 to run, and the fixed frame 420 limits the vertical rod 410 and the cylinder cover 400 to ensure that there is no deviation in the path when moving up and down, and to ensure the precise matching of the vertical rod 410 and the trigger plate 713.
[0031] like Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the placement mechanism 800 includes an auxiliary plate 810 fixedly connected to the bottom end of the cylinder cover 400, the bottom end of the auxiliary plate 810 is fixedly connected to a first connecting rod 820, the inner top wall of the first connecting rod 820 is fixedly connected to a second spring 830, the bottom end of the second spring 830 is fixedly connected to a second connecting rod 840, the bottom end of the second connecting rod 840 passes through the first connecting rod 820, both sides of the second connecting rod 840 are fixedly connected to a third spring 850, and the other end of the third spring 850 is fixedly connected to a placement seat 860.
[0032] The auxiliary plate 810 is a transparent plastic material member, and the shape of the auxiliary plate 810 is circular, and the diameter of the auxiliary plate 810 is smaller than the inner diameter of the test tube 300. During the test, the auxiliary plate 810 made of transparent plastic material is also in the solution and located above the test object. If bubbles are generated, most of the bubbles will first reach the bottom of the auxiliary plate 810, which increases the bubble residence time and reduces the difficulty of observation.
[0033] The upper openings of the two placement seats 860 are horn-shaped, and round rods are fixedly connected to both sides of the second connecting rod 840, and the other end of the round rod passes through the third spring 850 and the placement seat 860 in sequence, so that the test object can be placed better.
[0034] The first connecting rod 820 is fixedly connected to a limiting plate 870, and a limiting hole is provided at the front end of the limiting plate 870. The limiting hole can limit the bottle cap of the test object, and the limiting hole is in a semi-hole shape to increase the stability of the test object.
[0035] In this embodiment, the second connecting rod 840 is pulled downward and inserted from the top of the placement seat 860. The opening shape of the placement seat 860 is used to make the placement seat 860 better fit the test object. The third spring 850 is automatically stretched and adapted. After the bottom limitation is completed, the second spring 830 is stretched to make the bottle cap above the test object stuck on the limiting plate 870, so as to limit the test object and ensure that the test tube 300 and the tube cover 400 are not prone to shaking when they are combined and tested, thereby increasing the stability during testing. Under the action of the second spring 830, it can automatically adapt to the length of the test object and has better stability.
[0036] Working principle: Place the product to be tested on the placement mechanism 800, and use the puncture needle 610 to penetrate the bottle cap of the test object. After completion, start the electric push rod 900, and the electric push rod 900 drives the cylinder cover 400 to move downward until the cylinder cover 400 and the test cylinder 300 are in contact. At the same time, when the cylinder cover 400 returns to its original position, it will drive the sealing mechanism 700 to operate, and the vertical rod 410 will contact the trigger plate 713 and squeeze the trigger plate 713 along the descending path of the cylinder cover 400, and at the same time drive the piston plate 711 to move in the gas storage frame 710 to squeeze the internal gas. The gas enters the sealing airbag 730 through the four-way pipe 714, and the two inflated sealing airbags 730 are used to complete the complete contact with the test cylinder 300, so as to achieve the sealing between the test cylinder 300 and the cylinder cover 400. During the testing process, the transparent observation window and the magnifying glass 310 can be used to test the process, and the auxiliary plate 810 and the barometer 500 can be used to observe whether the air tightness of the bottle cap is qualified.
[0037] It should be noted that the measuring instrument 100, magnifying glass 310, barometer 500, electric push rod 900, etc. in the above description are all devices with relatively mature application of existing technologies. The specific models can be selected according to actual needs. At the same time, the measuring instrument 100 and the electric push rod 900 can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation. At the same time, the measuring instrument 100 is an existing detection equipment in this field, which can inflate and pressurize the detection object and monitor the test data at the same time. When the test tube 300 is working, the inside will be filled with an appropriate amount of liquid for airtightness detection operations, which will not be elaborated here.
[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0039] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.
Claims
1. A bottle cap air tightness detection device, characterized in that: include: A measuring instrument (100) and a bottom plate (200), wherein a test cylinder (300) is provided at the top of the bottom plate (200), a cylinder cover (400) is provided at the top of the test cylinder (300), an electric push rod (900) is provided between the cylinder cover (400) and the bottom plate (200), a barometer (500) is provided at the top of the cylinder cover (400), an air supply pipe (600) is provided on the measuring instrument (100), the other end of the air supply pipe (600) passes through the cylinder cover (400) and the test cylinder (300) and is provided with a puncture needle (610), and a placement mechanism (800) is provided at the bottom of the cylinder cover (400); A sealing mechanism (700) is provided, the sealing mechanism (700) comprising a gas storage frame (710) arranged at the top of a bottom plate (200), a piston plate (711) being arranged inside the gas storage frame (710), a first spring (712) being fixedly connected between the piston plate (711) and the inner top wall of the gas storage frame (710), a trigger plate (713) being fixedly connected to the top of the piston plate (711), the top of the trigger plate (713) passing through the gas storage frame (710), two circular rings (720) being fixedly connected to the bottom end of the cylinder cover (400), sealing air bags (730) being embedded in opposite sides of the two circular rings (720), a four-way tube (714) being arranged between the two sealing air bags (730) and the gas storage frame (710), and the two sealing air bags (730) ensuring that a sealing state is achieved between the test cylinder (300) and the cylinder cover (400) when the air tightness test of the bottle cap is carried out.
2. The bottle cap air tightness detection device according to claim 1, characterized in that: The sealing mechanism (700) further comprises a blocking airbag (740), the surface of the puncture needle (610) is recessed to form a mounting portion, the blocking airbag (740) is arranged on the mounting portion, and the remaining end of the four-way tube (714) is connected to the blocking airbag (740).
3. The bottle cap air tightness detection device according to claim 1, characterized in that: The placement mechanism (800) comprises an auxiliary plate (810) fixedly connected to the bottom end of the cylinder cover (400); the bottom end of the auxiliary plate (810) is fixedly connected to a first connecting rod (820); the inner top wall of the first connecting rod (820) is fixedly connected to a second spring (830); the bottom end of the second spring (830) is fixedly connected to a second connecting rod (840); the bottom end of the second connecting rod (840) passes through the first connecting rod (820); both sides of the second connecting rod (840) are fixedly connected to a third spring (850); the other end of the third spring (850) is fixedly connected to a placement seat (860).
4. The bottle cap air tightness detection device according to claim 1, characterized in that: A transparent observation window is provided at the front end of the test cylinder (300), a magnifying glass (310) is provided on the transparent observation window, and two scale lines are provided on the surface of the test cylinder (300), which are respectively located on both sides of the transparent observation window.
5. The bottle cap air tightness detection device according to claim 1, characterized in that: A liquid inlet valve is provided at the top end of the cylinder cover (400), and a liquid discharge valve is provided on the test cylinder (300).
6. The bottle cap air tightness detection device according to claim 1, characterized in that: A sealing gasket (430) is provided at the bottom end of the cylinder cover (400), the sealing gasket (430) is located between the two circular rings (720), and the bottom end of the sealing gasket (430) is in contact with the top end of the test cylinder (300).
7. The bottle cap air tightness detection device according to claim 1, characterized in that: The bottom end of the cylinder cover (400) is fixedly connected to a vertical rod (410), the surface of the test cylinder (300) is fixedly connected to a fixed frame (420) slidably connected to the vertical rod (410), and the vertical rod (410) is located above the trigger plate (713).
8. The bottle cap air tightness detection device according to claim 3, characterized in that: The auxiliary plate (810) is a transparent plastic material component, the shape of the auxiliary plate (810) is circular, and the diameter of the auxiliary plate (810) is smaller than the inner diameter of the test cylinder (300).
9. The bottle cap air tightness detection device according to claim 3, characterized in that: The upper openings of the two placement seats (860) are horn-shaped, and round rods are fixedly connected to both sides of the second connecting rod (840), and the other ends of the round rods pass through the third spring (850) and the placement seat (860) in sequence.
10. The bottle cap air tightness detection device according to claim 3, characterized in that: The first connecting rod (820) is fixedly connected to a limiting plate (870), and a limiting hole is provided at the front end of the limiting plate (870).