JP2007271278A - Inspection method for cap with projection part, and device therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To precisely measure a flip-down (FD) value and a flip-up (FU) value of a cap with a projection part without generating a personal error of a measuring person, while reducing a measuring error, and to allow the measurement under a stable measuring condition. <P>SOLUTION: This inspection method has a decompression process for attaching the cap 27 with the projection part to an opening part of a dummy container 2 provided with a pressure sensor 8, and for decompressing internal pressure of the dummy container, and a pressurizing process for pressurizing an inside of the dummy container, followed to the decompression process, a microphone 23 detects a sound when the projection part of the cap with the projection part is flipped down in the decompression process, and a sound when the projection part is flipped up in the pressurizing process, a timing signal is generated with the detection of the sound, and the internal pressure in the dummy container is read out in the instant thereof from the pressure sensor 8, to be displayed as the flip-down value and the flip-up value. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method and apparatus for inspecting a cap with a protruding portion that inspects whether or not flip-down and flip-up of a cap with a protruding portion having a deformable protruding portion that protrudes outward from the top wall of the cap operates properly. About.

Conventionally, as a cap that can determine whether or not the degree of vacuum in a container is maintained at an appropriate level in a packaged food such as stuffed food, a cap with a protruding portion that has a deformable protruding portion that protrudes outward from the top surface of the cap is provided. Widely adopted. In the cap with a protrusion, a protrusion (referred to as a button) provided to protrude from the top wall of the cap is recessed inward (referred to as flip-down) when the internal pressure of the container reaches a predetermined reduced pressure. ("FD"), and when the degree of vacuum is broken by opening the plug or the like, the protrusion returns to the initial state (referred to as flip-up, hereinafter simply referred to as FU). Since the cap with the protruding portion emits a “pong” sound in both FD and FU, the initial sealing state of the container is ensured by the change in shape of the protruding portion and the sound. Therefore, it can be determined whether or not the container has been maintained in an appropriate vacuum state without a sealing failure or the like depending on whether or not the sound is generated when the container is opened. Therefore, as a cap with a protrusion, it is required to surely cause FD and FU operation by a change in preset internal pressure, and in the cap manufacturing process, an appropriate change in internal pressure set by the protrusion, Quality control is performed by inspecting whether FU occurs reliably. The degree of vacuum generated by the FD and FU is mainly affected by the plate thickness, rigidity, shape, and the like of the protrusion, but is also affected by the rate of change of the degree of vacuum during measurement. Therefore, in order to measure accurate FD values and FU values for each cap, it is necessary to perform measurement under the same rate of change in vacuum.
As a conventional FD / FU operation inspection method for a cab with a protruding part, the cap with a protruding part is set to an inspection jig that can adjust the degree of vacuum, and the measurer gradually increases the degree of vacuum while looking at the scale of the Bourdon tube pressure gauge. The pressure is measured by reading the position of the pressure gauge needle at the moment when the popping sound is heard, and the measured pressure (degree of vacuum) at that time is defined as the FD value, and the FD value is a value within a predetermined range. It is inspected by whether or not.
In addition, as a method for inspecting a cap having a flexible ceiling panel for the same purpose, two different pressure differences are applied to the ceiling panel one after another, and the displacement position of the ceiling panel corresponding to the pressure difference is detected by a detection plunger. A method has been proposed (see Patent Document 1).
Japanese Patent Publication No. 52-19462

As described above, in the inspection of the cap with the protruding portion whether the protruding portion of the conventional cap with the protruding portion operates properly, the value of the moment when the measurer makes a sound during FD and FU is visually confirmed. Therefore, it is difficult to perform a uniform quality inspection due to individual differences among measurers. In addition, since the Bourdon tube type pressure gauge has a large error and a large scale unit, accurate pressure measurement is difficult. In addition, since the FD value and the FU value are also affected by the change rate of the degree of vacuum at the time of measurement as described above, accurate FD value and FU value are measured at the same change rate for each cap. It is necessary to measure. However, the conventional visual inspection method of the pressure gauge has a problem that the amount of change in vacuum value (change speed) cannot be read by the pressure gauge. Moreover, when the thing of the said patent document 1 is applied to the FD / FU operation | movement inspection of the cap with a protrusion part, since the protrusion part periphery will also go up and down together according to the change of a vacuum degree, the motion of only a protrusion part is detected. Therefore, it is difficult to accurately measure the internal pressure when FD / FU is generated.
Therefore, the present invention can measure the FD / FU value of the cap with the protruding portion with high accuracy without any measurement error, with little measurement error, stable measurement conditions, and high quality control of the cap with the protruding portion. An object is to provide an inspection method and an inspection apparatus for a cap with a part.

  The method for inspecting a cap with a protruding portion of the present invention that solves the above-described problem is a method for inspecting a cap with a protruding portion having a deformable protruding portion that protrudes outward from the top wall of the cap, and is a dummy provided with a pressure sensor. Attaching a cap with a protrusion to the opening of the container to reduce the internal pressure in the dummy container; and following the pressure reducing process, pressurizing the dummy container, and in the pressure reducing process, When the projecting part of the cap with the projecting part is flipped down, a sound is detected when the projecting part is flipped up in the pressurizing step, and a timing signal is generated by the detection of the sound to generate an internal pressure in the dummy container at that moment. Is read out from the pressure sensor and displayed as a flip-down value and a flip-up value.

  According to a second aspect of the present invention, in the method for inspecting a cap with a protruding portion according to the first aspect, in the pressure reducing step, an on-off control valve is used to connect a vacuum generated by a vacuum pump into the dummy container. On-off control is performed, and the flow rate is adjusted by a flow rate adjusting valve to reduce the pressure at a predetermined pressure reduction rate. In the pressurizing step, the communication of the atmosphere to the dummy container is controlled on / off by the on-off control valve. Further, pressurization is performed at a predetermined pressurization speed by adjusting the flow rate with a flow rate adjusting valve. According to a third aspect of the present invention, in the method for inspecting a cap with a protrusion according to the first or second aspect, the depressurization step includes a rapid depressurization step in which the depressurization speed is increased from the start of depressurization to a predetermined internal pressure to rapidly depressurize The pressure reducing step includes a depressurizing step at the time of depressurization to a predetermined internal pressure at a predetermined depressurization rate that is gentler than that of the rapid depressurizing step. It is characterized by comprising a rapid pressurizing step of rapidly pressurizing to atmospheric pressure at a pressurization rate that is faster than the pressurizing step. According to a fourth aspect of the present invention, in the method for inspecting a cap with a protruding portion according to any one of the first to third aspects, the pressure reduction speed of the dummy container internal pressure in the pressure reducing step at the time of measurement is calculated as a flip-down speed, and at the time of the measurement. The pressurizing speed of the dummy container internal pressure in the pressurizing step is calculated and displayed as a flip-up speed.

  The inspection device for a cap with a protrusion of the present invention that achieves the above object includes a dummy container that has a cap mounting part with a protrusion and a pressure sensor and is connected to a vacuum source, and is installed above the dummy container. Sound detecting means for detecting the sound generated by the protruding portion of the cap with the protruding portion at the time of flip-down and flip-up and converting it into an electric signal, internal pressure adjusting means for adjusting and controlling the internal pressure in the dummy container, and controlling the internal pressure adjusting means In addition, it comprises an arithmetic control / display device that displays a flip-down value and a flip-up value based on inputs from the sound detection means and the pressure sensor.

  According to a sixth aspect of the present invention, in the inspection apparatus for a cap with a protruding portion according to the fifth aspect, the dummy container includes a container main body having a pressure sensor and connected to a vacuum source, and the container Composed of a combination of a head part having a connecting part connected to the main body so as to be shaft-sealable and a cap mounting part with a projecting part corresponding to the type of cap with the projecting part, and the head part can be attached to the container main body part in a replaceable manner. It is characterized by the above. The invention described in claim 7 is the inspection device for a cap with a protrusion according to claim 6, wherein the internal pressure adjusting means is a vacuum pump and a vacuum piped between the vacuum pump and the dummy container. The vacuum pipe line is branched into four systems: a rapid pressure reduction line, a measurement pressure reduction line, a measurement pressure line, and a rapid pressure line, the rapid pressure reduction line and the measurement pressure reduction line. In addition, an ON / OFF open / close valve and a flow control valve are provided in each of the measurement pressurization lines, and an ON / OFF open / close valve is provided in the quick pressurization line, and the measurement pressurization pipe and the quick pressurization pipe One end of the path is in communication with the atmosphere. Furthermore, the invention according to claim 8 is the inspection device for a cap with a protruding portion according to any one of claims 5 to 7, wherein the arithmetic control / display device converts an output from the pressure sensor into an electric signal. It consists of an aeroelectric converter, a central processing unit and a display. The central processing unit issues a control signal to the internal pressure adjusting means based on a preset program, and from the aeroelectric converter and the sound detecting means. Display information is emitted to the display unit based on the above signal. Furthermore, the invention described in claim 9 is the inspection apparatus for caps with protrusions according to any one of claims 5 to 8, wherein the indicator is a dummy container at the time of pressure in the dummy container, at the time of flip-down and at the time of flip-up. The flip-down value and the flip-up value, which are the internal pressure, are displayed.

According to the first and fifth aspects of the present invention, the sound generated during the FD and FU is automatically detected and used as a timing signal for reading the numerical data of the pressure gauge. Compared to what has been confirmed visually by a conventional measurer, there is no artificial factor of the measurer and a precise inspection can be performed.
According to the second and seventh aspects of the invention, in addition to the above-described effects, the pressure adjustment in the dummy container is performed by connecting the on-off control valve and the flow rate of the vacuum generated from the vacuum pump and the atmosphere to the dummy container. Since the control valve is used in combination, if the flow rate control valve is set in advance according to the type of the cap or the like, the degree of vacuum can be reliably adjusted by simple control of only on-off control.
According to the third and eighth aspects of the invention, the vacuum state can be secured by automatically increasing the pressure reduction speed at the start of pressure reduction based on a preset program, and can be performed at an appropriate speed at the time of measurement. Measurement accuracy. Moreover, since the rapid pressurization (atmospheric intake) is performed after the FU value measurement, the measurement time can be shortened. Moreover, since the pressure change in the dummy container is automatically displayed on the display, it is possible to always check the pressure change during measurement.
According to the inventions of claims 4 and 9, since the flip-down speed and the flip-up speed at the time of measurement are further measured and displayed, the same conditions FD and FU values can always be measured, and the measurement conditions are stable. , Accuracy can be improved.
According to the invention of claim 6, if only a plurality of types of heads are prepared according to the type of the cap with the protruding portion to be measured, a plurality of types of inspection can be performed with one inspection device by replacing only the heads. It can correspond to the inspection of the cap with the protruding portion.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a protrusion inspection method and apparatus for a cap with a protrusion according to the present invention will be described below in detail with reference to the drawings.
FIG. 1: shows the principal part longitudinal cross-sectional schematic diagram of the inspection apparatus of the cap with a protrusion part which concerns on embodiment of this invention. The inspection device 1 for a cap with a protrusion according to the present embodiment includes a dummy container 2 that sets a cap with a protrusion to be inspected and vacuum-sucks the protrusion, and the protrusion of the cap with a protrusion is positioned on the dummy container. It comprises sound detection means 3 that collects sound generated during FD / FU and converts it into an electrical signal, internal pressure adjustment means for adjusting and controlling the degree of vacuum in the dummy container, and a central control / display device.

  The dummy container 2 is composed of a container main body 5 fixed on a table 20 and a head 6 that is replaceably attached to the container main body 5. The container body 5 is a hollow container having an open top, and is formed of a metal material or a synthetic resin material having a predetermined thickness having rigidity so as not to be deformed by a vacuum. An air pipe 7 communicating with the vacuum circuit of the internal pressure adjusting means is connected, and a pressure sensor 8 for detecting the internal pressure of the dummy container 2 is provided. The opening is formed with a female screw 9 into which the head portion is screwed, and the container body is maintained so that the inner secret is maintained in a state in which the fitting cylinder portion 11 of the head portion described later is fitted. The part 5 is provided with an O-ring 10 as appropriate. On the other hand, the head portion 6 is formed in a cylindrical body whose upper and lower ends are open, and a lower portion thereof is formed with a male screw that engages with a female screw of the container main body portion 5 and is in close contact with the O-ring 10. It is the fitting cylinder part 11 which seals a fitting part, and is the cap mounting part 16 which mounts | wears with the cap 27 with a protrusion part which an upper end part test | inspects. The head portion 6 is formed with the fitting cylinder portion 11 in the same shape, and the cap mounting portion 16 is a cap with a protruding portion so that the cap 27 with a protruding portion to be inspected can be closely attached as shown in FIG. By preparing a plurality of types formed by changing the diameter and the portion of the cap that is in close contact with the inner surface of the top wall according to the type of the cap, it can be selected and used according to the type of the cap. Various types of caps with protrusions can be inspected. For example, depending on whether or not the sealing material is lined on the inner wall surface of the cap to be inspected, the upper end of the cap mounting portion 16 is simply formed in an arc shape, or as shown in FIG. Select what is provided.

  The sound detection means 3 is held coaxially with the dummy container 2 by a holder 22 that can be adjusted to an appropriate height position on a support rod 21 erected on an appropriate base 20 as shown. The sound detection means 3 of the present embodiment includes a microphone 23 and a microphone holder 24. The microphone holder 24 is formed in a cone shape to improve sound collection efficiency as shown in the figure, and the microphone 23 is attached to the center thereof. Yes. In the illustrated embodiment, the microphone holder 24 is fixed to the holder 22 via a cushioning material 25 such as urethane foam in order to prevent external impacts and the like from being transmitted to the microphone.

FIG. 2 is a vacuum circuit diagram of the internal pressure adjusting means according to this embodiment connected to the dummy container 2.
In the internal pressure adjusting means 29 of this embodiment, the vacuum piping between the vacuum pump 30 and the dummy container 2 includes a rapid decompression conduit 31, a measurement decompression conduit 32, a measurement pressurization conduit 33, and a rapid pressurization conduit 34. It is branched into four lines. More precisely, an open / close valve 36 and a regulator 37 are provided in the basic pipe line 35 from the vacuum pump 30, and the high-pressure side is branched into the above four lines and communicated with the dummy container. The rapid pressure reducing line 31 is used to ensure that the cap is in close contact with the dummy container in a stable and stable posture by rapidly depressurizing the cap with the protruding portion attached to the dummy container 2. In the rapid pressure reducing conduit 31, a first electromagnetic valve SV1 as an on-off valve and a first needle valve 41 as a flow control valve are arranged. The opening degree of the first needle valve 41 can be appropriately set by a needle, and is set in advance to be larger than the opening degree of the needle valve installed in the pressure reducing conduit 32 for measurement described later. When the first electromagnetic valve SV1 is opened. The high-speed exhaust from the inside of the dummy container to the vacuum pump can be realized. The pressure reducing pipe 32 at the time of measurement is connected to the basic pipe to the vacuum pump on the operating side, and similarly to the quick pressure reducing pipe 31, a second electromagnetic valve SV2 as an on-off valve and a second needle valve 43 as a flow control valve are provided. Although arranged, the second needle valve 43 is set to have an opening smaller than that of the first needle valve 41 so as to ensure a decompression speed that can accurately measure the occurrence of FD during measurement.

Further, the measurement pressurizing line 33 is for introducing air at a constant speed and a constant flow rate into a dummy container that is in a depressurized state at the time of FU measurement, which will be described later, and gradually pressurizing to a predetermined vacuum level at which the FU ends. The operating side is open to the atmosphere via the silencer 46. A third electromagnetic valve SV3 as an on-off valve and a third needle valve 45 as a flow rate control valve are disposed in the measurement pressurizing pipe 33 as in the case of the pipe. By adjusting the opening degree of the third needle valve 45, the pressurization speed of the dummy container at the time of FU measurement can be controlled. Further, the second pressure line 34 is provided with a fourth electromagnetic valve SV 4, and the operating side end is opened to the atmosphere via the silencer 48. Accordingly, by opening the fourth electromagnetic valve SV4, the pipe line is opened to the atmosphere, and the atmosphere rapidly flows into the dummy container, and rapid pressurization to atmospheric pressure is performed.
In the figure, 50 is a surge tank for stabilization, 51 is a manual open / close valve provided in communication with the basic circuit, and is opened and closed as necessary at the time of inspection or the like so as to communicate with the atmosphere. Reference numeral 52 denotes a silencer.

  FIG. 3 is a block diagram showing a central control / display device of the inspection device for caps with protrusions according to the present invention. The output of the pressure sensor 8 attached to the dummy container 2 is converted into an analog signal by the aeroelectric converter 55 and converted into a digital signal by the A / D converter 57 of the central control panel 56, and an arithmetic processing unit (CPU). 58. On the other hand, the signal from the microphone 23 is amplified by the amplifier 61 and input to the CPU of the central control board 56. Based on these signals, the CPU 58 digitally displays the current internal pressure in the dummy container on the pressure indicator 59, and also uses the internal pressure at the time of FD generation and FU generation as the FD value and FU value as an FD / FU value display 60. Are digitally displayed and stored in a memory. On the other hand, according to a preset program, when the set internal pressure is reached, the first to fourth solenoid valves SV1 to SV4 are output with operation signals to control the opening and closing of the first to fourth solenoid valves SV1 to SV4. Yes.

The inspection apparatus for caps with protrusions according to this embodiment is configured as described above, and an inspection method for FD and FU values using the apparatus will be described with reference to a graph shown in FIG.
The head part 6 of the dummy container 2 is selected and joined to the main body part 5 according to the cap with the protruding part to be measured, and the cap 27 with the protruding part is attached to the head part 6 of the dummy container 2 and set. In this state, the pressure in the dummy container is atmospheric pressure, the electromagnetic valves SV1 to SV4 in the vacuum circuit are all closed, and the first to third needle valves 41, 43, and 45 are respectively opened to a predetermined level. Is set to degrees. From this state, the vacuum pump 30 is operated and the on-off valve 36 is opened to prepare for inspection. In this state, resetting is performed, the initial state is confirmed, and inspection is started. When the start protrusion of the control panel 56 is pushed, first the first solenoid valve SV1 and the second solenoid valve SV2 are opened, and the rapid decompression conduit 31 and the measurement decompression conduit 32 communicate with the vacuum pump 30, and the inside of the dummy container is opened. The pressure is rapidly reduced, and the pressure in the dummy container is rapidly reduced to a preset point (A) as shown in the graph of FIG. In FIG. 4, the horizontal axis represents the elapsed time from the start of measurement, and the vertical axis represents the pressure change in the dummy container.

  As a result, the cap with the protruding portion attached to the head portion is vacuum-sucked to be in close contact with the head. The rapid pressure reduction is performed at a degree of vacuum in a range where FD is unlikely to occur. When the pressure is reduced to the point (A) along the straight line A, the first electromagnetic valve SV1 is automatically closed and the rapid pressure reduction line 31 is closed, The vacuum pump 30 and the dummy container 2 communicate with each other only through the pressure reducing pipe line 32 during measurement, and the process proceeds to the pressure reducing step during measurement. As a result, the inside of the dummy container is depressurized to a predetermined degree of vacuum at an appropriate speed along a straight line shown in FIG. During the pressure reducing operation, the internal pressure in the dummy container is digitally displayed on the pressure display 59 sequentially. The decompression speed is displayed on the FD / FU value display 60 together with the FD / FU value described later. The depressurization speed and the pressurization speed described later are calculated and displayed by the arithmetic and control unit with the amount of change per second near the FD or FU. Therefore, in this embodiment, the amount of change in the vacuum value per second can be displayed, and adjustment can be made so that the FD and FU are always generated under the same change in the vacuum value. FD and FU values can be measured.

  If FD occurs in the meantime, the sound is detected by the microphone 23, and the signal amplified through the sound amplifier 61 is input to the CPU 58 as a timing signal, and the vacuum value at that moment is read from the pressure sensor from the CPU and the FD · It is displayed on the FU value display 60 and stored as data. Accordingly, by looking at the display, it can be determined whether or not the FD / FU value of the cap with the protruding portion being inspected is within the reference, and an accurate inspection can be performed. If FD does not occur until the predetermined vacuum level (C) is reached, the FD value is not displayed, or a failure is displayed when the vacuum level (C) is reached. When the degree of vacuum reaches the point (C), the second electromagnetic valve SV2 is closed, the third electromagnetic valve SV3 is opened, and the pressurization process at the time of measurement is started. In the measurement pressurization step, the degree of vacuum in the dummy container 2 is set at a constant speed along the line C shown in FIG. 4 by introducing the atmosphere into the dummy container 2 in accordance with the opening of the third needle valve 45. (E) Decrease until point is reached. If FU occurs during that time, the sound is detected by the microphone 23 as in the case of the FD, and the signal amplified through the sound amplifier 61 is input to the CPU 58 as a timing signal. The FU value is displayed on the FD / FU value display 60. At the same time, the amount of change in the vicinity for 1 second is displayed as the pressing speed. When the degree of vacuum drops to a preset point (E), SV4 is opened and the inspection of the atmosphere in the dummy container is completed in a fully opened state. When the inspection work is finished, the manual on-off valve 51 is opened to bring the basic pipeline into communication with the atmosphere.

  As described above, the inspection method and apparatus for the cap with the protruding portion according to the preferred embodiment of the present invention have been described. For example, in the embodiment, in the rapid pressure reducing step, the first electromagnetic valve SV1 and the second electromagnetic valve SV2 are opened, and the vacuum pump 30 and the dummy container 2 are communicated with each other via the rapid pressure reducing line 31 and the pressure reducing line 32 at the time of measurement. However, in the rapid decompression step, the second electromagnetic valve SV2 may be closed and communicated with the vacuum pump only through the rapid decompression line 31. When the first electromagnetic valve and the second electromagnetic valve are opened and rapid pressure reduction is performed, the opening degree of the first needle valve is not necessarily larger than the opening degree of the second needle valve, but only the first electromagnetic valve is used. When the rapid pressure reduction is performed by opening, the opening degree of the first needle valve 41 needs to be larger than the opening degree of the second need valve 43. Similarly, in the rapid pressurizing step, the third electromagnetic valve SV3 may be closed and only the fourth electromagnetic valve SV4 may be opened. In addition, it is desirable to provide the rapid decompression process and the rapid pressurization process as in the above-described embodiment, but the decompression process and the pressurization process are not necessarily required, and the decompression process and the pressurization process are always in a constant vacuum change rate state. You may go on. Therefore, in that case, it is not necessary to branch the vacuum line of the internal pressure adjusting means into four systems, and the configuration can be simplified. Further, the dummy container may be one in which the container main body and the head are integrated.

  The method and apparatus for inspecting a cap with a protrusion according to the present invention appropriately obtains the FD value and the FU value of a cap with a protrusion applied to a rigid container such as a glass container or a metal container as a cap with a sealing guarantee function. Therefore, it can be used for inspection of caps with protruding portions at the manufacturing site and development site of such caps.

It is a principal part longitudinal cross-sectional outline of the inspection apparatus of the cap with a protrusion concerning embodiment of this invention. It is a vacuum circuit diagram of the internal pressure adjusting means. It is a block diagram which shows the central control and display apparatus. It is a graph which shows the internal pressure change in the dummy container in the test | inspection method of the cap with a protrusion concerning embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cap inspection apparatus with protrusion part 2 Dummy container 3 Sound detection means 5 Container main-body part 6 Head part 7 Air piping 8 Pressure sensor 9 Female screw 10, 17 O-ring 11 Fitting cylinder part 16 Cap mounting part 22 Holding plate 23 Microphone 24 Microphone holder 25 Buffer material 27 Cap with protrusion 29 Internal pressure adjusting means 30 Vacuum pump 31 Rapid pressure reduction line 32 Measurement pressure reduction line 33 Measurement pressure line 34 Rapid pressure line 35 Basic line 36 Open / close valve 37 Regulator 41 , 43, 45 56 Control panel 57 A / D converter 58 CPU 59 Pressure indicator 60 FD / FU value indicator 61 Amplifier SV1 to SV4 First to fourth solenoid valves

Claims (9)

  A method for inspecting a cap with a protrusion having a deformable protrusion protruding outward from a top wall of the cap, wherein the dummy container is provided with a cap with a protrusion at an opening of a dummy container provided with a pressure sensor. A depressurizing step for depressurizing the internal pressure of the inside, and a pressurizing step for pressurizing the inside of the dummy container following the depressurizing step, and when the projecting portion of the cap with the projecting portion is flipped down in the depressurizing step, Detecting a sound when the protruding portion flips up, generating a timing signal by detecting the sound, reading the internal pressure in the dummy container at that moment from the pressure sensor, and displaying it as a flip down value and a flip up value A method for inspecting a cap with a protrusion characterized by the above.   In the decompression step, the vacuum generated by a vacuum pump is communicated into the dummy container by on / off control using an on / off control valve, and the flow rate is regulated by a flow rate adjusting valve, thereby reducing the pressure at a predetermined decompression speed. In the pressurizing step, the atmosphere is communicated with the dummy container by on / off control with an on / off control valve, and the flow rate is adjusted with a flow rate adjusting valve to perform pressurization at a predetermined pressurization speed. The method for inspecting a cap with a protrusion according to claim 1.   The depressurization step consists of a rapid depressurization step of rapidly depressurizing from the start of depressurization to a predetermined internal pressure and a rapid depressurization step, and a depressurization step at the time of depressurization to a predetermined internal pressure at a predetermined depressurization rate gentler than the rapid depressurization step, The pressurizing step includes a pressurizing step at the time of pressurizing to a predetermined internal pressure at a predetermined pressurizing rate and a quick pressurizing step of rapidly pressurizing to atmospheric pressure at a pressurizing rate faster than the pressurizing step at the time of measuring. Item 3. A method for inspecting a cap with a protrusion according to Item 1 or 2.   Calculating the pressure reduction speed of the dummy container internal pressure in the pressure reducing process at the time of measurement as a flip-down speed, and calculating the pressure increasing speed of the dummy container pressure in the pressure increasing process at the time of measurement and displaying it as a flip-up speed. The inspection method of the cap with a protrusion part in any one of Claims 1-3 to do.   A dummy container having a cap mounting part with a projecting part and a pressure sensor and connected to a vacuum source, and installed above the dummy container to detect the sound generated by the projecting part of the cap with the projecting part during flip-down and flip-up. Sound detection means for converting to an electrical signal, internal pressure adjustment means for adjusting and controlling the internal pressure in the dummy container, and a flip-down value and flip-up based on inputs from the sound detection means and the pressure sensor that control the internal pressure adjustment means An inspection device for a cap with a protruding portion, comprising an arithmetic control / display device for displaying a value.   The dummy container includes a container body portion having a pressure sensor and connected to a vacuum source, a connecting portion connected to the container body portion so as to be capable of shaft sealing, and a cap with a protruding portion corresponding to the type of cap with the protruding portion. 6. The inspection apparatus for a cap with a protruding portion according to claim 5, comprising a combination of a head portion having a cap mounting portion, wherein the head portion can be replaceably mounted on the container main body portion.   The internal pressure adjusting means includes a vacuum pump and a vacuum pipe line piped between the vacuum pump and the dummy container. The vacuum pipe line is a rapid pressure reduction line, a measurement pressure reduction line, and a measurement pressure pipe. The rapid pressure reducing line, the measurement pressure reducing line, and the measurement pressure increasing line are each provided with an on-off open / close valve and a flow rate control valve. The cap with a projection according to claim 6, wherein an on-off on-off valve is provided in the path, and one end of the measurement pressurization line and the quick pressurization line communicate with the atmosphere. Inspection device.   The arithmetic control / display device includes an aeroelectric converter that converts an output from the pressure sensor into an electric signal, a central processing unit, and a display. The central processing unit is configured to perform the internal pressure based on a preset program. 8. A control signal is emitted to the adjusting means, and display information is emitted to the display device based on signals from the aeroelectric converter and the sound detecting means. Inspection device for caps with protrusions.   The protrusion according to any one of claims 5 to 8, wherein the indicator displays a pressure in the dummy container, a flip-down value and a flip-up value which are pressures in the dummy container at the time of flip-down and flip-up. Inspection device for cap with part.

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