GB2234596A - Leak-detecting means for rubber product - Google Patents
Leak-detecting means for rubber product Download PDFInfo
- Publication number
- GB2234596A GB2234596A GB8917339A GB8917339A GB2234596A GB 2234596 A GB2234596 A GB 2234596A GB 8917339 A GB8917339 A GB 8917339A GB 8917339 A GB8917339 A GB 8917339A GB 2234596 A GB2234596 A GB 2234596A
- Authority
- GB
- United Kingdom
- Prior art keywords
- leak
- rubber product
- detecting means
- sleeving
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3218—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators for flexible or elastic containers
Abstract
A leak-detecting means for a rubber product eg. gloves or condoms, comprises hollow sleeving members 30 which are moved by an endless chain 20 and each of which includes a nozzle and cone 32 to sleeve thereon the rubber product, an air-blowing mechanism 40 which moves a pair of air blowing pipes 43 against a pair of members 30 for blowing into the rubber product, a first measuring mechanism 50 for measuring the initial pressure of the blown rubber product, a second measuring mechanism (60) for measuring the final product pressure, a central control device 70 controlling the operation of the above three mechanisms (40, 50, 60) and detecting the pressure difference, and two stripping mechanisms (80, 90) arranged to respectively strip acceptable and rejected rubber products from the sleeving members 30. <IMAGE>
Description
LEAK-DETECTING MEANS FOR RUBBER PRODUCT
The present invention relates to a leak-detecting means, and more particularly to one for a rubber product.
In order to curb the possible contagion of bacteria, the opportunity of using rubber products, e.g. gloves or condoms, is getting more and more. There have been many glove forming machines having the similar structural principle and operating manner, although some of them are differently patented. All of the glove forming machines must have the formed gloves manually stripped off the glove molds and manually leak-detected one by one to have the following disadvantages:
1. They are manpower-consuming. As an example, it needs 6 workers to strip the gloves off the glove molds of a glove forming machine and it requires even more workers to leak-detect the stripped gloves. Thus, a 24 hours running glove forming machine will need tens of workers.
2. The gloves come in direct contact with the hands of the workers and thus cannot be guaranteed in a hygienic state.
It is therefore an object of the present invention to provide a leak-detecting means enabling a rubber product to be automatically leak-detected.
It is further an object of the present invention to provide a leak-detecting means capable of respectively gathering together acceptable and rejected formed gloves.
According to the present invention, a leak-detecting means for a rubber product includes parallel hollow sleeving members spacedly endlessly arranged in circulation and each of which includes a nozzle end and an opposite expanded end for sleeving thereon the rubber product, an air-blowing mechanism capable of repeatedly synchronously moving with the sleeving members within a predetermined region and having an air-blowing pipe capable of urging against the nozzle end to blow an air into the rubber product, a first measuring mechanism capable of repeatedly synchronously moving with the sleeving members and having a first measuring pipe capable of urging against the nozzle end to measure an initial pressure of the blown rubber product. a second measuring mechanism capable of repeatedly synchronously moving with the sleeving members and having a second measuring pipe capable of urging against the nozzle end to measure a final pressure of the blown rubber product, and a central control device controlling the sequential operation of the above 3 mechanisms and detecting the pressure difference between the initial and final pressures.
The present invention may best be understood through the following description with reference to the accompanying drawings, in which:
Fig. 1 is a side view of a preferred embodiment of a leak-detecting means for a rubber product according to the present invention;
Fig. 2 is a top view of a leak-detecting means in
Fig. 1;
Fig. 3 is a top view showing an operation of an air-blowing and a first measuring mechanisms of a leak-detecting means in Fig. 1;
Fig. 4 is a side view showing an air-blowing mechanism engaging with a sleeving member of a leak-detecting means in Fig. 1;
Fig. 5 is a sectional view showing a sleeving member of a leak-detecting means in Fig. 1;
Fig. 6 is a side view showing a stripping mechanism of a leak-detecting means in Fig. 1;
Fig. 7 is a schematic view showing an operation of a stripping mechanism in Fig. G;; Fig. 8 is a schematic view showing a leak-detecting means in Fig. 1 used with a stripping apparatus for a rubber product;
Fig. 9 is a sectional view showing a second preferred embodiment of a sleeving member in a leak-detecting means in Fig. 1;
Fig. 10 is a top view showing a leak-detecting means according to the present invention using a sleeving member in Fig. 9; and
Fig 11 is a side view showing a releasing mechanism of a leak-detecting means in Fig. 10.
Referring now to Figs. 1-7, a leak-detecting means for a rubber product according to the present invention includes a circulating mechanism 20, a plurality of parallel hollow sleeving members 30, an air-blowing mechanism 40, a first measuring mechanism 50, a second measuring mechanism 60, a central control device 70, a first stripping mechanism 80, and a second stripping mechanism 90. Circulating mechanism 20 includes a plurality of chain elements 21 connected together by pins 22 to form a chain piece mounted between a following wheel 24 and an active wheel 23 securing thereto a sprocket 25 for being force-applied to circulate the chain piece alongside a guide 26.
Sleeving members 30 are respectively fixed to the tops of chain elements 21 and each of which includes a body 31 including an expanded truncated cone end 32 having a central hole 320 and a tubular portion 33 having an axial hole 330 inserting therein an air nozzle 34 which includes a valve seat 35 secured against tubular portion 33, a valve body 36 received in seat 35 having a valve hole 350, a plug 37 mounted between seat 35 and body 36, a spring 38 urging plug 37 against valve hole 350, and a positioner 39 positioning spring 38 in valve seat 35.
Valve seat 35 is secured to the top of a respective chain element 21 and expanded end 32 can sleeve thereon a rubber product.
Air-blowing mechanism 40 is so mounted as to be capable of repeatedly synchronously moving with sleeving members 30 within a predetermined region and includes an engaging member 41 capable of being inserted between every two adjacent sleeving members 30 for enabling mechanism 40 to synchronously move with sleeving members 30, an air cylinder 42 connected to and for translating engaging member 41, and two air-blowing pipes 43 secured on engaging member 41 and capable of urging against air nozzles 34 of the respective adjacent two sleeving members 30 to blow an air into the resPective rubber products through the respective central holes 320.
Measuring mechanism 50 is mounted behind the air-blowing mechanism 40 so far as the circulating direction of mechanism 20 is concerned and capable of repeatedly synchronously moving with sleeving members 30 within a predetermined region and has a structure similar to that of air-blowing mechanism 40 to include an engaging member 51, an air cylinder 52 and two measuring pipes 53 capable of respectively urging against the relevant air nozzles 34 to measure initial pressures of the relevant blown rubber products. Measuring mechanism 60 is mounted behind measuring mechanism 50 with respect to the circulating direction and capable of repeatedly synchronously moving with sleeving members 30 within a predetermined region and has a structure substantially the same as that of measuring mechanism 50 for measuring the final pressure of the blown rubber product.
Central control device 70 sequentially controls the operation of mechanisms 40. 50 & 60 and detects to display on a screen the pressure difference between the initial and final pressures of a particular rubber product measured by the relevant measuring pipes of mechanisms 50 & GO.
Stripping mechanism 80 is mounted behind measuring mechanism 60 with respect to the circulating direction and controlled by control device 70 to strip an acceptable rubber product from a relevant sleeving member 30 and includes an air cylinder 81 and a stripping clamp 82 actuated by air cylinder 81. Stripping mechanism 90 also includes an air cylinder 91 and a stripping clamp 92 actuated by cylinder 91 in order to strip a rejected rubber product from another relevant sleeving member 30.
After the present invention is proPerlY assembled, the sleeving member 30 sleeves thereon the rubber product, then mechanism 40 blows an air into the rubber product, then mechanism 50 measures the initial pressure in the rubber product, then mechanism 60 measures again the pressure in the rubber product, then control device 70 compares to obtain the Pressure difference the pressures taken by mechanisms 50 & 60 to determine whether the rubber product is an acceptable or rejected one, and finally stripping mechanism 80 or 90 strips the rubber product of the relevant sleeving member 30 to complete an automatical selection operation.
As shown in Fig. 8, the present invention is used with a rubber product stripping apparatus 100 having been filed in another application. A clutch member 101 enables sleeving members 30 to synchronously move with the glove molds 111 of a rubber product forming machine 110 with stripping apparatus 100 synchronously moving with sleeving members 30 in order to strip the rubber product off the relevant glove mold 111 and to sleeve the stripped rubber product on the relevant sleeving member 30 in order to be leak-detected by the present invention so that the rubber product will not come in contact with the hands of a worker.
As shown in Fig. 9. a second preferred embodiment of a sleeving member 30 of a leak-detecting means according to the present invention further sleeves on tubular portion 33 a pressing member 120 which includes a radically outwardly extending shoulder 121, a stepped inner wall 122 to include an end receiving room 123 for the sleeving portion of the rubber Product and an opposite end positioning room 125, an end O-ring 124 for cushioning the force of pressing member 120 impacting upon expanded end 32, and a spring 127 sleeved on tubular portion 33 and between the bottom 126 of positioning room 125 and a relevant chain element 21 for urging pressing member 120 against expanded end 32.If a foreign force is applied, pressing member 120 can be spaced from expanded end 32 in order that the rubber Product can be sleeved on expanded end 32 and if the foreign force is removed, pressing member 120 will press against expanded end 32 to thus firmly position the rubber product which can be air-blown with a higher pressure in order to shorten the time distance between the first and second pressure measurement performed by mechanisms 50 & 60 in order to increase the product leak-detection speed.
As shown in Fig. 10, in order to facilitate the rubber product to be sleeved on sleeving member 30, circulating mechanism 20 is further provided with a pair of vertically spaced guide pieces 130 each of which includes a plurality of rollers 131 capable of engaging with shoulder 121 in the manner that when sleeving members 30 circulate, guide piece 130 will gradually move pressing member 120 toward the relevant chain element 21 in order that pressing member 120 is sPaced with expanded end 32 so that the rubber Product can be sleeved on expanded end 32.
Thereafter, by the provision of spring 127, pressing member 120 disengages with guide Pieces 130 to hold and position the rubber Product as above described.
As shown in Fig. 11, in order to strip the rubber product off the sleeving member 30, the present leak-detecting means can further be provided with 3 releasing mechanisms 140 each of which includes a securing base 141 having two vertically sPaced sliding rails 142 and passing therethrough the circulating sleeving members 30, a sliding piece 143 reciprocatingly mounted on sliding rails 142 and forming two ends 144 respectively provided with two rollers 145 capable of diametrically opPositely urging against shoulder 121, and an air cylinder 146 secured to base 141 and having a piston rod 147 connected to sliding Piece 143 for translating sliding piece 143 to urge pressing member 120 to move toward the relevant chain element 21 to free the rubber product which will automatically fly away from the relevant sleeving member 30 due to the high air pressure contained therein.
Certainly, releasing mechanisms 140 can also be controlled to operate according to the instructions given by the central control device 70 to assist in selecting the rubber product as an acceptable, a slightly leaking or a rejected one. Since a rejected rubber product will not have a sufficient inner pressure to automatically fly away from the relevant sleeving member 30, it needs to be stripped off the relevant sleeving member 30 by stripping mechanism 90 to be gathered by a ressel or a conveyor.
The accePtable or slightly leaking rubber product can be gathered by providing at the flying direction thereof a stopping plate positioned above a vessel or a conveyor.
The number of releasing mechanisms 140 can be increased or decreased if a finer or a coarser leaking classification of the rubber product is desired.
Certainly, it goes without saying that the chain element 21 can be evenly spaced to circulate around wheels 23 & 24 at a constant speed.
Claims (10)
1. A leak-detecting means for a rubber product, characterized in that said means comprises:
a plurality of parallel hollow sleeving members
spacedly and endlessly arranged in circulation
and each of which includes a first end having an
air nozzle and a second opposite expanded end
having a central hole and is adaPted to sleeve
thereon said rubber product;
an air-blowing mechanism mounted for capable of
repeatedly synchronously moving with said
sleeving members within a predetermined region,
and having an air-blowing pipe capable of urging
aginst said nozzle to blow an air into said
rubber Product through said central hole;;
a first measuring mechanism so mounted as to be
capable of repeatedly synchronously moving with
said sleeving members within a predetermined
region, and including a first measuring pipe
capable of urging against said nozzle to measure
an initial pressure of said blown rubber
product;
a second measuring mechanism mounted behind said
first measuring mechanism so far as the
direction of said circulation is concerned,
capable of repeatedly synchronously moving with
said sleeving members within a predetermined
region, and including a second measuring pipe
capable of urging against said nozzle to aeasure a final pressure of said blown rubber product;;
and
a central control device sequentially controlling
the operation of said air-blowing and said first
and second mechanisms and detecting the pressure
difference between said initial and final
pressures.
2. A leak-detecting means as claimed in Claim 1, characterized in that said means further comprises a stripping mechanism mounted behind said second measuring mechanism with respect to said circulation direction and controlled by said control device to strip said rubber product from said each sleeving member.
3. A leak-detecting means as claimed in Claim 2, characterized in that said means further includes a second stripping mechanism so that said two stripping mechanisms can be arranged to respectively strip acceptable and rejected rubber products from said sleeving members.
4. A leak-detecting means as claimed in Claim 1, 2 or 3, characterized in that said each sleeving'member further sleeves thereon a pressing member which can be spaced from said expanded end if a foreign force is applied in order that said rubber product can be sleeved on said expanded end, and will press against said expanded end to thus firmly position said rubber Product if said foreign force is removed.
5. A leak-detecting means as claimed in Claim 4, characterized in that:
said pressing member includes a radially outwardlY
extending shoulder and an end O-ring for
cushioning the force which said pressing member
impacts upon said expanded end; and
said leak-detecting means further includes a
spring sleeved on said each sleeving member for
enabling said pressing member to Press against
said expanded end.
6. A leak-detecting means as claimed in Claim 5, characterized in that said means further comprises a releasing mechanism mounted behind said stripping mechanisms with respect to said circulation direction and including:
a base;
a sliding piece reciprocatingly mounted on said
base and having two ends caPable of
diametrically oppositely urging against said
extending shoulder; and
an air cylinder secured to said base and having a
piston rod connected to and for translating said
sliding piece.
7. A leak-detecting means as claimed in Claim 5, characterized in that said means further comprises a guide piece capable of engaging with said shoul.der of said pressing member in a manner that when said sleeving members circulate said guide piece will gradually moving said pressing member toward said first end.
8. A leak-detecting means as claimed in any one of the preceding claims, characterized in that each of said air-blowing and said first and second measuring mechanisms includes an engaging member capable of being inserted between every two adjacent said sleeving members for synchronously moving the respective mechanism with said sleeving members.
9. A leak-detecting means as claimed in any one of the preceding claims, characterized in that said sleeving members are evenly spaced to circulate at a constant speed.
10. A leak-detecting means substantially described as hereinbefore with reference to and as shown in the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8917339A GB2234596A (en) | 1989-07-28 | 1989-07-28 | Leak-detecting means for rubber product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8917339A GB2234596A (en) | 1989-07-28 | 1989-07-28 | Leak-detecting means for rubber product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8917339D0 GB8917339D0 (en) | 1989-09-13 |
| GB2234596A true GB2234596A (en) | 1991-02-06 |
Family
ID=10660811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8917339A Withdrawn GB2234596A (en) | 1989-07-28 | 1989-07-28 | Leak-detecting means for rubber product |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2234596A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0581551A2 (en) * | 1992-07-28 | 1994-02-02 | Chartex International Plc | A method and apparatus for testing bag-like means |
| US7131316B2 (en) * | 2004-12-21 | 2006-11-07 | Bha Group, Inc. | Method and apparatus for testing air permeable waterproof gloves |
| CN103861823A (en) * | 2014-02-27 | 2014-06-18 | 张家港先锋自动化机械设备有限公司 | Surface defect detecting and rejecting device in glove production line |
| CN113916450A (en) * | 2021-10-19 | 2022-01-11 | 宋东梅 | Multi-parameter performance detection system for condom production and use method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344773A (en) * | 2018-03-26 | 2018-07-31 | 桂林航天工业学院 | A kind of detection of sheath is press-offed device |
| CN112213052B (en) * | 2020-11-03 | 2021-05-11 | 青岛慧智兰智能科技有限公司 | Method for detecting air tightness of disposable gloves |
-
1989
- 1989-07-28 GB GB8917339A patent/GB2234596A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0581551A2 (en) * | 1992-07-28 | 1994-02-02 | Chartex International Plc | A method and apparatus for testing bag-like means |
| EP0581551A3 (en) * | 1992-07-28 | 1994-02-23 | Chartex Int Plc | |
| US5524478A (en) * | 1992-07-28 | 1996-06-11 | Chartex International Plc | Method and apparatus for testing bag-like means |
| US7131316B2 (en) * | 2004-12-21 | 2006-11-07 | Bha Group, Inc. | Method and apparatus for testing air permeable waterproof gloves |
| CN103861823A (en) * | 2014-02-27 | 2014-06-18 | 张家港先锋自动化机械设备有限公司 | Surface defect detecting and rejecting device in glove production line |
| CN113916450A (en) * | 2021-10-19 | 2022-01-11 | 宋东梅 | Multi-parameter performance detection system for condom production and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8917339D0 (en) | 1989-09-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |