EP0319180A2 - Perfektionierter Mechanismus für eine Prüfvorrichtung von Glasbehältern - Google Patents

Perfektionierter Mechanismus für eine Prüfvorrichtung von Glasbehältern Download PDF

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Publication number
EP0319180A2
EP0319180A2 EP88310956A EP88310956A EP0319180A2 EP 0319180 A2 EP0319180 A2 EP 0319180A2 EP 88310956 A EP88310956 A EP 88310956A EP 88310956 A EP88310956 A EP 88310956A EP 0319180 A2 EP0319180 A2 EP 0319180A2
Authority
EP
European Patent Office
Prior art keywords
cam
container
gage
finish
carriage
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Withdrawn
Application number
EP88310956A
Other languages
English (en)
French (fr)
Other versions
EP0319180A3 (de
Inventor
Timothy W. Shay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emhart Industries Inc
Original Assignee
Emhart Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Emhart Industries Inc filed Critical Emhart Industries Inc
Publication of EP0319180A2 publication Critical patent/EP0319180A2/de
Publication of EP0319180A3 publication Critical patent/EP0319180A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/04—Sorting according to size
    • B07C5/12—Sorting according to size characterised by the application to particular articles, not otherwise provided for
    • B07C5/122—Sorting according to size characterised by the application to particular articles, not otherwise provided for for bottles, ampoules, jars and other glassware
    • B07C5/124—Sorting according to size characterised by the application to particular articles, not otherwise provided for for bottles, ampoules, jars and other glassware by means of mechanical measuring devices which may also control electrical contacts

Definitions

  • the present invention relates to mechanisms for use with automatic apparatus for inspecting glass containers and the like, and more particularly to an improved cam-driven assembly for controlling the motion of an inspection head in coordination with the motion of a container through an inspection zone.
  • the plug gage plunger assembly is caused to move horizontally in coordination with the motion of bottles through the inspection zone by means of the same cam 24, via a cam follower roller 25 which is maintained in peripheral contact with the cam 24 by biasing means (i.e., springs 26 and 27) which for­wardly urge the carriage 16 in which the plunger and cam are mounted.
  • the cam 24 includes a linear motion portion (as illustrated, comprising about 180 degrees of the cam) during which equal angular move­ments of the cam cause equal linear traversing move­ments of the carriage and plunger. This causes the gage and the article to be inspected to move hori­zontally in unison during the gaging operation. It is noted that the other portion of the cam has a contour which causes the carriage to be moved back to its starting position taking any suitable form to minimize shock, such as a sinusoidal curve.
  • a light source is mounted to the carriage for the vertical plunger to illuminate each bottle, and a second light source is located below the bottle path, in order that checks may be detected by the respective optical sensors.
  • the bottle is grasped between rollers on the one side and belts on the other, as well as the rollers at the finish, to rotate it at least 360 degrees as it passes through the test area.
  • Commonly assigned U.S. Patent No. 3,690,456 to W.S. Powers, Jr., Glass Container Crack Detector discloses an improvement to the '950 check detector apparatus wherein the apparatus includes a braking assembly at the downstream end of the belts, which assembly causes the container to lose contact with each belt and stop the container from rotating.
  • a further object is to improve the operation of other types of inspection apparatus using the '704 mechanism for moving the inspection head.
  • the invention provides an improved gaging device for glass containers and the like of the type including means for conveying containers past a testing area at a constant linear speed, a reciprocable carriage member, a testing gage mounted on a vertically re­ciprocable plunger to be inserted in the finish of a container to be tested, a bearing member eccen­trically mounted to said cam, said bearing member being mounted to said plunger so that the rotation of the cam causes the vertical reciprocation of the plunger, and a cam follower member which follows the periphery of the rotating cam and is coupled to said carriage to cause the traversing of the carriage and the carriage-mounted plunger in parallel to the conveyance of the container past the testing area during the movement of the testing gage into and out of the finish of the container; wherein the improve­ment comprises an improved profile of said rotatably mounted cam having an extended linear motion contour occupying substantially more than 180° of the angu­lar profile of said cam.
  • the improved cam has
  • the testing gage which enters the finish of the container and penetrates the container for a predetermined stroke, unless the finish is constric­ted beyond an allowable tolerance.
  • the plug gage enters the finish of the container when the cam follower is located at the beginning of the extended linear motion portion of the cam profile, and leaves the finish at the end of said extended linear motion portion.
  • the testing gage com­prises a leak detector gage which injects air in the container and monitors the pressure within the con­tainer during an inspection interval during which the leak detector gage seals the finish of the con­tainer.
  • such apparatus fur­ther comprises a second reciprocable carriage mem­ber, a second plunger-mounted testing gage, and a second rotating cam, all oriented so as to horizon­tally reciprocate said plunger to move the second testing gage into and out of proximity with the bottom of the container while causing the traversing of the second carriage and carriage-mounted plunger in parallel to the conveyance of the container, wherein the first and second testing gages comprise optical sensors for detecting the presence of checks in the neck and at the bottom of said container, respectively.
  • the vertical and hori­zontal plungers only carry the rollers for engaging the rotating container during the inspection inter­val, and the optical sensor assemblies are mounted to the respective carriages.
  • Figure 1 is a simplified view of the aperture gaging (plug gager) apparatus disclosed in U.S. Patent No. 3,387,704 corresponding to Figure 1 of this patent.
  • the vertical motion of the plunger and plug gage is determined by the motion of the eccentrically mounted bearing roller 23 which is secured to plunger 18 by yoke 29, while the horizontal motion of the carriage 16 rela­tive to the support plate 60 is determined by the motion of cam follower 25 against the periphery of cam 24.
  • Containers to be tested are brought by screw conveyor 54 into position where the necks of the bottles are directly below the plug gage 13 at the time that cam 24 has positioned the carriage 16 at the limit of its rearward movement, and the gage is in its mid-stroke position poised above the neck of the bottle as shown in Figure 1.
  • cam 24 and screw conveyor 54 are rotated in timed relation from a power shaft (not shown)
  • the carriage 16 and the container in the gaging position travel in syn­chronism, and the gage is thrust into the neck of the bottle and then withdrawn during this lateral movement in unison.
  • U.S. Patent No. 3,387,704 for details of the operation of plug gager apparatus 10.
  • Cam 90 includes an extended constant velocity or linear motion portion 95 which commences at the 330° cam follower position and continues until the 210° cam follower position, a total of 240° as compared with 180° in the cam 24 of Figure 2.
  • the remainder 96 of the cam profile, from 210° to 330°, is cycloidal in form, although con­tours of any suitable form designed to minimize shock could be employed.
  • the effect of this exten­ded linear portion 95 of the cam profile is illus­trated in Figure 4B.
  • the plug gage 13 begins to enter the bottle finish at the beginning of the constant velocity portion (eccentric bearing roller position 97), which in this case is at the 330° point, 30° sooner than for the cam 24 of Figure 4A. Similarly, the plug gage exits the bottle at the 210° point (roller position 99), 30° later than in the prior art cam 24 of Figure 4A.
  • the resulting increase in stroke illustrated in Figure 4B equals R sin(30°), where R equals the eccentric offset.
  • the improved cam 90 of the invention provides significant advantages in other types of container inspection apparatus utilizing this carriage mounted cam-plunger arrangement.
  • One such instance is the leak detector apparatus shown in Figure 1 of common­ly assigned U.S. Patent No. 3,496,761, which patent is incorporated herein by reference.
  • the "fluidic finish selector" disclosed in Figure 1 of the '761 patent incorporates a cam 22, eccentrically mounted bearing 26, and cam follower 23 to control the motion of a carriage 8 and plunger tube 12 much as in the plug gager of U.S. Patent No. 3,387,704.
  • a test fitting 13 at the end of plunger tube 12 closes the mouth of the container under test during a por­tion of each cycle in which it is lowered to seal the container finish due to the downward movement of plunger tube 12.
  • the device injects a predetermined volume of air into the container, and at the end of this interval, the pressure within the container is measured to detect the presence of leaks, i.e., whether the pressure falls below a predetermined minimum.
  • an improved cam such as the cam illustrated in Figure 3 hereof, the duration of the inspection interval is increased, increasing the maximum permissible leakage (pressure differential) which could be measured. This improves the sensi­tivity of the fluidic finish selector.
  • a light source assembly to illuminate the finish of the container is mounted to the carriage for the vertical plunger, and a light source to illuminate the bottom of the container is located below the container path.
  • Linear transport of the container through the inspection site is achieved by engaging the container between endless belt 24 and rollers 16; in addition, plunger-mounted rollers 38, 40 engage the bottle finish.
  • container rotation is halted by brake pads 23 which protrude beyond the surface of belt 24.
  • brake pads 23 which protrude beyond the surface of belt 24.

Landscapes

  • Examining Or Testing Airtightness (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
EP88310956A 1987-12-02 1988-11-21 Perfektionierter Mechanismus für eine Prüfvorrichtung von Glasbehältern Withdrawn EP0319180A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12835787A 1987-12-02 1987-12-02
US128357 1987-12-02

Publications (2)

Publication Number Publication Date
EP0319180A2 true EP0319180A2 (de) 1989-06-07
EP0319180A3 EP0319180A3 (de) 1990-03-14

Family

ID=22434951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88310956A Withdrawn EP0319180A3 (de) 1987-12-02 1988-11-21 Perfektionierter Mechanismus für eine Prüfvorrichtung von Glasbehältern

Country Status (5)

Country Link
EP (1) EP0319180A3 (de)
JP (1) JPH01202646A (de)
CN (1) CN1034434A (de)
AU (1) AU2588488A (de)
BR (1) BR8806135A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6871415B2 (en) 2003-07-31 2005-03-29 Owens-Brockway Glass Container Inc. Container plug gauge and method of use
US7387039B1 (en) 2003-08-11 2008-06-17 Owens-Brockway Glass Container Inc. Container finish inspection
CN108787493A (zh) * 2018-08-01 2018-11-13 福州鸿基自动化设备有限公司 四工位工件测漏机
CN112058707A (zh) * 2020-08-26 2020-12-11 张祥飞 一种玻璃预处理装置
CN117703884A (zh) * 2023-12-29 2024-03-15 常熟市亚邦船舶电气有限公司 一种液压***测试设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB736582A (en) * 1951-01-31 1955-09-14 Ruston & Hornsby Ltd Improvements in or relating to cams for actuating the valves of internal combustion engines
US3387704A (en) * 1966-01-11 1968-06-11 Powers Manufacturing Aperture gauging and sorting device
US3541883A (en) * 1969-04-11 1970-11-24 Baird Corp High speed composite cam
US4399916A (en) * 1978-12-28 1983-08-23 The Coca-Cola Company Reject system for in-line pressure testing system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB736582A (en) * 1951-01-31 1955-09-14 Ruston & Hornsby Ltd Improvements in or relating to cams for actuating the valves of internal combustion engines
US3387704A (en) * 1966-01-11 1968-06-11 Powers Manufacturing Aperture gauging and sorting device
US3541883A (en) * 1969-04-11 1970-11-24 Baird Corp High speed composite cam
US4399916A (en) * 1978-12-28 1983-08-23 The Coca-Cola Company Reject system for in-line pressure testing system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6871415B2 (en) 2003-07-31 2005-03-29 Owens-Brockway Glass Container Inc. Container plug gauge and method of use
US7387039B1 (en) 2003-08-11 2008-06-17 Owens-Brockway Glass Container Inc. Container finish inspection
CN108787493A (zh) * 2018-08-01 2018-11-13 福州鸿基自动化设备有限公司 四工位工件测漏机
CN108787493B (zh) * 2018-08-01 2023-10-31 福州鸿基自动化设备有限公司 四工位工件测漏机
CN112058707A (zh) * 2020-08-26 2020-12-11 张祥飞 一种玻璃预处理装置
CN117703884A (zh) * 2023-12-29 2024-03-15 常熟市亚邦船舶电气有限公司 一种液压***测试设备

Also Published As

Publication number Publication date
AU2588488A (en) 1989-06-15
JPH01202646A (ja) 1989-08-15
BR8806135A (pt) 1989-08-15
CN1034434A (zh) 1989-08-02
EP0319180A3 (de) 1990-03-14

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