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Publication numberUS2441525 A
Publication typeGrant
Publication dateMay 11, 1948
Filing dateSep 29, 1943
Priority dateSep 29, 1943
Publication numberUS 2441525 A, US 2441525A, US-A-2441525, US2441525 A, US2441525A
InventorsLawrence G Zesbaugh
Original AssigneeLawrence G Zesbaugh
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Article removing means
US 2441525 A
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Description  (OCR text may contain errors)

y 1, 1948- L. 5. ZESBAUGH 2,441,525

ARTICLE REMOVING MEANS Filed Sept. 29, 1943 2 Sheets-Sheet 1 20 I v a /Z I y I Lnwazr z s gas u After-n25 May 11, 1948. G. Z ESBAUGH ARTICLE REMOVING MEANS Filed Sept. 29, 1943 2 Sheets-Sheet 2 Inventor LnwRENcE GtZESBflUGK B Kai 'q- Att zfiy.

Patented May 11, 1948 UNIT ED V S TATES N T FITCTIEZ' ARTICLE REMOVINGMEANS Lawrence G. Zesbaugh, Minneapolis, Minn. Application September 29, 1943, SerialNo. 504,265-

2 Glaims. (C11 93*36) This 'inventionrelate's to a device for manufac turing threaded. caps or rings and particularly to a device for removing said caps, rings or other threaded articles-from the-die on which they are formed;

While the invention could be applied to many machines it specifically is shown applied to such a machine as disclosed and claimedin applicants co-pendin'g. application S. N. 483,921, filed April 21, 1943.- Insaid'machine a die is shown having a grooved or threadedu'pper end and the article formed thereon'which is illustrated as acap is pressed about said grooved or threaded end of the die so that itis very tightly held thereon. The formed member adheres so tightly to the die that it is not feasible to have the same removed by hand. a

It is an object of this invention to provide a simple and efiicientmeans for removing an article froma die such as a grooved or threaded die about which it has been pressed. A

It-is a further object of the invention to provide a machine for removing an article from a grooved or threaded die, comprising a-member onwhich the die is carried and moved, together with a member or block of frictional material past which the die is movedso that the periphery of the said article engages said blockand said article is given apartial rotation to loosen it on the die.

It is further an object of the invention to provide such a machine as above set forthin which a rotating 'wheelis also used to engage the said article and to rotate said article after it has passed said member or block-to remove it from said die. I a I Itis still another object of theinvention to provide ama'chinefor removing an article from a die having a threaded" upper portion and" on which said article has-been pressed'comprising a wheel having a periphery for frictionally engaging the periphery of said article so as to rotate the same and remove it from the die and means for moving said die past said wheel so that the latter engages said article.

These and other objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying drawings in which like reference characters refer to similar parts throughout the several views and in which:

Fig. 1 is a plan view of the device a portion being shown in horizontal section;

Fig. 2 is a vertical section taken substantially on line 2-2 of Fig. 1 as indicated by the arrow;

2., Figl 31s a vie'wi'n side elevation of the-device; Fig. 41s a horizontal se'ctiontaken substantially on line 44 of Fig; 3' as'indic'a'te'dbythe'arrow and Fig. 5 is a partial view in side elevation. Referring to the drawings a machine isshown comprisinga frame or'hou'sing [0. This housing comprises a front portion" 10a in' which a plate or. turret I I is mounted for rotationab'out' a central vertical'axis. Plate l lhasimountedtliereon in circumferentially'spaced relationaipldralit'y of dies I21 While these dies might bewariously formed; in the embodimentof'tlie invention'illus trated; they are shown as having respectively upper ends i241 on which is formeda; rib'or ribs 121) preferably in the form" of a helix, thusforminga thread? Said-"dies are of the form illustrated in the above entitled: co pendingapplication and the dies on' turret or plate" Ill cooperate with upper dies l'3'carried'on a" plungerl'head' l4 which is reciprocate'd vertically by'a'shaft': l5iand is guided in suitable guides in'i th'e'upp'er portion trated are formed on the" dies and then moved laterally away from the'head' Win a horizontal circular path" as i'n'dicatedbythe arrow in Fig. l'.

In accordance with the present invention a member or block [8 of frictional material'such' as rubber or similar'materialis provided,v the same being heldbetw'een' metarpra'tes l9'an'd 20, Block i8' is generally of rectangular shape in" plan and has one corner which protrudes slightly. Plates) 1 l9-and20 are shaped similarly to block l8'but are' somewhat smaller so thatiblock18 prdje'cts'therebeyond. The block l8 and plates |'9"and 20' are heldin assembled relation by a pluralityof screws 2] which extendtherethrough and also through a small top plate 22'. Lower plate 20 is bent to screws 23.

A wheel 26 is provided, the same being illustrated as having a central annular portion 26a of frictional material such as rubber or similar material which portion is held between and secured to circular plates 26b of smaller diameter. Wheel 26 is secured to a shaft 21 which is journalled in the bearing portion 28a of an arm 28. Arm 28 is shownas in the form of a flat bar and extends diagonally outward and then extends along one side of housing I0 in contact therewith, said bar being secured to housing In by a plural- 3 ity of screws 36 which extend through slots 28b in bar 28. Bar 28 is thus mounted for some longitudinal adjustment. Shaft 21 has secured to its upper end a pulley 3| preferably of the grooved type and said shaft has a nut 32 at its lower end below wheel 26. A belt 33 runs over pulley 3| and also over pulley 34 also preferably of the grooved 7 type. Pulley 34 is secured to a shaft 35 projecting from a speed-reducing device 36 having flange 360. secured by a plurality of screws 31 to one side of an electric motor 38. The driving or armature shaft of the motor extends into and actuates the speed reducing device 36. Motor 38 has a flange 3811 which is secured to bar 28 and thus to housing In by a plurality of screws 39 which preferably extend through slots 38b in flange 38a. A switch box 46 is shown for motor 38 and a conductorcarrying cord 4! extends from switch box 40 and will be connected to some suitable source of current.

Blanks for the articles to be formed such as caps, will be placed upon the dies as they approach the head M. The blanks will be operated upon by the dies and the dies will move away from under the head M with the finished article pressed thereon. When the article such as a cap is thus tightly pressed upon the die it is rather difficult to remove it and it is not feasible to have the caps removed directly by operators. In operation motor 38 will be actuated and this through the gear-reducing mechanism 36 will drive shaft 35 and pulle 34. Wheel 26 will be driven through belt 33 and pulley 3|. With the present invention a die I2 with the article thereon moves with plate I I so that the die moves past the block I8. The inner edge of block I8 is located so that the periphery of the cap or article l6 engages the side of the block and the article is pressed against the block so that a drag is placed on the article tending to rotate it in the direction to move it 01f of the threaded portion l2a. The article is thus loosened on the die and as the article moves along the remote portion of the block it is also engaged by the periphery of the rotating wheel 26. Wheel 26 rotates in a direction to move the article to cause it to move off of the threaded portion [2a of the die. For a short distance the wheel 26 is engaging the article while it is still engaged by block [8 so that there is a joint action of the block and wheel in starting the movement of the article. As the article moves out of engagement with block [8 it is still engaged firmly by wheel 26 and is now rotated at comparatively high speed so that it quickly screws upward oil? of thread |2a and is thrown to one side of plate H by the wheel 26. The article passes into a suitable chute or receptacle (not shown) and is directed to the desired place. The articles formed on the die such as the caps are thus quickly and emciently removed by the machine without the interposition of the operator.

From the above description it will be seen that I have provided quite a simple and very efficient device for removing the articles such as caps from a die upon which they have been pressed. The articles are removed without making any change in their form and are conveniently discharged at one side of the machine. It is thus only necessary for the operator to feed the blanks to the machine. The device has been demonstrated in actual practice and found to be very successful and eificient.

It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the parts, without departing from the scope of applicants invention, which generally stated, consists in a device capable of carrying out the objects above set forth, in the parts and combinations of parts disclosed and defined in the appended claims.

What is claimed is:

1. A device for removing articles from dies having in combination, a rotatable member, a plurality of dies carried by said member and movable therewith, said dies having helical grooves and ribs at their ends about which articles have been pressed, means for rotating said member, a block ofv frictional material past which said dies are moved in the rotation of said member so that one side of said articles successively engage said block and are partially rotated thereby to loosen the same on said dies, and a wheel disposed substantially at an opposite side of said article from that engaged by said block and adapted to successively engage the periphery of said articles in the movement of said member as they are still engaged by said block to assist in loosening said articles and immediately thereafter to separately engage said articles for rotating the same after they have passed said block to remove the same from said dies.

2. A device for removing an article from a die having in combination, a die having a screw thread at its end on which an article has been pressed, means for moving said die horizontally, a member of frictional material past which said die is moved so that said article engages said block, a wheel having a periphery for engaging the periphery of said article positioned at a side substantiall opposite said block and means for rotating said wheel to first cooperate with said member to loosen said article and then to act subsequently to remove said article from said die,




Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2155316 *Aug 18, 1936Apr 18, 1939Lauterbach CorpMachine for molding plastic materials
US2317823 *Dec 22, 1938Apr 27, 1943Stokes Machine CoScrew cap molding machine
GB303112A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2526900 *Nov 26, 1948Oct 24, 1950Peerless Tube CompanyApparatus for removing collapsible tubes from supporting spindles
US2642784 *Apr 6, 1949Jun 23, 1953Nat Paper Bottle Co IncMachine for making paper containers
US2697250 *Sep 10, 1951Dec 21, 1954Armstrong Cork CoMolding machine
US2829409 *Dec 13, 1955Apr 8, 1958Star Expansion Ind CorpDie casting apparatus
US3084387 *Nov 16, 1959Apr 9, 1963Dake CorpMolding apparatus
US3990826 *Mar 6, 1975Nov 9, 1976Paul MarcusInjection blow molding apparatus
US6390800Jun 1, 2000May 21, 2002Unique Mould Makers LimitedApparatus for removing threaded parts from plastic injection molds
U.S. Classification425/436.0RM, 164/344, 29/38.00F, 425/438, 425/DIG.580, 72/427, 74/526
International ClassificationB21D51/50
Cooperative ClassificationB21D51/50, Y10S425/058
European ClassificationB21D51/50