US2212776A - Movable carrier for winding bobbins in winding frames - Google Patents

Description

E. HAMEL 2,212,776

Filed May 4, 1938 2 Sheets-Sheet l 3 u E a a 1. w W llllll 11 11 i Q I 1111 1m| 1 2% 1 H 1 In 1 11 .M m I 1% W .11 H m 1 VFRPHZF I \w I I Q1 2i E m Q Q N 111 Kw Q a N NI\ 5 v 1 1 n w m H Aug. 27, 1940.

MOVABLE CARRIER FOR WINDING BOBBINS IN WINDING FRAMES In V6 1) for: 5 'mel AhOrneyS- HHIII Aug. 27, 1940. HAMEL 2,212,776

MOVABLE CARRIER FOR WINDING BOBBINS IN WINDING FRAMES Filed May 4, 1938 2 Sheets-Sheet 2 Fig 5,

5. flaml I n remor:

Patented Aug. 27, 1940 PATENT OFFICE MOVABLE Edmund Hamel,

CARRIER FOR WINDING BOBBINS IN WINDING FRAMES Siegmar-Schonau, near Chemnitz, Germany Application May 4, 1938, Serial No. 206,074 In Germany September 4, 1936 2 Claims.

This invention relates to a movable carrier for the winding bobbins in winding frames, which is provided with laterally displaceable holding arms.

Bobbin carriers of this type are employed in 5 winding frames in which the winding bobbin is rotated by a driven friction roll or the circumference of a split or grooveddrum which guides the thread. After completion of winding the bobbin is moved upwardly to interrupt further rotation and thereby further drawing of yarn.

This upward motion of the bobbin is effected by means of the carrier the holding arms of which are then moved sideways to release the bobbin and to permit its removal.

This method is bothersome and requires much time, as always both hands are needed for carrying out the operations mentioned and, moreover, some skill is necessary for properly performing the three functions which make up the exchange operation.

The object of the invention is to facilitate the exchange of the fully wound bobbins in a winding frame having a movable carrier of the kind mentioned and to connect the exchange operation with the interruption of rotation of the bobbins due to the raising of the carrier.

The invention attains its object by causing the laterally movable holding arms of the carrier, by means of a peg-like projection provided on each arm, to be brought into contact with a stationary campath portion through elastic force or weighted pull, the cam path being provided with inclined surfaces in such manner that when the carrier is moved into exchange position the holding arms are moved away from the bobbin.

The upward motion of the carrier releases therefore the full bobbins which either drop into a channel or may be removed by hand. When the carrier is swung back into original position, the newly inserted tubes are caught again and secured.

By way of example, the invention is illustrated in the accompanying drawings, in which Figure 1 is a front view of the device, in which the bobbin is started by a roll connected with the bearing pin and driven through frictional contact with another roll; Fig. 2, a plan of Fig. 1 with the operating position indicated by solid lines and the exchange position by dotted lines; Fig. 3, a view of a modified'construction, in which the bobbin rests on the circumference of a roller or split drum and is driven thereby; and Fig. 4, a front view of the device shown in Fig. 3.

As shown in Fig. 1, the bobbin is rotated by a roll 2 connected with the bearing pin and driven by a driving roll. The bobbin is held by the pins 3 of the movable arms 4 which are arranged on the shaft 5. The arms 4 are provided with long pins 6 and drawn toward each other by a spring I, so that the points 6' of the long pins 6 owing 5 to the pull of the spring I lie against the opposite sides of a cam 8. The pins 6 are slidable in guides l0 fixed to a carrier l I, the latter being mounted on the shaft 5 and held against axial displacement thereon by collars l2. The medial portion 10 of the carrier II is movable in an acuate slot l3 formed in the cam 8 so as to permit limited relative rotary movement between said cam and the carrier II. The inclined faces 8' of the cam are disposed between the raised portion 8" and the 15 portions of less height. In the position show in full lines in Figs. 1 and 2, the spring I draws the arms 4 toward one another and the pins 3' operatively support the bobbin i.

When the carrier is turned relative to the cam, the pin ends 6' slide from the low surface 8 over to the high surface 8", whereby, according to the xtent of the turning motion of the carrier, the pins 3 are withdrawn and the bobbin I is released. 5

In the example shown in Figs. 1 and 2 both holding arms are movable, though it is possible of course to render only one arm movable and still to attain the same effect if the cam path is correspondingly altered. Such an arrangement is shown in Figures 3 and 4 in which a bobbin la is supported on pins 30. attached to arms do. One of the arms 4a is rigidly attached to the carrier 1 la whereas the other arm 4a is slidable, the pin 6a thereof being normally urged by a spring la 35 tending to draw the arms together into operative positions. A guide pin I5 is provided on the slidable arm and. is slidable in the carrier Ila. The terminal 60!. of the pin 6a engages the low surface of the cam 8a but during relative rota- 40 tion of the cam and carrier, the pin 6a moves along the inclined cam surface 8a and engages the raised portion 80," thereby separating the arms 4a and permitting removal of the bobbin la.

I claim:

1. A carrier for winding bobbins in winding frames comprising a pair of bobbin holding arms mounted to swing simultaneously about a common axis and movable relative to each other, projections on said arms, a double cam coacting with said projections and adapted during relative rotational movement of the cam and arms, to cause said arms to move apart, and means normally tending to draw said arms together.

2. A carrier for winding bobbins in winding displacement thereof parallel to said axis during swinging movement of the arms about said support, and means normally urging said arm in one direction.

EDMUND HAMEL,

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