DE254899C - - Google Patents

Description

IMPERIAL

PATENT OFFICE

The present invention relates to a machine for cutting out strips attached to fabric Longitudinal embroidery by means of a back and forth, arranged at an angle to the fabric ribbon-shaped knife, which is immediately above the embroidered or sewn edge of the fabric and cuts along the edge.

The machine is characterized by a fabric feeding device, which consists of two automatically opening and closing, moving in opposite directions to each other There are pliers, which allows a smooth and uninterrupted movement of the fabric towards the cutting device will.

In the accompanying drawing, the subject matter of the invention is illustrated by an exemplary embodiment.
Fig. Ι is a top view of the machine.

Fig. 2 is a front view thereof.

Fig. 3 shows a side view while

Fig. 4 shows a cross section along the line aa in Fig. Ι.

Fig. 5 is an enlarged perspective view of the new cloth feeding device.

Fig. 6 is a side view of the device shown in Fig. 5 while

FIG. 7 shows a section along the line bb in FIG.

Fig. 8 is a front view of a rotatable gripper jaw associated with the feeder.

On the frame walls 1 (Fig. 3) rests the table top 2 on which the working parts are arranged appropriately. The embroidered fabric strip is made from a storage box 4, which contains laterally adjustable guide plates 105 ″ to separate the embroidered edge over the upper table top 3 (Fig. 4 and 5) by means of a known conveyor device pushed under tension to a cutting device. The conveyor device consists of as is known, from two juxtaposed conveyor feet 81 (Fig. 4), which alternately lifted up from the worktop, then pushed forward while taking the length of fabric with it, at the end of the feed movement is pulled down onto the rails 104 and onto this into the Starting position can be returned, with the fabric web from above by means of the adjustable Press foot 96 is pressed against the conveyor feet 81.

As is known, the cutting device consists of the one working in the horizontal direction Cutting blade 8, which is pulled off by friction rollers 40 and 41 from a drum 10 and uninterrupted by a guide and moving back and forth on the table top 3 Protective device 7 is moved through (Fig. 2 and 3). The back and forth oblique movement the guide and protection device 7 is by means of the eccentric rod 15 of the on the Shaft 17 attached eccentric 16 causes the sliding surfaces are spherical; the shaft 17 carries at the end a pulley 19, the

Claims (2)

driven by the belt 18. So that the guidance and protection device cannot lift off the table 3, there is one consisting of a roller η ^α on the holding arm 8 ^a ■ 5 hold-down device provided. The new device for uninterrupted feeding of the fabric from the box 4 after the cutting device has the following facility. On shaft 17 are Eccentric 116 arranged by means of the push rod 117 the lever 118 in a swinging motion to displace their tenons 119; these pivot pins are in those resting on the plate 2 Bearings 120 attached. At its free end is each lever 118 with the two Link rods 122 and 122 "connected. These are in turn articulated at their free ends to sliders 123 and 124, which are located on the guide rail arranged vertically between the table tops 2 and 3 125 can move up and down. A rod 126 is attached to the guide rails 125, which carries slide bushings 127 lockable by means of thumb screws 128; the setting of the sliding bushes depends on the width of the embroidered fabric strip. At the The guide rods 129 are seated above and below the slide bushing 127 (FIGS. 5 to 7). The sliders 123 and 124 carry laterally hubs 130 with the rods 131 and 132, which in turn hold the jaws 133 and 134, respectively. These pliers jaws are in a vertical direction by means of the guide parts 135 seated on the jaw plates 136 on the guide rods 129 out, so that a lateral displacement of the jaws is impossible. With the Pincer jaws 133 and 134 work together movable jaws 139 that wrap around the pins 138 rotate and, like their counter-jaws, are corrugated in order to secure the material web grasp. Instead of the corrugation, any other frictional resistance can also be used Means such as rubber can be used. Each movable jaw 139 points beyond the Trunnion 138 has a fairly long lever-like extension 141, which is used to open the Baking is used. Usually the jaws 133, 139 and 134, 139 are spring-loaded 140 held closed, which are each attached between the movable and fixed jaws (Fig. 8). The spring action can only be achieved by pressing the lever-like extensions 141 To get picked up. . At the top and bottom of the fixed sleeves 127, vertical extension pieces 142 are provided, to which the support heads 143 and 144 are screwed. In these heads are the little ones Levers 145, which cause the jaws 139 to open, housed (Fig. 7). The levers 145 wear at their front ends 146 wide strips that extend against the extensions 141 of the the movable pliers jaws 139. The rear end 147 of each lever 145 becomes by the coil spring 149, which sits in a recess of the head 143 or 144, against the set screw 148 is pressed. If the lever 118 is rotated forwards in the direction of the arrow (FIG. 5) by the eccentric 116, the sliders 123 and 124 move up and down on the guide rail 125 in opposite directions; The tongs 133, 139 and 134, 139 located on the rods 131 and 132 take part in these movements, the first going up and the second going down. The upward-going pliers hold the web of fabric firmly clamped between its jaws, while the downward-going pliers hold its open jaws out of engagement with the fabric. A reversal in this occurs when the sliders 123 and 124 and thus also the tongs 133, 139 and 134, 139 are moved towards one another. The extension 141 of the jaw 139 rotates the lever 145 touching it about its axis of rotation 145 ″ until it is attached to the extension 141 evades and is brought back to rest against the adjusting screw 148 by the spring; in that the projection 148 is pressed against the extension 141 of the jaw opens the jaws 139. This happens when the clamp has reached its highest position and want to turn back. The lever 145 holds the downward clamp open; in the In the lowest position, the lever jumps over the extension 141, and the spring 140 closes the Jaws 139. If the clamp 133 is closed, the clamp 134 is open, and vice versa. Of course, a similar device for removing the substance from the Machine to be mounted on its back; this would have to work just like that as before. In the present embodiment, the machine is capable of only a single embroidery border to separate. Of course, the cutting devices along with their new Substance feeding devices can be arranged in large numbers on a machine, so that several braids can be cut off at the same time. Godfather τ-An Proverbs: i. Machine for cutting out longitudinal embroidery on strips of fabric by means of a knife that goes back and forth and is arranged at an angle to the length of fabric which moves the length of fabric evenly and automatically, characterized by a .Fördervorrichtung, which consists of two automatically opening and closing, in opposite direction to each other moving tongs. 2. Machine according to claim i, characterized in that the gripper jaws (133 and 134) rotatably arranged jaws (139) extended extensions (141) have, which are operated by the lever (145) that when the pliers Move in the direction of fabric movement, the two associated jaws (133,139 and 134, 139) by means of the Compresses springs (140), but held them apart in the opposite direction will. 1 sheet of drawings,