DE1279632B - Device for feeding screw-shaped binding wires to assembly machines for spring bodies - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

B21f

DeutscheKI .: 7d -27/16

Number: 1279 632

File number: P 12 79 632.6-14 (U 8921)

Filing date: March 2, 1960

Opening day: October 10, 1968

The invention relates to a device for feeding in individual helical binding wires to assembly machines for spring bodies from a storage container, in which to convey the binding wires three rotatable rollers are provided, the longitudinal axes of which are parallel in the longitudinal direction of the storage container run and seen in cross section the corner points of a triangle standing on top form, wherein one roller is rotatable about a fixed axis and the other two rollers on one pivotable fork are rotatably mounted, and at least one of the rollers can be driven and one has an annular ridge or an annular groove extending over the entire circumference.

In a known device of this type, a helical binding wire must be manually inserted into the Conveyor space can be introduced between the three rollers. This requires constant monitoring by an operator. Automatic operation is not possible.

It is also a device with a reservoir for holding a number of helical ones Known binding wires. This reservoir consists of a top and at least one box open to an end wall. The pre-made binding wires are in this box and must be from Hand can be pulled out of the storage container and threaded into the machine. The other one Feed then takes place through the feed roller arrangement. Also in connection with such Storage container, the device is only suitable for manual operation. The conveyance of the binding wire from the reservoir takes place through the roller arrangement of the assembly machine for spring bodies independently, but there is a risk that the binding wire that has just been conveyed will be with the others The binding wires located in the storage container are jammed. The operator must remove the reservoir constantly monitor so that the only at its end by the roller assembly of the assembly machine The twisted binding wire does not take along other binding wires that are still at rest. The turning of the helical binding wire exclusively at the front end by the assembly machine has the slightest misalignment of the binding wire screw or any occurring Resistance due to the occurring torsions to beat the binding wire in the storage container Episode.

The invention is based on the object of addressing the disadvantages inherent in the known devices and avoid using a device that

Device for feeding helical binding wires to assembly machines
for spring bodies

Applicant:

The United States Bedding Company,

St. Paul, Minn. (V. St. A.)

Representative:

Dipl.-Ing. H. Görtz, patent attorney,

6000 Frankfurt, Schneckenhofstr. 27

Named as inventor:

Richard A. Fisher,

North Minneapolis, Minn. (V. St. A.)

Claimed priority:

V. St. ν. America March 2, 1959 (796 647)

to design the type mentioned in such a way that it is suitable for automatic operation, i. i.e. that binding wires can be automatically isolated in the storage container and fed to the assembly machine.

This object is achieved according to the invention in that the cross-section of the substantially V-shaped, downwardly tapering and upwardly open storage containers between the rollers than in cross-section U-shaped channel is formed and has recesses in the side walls and in the bottom, through which the rollers reach.

The inventive design has the advantage that there is always only one helical Binding wire is conveyed to the assembly machine for spring bodies and the remaining, in the storage container The binding wires located are kept free from the binding wire that has just been conveyed. A mutual one Entanglement of the binding wires is eliminated. When a binding wire runs the rollers of the reservoir has left and is now promoted solely by the conveyor of the assembly machine is, another binding wire falls by itself into the channel with a U-shaped cross-section and reaches the renewed swiveling of the two-roller bearing Gabei into the operating position with the three rollers in Engagement, causing it to rotate and advance axially. By rotating the

809 620/58

Claims (1)

3 4 now grasped by the rollers binding wire binding wires 32 in an interlocking position in the screw Any further binding wire screw containers and some in the channel 152. ben in the area of the channel out of engagement with the The walls of the channel 152 or of the container are conveyed away brought new binding wire screw. sen recesses 153 through which three rollers This is thus automatically separated into the 5 154, 155 and 156 assembly machine with its peripheral surfaces introduced without taking any action. The roller 154 has a stationary axis additional handle mounted freely rotatable by the operator. The other two rollers 155 requirement. and 156 are drive rollers and are attached to a pivot 160 in front of a pin 160 by means of bearings 158 that the center-to-center spacing of the rollers is rotatably mounted in the fork 157 which is mounted in it. By means of a are adjustable and that at least one of the pressure medium motor, not shown, can be the fork pivotable fork-mounted rollers by a 157 via a rod 162 from the dash-dotted darbiegsame Shaft is driven. This can be used to put the rest position in the solid lines an adaptation to the respective diameter of the operating position shown can be pivoted. the Reach binding wire screws. 15 drive rollers 155 and 156 are In the drawing, an exemplary embodiment of the drive shaft 164 is driven. Subject of the invention shown schematically. Rollers 154, 155 and 156 preferably have It shows rubber surfaces or those that have sufficient F i g. 1 is a schematic front view of the Mon friction with the helical binding wires day machine for spring body, so create 32. F i g. Fig. 2 is a plan view of a tied together with binding wires in Fig. 1 shown in solid lines The spring body package, the drive or working position of the fork 157 are shown in FIG. 3 Tie two rows of springs together - three rollers, based on the respective diameter the helical binding wire, the helical binding wires 32 very precisely Fig. 4 is a section through the reservoir with 35 such center distances that just a screwing Conveyor rollers, shaped binding wire 32 is detected by the rollers. F i g. 5 a section through the storage container After the fork 157 is in the operating position according to FIG. 4. Has been pivoted, all binding wires 32 are made of two storage containers 140 and 142 with the exception of a single wire screw from the screw-shaped Binding wires 32 each brought out in cooperation with the three rollers, Ren and a lower feed hopper 170 of at least one of the rollers has one over Assembly machine 40, 42, 44 supplied to the. with the entire circumference extending, annular by means of pillars 388 liftable upper part and a matching web or an annular groove, whereby securing, having at a distance lower part. It is placed in between that the binding ash grasped by the rollers The upper part and the lower part become rows 28 35 wire screw 32 as they rotate, also in axiavon Springs 12 is inserted and promoted in each case in their ler direction. Since only this one binding upper and lower end turns is rotated by means of the wire screw from the rollers helical binding wires 32 to form a spring - all the others located in the storage container body 10 connected. The helical tie-tie-wire screws kept from getting in the way of the wires 32 are then automatically hooked onto the 40 currently conveyed binding wire screw, Cut to the exact length and with eyelets at the ends 34 provided. Separation of the binding wire screws. The two storage containers 140, 142 are also when the screw de-icing conveyed in the channel 152 adjustable in height columns 146 on the shaped binding wire 32 of the not shown Level of introduction funnel 170 brought. The 45 conveyor organ of the assembly machine of the spring body Storage containers 140, 142 can, as has been detected in FIG. 2 and the rear end of the frost line-dotted line is indicated, the groove 152 vertically transversely to the feed line-directed binding wire screw 32 the rows of springs are arranged. Especially let comes after an automatically controllable advantageous because it saves space, but the one with lowering it into the rest position and a new one The arrangement of the supply 5 <> Pivoting the fork 157 into the operating position of a container in a direction perpendicular thereto. Here all new binding wire screws 32 are in contact with the However, guide tubes 144 are required for the three screw rollers 154, 155 and 156. Ben-shaped binding wires 32 at right angles into the center-to-center distances of the three rollers are adjustment guide funnels 170 divert into it. bar to create helical binding wires 32 with un- The storage container 140 or 142 has to take into account essentially 55 different diameters, borrowed V-shaped. One leg 148 of the V is extended to facilitate loading of the container with helical binding wires 32. At the lower end of the V-shaped container 1. Device for supplying individual ^{items, a} channel 60 with a U-shaped cross section and screw-shaped binding wires for assembly 152 with base 150 is connected. The channel 152 extends machine for spring body from a supply over the entire length of the container 140 or 142. container, in which to convey the binding wires Fit the container in parallel in the longitudinal direction of the storage container. The width of the channel 152, and the corner measurements seen in cross section, is such that it can accommodate at least one helical point of a triangle of binding wire 32 standing on its tip. As shown in FIG. 4, with one roller moving around a stationary one, there is a number of helical shafts that can be rotated and the other two rollers are rotatably mounted on a pivotable fork and at least one of the rollers can be driven and has an annular web extending over the entire circumference or an annular groove, characterized in that the cross-sectionally substantially V-shaped, downwardly tapering and open at the top Storage container (140) between the rollers (154 to 156) is formed as a cross-sectionally U-shaped or box-shaped channel (152) and has recesses (153) in the side walls and in the bottom through which the rollers (154 to 156) reach . 2. Apparatus according to claim 1, characterized in that the center distances of the rollers (154 to 156) are adjustable. 3. Apparatus according to claim 1, characterized in that at least one of the rollers (155, 156) mounted on the pivotable fork (157) can be driven by a flexible roller (164) . Considered publications:
German Patent Nos. 354148, 892133;
U.S. Patents Nos. 1656 204, 2 275 209,
2708461, 2788119. 1 sheet of drawings 809 620/58 9.68 0 Bundesdruckerei Berlin