DE1229923B - Machine for cutting out wedge-shaped shoulder pads from rod-shaped foam blocks - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY GERMAN WTWWS PATENTAMT Int. α .:

A41h

EDITORIAL

German KL: 3d-7/00

Number: 1229 923

File number: P 20356 VII a / 3 d

Filing date: March 19, 1958

Opening day: December 8, 1966

The invention relates to a machine for cutting out wedge-shaped shoulder pads from rod-shaped ones Foam blocks, in which the one at the front end of the foam block on a convex Cutting surface working cutting tool after each cut a pivoting movement relative to that of executes foam block advanced backwards step by step on a table, in such a way that alternately One shoulder pad each standing on the tip and then one shoulder pad on the base of the Wedge is cut standing.

The known machines of this type have an endless rotating band knife as a cutting tool. This is rotatably mounted on a swing, the swinging movement being the pivoting movement allows relative to the foam block and the rotary movement is used to make one strand of the band knife to cut through the foam block. The design is complex. The unit output of the machine is low. The danger for the operating personnel is great. All these Disadvantages result essentially from the fact that the considerably heavy band knife assembly on the sheet has to be performed while sitting on the swing at the same time. The individual shoulder pads fall into a collecting container after cutting. Only then do you have to go back to an inexpensive packaging Unity to be merged. The entry of the band knife from the side edges is unfavorable, as the aim is to adjust the shoulder pads on the side edges as much as possible to the material thickness To let zero expire.

The same drawbacks are exhibited by similar machines operating on a convex cutting surface Have cutting tools and, for example, shoulder pads made from an alternately tilted block of felt cut out or arranged behind the band knife, spreading the cut padding Have guide fingers or at the same time on the convex face of the foam block a circumferential form cutter works to immediately cut an edge of the shoulder pad to break.

It is also already known by means of individual pot knives or by means of saw blades driven in an oscillating manner cut out foam padding in a concave cut from the face of a block of material, the wedge shape of the cushions being achieved by alternating the block of material after each Cut is tilted relative to the cutting tool. These machines do not work with a high either Piece output; they also indicate the machine for cutting out

wedge-shaped shoulder pad made of rod-shaped

Foam blocks

Applicant:

Dr. W. Scheermesser & Co. K. G., Linz / Rhine

Disadvantage that the cut shoulder pads fall down individually from the processing position or must be discharged.

Finally, it is also known per se to cut out shoulder pads to use closed double-sided sharpened ring knife, which is mounted between three rollers and is moved by friction drive. This ring knife also works on a concave one again Cut surface. In turn, an abas-cut cushion falls out of the cutting position. the achievable performance of the machine is low; 'The further transport costs of the shoulder pads are high. The machine's moment of danger for the operator is considerable.

For the production of wedge-shaped bodies, it is already known to separate from the front end of a block of material Splicing off wedges with a lowering tool. The material block is rotated alternately, to get the wedge shape, so that the tool alternately from one side and then from enters the block of material on the other side. For producing profiled cushions for mattresses or the like. and also for cutting out corresponding outlines of heel spots, it is already known to use a To deflect bandknife from a guide runner so that it is in the outline shape of the part to be produced runs. The guide runners are arranged on both sides of the band knife and form a channel in which the band knife is running. Finally, it is also known to produce profiled bodies Use a cutting tool, which consists of a heated wire and a semicircular one The bracket forms in a rotational movement within the at different speeds advanced foam block revolves and thereby spherical from the foam block Cuts out the body, with all the rest of the

609 730/1

3 4

lumen of the foam block occurs as a loss. A b b. 4 an enlarged view of the cutting tool, including its storage, and two tools to cut shoulder pads more efficiently and more quickly in the section according to the line AB in Fig. 5, without loss of operation. A b b. 5 is an enlarged view of one side of the

The present invention has the task of 5 knife storage,

posed, a generic machine with simple A b b. 6 shows a section along the line CD dei

Design design so that shoulder pads in A b b. 5,

clean shape and especially for removal A b b. 7 shows a section along the line EF dei

favorable position to each other without loss and with high A b b. 5,

Piece power can be cut out. Fig. 8 is a top view of the foam block

This is achieved according to the invention in that with several already cut and from the loading

the material feed in the back of the bracket opening rich of the knife pushed shoulder pads,

a bow-shaped, transversely to its Auf- A b b. 9 shows a section along the line GH dei

and downward movement in the horizontal direction and Fig. 8.

moved back cutting tool takes place, which 15 on the machine frame 1 sits the pivot its up and down movement through one of the frames 2 in the bearing blocks 3. Its swivel bracket shape corresponding movement between two table movements is effected by a control lever 4, share located slot in a via the cutter which cooperates with a control cam 4 ', tool extended table for feed. The control cam 4 'sits on the inside on the disc 5, the cut cushion passes through and which is driven by a motor 6. the - As is known per se - a double-sided grind swivel movement of the swivel frame 2 is through fenes, oscillating driven band knife limited to the stops 7 and 8. A spring 9 pulls shows. the control lever 4 always so that the swing frame 2

An advantageous design consists of the invention with the stop 8 is in contact. From this

according to the fact that the cutting tool is in both positions, it is in each case by the control cam 4 '

is stored on the side of the guide table. pushed out when this control cam 4 'against

As a result of this embodiment, a very advantageous control lever 4 runs.

Adhesive machine for cutting out shoulder pads The frame padding sits on the swivel frame 2 created. The machine works slide 10 by virtue of the bearing rollers 11 and 12, the In the continuous process: are pulled together 3 ° from one side by the spring 13. the the block of material in the rear bracket guide rods 14 stabilize the storage of the opening of the cutting tool pushed in; on frame slide 10 on the swing frame 2, so that extends beyond the cutting tool, so that this frame slide ends properly Table, the individual cut at least 10 on the swivel frame 2 is guaranteed. Shoulder pads lying one behind the other in the form of a 35 This sliding takes place through the crank drive 15, Rod pushed further. This rod of cut 15 ', 15 "of the one coupled to the shaft 16 of the disc 5 Shoulder pads can be pelt in each case.

th length removed and transported further or on the frame slide 10 sits the runner 17 of the

be packed. It was found that even the cutting tool. This slides on this runner 17

The first cut shoulder pad does not fall over, which is what the 40 bandknife 18 sharpened on both sides does

The cut upholstery is lined up to form a sliding movement is guided by two guide bolts

Would prevent rod. It has also been found that zen 19 penetrate through longitudinal slots 20 of knife 18

that the shape of the shoulder pads allows one to pass through.

very large number of one behind the other at its ends, the knife 18 is approximately Shoulder pads in the form of a rod from the backward 45 parallel to the frame slide 10 extending Streschieb. The special movement of the cutting units 21 is connected to the storage tool on one side is beneficial. The cutting tool always occurs 22 coupled to the frame slide 10 into the material block from above or below. There are and those on the other side with a cross can be achieved in that the cutting unit struts 23 are rigidly connected. This cross brace 23 The shoulder pad always comes from the base of the 50 and is mounted on its center 24. She is on the side of this one Wedge cuts so that a slim storage with an eccentric drive 25 of a self-running of the material at the top of the wedge achieved digen Mowerden sitting on the frame slide 10 can. Also coupled to the side edges of the shoulder gate 26. Pivots by virtue of this clutch pad can be a good inflow of the material, the cross strut 23 when running the motor 26 to their to achieve the material thickness »zero«. The piece 55 storage point 24.

The machine's performance is extremely high. This pivoting movement leads to a back and forth Scrap is small and essentially only on the forward or forward and backward sliding zone of the cut at the straight front end of a movement of the knife 18 on the cutting tool Blockes limited. buy 17.

The object of the present invention is in 60 On the machine frame 1 sits the guide

the drawing in an exemplary embodiment, which is with its part 27 on the one hand and with

represents. It shows its part 28 on the other hand of the cutting tool

A b b. Figure 1 is a side view of the machine in which it extends. Between the parts 27 and 28 is a

Downward movement of the knife, slot 29 provided in its shape and thickness

A b b. 2 shows a side view of the machine in which 65 corresponds approximately to the cutting tool, that is to say to FIG

Upward movement of the knife,. Cutting tool allowed the passage.

A b b. 3 is a partial plan view of the ma- In the guide table part 27 are embedded and

machine, protruding slightly above its surface

Transport chains 30, which advance the foam block 31 step by step, taking advantage of the static friction. The incremental advancement of the chains 30 is carried out by a, not shown, with the Chain drive wheel 32 coupled feed drive.

The static friction of the foam block 31 on the transport chains 30 is used to guarantee a safe advance is supported by the pressure rollers 33.

At the end facing the cutting tool, the guide table part 27 has a dimension of the Foam block adapted guide box 34. This guide box supports the support of the Foam blocks during the cutting process.

The width of the frame slide 10 and the swivel frame 2 are greater than the width of the Guide table in the area of the cutting tool, so that the bearings and drive means for the Cutting tool lie to the side of the guide table.

The cutting tool is convex in the feed direction. By virtue of this bulge and by virtue of it the lateral mounting of the cutting tool, this occurs evenly from the side surfaces of the in his Spread out the foam block 31 corresponding to the guide table. So there is a Section, the inner surface of which protrudes continuously from the side surfaces of the foam block. The thickness of the shoulder pad that has been cut out after the respective step-by-step feed therefore starts to run the page margins continuously to the value zero.

The knife 18 is interchangeably connected to its actuating and supporting elements. To this Purpose bolts 35 are provided, which sit on springs 36 and through longitudinal slots 37 in the rear Pass the end of the knife 18. The presence of longitudinal slots allows the tension of the knife 18 by a spring 38, so that a good sliding of the knife 18 on the cutting tool runner 17 is guaranteed.

The mode of operation of the device is as follows: By switching on the motor 26, this becomes double-sided sharpened bandknife 18 set in oscillating motion.

By switching on the motor 6, the frame slide 10, the swing frame 2 and the feed the transport chains 30 put into operation.

From the in A b b. The position shown in FIG. 1 moves the one equipped with the oscillating knife 18 Cutting tool in the direction of the machine frame 1 downwards. With this movement the knife 18 cuts a shoulder pad 39 from the advanced foam block 31. That After exiting the foam block, the knife occurs through the slot 29 between the guide table parts 27, 28 through. The frame slide 10 is in the lower position on the Swivel frame 2, this frame swivels. He takes the position according to A b b. 2 a.

The frame slide 10 slides back up on the swivel frame 2. In the meantime it is Foam block 31 advanced by a certain amount adapted to the thickness of the shoulder pad been. The cutting tool passes through slot 29 and into the bottom of the Foam blocks 31 a. The knife 18 again cuts a shoulder pad 39 from the foam block 31 off.

Both the shoulder pad 39 cut out during the downward stroke of the cutting tool and the shoulder pad 39 cut out during this upward stroke stands on part 28 of the guide table.

It is in each case carried out by the advance of the foam block when the cutting tool has emerged pushed forward through this foam block.

This way of working results in the A b b. 8 and 9 product shown. On the guide table part 27, the foam block 31 is always advanced. On the other hand, on the guide table part 28 the individual shoulder pads 39 resting against one another are advanced. This advance takes place due to the curved design of the individual cushions 39 so straight that the finished cut cushions after passing through the entire Foam blocks 31 by the machine in a similar block shape on the guide table part 28 lie, as before the foam block 31 on the guide table part 27. You can even in this Block shape can be removed.

Claims (2)

Patent claims: 1. Machine for cutting out wedge-shaped shoulder pads from rod-shaped foam blocks, in which the one at the end of the foam block on a convex cut surface working cutting tool a pivoting movement relative to the after each cut executes a block of foam, which is pushed forward step by step on a table from backwards, in such a way, that alternately one shoulder pad each standing on the tip and then one shoulder pad on the base surface of the wedge standing, is cut, characterized in that the Material feed into the rear bracket opening of a bracket-shaped, transversely to his Up and down movement of the cutting tool moved back and forth in the horizontal direction (17, 18) takes place, which during its up and down movement by one of the bow shape corresponding, between two guide table parts (27, 28) located slot (29) passes and which - as is known per se - is a double-sided, oscillating driven one Has band knife (18). 2. Machine according to claim 1, characterized in that the cutting tool (17, 18) is mounted on both sides of the guide table parts (27, 28). Considered publications:
German Patent No. 930,385;
German utility model No. 1613 257,
436, 1716 521, 1758 614, 1760 690;
British Patent No. 782,542;
French Patent No. 1156 825;
U.S. Patent Nos. 936,744, 1129,686. For this purpose 2 sheets of drawings 609 730 / 111.66 © Bundesdruckerei Berlin