DE1196097B - Method for pinching shoe ends - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

A43d

German class: 71c-25/02

Number:
File number:
Registration date:
Display day:

K 42282 VII a / 71 c
March 5, 1959
July 1, 1965

t Authority j

The invention relates to a method for pinching shoe ends by means of fast binding Adhesive in which the upper part material is attached to a last carrying an insole and the latter is arranged in such a way that the fire sole surface is above the ground level of the end of the last spanning open slip, then the binding margin is moved outwards and against the Slider clamped and the bar is lowered while the edge remains clamped out, to bring the insole surface below the slip-on level so that the upper part material is effective is stretched, and in which the spread out edge of the upper part material finally over the insole is pivoted inward.

The invention is essentially based on the object of stretching the upper part material relatively to prepare the insole in a position suitable for receiving adhesive so that the The binding margin can be quickly put down when applying adhesive over the applied adhesive can to take advantage of its fast binding property.

The use of quick-setting adhesives in shoe manufacturing is in and of itself known. However, this is the application of glue with a continuous turning causing or working winder, which is sent to the operator with regard to the Experience and skill make high demands. Such adhesives could therefore up to now not usable for modern, largely automatic pinching processes to the extent that is due to them be made.

Furthermore, a device has become known in which the tip of the shoe is to be pinched with glue. However, this is a winder for turning the binding edge of the upper part material inwards over the marginal edges of the insole to prevent the clinging between the already with the adhesive covered binding edge of the upper part material and that at the time previously with the To bring about an insole tacking edge provided with an adhesive layer. When operating this machine, only with prior application of the adhesive layer to the binding edge of the upper part material and / or the stitching edge of the insole are pinched open; in this case it is not possible to use the adhesive roughly in bring in the angle between the stitching edge of the upper part material and the stitching edge of the insole, because they are used to hold the spread out binding margin in engagement with the pinch scissors Method for pinching shoe ends

Applicant:

Campex Research and Trading Corporation,

Zug (Switzerland)

Representative:

Dr.-Ing. V. Hartmann, patent attorney,

Berlin 12, Weimarer Str. 2

Named as inventor:

Jacob Simon Kamborian, West Newton, Mass.

(V. St. A.)

Claimed priority:
V. St. v. America September 22, 1958
(762 600).

Clamping plate comes to lie over the underside of the last during the gusseting process. These known device therefore does not allow the fast-binding property of the adhesive to be used close.

Furthermore, it is known, for example, for applying adhesive in the manufacture of shoes, a Use a spray or atomizer gun. The jet consisting of compressed air should not only be used act as an atomizing agent, but also an air dust barrier when bouncing back from the upper part material which prevent the adhesive from flowing back over the edge part of the insole target. Such a spray gun is therefore neither intended for depositing a fast-setting adhesive still suitable, especially since the adhesive, which atomizes under the action of air pressure, prematurely would bind and dry and put it in appropriate places between the shell material and the stitching edge of the insole is not possible at all.

It is also known, for example, to stiffen the binding edge by means of a material that stiffens the upper part To soak the substance that is inserted between the stitching edge and the insole. With this well-known The edge of the upper part material is thus set up by means of a stiffening material, namely stiffened by the fact that in the holes

509 598/65

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placed in the edge of the upper part material under the wire and in friction contact with the slide-over joint des will hold when the upper part material is pushed over, with the edge of the insole for The pressure generated by the nippers causes a shoe application of glue to be driven onto it completely free-stiff. Thus it is a matter of being placed

in relation to the subject matter of the invention in principle 5 F i g. 6 in a vertical longitudinal section through the

Another method in which the upper part material strips of one of the auxiliary clamping devices are first

edge with a shoe stiffening material lifted from the slip-ons before the dashed lines

bringing the shell material into the and then in full lines, as it is the outward

Winding machine is enriched. the pinch edge laid down on the slip-

The initially an- io on which the invention is based,

given object is according to the invention in contrast. 7 in top view, the last in the lower part of the acquaintance is solved in that the adhesive-pressed position, in which the surface of the fuel in the angle between, the upper part material sole is essentially in the plane of the lower and the exposed edge of the insole after the side of the slider is located and is carried through the front lowering of the last and immediately in front of the over- 15 part clamp and the heel clamps, slide the binding edge in and bring the handle so that the last is pivoted sideways back and forth onto the edge covered with the adhesive Can become fire,
sole edge is pushed over quickly. F i g. 8 in vertical section the application of a

The invention thus allows the Aufzwickvor- adhesive tape by means of an application nozzle along the

to design gears and the properties or 20 exposed edge of the insole in the area of the

the behavior of the fast-setting adhesive is so great,

to adapt widely that the turning at the stitching edge Fig. 9 in a vertical section with Aus and the uniform stretching on the whole break point between the ends of the heel clamp enables the heel stretch around the shoe end around the end of the last in engagement and the adhesive can be applied comfortably over the edge of the insole without binding prematurely and therefore fully fulfills its task as moving the slide-in, inwardly curved, fast-binding agent. Anything up to the pinch edge with the pinch edge partially tightened under the work and now required for the setting of the adhesive clamping devices,
Keeping the binding margin under pressure after the over- F i g. 10 in a vertical longitudinal section of a pushing for a considerable time is omitted 30 shoe, the insole of which has a sewing rib, so that the upper part material does not suffer any loss of tension against which the pinch edge is applied, especially since the adhesive does not have any that he can experience subsequent creep strain on the inside of the rib. supports

In the following, the invention is to be shown in greater detail with reference to FIG. 11, a diagram of the upper part according to FIG

of the drawing are described, which show the 35 Fig. 10, the inner surface of which in the edge part with a

the successive process steps - stiffening agent is soaked,

light. It shows F i g. 12 in plan view the application of the invention

F i g. 1 shows a diagram of a shoe upper and the method carried out according to the side-

an insole, which is on a floor facing as the tip pinch with the help of a device

upwardly directed strips are combined, with the 40 device for ironing the edge after its down-

Cover the edge of the upper part with the pull-over pins.

going attached, the toe end of the whole between- In the practical embodiment of the invention, it is usual to see the tip end of a shoe upper part according to FIG. 1, sliders is arranged and the working equipment that interacts with the over- that consists of a bar L and a fire edge temporarily attached to it with the help of slides when grasping and stretching the Zwick pins 12 are in the sole and in a starting position in a conventional overtaking machine are located, consists of the upper leather stretched over the last

F i g. 2 a corresponding position, up to which the tools are connected upwards, backwards, downwards and temporarily by pulling pins 16 and 16 α to the insole, have moved outwards between the open ones, so that they have inserted the front 5 ° slide-over 18 of a winder, Overturning pin removed, the lasting edge outwards, in which the last is arranged with its bottom placed upwards and pressed downwards against the slide in such a position that the insole is in a plane above the

F i g. 3 is located in a corresponding view between the lower surface of the slide and for a

Auxiliary clamping devices arranged in the working devices, 55 limited sideways movement of the heel part in

which lie against the slide and the horizontal level opposite the tip end

clamp the edge part turned downwards to it, can be moved by a clamping device,

F i g. 4 in a vertical partial longitudinal section of the one tip support 20, one hold-down device 24 and Last the slide and which in its longitudinal a heel clamp 22 has, which around a lowering center plane working equipment lying on top of each other in an axis that is right to the bottom of the groin following positions, starting from which the starting point can be pivoted. If the shoe upper setting is like that in contact with the slide bars and placed, a part 26, which is one of the works, works progressively to the position in which it represents the inside devices and at the junction of the touch the edge of the pinch and stand ready, slide 18-18 is located, as a straightening device, the to influence this externally, 65 gives the worker the opportunity to use the top end

F i g. 5 in a corresponding representation as preparation for clamping in exactly the median Device from the position of FIG. 4 outward facing position to the open slip-ons and pushed so that the pinching edge to the outside to bring the clamping device.

Without first removing the overhead pins 16, the curved end surfaces of the spreading fingers and

or the upper leather edge in the usual way by hand of the clamping fingers offer around the tip for

to fold outwards over the slide is on clamping the outwardly folded edge to the

the middle of the outermost front end of the Zwick slider is an approximately continuous curved

randes exerted a force in such a direction that 5 area.

He moved forward from the position over the insole The whole lasting margin in front of the pulling pins 16 a and pushed downwards to rest against the is in this way turned forward, outward and a bit of the slide and pulled downwards by progressing, because the upper surfaces of the over Moving the point of application of the force from the pusher is below the level of the incendiary contact with the pinch edge on the sole, and through the parts 26, 27-27 pinch edge in the forward direction there is a frictional thrust and 28-28 with the upper surfaces the slide is exercised. According to the exemplary representation held in friction system, so that the upper leather is exerted this force by means of a part 26 around the last evenly taut (Fig. 1 and 4), which is used below as a hold-down, and the edge of the insole for the Applying spreader or finger is referred to and is completely exposed from a 15 of adhesive.
Position of the contact with the slip-ons According to the present method, the (Fig. 1) is moved upwards, inwards over the lasting edge and strips, as soon as the edge spreads outwards and on to beyond the inner edge of the latter and until the slip-on is clamped, moved downwards, on the side of the pull-over pin 16 and then moved downwards in order to bring the surface of the insole into the plane of the underside of the slider as indicated by the dash-dotted lines in FIG. 4 (FIG. 7 interpreted, and then outwards (F i g. 5) when touched and 8). The hold-downs, spreaders and fingers 26 and its lower edge with the surface of the fire 28-28 as well as the clamping fingers 27-27 hold the stick sole, with the result that the pin 16 pulled out with friction on the edges of the slip and the edge tears forwards and downwards so that the upper leather is strongly stretched over the latter when the exercise engagement with the overlapping lasts underneath is moved downwards. This bern is moved so that the edge at the end of its mutual vertical movement of the last and the forward movement firmly against the slide-over slide can be pressed by a gradual release. At the same time, those parts of the edge will be accompanied which, when the bottom surface of the pinch edge, which is located on each side of the part grasped by the insole, approaches the plane of the underside of the fingers 26 through slides on both sides, between the fingers 26, 27-27 sides of the finger 26 arranged hold-down devices, and 28-28 on the one hand and the slip-ons of other spreaders or fingers 28-28 acted, which on the other hand is pulled out. However, the fingers give fingers 26, which are similar and similar to those in and slide their frictional attack on the edge of a circular line in order to grasp the inner surface of the edge at any time during this movement in places that are opposite.

set sides of the toe of the shoe upper tightly As highlighted above, the last located in front of the overlay pins 16a, so that the during the spreading of the edge and the grasped parts of the edge outwards and then lowering the last to tighten the edge in laid down for contact with the slide bars. The working splay fingers 26 and 28-28 40 clamp 20 and 24 and the heel clamp 22 have narrow, elongated, curved surfaces that support the. These clamps are stored so that they can follow the natural curvature of the tip. Each around a perpendicular to the groin floor Finger 26 and 28-28 moves in one direction, axis can rotate. As a result, the rear the direction of movement of the other fingers not opposite the end of the last if desired runs parallel but obliquely, and each finger 45 tip end can be pivoted sideways. Of the cuts the lasting edge and the edge of the last, so the worker can see the last at the heel end he can essentially grasp in one direction and swing from side to side. A moved radially to the curvature of the strip edge. This movement of this kind twists and bears the pinch edge causes the Zwick to spread out more effectively, thereby eliminating stubborn wrinkles and randes on the slide, as if the fingers are wrinkled in 5 °, sometimes at an angle to the parallel direction were moved, and generated run in ground surface and when using certain the splayed lasting margin a minimum of materials by pulling the last upwards Wrinkles and folds. may not be eliminated entirely.

The side fingers 28-28 are in a detachment. After in this way any creases or stand from the middle finger 26, and as a result 55 wrinkles of the pinched edge are eliminated, the edge between the fingers 28-28 and 26 is completely on the edge of the Insole a strip 30 (Fig. 8) is not supported and can sag. With back a quick-drying or setting thermal layer are applied to the intermediate parts of the edge of plastic adhesive, for example to clamp against the slide above which is pushed out of a nozzle N (Fig. 8), the slide intermediate or Auxiliary clamping fingers 27-27 60 are provided around the end of the insole from one side. These intermediate fingers (Fig. 1 to 3 to the other quickly, usually by hand, moved and 6) can be placed vertically over the slip. Optionally, two nozzles can be used to dispense the arranges, and their movement is only a downward adhesive, which are moved towards them so that they are arranged with the spread-out edge in such a way that they come into contact with one another or apart after this after move outside 65 in arcs that are laid around the curve of the shoe. The clamping fingers 27-27 have the same end, so that the adhesive is pressed out in two, if narrow, elongated, arc-shaped lower end strips, which are at the end of the surfaces. Starting from the insole, in opposite directions

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gen move backwards or vice versa, starting on opposite sides, moving up to the tip to move; or a crescent-shaped nozzle can also be used to make an arcuate one Apply adhesive tape all at once on the entire lasting margin. It is important that the glue if he is hot, is applied quickly in order to prevent the adjacent parts of the shoe from heating up, causing the immediate setting of the adhesive would be prevented.

* The slides are now moved inward while the edge is still creased around its edges and held in frictional engagement with their top surfaces by fingers 26, 27-27 and 28-28,

pressing on the edge gradually or suddenly giving up.

The process described here ensures the highest degree of tight application and shaping of the upper leather according to the surface of the last, because before the final release of the ten intermediate layer between the lining and the upper leather.

The method carried out according to the invention, the above in detail in the application to Spitzenzwicken has been described, can also be used for side tweaking. So can according to Fig. 2 on opposite sides of the upper back of the parts 28 devices 29 (similar the fingers 26, 27 and 28 according to the Beo writing above) and in the same order the method steps how fingers 26 and 28 are brought into effect; either in cooperation with fingers 26, 27 and 28 or independently to move the sides of the shoe up.

which release it under resistance, so that the pinch is closed. If desired, in order to iron the advancement of the slide onto the edge, a shock in cooperation with the other parts can maintain a high degree of tension until the usual ironing device K is applied.
Slide a significant part of the margin width The main advantages of the method described

brought into intimate contact with the insole consist in the fact that when a stiffener is applied. This level of resistance can be adjusted accordingly by means of the edge on the overtaking machine the requirements of the particular particular initial center setting of the upper part achieved Be adjustable. Any particular sustained as well as a higher degree of resources can be provided to achieve downward fit on the groin and a permanent fit so that when making frame shoes, neither a lace wire nor another Fastening means is needed. Other purposes achieved are to prevent manual actions from Sides of the worker are reduced, which, in order to achieve the best possible result, with the most possible

The edge can be tied tightly through the rapid drying of skill and skill the adhesive is achieved and the upper leather must.

consequently has no possibility of being able to <

to withdraw its natural elasticity. In addition, this procedure makes it possible to remove the upper leather to be trimmed in such a way that the binding margin is considerably reduced and compared to normal practice this also saves leather.

The method described above is also applicable to the manufacture of frame shoes (Figs. 10 and 11), especially if the edge of the upper leather is to be combined with a stiffening agent is soaked, which is such that the edge tends to maintain any shape into which it is bent will. A thermoplastic adhesive is useful for this purpose. Among the impregnants for this one The purpose is »8070 Wood Resin« from Hercules Powder Company and »2070 Super Beckacite 2000« the Reichhold Chemical Company has been found to be useful, but is only mentioned by way of example will.

If the lasting margin has been impregnated with a substance with such properties, it will through Using the present process, it will shape and solidify the shoulder and rib of the Insole tightly embraces and it is supported by the action of the tools and the slider Maintains its position and shape without attaching a pin wire To request brackets or other external holding means. Preferably the stiffening agent is such as e.g. a thermoplastic adhesive with the proposed soaking of the rim in hot and liquid state pressed into the structure of the upper leather on its flesh side before the shoe upper is united on the last. Notwithstanding, if the shoe upper contains a lining, this should be soaked with the stiffening agent. Another possibility is the arrangement of a beverage

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Claims (10)

Patent claims: 1. Method for pinching shoe ends by means of fast-setting adhesive, in which the upper part material attached to a last carrying an insole and the latter in this way is arranged that the insole surface over the ground level of the last spanning the last open slip, then the binding margin is moved outwards and against the slip clamped and the strips, while the edge remains clamped spread out, lowered is to bring the insole surface under the slip-on level, so that the upper part material is effectively tensioned, and in which the spreading edge of the upper part material is finally pivoted inwards over the insole, characterized in that that the adhesive in the angle between the shell material and the exposed edge the insole after lowering the last and immediately before pushing over the stitching edge brought in and the binding edge on the insole edge coated with the adhesive is pushed over quickly. 2. The method according to claim 1, characterized in that the binding margin prior to application of the upper part material is soaked on the strips with a substance that the upper part material stiffened so that it maintains its shape after being pinned without the need for a pointed wire. 3. The method according to claim 2, characterized in that a thermoplastic resin is used for impregnation. 4. The method according to claim 1, characterized in that the moving the binding edge Forces first down on the insole surface within the binding margin and then on the Inner surface of the binding edge parallel to the surface of the insole and beyond its edge act to move it outward and lock down against the surface of the slider to press (Fig. 1 and 4). 5. The method according to claim 1, wherein the shoe upper is pulled onto the last and is connected to it by dowel pins, characterized in that the dowel pins through the forces acting on the binding edge for the purpose of pushing upwards from the insole removed. 6. The method according to claim 1, characterized in that indicates that the binding margin extends from the edge of the insole to the slide is pushed by spreading forces which are essentially parallel to the upstanding binding edge to the insole and to the curvature of the last ao edge exerted essentially radially outward will. 7. The method according to claim 1, characterized in that the slide between Additional parts of the binding margin are clamped onto the initially clamped margin parts (Fig. 3 and 6). 8. The method according to claim 7, characterized in that the further clamping forces are directed essentially perpendicularly against the slide. 9. The method according to claim 8, characterized in that after clamping the spread The binding edge and after lowering the last the latter is pivoted back and forth (Fig. 7). 10. The method of claim 1, wherein against the upwardly and downwardly facing surfaces of the Last a clamping force is exerted, characterized in that the clamping forces during the clamping of the binding margin to the slider, the lowering of the last, and the application the glue and pushing the previously spread out margin against the insole is maintained. Considered publications:
German Patent No. 826 111;
German Auslegeschrift No. 1 023 855;
Austrian Patent No. 122,693;
U.S. Patent No. 1,487,915,1508,593, 541 815.1 990 803, 2 140 652, 2 156 393, 331 220, 2 349 815.2 516 970, 2 736 045,
772 658. 1 sheet of drawings 509 598/65 6.65 © Bundesdruckerei Berlin COPY