DE1167224B - Inner seam trimmer with means for smoothing the trimmed inner seam seams by tapping and rubbing - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Boarding school KL: A 43 d

German class: 71c-55/00

Number: 1 167 224

File number: U 9169 VII a / 71 c

Filing date: August 2, 1962

Opening day: April 2, 1964

The invention relates to a machine for trimming the inner seam hems of partially finished frame shoes. The term "inner seam seam" here refers to the rib from the by the insole rib held together by the inner seam, the frame and the upper material.

It is generally known that the frame sewn to the insole rib attaches to the shoe upper instead of taking up the desirable flat position in which the frame is in a plane running parallel to the underside of the insole. This creation of the frame on the upper is the result of the tension acting on the outer edge of the frame and the pressure acting on the seam line and occurs particularly at the toe of the shoe and in other places with relatively small radii of curvature. So that the Frame takes the desired flat position, it becomes common after trimming the inner seam rib subjected to a call waiting process. The call waiting of the frame is carried out by means of a special Machine made, which cancels the loads acting on the frame or in the desired Dimensions reduced.

After the inseam rib has been trimmed, it is often desirable to trim its trimmed surface smooth so that the irregularities resulting from the trimming process are evened out. This operation is also carried out in a special machine.

Attempts have been made to make a machine with which the inner seam rib can be trimmed and its surface smoothed by tapping and rubbing, at the same time eliminating or reducing the tendency of the frame to lie against the shoe upper, but so far no commercially acceptable machine has been able to do so be generated. This result is due to the fact that those to carry out the knocking and rubbing of the surface of the. Inner seam rib required additional means impair the operator's field of vision over the cutting point in such a way that the working speed is reduced to a considerable extent. As a result, the benefit obtained by combining these operations into one machine is negated.

The aim of the invention is to create a machine in which the working steps of trimming the inner seam rib and smoothing its surface are combined and the necessary to-inner seam trimming machine with means for
Smooth the trimmed inner seam hems by tapping and rubbing

Applicant:

United Shoe Machinery Corporation,

Flemington, N.J. and Boston, Mass. (V. St. A.)

Representative:

Dr.-Ing. H. Fincke, Dipl.-Ing. H. Bohr
and Dipl.-Ing. S. Staeger, patent attorneys,
Munich 5, Müllerstr. 31

Named as inventor:

Herbert Ferris Ross, Winchester, Mass.,

Milton Herman Roske, Boxford, Mass. (V. St. A.)

Claimed priority:

V. St. v. America of August 21, 1961 (132 637), April 25, 1962 (190 155)

additional means do not impair the operator's field of vision over the pruning point, which, however, can be operated just as easily and quickly as machines for carrying out the Work steps of trimming the inner seam rib, smoothing its surface and tapping of the frame each for itself.

The inseam trimming machine with workpiece feed means, with a trimming tool and with means for driving the workpiece feed means and the trimming tool is after Main feature of the invention characterized in that the trimming tool with the Means (lugs or projections) for exerting a knocking and frictional effect on the workpiece is united during the trimming process. According to the invention, the trimming tool includes firstly a rotatably arranged, blade having holder and is on the circumference the holder next to the blade with a variety of lugs.

According to the invention, the trimming tool is designed for the second as a rotatable, cup-shaped knife.

409 557/83

forms that on its circumference in addition to its cutting F i g. 8 is a side view of the FIG. 6 shown

edge has a variety of approaches. resources,

In both embodiments of the invention, FIG. 9 is a side view of the FIG. 8 images the approaches of the pruning tool each other including one in section above it the cutting edge of the trimming tool 5 provided a view of the inner seam rib in the

addition radially outwards. Machine imported shoe.

In accordance with the invention, each of the lugs of Figure 10 is a sectional view of the trimmed nails substantially wedge-shaped projection, the seam rib of the shoe shown in FIG

with the workpiece during the trimming process - before smoothing the surface of the inner seam rib

ges for tapping and rubbing the inner seam rib in io and

Intervention occurs. FIG. 11 is a view similar to FIG. 10, in

The inner seam trimmer has a one which the inner seam rib after smoothing it

Part of the workpiece feed means forming front surface is shown.

In Fig. 1, the in Fig. 1 are characterized in that the feed machine usually provided workpiece front wheel contains a concave part in which the thrust means and a for trimming the inner cutting edge of the trimming tool and the Enter the rotary trimming tools serving for the sewing rib, an axis of rotation of the tool 2 being shown. A driven feed wheel 4, feed wheel with respect to a plane of the cutting a frame folding guide 6 and a rotating edge of the trimming tool is inclined. 20 rib guide 8 cooperate with the trimming device - according to the invention, the trimming tool 2 together and are located next to a third a curved trimming knife and the trimming point C, which is within a cutting-knocking and rubbing of the inner seam rib during the edge of the trimming tool 2 representing the Trimming process with a straightening iron with level P (Figs. 1, 4 and 5). Provide the frame fold protrusions. 35 guide 6 is designed and in the machine

According to the invention, this is arranged together with the loading in such a way that it is in the fold between

cutting knife movable straightening irons on one of a frame 10 (Fig. 2) and a shoe upper

Side of the trimming knife which enters 12 of a partially completed shoe,

opposite to its cutting edge. around the frame 10 against the feed wheel 4

According to the invention, one with the 30 press and the movement of the shoe in the Ma-

Restrict workpiece engaging surface of the machine into it. The feed wheel 4

Straightening iron projections provided and extending has a knurled outer surface 14 (Fig. 1) that coincides with

that which comes into engagement with the workpiece is opposite to that of the frame fold guide 6

Surface of the pivot axis of the trimming surface of the frame 10 engages. That

knife to the outside beyond its lower surface. 35 feed wheel 4 is for picking up part of the

According to the invention, the straightening iron is designed to be concave towards the trimming tool 2. DieRip-Move the trimming knife serving lever penführung 8 occurs with the inner surface of a fire adjustable arranged. Sole rib 16 in engagement and can be stationary or

The one shown in the drawings can be arranged to be rotatable or also driven

The machine that embodies dung is only used to turn 40.

The machine has a frame 18 in which a border of the invention on the depicted drive shaft 20 is supported, which in a suitable manner, for. B. machine. In the drawing is by means of a motor-driven belt and a

F i g. Fig. 1 is a front view of part of which the Er pulley 22 (Fig. 1) is driven. That

finding embodying machine for trimming 45 feed wheel 4 is on a not shown, a

the inner seam rib and attached to smooth their upper axis A having shaft. This wave

area, is also stored in the frame 18 and is of

FIG. 2 shows a sectional view of a drive shaft 20 being machined by means of a not shown

located frame shoe and the cutting gears driven. As shown in Figs. 1, 4 and 5

and feed means of the machine, the section 50 being visible, the axis A of the feed

passed through the widest part of the shoe, the shaft carrying the wheel 4 at an angle to which the cutting

is the edge of the trimming tool 2 representing

F i g. 3 a level through the widest part of the shoe P.

guided sectional view in which a frame from The frame fold guide 6 consists of a

is formed, which is applied to the shoe upper 55 a pin 24 attached idle edge. The pen 24

is screwed into a lever 26 which is attached to the

F i g. 4 is an individual view of an embodiment of alternate 18 is arranged pivotably. The frames-

a trimming thread guide 6 provided with knocking means stands under it in the direction of

Tool in working position with respect to the work- push the feed wheel 4 against the frame 10-

piece feed means of the machine, 60 the spring force and can be used to facilitate the

F i g. 5 shows a detailed view of a further execution of a shoe in the machine by means of a form of the foot lever provided with knocking means, not shown, from your workstel cutting tool, ment can be moved.

Fig. 6 is a plan view of modified means for The machine is not shown and on

Trimming of the inner seam rib and means for smoothing 65 known means for adjusting the spacing

their surface, between the frame fold guide 6 and the

FIG. 7 shows a sectional view along the line VII-VII feed wheel 4. The rib guide 8 is

the F i g. 6 including part of a shoe, rotatably attached to a mounting arm 28,

which is attached to a not shown, in the frame 18 Shaft is pivotable. As already mentioned, the rib guide 8 can be powered or run empty at the lower end of the fastening arm 28. The pivoting movement of the mounting arm 28 is controlled by means of a lever arm 30 which is connected to the above-mentioned foot lever is. When the foot lever is lowered, the lever arm 30 and that with the lever arm 30 are adjustable connected mounting arm 28 for moving the rib guide 8 out of its working position pivoted so that a shoe can be easily inserted into the machine. As soon as the foot lever is released, a spring, not shown, presses the rib guide 8 against the inner surface of the Insole rib 16.

As in Fig. 2 and 3, the shoe to be processed is on a last 32 and contains, in addition to the frame 10, the shoe upper 12 and the insole rib 16, an insole 34, ao Insole reinforcement material 36, lining 38 and a seam line 40 forming the inner seam Fig. 3 with solid lines shown frame 10 has applied to the shoe upper 12, while the indicated with dashed lines frame 10 the desired, substantially parallel to the surface of the insole 34 running flat position assumes.

In Fig. 4, an embodiment of the trimming tool 2 is shown. It includes a replaceable blade 42 attached to a multi-part bracket 44. The holder 44 is located on a shaft 46 which is rotatable about an axis B and which carries a gearwheel 48. The gearwheel 48 is driven by means of a gearwheel mechanism (not shown) that connects the shaft 46 to the drive shaft 14. The trimming tool 2 can be adjusted by means of an adjusting screw 50 along its axis of rotation B in a manner known per se. A plurality of lugs 52 equidistant from one another are attached to the outer surface of the holder 44 at a small distance from the plane P representing the cutting edge of the blade 42. The lugs 52 are substantially wedge-shaped, but have rounded corners 54 and 56.

In Fig. 5 is a further embodiment of the trimming tool also provided with the projections 52 2 pictured. This trimming tool 2 does not have a replaceable blade like that in FIG. 4 shown trimming tool 2, but consists of a cutting edge 60 having a cup-shaped Blade 58. While the lugs 52 in the embodiment of the trimming tool shown in FIG 2 are attached to the bracket 44, the lugs 52 of the in F i g. 5 shown Trimming tool 2 directly on the blade 58. In both embodiments of the trimming tool 2, the lugs 52 act in the same way.

Since the axis A of the feed wheel 4 is inclined to the plane P of the cutting edge of the trimming tool 2, sufficient space is available to accommodate the cutting edge of the cutting tool 2 and the lugs in the concave part of the feed wheel 4. Although the cutting edge of the trimming tool 2 extends up to the surface of the feed wheel 4, a small gap remains between the surface of the feed wheel 4 and the cutting edge of the cutting tool 2.

As shown in FIG. 2 can be seen, the shoe is introduced into the machine so that the frame 10 between the feed wheel 4 and the frame folding guide 6 is detected. The feed wheel 4 and the rotating rib guides 8 act to advance the inner seam rib toward the cutting edge of the trimming tool 2 with the frame fold guide 6 together. The by means of the trimming tool 2 executed section extends along a line 62 (Fig. 3). During trimming the inner seam rib get a larger circumference than the cutting edge of the trimming tool 2 having lugs 52 with the inner seam rib in engagement and smooth the surface the inner seam rib by exerting a friction effect on this surface. As a result, the The height of the trimmed inner seam rib is reduced by an amount indicated by a line 64 in FIG. 2 is indicated. In addition, the lugs 52 are used for knocking at least the inner part of the Frame 10 to the frame folding guide 6.

As a result of the relatively large number of lugs 52 on the trimming tool 2 and the high speed of rotation of the trimming tool 2 is applied to the trimmed inner seam rib a wide variety of strikes in rapid succession. This will not only the surface of the inner seam rib is smoothed, but those existing in the frame 10 are also smoothed Stresses released or reduced so that the frame 10 is brought into a position in which it is parallel to the trimmed surface of the inseam rib and the surface of the Insole 34 runs.

The trimming tool 2 can also have the shape of a trimming knife 66 (FIGS. 6 to 9). Since the trimming knife 66 for trimming the inner seam rib is not like those shown in FIGS. 4 and 5 Trimming tools 2 rotated, but pivoted back and forth at high speed the inner seam trimmer must be designed accordingly differently. These changes however, do not form part of the invention and are therefore not described in detail.

As shown in FIG. 8, the trimming knife 66 consists of a curved blade that is connected to the Feed wheel 4 is in shear engagement. The trimming knife 66 is adjustable on a lever 68 jammed, which can be pivoted about a pin 70. The pin 70 is located in one on the frame 80 adjustably mounted bracket 72. A crank arm 74 is hinged to the lever 68 and is known in Way moved by a crankshaft, not shown, which is connected to the drive shaft 20 by means of Belts and pulleys or the like. Is connected.

The trimming knife 66 is designed and arranged in such a way that its lower surface 76 coincides with the arc of a circle, the center point M of which is formed by the axis of the pin 70. The blade of the trimming knife 66 is in the form of FIG. 6 to 8 created in such a way that at one end an inclined surface 78 is created, which the lower surface 76 for forming an arcuate cutting edge 80 on one side of the loading

cutting knife 66 arises. Though according to the drawing only the lower surface 76 of the illustrated trimming knife 66 with a corrugated toothing 82 is provided, the inclined surface 78 can also be equipped with a corrugated toothing.

The trimming knife 66 cooperates with the trimming knife with a concave shear surface 84 of the 66 used feed wheel 4 together and is adjusted so that the lower surface 76 with the shear surface 84 is in shear engagement. When the trimming knife 66 through the over the crank arm 74 and the lever 68 acting crankshaft is moved back and forth, it performs short working strokes high speed, being different from that depicted in solid lines in Figs. 6 and 8 Position reaches the position shown in these figures with dash-dotted lines and from the Outer edge 86 of the feed wheel 5 does not emerge.

So that the trimming knife 66 smooths the inner seam rib by rubbing and tapping, the trimming knife 66 assigned to a straightening iron 88. An upper end 90 of the straightening iron 88 is made of one by means of one Slot and a screw existing connection 92 adjustably attached to the lever 68 so that it is pivoted back and forth together with the trimming knife 66. One with the workpiece in Engaging arcuate surface 94 of straightening iron 88 is provided with a number of protrusions 96 Mistake. As shown in FIG. 6 and 7, the straightening iron 88 is located on that side of the trimming knife 66, which lies opposite the cutting edge 80. A front portion 98 of the straightening iron 88 extends below the conical outer surface 14 of the feed wheel 4.

The straightening iron 88 is adjusted by means of the connection 92 so that its engages the workpiece stepping surface 94 is below the lower surface 76 of the trimming knife 66 (see Figs. 7 and 8) extends. The workpiece engaging surface 94 is flush with the bottom surface 76 of the trimming knife 66 is preferably not in the same center, but has a larger radius of curvature, so that they are on the surface of the inner seam rib trimmed by the trimming knife 66 exerts a progressively increasing frictional effect. Thus, it can be seen that the projections 96 not only for rubbing the surface of the inner seam rib, but also for tapping the inner seam rib to serve.

When the trimming knife 66 is used as the trimming tool 2, the shoe becomes introduced into the machine so that the frame folding guide 6 engages the frame 10 and presses it up against the knurled outer surface 14 of the feed wheel 4 and that the rib guide 8 comes into contact with the inner surface of the insole rib 16. If part of the inner seam rib is bent outwards over the frame 10, this part becomes a shoe guide 100 (Fig. 6) and, before this part of the inner seam rib reaches the trimming point, in an upright position Location managed. The shoe is moved towards the reciprocating cutting edge 80 of the Trimming knife 66 moved forward. To trim the inner seam rib in the manner shown in FIG. 10 shown The cutting edge 80 interacts with the shear surface 84 of the feed wheel 4. The cut is Run above the seam line 40 so that the stitches are not cut. The trimmed surface the inner seam rib is then exposed to the action of the straightening iron 88, which together is pivoted back and forth with the trimming knife 66. Since the engaging with the workpiece Surface 94 of straightening iron 88 extends beyond lower surface 76 of trimming knife 66, the height of the inner seam rib is reduced so far that the inner seam rib over the seam line 40 only something protrudes. The frame folding guide 6 acts as an anvil in this operation. Depending on The straightening iron 88 can also adjust the amount of tilting of the shoe with the one resting against the outsole Surface of the frame 10 engage in order to be supported by the frame folding guide 6 frame 10 to exercise a knocking effect. This is particularly advantageous when the frame 10 has applied to the upper 12 of the shoe.

Since the straightening iron 88 is moved together with the trimming knife 6, it has the same speed and swing amplitude like the trimming knife 66. The straightening iron 88 can also be used with the Trimming knife 66 consist of one piece or attached directly to the trimming knife 66 will. If the straightening iron 88 is attached directly to the trimming knife 66, it can in Height direction with respect to the trimming knife 66 can be adjusted.

Claims (10)

Patent claims: 1. Machine for trimming the inner seams of footwear, with a trimming tool, combined with means for smoothing the trimmed inner seam hems by tapping and rubbing to remove or reduce the tendency of the frames to adhere to the shoe uppers to apply, characterized in that the trimming tool (2, 66) with the means for knocking and rubbing, such as lugs (52) or projections (96), is combined (Fig. 1, 2, 4, 5; Fig. 6 to 8). 2. Inner seam trimming machine according to claim 1, characterized in that the trimming tool (2) a rotatably arranged holder (44) having a blade (42) and on the periphery of the holder (44) adjacent the blade (42) with a plurality of lugs (52) is provided (Fig. 4). 3. Inner seam trimming machine according to claim 1, characterized in that the trimming tool (2) is a rotatable, cup-shaped knife with a plurality of on its circumference next to its cutting edge (60) provided approaches (52) is provided (Fig. 5). 4. Inner seam trimming machine according to claim 1 to 3, characterized in that the Approaches (52) of the trimming tool (2) extend over the cutting edge (42 or 60) of the trimming tool (2) also extend radially outward (Figs. 4 and 5). 5. Inner seam trimming machine according to claim 1 to 4, characterized in that each of the lugs (52) consists of a substantially wedge-shaped projection which is connected to the Workpiece engaged during the trimming process for tapping and rubbing the inner seam rib occurs. 6. Inner seam trimming machine according to claim 1 to 5, with a feed wheel forming part of the workpiece feed means, characterized in that the feed wheel (4) contains a concave part in which the cutting edge (42 or 60) of the cutting tool (2) and the lugs ( 52), an axis of rotation (A) of the feed wheel (4) being inclined with respect to a plane (P) of the cutting edge (42 or 60) of the trimming tool (2). 7. Inner seam trimming machine according to claim 1, characterized in that the trimming tool (2) A curved trimming knife (66) is used for tapping and rubbing the inner seams during the trimming process is provided with a straightening iron (88) together with projections (96) (FIGS. 6 to 9). 8. inner seam trimmer according to claim 7, characterized in that the together move with the trimming knife (66) borrowed straightening iron (88) on that side of the trimming knife (66) is arranged, which its cutting edge (80) is opposite (Fig. 6 and 7). 9. Inner seam trimming machine according to claim 7 and 8, characterized in that on a workpiece engaging surface (94) of the straightening iron (88) projections (96) are provided and that the workpiece engaging surface (94) is from the pivot axis (M) of the trimming knife (66) beyond its lower surface (76) extends outside (Fig. 7). 10. Inner seam trimming machine according to claim 7 to 9, characterized in that the Straightening iron (88) adjustable on a lever (68) used to move the trimming knife (66) is arranged (Fig. 6). Considered publications:
U.S. Patent Nos. 2,323,942, 2,970,328. For this purpose 2 sheets of drawings 409 557/83 3.64 © Bundesdruckerei Berlin