DE61116C - Upper leather skiving machine - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The points on which there is a skiving machine what matters are the guiding of the knife, the laying down of the leather on the bed and the adjustment device, which allows the leather to be laid quickly and accurately in such a situation has to bring about, that the knife starts in the right place.

With this machine, the prefs plate with the. Slideways of the knife carriage like this connected that one end of these slideways goes up and down with the Prefsplatte; the other end rotates around a fixed point. This will make the knife cut the Leather thickness adjusted and directed diagonally against the leather surface, and there with the decline the knife is raised, the knife goes completely free without the leather to touch back. The leather is pressed against the cutting bed by a rotating one Profile washer, which lowers the Prefsplatte under the compensating effect of springs, and at the same time guides the knife over the leather by means of a slider crank drive. at the decline of the knife runs the profile. slice the prefilling plate and with it the knife stand out from the leather.

The center line of the upper leather is drawn at the same time. Inserting the leather into the correct position is achieved by placing on an adjustable and changeable template. Either the ends of the side parts or the throat of the cut Upper leather applied.

The adjustment devices consist of one device which regulates the distance from the knife, a second one which adjusts two jaws to the throat or cutout of the upper leather, and a third one against which the ends of the upper leather can rest, which is necessary for leaf upper leather pieces is, while upper leather lower leather can only be created in the neckline.
■ Fig. Ι is a side view of a machine which contains the invention, wherein the adjusting device is omitted,

Fig. 2 shows a plan of Fig. 1, ■
Fig. 3. a longitudinal section on a larger scale. Yardstick,

Fig. 3 a is a section along line 3 ^a -3 ^{a of} the

Fig. 2,,

3b shows the cutting bed in outline and in section;

Figures 4, 5 and 6 show the adjustment device;

Figure 7 is a one-off modification of the apparatus.

On the frame A there is the cutting table α a \ on which the cutting bed a ² x and the setting device G are attached, as is the edge m ¹ for marking the center line. The cutting bed a ² is embedded in a recess in the table. The marking edge m ^l protrudes somewhat beyond the surface of this bed, so that it is pressed into the leather when the pressing plate B is pressed down. The sheet metal strip, which ^{carries the edge m 1} , is pressed between the approach of the cutting ^{table λ 1} and the edge of the cutting ^{bed α 2.}

The Prefsplatte B respectively. the yoke that bears them is b. pushed onto push rods b ² with sleeves & ¹ connected by yoke b . The location of the pods. the

Claims (2)

_r ". _v - ι The rod is determined by springs b * and b ^a , which lie against the adjusting nut b ¹ and at the bottom against the ears of the frame A. The rods b ² guided vertically in these ears of the frame A are abutted by the profile disk Z> ⁵ . the friction roller of the arm b ^z moves. Characterized the Prefsplatte B receives the resilient upward and downward movement, which is necessary for the clamping of the leather. "The adjusting nuts b ¹ die.Spannung allow the downwardly urging spring to regulate b. ⁶ The cutting device consists of knife rf ¹ , knife carrier rf ⁴ , the sliding knife carriage D with columns rf °, the slideways rf and the push rod rf ² , by means of which the knife carriage is pushed back and forth by a crank pin on the profile disc b ^b. The slideways are hinged to Fig. 3 on one side of post a ³ , while the other side is connected by joints with the Prefsplattenhülsen b ^l and goes up and down with these, ie is lifted every time the knife is falling and after Adjusts leather thickness. Fig. 7 shows how the slideways d can also be rigidly connected to the Prefsplatte. But then, when the slide is parallel to the table top, the point of the cutting bed over which the sharpening takes place must be at the sharpening angle against the direction of the slide. The adjustment of the knife is obviously not the whole difference in thickness of the different types of leather, since only the end point of the slideways d can shift by this whole amount; but the setting is completely sufficient. The knife carriage slides with its slotted sleeves to be sealed by screws on the slideways d d. The spindles rf ^{5 are} screwed into the slotted columns rf ^{6 of} the knife carriage and held in place by clamping screws rf ⁷ . The screw spindle rf ⁵ can be rotated by means of the ring rf ^4. On it sits the nut rf ⁴ , to which the knife carriage rf ³ follows. This one carries the knife rf ¹ . Above the nut d ⁱ is a ring to which the carrier of the fingers rf ^{2 is} attached and which is pressed tightly against the nut rf ^{4 by the clamping nut rf 8} . The fingers rf ² serve to press the leather firmly against the cutting bed in front of the knife rf ^{1 during cutting.} The tips of the fingers rf ² can spring up and down without touching the cutting edge of the knife. · The purpose of the adjustment device G is to provide the cutout of the upper leather with contact surfaces which enable the work gap to be placed quickly and precisely on the cutting bed. For this purpose, the entire adjustment device is adjustable in the direction of the knife movement. It slides in a groove in the table and is fixed by screw g ^3. The curved cheek pieces g serve to lay the throat of the cut leather against them. They are attached to the center piece G ^{2 of} the adjustment device by arms g ¹ g ¹ and arms g ² g ² , the hinge points of which are in line with the end of the curvature of the jaws. An adjustment by means of the arms g ^l g ^x takes place by longitudinal displacement and clamping of the common pin g ″; the adjustment of the arms g ² is carried out by means of a rack and pinion. The needle g * shows the setting of the center piece on a scale. Since the cut of the various upper leathers is different, it is necessary to make this setting variable while the circumstances remain the same. For this purpose, the needle is displaceable on its carrier. Short upper leathers or pieces of leaf must be adjusted by applying their two rear ends. The arm g ^r ° is provided for this purpose, the ends of which bend down onto the cutting table. The upper leather ends lean against these. The arm is fastened by means of clamping screws on a corrugated part of the middle section. Since this part is for the sake of constructive relationships. is usually shorter than the desired adjustability, the ends of the arms are bent from the vertical to the center piece, so that an additional adjustment takes place by turning the arms by 180 °. The various adjusting devices according to the size number of the upper leather according to cut, width and throat are independent of one another, so that when editing an upper leather number, e.g. B. each time only to adjust the arms g of the respective throat width, but does not need to change the setting of the middle piece. The setting is effected by a stop, which is expediently used by the end of the slot in which the piece G ² slides. Patent claims: An upper leather skiving machine, one of which the drives of the pre-plate of the knife are connected in such a way that the Slideways of the knife carriage with the Prefsplatte go up and down and thereby Adjust the knife according to the leather thickness and let it go back freely. 2. In the case of an upper leather peeling machine, the type described under i. marked type the association of the following parts: a) a cutting table (a) on which the marking edge of the center line (m ¹ ) is located; ; b) a Prefsplatte (B), which by means of a profile disc (b ^h ) is pressed downwards by means of a spring (b ^e ) and thereby takes the slideways (d) of the knife carriage with it; c) a knife carriage (D) which is moved from the profile disk by the push rod (d ² ) , an adjustable knife (d ^l ) and resilient pressure fingers (d '*) in front of the cutting edge of the same . wearing; d) an adjustment device, consisting of a longitudinally adjustable middle piece (G ² ) with adjustable needle (g ⁱ ), independently adjustable jaws (gg) for placing the throat of the upper leather and a curved adjustable arm / g ⁵ ). for laying the ends of upper leather. ': ■. - For this purpose ι sheet of drawings