WO2005014864A2

WO2005014864A2 - Skiving machine for leather

Info

Publication number: WO2005014864A2
Application number: PCT/KR2004/001975
Authority: WO
Inventors: Il Jung Jang; Kwang Ho Jang
Original assignee: Il Jung Jang; Kwang Ho Jang
Priority date: 2003-08-07
Filing date: 2004-08-06
Publication date: 2005-02-17
Also published as: KR100584627B1; KR20030074528A; WO2005014864A3

Abstract

The present invention relates to a skiving machine for leather capable of cutting a cutting portion of a leather piece at a slanted angle, and in particular to a skiving machine for leather capable of enhancing a quality and productivity of a leather product by achieving a smooth transfer and precise cutting in such a manner that a pressing member (so called, deer foot) supporting leather and a support (so called, jacket) determining a cutting width are formed in a roller type when cutting a cutting portion of leather at a slanted angle.

Description

SKIVING MACHINE FOR LEATHER

Technical Field

The present invention relates to a skiving machine for leather capable

of cutting a cutting portion of a leather piece at a slanted angle, and in particular

to a skiving machine for leather capable of enhancing a quality and productivity

of a leather product by achieving a smooth transfer and precise cutting in such

a manner that a pressing member (so called, deer foot) supporting leather and

a support (so called, jacket) determining a cutting width are formed in a roller

type when cutting a cutting portion of leather at a slanted angle.

Background Art

In order to fabricate a product such as a shoe, bag, footwear, etc. using

leather, wide leather is cut into multiple leather pieces each having a certain

shape, and a cutting portion of each leather piece is cut at a slanted angle. The

cut portions are bonded using bond or are connected by a sewing method.

Therefore, a certain product is finished by connecting multiple leather pieces.

The cut portions of leather pieces are cut for the reasons that the

connected portions may be protruded as compared to other surfaces of the

other side when connecting the leather pieces and finishing one product.

Here, the work for cutting the cut portions of the leather pieces at a slanted angle is called skiving. A skiving machine is used during the skiving

work.

A conventional skiving machine includes a skiver having a cylindrical

rotation blade, a pressing member that downwardly supports leather entering

into the skiver, and a support member that determines the width of leather to be

cut. Here, the pressing member and the support member are formed of an

integral steel material.

Therefore, in the skiving machine having the pressing member and the

support member, when the leather is transferred to the skiver having a

cylindrical rotation blade, friction occurs between the leather and the contact

surface, so that the leather is not normally transferred in its way, whereby the

leather is biased. Therefore, the cutting amount and shape are not uniform.

The above problems occur due to foreign substances or bonds attached

on the surface of the leather, the pressing member or the support member. The

above phenomenon retards a smooth transfer of the lather, and torsion is

caused in leather. Therefore, a uniform cutting is not achieved. In the case that

the leather pierces are bonded and sewed, a uniform surface is not achieved.

Namely, a defective product having protruded portions is fabricated.

In addition, sometimes, the leather pieces may be stuck to the pressing

member or the support member based on the kinds of leathers, so that one side

of the leather has never been cut. In this case, the leather cutting work is impossible. Disclosure of Invention

Accordingly, it is an object of the present invention to overcome the

problems encountered in the conventional art. It is another object of the present invention to provide a skiving machine

for leather capable of achieving a smooth transfer and an accurate cutting

based on a rolling movement of leather, and a transfer of leather is well guided

in such a manner that a roller is installed between a pressing member and a

support member and leathers. To achieve the above objects, in a skiving machine for leather that

includes a skiver having a cylindrical rotational blade, a pressing member and a

support roller that support the transferring leather with a distance by the

thickness of the leather in the upper and lower sides of the blade of the skiver,

and a support member that supports the cutting portion of the leather cut

vertically with respect to the transferring direction of the leather and determines

the cutting width of the leather, there is provided a skiving machine for leather

that includes a pressing roller installed at a contact portion with a leather below

the pressing member; and a lateral support roller installed at a contact portion

with a cutting surface of the leather that is an end of the support member.

Brief Description of Drawings

The preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Figure 1 is a perspective view illustrating the entire construction of a

skiving machine for leather according to the present invention;

Figure 2 is a partial perspective view illustrating a skiving machine for

leather according to the present invention;

Figure 3 is a perspective view illustrating an important element of a

skiving machine for leather according to the present invention;

Figure 4 is a cross sectional view illustrating an important element of a

skiving machine for leather according to the present invention; Figure 5 is a vertical cross sectional view illustrating an important

element of a skiving machine for leather according to the present invention;

Figure 6 is a plane view illustrating an important element of a skiving

machine for leather according to the present invention;

Figure 7 is a vertical cross sectional view illustrating a support member

according to the present invention; and

Figure 8 is a view illustrating a bonded state of two cut pieces of leather

according to the present invention.

Best Mode for Carrying Out the Invention The construction and operation of the present invention will be

described with reference to the accompanying drawings.

In a skiving machine 100 for leather that includes a skiver having a cylindrical rotational blade, a pressing member 3 and a support roller 4 that

support the transferring leather 2 with a distance by the thickness of the leather

2 in the upper and lower sides of the blade of the skiver 1 , and a support

member 5 that supports the cutting portion of the leather 2 cut vertically with

respect to the transferring direction of the leather 2 and determines the cutting

width of the leather, there is provided a skiving machine for leather, comprising

a pressing roller 6 installed at a contact portion with a leather 2 below the

pressing member 3; and a lateral support roller 7 installed at a contact portion

with a cutting surface of the leather 2 that is an end of the support member 5. The pressing roller 6 has the same curvature rotation surface as an

outer diameter of the blade of the skiver 1.

In the drawings, reference numeral 8 represents a transfer groove

formed in the support member 5, and 9 represents a fixing bolt engaged to the

transfer groove for fixing the support member 5. In the skiving machine 100 according to the present invention, the

pressing roller 6 and the lateral side support roller 7 are installed in the pressing

member 3 and the support member 5, respectively, achieving a smooth transfer

of the leather 2.

In the skiving machine 100 according to the present invention, the

connected portions are not protruded when connecting the multiple leather

pieces 2 by cutting the sewing portions of the leathers for thereby achieving a

smooth surface. Here, the skiver 1 having a cylindrical blade cuts the cutting portions of the leathers 2, and as shown in Figure 2, the sliver 1 is driven by the

rotation of the driving apparatus.

The leathers 2 are cut, while being moved to the skiver 1. The leather 2

is transferred by the support roller 4 between the upper portion of the support

roller 4 and the pressing member 3.

The cutting width of the leather 2 is determined by the support member

5. The transfer groove 8 is longitudinally formed in the support member 5, so

that it is adjustable. The fixing bolt 9 is engaged to the transfer groove 8, so that

the cutting width of the leather 2 is determined. As shown in Figure 4, since the

cutting portion of the leather 2 contacts with the support member 5, so that the

leather 2 stops its moving toward the support member 5, whereby the cutting

width is determined.

The leather 2 is cut by the skiver, while being moved. At this time, the

pressing member 3 allows a smooth cutting of the leather by pressing the

leather from the upper side. Figures 3 and 7 show the roles of the pressing

member 3 and the support member 5.

In order to cut the cutting portions at a slanted angle, when the leather 2

is pushed between the support roller 4 and the pressing member 3, the leather

2 stops its moving by the support member 5. Namely, the support member 5

plays a role of the stopper capable of determining the cutting width of the

leather 2. As shown in Figures 1 and 6, the leather 2 can be variably moved by

adjusting the fixing bolt 9 of the support member 5. As shown in Figure 6, when the support member 5 is moved in the left direction and is fixed, the cutting

width of the leather 2 gets wider, and on the contrary, when the support member

5 is moved in the right side and is fixed, the cutting width of the same gets

narrower. The cutting portions of the leather 2 cut by the skiver 1 is shown by

the dotted lines in Figure 6.

When the leather 2 is loaded, the leather 2 is moved by the rotation of

the support roller 4. As shown in Figure 2, the support roller 4 is driven by the

same driving force as the force used for driving the skiver 1.

When the leather 2 driven by the driving of the support roller 4 reached

the blade of the skiver 1 , the skiver 1 cuts one side of the leather 2 at a slanted

angle. The slanted cutting is achieved based on the cylindrical shape of the

skiver 1. A stable and accurate cutting is achieved by the pressing member 3

that is provided on the skiver 1 and presses the leather 2.

In the operation of the skiving machine 100, the leather 2 always

contacts in the pressing member 3 and the support member 5 and is moved.

Therefore, in the present invention, the leather 2 is smoothly moved.

A pressing roller 6 is installed in a contact portion of the leather 2 of the

pressing member according to the present invention. A lateral side support roller

7 is installed at a portion contacting with the leather 2 at an end portion of the

support member 5.

Therefore, in the conventional art, a strong friction occurs based on a direct contact with the leather 2 without rollers, so that the leather 2 is not the support member 5 is moved in the left direction and is fixed, the cutting

width of the leather 2 gets wider, and on the contrary, when the support member

5 is moved in the right side and is fixed, the cutting width of the same gets

narrower. The cutting portions of the leather 2 cut by the skiver 1 is shown by

the dotted lines in Figure 6.

When the leather 2 is loaded, the leather 2 is moved by the rotation of

same driving force as the force used for driving the skiver 1.

When the leather 2 driven by the driving of the support roller 4 reached

angle. The slanted cutting is achieved based on the cylindrical shape of the

skiver 1. A stable and accurate cutting is achieved by the pressing member 3

that is provided on the skiver 1 and presses the leather 2.

In the operation of the skiving machine 100, the leather 2 always

contacts in the pressing member 3 and the support member 5 and is moved.

Therefore, in the present invention, the leather 2 is smoothly moved.

A pressing roller β is installed in a contact portion of the leather 2 of the

support member 5.

Therefore, in the conventional art, a strong friction occurs based on a

direct contact with the leather 2 without rollers, so that the leather 2 is not properly moved. In particular, in the case that bonds or foreign substances are

stuck on the leather 2, the pressing member 3 or the support member 5, the

movement of the leather is retarded more badly, so that the leather 2 is badly

cut. However, in the present invention, the leather 2 is smoothly moved based

on a guide of the pressing member 6 and the lateral side support roller 7 without

any interference.

Namely, when the leather 2 is transferred, the leather 2 is supported

and guided by the pressing roller 3 installed in the pressing member 3 and the

support roller 4 installed in the lower side of the leather 2, and the leather 2 is

moved toward the skiver 1. At this time, the pressing roller 6 rolls together with

the leather 2, so that the leather 2 is effectively moved without any resistance.

Therefore, it is possible to achieve an accurate cutting surface.

The lateral side support roller 7 installed in the support member 5 also

enables a smooth transfer of the leather together with the pressing roller 6.

Namely, the support member 5 plays a role of adjusting the cutting width of the

leather. In the present invention, the lateral side support roller 7 also helps a

smooth movement of the leather 2.

As shown in Figure 7, in order to determine the cutting width of the

leather 2, the fixing bolt 9 is loosened, and the support member 5 is moved in

the left and right directions, and then the fixing bolt 9 is fixed again. In the above

state, the end portion of the leather 2 indicated by the two-dot line inserted up to

the lateral side support roller 7, so that the cutting width is determined. When one side of the leather 2 is cut in the above manner, the cut

portions of the leathers 2 are connected and bonded, so that a uniform

thickness of the leathers 2 is obtained. Therefore, even when two leather pieces

are bonded, a good quality leather product having a uniform surface is

fabricated.

Industrial Applicability

As described above, in the present invention, the pressing roller 6 and

the lateral side support roller 7 are installed in the contact portions between the

pressing member 3 and the support member 5 and the leather 2, so that a

smooth movement of the leather 2 is achieved. One side of the leather 2 is

accurately cut, so that there are not any protrusions on the bonded portions of

the leather pieces 2. Therefore, it is possible to fabricate a good quality leather

product. The productivity is enhanced. As the present invention may be embodied in several forms without

departing from the spirit or essential characteristics thereof, it should also be

understood that the above-described examples are not limited by any of the

details of the foregoing description, unless otherwise specified, but rather

should be construed broadly within its spirit and scope as defined in the

appended claims, and therefore all changes and modifications that fall within

the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

10

Claims

Claims:

1. In a skiving machine 100 for leather that includes a skiver having a

cylindrical rotational blade, a pressing member 3 and a support roller 4 that

2 in the upper and lower sides of the blade of the skiver 1 , and a support

member 5 that supports the cutting portion of the leather 2 cut vertically with

width of the leather, a skiving machine for leather, comprising: a pressing roller 6 installed at a contact portion with a leather 2 below

the pressing member 3; and a lateral support roller 7 installed at a contact portion with a cutting

surface of the leather 2 that is an end of the support member 5.

2. The machine of claim 1 , wherein said pressing roller 6 has the same

curvature rotation surface as an outer diameter of the blade of the skiver 1.

11 FIG. 1

FIG. 2

FIG. 3

2/6 FIG. 4

3/6 FIG. 5

4/6 FIG. 6 ft

6 ₂

FIG. 7

5/6 FIG. 8

6/6