JP2005040544A - Shoe last for adjusting shoe to mitigate shoe pressure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce pain in foot by adjusting and mitigating shoe pressure by using a shoe last which is obtained by easily copying the three-dimensional shape of the foot of each person with high precision. <P>SOLUTION: The shoe last is divided in structure, so as to easily perform a shoe adjustment work. The whole shoe last is constituted by the combination of a shoe last front half part 1 manufactured by the three-dimensional copy of a foot front half part with a shoe last rear half part 2 manufactured by the standard shape of a heel part. Then the shoe last of each person is easily manufactured. Three-dimensional copying is easily performed by operating a copy scrape device, where a rotary scrape blade tool and a copy disk with a diameter being the same as that of the tool are coaxially arranged in parallel at fixed interval, while moving a mobile device, where the foot and a shoe last front half part scrape block are arranged at fixed interval. A contact sensor is incorporated on the circumference of the copy disk or in a bearing part. A sensor control circuit for detecting contact between the copy disk and the foot, electrically displaying it, and electrically controlling the rotation of the rotary scrape tool is incorporated in the copy scrape device. Consequently the shoe last front half part 1 is manufactured with high precision. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a foot adjustment for adjusting a shoe to relieve pressure on the shoe and a method of manufacturing the foot.

As part of the shoe manufacturing process, conventional shoe molds measure the required dimensions of customers' feet for creating custom shoes as three-dimensional numerical data, and this data is converted into female CAD data for footwear creation. The converted CAD data and NC machine tool were used to create an integrated foot shape.
Japanese Patent Publication No. 7-14561 Japanese Patent Laid-Open No. 11-161316 Japanese Patent Laid-Open No. 2003-52416

In addition, for the purpose of maintaining the shape of the shoe or adjusting the shoe to fit the foot length, foot width, etc., the design of the shoe shaper was modeled on a shoe-shaped model of a general shape. .
Design registration number 962303 Design registration number 963238 Design Registration No. 1008612 Design Registration No. 1093701

Traditionally, each shoe mold is manufactured using computer-aided CAD data collection and NC machine tools as part of the process of manufacturing custom-made shoes that fit the customer's feet. Various methods have been developed. Shoe molds manufactured by these methods are highly accurate, but are difficult to use for shape retention and adjustment of shoes as a shoe shaper because it is an integrated shoe tree mold for manufacturing shoes. There was a problem.

The production of shoe molds by these methods requires specialized equipment and technicians, and therefore, there is a problem that it is not possible to easily and economically produce the shoe molds of each customer at ordinary shoe stores. there were.

Commercially available shoe shapers are modeled on a standard shoe mould for the purpose of maintaining the shape of the shoe or adjusting the length and width of the shoe. The shape of the foot may change depending on the living environment and the shape of the shoe that you keep wearing, so the foot shape is not only different from the standard shoe tree type, but also varies greatly from person to person. There is a problem that the shape retainer cannot relieve the pressure on the shoe by accurately fitting the shoe to the shape of each individual foot.

For the front half of the foot from the toes to the instep (approximately 60% of the length of the foot), the sole shape is duplicated in plan and the outer shape of the upper part of the foot is reproduced in three dimensions. For the first half of the foot shape and the second half of the foot from the instep to the toe point (approximately 40% of the length of the foot), the sole shape is duplicated in a plane and the upper surface of the foot is standard. Produces a foot shape that combines the three-dimensional shape of the buttocks and the latter half of the foot shape that is easy to put in and out of shoes.

In the first half of the foot type, which comprises a moving device and a copying machine, the moving device is used for cutting the foot and first half of the foot at the same distance as the distance between the copying disk of the copying machine and the rotary cutting tool. It is a device that moves blocks in parallel on the same plane and moves one-dimensionally in the direction of the toe and toe of the foot, and the copying and scraping device moves in a two-dimensional space orthogonal to the moving direction of the moving device and rotates It has a structure in which a cutting tool and a copying disk with the same radius are arranged in parallel on a concentric axis at regular intervals, and a sensor incorporated on the circumference of the copying disk or on the rotating shaft of the copying disk is connected to the copying disk and the foot. A sensor control circuit that controls the power supply of the rotary cutting blade tool by detecting the contact of the tool and electrically displaying the contact is built-in, and when the copying disk is operated so as to follow the outer shape of the foot, the copying is performed. In conjunction with movement The front half of the foot can be conveniently and easily reproduced by three-dimensionally reproducing the outer shape of the front half of the foot using the first half of the foot cutting device, which is a device for the cutting blade tool to cut the block for cutting the first half of the foot. Manufacture with high accuracy.

Much of the foot pain caused by shoe compression occurs in the first half of the shoe, and there has been a long-awaited development of a device that easily relieves pressure on the shoe. Since the front half of the foot type according to the present invention is made by three-dimensionally duplicating the front half of the foot according to the shape of each individual foot, the pressure part of the shoe is accurately adjusted using the foot type of the present invention. Thus, it is possible to fit the foot of each person wearing the shoes as much as possible, and the pressure on the shoes causing foot pain can be relieved.

The foot mold according to the present invention has a split structure in which the front half of the foot is formed by three-dimensionally duplicating the front half of the foot in accordance with the shape of each person's foot and the latter half of the foot shaped in the shape of a standard heel. Therefore, it is easy to use each foot shape, and it is easy to use as a shape retainer for shoes.

The foot mold manufacturing method according to the present invention is manufactured by dividing the entire foot mold into a first half of the foot that requires high-precision three-dimensional replication and a second half of the foot that replicates the standard heel shape; , A moving device that moves the foot and the first half block of the foot mold in a one-dimensional direction, and a copying machine that scrapes the foot block while following the foot by moving the copying disk and the rotary cutting blade in a two-dimensional space on a concentric axis Since the first half of the foot mold is three-dimensionally replicated by the first half of the foot mold scraping device combined with the apparatus, the foot mold can be manufactured with simple equipment that can be installed in a normal store.

Sensor control that controls the power supply of the rotary cutting tool by detecting the contact between the copying disk and the foot by a sensor built in the circumference of the copying disk or on the rotating shaft of the copying disk and displaying the contact electrically A three-dimensional copy of the first half of the foot mold can be manufactured with high accuracy by the first half shaving machine that incorporates the circuit into the copying machine.

First, create the left foot. First, on the sole pattern created by copying the contours of the soles, mark the base of the toes of the second and third toes as point P1, and mark the foot toe as the end point of the foot as point P2. At the same time, the corresponding point of the point P2 is also marked on the heel point on the foot side. A straight line L1 connecting the point P1 and the point P2 is used, and a straight line L2 orthogonal to the straight line L1 is drawn at a point P3 that is a half of the foot length in the direction from the point P1 to the point P2 (FIG. 2). This straight line L2 becomes the boundary line between the first half of the foot shape and the second half of the foot shape.

Invert the sole pattern paper, position L2 so that it is the boundary between the first half of the foot mold block and the second half of the foot mold block, and place the sole on the bottom of the first half mold block The contour lines P1, P3 are copied, and the contour lines P2, P3 of the soles are respectively copied to the bottom surface of the block for cutting the rear half of the foot mold. Since the length from the toe to P3 is approximately 60% of the foot length, the length of the first half of the foot mold is approximately 60% of the foot length, and the length of the second half of the foot mold is approximately 40% of the foot length. It becomes.

The foot mold front half cutting block is cut along the contour of the sole, and the upper half is cut along the front projection of the foot (FIG. 3).

Cut out the second half part cutting block along the contour of the sole. Furthermore, it is processed into a shape that is easy to put in and out of shoes, and the basic foot mold latter half is manufactured (Fig. 4).

The first half of the foot mold is manufactured by cutting out a three-dimensional replica of the first half of the foot from 3 using a foot former half shaving device. The foot type first half shaving device is composed of a moving device 8 and a copying shaving device. In 8, positions for fixing the feet 10 and 3 at regular intervals are determined, and marks P 1 and P 2 are placed at the 10 fixed positions. Marks P1 and P3 are attached to the fixed position 3 (FIG. 5).

The copying machine is configured such that an arm group 7 in which a rotary cutting blade 5 and a copying disk 6 having the same diameter are placed in parallel on a concentric axis move in a two-dimensional space orthogonal to 8. 7 is constructed so that a plurality of arms can be hinged to move in a two-dimensional space, and has a sufficient size so that 6 can move freely following 10 (FIG. 6).

10 and 3 are juxtaposed on a moving device 8 moving in a one-dimensional direction at a predetermined interval. At this time, the position is determined according to the P1 and P2 marks for 10 on the moving device, and the position 3 is fixed to the P1 and P3 marks for 3 on the moving device (FIG. 5).

Move 8 so that 6 is at the position of the fingertip of 10, and simultaneously fix the position of 8 so that 5 is at the forefront of 3. 6 is operated so as to move while following the outer shape of the upper surface portion of 10. At the same time, 5 cuts 3 in conjunction with the copying movement of 6 (FIG. 6).

8 is moved in the direction of the saddle point of 10 by the thickness of 5, and 3 is sharpened while operating 6 in the same manner. This is repeated, and 8 is moved until 6 comes to the instep, and 3 is shaved to complete the basic production of the first half of the foot mold.

For 3 and 4 after basic production, the toe part is processed into a standard shape, and the curved surface is processed to match the shape of the sole such as the curved surface around the sole and the concave shape of the arch. Finish the surface smoothly. Combining the finished first half 1 and the second half 2 of the foot shape completes the left foot shape (FIG. 1).

Similarly, the same operation is repeated for the right foot to complete the right foot.

The completed foot pattern of the left foot and the foot pattern of the right foot are combined into a pair of foot patterns.

A foot mold is made using paulownia. First, an embodiment for producing a left foot foot mold having a foot length of 220 mm will be described. The standard foot block for cutting the first half of the foot must be large enough to accurately reproduce the first half of the foot, but the shape of the bottom of the foot and the shape of the buttocks are necessary. Is a size that can be secured.

By fixing the distance between P1 and P3 to 100 mm in the sole pattern paper, it can be fixed on the moving device 8 in a fixed manner. If the distance between P1 and P3 is 100mm, 110mm, and 120mm according to the length of the foot, it can cope with the difference in foot length. FIG. 3 shows 3 in which the sole mold is copied and the sole mold is cut out, and the upper half is cut out along the front projection view of the leg. FIG. 4 shows 4 obtained by copying the sole pattern paper, cutting the sole mold, and processing it into a shape that can be easily put in and out of shoes.

FIG. 5 shows a moving device 8 in which the legs 10 and 3 are juxtaposed with an interval of 200 mm and moved in a one-dimensional direction at a constant interval. On this 8, marks P1 and P3 and straight lines L1 and L2 for fixing the positions of 10 and 3 at 200 mm apart are attached. P1 prepares a protruding fixture and 10 and 3 Fix so that it does not slip.

8 is a combination of a chevron spring and a 2.5 mm pitch saw-tooth guide, and moves while being chopped by 2.5 mm.

5 is realized by attaching a wood grinder blade for woodworking to a 100v electric disk grinder with a diameter of 100mm and a groove width of 5mm. Since the thickness of a normal saw blade for woodworking cutting is small, 3 cannot be cut smoothly in conjunction with 6, but since the edge cutter blade has a sufficient thickness, 3 can be cut smoothly. An electric disk grinder is attached with a 100 mm diameter wood grinder blade for cutting, but if a rotary cutting blade tool with a small diameter dedicated to the foot is used, the details of the shape of the foot can be reproduced more precisely in three dimensions.

The diameter of 6 is set to 102 mm, the thickness is set to 5 mm, the diameter of the bearing portion of 6 is set to be 2 mm larger than the diameter of the shaft of 6, the detected displacement of the lever switch is set to 1 mm, The position of the bearing 6 is adjusted so that the axis of the cutter blade coincides with the concentric axis (FIG. 7). Since the foot 10 has some deformation in the living body and it is difficult to grasp a completely accurate outer shape, and there are many customers who require a larger foot shape than the foot body, a copying disk having a diameter of 103 mm and a 104 mm diameter A copying disk may be used.

As for the sensor control circuit 6, the sensor using the lever switch for the bearing portion 12 can be constructed at a lower cost than the system in which the pressure sensor electronic elements are arranged on the circumference of 6. Furthermore, by changing the shape of the lever that senses the displacement from a straight shape to a character shape, the scanning disk can detect not only the vertical direction but also the displacement of the shaft 13 due to contact from an oblique direction, and a wide detection range. Therefore, it is possible to construct a high-precision copying machine at low cost. By configuring the shape of the lever for detecting the displacement into a U-shape, the lever switch can detect a wide range of 6 displacements (FIG. 7).

A copy that is fixed so that 6 and 5 are set on a concentric axis at a position 200 mm apart on the arm 18 on the distal end side of a planar arm group composed of two planes that can move in a two-dimensional space. Build a shaving machine. 6 fixed to the arm 18 has a mechanism for adjusting the position, and the position of 6 is adjusted so as to be set on the axis concentric with 5. (Fig. 8)

If an operation is performed so that 6 of the copying and scraping device 6 comes to the tip of a toe and 6 follows 10, 5 that moves in conjunction with 6 cuts 3. While moving 8 so that 6 moves from the fingertip of 10 to the instep, 3 is shaved and the first half of the foot shape is shaved.

For the manufactured 3 and 4, the curved surface processing is performed according to the curved surface of the periphery of the sole and the shape of the concave sole such as an arch, and the production of 1 and 2 is finished by finishing the surface smoothly.

Combine 1 and 2 into the left foot.

Next, repeat the same operation for the right foot to produce the right foot.

Finally, the left foot pattern and the right foot pattern are combined to form a pair of foot patterns.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure of the foot type | mold of this invention, (A) is a front view, (B) is a top view, (C) is a perspective view. It is a pattern that copied the outline of the sole. It is a block for cutting out the front half of the foot mold, cut along the contour of the sole and cut off the upper half along the front projection of the foot, (A) is a front view, (B) is a plan view, C) is a perspective view. It is a block for cutting off the rear half of the foot mold in which the shape of the toe portion is cut along the contour line of the sole, (A) is a front view, (B) is a plan view, and (C) is a perspective view. . It is a figure of the moving apparatus which displayed the fixed position of the block for a leg | foot and a foot type | mold first half part cutting out. It is a figure of a foot type | mold first half part scraping apparatus, (A) is a front view, (B) is a right view. Pressure sensor for copying disk using lever switch It is a perspective view of the foot type first half shaving device used in the example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Foot mold first half part 2 Foot mold latter half part 3 Foot mold first half part cutting block 4 Foot mold second half part cutting block 5 Rotating cutting blade tool 6 Copying disc 7 Arm rod group 8 Moving device 9 Foot mold first half part cutting The base 10 of the take-out device 11 The base 11 of the follower disk bearing 12 The follower disk bearing 13 The follower disk shaft 14 The switch body 15 The lever 17 processed to the on / off control terminal 16 of the electric circuit The lever displacement detecting projection 18 The arm 19 on the tip side The moving device Guide P1 Point P2 at the base of the second toe and third toe on the sole pattern P2 Foot toe point P3, the last end point of the foot on the sole pattern P1 to P2 on the sole pattern A straight line orthogonal to the straight line L1 at the straight line L2 P3 connecting the points L1 P1 and P2 which are one-half of the foot length in the direction of

Claims (2)

For the front half of the foot from the toes to the toe, the foot shape is duplicated in plan and the outer shape of the upper surface of the foot is three-dimensionally duplicated. For the second half of the foot up to the toe point, the foot shape is a combination of the sole shape and the upper part of the foot combined with the second half of the foot shape that is made of a standard three-dimensional shape of the heel. In the first half of the foot type, which comprises a moving device and a copying machine, the moving device is used for cutting the foot and first half of the foot at the same distance as the distance between the copying disk of the copying machine and the rotary cutting tool. It is a device that moves blocks in parallel on the same plane and moves one-dimensionally in the direction of the heel point of the foot and the tip of the toe, and the copying machine moves in a two-dimensional space orthogonal to the moving direction of the moving table, and rotates. It has a structure in which a cutting tool and a copying disk with the same radius are arranged in parallel on a concentric axis at regular intervals, and a sensor incorporated on the circumference of the copying disk or on the rotating shaft of the copying disk is connected to the copying disk and the foot. A sensor control circuit that controls the power supply of the rotary cutting blade tool by detecting the contact of the tool and electrically displaying the contact is built-in, and when the copying disk is operated so as to follow the outer shape of the foot, the copying is performed. In conjunction with movement The front half of the foot mold according to claim 1 is manufactured by three-dimensionally reproducing the outer shape of the upper surface of the foot using a front half half shaving apparatus, which is a device for the cutting blade tool to cut the block for cutting the first half of the foot mold. Method.

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