JPH05301570A - Manufacture of leathered steering wheel and equipment therefor - Google Patents

Abstract

PURPOSE:To drastically shorten the time for sewing work by providing both a pressure- fitting process, in which upper and lower frames are advanced to push/press a leather material from the top and bottom sides so that the leather material is press-fitted to a ring part, and a roller-finishing process, in which an end part of the leather material is adhered to the ring part by means of roller finishing. CONSTITUTION:An upper frame 18 is stopped at a position at which a distance between the frame 18 and a ring part 31 is equal to a distance between a lower frame 10 and the ring part 31. At the same time, by elongating cylinder devices 24 of lateral, or right and left, frame mechanisms 21, 22, lateral frames 26 are advanced, so that pressure-contact surfaces 27 of these lateral frames 26 are pushed against a surface part of the ring part 31 via a leather material 33, thereby holding this ring part 31. Next, by operating cylinder devices 16, 8 of upper-and-lower-side jig parts 2, 1, upper and lower frames 18, 10 are advanced simultaneously, so that the leather material 33 is press-fitted to the ring part 31 via a cushion body 30. In this state, the ring part 31 is taken out of a manufacturing device, and an end part 33a of the leather material 33 is adhered to the ring part 31 by means of a roller-shaped pushing device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for manufacturing a leather-wrapped steering wheel (steering wheel) for an automobile or the like.

[0002]

2. Description of the Related Art Conventionally, a leather-wrap handle of this type has been manufactured by sewing. That is, the leather material punched into the outer peripheral shape of the ring part is temporarily fixed with double-sided tape,
Thread a thread through the pierced hole that is pulled out of the leather material and sew the leather material. After threading is completed, fix the wrinkles in the leather material and tighten the threads, and finally sew.

Further, in the technique disclosed in Japanese Patent Laid-Open No. 3-281477, a leather material for covering the ring portion is vertically and horizontally provided in four layers.
It is divided into rollers and press-bonds.

[0004]

However, in the case of the above-mentioned conventional sewing, 1.5 hours to 2.
It takes about 0 hr and it is difficult to automate and save labor because it is a manual work by a skilled worker.
The technique disclosed in Japanese Patent No. 2828177 has a problem in that it is difficult to position the leather material, and it is difficult to finish the ends of the leather material together.

The present invention has been made in view of the above problems, and the first object thereof is to realize uniform sticking of the leather material and to significantly shorten the conventional sewing work time. It is an object of the present invention to provide a method of manufacturing a leather-wrap handle that can be shortened to the following.

A second object of the present invention is that wrinkles are less likely to be generated on the leather material, and even if wrinkles are generated, the wrinkles can be uniformly dispersed and the wrinkles are not noticeable. Moreover, it is an object of the present invention to provide a method for manufacturing a leather-wrap handle in which the cushion body can be easily replaced and the cost merit when automated is increased.

Further, a third object of the present invention is to realize the attachment of a uniform leather material and to enable the manufacture of a leather-wrapped handle capable of significantly shortening the conventional sewing work time. An object is to provide an apparatus for manufacturing a winding handle.

[0008]

In order to achieve the above-mentioned first object, a method for manufacturing a leather-wrap handle according to the present invention is provided with at least one of a ring surface and an inner surface of a leather material sewn in an annular shape. An adhesive applying step of applying an adhesive, an arranging step of arranging the leather material on the outside of the ring portion while receiving the ring portion, and advancing the lateral piece from the side of the ring portion to bring the pressure contact surfaces of the lateral pieces. Pressing and pinching process of pressing the ring part by pressing it against the surface part of the ring part through the skin material, and crimping to press the skin material from above and below by advancing the upper and lower pieces to press the skin material to the ring part. It is characterized by comprising a step and a roller finishing step of adhering the end portion of the leather material to the ring portion by roller finishing.

In order to achieve the above-mentioned second object, the method for manufacturing a leather-wrap handle according to the present invention is the method for manufacturing a leather-wrap handle according to claim 1, wherein the pressing and clamping step is performed. In addition, a pushing process is provided in which the cushion mechanism is moved and the upper and lower cushion bodies uniformly push the leather material inward, and in the crimping process, the upper and lower pieces are advanced to raise and lower the leather material through the cushion body. It is designed to be pressed from the bottom to press the leather material against the ring portion.

In order to achieve the above-mentioned third object, the apparatus for manufacturing a leather-wrapped handle of the present invention receives a ring portion and a handle receiving mechanism for arranging a leather material outside the ring portion, The piece is advanced from the side of the ring part, and the pressure contact surfaces of these horizontal pieces are pressed against the surface part of the ring part through the leather material to press and grip this ring part. An upper piece mechanism that presses the material from above and crimps the leather material to the ring portion, a lower piece mechanism that advances the lower piece and presses the leather material from below and presses the leather material to the ring portion, and the end portion of the leather material And a terminal finishing mechanism for adhering to the ring portion by roller finishing.

[0011]

According to the method of the present invention, the leather material on the outside of the positioned ring portion is laterally pressed by the horizontal piece to adhere to the ring portion, and the leather material is vertically pressed by the upper and lower pieces. By pressing from three directions so as to adhere to the ring part, uniform attachment of leather material is realized,
Moreover, by sticking the end portion of the leather material on which stress is concentrated with the roller finish, the conventional sewing work time can be greatly shortened.

According to the second aspect of the present invention, the cushion mechanism is moved to move the upper and lower cushion bodies forward to uniformly push the leather material inward, and then the leather material is applied to the ring portion through the cushion body. Since it is pressed, wrinkles are less likely to be generated on the leather material, and even if wrinkles are generated, the wrinkles can be uniformly dispersed and the wrinkles are less noticeable. Moreover, the cushion body can be easily replaced, and the cost merit when automated is increased.

Further, according to the third aspect of the present invention, it is possible to manufacture the leather-wrap handle which can realize the uniform attachment of the leather material and can significantly reduce the conventional sewing work time.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a structural explanatory view of an apparatus for manufacturing a leather wrapped handle according to an embodiment of the present invention. This device for manufacturing a leather-wrapped handle includes a lower jig portion 1 and an upper jig portion 2.
And the lower jig portion 1 has a jig plate 3,
A handle receiving mechanism 6 is provided at the center of the upper surface of the jig plate 3. The handle receiving mechanism 6 receives a ring portion, which will be described later, and arranges the leather material outside the ring portion.

Further, a lower piece mechanism 7 is provided on the upper surface of the jig plate 3 centering on the handle receiving mechanism 6. The lower piece mechanism 7 is provided with a plurality of cylinder devices 8 fixed on the jig plate 3, and a flat ring-shaped piece receiving member 9 is fixed to a piston rod 8a of these cylinder devices 8. The lower piece 10 is fixed to the piece receiving member 9. The lower piece 10 has a flat annular shape, and an abutting surface portion 11 and a pressure contact surface 12 on the outer peripheral side are formed on the upper surface thereof. The pressure contact surface 12 is a flat annular shape, and its cross section has a circular shape. It has an arc shape that is divided into approximately 1/4.

Further, guide posts 4 are provided upright on the jig plate 3, and a main cylinder 13 is provided above these guide posts 4 via a support member 5, and the guide posts 4 are also provided. A jig plate 14 of the upper jig portion 2 is provided on the upper and lower sides so that it can slide up and down. The piston rod 13a of the main cylinder 13 is attached to the jig plate 1
It is connected to 4.

An upper piece mechanism 15 is provided on the lower surface of the jig plate 14 of the upper jig portion 2. The upper piece mechanism 15 is provided with a plurality of cylinder devices 16 fixedly mounted on the jig plate 14, and a planar ring-shaped piece receiving member 17 is fixed to a piston rod 16a of these cylinder devices 16. The upper piece 18 is fixed to the piece receiving member 17.
The upper piece 18 has a plane annular shape, and an abutting surface portion 19 and an outer peripheral side pressure contact surface 20 are formed on the lower surface thereof. The pressure contact surface 20 is a plane annular shape, and its cross section has a circular shape. Almost 1
It has an arc shape divided into quarters.

On the upper surface of the jig plate 3 of the lower jig portion 1, left and right lateral piece mechanisms 21 and 22 are installed. The left horizontal piece mechanism 21 includes a support bracket 23 fixed to the upper surface of the jig plate 3, and a cylinder device 24 is fixed horizontally to the support bracket 23. A planar semicircular holding frame 25 is attached to the tip of the piston rod 24a of 24, and a planar semicircular lateral piece 26 is also held by the holding frame 25. The horizontal piece 26 is vertically divided into two parts, and the end surface of the horizontal piece 26 is formed as a pressure contact surface 27 having a semicircular cross section.

Piston rod 2 of the cylinder device 24
A cushion mechanism 28 is movably attached to 4a. The cushion mechanism 28 is provided with a holding member 29, which is slidably attached to the piston rod 24a, and the holding frame 25 can be slidably inserted into the holding member 29. is there. Then, on the upper and lower surface portions 29a and 29b of the holding member 29, there are attached flat semicircular cushion bodies 30. These cushion bodies 30 are projected forward and slidably contact the upper and lower surfaces of the holding frame 25. ing. The holding member 29 is attached to the tip of the piston rod of another cylinder device (not shown). The right horizontal piece mechanism 22 has the same structure as the left horizontal piece mechanism 21 described above.

Next, a method for manufacturing a leather-wrap handle using the above manufacturing apparatus will be described.

Reference numeral 31 is a ring portion of the handle, and 33 is a leather material sewn in an annular shape. Then, in the adhesive applying step, the adhesive is applied to at least one of the surface of the ring portion 31 and the inner surface of the leather material 33. In this case, the heat-activatable type (or re-activatable type) is used for the adhesive, and the adhesive is used at 3 ° C at 80 ° C before being set in the handle receiving mechanism 6.
Heated for about a minute.

The ring portion 3 to which the adhesive is applied in this way
1 and the leather material 33 are set in the apparatus by the handle receiving mechanism 6. In this case, the lower piece 10 is the ring portion 3
It is located at a certain distance below 1.

Next, the main cylinder 13 is extended to lower the upper jig portion 2 to move the upper piece 18 into the ring portion 31.
And the lower piece 10 is stopped at the same distance. At the same time, the cylinder devices 24 of the left and right horizontal piece mechanisms 21 and 22 are extended to move the horizontal pieces 26 forward so that the pressure contact surfaces 27 of these horizontal pieces 26 are pressed against the surface of the ring portion 31 via the leather material 33. The lever ring portion 31 is gripped (clamped). This state is shown in FIGS. 2 (a) and 2 (b).

Next, the cushion mechanism 28 is moved by the operation of the other cylinder device, and the upper and lower cushion bodies 30 are slidably brought into contact with the upper and lower surfaces of the holding frame 25 and moved forward to move the skin material 33 inward. Evenly. This state is shown in FIG.

Next, the cylinder devices 16 and 8 of the upper and lower jig parts 2 and 1 are operated to move the upper and lower pieces 18 and 10 forward at the same time, and the leather material 33 is ringed through the cushion body 30. Crim the part 31. This state is shown in FIG.

The skin material 33 is bonded to the ring portion 31 as described above. In this way, when the skin material 33 is bonded to the ring portion 31, a clearance T is generated between the upper and lower pieces 18, 10 and the terminal portion 33a of the skin material 33 is not pressed.

In this state, the ring portion 31 is taken out from the manufacturing apparatus, and as shown in FIG.
3a is bonded to the ring portion 31 by a roller-shaped pressing tool 34. This roller-shaped pressing tool 34 is used because the stress generated in the step of applying the skin material 33 is the skin material 3
3 is concentrated on the terminal portion 33a and is for blurring this.

(Embodiment 2) In this embodiment, FIG.
As shown in FIG. 3, the cushion layers 35 are provided on the pressure contact surfaces 20 and 12 of the upper and lower pieces 18 and 10, and the portion of the skin material 33 that covers the outer region of the ring portion 31 is not wrinkled. The left and right lateral piece mechanisms 21 and 22 have a cushion mechanism 2
Not equipped with 8.

In the adhesive applying step, the adhesive is applied to at least one of the surface of the ring portion 31 and the inner surface of the leather material 33.

The ring portion 3 to which the adhesive is applied in this way
1 and the leather material 33 are set in the apparatus by the handle receiving mechanism 6. In this case, the lower piece 10 is the ring portion 3
It is located at a certain distance below 1.

Next, the main cylinder 13 is extended to lower the upper jig portion 2 to move the upper piece 18 into the ring portion 31.
And the lower piece 8 is stopped at the same distance. At the same time, the cylinder devices 24 of the left and right horizontal piece mechanisms 21 and 22 are extended to move the horizontal pieces 26 forward so that the pressure contact surfaces 27 of these horizontal pieces 26 are pressed against the surface of the ring portion 31 via the leather material 33. The lever ring portion 31 is gripped (clamped).

Next, the cylinder devices 16 and 8 of the upper and lower jig portions 2 and 1 are operated to move the upper and lower pieces 18 and 10 at the same time to push the leather material 33 with the cushion layer 35 and press the ring portion. Crimp to 31. In this way, when the leather material 33 is bonded to the ring portion 31, the upper, lower pieces 18, 1
A clearance T is generated between 0, and the end portion 3 of the leather material 33 is
3a is not pressed.

In this state, the ring portion 31 is taken out from the manufacturing apparatus, and as shown in FIG.
3a is bonded to the ring portion 31 by a roller-shaped pressing tool 34.

Therefore, according to the above embodiment, the leather material 33 on the outside of the positioned ring portion 31 is laterally pressed by the horizontal piece 26 to be bonded to the ring portion 31,
By pressing the leather material 33 from above and below by the upper and lower pieces 18 and 10 in three directions so as to adhere to the ring portion 31, uniform attachment of the leather material 33 is realized,
Moreover, the skin material 33 inside the ring portion 31 where wrinkles easily occur
Was pressed against the ring portion 31 via the cushion layer 35, and the stress-concentrated end portion 33a of the leather material 33 was pasted with a roller finish, so that the conventional sewing work time took 1.5 hr to 2.0 hr. I was able to save about 20 to 30 minutes including the pasting and repair.

[0036]

As described above, the method for manufacturing a leather wrapped handle according to the present invention comprises an adhesive applying step of applying an adhesive to at least one of the surface of the ring portion and the inner surface of the leather material sewn in an annular shape. An arrangement step of arranging the leather material on the outside of the ring portion while receiving the ring portion, and advancing the horizontal piece from the side of the ring portion so that the pressure contact surfaces of these horizontal pieces are placed on the surface portion of the ring portion through the leather material. Pressing process to press and hold the ring part by pressing and pressing, the pressing process of advancing the upper and lower pieces to press the leather material from above and below to press the leather material to the ring part, and the end part of the leather material to the roller. And a roller finishing step of adhering to the ring portion by finishing.

Therefore, the leather material on the outside of the positioned ring portion is laterally pressed by the horizontal piece to adhere to the ring portion, and the leather material is vertically pressed by the upper and lower pieces to adhere to the ring portion. By pressing from three directions as described above, uniform attachment of the leather material is realized, and the end portion where the stress of the leather material is concentrated is pasted with the roller finish, and the conventional sewing work time is greatly reduced. can do.

The method for manufacturing a leather-wrapped handle according to the present invention is the method for manufacturing a leather-wrapped handle according to claim 1, wherein the cushion mechanism is moved between the pressing and clamping step and the crimping step. A cushioning process is provided to push the leather material inward evenly, and in the crimping process, the upper and lower pieces are advanced to press the leather material from above and below through the cushion body to press the leather material to the ring portion. It is the one.

Therefore, since the upper and lower cushion bodies are moved forward by pushing the skin material uniformly inwardly by moving the cushion mechanism, the skin material is less likely to be wrinkled, and even if the wrinkles are formed, the cushion body is not easily wrinkled. By pressing the leather material against the ring portion through the wrinkles, the wrinkles can be uniformly dispersed, and the wrinkles are less noticeable. Moreover, the cushion body can be easily replaced, and the cost merit when automated is increased.

The apparatus for manufacturing a leather-wrapped handle according to the present invention receives the ring portion, a handle receiving mechanism for arranging the leather material outside the ring portion, and a horizontal piece forward from the side of the ring portion. A horizontal piece mechanism that presses the pressure contact surface of the horizontal piece against the surface of the ring through the skin material and presses and grips this ring portion, and a horizontal piece mechanism that advances the upper piece and presses the skin material from above to bring the skin material to the ring portion. An upper piece mechanism for crimping, a lower piece mechanism for advancing the lower piece to press the leather material from below and crimping the leather material to the ring portion, and a terminal finishing mechanism for adhering the end portion of the leather material to the ring portion by roller finishing. It is equipped with and.

Therefore, it is possible to manufacture a leather-wrapped handle which can realize uniform attachment of the leather material and can significantly reduce the conventional sewing time.

[Brief description of drawings]

FIG. 1 is a structural explanatory view of a device for manufacturing a leather wrapped handle according to the present invention.

FIG. 2 is a process explanatory view of an embodiment of a method for manufacturing a leather-wrapped handle of the present invention, in which (a) is a cross-sectional view showing a state before a leather material is bonded. (B) is a cross-sectional view showing a state in which the horizontal piece presses the leather material against the ring portion. (C) is a sectional view showing a state in which the cushion mechanism is activated after the horizontal piece presses the leather material against the ring portion. (D) After the horizontal piece presses the leather material against the ring part and the cushion mechanism is activated,
It is sectional drawing which shows the state which the lower piece fell.

FIG. 3 is a process explanatory view of another embodiment of the method for manufacturing a leather-wrapped handle of the present invention, in which (a) is a cross-sectional view showing a state before adhesion of a leather material. (B) is a cross-sectional view showing a state in which the upper piece and the lower piece move forward after the horizontal piece presses the leather material against the ring portion. (C) is an explanatory view of terminal finishing in which the terminal portion of the leather material is bonded to the ring portion by roller finishing.

[Explanation of symbols]

 10 Lower piece 18 Upper piece 26 Horizontal piece 31 Ring part 33 Skin material 33a Terminal part

Claims (3)

[Claims] 1. An adhesive applying step of applying an adhesive to at least one of a surface of a ring portion and an inner surface of a leather material sewn in an annular shape, and receiving the ring portion and arranging the leather material outside the ring portion. And a step of advancing the horizontal piece from the side of the ring portion to press the pressure contact surfaces of these horizontal pieces against the surface portion of the ring portion through the leather material to press and grip the ring portion, and , A crimping step of advancing the lower piece and pressing the leather material from above and below to crimp the leather material to the ring portion,
A method of manufacturing a leather-wrapped handle, comprising: a roller finishing step of adhering an end portion of a leather material to a ring portion by roller finishing. 2. Between the pressing and sandwiching step and the crimping step, there is provided a pushing step of moving the cushion mechanism to uniformly push the leather material inward with the cushion bodies above and below the upper and lower pieces in the crimping step. 2. The method for manufacturing a leather wrapped handle according to claim 1, wherein the leather material is pressed forward and downward through the cushion body to press the leather material against the ring portion. 3. A handle receiving mechanism for receiving a ring part and arranging a leather material on the outside of the ring part, and a lateral piece advancing from a lateral side of the ring part so that pressure contact surfaces of these lateral pieces are brought to a surface part of the ring part. A horizontal piece mechanism that presses and grips this ring part by pressing it through the leather material, an upper piece mechanism that advances the upper piece and presses the leather material from above to press the leather material to the ring part, and a lower piece piece And a lower piece mechanism for pressing the leather material from below to press the leather material to the ring portion, and a terminal finishing mechanism for adhering the end portion of the leather material to the ring portion by roller finishing. Handle manufacturing equipment.