JPH04150889A - Automatic leather winder of automobile steering wheel - Google Patents

Abstract

PURPOSE:To extremely increase a working efficiency without skillfulness, by composing an automatic leather winder with a clamp fastening a cover material over the full range of the periphery of the outer diameter of the steering wheel and a wiper transferring to the position pressing the upper edge of the covering material to the inner dia. part of the steering wheel. CONSTITUTION:After a steering wheel 1 is horizontally placed on a base frame 10 of a support base, the clamp rod of a clamp 19 is closed and a leather piece 2 is fastened on the outer dia. part 3 of the steering wheel 1. The upper edge 28 of the leather piece 2 is lowered, while extended and pressed and slanted, against the elastic force of a spring 30 at the position where the wiper 29 is positioned to a little inner dia. side 6 from the upper side 4 of the steering wheel 1, to stick the leather piece 2 from the outer dia. part 3 to the upper side 4 of the steering wheel 1. The direction of the wiper 29 is further vertically changed against the elastic force of the spring 30 and the upper edge 28 of the leather piece 2 is wounded in the inner dia. part 6 of the steering wheel 1 and lowered. And the upper edge 28 of the leather piece 2 is pressed and stuck on the inner dia. part 6 of the steering wheel 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an automatic leather wrapping machine for automobile steering wheels.

[Conventional technology]

Some conventional automobile steering wheels include those in which the steering wheel is covered with leather.

In this type of handle, a piece of leather is cut in advance to a size that can be wrapped around the handle from the outer diameter part to the inner diameter part, and is tightly wrapped around the handle, and the edges of both sides of the leather piece are butted on the center line of the inner diameter part of the handle. Many of the items are sewn together.

[Problem to be solved by the invention]

In the conventional leather wrapping method mentioned above, the work of wrapping the leather pieces around the handle was done manually.
If the work efficiency is poor and you want to improve the finish of wrapping,
The drawback was that it required skill and the production cost was accordingly high.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic leather wrapping machine for automobile steering wheels that can eliminate such drawbacks.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a steering wheel support stand that rotates while horizontally supporting an automobile steering wheel, the steering wheel having an outer diameter portion and both sides covered with leather or other covering material. a drive mechanism that is connected to the handle support base and rotates the support base; and a drive mechanism that is connected to the handle support base to rotate the support base; a tightening clamp; and a wiper moved to a position to wrap the upper edge of the sheathing into the inner diameter of the handle, and then moved to a position to press the upper edge of the sheathing against the inner diameter of the handle. It is characterized by configuring.

〔Example〕

The present invention will be described in detail below with reference to the drawings. 1 is a steering wheel for an automobile; 2 is a piece of leather that covers the steering wheel 1; the leather piece is made of natural leather or synthetic leather from the outer diameter portion 8 to the side portions 4.5 of the steering wheel 1; It is then cut to a size that allows it to be tightly wrapped around the inner diameter portion 6. Reference numeral 7 denotes a handle support stand that rotates while horizontally supporting the handle 1. This is an annular underframe between the upper parts of a plurality of stand blocks 9 arranged and fixed at appropriate intervals in the circumferential direction on the upper surface of the base plate 8. 10 is hung horizontally and supported rotatably around a shaft 11, a passive gear 12 is provided on the lower half of the outer peripheral surface of the base frame 10, and a base is mounted on the upper part of each base block 9. Frame 1
Guide rollers 13 are provided so as to rotate while contacting the upper portions of the outer circumferential surface of the rollers. Reference numeral 14 denotes a drive mechanism for rotationally driving the underframe lO, which fixes the stand block 15 on the upper surface of the base plate 8 at the middle part of any one of the intervals between the respective stand blocks 9, and rotates the stand block 10. A motor 16 such as a pulse motor or a stepping motor is fixed to the motor 15 so that its rotating shaft 17 faces upward.
, a pinion gear 18 that meshes with the passive gear 12 is fixed, and a clamp 19 is provided to tighten the leather piece 2 over the entire circumference of the outer diameter portion 3 of the handle 1 on the upper surface of the underframe 1o. This consists of a pair of semicircular clamp rods 20 and 21, one end of which is openably and closably connected by a shaft pin 22, and a hook 23 is provided at the other end. 24
25 is a table block fixed at a position facing the table block 15 on the upper surface of the base plate 8, and 25 is a table block 2.
A fine lock cylinder 26 is supported by the column 25 fixed on the column 4, and is installed to move up and down on a vertical line above a point close to the inner diameter portion 6 of the handle 1 supported by the underframe 10. This cylinder 2
A wiper holder 27 is fixed to the wiper holder 27, and when the wiper holder 27 is lowered, an upper edge portion 2 of the leather piece 2 that protrudes inward from the upper portion 4 of the handle 1 is attached to the wiper holder 27.
A wiper 29 that wraps around the inner diameter portion 6 of the handle 1 is freely connected to the wiper 29 via a spring 3o.

This wiper 29 is shaped to have an arcuate surface that follows the arc of the inner diameter portion 6 of the handle l. 31.3
1 is a guide for guiding the vertical movement of the wiper 29; 32.
Reference numeral 32 denotes a slide shaft inserted into the inner end of the handle 1 of the base block 24 so as to be able to rise and fall freely, and a receiving plate 33 for receiving and holding the wiper holder 27 is fixed between the upper ends thereof. This receiving plate 38 is formed to have a circular arc surface that follows the circular arc of the inner diameter portion 6 of the handle 1. 34 is the slide shaft 32.32
The spring receiver fixed between the lower ends of the plate 35 is a cylinder installed under the middle part of the base block 24 to move up and down. A threaded bolt 37 is screwed downward into the tip of the push-down plate 36, and the spring receiver is a threaded bolt inserted through the plate 34. At the lower end of this threaded bolt S7, a spring receiver is attached to a metal fitting 38.
is screwed in. 39 is a coil spring suspended between the spring holder plate 34 and the spring holder metal fitting 38, which constantly pushes up the holder plate 33 to the position where it catches the lower surface of the wiper holder 27, and the spring holder is suspended between the plate 34 and the spring holder metal fitting 38.
4 is always pressed against the lower surface of the push-down plate 36. Reference numeral 40 denotes a stopper nut screwed onto the outer periphery of the metal fitting 38, and the spring receiver is moved vertically by a certain distance so that the distance 41 between the spring receiver and the plate 34 is maintained, and the wiper 29 is attached to the upper edge of the leather piece 2. It is adjusted to match the distance that the portion 28 is lowered while being rolled into the inner diameter portion 6 of the handle 1.

The above configuration is controlled by an automatic sequence control circuit (r!A omitted) as follows.

That is, adhesive is applied to either or both of the handle 1 and the leather piece 2, the leather piece 2 is placed over the handle 1 from the outer diameter portion 3 to both side portions 4.5, and both side edge portions of the leather piece 2 are covered. After placing the handle 1 horizontally on the underframe 10 of the support base 7 as shown in FIGS. 1 and 8, ,
The clamp rods 20, 21 of the clamp 19 are closed and the leather piece 2 is tightened onto the outer diameter portion S of the handle 1. In this state, cylinder 26 is actuated so that it descends. Then, as shown in Figure 5, the wiper holder 27 descends and pushes down the receiving plate 33 against the elasticity of the coil spring 39, and at the same time the wiper 29 moves slightly from the upper part 4 of the handle 1 to the inner diameter part 6 side. The upper edge part 28 of the leather piece 2 is stretched and pressed down while tilting against the elasticity of the spring 30, and the leather piece 2 is bonded from the outer diameter part 3 to the upper part 4 of the handle 1. At this point, the cylinder 26 is locked and the downward movement of the cylinder 26 is stopped. Immediately thereafter, cylinder 35 is actuated so that it descends. Then, as shown in the sixth figure, the push-down plate 36 and screw bolt 37
, the spring holder is the metal fitting 38, the stopper nut 40 is lowered,
From the middle, the push-down plate 36 is moved to the spring holder plate 34.
The movement moves the slide shaft 32.
32 to the receiving plate 33, so that the receiving plate 33 descends. At this point, the cylinder 35 is stopped from descending, and immediately thereafter the cylinder 26 is activated so that it descends. Then, as shown in FIG.
8 into the inner diameter part 6 of the handle 1, and lower the upper edge 28 of the leather piece 2 into the inner diameter part 6 of the handle 1.
Adhere by pressure. At this point, the wiper holder 27 is stopped by the receiving plate 33, and the descending of the cylinder 26 is stopped. Immediately after that, cylinder 26 and cylinder 85
Operate them so that they rise. Then, as the wiper 29 returns to its original position, the push-down plate 36 also returns to its original position, so that the slide shaft 32, 32, the receiving plate 33, and the spring holder plate 84 are also aligned with the coil spring 8.
It returns to its original position due to the elastic force of 9. At this point cylinder 2
6 and the cylinder 35 stop rising.

By the above operations, the wrapping of the leather piece 2 around the portion of the handle 1 corresponding to the base block 24 from the outer diameter portion 3 to the inner diameter portion 6 via the upper portion 4 is completed.

Immediately after that, the motor 16 is energized, the motor 16 rotates, and the rotation is transmitted to the rotating shaft 17 and pinion gear 18.
, the underframe 1 via the passive gear 12 and each kite roller 18
0, so the underframe rotates 1°. Due to this rotation, the part of the leather piece 2 that has been partially wrapped comes off the top of the base block 24, and the subsequent part reaches the top of the base block 24. At this point, the power supply to the motor 16 is cut off, the rotation of the underframe 10 is stopped, and then the series of operations described above is performed. By repeating such operations, the upper half of the leather piece 2 from the center line is wrapped around half of the outer peripheral surface of the handle 1.

Next, after opening the clamp rods 20 and 21 and inverting the handle 1 on the underframe 10, the clamp rods 20 and 21 are closed again and the above operation is repeated, thereby lowering the center line of the leather piece 2. Wrap one half of the handle 1 around the other half of the outer circumferential surface of the handle 1, and wrap the entire handle 1 with the leather piece 2.
Cover with

The present invention is not limited to the above embodiment, and for example, the wiper 29 and the receiving plate 33 may be arranged in a positional relationship that is reversed from that shown in FIG. In addition, the cylinder 26 and the cylinder 36 are connected by a handle l.
multiple wiper holders are installed in the circumferential direction of the wiper holder 2.
7. The wiper 29 and the receiving plate 88 may be connected to each other. In addition, as shown in Figure 8, the edges of both sides of the leather piece 2 are left unbonded at positions slightly shifted from the center line of the inner diameter portion 6 of the handle 1 to both sides, and the unbonded parts are manually finished. Sometimes I leave it to them. Further, both side edge portions of the leather piece 2 may be bonded together so as to be overlapped as shown in FIG. 9. In addition, decorative stitches 42 are provided on both side edges of the leather piece 2 as shown in Figure 10.
．． 42 may be provided. Further, the handle 1 may be wrapped with various covering materials other than the leather piece 2, such as cloth. In addition to being operated by an air cylinder or a hydraulic cylinder, the wiper and the catch plate may also be operated by a motor or other drive device.

〔Effect of the invention〕

Since the present invention is constructed as described above, it is possible to significantly improve the efficiency of wrapping leather or other covering material around an automobile steering wheel without requiring any skill, and furthermore, it is possible to significantly improve the efficiency of wrapping leather or other covering material around an automobile steering wheel. Since the coating is adhered to the handle while being pressed from the surface with a wiper without being pinched from both the top and bottom sides, not only does it not have to damage the coating, but it can also be used when adhesive is applied to the back of the coating. This has the advantage that the adhesive force of the adhesive is not inhibited, the covering material can be wrapped with good finish, and the manufacturing cost can be reduced.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view showing the state immediately before the start of the operation of wrapping a piece of leather, Fig. 2 is a right side view of Fig. 1, and Fig. 3 is a view showing the state in which the handle is supported. Figure 4 is a partial side view of the same state; Figure 5 is a diagram showing the upper edge of the leather piece being rolled into the inner diameter of the handle; Figure 6 shows the passive plate lowered, Figure 7 shows the upper edge of the leather piece pressed against the inner diameter of the handle by the wiper, and Figure 8 shows both side edges of the leather piece. Figure 9 is a diagram showing an example in which the edges of both sides of a piece of leather are overlapped and glued together; Figure 10 is an example in which decorative stitches are provided on both sides of a piece of leather. FIG. l...Handle, 2...Leather piece, 7...Handle support base 9...Base block, 10...Underframe, 12...
・Passive gear, 13... Guide roller 14... Drive mechanism, 15... Base block, 16... Motor
18... Pinion gear, 19... Clamp, 26...
...Cylinder, 27...Wiper holder 29...
・Wiper 30... Spring, 34... Reception plate, 85... Cylinder. Figure Figure Figure 5/ Figure

Claims (1)

[Claims] A steering wheel support stand that rotates while horizontally supporting an automobile steering wheel whose outer diameter portion and both sides are covered with leather or other covering material; and a steering wheel support stand that is connected to the handle support stand and supports the same. a drive mechanism that rotationally drives the base; a clamp that tightens the sheathing material all around the outer diameter of the handle when the handle is supported by the support base; and an upper end edge of the sheathing material; The automatic leather roller of the automotive handle consisting of a wiper that moves to the inner diameter part of the handle, and then presses the upper edge of the cover to the inner diameter of the above handle.