JPH052353B2 - - Google Patents

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] With the above-mentioned conventional leather-wrapped handle, the work of wrapping the leather piece around the handle was done manually, which resulted in poor work efficiency and required skill to achieve a good wrapping finish. However, the drawback was that the production cost was relatively 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]

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 of which is covered with leather or other covering material from its outer diameter to both sides. a drive mechanism that is connected to the hand support base and rotates the support base; and a drive mechanism that tightens the covering material around the entire outer diameter of the handle while the handle is supported by the support base. a wiper that moves to a position where the upper edge of the sheathing material is rolled into the inner diameter portion of the handle, and then moved to a position where the upper edge portion of the sheathing material is pressed against the inner diameter portion of the handle; It is characterized by:

〔Example〕

Embodiments of the present invention will be described below based on the drawings. 1 is a steering wheel for an automobile; 2 is a piece of leather covering the steering wheel 1; natural leather or synthetic leather is made from the outer diameter portion 3 of the steering wheel 1 to both side portions 4; 5 and 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 which rotates while horizontally supporting the handle 1. This is an annular stand 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 18. The frame 10 is stretched horizontally, and the shaft 11
A passive gear 12 is provided on the lower half of the outer circumferential surface of the underframe 10, and a passive gear 12 is provided on the upper half of the outer circumferential surface of the underframe 10, respectively. A guide roller 13 is provided which is supported so as to rotate while moving. 14 is the underframe 1
This is a drive mechanism that rotationally drives the base block 15, which fixes the base block 15 to the upper surface of the base plate 8 at the middle part of any one of the intervals between the base blocks 9, and this base block 15 has the following: A motor 16 such as a pulse motor or a stepping motor is fixed so that its rotating shaft 17 faces upward, and a pinion gear 18 meshing with a passive gear 12 is fixed to the rotating shaft 17. Reference numeral 19 denotes a clamp provided on the upper surface of the underframe 10 so as to tighten the leather piece 2 over the entire circumference of the outer diameter portion 3 of the handle 1. One end is connected so as to be openable and closable with a shaft pin 22, and a hook 23 is provided at the other end. 24 is base plate 8
A stand block is fixed at a position facing the stand block 15 on the upper surface, 25 is a support fixed on the stand block 24, 26 is a fin lock cylinder supported by this support 25, and a handle supported by the underframe 10. A wiper holder 27 is fixed to this cylinder 26, and a wiper holder 27 is fixed to this wiper holder 27.
A wiper 29 is freely connected to the wiper 29 via a spring 30, which wraps the upper end edge 28 of the leather piece 2 that protrudes inwardly from the upper part 4 of the handle 1 into the inner diameter part 6 of the handle 1 when the leather piece 2 is lowered. . The wiper 29 is formed to have a circular arc surface that is the same as the inner diameter portion 6 of the handle 1. Reference numerals 31 and 31 denote guides for guiding the up and down movement of the wiper 29. Reference numerals 32 and 32 denote slide shafts that are inserted into the inner end of the handle 1 of the stand block 24 so as to be able to rise and fall freely. Reception plate 33 that receives
is fixed. This receiving plate 33 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 a spring receiving plate fixed between the lower ends of the slide shafts 32, 32, and 35 is a cylinder installed under the middle part of the base block 24 so as to move up and down. A push-down plate 36 for pushing down the plate 34 is connected. A threaded bolt 37 is screwed downward into the tip of the push-down plate 36 and inserted through the spring receiving plate 34. A spring receiving fitting 38 is screwed into the lower end of this threaded bolt 37. 39 is a coil spring suspended between the spring receiving plate 34 and the spring receiving metal fitting 38, which constantly pushes up the receiving plate 33 to the position where it receives the lower surface of the wiper holder 27, and also pushes the spring receiving plate 34 onto the lower surface of the push-down plate 36. It is always biased to press against it. Reference numeral 40 denotes a stopper nut screwed onto the outer periphery of the spring receiving metal fitting 38, and by moving the stopper nut in the vertical direction by appropriate pitches, the distance 41 between the spring receiving plate 34 and the wiper 29 is adjusted. It is adjusted to match the distance of descent while being rolled into the inner diameter portion 6 of the handle 1.

The above configuration is controlled as follows by an automatic sequence control circuit (not shown).

That is, adhesive is applied to either or both of the handle 1 and the leather piece 2, and the leather piece 2 is attached to the handle 1.
Cover from the outer diameter portion 3 to both side portions 4 and 5,
and cover the leather piece 2 so that the center line between both side edge portions coincides with the center line of the outer diameter portion of the handle 1,
After placing the handle 1 horizontally on the underframe 10 of the support stand 7 as shown in FIGS. Tighten to diameter part 3. 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 toward the inner diameter part 6. Spring 30 in place
The upper edge part 28 of the leather piece 2 is stretched and pressed down while tilting against the elasticity of the leather piece 2, thereby adhering the leather piece 2 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 FIG. 6, the push-down plate 36, screw bolt 37, spring receiver metal fitting 38, and stopper nut 40 are lowered, and from the middle, the push-down plate 36 touches the spring receiver plate 3.
4 is pushed down, and the movement is transmitted to the receiving plate 33 via the slide shafts 32, 32, 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 portion 6 of the handle 1, and lower the upper edge 28 of the leather piece 2 onto the handle 1.
Press and adhere to the inner diameter portion 6 of. At this point, the wiper holder 27 is received by the receiving plate 33, and the descent of the cylinder 26 is stopped. Immediately thereafter, cylinder 26 and cylinder 35 are actuated so that they rise. Then, the wiper 29 returns to its original position, and the push-down plate 36 also returns to its original position, so that the slide shafts 32, 32, the receiving plate 33, and the spring receiving plate 34 also return to their original positions by receiving the elasticity of the coil spring 39. At this point, the upward movement of cylinders 26 and 35 is stopped.

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 underframe 10 via the rotating shaft 17, pinion gear 18, passive gear 12, and each guide roller 13.
rotates. Due to this rotation, the partially wrapped portion of the leather piece 2 is removed from the top of the base block 24, and the succeeding portion thereof 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. The entire handle 1 is covered with the leather piece 2 by wrapping one half around the other half of the outer peripheral surface of the handle 1.

The present invention is not limited to the above-mentioned embodiment, but includes, for example, the wiper 29 and the receiving plate 33.
They may be arranged so that the positional relationship is reversed from that shown in FIG. Also cylinder 26
A plurality of cylinders 35 and 35 may be installed in the circumferential direction of the handle 1, and the wiper holder 27, the wiper 29, and the receiving plate 33 may be connected to them, respectively. Also, as shown in Figure 8, the edges of both sides of the leather piece 2 are left unbonded at positions slightly shifted toward both sides from the center line of the inner diameter portion 6 of the handle 1, and the unbonded parts are manually finished. Sometimes I let them do the work. 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, as shown in FIG.
42 may be provided. Also, on handle 1,
Various covering materials other than the leather piece 2, such as cloth, may be wrapped around it. 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 covering material is adhered to the handle while being pressed from the surface with a wiper without being pinched from both the top and bottom sides, it not only avoids damaging the covering material, but also prevents damage when adhesive is applied to the back side of the covering material. 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 the drawing]

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 sides of the leather piece. FIG. 9 is a diagram showing an example of changing the adhesion of the edge parts, and FIG.
FIG. 10 is a diagram showing an example in which decorative stitches are provided on both sides of a piece of leather. DESCRIPTION OF SYMBOLS 1...Handle, 2...Leather piece, 7...Handle support stand, 9...Base block, 10...Base frame, 1
2... 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, 3
4... Reception plate, 35... Cylinder.

Claims (1)

[Claims] 1. A steering wheel support stand that rotates while horizontally supporting a steering wheel for an automobile whose outer diameter portion and both sides are covered with leather or other covering material; a drive mechanism that rotationally drives the support 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; Move it to the position where it wraps around the inner diameter part of the above handle,
and a wiper that is moved to a position where the upper edge of the covering material is pressed against the inner diameter portion of the steering wheel.