JPH07314225A - Rim working device - Google Patents

Abstract

PURPOSE:To enable accurate working without causing dislocation by holding the rim that has been positioned in a charging stage in the state it has been clamped up to the taking-out stage, and also by providing a clamper by which the clamp is released in the taking-out stage. CONSTITUTION:First and second clamping claws 215, 216 are fitted to the side par on the opposite side of pressing plates 115, and in the state they have been fittedly held without interfering with the pressing plates 115, the rim that has been positioned is cramped on the rotating table side without producing dislocation. After completion of delivery, a cylinder 204 is operated to project its rod out for opening the first and second clamping claws 215, 216, and by plunging the rod 205 of the cylinder 204, a positioning unit 210 is returned to the position of the continuous line. Thereafter, as the rotary table performs index- rotation, the rim is subjected to the working such as seat-pressing, boring, and chamfering.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rim processing apparatus capable of accurately processing a rim by preventing displacement of the rim during processing.

[0002]

2. Description of the Related Art During the process of manufacturing a rim which constitutes an automobile wheel, there is a step of opening a valve hole for supplying air to a tire mounted on the rim. FIG. 7A shows the rim 1 before this step is performed, and A is a processing portion where the valve hole is to be processed. Then, as shown in FIG. 7 (b), first, a pushing process is performed to form the bearing surface 1a. Next, the valve hole 1b is opened as shown in FIG. Here, the center axis of the seat surface 1a and the center axis of the valve hole 1b usually allow an error of only about 0.1 mm, and high accuracy is required for forming the seat surface 1a and the valve hole 1b. Next, FIG.
As shown in a partially enlarged view of (c), since the burrs t are often formed when the valve hole 1b is opened, chamfering is performed to remove the burrs t as shown in FIG. 7 (d).

Now, FIG. 8 is a plan view showing a conventional processing apparatus for carrying out the steps shown in FIG. In FIG. 8, N
Reference numeral 1 denotes the transport direction of the rim 1, and the pusher 3, the punching machine 4, and the chamfering operator 5 are sequentially arranged in a line along the transport direction N1. Further, 2 is a positioning stage of the rim 1, and the rim 1 put into the processing apparatus of FIG.
First, the seating surface 1a is formed on the rim 1 after being positioned by the positioning stage 2 and passed to the seat pusher 3 as shown by an arrow N2 and subjected to seat push processing. Next, as shown by an arrow N3, the rim 1 is passed from the pusher 3 to the punching machine 4 by a delivery means (not shown), and the valve hole 1b is formed in the rim 1. Further, as shown by an arrow N4, the rim 1 is passed to the chamfering worker 5 by a delivery means (not shown). As shown, the processed rim 1 is carried out to the next process.

By the way, as shown in FIG. 7A, the rim 1 has a complicated shape having a large number of irregularities on its side surface, and in the previous step, a regular flat plate is bent into a cylindrical shape.
Butt welding is done, so it is not a perfect circle,
There are variations in shape even for rims of the same type. Furthermore, when the product type is different, the unevenness, the radius and the width of the side surface are different. Therefore, the accurate positioning of the rim 1 is
very hard.

[0005]

Here, in the conventional means shown in FIG. 8, during the transfer indicated by the arrows N2 and N3, the positioning stage 2 transfers to the transfer means, and the transfer means transfers to the pusher 3 to push the seat. The rim 1 is repeatedly delivered from the machine 3 to the delivery means, from the delivery means to the punching machine 4, and the rim 1 is likely to be displaced during the delivery, and the rim 1 is likely to be displaced. There is a problem in that the positional accuracy with the valve hole 1b becomes poor and it is difficult to improve the yield of rim processing. Therefore, an object of the present invention is to provide a rim processing device that can accurately form a seat surface and a valve hole.

[0006]

SUMMARY OF THE INVENTION According to the present invention, driven by a drive unit, an index rotation is performed in a horizontal plane, and a loading stage, a push stage, a punching stage, a chamfering stage and a take-out stage are set in the horizontal plane. A rotary table that moves the table, a loading machine that is provided on the loading stage and positions the rim to deliver to the rotary table, a pusher that moves in and out of the push stage to form a seating surface on the rim, and a hole. A hole drilling machine that moves in and out of the opening stage and opens a valve hole in the rim coaxially with the seating surface, and a chamfering machine that moves in and out of the chamfering stage to chamfer the valve hole.
A rim processing device provided with a unloading stage and having a unloading device for receiving a processed rim from a rotary table, wherein the rotary table keeps the rim positioned at the loading stage clamped to the unloading stage. It is provided with a clamper for holding and releasing the clamp at the take-out stage.

[0007]

With the above construction, the rim is positioned by the loading machine and clamped by the clamper provided on the rotary table at the loading stage. Then, as the rotary table rotates index, the pusher forms a seating surface on the rim on the pusher stage, the punching machine opens the valve hole on the rim on the drilling stage, and the chamfering stage The chamfering machine removes burrs and reaches the extraction stage. During this time, the rim is fixed at a predetermined position on the rotary table by the clamper and rotates in an index with the rotary table, so that accurate processing can be performed without causing positional displacement. Then, the rim is unloaded from the clamper at the take-out stage and is received by the take-out machine.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is an overall plan view of a rim processing device according to an embodiment of the present invention. Reference numeral 100 is a rotary table that rotates in the direction of the arrow θ, 200 is a loading stage (the rim 1 is at position P1) provided on the loading stage to position the rim 1 and deliver it to the rotary table 100, and 300 is a push stage (rim 1). Moves back and forth to position P2) and rims 1
It is a pusher that forms a seating surface 1a on the. Of these, 30
1 is a first base, and 302 is a pusher body mounted on the first base 301 slidably in the direction of arrow M1, 30
3 is a motor fixed to the rear of the first base 301, 30
Reference numeral 4 is a feed nut connected to the rear portion of the pusher body 302, and 305 is a feed screw which is screwed into the feed nut 304 and driven by a motor 303. Therefore, when the motor 303 is operated, the pusher body 302 can be moved back and forth in the direction of the arrow M1. Reference numeral 306 is an auxiliary clamper that is pivotally supported by the pivotal support portion 307, opens and closes in the direction of the arrow α, and laterally clamps the side portion of the rim 1 on the seat pushing stage. Since a large load acts on the rim 1 at the time of push-work processing, the rim 1 is pressed by the auxiliary clamper 306 in addition to the clamper of the rotary table 100 described later. Further, the auxiliary clamper 306 can be opened and closed in the direction of the arrow α, so that it is possible to cope with the case where the radius of the rim 1 is changed due to the change of the type of the rim 1.

Reference numeral 400 denotes a hole punching machine (a position P3 for the rim 1) that moves back and forth to open a valve hole 1b in the rim 1 coaxially with the seat surface 1a. This is a chamfering machine that moves in and out of P4) to chamfer the valve hole 1b. These punching machine 400, chamfering machine 5
00 is also the second base 40 as in the pusher 300 described above.
1, third base 501, punching machine main body 402, chamfering machine main body 502, motors 403, 503, feed nut 404,
504, feed screws 405, 505
By operating 3, 503, the punching machine body 40
2. The chamfering machine main body 502 can be moved in and out in the directions of arrows M2 and M3, respectively. The pusher body 30
2. The configurations of the punching machine main body 402 and the chamfering machine main body 502 themselves are publicly known, and therefore their explanations are omitted. A take-out machine 600 is provided on the take-out stage (the rim 1 is at the position P5) and receives the processed rim 1 from the rotary table 100.

Next, the rotary table 100 will be described. 2 is a plan view of the rotary table 100, and FIG. 3 is a front view thereof. Of these, 101 is a support frame and 10
Reference numeral 2 denotes a shaft supporting portion provided on the support frame 101, 103 denotes a shaft vertically supported by the shaft supporting portion 102, and 104.
Is a motor for index-rotating the shaft 103 via the speed reducer 105. The motor 104 and the speed reducer 105 constitute a drive unit of the rotary table 100. Reference numeral 106 denotes a rotary plate pivotally mounted on the upper part of the shaft 103, and reference numerals 107 to 111 denote inverted L-shaped arms, which are arranged radially at an angle of 72 degrees and the base ends of these arms 107 to 111. The part is fixed to the rotary plate 106 so as to surround the shaft 103. 112 is the arm 1
This is a cylinder fixed downward at the tip of 07 to 111, the lower end of the rod 113 of the cylinder 112 is connected to a wide L-shaped bracket 114, and 115 is fixed to both ends of the lower surface of the bracket 114. Along with this, it is a holding plate that is formed long in the radial direction of the rim 1 (see the hatched portion in FIG. 2). Further, 116 is a receiving plate fixed to the upper surface of the rotary plate 106 so as to substantially face the pressing plate 115. Further, 117 is a guide fixed vertically to the rising portions of the arms 107 to 111, and 118 is a bracket 114.
Is a slider that is fixed to the rising portion of the and is slidably engaged with the guide 117. Therefore, cylinder 1
When 12 is operated, as shown by an arrow M4 in FIG. 3, the bracket 114 and the pressing plate 115 are moved up and down, and the end edge of the rim 1 is vertically clamped between the pressing plate 115 and the receiving plate 116. , You can cancel the clump. Further, since the holding plate 116 is formed to be long as described above, the rim 1 can be firmly clamped even when the radius of the rim 1 is changed (see also FIG. 4), and the type of the rim 1 can be changed.

Next, the inserter 200 will be described. Figure 4
Is a plan view of the loading machine 200, and FIG. 5 is an enlarged side view of the positioning unit. Reference numerals 201 and 202 denote a pair of guide rails extending toward the loading position of the rotary table 100 and arranged in parallel, and 203 denotes the guide rail 20.
These rollers are provided on both sides of 1, 202 and on which the end edges of the rim 1 are placed and which roll to guide the rim 1. Two
04 is a positioning unit 2 whose rod 205 will be described later.
10 is a cylinder that is connected to 10 and moves the positioning unit 210 between the solid line position and the chain line position (position P1) in FIG.

As will be described with reference to FIG. 5 as well, in the positioning unit 210, 211 is a support plate guided by the guide rails 201 and 202 by a slider 212 provided on the lower surface. 213 and 214 are support plates 211
The shafts 213, 2 have the same diameter and are axially supported at right angles to the guide rails 201, 202 with a predetermined space therebetween.
Reference numeral 14 is a first pinching claw 21 for pinching the side portion of the rim 1 from the outside.
5 and a second sandwiching claw 216 sandwiched from the inside. Further, the shafts 213 and 214 have a first pinion 217 and a second pinion 2 which are formed of the same gear.
18 is pivotally mounted, and these first and second pinions 217, 2
18 is screwed to the rack rod 219, and 220 is a cylinder whose rod 221 is connected to the lower part of the rack rod 219 to move the rack rod 219 up and down.
Are fixed to the support plate 211. Therefore, when the cylinder 220 is operated and the rod 221 is projected, the first and second clamping claws 215 and 216 can be opened as shown by the chain line, and when the rod 221 is retracted, it is shown by the solid line. Thus, the first and second clamping claws 215 and 216 can be closed to clamp the side portions of the rim 1 from inside and outside. The cylinder 220, the rack rod 219, and the first and second pinions 217 and 218 form a sandwiching pawl drive unit. Here, since the first and second pinions 217 and 218 are made of the same gear and are screwed into the same rack rod 219, the first and second pinching claws 215 and 216 are always in the center of the rack rod 219. Positioning the rim 1 on the central axis of the rack rod 219 (the axis of symmetry of the first and second clamping claws 215, 216) regardless of the shape of the rim 1 by performing a completely symmetrical operation with respect to the axis. You can

Therefore, it is mounted on the roller 203,
As shown by the solid line in FIG. 4, the rotary table 10 of the rim 1 is placed between the first and second sandwiching claws 215 and 216 in the open state.
When the side opposite to 0 reaches, as shown by the solid line in FIG.
The first and second sandwiching claws 215 and 216 are closed to position the side portion of the rim 1 on the central axis of the rack rod 219. Next, the cylinder 204 is operated to feed the positioning unit 210 and the rim 1 to the position indicated by the chain line in FIG. 4, and the cylinder 112 of the rotary table 100 is operated, so that the pressing plate 115 and the receiving plate 116 are provided on the rim 1 side of the rotary table 100. Clamp the edges. At this time, the first and second pinching claws 21
Reference numerals 5 and 216 sandwich the side portion on the opposite side of the holding plate 115, and are in a state where the holding is held without interfering with the holding plate 115 or the like, and the positioned rim 1 is not displaced. It can be clamped on the rotary table 100 side. Then, when the delivery is completed, the cylinder 220 is operated to cause the rod 221 to project and the first and second
By opening the clamping claws 215 and 216 and retracting the rod 205 of the cylinder 204, the positioning unit 210 is returned to the position indicated by the solid line in FIG. After that, as the rotary table 100 is index-rotated, the rim 1 is subjected to processing such as pushing, punching and chamfering.

Next, the take-out machine 600 will be described with reference to the side view of FIG. First, 601 is a horizontal roller that underlies the rim 1 that has reached the take-out stage (the rim 1 is at position P5), 602 is a discharge roller provided so as to be inclined downward along the discharge direction M5, and 603 is A horizontal plate supported by the foot portion 602a, and 605 is a horizontal plate 60.
3 is a vertical plate guided by a guide rod 604 provided along the discharging direction M5. Reference numeral 606 denotes a rod 607 whose tip portion is connected to the vertical plate 605, and the vertical plate 605 is connected to the discharging direction M5.
5, a horizontal cylinder 608 is reciprocally moved, and a vertical cylinder 608 is supported downward on the vertical plate 605, and a pushing rod 610 is connected to the tip of the rod 609.

Therefore, first, the vertical cylinder 608 is actuated to raise the pushing rod 610, and the processed rim 1 is processed.
By the index rotation of the rotary table 100 until it is sent to the take-out stage, and if the rim 1 is sent to the same stage and placed on the roller 601,
The vertical cylinder 608 is operated to lower the pushing rod 610 as shown by an arrow M6. Then, the horizontal cylinder 606 is operated and the rod 607 is pulled to move the pushing rod 61.
0 against the inside of the side of the rim 1 and
By pulling in the direction of arrow M7, the rim 1 is moved onto the discharge roller 602 that is inclined downward. Then, as shown by an arrow M8, the vertical cylinder 608 is operated to raise the pushing rod 610, and the rim 1 is discharged by the discharge roller 602. Next, the horizontal cylinder 606 is operated to move the pushing rod 610 to the rotary table 100 side,
In preparation for the next discharge of the rim 1.

As described above, in the rim processing apparatus of this embodiment, the pentagonal rotary table is adopted, and the arms 107 to 111 having the holding plate 115 are provided corresponding to each station such as the seat pushing stage. The steps can be performed simultaneously in parallel and continuously, and the efficiency of processing work can be improved.

[0017]

The rim processing apparatus of the present invention is driven by the drive unit to perform index rotation in the horizontal plane, and between the loading stage, the pushing stage, the punching stage, the chamfering stage and the take-out stage set in the horizontal plane. A rotary table that moves the table, a loading machine that is provided on the loading stage and positions the rim to deliver to the rotary table, a pusher that moves in and out of the push stage to form a seating surface on the rim, and a hole. A hole drilling machine that moves in and out of the opening stage and opens a valve hole in the rim coaxially with the seating surface, and a chamfering machine that moves in and out of the chamfering stage to chamfer the valve hole.
A rim processing device provided with a unloading stage and having a unloading device for receiving a processed rim from a rotary table, wherein the rotary table keeps the rim positioned at the loading stage clamped to the unloading stage. Since the clamper that holds the clamp and releases the clamp on the take-out stage is provided, the rim is subjected to processing while being positioned at the predetermined position of the rotary table, and accurate processing can be realized without causing positional displacement. .

[Brief description of drawings]

FIG. 1 is an overall plan view of a rim processing device according to an embodiment of the present invention.

FIG. 2 is a plan view of a rotary table according to an embodiment of the present invention.

FIG. 3 is a front view of a rotary table according to an embodiment of the present invention.

FIG. 4 is a plan view of a loading machine according to an embodiment of the present invention.

FIG. 5 is an enlarged side view of the positioning unit according to the embodiment of the present invention.

FIG. 6 is a side view of a take-out machine according to an embodiment of the present invention.

7A is a sectional view of a conventional rim, FIG. 7B is an explanatory view of a conventional rim processing step, and FIG. 7C is an explanatory view of a conventional rim processing step.

FIG. 8 is a plan view of a conventional rim processing device.

[Explanation of symbols]

 1 rim 1a bearing surface 1b valve hole 100 rotary table 200 throwing machine 300 pusher 400 punching machine 500 chamfering machine 600 take-out machine P1 throwing stage P2 punching stage P3 punching stage P4 chamfering stage P5 picking stage

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nakamura recruited 132 Kamiokuma, Kasuya-cho, Kasuya-gun, Fukuoka (72) Inventor Hiroyuki Kajiwara 2-3-6 Yanagikawachi, Minami-ku, Fukuoka

Claims (3)

[Claims] 1. A loading stage which is driven by a driving unit to perform index rotation in a horizontal plane and is set in the horizontal plane,
A rotary table that moves between a push stage, a punching stage, a chamfer stage, and a take-out stage; a throwing machine that is provided on the throwing stage and positions a rim to pass the rotary table to the rotary table; A pusher that moves back and forth to form a seat surface on the rim, a pusher that moves back and forth on the hole making stage and opens a valve hole at the rim coaxially with the seat surface, and a chamfering stage. A rim processing device having a chamfering machine for chamfering the valve hole, and a take-out machine that is provided on the take-out stage and receives a processed rim from the rotary table, wherein the rotary table is: The rim positioned on the loading stage remains clamped up to the unloading stage and the unloading is performed. Rim machining apparatus characterized in that it comprises a clamper for releasing the clamp at stage. 2. The rim processing apparatus according to claim 1, wherein the clamper has a holding plate for vertically clamping an end edge of the rim, and the holding plate is elongated in a radial direction of the rim. 3. The insertion machine opens and closes symmetrically with respect to the rim to open and close symmetrically with a pair of sandwiching pawls for sandwiching the rim from the inner and outer diameter sides of the rim. A positioning unit having a sandwiching pawl drive section is provided.
The rim processing device described.