JP2528255B2 - Wheel tire assembly device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for automatically assembling a solid tire made of an elastic material such as rubber into a wheel.

[0002]

2. Description of the Related Art Conventionally, wheels for baby carriages, shopping carts and the like have a solid tire made of an elastic material such as rubber fitted on the outer peripheral rim of the wheel. In the work, after the tire is expanded in diameter by a machine, an operator manually fits the wheel into the expanded tire.

[0003]

In the above prior art, however, there are problems that work is dangerous, skill is required, the noise is large, the fatigue of the worker is high, and the work efficiency is very poor. there were. The present invention has been made in view of the above-mentioned circumstances, and an object thereof is automation of work and safety of work, improvement of efficiency, reduction of noise, improvement of productivity by labor saving and cost. An object is to provide a device for assembling a tire on a wheel that can be lowered.

[0004]

In order to achieve the above object, the present invention takes the following technical means. That is, the present invention provides a rotary table that is intermittently rotatable about a vertical axis, a wheel and a tire assembling jig set position, a tire set position, a tire diameter expansion press-fit position, and a product on the table. .Receiving trays provided at respective positions with jig take-out positions on the same circumference and at equal intervals, a chuck carriage disposed above the table and capable of reciprocating in the wheel loading direction, and the carriage The wheel loading set chuck, the tire assembling jig transport chuck, the product unloading chuck, and the tire, which are vertically movable in correspondence with the respective positions other than the tire diameter expansion press-fitting position and the wheel loading / tire loading product discharging position. It comprises a carry-in set chuck, a tire-expanding press-fitting means which is vertically movable above the tire expanding-pressurizing position, a wheel carrying means, a tire carrying means and an assembled product carrying-out means. , The jig placed on the inside the pan was carried set the wheel, is characterized in that so as to fitted tire from above the jig.

Further, the present invention is characterized in that each of the trays is attached to the rotary table via a cushioning member such as a spring.

[0006]

According to the present invention, first, the chuck carriage is moved so that the product unloading chuck is located immediately above the product / jig unloading position, and the foil is placed on the tray at the wheel and tire assembly jig setting position. Set the jig, set the foil, jig and tire on the tray at the tire setting position, set the assembled product and jig on the tray at the tire diameter expansion press-fitting position,
Leave the tray at the product / jig removal position empty.

[0007] Then, the wheel carry-in set chuck is set in a state where the foil is gripped, the tire carry-in set chuck is set in a state where the tire is gripped, and the assembled product is gripped in the product carry-out chuck. After setting the state and supplying a predetermined number of wheels and tires to a predetermined loading position and each conveying means, the automatic operation of the apparatus is started.
When the operation of the apparatus is started, the rotary table rotates 1/4 and the chuck carriage moves to the assembly product discharge side and is temporarily stopped. At this time, the empty saucer and foil carrying set chuck moves to the foil and jig setting position, and the saucer on which the foil and jig are set and the chuck holding the tire are at the tire setting position, and the foil, jig, and tire are set. The tray with the set is moved to the tire diameter press-fitting position, and the tray with the assembled product and the jig and the jig transfer chuck are moved to the product / jig removal position.

Next, each chuck descends, the foil is loaded into the empty tray, the tire is loaded into the jig of the tray on which the foil and jig are set, and the product is loaded into the assembled product discharging position.
After the jig transport chuck grips the jig, each chuck moves up, and then the chuck carriage moves to the wheel and tire loading position side and temporarily stops. In the meantime, at the tire radial expansion and press-fitting position, the tire radial expansion and press-fitting means expands and lowers the diameter of the tire using the jig as a guide, and the tire is externally fitted and press-fitted to complete the assembly.

Then, the chucks descend, the wheel loading chuck grips the foil, the tire loading chuck grips the tire, the product unloading chuck grips the assembled product, and the assembly jig transport chuck releases the jig. After setting them on the foil, the chucks are simultaneously lifted and temporarily stopped, and the state at the time of starting the operation of the apparatus is reached. Therefore, after the rotary table again rotates 1/4 turn in the same direction and stops, the chuck carriage moves to the product discharge position side, and the above operation is repeated, and at the tire expanding and press-fitting position, the tire press-fitting assembly is put into the wheel. The attachment is done automatically and intermittently. The wheels and tires are sequentially supplied to the wheel and tire loading positions by the respective transporting means, and the products are unloaded at the product discharging position after dimensional check and selection of the products.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show an embodiment of the device of the present invention, and FIGS.
FIG. 14 shows an example of the wheel 1. The wheel 1 comprises a foil 2 made of synthetic resin and a solid tire 3 made of an elastic material such as synthetic rubber. The tire 3 is a rim 4 of the wheel 2.
The boss portion 5 of the wheel 2 is provided with a shaft hole 6, and the boss portion 5 projects from the rim 4 on one axial side.

As shown in FIGS. 1 to 4, the tire assembling apparatus 7 of the present invention is provided with an apparatus base 8 and a rotation rotatably provided in the upper center of the base 8 intermittently about a vertical axis. A table 9 (index table) and four wheels 1 which are vertically movable via a cushioning material 10 made of an elastic body such as a spring on the table 9 and which are mounted at equal intervals on the same circumference. And the like, a pair of left and right chuck support columns 12 erected on the pedestal 8, a pair of upper and lower support guide rails 13 horizontally extending between the columns 12, and supported by the rails 13. A chuck carriage 14 which is guided and movable in the left-right direction, a tire diameter-expanding press-fitting means 15 provided upright on the frame 8, a wheel conveying means 16, and a tire conveying means 1
7 and the assembled product unloading means 18, the foil carry-in set chuck 19, the tire carry-in set chuck 20, the product carry-out chuck 21, the tire assembling jig conveying chuck 22 mounted on the carriage 14 and the saucer 11. It is mainly configured by a set of three tire-assembling jigs 23 having a substantially truncated cone shape.

Above the turntable 9, four work stations S1, S2, S3 and S4 are provided.
The station S1 is a set position of the wheel 2 and the tire assembling jig 23, the second station S2 is a tire set position, the third station S3 is a tire diameter expansion press-fit position, and the fourth station
The station S4 is a product / jig take-out position, and the stations S1 to S4 are provided on the same circumference and at equal intervals so that the centers of the trays 11 coincide with each other.

Therefore, every time the rotary table 9 intermittently rotates by 1/4 rotation and stops, the center of each tray 11 is sequentially arranged from the first station S1 to the second, third, fourth and first stations.
It cyclically moves to a station (S1 → S2 → S3 → S4 → S1). The rotary table 9
Is rotated at a predetermined timing by the intermittent rotation drive means 24.

As shown in FIGS. 5 and 6, each of the trays 11 has a bottomed cylindrical shallow dish shape, a wheel positioning shaft 25 is erected at the center of the upper surface, and a mounting screw hole 26 is provided around the wheel positioning shaft 25. It is mounted on the rotary table 9 via the cushioning member 10 so as to be movable up and down, and the side wall 11A is provided with chuck claw insertion notches 27 at four positions, respectively, as shown in FIGS. The shaft hole 6 of the foil 2 and the jig 23 are fitted to the shaft 25 and positioned.

The chuck support columns 12 are erected on both sides of the rotary table 9 with a space therebetween, and both columns 12 are supported.
A support guide rail 13 that is bridged over the upper part of the space is located above the center of the rotary table 9 and is fitted to a cylindrical sliding guide 28 that is fitted onto the rail 13 and slides. A plate body 14A that is substantially L-shaped in plan view so as to sandwich it from above and below,
The chuck carriage 14 is configured by fixing 14B.

The chuck carriage 14 includes a support column 1 on the right side.
2 is driven in the left-right direction by a reciprocating drive cylinder 29 horizontally mounted, and its stroke is set to the same distance as the interval between the stations S1 to S4 so that it does not interfere with the tire diameter expansion and press-fitting means 15. On the carriage 14, the product carry-out chuck 21, the tire assembling jig carrying chuck 22, and the foil carry-in set chuck 19 are arranged on the long side from the left on a straight line connecting the stations S4 and S1 at station intervals ( It is mounted so that it can move up and down at the same interval as that of the tray 11.

On the short side of the chuck carriage 14,
Side by side with the foil carrying set chuck 19 and the saucer 11
The tire carry-in set chuck 20 is vertically movably mounted at the same interval as. And each chuck 19-2
The unit 2 is moved up and down by drive cylinders 30, 31, 32, and 33, and is opened and closed by a horizontal expansion / contraction unit (not shown).

The chuck carriage 14 is moved to the left end, and the product unloading chuck 21 is assembled to the product unloading means 18.
1st station S when stopped at product discharge position D
The wheel carry-in set chuck 19 is located on the first station, the tire carry-in set chuck 20 is located on the second station S2, and the jig carrying chuck 22 is located on the fourth station S4.

The tire diameter expanding and press-fitting means 15 is provided with the third
The center is located directly above the station S3, and is vertically movably mounted by a drive cylinder 36 on a support base 35 provided on the rotary table 9 through three columns 34, and the press-fitting claw 15A is fixed. The tire 3 is expanded by the taper surface of the tool 23, and the tire 3 is press-fitted (two-stage press-fitting) in the expanded state by the press-fitting claws 15A, so that the tire 3 is contracted and restored by an internal elastic member or the like.

The wheel conveying means 16 and the tire conveying means 17 are belt conveyors, and are arranged on the gantry 8 in parallel with the guide rails 13 and on the front and rear sides of the carriage 14, respectively. A wheel loading station SW and a tire loading station ST are provided on the inner side of the ends of the conveying means 16 and 17 facing each other and immediately below the rightward movement limit of the chucks 19 and 20, and are spaced apart from the first and second stations S1 and S2. Are provided at the same intervals as the stations S1 to S4, and the wheel loading table 37 and the tire loading table 38 are provided flush with the upper end surface of the conveyor.

Pushers 39 and 40 for shifting the wheels 2 and the tires 3 on the conveyor onto the respective carrying-in bases 37 and 38 are provided at the end portions of the respective conveying means 16 and 17.
It is provided so as to be reciprocally movable by drive cylinders 41 and 42 in a direction orthogonal to the wheel / tire conveying direction, and a wheel supply conveyor 43 and a tire supply conveyor 44 are connected to the starting ends of the respective conveying means 16 and 17. ing.

The tire conveying means 17 is provided at a position higher than the wheel conveying means 16 by substantially the same height as the jig 23, and the tire 3 is set on the jig 23 on the tray 11. Therefore, the lifting stroke of the tire loading set chuck 20 is the same between the second station S2 and the tire loading station ST. Further, both supply conveyors 43 and 44 are connected to a wheel supply hopper 45 and a tire supply hopper 46, respectively (see FIGS. 2 and 3).

The product unloading means 18 has a product discharge position D.
Movable chute 47 provided on the
And the product selection and discharge movable chute 49 and the product shifter 5
0 and its drive cylinder 51, and product discharge fixing chutes 52, 53, 54, and is classified into three types: a defective product whose height is not a reference dimension, and a non-defective product having a large wheel diameter and a small wheel diameter. Then, the storage boxes 55, 56, 57
It is supposed to be thrown into.

The means for measuring the height of the product 1 is built in the product discharge chuck 21, and the outer diameter measuring means 58 is provided in front of the support column 12 on the left side. In addition, the product shifter 50 has an E shape in plan view,
Three pushers 50A, 50B, 50C are formed at the tip. Then, the fixed chutes 53, 54
Are provided in upper and lower two stages so as to continue to the upper and lower positions of the movable chute 49.

The supply conveyors 43 and 44 penetrate through the upper portions of the wheel supply hopper 45 and the tire supply hopper 46, and push-up members 59 and 60 can be moved up and down below the hoppers 45 and 46, respectively. Each hopper 45,
Wheels 2 and tires 3 in the respective conveyors 43, 4
It is designed to be reprinted on page 4. The foil 2 is placed on the conveyor 43 so that the protruding side of the boss 5 faces upward. Further, storage hoppers 61 and 62 are provided directly above the hoppers 45 and 46, and the supply hoppers 45 and 4 are provided.
When the number of wheels 2 or tires 3 in 6 falls below a predetermined number, the frame-shaped gates 63 and 64 of the storage hoppers 61 and 62 are opened,
The wheel 2 or the tire 3 is put into the supply hoppers 45 and 46.

In the above embodiment, when the device 7 is automatically operated, first, the product discharge chuck 21 is moved to the fourth stage S.
4, the chuck carriage 14 is moved to the right so that the wheel 2 is set on the saucer 11 of the first stage S1 as shown in FIGS. As shown in FIGS. 7B and 7C, the tire assembling jig 23 is placed and set on the foil 2 of 11. Also,
As shown in FIG. 7 (d), the tire 3 is mounted on the foil 2 and the jig 23 on the pan 11 of the second stage S2 so as to be fitted onto the wheel 11, and the wheel or assembly is mounted on the pan 11 of the third stage S3. The attached product 1 and the jig 23 are set, and the pan 11 of the fourth stage S4 is emptied.

The wheel loading set chuck 19 is set to hold the foil 3, the tire loading set chuck 20 is set to grip the tire, and the product loading chuck 21 is set to the assembled product. 1 is set in a gripping state, and a predetermined number of wheels 2 are accumulated on the wheel carrying table 37 and the following wheel carrying means 16 and the tire carrying table 38 and the following tire carrying means 17 are accumulated. After accumulating a predetermined number of tires 3, the device 7
To start automatic operation.

When the operation of the device 7 is started, the rotary table 9 rotates 1/4 in the direction shown by the arrow (a) in FIG. 1, and the chuck carriage 14 moves in the direction shown by the arrow (b) in FIG. To pause. At this time, the empty saucer 11 and the foil loading set chuck 19 move to the first stage S1, and the saucer 11 with the foil 2 and the jig 23 set and the chuck 20 holding the tire 3 move to the second stage S2. The saucer 11 (see FIG. 7D) on which the wheel 2, the jig 23 and the tire 3 have been set is moved to the third stage S.
3, the pan 11 on which the assembled product 1 and the jig 23 are placed
Also, the jig transfer chuck 22 moves to the fourth stage S4, and the chuck 21 holding the assembled product 1 moves to the product discharge position D.
It is located on the movable chute 47.

At the third stage S3, the tire diameter expanding and press-fitting operation is started, the chucks 19, 20, 21, 22 are lowered and opened respectively, and the wheel 2 is set on the empty tray 11 of the first stage S1 ( 7B), the tire 3 is set on the jig 23 on the tray 11 of the second stage S2 (see FIG. 7D), and the chuck 2 is set on the fourth stage S4.
1 chucks the jig 23, and at the product discharge position D, the product 1 is dropped onto the movable chute 47.

Then, the chucks 19 to 22 are raised,
At the fourth stage S4, the jig 23 is taken out as shown in FIG. 7 (g), and the chuck carriage 14 is moved to the arrow (c) in FIG.
After moving in the direction indicated by, each chuck 19 to 22 is lowered and opened. At this time, the jig 23 chucked by the chuck 22 is set on the wheel 2 of the first stage S1 (see FIG. 7C), and the other chucks 19 and 2 are set.
When the wheels 0, 21 are closed and the wheel 2, the tire 3 and the product 1 are respectively grasped, the chucks 19 to 22 are raised and the product 1 of the tray 11 is extracted at the fourth stage S4 (see FIG. 7 (h )), The state just before the start of operation.

Meanwhile, in the third stage S3, as shown in FIG.
As shown in (e), the tire 3 has a tire diameter expanding and press-fitting means 1
5 is pressed down by the press-fitting claw 15A of No. 5, and the diameter is expanded by the taper surface of the jig 23 so that the rim 4 of the wheel 2 is
7F, the tire diameter-expanding press-fitting means 15 slightly moves up, and then descends again, so that the tire 3 is press-fitted in two stages by the press-fitting claws 15A as shown in FIG. It has been completely fitted to the rim 4 and the tire assembly has been completed.

Then, after the chucks 19 to 22 are still raised, the rotary table 9 is again rotated 1/4 turn in the same direction (arrow (a) direction) and stopped, and then the chuck carriage 14 is moved to the position shown in FIG. In the direction indicated by the arrow (b), the above operation is repeated, and the tire 3 is automatically expanded and press-fitted at the tire expansion and press-fitting position, that is, at the third stage S3.

When the foil 2 is no longer present at the wheel carry-in station SW, the pusher 39 causes the carrying means 16 to move.
When the upper wheel 2 is replenished and the tire 3 is no longer present at the tire loading station ST, the pusher 40 operates to replenish the tire 3 on the conveying means 17. On the other hand, the product 1 shifted to the movable chute 47 at the product discharge position D
If the height is outside the predetermined size range, the movable chute 47 is activated as a defective product and tilts, and the product 1 is discharged to the defective product storage box 55. When the product 1 is determined to be a non-defective product, the product shifter 50 is shifted in the direction indicated by the arrow (d) in FIG. 1, and the outer diameter measuring means 58 measures the outer diameter on the non-defective product moving table 48.

Then, in the product 1 whose outer diameter is measured,
When the outer diameter is equal to or larger than the predetermined size, the movable chute 49 is left in the horizontal state, and the product shifter 50 inserts the product into the storage box 57 through the upper fixed chute 53. The movable chute 49 operates and inclines, and is thrown into the storage box 56 via the lower fixed chute 54.

In the above embodiment of the present invention, each of the above operations is automatically performed by the control means (not shown). The present invention is not limited to the above embodiment, but can be modified in design as appropriate.

[0036]

As described above, the present invention provides a rotary table which is intermittently rotatable about a vertical axis, a wheel and a tire assembly jig setting position, and a tire setting position on the table. , Reciprocating movement is possible in the tray which is installed at each position with the tire expanding and press-fitting position and the product / jig take-out position on the same circumference and at equal intervals, and the wheel that is arranged above the table. Chuck carriage, each position except the tire expanding and press-fitting position, and wheel loading into the carriage
A wheel loading set chuck, a tire assembling jig transport chuck, a product loading chuck and a tire loading set chuck, which are arranged to be movable up and down in correspondence with the tire loading product discharging position, and move up and down above the tire diameter expansion press fitting position. It consists of a tire diameter expanding press-fitting means, a wheel conveying means, a tire conveying means and an assembled product discharging means, which are freely arranged. It is characterized in that the tire is fitted over the tool from above, so safety and efficiency are improved, labor is reduced, noise is reduced, cost is reduced and productivity is improved by automating the tire assembly work. It is possible to improve.

Further, the present invention is characterized in that each of the receiving trays is attached to the rotary table through a cushioning member such as a spring, so that the tire can be smoothly and securely pressed into the wheel. Moreover, it can be performed without damaging the tire, and furthermore, the foil and the jig can be set on the tray in a smooth and reliable manner.

[Brief description of drawings]

FIG. 1 is a partially omitted plan view (plan view taken along the line AA of FIG. 2) showing an embodiment of the present invention.

FIG. 2 is an overall front view of the same embodiment.

FIG. 3 is a plan view taken along the line BB of FIG.

FIG. 4 is a view taken along line CC of FIG. 1;

FIG. 5 is an enlarged plan view showing an example of a tray in the embodiment.

6 is a cross-sectional view taken along the line DD of FIG.

FIG. 7 is an explanatory view of a tire assembling work in the same embodiment.

FIG. 8 is a plan view showing an example of an assembled product (wheel).

9 is a front view of FIG. 8. FIG.

10 is a cross-sectional view taken along the line EE of FIG.

FIG. 11 is a plan view of the foil of FIG.

FIG. 12 is a front view of FIG. 11.

FIG. 13 is a sectional view taken along line FF of FIG.

14 is a cross-sectional view of the tire of FIG.

[Explanation of symbols]

2 wheels 3 tires 9 rotary table 10 cushioning material 11 saucer 14 chuck carriage 15 tire diameter expansion press-fitting means 16 wheel conveying means 17 tire conveying means 18 assembled product unloading means 19 wheel carry-in set chuck 20 tire carry-in set chuck 21 product carry-out chuck 22 Tire Assembling Jig Conveying Chuck 23 Tire Assembling Jig S1 1st Station (Wheel / Jig Set Position) S2 2nd Station (Tire Set Position) S3 3rd Station (Tire Expansion Press-in Position) S4 4th Station (Product / jig take-out position) SW Wheel carry-in station ST Tire carry-in station D Product discharge position

Claims (2)

(57) [Claims] 1. A rotary table which is intermittently rotatable about a vertical axis, and a wheel and a tire assembling jig setting position, a tire setting position, a tire expanding and press-fitting position, and a product on the table. The jig take-out positions are provided on the same circumference at equal intervals and are attached to each position, a chuck carriage arranged above the table and capable of reciprocating in the wheel carry-in direction, and the carriage. Wheel loading set chuck, tire assembly jig transfer chuck, product unloading chuck, and tire loading, which are vertically movable corresponding to each position except the tire diameter expansion press-fitting position and wheel loading / tire loading product discharging position. A set chuck, a tire diameter-expanding and press-fitting means disposed vertically movable above the tire diameter-expanding and press-fitting position, a wheel conveying means, a tire conveying means and an assembled product discharging means, A device for assembling a tire to a wheel, characterized in that the jig is loaded and set in the tray, and the tire is fitted onto the jig from above. 2. The wheel tire assembling apparatus according to claim 1, wherein each of the trays is attached to the rotary table via a cushioning member such as a spring.