JPH02241731A - Manufacture of wheel - Google Patents

Abstract

PURPOSE:To enable a rim and tire pieces to be adhered firmly by molding tire pieces having each cavity part accommodating the hollow part and rim of a tire, after that, connecting the tire pieces in putting a rim covered with a rubber into the cavity part, and charging air with a pressure higher than that of atmospheric pressure into the hollow part, and then molding the tire pieces to the rim integrally. CONSTITUTION:Tire pieces 130, 130 are molded by the use of molds 11, 12 for molding the outer surface of a tire and a mold 20 for molding an inner surface having a cavity part 123 accommodating the hollow part 108 and rim 107 of the tire. After that, the tire pieces 130, 130 are connected to each other in putting the rim covered with a rubber C on the faced outer periphery to a hollow part 108 into the cavity part 123. And, air with a pressure higher than that of atmospheric pressure is charged into the hollow part 108, and further, the tire pieces 130, 130 are molded integrally around the rim 107, thereby manufacturing a wheel. Besides, the radius L1 of the cavity part 123 in the tire pieces 130, 130 accommodating the rim 107 is formed to be smaller than the radius L2 of the rim 107.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for manufacturing a wheel having a hollow portion 108 inside the tire. A method of manufacturing a wheel in which a tire is molded around a rim as shown in Publication No. 8/1983-26040 is disclosed, but in this prior art, the technique of joining tire pieces to the rim has not been sufficiently considered. Isn't it a piece of tire with high pressure gas in the hollow part? When molding and vulcanizing in one piece,
The high-pressure gas entered the space between the rim and the tire and separated them, causing the problem that when the wheel was used, the rim and tire would shift and separate, resulting in damage. was there.

(Method of Solving the Problems) In order to solve the problems of the conventional example, the present invention provides molds 11 and 12 for molding the outer surface of the tire and a hollow part 1 of the tire.
08 and a mold 20 that molds the inner surface having a cavity 123 into which the rim 3.07 is inserted, after molding the tire pieces 130, 130, a rim with rubber D stretched around the outer periphery facing the hollow part 108 in the cavity 123. Join the tire pieces 30 and 130 so that the tire pieces 10'1 and 10'1 are inserted, and inject gas at a pressure higher than atmospheric pressure into the hollow part 108, and inject the tire into the rim 107.
14 characterized by integrally molding 4-30 and 130
This is a manufacturing method for 11IQ.

(Operations and Effects of the Invention) This invention provides a mold J for molding the outer surface of the ear.
2 and a hollow part 123 into which the tire hollow part, LO8, and rim 10゛l are inserted, and a mold 20 for molding the inner surface thereof. Rim 10 covered with rubber
Join the tire pieces 130-130 so that 7 is inserted,
Filling the hollow part 108 with gas at a pressure higher than the large pressure,
Since the axle manufacturing method is characterized by integrally molding the tire pieces 130 and 130 on the rim i07, the rim 10
The rubber D is now located between the rim 107 and the tire piece 130. Appropriately prevents high pressure gas from entering, rim J-07
and tire pieces] 30 and 130 can be bonded very strongly.

(Example) A method for manufacturing a wheel, which is an example of the present invention, will be described in detail based on the following.

First, a hydraulic press molding device for press molding wheels]6
I will explain about it. Reference numeral 2 denotes a machine frame constructed by fixing cylindrical frames 5 to the four corners of a pedestal 3 stepped on the floor and an upper frame 4. Reference numeral 6 denotes a -1-to moving frame body having through holes 7 at the four corners;
... is installed in a state-p in which the through hole 7 ... is penetrated. Reference numeral 8 denotes a hydraulic device for moving the vertically movable frame 6 -1-downward along the cylindrical frame 5, and one part of the hydraulic piston 9 is installed on the lower surface of the J-downward movable frame 6. has been done. 10.10 is fixed to the 1- and surface of the upper F moving frame 6.
, the left and right rails 71 on which the lower die 11 for wheel molding is placed so as to be movable in the E-port direction.
Reference numeral 2 denotes an upper mold for forming a wheel, which is fixed to the lower surface of the upper frame 4 with bolts.

1:31・13b has a temperature of 140 to 200℃ and a pressure of 1
2) A flexible pipe is used to supply water vapor of uc/- to the inside of the lower mold 11 and the upper mold 12, and the lower mold 11 and the upper mold J,
2 is the humidity 1 whose temperature vulcanizes raw rubber with RJ1
The temperature is maintained at 40-200°C.

Reference numeral 14 denotes a storage tank installed on the floor below the left and right rails 10 and 10, and is equipped with an electric heater 5 that is activated by detection of a temperature sensor and a cooling device J6. The temperature is always maintained at 70''C: ~] and 10℃. Reference numerals 17 and 17 are left and right rails provided between the inside and outside of the temperature-controlled warehouse 14, and the gripping portion 18 is attached to the upper part of the rail.
A movable table 19 having a movable table 19 is mounted so as to be movable along the rail. Then, with the core mold 20 placed on the top surface of the movable table 19, the operator moves the movable table 19 along the left and right rails 17 by holding the grip part 'j48.
Enter the temperature-controlled warehouse 14 [121 into the temperature-controlled warehouse 14 with the moving table 19
Along with this, a core mold 20 can be stored. 22
is a lid body (door) that opens and closes the entrance of the temperature control chamber 11114 by inserting and removing it in the vertical direction;
The core mold 2o is stored inside the core mold 2o, and the acclimatization heater 15
and the cooling device 1G to adjust the temperature of the core mold 2 to a temperature of 70°C to 110°C at which raw rubber can be molded and not vulcanized in a short period of time.

23 is a nozzle attached to the tip of a bendable pipe 24, and is configured so that steam at a temperature of 140 to 200° C. and a pressure of 12 kg/ad can be ejected from the tip.
ing. A valve 24' is provided at the base of the pipe 24, and can be used to control the state in which h1 water vapor is ejected from the tip of the nozzle 2; It is configured so that it can be switched.

Here, the lower mold 11 will be explained in detail.

The mold part 1]-B is connected with the base part 11a and the mold part 1]-b by the bolt li.
It is configured to be fixed at Q...

Reference numeral 25 denotes a mold carved into the surface 1 of the mold part 1 lb, which includes a part 26 for molding the ear body part 1-Ol, a part 27 for molding the lug 102, etc. The outer shape of the rubber tire, such as a portion 28 for forming the spoke covering portions 1, 03, etc., is carved, and the surface thereof is formed into a rough surface.

Reference numeral 29 denotes a support bottle that passes through a hole 105 of a boss 104 of an axle 100, which will be described later, and is fixed in the central portion of the base portion 11a. 30 is a heavy wheel described later] 00's Sport Ri1-
It is a spoke support part that supports 06, and is a spoke support part that supports mold part 1] b l
-But: There are three locations. However, support bin 29
and three spoke support parts 30..., the wheel 100
The rim 107 is configured so that it can be positioned at a predetermined position i on the mold part 25. Furthermore, in the center of the spoke support part 30, there is provided a movable support J□B which is movable in the first direction and is biased in the -1-#i force direction by a spring 30b. There is.

31... is the mold part 11. This is a through-hole as a suction part bored in the bottom of the portion 27 forming the lug 102 of b.

Reference numeral 32 denotes a through hole bored across the 1- face and the side 1hi of the base portion 11a, and a pipe 33 is provided in the side portion thereof.
is provided. 34.34 is a seal, -1
- Arrangement through hole 3]... and; The hole [] of the plate 2 is carved into the surface of the base portion 11a and installed in a perfect manner. However, the pipe 33 is connected to the vacuum valve ζ, and the seal 3
4 and 34, put the raw rubber on the mold 25 and press it. When pressing, apply negative pressure to the through holes 31 and press the bottom corner of the part 27 where the lug 102 is to be formed + τ. '
I! It's starting to look like it.

35 is a hole provided on the outer periphery of the mold 25;
It is provided so that when raw rubber is molded into 411t'1 niblets, the rubber spreads all the way to the outer peripheral corners of the mold.

50 is a thin bottle provided on the bottom of the mold 25, and when the raw rubber is placed on the mold 25, it gets stuck in the raw rubber and prevents the raw rubber from shifting.

36 is a hole provided inside the platform 11a, and the bendable pipe 1:3a that supplies water vapor at a temperature of 1-40 to 200°C and a pressure of 1.2 kX/d is the hole entrance. 36a, the water vapor is introduced into the hole 3 (3), and the pipe 138' is bendable from the hole outlet 36b.
The temperature of the mold j1 is maintained at 140 to 200° C. to vulcanize the raw rubber.

37a... are holes provided at the four corners of the 1: mold], and are holes provided in the upper mold 12, which will be described later.
8... is provided for employment. 37b...
. is a through hole provided in the lower mold 11, and is provided so that a positioning fitting pin 43 provided in the core mold 20, which will be described later, is inserted.

; 39 is a stand on which the nozzle 2 ; 3 is set, which spouts water vapor at a temperature of 140 to 200"C and a pressure of 12 kg/cd from the tip;
m groove 3≦〕□l into which the groove 3a is inserted and the flange 23 of the nozzle 23
Horizontal groove 391) and ejection pipe 23 of nozzle 2;
A vertical groove 39 (t) is provided for e.
This is a groove into which R23c is fitted.

Next, the upper mold 12 will be explained in detail, and the I-type 12 is as follows:
The base part 12.1 and the mold part 1-2b are connected to the bolt 12c...
It is fixedly configured.

25' is a mold carved into the do surface of the mold part 12+), which includes a part 26' for forming the tire 110 part 101 of the center shaft 100, a part 27' for forming the lug 102, and a spoke covering part, which will be described later. The portion 28' forming part 1-03 is carved, and its surface is formed into a rough and rough surface.

41 is ^ ``The tip of the support bottle 29 is a hole for the worker, and 1
It is provided at the center of the lower surface of the platform 12a.

Reference numerals 31', . . . are through-holes, which serve as suction parts, bored in the bottom of the portion 27' of the mold part 121) for molding the lug 102. 32' is a through hole drilled across the -1- surface and the side surface of the base part ]-2a, and the pipe 33' is provided on the side surface side of the hole.
34' and 34' are seals, which are arranged in a circular manner carved on the lower surface of the base part 12a, sandwiching the holes [1] between the through-holes ai'... and 12'. &t t6.However, by connecting the pipe 33' to a vacuum pump and making the space between the seals 34' and 34' empty, the mold 25
When pressing raw rubber into the hole 31', the through hole 31' is formed.
The part 27' where the lugs 1 and 02 are formed by applying negative pressure to...
The rubber extends all the way to the bottom corners.

Reference numeral 35' denotes an upper hole provided on the outer periphery of the mold 41, and is formed so that when raw rubber is put into the mold 25' and press-molded, the rubber spreads all the way to the corners of the outer periphery of the mold.

36' is a hole cut into the inside of the base part] and 2a;
The temperature is 140 to 200°C and the pressure is 12kjc/aJ
A bendable vibrator 1; 3b that supplies water vapor is connected to the hole entrance 36a', and the aquatic fish 5I (is introduced into the hole 3G', and the bendable vibrator 13b' is introduced from the hole exit 36b'. The -L-shaped part 2 is maintained at a temperature of 140 to 200°C, which vulcanizes the raw rubber.

38... are fitting bins provided at the four corners of the core mold 20, which will be described later. ] Hole 37 a L:
:.

It is provided to fit in.

Reference numeral 39' denotes a holding stand provided opposite to the stand 39 on which the nozzle 23 is set. The nozzle 23 is held by a stand 39 and a presser stand 39' during press molding, and the tip of the ejection pipe 23e is positioned to protrude into the space formed by the molds 25 and 25'.

Reference numeral 30' denotes spoke support parts that support the spoke/J106 together with the spoke support parts 30 of the lower die 11, and are provided at three locations on the lower surface of the die part 12b. In addition, a movable support body 30a' that is movable up and down is provided in the center of the spoke support part 30'.
)) ' is biased in the -bird 1 direction.

Next, the core mold 20 will be explained. On the -1- side and the lower surface thereof, there are a hollow part jO8O8 forming part 45 of the tire body 301 of the wheel 100, which will be described later, a do mold 11 and an upper mold 1.
When press-molding the parts 2'I and 27' where the lugs 102 of No. 2 are to be molded, the rubber will spread all the way to the bottom corners. 46...], 02... The internal hollow part 108'... is formed in communication with the hollow part 108 mentioned in 111), and the rim 107 of the center shaft 100. If Li is the protrusion of the portion 47 (projection of the portion 47, fa is Li), the radius of the cavities 3 and 23 is also I41.
However, the radius LL of the hollow portion 123 is set to be smaller than the radius - of the rim 107. ), a portion 48 for molding a cavity into which the spokes 106 of the axle 100 are inserted, and two tire pieces 130 in the shape of a tire formed by the lower mold 11 and the upper mold 1.2). A mold 44 consisting of a joining margin Ei where the outer circumferential part and the inner circumferential part are joined and an annular groove part 60-61 for forming the toni 2 is carved.
Then, the surfaces of the molds 44 and 44 are treated with silicone baking (
Or, it is coated with fluorine (fluorine coating) so that the rubber can be easily removed after molding.

51... are thin bottles provided on the -L side of the mold 44, and when the raw rubber Δ is placed on the mold 44, it sticks to the raw rubber and prevents the raw rubber from shifting.

42... are through holes through which the fitting pins 38... of the mold 12 pass, and 43... are the lower mold 11. This is a fitting pin for alignment that fits into the through hole 37b provided in the.

49.49 removes the core mold 20 from the lower mold 1] and hangs it 11
These are the left and right suspension parts on which the wires, etc. of the lift are hung when lifting.

Next, the temperature at which the E-generated rubber is vulcanized in a short time is 140 to 20.
A hydraulic press molding device 1 is used which has a lower mold 11 and an upper mold 12 heated to 0°C and a core mold 20 whose temperature is adjusted to 70 to 110°C, which can mold raw rubber and not vulcanize in a short time. Now, a method for forming the S-wheel 100 will be explained.

First, a wheel body is constructed by welding together a circular iron boss 104 for attaching the wheel to the axle, an annular rim 107 made of iron pipes, and spokes 106 made of three iron pipes]-10 Prepare, please.

Boss 104 and spokes 1.06... are reinforcing iron plates 10
9, the adhesive B for bonding iron is applied to the entire wheel body 110, and after drying, the adhesive A for bonding rubber is applied to the entire L wheel body 110. Apply to the rubber-covered portions of the spokes 106 and the annular rim 107. Next, a liquid dissolved in a rubber solvent is applied to the outer periphery of the annular rim 107,
A band-shaped natural raw rubber C & adhesive with good adhesiveness is attached to the]-.
Furthermore, apply a solution of rubber dissolved in a solvent to the [-].

Next, the lower mold 1] is moved from the position facing the upper mold 12 toward the mouth of the left and right rails 10 and 10-1 to be positioned at the tips of the left and right rails 10 and 10. Part 1.

02.1
A band-shaped raw rubber D with cuts 11 made according to the pitch between 02 and 11 is heated to a temperature of 70 which can be molded and is not vulcanized in a short time.
Place the material preheated to 0°C on mold 25 of lower mold 1J. At that time, (part 2 where the cutting edge forms the lug 1.02
7. Place the raw rubber in the middle of 27.
The band-shaped raw rubber D is poured into the bin 50 so that it weighs about 5 tons.

Then, take out the temperature control bM14 or l') ψ type 20.

The four fitting pins 3 are stacked on the upper mold 11 so as to fit into the through holes 37b provided in the lower mold 1.

Then, the band-shaped raw rubber D is also placed on the mold 44 of the core/mold 20 101 . At that time, place the raw rubber band 1 on the upper mold IJ]
Same as I posted 1. , cut [I is in the middle of the protrusions 4G and 4G that form the lug L O25. In this position, press the pins 51 so that the raw rubber is attached to the protrusions 46 . The strip-shaped raw gogo A to D is secured at the .

Then, the core mold 20 is rolled 1; the mold 11 is moved to the right and left rails 10 and 10-hi in the A direction for seconds rfjJ+, and the mold 11 is placed in a position opposite to the rl- mold 12; The bubbly fitting pin 38 in position 1-2 is the one-through hole 42 of the core mold 20.
・Insert it into the hole 37a of 1.

H type 12, upper middle type 20, and lower type 11. Operate the hydraulic device 8 to move the vertically movable frame 6 upward until the two are in close contact with each other. At this time, the press pressure between each mold is about 100 to 120 kg/aJ, and about 2 boundaries are formed. Then, the band-shaped raw rubber D is press-molded in each mold 25, 25', 44, 44,
1 is the tire body 101 of the wheel 100, the lug]702...
, the hollow part 123 into which the lug J-02 and the rim J-07 are inserted.
... portion is a protrusion 46 formed on the core mold 20...
and suction with a vacuum pump from the through holes 31 bored in the bottoms of the parts 27...27' of the lower die 11 and the upper die 1.2 where the lugs 3.02 are to be formed. From Kototo 1,
Part 27 of molding molds 1, 1 and upper mold 12 for forming lug J02
The rubber spreads to the bottom corner of 27' in 1 minute and is molded neatly. After separating from the mold 20, the core mold 20 is stacked, and the lower mold 11 is moved toward the mouth on the left and right rails 1.0 and 1.0 and pulled out to the end of the left and right rails 1o-io. . Then, use a lift device to lift the core mold 20 from molds 1 and 2. Core mold 20
When the core mold 2 is stored again in the tempering storage 1-4,
The surfaces of molds 44 and 44 of 0 are treated with silicone baking (or fluorine coating) so that the rubber can be easily removed after molding, and the molds 25 and 25 of lower mold 11 and mold 12 are The 45% tire pieces 1:30 and 130 are molded because the surface of the 1:30 and 130 tires are roughened and the rubber is smooth and narrow.
1. and −■] type 12 remain.

In this way, as shown in FIG.
0.130 is molded, and each half-shaped tire piece 130, 130 is formed from the joint surface of the upper mold 1 and the upper mold 12.
Welding allowance E, I): 2 protrudes (the part formed by the annular groove parts 60 and 61 of the core mold 20), and
, the joining allowance Ei・I) 4 has not yet been vulcanized since it has been formed using the middle and lower molds 20, so in the first step, the half tire pieces 13 Q・130 are joined together and vulcanized. When you do, it becomes -.

The two half-shaped ties/pieces 1;30.];)0 are firmly adhered and molded. Moreover, the shape of this joint allowance E is formed in an inclined shape, with the protrusion amount d, l being smaller on the outer circumferential side (IA surface) of the tire, and the protrusion amount d, being larger on the inner side of the tire. It is two half-split tire pieces 130.J.
, 30 are joined together, the lower die 11. and upper mold 12
The outer circumferential side, which affects the outer surface where vulcanization is progressing, should have a small amount of protrusion necessary for adhesion. In addition, the unvulcanized inner side that is not in contact with the lower mold 11 and the lower mold I2 is made to protrude by a large amount to prevent wrinkles or streaks from forming on the surface. Excess rubber is built up in the hollow part 108.
1 to obtain sufficient adhesive strength.

. Next, insert the hole 105 of the boss 104 of the annular rim]-07 onto the outer periphery of the axle body]10 into the support bin 29 of the lower mold 11,
The axle body 1 is supported by the sports 106.
] The rim 10'7 of 0 is the half-split tire piece 13 of the lower die 11.
It is positioned in the cavity 123 into which the rim 107 of 0.130 mm is inserted.

Then, move the lower mold 11 again on the left and right L bar l O 10 in the A direction, and place it in a position opposite to the upper mold 2.
The lower die 1 is placed so that the tip of the ejection pipe 2311 of the nozzle 23 is located in the hollow part lO8 of the half-split tire pieces 130, 130.
Nozzle 23 is installed on the 1st stand: 39, I-, type 12
The alignment fitting pin 38... is the hole 37a of the lower mold 11.
1, and operate the hydraulic device 8 until the upper mold 12 and lower mold 11 come into close contact with each other, and lower the lower moving frame 6).
Move/Kell. At that time, the pressing pressure between the one-stroke shapes 11 and 12 is a pressure of 1 °C on the aquatic fish ejected from the tip of the nozzle 23.
It is better to make it larger than 2 pupils/j, but in the 5th embodiment, it is 100.
It is set at ~120 dazzle/d.

Then, operate the valve 24' of the pipe 24 to open the nozzle 2.
From the tip of No. 3, the humidity is 140-200℃ and the pressure is 12 pupils/
Make J's water vapor erupt.

Then, the tire (2) is vulcanized from the outside by the heat (temperature 140 to 200°C) of the lower mold 11 and the lower mold 12, and is ejected from the 5 nozzles 23.
3) It is also vulcanized from the inside with steam at 3. ．． Go to 5/10
-The whole tire is vulcanized in '4.

Nowadays, rim 1, tire piece 1 where O'l goes, H2O
・Cavity part of 1, 30'' 23・123 surface 123'12
3' has not been vulcanized yet since it is molded in the core mold 20, so it is properly bonded to the rim 107.

Furthermore, since the radius of the cavity 12:3 of the tire piece 130/1.30 into which the rim 107 is inserted is smaller than the radius of the rim 107, the iron rubber can be pressed directly onto the rim 107 during pressing. Suppressed, rim 10゛7 and tire piece 130
・Make sure the adhesion with 130 is done properly. Also 7ri8】0
A part of the extra rubber pressed in step 7 is hollow part i 08
Fall to the side Y: Gari.

Since it adheres to the rim 107 [a certain number of raw rubber C], the hollow part 1 O8 inner number 1 = high pressure water vapor is applied first, but the water vapor does not enter between the rim and the rim 107. To prevent. Therefore 1, rim 10'7 and tire piece 130
・The clitic with 130 is a strong j and a strong t.

Blister: A piece of tire had gotten inside the 30/130 rubber! f=-air (air enters inside the rubber when pressing the rubber, and air is generated inside the rubber due to heat and heat / 1
The mixed gas etc. is added during vulcanization! JIFt: °
Since C expansion is suppressed by the high pressure of the water vapor contained in the hollow portion 108, a stable and uniform rubber structure is obtained and a high quality tire is molded. Then, under the high pressure of the water vapor in the hollow part 108, the upper 2/Al 0 ? 4. ': Press tb to press the rubber built up in the hollow portion 108 and the band-shaped raw rubber C adhered to the rim 107 onto the rim 3-07. The rim 107 and the tire piece lH3O.130 are bonded even more firmly.

In this way, steam at 140 to 200°C is ejected from the nozzle 23, and after vulcanization for 5 to 10 minutes, the pulp 2
4' to stop the water jet/15 and release the water vapor in the hollow part 108 into the person f1]
Leave it as it is for about 1 minute to bring the inside of the hollow part 108 to a large odor pressure. After moving the vertically movable frame 6 downward using the hydraulic device 8 to separate the upper mold 12 and lower mold 11 and remove the nozzle 23, the lower mold 11 is moved toward the left and right rails JO. Pull out the left and right rails 10 to the tips of 10, and take out the 10Ω wheel from the lower mold 11.

And the jet from nozzle 23! 23C, the hole 11.2 formed on the outer periphery of the tie AI is closed by press-fitting and adhering a cylindrical rubber 1-13 having a diameter larger than the diameter of the hole 112. The upper mold 11 and the through holes 31 arranged in nine stages at the bottom of the parts 27 and 27' of the mold 12 for molding the lugs 102...;3
``'... A cylindrical rubber part that protrudes to the side j1 from the lug 102, which is formed by fitting extra rubber into the inside>-
1, 4... are cut and removed from the base, and the holes 35 provided in the lower die], 1 and the upper die 12...
・Lug 1 that got stuck inside during molding due to extra gore 11
．． The cylindrical rubber part that protrudes laterally from 02]]5... can be left as is because the amount of protrusion 79 on the child is small, but if it adversely affects the performance of the wheel, cut it off from the base and remove it. .

In this way, the wheels 100 shown in FIGS. 17 to 19 are manufactured, and the tire WR section]
A hollow part 108 is formed inside the tire, so when it is installed on a running vehicle, it provides good cushioning and good running performance.Also, there may be some holes caused by nails or the like stuck in the tire body. However, since the inside of the hollow part 1.08 is already at atmospheric pressure, there is no problem, and the number of conventional high-pressure air pumps is as follows:
You can continue driving without becoming unable to drive.

This is because the shape of the tire body 1.01 and the lugs 102 of the wheel 100 manufactured as described in "Yu" has a hollow part 10 inside.
This is because even if there are 8 tires, they support the vehicle body in the same way as solid tires.

To explain in more detail, tire part 11] 01 rim] -0
Part to be glued to 7 (hollow part), ■ side part of 08) 12
The thickness t of 0 is the thickness 1 of the 4-side portion 1-21 of the hollow portion 108. The hollow part 101 of the thick wall is formed thicker than τ' due to the reaction force of the waiting weight of the traveling vehicle body received from the road surface.
The 1L side portion 121 of No. 3 deforms and exhibits good flexiability of the wheel 100, but unnecessarily deflection is caused by the thick tire body], the portion bonded to the rim 107 of No. 3 (hollow portion). 1,08) is blocked at 1-20. The TQ Export 100 tire exhibits good cushioning properties and is able to support a running vehicle almost in the same way as a 4'' solid tire, despite having a hollow section 108 inside.

Therefore, since a hollow portion JO/□3′ communicating with the hollow portion 108 is provided inside the base of the lug 102, the lug 1
Due to the presence of the hollow portion 108', the stress applied to the lug 1027& is absorbed by the entire flexure of the lug 1027&, and since the hollow portion 108' communicates with the hollow portion 108, the stress applied to the lug 1027 is absorbed by the hollow portion 108. Since the lug is absorbed, the base part of the lug is less likely to crack and break, and the existence of the hollow part 108' and the hollow part 108 improves the cushioning properties and improves the running performance of the wheel. stomach.

Finally, the axle]-〇〇 boss 1.04 and spoke]06
...and reinforcement* Qj 1. , c) Color g with black paint of the same color as the rubber 14 Formed on the side surface of the tire, /'-annular $ 3. , 22 . . . If a paint of color or white is applied only to the side faces (the side faces located on the outside when mounted on the running vehicle body), the product value will be lowered and the axle 100 will be less expensive. The direction of the rotational force is specified by the shape of the lug 102 211. (lugged axles for agricultural machinery).

In almost all Dingtun experiences, the direction of rotation at time a is determined.

), when installing it on the vehicle body, the outside (11tt) colored paint is applied only on the side surface where it is located, so it will prevent you from installing it in the wrong direction on the vehicle body.

In addition, in the above example, the method of manufacturing a rubber V4L ring by press molding was shown, but in addition, the method of manufacturing a rubber v4L ring by press molding was shown, but there are also cases where rubber is manufactured by other molding equipment such as injection molding equipment. Process for manufacturing an axle. 17. How the present invention may be implemented.
Not forever.

[Brief explanation of drawings]

The figures show embodiments of the present invention, in which Fig. 1 is a side view of an oil l-f type press forming apparatus d, and Fig. 2 is a side view of a lower die j1.
Fig. 3 is a cross-sectional view of 81-S1 in Fig. 2, Fig. 4 is a plan view of
The figure is S, -S in Fig. 2, sectional view, and 514 is F in Fig. 2.
6 is a bottom view of the upper die 12, FIG. 7 is a cross-sectional view of the upper die 12, FIG. 8 is a cross-sectional view of S,=S, in FIG. 20 is a plan view, Figure 1.0 is a cross-sectional view of S, -S in Figure 9, Figure 11 is a 5l-86 cross-sectional view of Figure 9, and Figure 12 is a cross-sectional view of SS in Figure 9. Fig. 13 is a sectional view of S, -S of Fig. A side view of the wheel body 110 with the
1-7 is a partially cross-sectional side view of the formed axle i-00, FIG. 18 is a flat FAi view of FIG.
There is S-8 in Figure 7, cross-sectional view 'C. Symbols in the figure: 1- is a hydraulic f-less molding device, Jl- is a lower mold, 12 is a [- mold, 20 is a core mold, 2:3 is a nozzle, 3
i-31' is the tribute hole (suction part), 46 is the protrusion, 10
0 is the wheel, J, (,) l is the tire body, 102 is the lug, 103 is the Subopino covering part, 104 is the boss, 106
are spokes, 107 is IJ No. 4, 108 is hollow part.

Claims (1)

[Claims] (1) Tire pieces 130 and 13 are formed by molds 11 and 12 that mold the outer surface of the tire and mold 20 that molds the inner surface that has the hollow part 108 and the hollow part 123 into which the rim 107 is inserted.
0, the tire pieces 130 are joined to the hollow part 123 so that the rim 107 covered with rubber D is placed on the outer periphery facing the hollow part 108, and the pressure in the hollow part 108 is higher than atmospheric pressure. A method for manufacturing a wheel, which comprises integrally molding tire pieces 130 and 130 on a rim 107 by introducing pressurized gas.