JPH01257012A - Rotational heating and curing device for frp formed object - Google Patents

Abstract

PURPOSE:To cause the dimension of the outer diameter of a formed object to be uniform in diametral and also axial direction by providing the rocking mechanism rocking the formed object up and down to horizontal surface in the rotation process of the formed object. CONSTITUTION:One end 22a of a mandrel 22 is chucked onto the chuck 23 of a carriage 14 at a prescribed position outside of a heating furnace 10, and the other end thereof is supported in between both eccentric rollers 42, 43, whereby FRP formed object 24 is formed on the mandrel 22. The carriage 14 runs through the heating furnace 10 on each rail 12, 11. A chain 33 is provided, on the stretch, in between sprockets 20, 32, and when a motor 26 is rotated, the mandrel 22 is rotated through a rotary shaft 19. The outer end 22b is supported in between both eccentric rollers 42, 43, and while one eccentric roller 42 is rotated, the outer eccentric roller 43 is also rotated synchronously through a timing belt 45. Since both eccentric rollers 42, 43 are eccentrically rotated, the other end 22b is rocked up and down, while one end 22a is used as a fulcrum. Since the mandrel 22 is rotated and rocked up and down, the uncured resin in the FRP formed object 24 is not biased into diametral or axial direction, whereby the dimension of the outer diameter of the formed object 24 becomes uniform.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an improvement in a rotary heat curing apparatus for FRI molded bodies.

(Prior Art) Conventionally, a hollow tubular Frtf' molded body is formed by winding fibers (roving) 2 passed through 1 ffl of resin around a mandrel 3, as shown in FIG. 8, for example, by the filament winding method. , Then, this uncured FRP
The molded body 4 was manufactured by heating the molded body 4 in a heating furnace to harden the resin.

During heating in this heating furnace, the resin has a characteristic that its viscosity temporarily decreases in the initial stage of heating, and as a result, it flows onto the outer surface of the FTLP molded body 4 and is biased towards the upper part, causing the outer diameter of the FRP molded body 4 to decrease. Dimensions become non-uniform in the radial direction.

Therefore, in the heating furnace, uncured F was placed on mandrel 3 and B.
RI) A rotary heat curing method has been proposed in which the molded body 4 is heated and cured while being rotated about a substantially horizontal axis (see Japanese Patent Publication No. 62-771).

(Problems to be Solved by the Invention) However, it is very difficult to maintain the horizontality of the mandrel 3, and the mandrel 3 is often bent or rotated in an inclined state.

As a result, the resin flowing out on the outer surface of the FRP molded body 1 is biased toward the lower part due to the slope, and the FRP molded body 1 is
There is a problem in that the outer diameter dimension of the RP molded body 4 is not restricted in the axial direction.

The present invention was made in order to solve the above-mentioned conventional problems.
The main objective is to make the outer diameter of the shape uniform in the six radial directions.

(Means for Solving the Problems) Therefore, the present invention provides an apparatus for heating and curing an FRP molded body while rotating the molded body approximately in water and around an axis of rotation. , the molded body is provided with a swinging mechanism that moves the molded body in a downward direction (1π) with respect to a horizontal plane.

Another aspect of the present invention is that one end of the mandrel supporting the FRP molded body is connected to a rotational drive source via a universal joint, and the other end of the mandrel is supported by the swing mechanism. Features:

(Operations and Effects of the Invention) According to the present invention, while the FRP molded body is rotated, it is caused to swing vertically with respect to a horizontal plane by a swinging mechanism.

Therefore, even if the mandrel is bent or tilted, the uncured resin will not be biased towards the upper and lower parts due to rotation and vertical swing, so that the outer diameter of the molded body will be It is also uniform in direction.

This improves appearance and commercial value.

According to another aspect of the present invention, one end of the mandrel is connected to a rotational drive source via a universal joint, and the other end of the mandrel is supported by a swinging mechanism, so that one end of the mandrel is used as a fulcrum. All you have to do is hold the other end up and down using the swing mechanism, making the device simple! It becomes a hill.

(Example of Actual Duck) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, a pair of furnace rails 11.1 are installed in a heating furnace 10 located at a high place on a work floor 9.
Furnace rails 12, 12 are disposed outside the furnace at the trolley entrance 10a of the heating furnace 10, and the outside furnace rails 12, 12 are supported by lifters 13, Raised position consistent with rail + 1.11 and working floor 9
It is lifted and lowered to a lowered position that coincides with the upper running rail (not shown).

Then, the trolley 14 travels on the running rail of the work floor 9, transfers to the outer furnace rail 12 in the lowered position, and then moves from the outer furnace rail I2 in the raised position to the inner furnace rail 11 and travels into the heating furnace 10. I come to do it.

The cart entrance/exit lOa of the heating furnace IO has the entrance/exit 10.
A door (not shown) is provided to open and close a.

On the lower surface of the L-registered truck 14 are wheels 16 that roll on the L-registered rails 11 and 12. . . , 16 are provided, and an IF part core holder 17 is fixed to the upper surface of the surface in the running direction of the trolley 4, and a pair of bearings 18 and 18 are provided on the upper surface of the front core holder 17 to rotate the IF part core holder 17. A shaft 19 is supported.

A sprocket 20 is attached to the front end of the rotating shaft 19, and one end 22 of a mandrel 22 is attached to the rear end of the rotating shaft 19 via a universal joint 2+.
A jack 23 is attached to grip and support a.

A base 27 housing a motor 26 is disposed at a lower position outside the heating furnace 10 corresponding to the front core holder 17 of the cart I4 that has been driven into the heating furnace IO and stopped at a fixed position. On the upper surface of the base 27, a rotating shaft 30 having a bevel gear 29 attached to its rear end that meshes with the motor output shaft bevel gear 28 is supported by a pair of bearings 31, 31.

A sprocket 32 is attached to the front end of the rotating shaft 30, and the sprocket 32 and the cart 14 in the heating furnace IO are connected to each other.
A chain 33 that is inserted into and out of the heating furnace 10 is stretched between the front core holder 17 and the sprocket 20 .

Incidentally, reference numeral 34 denotes an idle sprocket provided on the front surface of the front core holder 17 of the truck 14, which applies tension to the chain 33.

On the other hand, a rear core holder 36 is fixed to the rear side of the truck 14, and a rear core holder 36 is fixed to the 42nd side of the rear core holder 36 (dispatch mechanism 3
7 is provided.

As shown in detail in FIGS. 3 and 4, the rocker tank 37 is fitted with a positioning hole 38 formed on the −F surface of the E rear core holder 36 (1γ positioning shaft 39 A supporter body 40 is provided, and a pair of front and rear brackets 41, 41 rising in the L direction are attached to the supporter body 40,
Eccentric rollers 42, 43 are interposed at left and right positions between the brackets 41, 41, and each eccentric roller 42, 43 is
The shaft portions 42a, 43a are rotatably supported by the brackets 41, 41.

An anti-slip rubber 44 is wrapped around one of the eccentric rollers 42 (on the left side in FIG. 3).

Sprockets 42b and 43b are attached to the shaft portions 4.2a and 43a of each eccentric roller 42 and 43, respectively,
A timing belt 45 is stretched between each sprocket 42b, 43b, and rotates both eccentric rollers 42, 43 synchronously.

The other end 221) of the mandrel 22 is rotatably supported between the eccentric rollers 42, 43.

If the structure is like two legs, one end 2 of the mandrel 22 is attached to the chuck 23 of the cart 14 at a predetermined position outside the heating furnace 10.
2a is chucked, and the other end 22b is attached to both eccentric rollers 42.
, 43, the FrtP molded body 24 is molded onto the mandrel 22 (see FIG. 1).

This trolley 14 is then driven into the heating furnace IO by means of the respective rails 12.11 and stopped at a fixed point.

Then, when the chain 33 is stretched between the sprockets 20 and 32 and the motor 26 rotates, the rotation axis! 9. The mandrel 22 is rotated via the universal joint 2+ and the chuck 23.

When the mandrel 22 rotates, the other end 22b of the mandrel 22 is supported between the center rollers 42 and 43, so the rotating force of the mandrel 22 rotates one eccentric roller 42 via the anti-slip rubber 44. The other eccentric (J-ra 43) is rotated synchronously via the timing belt 45.

As a result, both the eccentric rollers 42 and 43 rotate eccentrically, so that the curved end 22b of the mandrel 22 rotates while rotating.
The mandrel 22 can be swung vertically with respect to a horizontal plane using one end 22a (swivel U' 21) as a fulcrum.

Therefore, since the mandrel 22 rotates and swings up and down in the heating furnace 10, the uncured resin of the FRP molded body 24 is not biased towards the upper part in the radial direction due to the rotation, and is lowered in the axial direction due to the up and down swing. It becomes less biased depending on the part.

As a result, the outer diameter of the l1tP molded body 24 becomes uniform both in the radial direction and in the axial direction.

5 to 7 show a swing mechanism 47 of another embodiment.

The swinging mechanism 47 includes an elevating shaft 49 that is vertically movably guided by a guide sleeve 48 provided on the rear surface of the rear core holder 36, and a positioning hole 50 formed on the two end surfaces of the elevating shaft 49. The bracket 41 of the supporter body 40 includes a supporter body 40 having a positioning shaft 39 that fits into the bracket 41 of the supporter body 40.
．． A roller 51.5+ is rotatably supported at the left and right positions between 41.

An eccentric roller 53 is rotatably supported on the lower bracket 52 of the rear core holder 36.

The eccentric roller 53 contacts the lower end of the elevating shaft 49.

A sprocket 54 is attached to the shaft of the eccentric roller 53, and a sprocket 55 is attached to the other end 22b of the mandrel 22 supported between the rollers 51, 51. A timing belt 56 is stretched over.

Note that 57 is an idle sprocket provided on the side surface of the guide sleeve 48, and the sprocket 57 is biased by a spring 58 to apply tension to the timing belt 56.

With the above configuration, when the mandrel 22 rotates, the sprocket 55 at the other end 22b of the mandrel 22
, the eccentric roller 53 is connected via the timing belt 56.
is also rotated.

As the eccentric roller 53 rotates, the elevating shaft 49 is moved up and down, and the rollers 51 and 5+ are moved up and down together with the supporter body 40 supported by the elevating shaft 49.

As a result, while the other end 22b of the mandrel 22 rotates, the one end 22a of the mandrel 22 (universal joint 21)
It will be able to swing up and down with respect to the horizontal plane using the fulcrum as the fulcrum.

[Brief explanation of the drawing]

Fig. 1 is a side view of a rotary heat curing device according to a first embodiment of the present invention, Fig. 2 is a front view of Fig. 1, Fig. 3 is a front view of the Ji8 movement mechanism, and Fig. 4 is a Fig. 3 , FIG. 5 is a side view of the rotary heating curing device of the second embodiment, FIG. 6 is a front view of the swing mechanism, FIG. 7 is a side view of FIG. 6, and FIG. 8 is a filament winding method. FIG. 10...Heating furnace, 14...Dolly,! 7...Front core holder, 21...Flexible uT-122...Mandrel, 23...
- Jack, 24... FrtP molded body, 26... Motor, 36... Rear core holder, 37, . 17... Swinging mechanism, 42.43... Eccentric roller, 49... Lifting shaft, 51... Roller, 53... Eccentric roller. Patent applicant Mazda Motor Corporation

Claims (2)

[Claims] (1) A device that heats and hardens an FRP molded body while rotating it about a substantially horizontal axis, and includes a device that swings the molded body vertically with respect to a horizontal plane while the molded body is rotating. A rotary heating curing device for an FRP molded body, characterized in that a moving mechanism is provided. (2) A patent claim characterized in that one end of the mandrel supporting the FRP molded body is connected to a rotational drive source via a universal joint, and the other end of the mandrel is supported by the swing mechanism. A rotary heating curing device for an FRP molded article according to scope (1).