JPS585744B2 - Drawing device of centrifugal casting equipment - Google Patents

Description

[Detailed description of the invention] The present invention provides a centrifugal casting apparatus. Relating to a pulling device.

In conventional centrifugal casting equipment, the rotating metal frame generally moves in the direction of its axis. The device for pulling out the casting tube basically consists of a five-piece chucking device that is fixedly installed in a predetermined position, although it may be retracted due to the relationship with other devices such as the front cover mounting device. The tube is pulled out by movement, and after the rotating metal frame moves, the pulled out tube is supported on a rotating wheel stand that protrudes below the tube, and when the drawing is completed, it is rolled on this turning wheel stand and carried out to the side. was.

By the way, from the perspective of further improving productivity,
Although the advantages of centrifugal casting equipment using a stationary rotating metal frame with the rotating metal frame set in a predetermined position are being reconsidered,
No device has yet been proposed for efficiently pulling out a cast tube from such a stationary rotating metal frame.

In view of this situation, the present invention aims to provide a drawing device that can efficiently pull out a tube from a stationary rotating metal frame and prevent the tube from becoming oval when pulled out to a predetermined position. One embodiment will be described below based on the drawings.

In FIG. 1, 1 is a rotating metal frame, 2 is a heat treatment furnace as a device into which the tube P pulled out from the rotating metal frame 1 is transported, and the tube loading chamber 3 and the rotating metal frame 1 are in line with each other. It is arranged.

Reference numeral 4 denotes a guide rail laid between one end 1a of the rotary metal frame 1 and the outside position of the end opposite to the rotary metal frame through the inside of the pipe introduction chamber 3. A pull-out cart 5 is provided so as to be movable.

The pull-out truck 5 is appropriately driven by a drive device not shown.

The pull-out cart 5 is provided with an elevating platform 7 that can be moved up and down via a link mechanism 6, and a chucking device 9 is provided on the elevating platform 7 via a bracket 8 so as to be vertically swingable.

The gripping portion 9a of the chucking device 9 is rotatably provided.

Reference numeral 11.12 denotes a tube support truck that rotatably supports the tube P pulled out from the rotary metal frame 1 from below, and includes a link mechanism 15.
The support frames 13 and 14 are respectively provided so as to be able to be raised and lowered via the support frames 13 and 14.
Each support frame 13, 14 is rotatably supported by a support roller 16, 17.
have.

These tube carriers 11 and 12 are movable along a guide rail 10 laid concentrically inside the guide rail 4, and a portion 10a of the guide rail 10 adjacent to one end 1a of the rotating metal frame is Lifting device 19 installed in the pit 18
It is provided on the lifting platform 20 of.

When the lifting platform 20 is in the lowered state, the tube support carts 11 and 12 supported thereon are completely retracted into the pit 18, and the pull-out cart 5 is positioned above it and chucks the pipe P in the rotating metal frame 1. It is ready to be gripped by the device 9 (21 is the tube support cart 1).
1 is an engagement protrusion protruding from the end opposite to the rotating metal frame 1, and 22 is an engagement protrusion provided at the end of the pull-out cart 5 on the rotating metal frame 1 side so as to be able to engage with the engaging protrusion 21. The member is pivotable upward to a disengaged position.

A pit 30 is formed at the moving end position of the tube carrier 11, and a rotation drive device 31 for the tube P supported on the support roller 16 is disposed within the pit 30.

The rotary drive device 31, as shown in FIGS. 2 and 3,
Bracket 3 is placed on frame 32 installed on the bottom of the pit.
3, a reducer 36 having an upward output shaft connected to the air motor 34 via a coupling 35, and a rotary connecting member 3 attached to the output shaft.
7, the rotary connecting member 37 is provided with an engaging groove 38 into which the rotary engaging member 65 on the tube holder cart 11 side is fitted, and a notch 38 on the circumferential side for regulating the rotation stop position. 3
9 is provided.

Reference numeral 40 denotes a pawl that engages with the notch 39, which is rotatably mounted on the top plate of the frame 32 and biased by a spring 41 in the engaging direction.

Reference numerals 42a and 42b are guide members that adjust the posture of the rotary engagement member 65 so that it can smoothly fit into and engage with the engagement groove 38.

Reference numeral 43 denotes a stop engagement member provided on the tube support carriage 11, with which an engagement arm 44 rotatably provided on the frame 32 rotates upward and engages with the stop engagement member 43 provided on the guide rail 10. The stopper 45 fixes the pipe carrier 11 in this position.

A cylinder device 46 rotates the engagement arm 44, and is rotatably attached to the side surface of the frame 32 via a bracket 47.

On the other hand, in the tube support truck 11, as shown in FIGS. 4 and 5, the support roller 16 is rotatably supported by a support shaft 50 installed on the support frame 13 via a bearing metal 51. A worm wheel 54 is fitted onto a cylindrical body 52 fixed to one of the support rollers 16 via a one-way clutch 53, and a worm 55 is engaged with the worm wheel 54.
a and 55b are bearings 56 attached to the side walls of the support frame 13
It is rotatably supported by.

The shaft ends of both worms 55a, 55b are arranged opposite to each other, and a bevel gear 57 is attached to each.

A cylinder 58 is suspended from the lower surface of the support frame 13.
A rotary shaft body 60 is rotatably supported by the rotary shaft body 8 via bearing metals 59a and 59b, and a bevel gear 61 that meshes with the bevel gear 57 meshes with the upper end of the rotary shaft body 60.

A spline hole 62 is bored in the rotating shaft body 60, and a spline shaft portion 64 that engages with the spline hole 62 is formed on the upper part of the rotating shaft 63 rotatably supported by the tube support carriage 11. The rotary engagement member 65 is attached to the lower end of the shaft 63.
is installed.

66 is a bearing of the rotating shaft 63, 67 is a moving block connected to one free end of the link mechanism 15, and 69 is a moving block 67.
The driving screw shafts 70a and 70b are bearings thereof.

Next, to explain the operation, when the casting is completed in the rotating metal frame 1, the drawing carriage 5 is moved toward the rotating metal frame 1 with the tube support carts 11 and 12 retracted into the pit 18, and the chucking After engaging and gripping the socket end of the pipe P from the inside by the gripping part 9a of the device 9, the extraction cart 5 is moved backward in a direction away from the rotary metal frame 1, and the pipe P is also pulled out from the rotary metal frame 1.

The drawn tube P is supported by lifting the tube carriers 11 and 12 from the pit 18, and in this supported state, the drawing truck 5 is further moved backward and carried into the heat treatment furnace 2 as shown in FIG.

When the tube P is located at a predetermined position in the tube loading chamber 3 of the heat treatment furnace 2, one of the tube carriers 11 engages with the stopper 45 and stops. The rotational engagement member 65 engages with the rotational coupling member 37 of the rotational drive device 31 in the pit 30 .

Further, the gripping of the pipe P by the chucking device 9 of the drawing cart 5 and the engagement between the engaging member 22 of the drawing cart 5 and the engaging protrusion 21 of the tube holder cart 11 are released, and the drawing cart 5 is released from the heat treatment furnace 2.
The tube support carriage 11 is fixed by the engaging arm 44.

Next, the air motor 34 is driven, and the rotary coupling member 37
The transmission device on the tube support cart 11 side, that is, the rotating shaft 63, the rotating shaft body 60, the bevel gears 61, 57, the worms 55a, 55b, and the worm wheel 54 through the engagement between the engagement groove 38 and the rotating engagement member 65. , the pair of support rollers 16 are rotationally driven via the one-way clutch 53 and the support shaft 50, and the tubes P on the support rollers 16, 17 of the tube carriers 11, 12 are rotated around their axes, forming an elliptical shape. This prevents

Note that since the gripping portion 9a of the chucking device 9 is rotatably provided, the pipe P can be pulled out even while the rotary metal frame 1 is rotating, and the pulled out pipe P is attached to the tube support carriage 11.
, 12 on the supporting rollers 16, 17 due to inertia, the tube P can be rotated to prevent ovalization even during the drawing process.

According to the drawing device of the present invention, as is clear from the above explanation, the pipe in the stationary rotating metal frame is moved by chucking the pipe, and the pipe is supported by the tube support car, so that the rotating metal can be moved. The tube can be efficiently pulled out from the frame, supported and transported, and the tube can be rotated while being pulled out to a predetermined position to prevent it from becoming oval.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall front view;
FIG. 2 is a plan view of the rotary drive device, FIG. 3 is a front view thereof, FIG. 4 is a longitudinal sectional front view of the tube carrier, and FIG. 5 is a longitudinal sectional side view thereof. 1...Rotary metal frame, 2...Heat treatment furnace, 3
... Pipe loading room, 5 ... Pulling trolley, 9.
...Chucking device, 9a...Gripping part, 11, 12...Pipe support cart, 13...
Support frame, 16.17...Support roller, 18...
... Pit, 19 ... Lifting device, 30 ...
... Pit, 31 ... Rotation 7 Drive device, 3
4... Air motor, 37... Rotating connection member, 38... Engaging groove, 50... Support shaft, 53... One direction Clutch, 54...
Worm wheel, 55a, 55b... Worm, 57, 61... Worm, 60...
・Rotating shaft body, 62...Spline hole, 63...
...Rotating shaft, 65...Rotating engagement member.

Claims (1)

[Claims] 1. A drawing truck equipped with a chucking device that clamps the tube body and a tube support truck equipped with rollers that rotatably support the tube body pulled out from the metal frame are provided so as to be movable toward and away from the metal frame, A driving device for the rollers of the tube holder is provided at a moving end position of the tube holder that is spaced from the metal frame, and a transmission is provided on the tube holder that engages with an output end of the drive to transmit rotational force to the roller. A drawing device for a centrifugal casting device, characterized in that it is provided with a device.