JPS59202141A - Device for producing curved mold for continuous casting - Google Patents

Abstract

PURPOSE:To work a titled casting mold at a stroke to the shape approximate to a final shape by providing a die having a caliber conforming to the outside shape of the casting mold in such a way that the die can tilt in the drawing direction, connecting a mandrel having a curved shape to a connecting rod penetrating the die and stretch reducing a blank pipe. CONSTITUTION:A die 1 having a caliber 1' conforming to the outside section of a casting mold is supported by a support 10 via a die case 8. A guiding rod 10' at the rear of the support 10 is fitted to a channel-shaped taper guiding groove 12 of a die stand 11 and is made tiltable around the transverse axial line intersecting orthogonally with the stretch drawing direction. A connecting rod 5 connected via a junction link 7 to a gripper 4 is inserted into the caliber 1' of the die 1. A curved mandrel 6 having a square section is coupled by means of a screw 14 to the top end of said rod. The mandrel 6 is expanded and forced into a blank pipe 5 and the assembly is stretch drawn by the die 1, by which the exact internal taper of the casting mold is formed on the inside surface of the pipe 15.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention includes an apparatus I for manufacturing continuous casting molds and IfaVc curved molds by cold core drawing. Related to VC.

KFi is a process in which a tubular mold with a rectangular cross section made of copper or copper alloy used for continuous casting is formed into a curved external shape and an internal shape that includes a taper corresponding to the solidification shrinkage of [=i], which is conventionally used as a raw material. We manufacture right-angled tubes, bend them using presses, etc., and finish them with a tapered inner surface using machining, according to the required shape! T! l! It is built.

However, in order to achieve the required high precision, it takes a lot of effort to correct the deformation during bending, and to finish the precision inner taper by machining, chemical polishing, etc., resulting in high manufacturing costs. K was developed to solve the complexity of the manufacturing method, and it provides a manufacturing device ff for curved continuous casting molds that can be processed into a shape K close to the final shape of the mold all at once by cold-opening processing. This equipment uses core metal drawing, but unlike those that perform only linear processing such as core metal drawing or expansion drawing of large pipes,
It also makes it possible to process irregular shapes by curving the mold and forming a taper on the inner surface during the drawing process.

A structure is provided to prevent these non-linear formations from interfering with the drawing operation itself. In other words, 1) the curved continuous casting mold manufacturing apparatus of the present invention, the curved outer shape of the mold; The die case can be tilted so that the die faces perpendicular to the tangent line at each position of the curved curve, and the die case also tilts to correct the deviation in the horizontal position of the center at each position of the curved curve. The stroke can be moved up and down. The tapered inner surface of the mold is formed by bringing a wood pipe into close contact with a tapered curved core metal. Thus, the curved mold manufacturing apparatus of the present invention is constructed.

The overall structure is such that a die having a mold hole that conforms to the external shape of an n-type 1tFr surface is pivoted to a support so as to be tiltable about a horizontal axis perpendicular to the drawing direction of a drawing machine.

The support is movably attached to the guide stand of the drawing machine along the longitudinally inclined guide, and a connecting rod extending forward from the glyph Δ of the carriage at the rear of the drawing machine is passed through the mold hole and inserted into the blank pipe at its front end. It is characterized by being connected to a curved core metal that matches the curved inner surface shape of the mold into which it is fitted. Here, the vertical and horizontal relationships are determined by defining the vertical direction as including the curve of the core metal.

9, Part 2, I-IIJ] will be specifically and detailedly explained with reference to the examples shown in the attached drawings. Figure 1 Kaoru) (b) and #-i
A schematic diagram showing the relationship between the mold woodwind and the die as the drawing process progresses to conceptually illustrate the Shock Q1, Figure 2 is a diagram showing an outline of the overall configuration of the device, and Figure 3 is an uninvented example. FIG. 4 is a partial cross-sectional plan view of the example device; FIG.
The figure is the front view on the left half of the center line, and the right cow yc @ f
FIG. 6(h) is a diagram of one example of a combination of a Vi ligature tube and a core metal, and FIG. 6(b) is a diagram of another example.

FIG. 2 shows a schematic configuration of a core drawing device.

The front die (1) is connected to the rear feed chain (2).
) r (Join the rear end of the gripper (4) K of the connecting rod (5) of the carriage (3) that is locked and moves backward, and connect the core (6) K through the die (1) in front of it. , the core metal (6) is pulled from the rear in the direction of the arrow (,).
is passed through the mold hole of the die together with the blank tube Q5 fitted into it, and the core metal of the blank tube is drawn. This is a draw bench configuration that draws linearly in the horizontal direction.

In the present invention, the connecting rod (5) is connected in the middle by a relay link (7) so that it can respond to the movement of the die (1), thereby providing quick response to movement.

In the front part of the drawing machine shown in Figures 3.4 and 5, a die (1) is fitted into a die case (8) K, which has a die hole (1) that matches the external cross section of the mold.

The die case (8) #'i is tiltable around the horizontal axis perpendicular to the direction of drawing force due to traction from both sides, and is pivoted to the support (to) by bearings (9) K at both ends. . The guide stand 01 at the front of the draw bench is gate-shaped, and a vertical dovetail groove-like inclined inner groove @ is provided on both sides, into which the guide strips QI at the rear of the support αG are respectively fitted. The die (1), the die case (8), and the i special holiday Qfl can be moved in the vertical direction along the inclined guide. The kiln is a bearing needle that facilitates the movement of these parts. Also, the slope of the guide part (F) (G) is the support α1.
Although the angle A is provided to smooth the vertical movement of the A, it is preferable to make the angle as small as possible, and it may be 0 as long as the smoothness of the upward and downward movement is ensured.

The front end of the connecting rod (5) is connected to the die (1)! ! l! 9, 3 through δ A4 K screw at the rear end of the curved core metal (6)
Connect more. The curved core metal (6) shall have its surface including the curve oriented perpendicularly as described above to determine the relationship between the vertical and horizontal directions of the device. The curved core metal (6) shall have the same dimensions and shape as the inward-facing shape of the product mold.O When drawing, a blank tube (G) is attached to the outer periphery of the curved core metal (6) in advance; As shown in Fig. 6 (1) K, the diagonal distance (T) of the core metal (6) with a K-square cross section of the base pipe (T) when fully expanded and press-fitted is greater than the inner diameter (D) of the base pipe. Similarly, when using a square cross-section wood pipe (G) as shown in Figure 6 (B), the outer circumference length ('rt, ) of the core metal (6) is equal to the inner circumference ('rt, ) of the base pipe (H). SoL), expand the pipe and press-fit it, and then draw the core metal. In this way, if you attach Q5 (in place of one of the curved core metals (6) to a wood pipe with a proximal shape) and perform core metal drawing, the core metal ofjQ! Can be moved in response to the curved shape of 9 #i! , smooth drawing is performed between the die (1) and the inner surface of the base pipe 4 (to) is formed in close contact with the core metal (6), and the inner surface of the mold is in the shape of a regular mold inner surface.At the same time, Vc
Misalignment between the woodwind, die, and core metal tool, uneven thickness caused by directional deviation, non-uniform machining strain, etc. are kept to a minimum.

Figure 1 0) and C9 core metal At the beginning and end of drawing, the die ( Rather than the die (1) facing at a right angle, the die (1) is tilted at an angle (
-(-α) Indicates the state of tilting, and Fig.
C) is shifted by a distance (8) from the original center (C).

A state in which the dice (1) moves in response to the guidance (6) is shown.

The structure and operation of the device of the present invention are as described above.1.According to the device of the present invention, a continuous casting mold having irregular shapes such as curvedness and internal taper can be plastic-worked into an approximate shape from a raw pipe at once by cold working. It is easy to work, and a product mold with less uneven thickness and less distortion can be obtained by natural plastic deformation, and the manufacturing process is significantly reduced compared to the conventional method.

[Brief explanation of drawings]

FIG. 1 is a diagram conceptually illustrating the drawing process of the apparatus of the present invention, showing the relationship between the raw tube and the die;
(b) shows the relationship between the two during drawing and (→ke) at the final stage of drawing. FIG. 2 is a diagram showing the schematic configuration of the drawing device. FIG. 8 is a partial cross-sectional plan view of the device according to the embodiment of the present invention. , Figure 4 #
:t A partial vertical side view of the same, and a front view of the left half of the center line in FIG. A partially longitudinal front view of the mounting section is shown on the right. Fig. 6(a) is a longitudinal sectional front view showing an example of a combination of a raw pipe and a core metal;
B) is a perspective view showing another combination. (1)...die, (1)...mold hole, (2)...feed chain, (3)...carriage range, (4)...gripper. (5)... Connecting body, (6)... Curved core metal, (7)...
Relay link, (8)...Dice case, (9)...
111 receiver, (1111...Support, QG...Guide strip, I...Guistand, 4...Slanted guide groove, o3...Bearing needle, α◆...Screw, C1f90G...Main pipe, (a) ... Traction direction, (T) ... Core metal diagonal distance,
(Do)...Main pipe inner diameter. (TL)...Core metal length, (80L)...Inner circumference length of raw pipe. (-(-α)... angle change, (c) (c)... center, (
S)...Distance Patent applicant's representative name Patent attorney Kaku 1) Yoshihiro...゛1 illustration 2 illustrations

Claims (1)

[Claims] A die containing a mold hole that matches the external cross section of the mold is pivoted to a support so as to be tiltable around a horizontal axis perpendicular to the drawing direction of a drawing machine, and the support is movable along a vertically inclined guide. Attach it to the drawing machine's grip stand, and insert the connecting rod extending forward from the gripper of the carry range at the rear of the drawing machine into a mold hole to fit the curved inner surface shape of the mold fitted into the 111iK blank tube. Manufacturing device 0 for a curved continuous casting mold characterized by being connected to a curved core metal