TW202019576A - Die for metal tube extrusion - Google Patents

Abstract

The present invention discloses a die for extruding metal materials into metal tubes connected sequentially. There are multiple flow-slowing means disposed in the die for slowdown of the metal materials flowing through the die and changing the flow direction of the metal materials in the die so as to reduce the length of insufficient seam having irregular interface between adjacent metal tubes and prevent the wasting of the metal materials.

Description

Metal pipe extrusion mould

The invention relates to a metal tube extrusion die, in particular to a metal tube extrusion die for reducing the length of a metal tube segment to be removed including an irregular connection interface.

In the Republic of China Invention Patent No. 105116351, a "die for extruding metal pipes" is disclosed. Please refer to Figure 1. In the process of extruding metal pipes, a plurality of metal materials will be placed into an extrusion die in order to Extruded into interconnected metal tubes 10, an irregular connection interface 11 will be formed between adjacent metal tubes 10 connected to each other, the irregular connection interface 11 will affect the strength of the metal tube, so it is necessary to have this The metal pipe section 10a of the regular connection interface 11 is cut off. However, cutting off the metal pipe section 10a containing the irregular connection interface will cause waste of metal material.

The metal pipe extrusion die of the present invention is used to reduce the length of a metal pipe section to be removed including an irregular connection interface between adjacent metal pipes.

The main object of the present invention is to provide a metal tube extrusion die for extruding a plurality of metal materials into a plurality of sequentially connected metal tubes. The metal tube extrusion die includes a split die part and a forming die part, The diversion die part has a ring wall, a column and a plurality of truss, the ring wall surrounds the column, and the truss are connected to the column and the ring wall respectively, so that a shunt is formed between the adjacent truss Each shunting prop has a material inlet and a material outlet. The column has a tube extrusion part and a plurality of slow flow convex parts. Each of the slow flow convex parts is convexly arranged on a surface of the column. A forming die part is combined with the splitting die part, the forming die part has a first through hole and a second through hole, the first through hole communicates with the second through hole, and the second through hole communicates with each of the diverting channels In the discharge port, the tube extruding portion of the column is accommodated in the first through hole to form a tube forming flow channel, and each of the slow flow convex portions is located above the tube forming flow channel.

The present invention buffers the metal material passing through the shunt mold portion by the slow-flow convex portions, prevents the metal material from flowing directly to the tube forming flow path along the column, and changes the metal by each slow-flow convex portion The flow direction of the material to reduce the length of a metal pipe section containing an irregular connection interface between adjacent metal pipes to be removed, which can avoid cutting off the metal pipe section containing the irregular connection interface, resulting in metal material waste.

Please refer to FIG. 2, which is a die 100 for extruding a metal pipe of the present invention. The die 100 includes a split die part 110 and a forming die part 120. The die 100 is combined with a barrel 200 by the split die part 110. The metal materials 300 are sequentially placed in the ingot barrel 200, and each metal material 30 is sequentially squeezed into the die 100 by an extrusion head 400 to squeeze a plurality of metal tubes connected in sequence.

Please refer to FIG. 3 and FIG. 4, the shunt mold part 110 has a ring wall 111, a column 112 and a plurality of truss 113, the ring wall 111 surrounds the column 112, and the truss 113 are respectively connected to the column 112 And the ring wall 111, a shunt channel 114 is formed between the adjacent truss 113, each shunt channel 114 has an inlet 114a and an outlet 114b, and the column 112 has a tube extrusion portion 112a , A welding portion 112b, a diverting portion 112c and a plurality of slow flow convex portions 112d, the welding portion 112b is located between the tube extrusion portion 112a and the diverting portion 112c, and each of the diverting channels 114 is located at the diverting portion 112c Between the annular wall 111, the slow flow convex portions 112d are convexly arranged on a surface 112e of the column 112, preferably, the slow flow convex portions 112d are arranged on the surface of the column 112 at equal intervals 112e.

Please refer to FIGS. 3 and 4, the forming mold part 120 is combined with the diverting mold part 110, the forming mold part 120 has a first through hole 121 and a second through hole 122, the first through hole 121 communicates with the first Two through holes 122, the second through holes 122 communicate with the discharge openings 114b of each of the split channels 114, the tube extrusion portion 112a of the column 112 is received in the first through holes 121 to form a tube forming flow Channel 123, the welding portion 112b of the column 112 is located in the second through hole 122 to form a welding chamber H, each of the slow flow convex portions 112d is located above the tube forming flow path 123, and each of the slow The flow convex portions 112d are located below the discharge port 114b of each of the branch channels. Preferably, each of the slow flow convex portions 112d is provided at the welding portion 112b, and each of the slow flow convex portions 112d is located at the welding chamber H in.

Please refer to FIGS. 3 and 4, in this embodiment, the tube extruding portion 112a has an annular extruded flange 112h, the annular extruded flange 112h has an annular wall 112k, and the annular wall 112k faces the forming In the die part 120, the ring-shaped extruded flange 112h is located in the tube forming flow path 123, and each of the slow flow convex portions 112d is located between the ring-shaped extruded flange 112h and the inlet 114a of each of the branch channels 114 Preferably, each of the slow flow convex portions 112d is located between the annular extruded flange 112h and the discharge opening 114b of each of the branching channels 114.

Please refer to FIGS. 3 and 4, each of the slow flow convex portions 112d has a slow flow surface 112f and a flow guiding slope 112g, the flow guiding slope 112g has a first end edge 112i and a second end edge 112j, the first One end edge 112i is connected to the slow flow surface 112f, the second end edge 112j is connected to the surface 112e of the column body 112, preferably, the slow flow surface 112f is directed to the feed inlet 114a, and the flow guide slope 112g is directed to the In the forming mold portion 120, the slow flow surfaces 112f of the slow flow convex portions 112d are substantially flush and are located on the same axial plane, that is, the distance from each of the inlet 114a to the corresponding slow flow surfaces 112f is substantially the same.

Referring to FIG. 3, a central axis L passes through the center of the column 112, and there is a first distance d1 between the central axis L and the ring wall 112k of the annular extruded flange 112h, and the central axis L to the There is a second distance d2 between the second end 112j, the second distance d2 is not greater than the first distance d1, the center axis L to the first end 112i has a third distance d3, the first distance d1 Not greater than the third distance d3.

Please refer to Figures 1, 3, 4 and 5 to place each metal material 300 into the ingot barrel 200 and press the metal material 300 with the extrusion head 400, please refer to Figure 5 to make the metal After the material 300 passes through the ingot barrel 200, it interferes with the column body 112 and is squeezed into each of the flow channels 114. Please refer to FIGS. 5 and 6, the metal material 300 passing through each of the flow channels 114 will be squeezed to The welding chamber H is extruded through the tube forming runner 123 to become a metal tube 500, and then, other metal materials 300 are sequentially placed into the ingot barrel 200 and passed through the extruded metal tube The die 100 is extruded to form a plurality of metal tubes 500 connected in sequence.

Please refer to FIG. 5 and FIG. 6, a first metal material 300a and a second metal material 300b that enter the shunt 114 and the welding chamber H will form a mixed interface in the extruded metal tube mold 100 a. After the slow-flow convex portions 112d slowly flow through the second metal material 300b of each of the flow channels 114, the second metal material 300b flows through the welding chamber H, and then forms the flow channel 123 through the tube Being squeezed out, each of the slow-flow convex portions 112d protruding on the surface 112e of the column 112 can buffer the second metal material 300b passing through each of the shunt 114 to prevent the second metal material 300b from following the The column body 112 flows directly to the tube forming flow channel 123, and the flow direction of the second metal material 300b is changed by each of the slow flow convex portions 112d, so that the first metal material 300a and the second metal material 300b can be welded After the connecting chamber H is connected, the tube forming flow channel 123 is extruded. Please refer to FIG. 6. Between the sequentially connected metal tubes 500 extruded through the extruded metal tube die 100, there is a A metal pipe section 510 of the irregular connection interface 500a to be removed can be shortened by each of the slow-flow convex portions 112d, so that the distance between adjacent metal tubes 500 can be reduced The length of the metal pipe section 510 to be removed in the regular connection interface 500a, because the metal pipe sections 510 to be removed must be cut off, so when the length of the metal pipe section 510 to be cut out including the irregular connection interface 500a When shrinking, relatively, it can avoid the waste of metal materials.

The scope of protection of the present invention shall be deemed as defined by the scope of the attached patent application. Any changes and modifications made by those who are familiar with this skill without departing from the spirit and scope of the present invention shall fall within the scope of protection of the present invention. .

10: Metal tube 10a: Metal pipe section 11: Irregular connection interface 100: Die for extruding metal pipes 110: Shunt mold department 111: Ring Wall 112: cylinder 112a: Tube extrusion department 112b: Welding Department 112c: Shunt 112d: Slow flow convex 112e: surface 112f: Slow flow surface 112g: Diversion slope 112h: Ring-shaped extruded flange 112i: first edge 112j: second edge 112k: ring wall 113: Truss 114: shunt 114a: feed inlet 114b: Outlet 120: Forming die department 121: first through hole 122: second through hole 123: tube forming runner 200: ingot bucket 300: metal material 300a: the first metal material 300b: Second metal material 400: extrusion head 500: metal tube 500a: irregular connection interface 510: Metal pipe section to be cut a: connection interface d1: first distance d2: second distance d3: third distance H: Welding room L: central axis

Figure 1: A perspective view of a metal tube extruded with a conventional extrusion die. Figure 2: The perspective view of the metal tube extrusion die, ingot barrel, metal material and extrusion head of the present invention. Figure 3: An exploded sectional view of the metal tube extrusion die of the present invention. Fig. 4: A perspective sectional view of a metal tube extrusion die of the present invention. Figure 5: Schematic diagram of the metal material being extruded into the metal pipe extrusion die of the present invention. Fig. 6: A perspective view of a metal tube extruded by the metal tube extrusion die of the present invention.

100: Die for extruding metal pipes

110: Shunt mold department

112: cylinder

112d: Slow flow convex

123: tube forming runner

300a: the first metal material

300b: Second metal material

500: metal tube

a: connection interface

H: Welding room

Claims (18)

A metal tube extrusion die is used to extrude a plurality of metal materials into a plurality of sequentially connected metal tubes. The metal tube extrusion die includes: a shunt die part with a ring wall, a column and a plurality of truss , The ring wall surrounds the column, and the truss are connected to the column and the ring wall respectively, so that a shunt channel is formed between adjacent truss, each shunt prop has a material inlet and a material outlet, The column body has a tube extruding part and a plurality of slow flow convex parts, each of the slow flow convex parts is convexly arranged on a surface of the column body; and a forming mold part, which is combined with the dividing flow mold part, the forming mold part It has a first through-hole and a second through-hole, the first through-hole communicates with the second through-hole, the second through-hole communicates with the outlet of each shunt, the tube extrusion part of the cylinder The first through hole is accommodated to form a tube forming flow channel, and each of the slow flow convex portions is located above the tube forming flow channel. The metal pipe extrusion die as described in item 1 of the patent application range, wherein the slow flow convex portions are arranged on the surface of the column at equal intervals. According to the metal pipe extrusion die described in item 2 of the patent application range, each of the slow flow convex portions has a slow flow surface, and the slow flow surface faces the inlet. The metal pipe extrusion die as described in item 3 of the patent application scope, wherein the slow flow surfaces of the slow flow protrusions are substantially flush and located on the same axial plane. The metal tube extrusion die as described in Item 3 of the patent application range, wherein each of the slow flow convex portions has a flow guiding slope, and the flow guiding slope faces the forming die portion. The metal pipe extrusion die as described in items 1, 2, 3, 4 or 5 of the patent application scope, wherein the column body includes a welded portion and a diverging portion, the welded portion is located in the pipe extruded portion and the Between the shunt parts, each shunt channel is located between the shunt part and the ring wall, the welding part is located in the second through hole to form a welding chamber, and each of the slow flow convex parts is provided in the welding And each of the slow flow convex portions is located in the welding chamber. The metal tube extrusion die as described in item 1 of the patent application scope, wherein each of the slow flow convex portions is located below the discharge port of each of the branching channels. The metal tube extrusion die as described in item 1 of the patent application scope, wherein the tube extrusion part has an annular extrusion flange, the annular extrusion flange is located in the tube forming flow channel, and each of the slow flow convexities The part is located between the ring-shaped extruded flange and the feed inlet of each of the shunt channels. The metal pipe extrusion die as described in item 8 of the patent application range, wherein each of the slow flow convex portions is located between the annular extrusion flange and the discharge opening of each of the flow distribution channels. According to the metal pipe extrusion die described in item 8 of the patent application, wherein a central axis passes through the center of the cylinder, each of the slow flow convex portions has a slow flow surface and a diversion slope, and the diversion mask has a first An end edge and a second end edge, the first end edge is connected to the slow flow surface, the second end edge is connected to the surface of the cylinder, and the central axis is between a ring wall of the annular extruded flange With a first distance, there is a second distance between the central axis and the second end edge, and the second distance is not greater than the first distance. The metal pipe extrusion die as described in item 10 of the patent application range, wherein the central axis has a third distance from the first end edge, and the first distance is not greater than the third distance. A shunt mold part of a metal tube extrusion mold for extruding a plurality of metal materials into a plurality of metal tubes connected in sequence, the shunt mold part has a ring wall, a column and a plurality of truss, the ring wall surrounds The column, and the truss are respectively connected to the column and the ring wall, so that a shunt channel is formed between the adjacent truss, each of the shunt props has a material inlet and a material outlet, characterized by: The column body has a tube extrusion part and a plurality of slow-flow convex parts, and each of the slow-flow convex parts is convexly arranged on a surface of the column body. The split die portion of the metal tube extrusion die as described in item 12 of the patent application range, wherein the slow flow convex portions are arranged at equal intervals on the surface of the cylinder. The split-flow die part of the metal pipe extrusion die as described in item 13 of the patent application range, wherein each of the slow-flow convex parts has a slow-flow surface, and the slow-flow surface faces the inlet. The split-flow die part of the metal tube extrusion die as described in item 14 of the patent scope, wherein the slow-flow surfaces of the slow-flow protrusions are substantially flush and located on the same axial plane. The split die portion of the metal pipe extrusion die as described in item 12 of the patent application scope, wherein each of the slow flow convex portions is located below the discharge port of each of the split channels. The split die portion of the metal tube extrusion die as described in item 12 of the patent application scope, wherein the tube extrusion portion has an annular extrusion flange, and each of the slow flow convex portions is located on the annular extrusion flange and Between the feed openings of each of the flow channels. The split die portion of the metal tube extrusion die as described in Item 17 of the patent application range, wherein each of the slow flow convex portions is located between the annular extrusion flange and the discharge port of each of the split channels.

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