JPH021203B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous extrusion manufacturing method and manufacturing apparatus, and is applicable to Japanese Patent Application No. 59-14550, Japanese Patent Application No. 59-15299, and Japanese Patent Application No. 59-1529, both of which were filed at the same time. - a continuous metal extrusion device having the features described and claimed in any one of the three cases of No. 16183, or a combination thereof, and (b) receiving the extruded product from said extrusion device; and the product is delivered from the extrusion device such that one or more predetermined characteristics of the product (e.g., its cross-sectional size or shape) are altered in a desired manner before the product is delivered to a product collection and storage device. Includes extruded product processing equipment for processing during production. The extruded product is processed in the processing equipment while still at a high temperature due to the work done during the extrusion process.

Such a processing device comprises an extruded product processing device through which the extrusion device is processed and drawn out under tension from the extrusion device, and an extruded product processing device during which the extrusion device is processed and drawn out under tension from the extrusion device; and a tensioning device for continuously drawing the extruded product from and through the processing device. The processing equipment may include, for example, dies or other means for changing the cross-sectional size and/or shape of the extruded product and/or the surface finish of the product.

The tension applied by such product handling equipment is
Adequate care must be taken to ensure that the extruded product entering the processing equipment is not damaged or its properties are not compromised as the product leaves the extrusion equipment due to build-up to too high a level.
In particular, problems of control difficulty arise because the yield stress of hot extruded products depends on the temperature of the extruded product as it exits the extrusion equipment, which itself is the temperature at which the extruded product exits the extrusion equipment. It depends on the speed and the general operating temperature of the extrusion equipment.

According to one aspect of the invention, there is provided a continuous extrusion system that: (a) senses the temperature of the extruded product as the extruded product leaves the continuous extrusion device; and (b) a temperature sensing device that provides a reference temperature; (b) sensing tension across the length of the extruded product extending between the extrusion device and the processing device; and tension feedback due to the sensed tension across the length of the extruded product. a tension sensing device arranged to provide a signal; (c) responsive to the temperature reference signal and the tension feedback signal to control the tensioning device and detecting the sensed tension across the length of the extrusion device; , a control arranged to automatically control the tensioning device so as not to exceed a predetermined safety value less than the yield stress of the extruded product at the detected temperature when the extruded product exits the extrusion device; Equipped with equipment.

According to a second aspect of the invention, there is provided a method for processing a continuous extrusion product of metal exiting from a continuous extrusion device, the method comprising: (i) passing the extrusion product from the extrusion device through an extrusion product processing device; (ii) continuously applying tension as the extruded product is delivered from the processing device, thereby drawing the extruded product through the processing device and connecting the extrusion device and the processing device; inducing tension along the length of the extruded product while flowing it between devices; (iii) sensing the temperature of the extruded product as it exits the extrusion device;
generating a temperature reference signal according to the sensed temperature; (iv)
sensing tension across the length of the extruded product to generate a tension feedback signal due to the sensed tension; (v) the tension sensed across the length of the extruded product causes the extruded product to the temperature reference signal and the tension applied to the extruded product leaving the processing device such that it does not exceed a predetermined safety value that is less than the product yield stress at the temperature sensed when leaving the device; A continuous extrusion manufacturing method for metal products that is automatically controlled by a feedback signal, comprising the step (v) above.
(vi) according to a predetermined function of the value of said sensed temperature and the value of the safety tension induced within said length of the extruded product without exceeding the yield stress for said extruded product at the sensed temperature; converting the temperature reference signal 120 to a tension reference signal 126; (vii) comparing the tension feedback signal 116 and the tension reference signal 126; and then converting the tension feedback signal 126 from the value determined by the tension reference signal 126; the deviation of signal 116 generates a deviation signal; and (viii) the deviation signal is applied to the extruded product being delivered from the processing device to prevent the sensed tension from exceeding the safety tension value. and a point for controlling said tension.

Other aspects and advantages of the invention will be apparent from the following description and claims.

The invention will now be described with reference to the accompanying drawings with reference to embodiments of a continuous extrusion device.

In FIGS. 1 and 2, the illustrated apparatus is
carried in bearings (not shown) and coupled to an electric motor (not shown) via an interlock (not shown), thereby providing a speed range of selected speeds within the range of 0 to 20 RPM (greater speeds). is also acceptable)
In operation, the rotatable wheel member 10 is coupled via an interlock (not shown) to an electric drive motor (not shown) and carried in a bearing (not shown) to be driven. include.

This wheel member has a groove 12 surrounding its periphery.
A radial cross section of this groove is shown in FIG. The deep part of the groove has parallel annular sides 14 that connect with the radial bottom surface 16 of the groove. The tapered mouth portion 18 of the groove forms an inverted frustoconical surface 20,22.

A stationary show member 24 carried on a lower pivot pin 26 extends around approximately one quarter of the circumference of the wheel member 10 and cooperates closely therewith. The shoe member is held in the operative position shown in FIG. 1 by a retractable stop member 28.

The shoe member includes a centrally (axially) circumferentially extending protruding portion 30 with slight axial or lateral gaps 32, 34 on either side thereof.
It partially protrudes into the groove 12 of the wheel member 10 with a . This projecting portion 30 is constituted in part by a series of replaceable inserts and includes a radially oriented abutment member 36, an abutment member support 38 downstream of the abutment member, and an abutment member support 38 downstream of the abutment member. It includes a die block 40 (having an extension die 42) upstream of the member and an arcuate wear member 44 upstream of said die block.
Upstream of member 44 , an integrally formed inlet portion 46 of the shoe member completes an arcuate passageway 48 that extends downstream to a front face 54 of abutment member 36 and into feed material hopper 5 .
2 extends from a vertically oriented feed inlet passageway 50 disposed below the wheel member. This passage is shown in FIG.
The bottom surface 16 of the shoe member 24 and the central protruding portion 30 of the shoe member 24
It has a radial cross section defined by an inner surface 56 of the.

the abutting member 36, the die block 40,
Die 42 and arc member 44 are all constructed of a suitable hard, wear-resistant metal, such as high speed steel.

The shoe member has an exit hole 58 that aligns with a corresponding hole formed in the die block 40 through which the extruded metal product 61 (e.g. round wire) is delivered from the orifice of the die 42. .

As the wheel member 10 rotates, the inlet passageway 50
Powdered feed material introduced from the hopper 52 into the inlet end of the arcuate passageway 48 via the moving groove surface of the wheel member is directed counterclockwise in FIG. 1 along the length of the arcuate passageway 48. The die block 4 is conveyed in the direction, formed into a lump, and solidified.
A solid metal mass with no gaps is formed in the lower portion of the passageway adjacent to the passageway. This solid metal mass is continuously pushed against the abutting member under a large pressure by the frictional resistance of the moving groove surface. This pressure is sufficient to force the metal mass through the orifice of the extrusion die, thereby providing an extruded product which is discharged through holes 58 and 60 in the shoe member and die block. In particular, the manufactured product includes bright copper wire made from small cut pieces of wire that make up the feed material.

A water pipe 62 mounted about the lower end of the shoe member 24 has an outlet nozzle 64 located and fixed on the side of the shoe member located adjacent the wheel member 10. This nozzle is connected to the groove 12 of the wheel member 10 when the pipe is supplied with cooling water.
The jet of water is aligned to direct the jet of water directly onto a downstream portion of the abutment member located within and abutting the abutment member.
Thus, the apex of the free end of the abutment member (this is where most of the heat is generated during operation) and the joint surface and groove of the wheel member will be overlaid by the jets directed at them. directly cooled by the water flow.

The die block 40 has an internal water passageway (not shown) and a supply of cooling water for sealing off the product leaving the die and extracting some of the heat retained within the product. However, the abutment member is not provided with such an internal passage. The strength of this member is therefore not reduced by providing internal water cooling means to cool the member.

If desired, cooling of the device may be accomplished by providing a cooling water sprinkler 65 on the hopper 52 to feed a quantity of cooling water into the precision passageway 48 along with the powdered feed material. It will be improved.

In FIG. 2, the solidified metal mass in the extrusion area adjacent die block 40 is indicated at 66. From this metal mass, the product is extruded through an extrusion die 42 by the pressure in this area. This pressure also acts to force a quantity of metal between the side walls of the groove and each opposing surface of the die block and abutment member. This extruded metal is
Accumulates radially to form scrap metal pieces or "burrs". To prevent these pieces of scrap metal from growing too large to be handled or controlled, a plurality of laterally oriented teeth 70 are installed in the groove 1.
A tapered wall 2 constituting the mouth portion 18 of 2
It is fixed at 0,22. The teeth are evenly spaced around the wheel member, with teeth on one wall facing teeth on the opposite wall. If desired, teeth on one wall may be staggered to alternate with teeth on the other wall.

In operation, the sloped surface 72 of the die block 40 deflects the extruded scrap piece 68 obliquely into the path of each set of moving teeth 70. Interdiction of this scrap piece 68 by the moving teeth causes the scrap piece to cut or shred the extruded metal within the gap.
These scrap pieces are thus removed as soon as they have moved a sufficient distance in the radial direction, blocked by the moving teeth. In this way "burrs" are prevented from reaching an unmanageable size.

The teeth need not be sharply shaped and may be fixed on the wheel member 10 in any suitable manner, for example by welding.

Figures 3 and 4 show other teeth secured in a similar manner to other types of suitable surfaces of the wheel member 10.

In these different types of devices, the wheel member 10
The outer surface of cooperates with a correspondingly shaped surface of the cooperating shoe member 24, thereby providing burr control in a particularly desired manner. In FIG. 3, the flash is grown purely transversely or axially until it is stopped by radially projecting teeth, where it is shredded from the extruded metal within the associated gap.

In FIG. 4, the flash is grown diagonally (as in FIG. 2) but is blocked by teeth projecting radially from the surface of the wheel member 10.

For various reasons that will become clear from the explanation below, the extruded product (wire 6
It is desirable, and sometimes even necessary, to process 1) in extruded product processing equipment prior to delivery to product collection and storage equipment. Moreover,
It may be desirable or advantageous to process the extruded product while it is maintained at elevated temperatures from the continuous extrusion process in which it was produced.

Such processing equipment can, for example,
An extruded product can be provided with a larger diameter and/or a more uniform outer diameter or gauge. Such processing equipment is used to provide finished products of different gauges and/or tolerances from the same continuous extrusion product at different times. For such purposes, the processing equipment includes a single drawing die through which the extruded product is first passed and then pulled to tension to achieve the desired size, tolerance and/or quality. The above-mentioned finished product is provided. The use of such processing equipment to process extruded products has long been a problem since the continuous extrusion die 42 of the continuous extrusion equipment can be discarded due to excessive enlargement of the die hole due to wear during use. Make it available for use for a period of time. Additionally, such processing equipment allows production products of varying gauge tolerances and/or qualities to be produced in place of each other because the dies can be easily and quickly replaced.

An example of a continuous extrusion device that combines a continuous extrusion device and an extruded product processing device will be described below with reference to FIG.

The device shown in FIG. 5 is the continuous extrusion device 1 described above.
00, which can be modified as described below if desired, and the copper wire 102 produced by this device is the tension pulley device 10.
6 through the sizing die 104 (reducing its gauge to the desired lower value);
The wire runs around the tension pulley device to the storage device 1.
08 and passes through the coil winding machine 110 multiple times.

The pulley device 106 includes an electric torque motor 112
The energization of this motor is provided and controlled by controller 114 . The control device includes (a) an extrusion device 100 and a sizing die 10;
responsive to a first electrical signal 116 obtained from a wire tension sensing device 118 that engages the wire 102 at a position between 4 and 4 and provides an electrical signal due to the tension in the wire 102 as it exits the extrusion device 100; and (b) responsive to a second electrical signal 120 obtained from a temperature sensor 122 that measures the temperature of the wire 102 as it leaves the extrusion device 100.

The controller 114 controls the second (temperature) signal 12
0 in its output circuit in response to the second
Function generator 1 for providing a third electrical signal representing the yield stress tension for a particular wire 102 at a particular temperature represented by the (temperature) signal.
24. The third electrical signal 126 is sent as a reference signal to a comparator 128 (also forming part of the control device), where the first
(Tension) signal 116 is compared to the third signal (Yield Stress Tension). The output signal of the comparator constitutes a signal for controlling the energization of the torque motor.

In operation, the torque motor increases the tension of the wire leaving the extruder 100 to a value of a predetermined magnitude that is less than or equal to the yield stress tension for a particular wire at a particular temperature when the particular wire leaves the extruder 100. is energized to a magnitude sufficient to maintain it.

Although the above description describes a structure in which a water jet is used to cool the tip of the abutting member, a jet of other cooling liquid (or even cooling gas) can be used instead of water. Appropriate liquefied gases can also be used.

Regarding the burr removal teeth 70 in the above description, the following matters are considered: (a) The shape of the leading edge (cutting or breaking edge) of each tooth is not important as long as it can perform the desired burr removal function; (b) The working distance between adjacent opposing surfaces of the stationary shoe member 24 at the tip of each tooth 70 is also not critical, this dimension not exceeding 1 mm to 2 mm depending on the specific design of the device; (c) the greater the number of teeth spaced around each side of the wheel member 10, the smaller the length of "burr" removed from each tooth; and (d) these teeth are e.g. (e) Any conventional method may be used to secure the teeth to the wheel member.

The ability of this device to deliver an acceptable production product from a bulk granular or powdered feed material is determined by the arcuate shape within the pressure-generating zone located immediately forward (upstream) of the forward surface 54 of the abutment member 36. The radial depth (or height) of passageway 48 is
A considerable improvement can be achieved by relatively abrupt cancellation in the direction of rotation (as shown in the figure) in an appropriate manner.

A removable die block 40 is disposed circumferentially coextensive with that area, and said progressively decreasing shape of the radial depth of the arcuate passage is a die block facing the bottom of the groove 12 of the wheel member 10. This is achieved by appropriate shaping of the surface 40A.

The surface 40A of the die block is preferably shaped so as to obtain a feed metal flow pattern in the area when the device is operated that is very similar to that achieved when a solid feed material is used instead. Can be attached. In the preferred embodiment shown in the drawings, this surface 40A has grooves 12 at the point where it contacts the abutment member 36 at its front surface 54.
includes a planar surface inclined at a suitably small angle tangent to the bottom of the surface.

This angle corresponds to (a) the area of the abutment member exposed to the feed metal material at extrusion pressure, and (b) the radial cross-sectional area of the passageway 48 at the inlet end of said area (i.e. adjacent to the upstream end of the die block 40). (in radial cross-section) to (i) the apparent density of the feed material entering the area at its inlet end to (ii) the fully consolidated density located adjacent to the front surface 54 of the abutment member 36. Equal to the ratio of feed material density.

In one preferred embodiment, the planar surface 40A of the die block is such that the area of the abutment member exposed to the feed metal material at the extrusion pressure is larger than the area of the passageway 48 at the inlet end of the zone (i.e. the upstream end of the die block). The radial cross section is inclined at an angle equal to 1/2 of the radius.

If desired, in another embodiment groove 1
The surface of the die block facing the bottom of the die block 2 is beveled in the manner described above only over a major portion of the circumferential length of the groove extending from said upstream end of the die block, where it immediately adjoins the front face 54. The portion of the die block that lies above has a surface that lies parallel (or nearly parallel) to the bottom of the groove.

The aforementioned shaping of surface 40A provides greater penetration of die block 40 into groove 12 and also provides increased physical resistance against undesired extrusion of flash-forming metal through gap 32. , the amount of feed metal material that tends to form such flashes is greatly reduced. However,
The entry of the die block into the groove 12 reduces (a) the total work exerted on the feed material, (b) the amount of flash generated, and (c) the bending moment exerted on the abutment member by the pressure metal. . Furthermore, the selection of a planar working surface 40A for the die block reduces the cost of manufacturing the die block.

Although in the above description the wheel member 10 is driven by an electric drive motor at a speed within a defined range, other similarly functioning continuous extruders may use a hydraulic drive to maintain the proper operating speed. It acts on

Instead of introducing additional cooling water into passage 48 via sprinkler 65, hopper 52 and passage 50,
Such additional cooling water may be placed within the passageway at locations where the passageway is filled with particulate feed material but not completely solidified (e.g., in the shoe member 24).
(through a passageway 67 formed in).

The highly effective cooling effect provided by this invention is due in large part to the fact that the wheel is located temporarily adjacent to the hot metal in an enclosed extrusion area upstream of the abutment member. The heat absorbed by a portion of the member is transferred from this hot zone to a cooling zone located downstream of the abutting member (by the action of both heat conduction and rotation of the wheel member), in which Since the cooling fluid is supplied in large quantities and flowed over a relatively large area of the wheel member passing through this cooling zone, it draws therefrom a high proportion of the heat absorbed by the wheel member in the hot extrusion zone. .

In this cooling zone, access to the wheel element is less restricted and a relatively large surface of this element is freely available for cooling purposes. This is due to direct contact with extremely small and enclosed cooling surfaces (i.e. die blocks and abutment members) provided directly adjacent to the extrusion area in the parts of the shoe member that bound this extrusion area. It is. As previously mentioned, the cooling surfaces of these parts are severely limited by the need to preserve their mechanical strength and safely withstand the extrusion pressures exerted on them.

The transfer of the heat absorbed by the wheel members to the cooling zone is greatly improved by using the wheel members of metal with good heat conductivity and good specific heat (per unit volume). However, since the wheel member is made of a physically strong metal (eg tool steel) for reasons of adequate mechanical strength, it has relatively poor thermal conductivity.
The ability of the wheel member to transfer heat to said cooling zone is thus improved by closely fitting said wheel member with an annular band of metal with good heat absorption and thermal conductivity, such as a copper band. greatly increased.

Preferably, such a thermally conductive band is constituted by an annular band fixed around the periphery of said wheel member, at least in part, said circumferential groove providing said passageway 48. It is preferred to construct a portion of the wheel member formed by a shoe member or the like.

If the extrusion of this machine is suitably made of a metal with good thermal properties, the electrothermal band is made of the same metal (for example copper) as the extrusion.

In other cases, said thermally conductive band is embedded within or overlaid on a second annular band, said second annular band being made of the same material as the extrusion product of said machine and said second annular band being made of the same material as the extruded product of said machine. The two bands, which are in contact with the distal end portion of the contact member, are made of different materials.

The metal used for the heat transfer band is selected to have a product of thermal conductivity and specific heat per unit volume that is higher than that of tool steel, and includes the following materials (the higher the value, the higher the above product). ), namely copper, silver, beryllium, gold, aluminum, tungsten, rhodium, iridium, molybdenum, ruthenium, zinc and iron.

The heat transferred from the extrusion zone to the cooling zone by such a thermally conductive band depends on the radial cross-sectional area of the band and increases as this cross-sectional area increases. Thus, for a given cross-sectional dimension measured transverse to the circumference of the wheel member, the greater the radial depth of said band, the greater is the rate at which heat is transferred by the wheel member to the cooling zone. .

For said wheel member having an effective diameter of 233 mm and whose rotational speed is 10 RPM, said heat transfer band is made of copper with a U-shaped radial cross-section, and the wheel member provides a connection from the extrusion zone to the cooling zone. The abutment member 3 has a heat transfer rate of “R” and cooperates with the wheel member only by this rotation.
6 penetrates into this copper band, i.e. as the circumferential groove 12 changes in radial depth or distance.
Calculations were carried out as varying as the radial thickness "T" of the copper band remaining at the bottom of the plate was varied.
These calculations are based on the copper band having a generally circular interface in radial section with the adjacent part of the wheel member (tool steel). Thus, the radial cross-sectional area "A" of the copper band varies non-linearly with the radial thickness "T" of copper at the bottom of the groove 12.

T (mm) A (mm ² ) R (kW) 1.0 18.0 5.1 1.5 22.7 6.4 2.0 27.4 7.7 2.5 32.1 9.1 3.0 36.8 10.4 The radial thickness T of the copper band at the bottom of the groove 12 is 2 mm, In one example with a wheel member, if a wire of diameter 1.4 mm is extruded at a speed of 150 m/s at the rotational speed of said wheel member, then by means of cooling water flowing at a low speed such as 4/min. Heat is extracted in the cooling zone from the 10kW speed wheel member and the abutment member, and approximately the surface to be cooled in the cooling zone is
Provides a jet velocity of 800m/min.

This heat transfer rate results in a cooling zone with a heat transfer rate of approximately 2.3 kW as a result of being conducted through the heat transfer band.
As a result of the conduction of heat caused by the temperature gradient existing between the extrusion zone and the cooling zone through the parts of the adjacent wheel members and the abutment elements, approximately
The cooling zone was reached with a heat transfer rate of 2.3kW.

This measured extraction rate of heat by the cooling water flowing in the cooling zone is approximately 1.9 kW, which was obtained in a conventional manner by flowing the cooling water through internal cooling passages formed in the abutment member. This shows a very good contrast with the maximum heat conductivity of .

FIG. 6 is a graph showing that the rate of heat transfer from the wheel members and abutment members in the cooling zone varies as the flow rate of cooling water supplied to the zone changes.

The extruder described above with reference to the accompanying figures was actually tested using the copper heat transfer band described above, which band is shown at 74 in FIG. 10 and for convenience shown in broken lines in FIG. (It will be seen that FIG. 2 also shows a cross-section taken along line - of FIG. 10, where the copper band 74 is shown in solid lines). As shown at 74 in FIG. 2, the copper band has a U-shaped radial cross-section and extends partway through the rounded bottom 16 of the circumferential groove 12 and the parallel side walls of the groove.

FIG. 7 is similar to FIG. 2 and shows the wheel member 10.
A modified example will be shown. In this embodiment, a solid annular band 76 made of copper having a generally rectangular radial cross section is attached and tightened between cooperating steel cheek members 78 of said wheel members, thereby carrying said cheek members. When the drive shaft is driven by the drive motor, it is driven by the cheek member. The band 76, at least initially, has a small internal groove 76A that spans the tight joint between the two cheek members 78. This groove prevents any metal of the band 76 from getting between these cheek members during assembly of the wheel member 10. The band is attached to a complementary truncated conical surface 7 on each of the cheek members.
6B and 78B facilitate assembly and disassembly of these parts of wheel member 10.

A circumferential groove 12 extends around the pivot pin 26 of the rotary wheel member 10 toward the periphery of the shoe member 24 .
is formed into a copper band by rotating the copper band, thereby bringing the tip of the abutting member 36 into contact with the copper band, thereby gradually deepening the copper band to form the groove 12 therein. do.

FIG. 8 is a variation of that of FIG. 7, in which the thermally conductive band includes a composite annular band 80 with an inner core 82 of a metal (such as copper) having good thermal properties. , surrounded by a sheath 84 of the same metal (such as zinc) that is extruded by the machine, in good thermal relationship with this metal.

FIG. 9 shows another variation of the variant embodiment of FIG. 7, in which the thermally conductive band comprises a composite band 86, the radially inner annular part 88 of which has good thermal properties. a radially outer annular part 90 of the same metal (such as copper) and extruded by this machine;
surrounded by a good thermal relationship.

Metals that can be extruded by the extruder as described above are copper and its alloys, aluminum and its alloys, zinc, silver and gold.

[Brief explanation of drawings]

FIG. 1 is a mid-level vertical section taken through the essential working part of the device;
2 is a cross-sectional view taken along the line - in FIG. 5 is a schematic block diagram of a device embodying the devices of FIGS. 1 and 2; FIG. 6 is a schematic block diagram of a device embodying the devices of FIGS. 1 and 2; FIG. Graphs showing changes in heat transfer coefficient with changes in cooling water flow rate obtained from tests on one device according to the present invention, FIGS. 7 to 9, are similar to FIG. FIG. 10 is a view similar to FIG. 1 showing a modification of the apparatus shown in FIGS. 1 and 2. 10...Rotary wheel member, 12...Groove, 1
4...Side part, 16...Bottom surface, 18...Mouth part, 2
0, 22... truncated conical surface, 24... shoe member,
26...Swivel pin, 28...Stop member, 30...
Projecting member, 32, 34... Gap, 36... Contact member, 38... Contact support member, 40... Die block, 42... Extrusion die, 46... Inlet portion, 48... Arc-shaped passage, 50...Inflow passage, 52
...Hotsupa, 54...Front side, 56...Inner side, 5
8... Outflow hole, 60... Hole, 61... Extruded product, 62... Water pipe, 64... Nozzle, 65...
... Watering device, 66 ... Extrusion area, 68 ... Burr, 70 ... Teeth, 72 ... Inclined surface, 74 ... Copper band, 76 ... Annular band, 76A ... Inner groove,
76B...Truncated conical surface, 78...Cheek member, 78
A...Joint part, 78B...Truncated conical surface, 80...
Composite band, 82... Inner core material, 84... Sheath material, 86... Composite band, 88... Annular portion, 9
0...Annular portion, 100...System, 102...
...Device, 104...Sizing die, 106...
...Tension pulley device, 108...Storage device, 110...
...Coil winding machine, 112...Torque motor, 11
4...Control device, 116...First electrical signal, 11
8...Wire tension detection device, 120...Second electric signal, 122...Temperature detection device, 124...Function generator.

Claims (1)

Claims: 1. (a) a continuous extrusion apparatus 100 for producing a continuous metal extrusion product 102; (b) a continuous extrusion apparatus 100 through which the extrusion product passes and is drawn under tension from the extrusion apparatus; an extruded product processing device adapted to modify the shape, size or surface finish of said extruded product in a desired manner; , a tensioning device 106, 112 arranged to continuously draw the extruded product through the processing device; and (d) as the extruded product leaves the continuous extrusion device.
(e) a temperature sensing device 112 configured to sense the temperature of the extruded product and generate a temperature reference signal in accordance with the sensed temperature of the extruded product; (f) a tension sensing device 118 configured to sense tension and generate a tension feedback signal based on the sensed tension across the length of the extruded product; and (f) a tension sensing device 118 configured to control the tensioning device. , that is, the control is responsive to the temperature reference signal and the tension feedback signal, and the sensed tension in the length of the extruded product increases extrusion at the sensed temperature of the extruded product as it leaves the extrusion device. a control device 128 adapted to automatically control said tensioning device so as not to exceed a predetermined safety value less than the tension due to the yield stress of the product. 2. the controller comprising: (i) a function generator responsive to the temperature reference signal and responsive thereto to generate a tension reference signal representative of the tension due to yield stress on the extruded article at the sensed temperature; 12
(ii) responsive to the difference between the tension reference signal and the tension feedback signal, generating a control signal in response to the tension reference signal and the tension feedback signal to adjust the tension reference signal and the tension feedback signal; a comparator device 128 configured to control the tensioning device based on the difference from the signal;
A continuous extrusion device according to claim 1, comprising: 3. The tensioning device comprises an electrically energized torque motor, and the control device is arranged to vary the electrical energization of the torque motor. Continuous extrusion manufacturing equipment for metal products as described in 2. 4. A continuous extrusion device comprises: (a) a granular or powdered feed material entering a closed-ended passageway 48; and (b) frictionally moving through said passageway 48 towards the closed tip; c) and, at the closed end, a device for extruding from an orifice of an extrusion die 42 for producing the extruded product under high pressure and high temperature. A continuous extrusion manufacturing device for metal products according to item 1. 5 The continuous extrusion device includes a rotary wheel member 10 provided with a groove 12 around the periphery and driven by power.
and a show member 24 extending radially and circumferentially in the groove 12 to form an arcuate passageway 48 in the groove 12, the show member 24 extending from the outlet portion. a radially extending abutment member 36 protruding into the groove 12 for closing the groove 12 at the feed material inlet, and a granular or powdered metal feed material at the end of the passageway 48. The show member 24 also has a hopper 52 for feed material introduced towards the closed end of the passageway 48 and engages the surface of the groove 12 upon rotation of the rotary wheel member 10. The feed material being fed is rubbed by the continuous extruded metal product 10.
The continuous extrusion manufacturing apparatus for metal products according to any one of claims 1 to 4, further comprising an extrusion die having an orifice that is extruded at high temperature to produce metal products. 6. Continuous extrusion manufacturing of metal products according to claim 4 or 5, wherein the processing device has a drawing die 104 through which the extruded product is drawn, thereby changing the cross section of the extruded product. Device. 7. A method of processing a continuous metal extrusion product 102 delivered from a continuous extrusion device 100, comprising: (i) passing the extrusion product delivered from the extrusion device through an extrusion product processing device 104; (ii) Tension is continuously applied to the extruded product as it is delivered from the processing device, thereby drawing the extruded product through the processing device, and thereby causing tension between the extrusion device and the processing device. inducing tension in the length of the extruded product then extending; (iii) sensing the temperature of the extruded product as it leaves the extrusion apparatus and generating a temperature reference signal 120 in accordance with the sensed temperature; (iv) sensing tension in the length of the extruded product and generating a tension feedback signal 116 based on the sensed tension; and (v) sensing the tension across the length of the extruded product. the tension applied to the extruded product leaving the processing equipment such that the tension applied to the extruded product leaving the processing equipment does not exceed a predetermined safety value that is less than the product yield stress at the temperature detected as the extruded product leaves the extrusion equipment. A continuous extrusion manufacturing method for metal products that is automatically controlled by a temperature reference signal and the tension feedback signal. 8. said step (v) includes (vi) a predetermined value of said sensed temperature and a value of a safety tension induced within said length of said extruded product without exceeding the yield stress for said extruded product at the sensed temperature; The temperature reference signal 120 is converted into the tension reference signal 1 according to a predetermined function.
(vii) comparing the tension feedback signal 116 and the tension reference signal 126 and then generating a deviation signal by the deviation of the tension feedback signal 116 from the value determined by the tension reference signal 126; and (viii) controlling the tension applied to the extruded product delivered from the processing device by the deviation signal so as to prevent the sensed tension from exceeding the safe tension value. 7th
Continuous extrusion manufacturing method for metal products described in Section 1.