JPH02501720A - Continuous extrusion molding equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Continuous extrusion molding equipment technical field The present invention is a rotatable wheel with grooves on the surrounding surface, an arcuate working path. A shoe (sheath-like member) surrounding the defined arc of the groove is closed, and an extruded area is formed upstream of the groove. It is supported by an abacus that protrudes from the shoe into the groove to form a The metal feed material is then extruded from the extrusion area and removed from the work channel and shoe. A bar of gold containing an extrusion defining an orifice (hole) for exiting the Continuous extrusion apparatus for extruding genus feed materials.

Background technology In the industry, this kind of equipment is referred to as "conform 1confor + i) J machine". It is publicly known. One such machine is British Patent Specification No. 1.506.845 ( British Atomic Energy Authority, London).

From that specification, when the wheel rotates to convey the rod-shaped feed material together, the groove and the shoe fits snugly against the rod-shaped feed material being fed to the entrance of the channel. The dimensions are such that the rod can move against the inner surface of the fixed shoe. It will be appreciated that this is hindered by slippage. The specification also includes (a) When extruding the copper feed material to strengthen the frictional interlock between the roll and the feed material In some cases, for example, lining the wheel with a copper coating can Desirable when comparing copper feedstocks. and (b) for the movement of the feed material. The desired frictional resistance of the fixed shoe is that the roller reduced by providing

British Patent Specification G B 2,069,389 (B, I, C, C) and European Patent Specification Patent Specification EP O, 071,490 (Babcock Wire Equip Mento Co., Ltd., Babcock wire equipment L TD ) is also smaller than the wheel groove, so the feed material tire (wheel metal) or tire The tires are carried along with the tire tread until after they have passed the abutment. Forces particularly granular feed material to the extrusion die while remaining attached to the groove surface It teaches you how to use abutments to help you.

This latter prior art suggests that the passage should be filled as quickly as possible, but the consequences As a result, a lot of energy is used to overcome the frictional resistance between the feed material and the shoe. It teaches that it is necessary.

If we force the feed material into the cracks as it progresses along the path, In order to ensure that the metal tire that is trying to grip the feed material is ning and contoured to give an annular crack to the feed material. Feed material whose cross section is smaller than the channel can be used, so that the feed material and It is obvious that the frictional engagement with the fixed shoe is reduced and energy is saved. In order to maintain the previous shape of the 0th crack, it becomes the same shape as the 1st crack, and therefore, The outline of the crack is shaped by the abutment as the wheel rotates in contact with it. An abutment is provided that maintains the

Disclosure of the invention Thus, according to the invention, the lining of the groove has at its bottom a complement of width narrower than the main groove. It incorporates a support groove.

A thin metal rod, narrower in width than the main groove, is pushed into the auxiliary groove, causing that the abutment can be pushed into the exit area and that the abutment The main groove and the auxiliary groove are shaped to maintain their shape when the wheel is rotating. Continuous extrusion apparatus of the type having a wheel, characterized in that the wheel a shoe enclosing part of the circumference of a wheel, a wheel having a circumferential groove in it, a groove It covers the arc of the wheel, enters the groove of the wheel, and terminates in the blocking abutment. shoe, so that both the metal feed material Φ rod and the avatar are extrusion adjacent to the material from which the rod of feed material is pushed through the ties Shoes and wheels that define a working path for pushing towards the area Grasp the feed material rod firmly and push the adhesive metal lining forward. A wheel groove (referred to as the "main groove" in Dinghai) is provided.

According to one preferred feature of the invention, a lamp supported on a shoe (camber) protrudes into the main groove at a location upstream and adjacent to the extrusion area, and the feed material rod Due to the large friction with the surface defining the auxiliary groove as it is forced into the extrusion area. It is arranged so that it can be forced into a linked state.

The cross-sectional shape of the auxiliary groove is such that the auxiliary groove is fed into the groove and pushed along it. It is preferred that the feed material closely fit the shape of the selected narrow feed material.

In one preferred arrangement, the thin feed material rod is of circular cross-section and At least a portion of the auxiliary groove and the auxiliary groove have a semicircular cross section.

The auxiliary grooves are at least partially parallel and can tighten the selected narrow feed material rod. It may also have opposing sidewalls for receiving. Instead, the auxiliary groove , at least in part converges radially inward, thereby making the selected thin feed material When the material rod is pushed towards the extrusion area, it cannot be pushed into the auxiliary groove. It would have opposing sidewalls.

The selected slender feed material rod has a radial dimension greater than its lateral dimension. will.

Conventional tooling (i.e. abutment and shoe contacting feed material) part), the grooves and shoes of the wheel fit snugly into the feed material and make contact. , compared to conventional devices that ensure that The benefits include: 1. Frictional resistance of the shoe to the movement of the feed rod. , a substantial reduction in the energy that would otherwise be lost in overcoming friction.

2. Feed materials of various cross-sections adapt different abutments to groove lining By simply utilizing the contours and limitations of one shoe and main groove to They can be used together without any restrictions. This means that each bar of feed material A shoe that defines a dedicated part (or wheel) in one specific shape and its assembly. The need for many different pairs of mated main grooves and to hold them No cost required.

3. The extrusion load and the temperature rising during operation will change the rotation speed of the wheel. By changing the supply proportion of the input volume, i.e., different cross sections can be controlled by feeding rods of feed material.

4. Various high-strength alloy feedstocks that were previously extremely difficult to extrude. You can push the stick out. and 5. The force per unit area of the abutment is reduced, thus reducing the reliability and reliability of the instrumentation. and service life are improved.

Other features of the invention may be found in the description that follows and in the patents attached at the end of this description. It will be clear from reading the claims.

One embodiment of the invention is described herein by way of example and with reference to the accompanying schematic drawings. It will be.

Brief description of the drawing Figure 1 shows a known conform for extruding a rod of feed material. This is a drawing seen from the end of the machine: Figure 2 is a cross section taken from the vertical cross section taken along line n-n in Figure 1. It is a front view; FIG. 3 is a cross-sectional view taken from the horizontal section taken along line mm in FIG. 2; FIG. 4 shows a modified conforming machine according to the invention, with access to the machining path of the machine. FIG. It is an enlarged cross-sectional view seen from the inclined plane V-V in the figure; 4 except that FIG. 6 shows an alternative extruded feedstock rod. Figure 7 is an enlarged cross-sectional view taken from the slope ■-■ in Figure 6. Ru; Figure 8 is an enlarged cross-sectional view of Figure 6 seen from the horizontal plane ■-■: Figure 9 shows the practical form of one of the machines shown in Figures 4 and 6; and a partial sectional view similar to FIG. 6; and FIG. 10 is a perspective view of the abutment installed in the machine of FIG. 9;

METHODS OF CARRYING OUT THE INVENTION Now, with reference to the drawing, a conventional method for extruding feed material in the form of a solid metal rod 1 The mold conforming machine rotates on a shaft 3 supported by bearings (not shown). It includes a wheel 2 which is supported to move the vehicle. Shoe 4 is a fixing member (not shown) , which tightly surrounds the circumferential arc of the wheel 2. wheel The annular groove 5 in the periphery of the shoe and the inner surface 6 of the shoe ensure that the cross-section of the rod 1 of feed material is Define a suitable work path. The abutment part 7 of the shoe is shown in Figure 2 and and projecting from the shoe into the groove 5, as shown in FIG. It supports an abutment 8 whose end is blocked (closed). The insertion die 9 is located on the inner surface of the shoe that is close to the upstream side of the abutment 8, and The feed metal 11 emerging (extruded) from the orifice is substantially radially It exits the shoe 4 through the opposite outlet passage lO.

In FIG. 2, a rod of feed material l is inserted into the groove 5 of the wheel and the inner surface 6 of the shoe. It can be seen that it closely matches the path of this prior art, which is defined as .

The inner surface 6 of this shoe is designed to press the rod l firmly against the wheel. so that it is tightly coupled by the frictional force with the groove 5 of the wheel. The wheel therefore pushes the feed metal into the die 9. Apply sufficient force to create the necessary extrusion pressure to force it through the ejection orifice. With this, it is pushed into the abutment 8. In this arrangement, the inner surface 6 of the shoe There is a considerable sliding frictional resistance between L and the rod of feed material L. Moreover, Fig. 1 - The device of Figure 3 is dedicated to the processing of only one specific cross-section of the feed bar. .

FIG. 4 shows the same equipment as FIGS. 1-3, so similar parts in FIG. The parts are marked with the reference numbers given to the corresponding parts in the previous figures, namely Wheel 2: Axis 3: Shoe 4: Abutment part 7; Gui 9: and exit passage 10 shown .

However, in Figures 4 and 5, the wheel has adhesive in its groove (main groove). annular metal lining or received in an annular crack or its auxiliary groove; An auxiliary groove 13 is formed with a cross-sectional shape that matches the shape of the thin feed material rod IA to be processed. A tire 12 (of the same metal as the feed material rod to be used) is provided. As you can see, there have been some changes.

Therefore, the machining paths of the machine are respectively the radially facing surfaces of the shoes 4 and and the laterally opposed annular sides of the wheel groove lining 12 and the wheel groove. It is formed by a wall.

The rod of feed material is substantially less than the lateral distance between opposite sides of the wheel groove. Since it is narrow, the rod of feed material is defined by the inner surface 14 of the shoe and the contour 15 of the groove. Therefore, when located in the auxiliary groove 13, the supply The bar of material has no contact with the sidewall of the wheel or the inner surface of the shoe.

In addition, a ramp 16 is added to the inner surface 14 of the shoe and radially inwardly It protrudes toward the auxiliary groove 13.

Figure 4 shows the feed material rod IA at an early stage during its introduction into the work channel; At the floor, the rod hits the inner surface 14 of the shoe and the leading end and the shaft are in friction. against the lining 12 with the subsequent part rubbing against the inlet frame 4A of the It is approximately tangential. At the point of contact between the rod IA and the groove lining 12 Friction forces the rod along the path and bends the rod to follow the shape of the two paths, and , settle into the cracks 13 in the lining 12. By that, bar IA The applied frictional force increases and advances the rod into the extrusion zone 30 upstream of the abutment. let In this preliminary state, the shoe's frictional resistance to the rod's movement is the second It should be noted that this is much less than the corresponding case of the prior art embodiment of FIG. It is.

Figure 6 shows that the feed material rod IA has passed the ramp 16 and is adjacent to the abutment 17. It advances to the adjacent extrusion zone 30 and is extruded through the orifice in the gou 9. 4 shows the apparatus of FIG. The lamp is strong with the rod IA firmly cracked 13 forcing the rod IA into the frictional interlock, thereby pushing the die 9 into the wheel. Apply an extrusion pressure high enough to extrude the metal of the rod through the ejection orifice. It is directed to exert a force sufficient to cause the discharge zone 30 to occur.

If the rod is a soft metal such as annealed copper, The circular rod IA shown in FIG. Brass, aluminum alloy or steel Hard metals retain their initial circular cross-section and are easily pushed deep into cracks. Dew.

While only one lamp 16 is shown, the other lamps are located at other upstream positions. The lamp will be integrated into the shoe at the location: if desired, the lamp will require its presence. If it is not deemed essential, it will be omitted.

After passing ramp 16, the bar hits abutment 17 and is adjacent to the tie. The thickness increases gradually until the extrusion cavity 30 is filled. Subsequent supply to that cavity The continuous entry of the rod of material pushes the metal of the feed material through the orifice of the tie. Generates the necessary extrusion pressure to extrude.

Now, referring to FIG. 8, the abutment 17, groove lining 12 and shoe The extrusion cavity defined by the surface 14/die 9 of the feedstock metal IA It will be seen that the feed metal IA is completely filled by The continuous line showing the separation from the metal 12 of the lining at the boundary of the crack 13 is , since those metals will be united at this part of the extrusion boundary, the total It is very conceptual. However, the shape of the line is clearly shown in Figure 1O. This serves to show the shape of the abutment.

The shape of the abutment means that the abutment obstructs the passage and is pushed with its front part. Not only does it increase the dispensing pressure, it also forces subsequent feed rods into the machining channel entrance. is important because it reproduces the shape of the cracks in the lining that are easily accepted in .

The abutment 17 has a separate part for incorporation into the abutment part 7 of the shoe. Made as blocks. Therefore, when worn or with a significantly different cross section (e.g. For example, when a square cross section is used, it can be replaced.

Since the die block 9 can also be replaced, extruded products with one type of cross section can be produced. can be easily manufactured (eg, large circular cross-sections, or square cross-sections).

If desired, changing the die orifice with respect to the feed material cross-section can be Can be used to change the brewing rate. Instead of this, the supply material The diameter can be changed without changing the apparatus in Figures 4-6 to change the extrusion rate. can do.

8-10, the arcuate annular portion 18 of the abutment is extruded. The liner has a cross-sectional shape similar to (preferably smaller than) that of the rod of feed material to be radius "r" such that it forms a fissure 13 in the ring 12, so that the fissure 13 provides the necessary friction for slip-free transport of the bar into the extrusion cavity 30 adjacent to the die 9. It is possible to provide an interlocking state by rubbing. Arcuate annular portion of the abutment 1 8 differs in the direction in which they are connected in order to the parallel sides 20 defining the abutment. It is connected to the side surface 19.

The intrusion part of the abutment (which protrudes beyond the inner surface of die 9 as shown in Figure 8) (defined as the area of the abutment surface where the rod is on the upstream side of die 9) feed material to ensure that it will fill the adjacent pressurized cavity with It is preferable to set a value close to the cross-sectional area of the rod IA.

If lamp 16 is not used, the gap between the surface of die 9 and the "top" of the crack is The distance (indicated by rxJ in Figure 8) is divided before the rod reaches the pressurized cavity. be pushed into the auxiliary groove formed by the groove 13, and therefore be properly gripped. determined to be sufficiently close to the feedstock rod diameter to ensure that It is preferable.

For each type of rod cross-section of the feed material used, it is of course a shoe Grooves of various widths are provided throughout and as otherwise required in prior art devices. Providing specific abutment cross-sections that are much cheaper than providing fixed wheels is desirable.

FIG. 9 shows the wheel 2, the lining 12, the shoe 4, the inner surface 14 and the lug therein. The pump 16 is an actuator which serves to force the rod onto the abutment as already described. The equipment used is shown. However, in this device, the shoe is attached to the thrust block 2. 1 and which not only supports the die 9 but also defines the ramp 16. The spacer 22 is adjacent to the die support block 23 that defines the die support block 23. die thrust tube The lock 21 controls the cooling that is sprayed onto the extruded product exiting the die through the passageway 10. It has a passage 25 for cooling water.

Also, adjust the intrusion part “x” of the abutment 17 so that it enters the lining 12. An abutment thrust block 24 is housed in the recess to allow There is.

A subsequent passageway 26 directs the cooling water across the surface of the abutment and tangentially to the tire 12. Pour towards the other side.

The apparatus of FIG. A variant of the device suitable for extruding granular feed materials such as If the present invention There is no need to change this arrangement if you wish to do so. But if you want If so, the adjustable wear plate 27 acts as an inlet frame so that the rod of feed material The shoe and hopper can be protected from wear when entering the work path. Wear. The movement of the plate 27 relative to the wheel increases the driving force applied to the rod. In order to increase the force acting on the rod at the contact points shown in Figure 4, the rod can be used to increase the length of the arc in contact with the rail lining 12. Ru.

As a non-limiting example, the apparatus of FIG. It is used to extrude from a rod of feed material in the range of . in a typical case is a rod of diameter 7 mm has an arcuate surface of radius 3 mm and 4.7! onm penetration value An abutment with an "x" was used to feed into the passageway. 2mm in diameter The wire was extruded. As will be readily understood from the foregoing description, this device has other Abutments of alternative dimensions are available for extruding cross sections from feed materials of various cross sections. can be provided.

Because of its metallurgical cleanliness, tires are manufactured using the same gold as the feedstock from which they are extruded. It is desirable that it can be made with genus. One method of making tire 12 is to hoist a metal tube. By rolling it into the groove of the eel and rolling it continuously, as shown in FIG. Expand the circular cross section of the concave corner of the groove to fill it as shown in Figures 7 and 8. The idea is to pressurize it to the extent that it does. However, an alternative way to create tires is , wire winding, metal plating, or split wheels and Including using pre-machined tires.

The shape of the cross-section of the auxiliary groove is determined by the shape of the cross section of the auxiliary groove. fits snugly into the narrow feed material rod that is inserted into the feed material, and strengthens the feed material rod that enters it. Preferably, the device is adapted to provide easy access.

When the thin feed material rod has a circular cross-section as in the above example, the auxiliary groove is Preferably, the cross section is at least partially semicircular.

Auxiliary grooves are spaced to accommodate selected feedstock rods in an interference fit. Such sidewall sections may have few opposing sidewall sections. and their auxiliary grooves may be partially parallel: or their auxiliary grooves may be at least partially parallel. converges radially inward, so that the selected narrow feed material rods are When pushed forward, it will be forced into the auxiliary groove.

If desired, the selected slender feed material rod can be It may have dimensions.

The bottom and sides of the auxiliary groove are located between the wheel and the feed material rod in the auxiliary groove. It may have any other profile oriented to provide strong frictional driving force. For example, the bottom of the auxiliary groove may be wave-shaped, sawtooth-shaped, or stepped across its width. Sometimes it is.

In the embodiment described above, the groove lining 12 is located on the wheel, except for a short distance. whereas in other embodiments it extends over each parallel side wall of the groove. The linings, if desired, can be fitted with recessed annular portions of their side walls (see Figure 5). , as shown by dotted line 32) above their side walls. It is growing up to.

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Claims (1)

[Claims] 1. Wheel (Fig. 2: 2) with a circumferential groove (5) and the circumference of the wheel (2) encloses a part of the groove (5), covers the arc of the groove (5), and enters the groove (5) of the wheel. and has a shoe (4) terminating in the obstructing abutment (8); The shoe (4) and the wheel (2) both accept a metal feed rod (1). adjacent to the abutment (8), the feed material rod (1) passes through the die (9). forming a working path for pushing towards the extrusion area to be extruded; The groove of the rod (hereinafter referred to as the "main groove") (5) grips the feed material rod (1) and pushes it. Continuous extrusion equipment of the kind with adhesive metal lining for advancing , the lining (12) of the groove has at its bottom an auxiliary groove narrower than the main groove (5). (13), and the auxiliary groove (13) has a small width narrower than the main groove (5). A metal feed rod (1A) is pushed into the extrusion zone (30). Further, when the wheel rotates, the abutment (17) It is characterized in that it is shaped to permanently maintain the shape of the groove and the auxiliary groove (5, 13). Continuous extrusion molding equipment. 2. A baffle plate (16) supported by a shoe (4) is provided in the extrusion area. (30) and protrudes into the main groove (5) at a position adjacent to the upstream side of the feed material rod (1A ) is forced into the extrusion zone (30), said thin feed material rod (1A ) is interlocked with the surface defining the auxiliary groove (13) through strong friction. 2. The device of claim 1, wherein: 3. The shape of the cross section of the auxiliary groove (13) is fed into the auxiliary groove (13) and Fits snugly into the shape of the selected slender feed material rod (1A) that is pushed along The apparatus according to claim 1 or 2. 4. The thin feed material rod (1A) is in the form of a circular cross section and the auxiliary groove (13) is at least partially semicircular in cross section. The device according to item 1. 5. The auxiliary grooves (13) are at least partially parallel and the selected narrow feed material 1A with opposing side wall portions that receive the material rod (1A) with an interference fit. 5. The device according to claim 3 or 4. 6. The auxiliary groove (13) at least partially converges radially inward, thereby A thin rod of feed material (1A) is forced towards the extrusion zone (30). The device according to claim 1 or 2, wherein the device is forced into the auxiliary groove (1A) when the device is pressed into the auxiliary groove (1A). 7. The selected slender feed material rod (1A) is radially larger than its lateral dimension. A device according to any one of the preceding claims, having dimensions of . 8. The abutment (17) has a surface adjacent to the side wall portion (1 9), the side wall portions being connected in turn to each parallel side wall (20) and having a Therefore, the corresponding arcuate side located on the radially outer side of the oriented surface The shape of the cross-section of the narrow feed material rod (1A) defining the auxiliary groove (13) with the surface 5. Device according to claim 4, having an arcuate surface (18) corresponding to . 9. (a) The wheel groove (5) is connected to a pair of spaced apart annular seals. into the annular sealing surface (34) and the groove (5). An annular ring with a width wider than the gap between the depth and the length of the abutment (17) (b) the abutment (17) comprises a sealing surface (36); one spaced apart for cooperating with the sealing surface (34) of the groove (5) of the having a pair of annular sealing surfaces (20) and sealing the abutment (17); a convex protrusion (18) of narrower width than said surface (20); A convex projection (18) extends into the surface (15) of the annular groove and The portion (19) is located within the annular sealing surface (34) of the groove (5) or the surface (36) of the groove. In order to connect the protrusion (18) to each sealing surface (20) in the plane of extending to each side of the shaped protrusion (18) and thus extending to said side surface (19). is located in the groove (5) deeper than the surface of the inlet of the die (9). Item 1. The device according to any one of the above items. 10. When the abutment (17) is used, it is placed on the sides of the surface in different directions. a replaceable abutment defining a cleft (13) with a convex surface located; connecting with the parallel sealing sides (20) to define the Convexity with an arcuate surface (18) supported by side walls (19) of different orientations 10. The device according to claim 9, comprising a shaped projection (18). 11. the abutment (17) towards the groove (5) of the wheel or Claim according to any one of the above claims, which can be adjusted in the direction opposite to the groove (5). equipment. 12. The feed material introduction plate (Figure 9: 27) guides the feed material rod (1A) into the passage. The introduction plate (27) is attached to the shoe (4) at the entrance to the work passage for can be adjusted towards or away from the groove (5) of the wheel. The device according to any one of the following items. 13. radially so that the groove lining (12) fills the wheel groove (5) including hoops of metal tubes or wrapped metal wires pushed into Claims in each of the above claims are machined to form an auxiliary groove (13) after the A device according to any one of the above. 14. Continuous extrusion according to any one of the preceding claims, comprising the steps of: Method of operation of the forming device: (a) the groove (5) of the wheel is (1A) is lined with a metal tire, and (b) is a hole deeper than the entrance into the die (9). Convex rings located on both sides along the annular side part that is in the groove of the ring. The annular crack groove (13) containing the auxiliary groove (forming the auxiliary groove) is inserted into the tire (12). forming around; and (c) The feed material rod (1A) has a smaller cross section than the passage. Forced into the fissure (13) and thereby up to the abutment (17) The rod is pushed out and placed in the work passage so that it is pushed out through the die (9). Tep. 15. The rod of feed material (1A) is inserted into the curvature (1A) protruding into the groove (5) of the wheel. 6) into the crack (13) at a location adjacent to the extrusion area (30). 15. The method of claim 14, including the step of pushing. 16. The groove (5) of the wheel has a gold ring around the annular bottom surface (36) of the groove (5). Wrap the metal pipe or wire, then push the wrapped metal pipe or wire into the 15. The liner is lined by radial compression to compress and harden. or the method described in 15. 17. The crevice is preferably pressed metal filling the groove (5) of the wheel. 17. A method according to claim 16, characterized in that it is machined to form a shape (13). 18. Although not expressly claimed in any of the foregoing patent claims, there are device containing any new and innovative combination of features. 19. Although not expressly claimed in any of the foregoing patent claims, there are A method involving any novel and novel combination of steps. 20. Substantially as described above with respect to Figures 4 to 10 of the accompanying schematic drawings. equipment as described and illustrated. 21. Substantially as described above with respect to Figures 4 to 10 of the accompanying schematic drawings. method as described and illustrated.