JPH022487Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention involves continuously extruding a long material made of various metal materials using an extrusion press, and also In a quenching device that rapidly cools a long material by spraying cooling water from a spray nozzle on a conveyance line, product cooling occurs due to unbalanced jetting or spraying of cooling water that is sprayed from the top, bottom, left and right directions toward the long material. This relates to something that prevents subsequent bending.

(Prior art) A quenching device that rapidly cools a long metal material (wire, bar) extruded by an extrusion press by jetting cooling water immediately after exiting the press is, needless to say, a well-known technology. Its structure is as follows. Borrowing from FIGS. 1 to 3 showing the embodiments of the present invention, the outline will be described. In FIGS. 1 and 2, 41 is not shown, but is an initial table (not shown) connected to the extrusion press. 42 is a run-out table (conveyance table) for transferring the long material that has been rapidly cooled by cooling water injection to the next process; 42 is also in the form of a roller table, and a quenching device 4 is installed between the two tables 41 and 42.
3 is installed, and a long metal material extruded into, for example, a round bar shape by an extrusion press is transferred through an initial table 41 into a quenching device 43 via a puller or the like. The treated long material is quenched by being sprayed with cooling water at the device 43, and is transported to the next process via the run-out table 42. As shown in FIGS. 1 and 2, the quenching device 43 is composed of a support roller 1 and a spray nozzle 2, which are disposed over the entire length of the device. As shown in FIG. 3, a plurality of supporting rollers 1 are rotatably arranged in rows at regular pitch intervals and perpendicular to the elongated material 10 over the entire length of the device. Initial table 4
The long material 1 is pulled by a puller or the like by supporting the bottom of the circumferential surface of the long material 10 sent out from 1.
0 is transferred to the runout table 42 side. On the other hand, spray nozzle 2 for quenching
As shown in FIGS. 1, 2, and 3, a large number of rollers are mounted in the vertical and horizontal directions surrounding the long material 10 that moves while being supported on the bottom side of the peripheral surface over the first group of supporting rollers. 2 groups of spray nozzles,
0 along the longitudinal direction. That is, as is clear from Fig. 3, in the vertical direction there are 2
A large number of spray nozzles 2 are arranged at required intervals, one row each in the left and right direction, and are arranged in axially symmetrical positions toward the center of the long material 10. The supply pipe 44 is provided in a protruding manner, and the pipe 44 is connected to the support roller 1 mentioned above.
It is held by a support frame that is integrated with the roller stand. Therefore, while the elongated material 10 leaving the extrusion press passes through the initial table 41 and moves over the support roller 1 while the bottom of its peripheral surface is supported,
The cooling water is injected from each group of two spray nozzles toward the entire circumferential surface, and the cooling water is rapidly cooled, and then transferred to the runout table 42 side.

(Problems to be Solved by the Invention) In the prior art, as mentioned above, the first group of support rollers and the second group of spray nozzles are both fixedly installed on an integrated roller mount or frame in the device, and the nozzle position is On the other hand, since the height of the support roller remains constant, if the size of the long material 10 (in the illustrated example, the diameter of the long material 10, which is a round bar material) changes in size, the initial table 41 connected to the extrusion press As shown in Fig. 1, the table itself is vertically adjustable by the height adjustment mechanism 4, so the entire table 41 can be raised or lowered depending on the size. 43, if the height of the support roller 1 is adjusted accordingly in order to support the bottom of the peripheral surface of the elongated material 10 whose size has changed, the position of the spray nozzle 2 is simultaneously changed integrally, and the elongated material The position of the spray nozzle group, which was previously set in an axially symmetrical position toward the center position of the long material 10, deviates, and as a result, unbalanced cooling of the circumferential surface of the long material 10, that is, partial cooling occurs, and the rapidly cooled long material 10 Large bending deformations occur after the material has completely cooled (air cooled). In order to avoid this partial cooling, when the height of the quenching device 43 is adjusted so that the center of axial symmetry of the spray nozzle 2 coincides with the center of the long material 10, the position of the support roller 1 changes, Unable to support the weight of the long material, the long material 10 falls onto the front and rear tables 41, 42, and the center of axial symmetry of the arrow spray nozzle and the center of the long material do not match. Therefore, partial cooling will occur.

(Means for Solving the Problems) In order to solve the problem of partial cooling of long materials in the above-mentioned quenching device, the present invention aims to adjust the height of the support roller and the quenching temperature according to the size of the long materials. By adjusting the centering means that can be opened and closed to hold the long material being cut in the horizontal center,
The axial symmetry center of the spray nozzle and the center of the long material are always aligned to prevent bending and deformation of the long material after cooling, which is caused by unbalanced spraying of cooling water. is a large number of quenching sprays that surround the long material moving out of the extrusion press and are arranged in rows in the vertical and horizontal directions along its length, and in axially symmetrical positions toward the center of the long material. a nozzle group, and a plurality of support rollers that support the bottom of the peripheral surface of the elongated material in the length direction thereof and are arranged and arranged in a row so as to be vertically movable independently of the spray nozzle group; A pair of guide rollers, which are placed opposite each other in front and behind the quenching zone formed by the spray nozzle and the support roller, and which face each other with their roller surfaces facing the circumferential surface of the long material, move the cylinder toward the circumferential surface of the long material. It consists of a centering guide that can be opened and closed by a link mechanism that serves as a driving source.

(Function) According to the technical means of the present invention, as shown in Figs. Support rollers 1 are arranged on a pedestal 5 at a predetermined interval below, and the roller pedestal 5 is mounted on a device pedestal 8 fixed to the installation floor so that it can be raised and lowered in the vertical direction via height adjustment mechanisms 4, 4. The spray nozzle 2 that sprays cooling water onto the long material 10 on the support roller 1 is installed so that all of the support rollers 1 can be adjusted to any height by raising and lowering the roller mount 5. , as shown in FIG. 3, are arranged in the vertical and horizontal directions surrounding the elongated material 10, and at axially symmetrical positions toward the center of the elongated material. That is, cooling water supply pipes 44, 44 are fixedly installed horizontally (left and right) concentrically with the center of the long material 10 to frames 11, 11 that are fixedly erected on both sides of the device mount 8 in the longitudinal direction. Two groups of spray nozzles are arranged in a row facing each other at predetermined intervals over the entire length of the pipes 44, 44, and in a vertical direction (vertical direction) perpendicular to the center of the long material 10.
There are two cooling water supply pipes 4 on both the upper and lower sides.
4, 44, 44, 44, the upper pipe 44 is integrated with the frame 11, and is a device cover 3 which can be opened and closed via a pin shaft 12 on one side of the frame 11 in order to pass through a puller that pulls the long material 10. held on the side,
The lower pipe 44 is held in a water jacket 6 for discharging cooling water, which is integrally provided on the side of the equipment stand 8 supporting the frames 11, 11, and these upper and lower cooling water supply pipes 44, 44, 44 , 44 at predetermined intervals over the entire length of the spray nozzles 2, 2, 44.
Two groups of spray nozzles are arranged in a row facing each other, and therefore, the cooling water injection position of all of the two groups of spray nozzles is fixed and unchangeable as shown in the third figure. Furthermore, in the present invention, an initial table 41 is provided before and after the quenching zone formed by the above-mentioned height-adjustable support roller 1 and fixed spray nozzle 2.
at the exit of the runout table 42 and the entrance of the runout table 42,
A pair of left and right guide rollers 13, 13 are disposed opposite to each other with the center of the extrusion press (which is concentric with the center of the long material 10 to be extruded) sandwiched between the two guide rollers 13, 1.
By arranging centering guides 9, 9 which are provided so as to be able to open and close synchronously toward the center of the press (the center of the long material), the long material 1 can be moved as follows.
Even if the size of the long material 10 changes from large to small, the center of the long material 10 and the center of the spray nozzle 2 can always be aligned, and it is possible to eliminate partial cooling during rapid cooling treatment by jetting cooling water. That is, the elongated material 10 extruded from the extrusion press is pulled by a puller or the like, and is moved through the initial table 41 to the quenching device 43 and runout table 42, and the elongated material 10 is drawn from the two groups of spray nozzles in the quenching device 43. The operation of rapidly cooling the long material 10 by jetting cooling water is the same as in the prior art, but in the present invention, the process is axially symmetrical with respect to the center of the long material 10 to be extruded (the center of the extrusion press). Two groups of spray nozzles arranged in vertical and horizontal directions are fixed and immovable, whereas a first group of support rollers that support the bottom of the circumferential surface of the long material 10 are
Roller stand 5 that can be raised and lowered by height adjustment mechanism 4
The height of the long material 10 can be adjusted freely by attaching it to the roller, so that when the size of the long material 10 changes, the long material 10 can be constantly sprayed by changing the height position of the first group of supporting rollers as appropriate. This means that alignment with the center of the two groups of nozzles can be easily and reliably performed. Furthermore, before and after the quenching zone,
Since centering guides 9, 9 are installed that can always hold the center of the long material 10 in the horizontal direction (left and right direction) correctly with the press center, the centering guides 9, 9 are located on the left and right sides of the press center and are oriented toward the press center. A pair of guide rollers 13, 1 that can be opened and closed freely
3, by supporting both sides of the peripheral surface of the elongated material 10 with the roller surface, the elongated material 10 during the quenching operation by the cooling water injection can be always centered at the center of the press, and Even when the size of the long material 10 changes, by adjusting the opening/closing angles of both guide rollers 13, 13, it is possible to reliably maintain both sides of the circumferential surface of the material. Regardless of the size of the length material 10, uniform quench content can be obtained from the entire circumferential surface, eliminating the occurrence of partial cooling. 11, FIG. 12A, and FIG. 12B illustrate the bending deformation caused by partial cooling of such a long material 10. As shown in FIG. When the center O ₂ of the elongated material 10 whose circumferential bottom is supported at the bottom of the elongated material 1 and the center O ₁ of the spray nozzle 2 are eccentric as shown in the figure, rapid cooling is performed by spraying cooling water from the spray nozzle 2. As shown in the appendix, in the longitudinal direction of the elongated material 10, there is an unbalance between high-temperature areas due to insufficient cooling and low-temperature areas due to excessive cooling. In the figure, W is the weight of the elongated material applied to the support roller 1. Therefore, as is known, during quenching, if the self-weight is ignored, the shrinkage deformation occurs as shown in the upper diagram of the same figure, as shown in Figure 12A, and when the self-weight is taken into account, the shrinkage deformation occurs as shown in the lower diagram of the same figure. As a result, after quenching and cooling in the atmosphere, bending as shown in Figure 12B occurs. This is the case when considering the own weight, and the occurrence of such bending deformation is a major problem in handling the product after the fact. On the other hand, according to the present invention, in order to always ensure that the center of the long material and the center of the spray nozzle are aligned as described above, the horizontal center is held by the centering guides 9, 9, and as shown in FIG. As shown in C, it is possible to easily obtain a product that does not undergo bending deformation. Also, the guide rollers 13, 13
Since the roller surface also contacts and supports the circumferential side of the elongated material 10, the elongated material 10 is smoothly conveyed in the longitudinal direction by the rolling of the guide rollers 13, 13.

Furthermore, since both guide rollers 13, 13 are opened and closed via a link mechanism by the operation of the cylinder 34, even during centering, they can be flexibly opened and closed to some extent in response to the force received from the long material 10. Demonstrate function. Furthermore, since the opening and closing method is performed using a link mechanism, it is easy to obtain a large force during centering.

(Embodiment) One specific embodiment of the device of the present invention will be described with reference to FIGS. 1 to 10.

In FIGS. 1, 2, and 3, the initial table 41 and the run-out table 42 are both of the roller table type, and the initial table 41 is mounted on a fixed pedestal 45 using, for example, an elevating cylinder mechanism or the like. It is installed vertically freely via the adjustment mechanism 4, and the runout table 42 is fixed. The device pedestal 8 installed between both tables 41 and 42 is fixed on the floor surface of the device, and the height is determined by, for example, lifting cylinders 14, piston rods 14a, etc. arranged on both sides of the pedestal 8 in the longitudinal direction. A roll mount 5 is supported vertically via an adjustment mechanism 4. As shown in the third diagram, the roll stand 5 is a stand with a gutter-shaped cross section, and includes a bottom wall 5a and both side walls 5b, 5b erected on both sides of the bottom wall 5a in the longitudinal direction.
A support roller 1 is freely rotatably installed between the side walls 5b, 5b at a predetermined interval via supports of shafts 1a, 1a. A cooling water discharge pipe 15 is provided in the center of the bottom wall 5a, and is in communication with a water jacket 6 for drainage provided on the apparatus pedestal 8 side. Frames 11, 11 are fixedly erected on both sides of the device mount 8 in the longitudinal direction, and cooling water supply pipes 44, 44 are installed parallel to each other along the longitudinal direction of the device at the upper ends of the frames 11, 11. A large number of spray nozzles 2, 2 are arranged in rows at regular intervals in both pipes 44, 44 at axially symmetrical positions toward the extrusion center (the center of the elongated material 10), so that the elongated material can be sprayed. Cooling water is injected onto both sides of the circumferential surface of 10. In FIG. 3, an upper cover 3 that covers the upper surface of the apparatus in an openable and closable manner is pivotally supported on a pin shaft 12 provided on a frame 11 on the right side of the figure. , two cooling water supply pipes 44, 44, 44, 44 are installed in a fixed manner. A large number of two groups of spray nozzles are arranged at regular intervals in symmetrical positions, thereby spraying cooling water above and below the circumferential surface of the elongated material 10. The reason why the upper cover 3 is opened and closed is to open it as shown by the chain line in FIG. In this case, the opening/closing cylinder 7 is used, and the piston rod 7a of the cylinder 7 is connected to the link 16 of the upper cover 3 which is pivotally supported on the pin shaft 12.
This is done by connecting to.
In the figure, 17 and 17 indicate when the roller frame 5 moves up and down,
In order to guide the shaft 1a of the support roller 1, the frame 1
The guide notches provided on the 1 and 11 sides are shown. In the embodiment, the structure of the centering guide 9 including a pair of openable and closable guide rollers 13, 13 disposed at the exit of the initial table 41 and the entrance of the runout table 42 is as shown in FIGS. 4 to 10. adopt. That is, Figures 4 to 7
In the figure (in the example, the guide 9 on the table 41 side
I will explain about the guide 9 on the table 42 side.
The same is true). frame 18 of table 41,
Attachment beams 19, 1 installed orthogonally across 18
A U-shaped guide body 20 consisting of both side walls 20a, 20a and a bottom wall 20b is placed between the guide bodies 2 and 9.
0 is attached to the lower surface of the mounting beams 19, 19, and an insertion portion 2 protruding from the outer surface of both side walls 20a, 20a of the main body 20 is attached to the clamping portions 22, 22 of the support frame 21, which are attached to the lower surfaces of the mounting beams 19, 19.
3 and 23 are slidably inserted and supported, and the holding parts 22 and 22 are inserted into the parts 23 and 23.
Both side walls 20a, 20 in the direction perpendicular to the supporting part by
A screw shaft 25 is attached to a protrusion 24 provided over one end of a.
By rotatably connecting and fixing one end and screwing the screw shaft 25 into a screw seat 26 provided on the support frame 21 side, the insertion portion 23,
By moving the guide body 23 within the clamping parts 22, 22, the guide body 20 can be adjusted in a direction orthogonal to the frames 18, 18 in FIGS. 4 and 6. This is an adjustment mechanism for aligning the center of the guide body 20 with the center of the extrusion press.
shows the fixing lock nut after adjustment. Both side walls 20a, 20a in the guide main body 20
A partition wall 28 is provided between the center portions of the upper end as shown in FIG. Pin shafts 29, 29 are rotatably inserted through the pin shafts 29, 29, and the pair of guide rollers 13, 13 described above are rotatably held in each shaft portion 30 via bearings 31. One end of each of the rotating arms 32, 32 is fixed, and the arms 32, 32
Links 33, 33 are provided protruding from one end facing outward from each other (see FIG. 10).

A driving cylinder 34 is installed on the bottom wall 20b of the guide body 20, and a piston rod 34a of the cylinder 34 is made to protrude between the side walls 20a, 20a so as to be able to rise and fall freely. The lower ends of a pair of left and right lift arms 37, 37 are pivoted to pin shafts 36, 36 provided at symmetrical positions, and the upper ends of the lift arms 37, 37 are connected to the above-mentioned rotating arms 32, 36.
A pin shaft 3 is attached to one end of each link 33, 33 of 32.
8 and 38 for pivotal connection. In addition, a stopper 39 is provided on the partition wall 28 provided at the center of the upper part of the side walls 20a, 20a to restrict the upper limit position of the elevator platform 35.
are provided, and synchronization interlocking gears 40, 40 are attached to one end of each of the pin shafts 29, 29 and mesh with each other. Therefore, according to the centering guides 9, 9, the main body 20 can be moved in the horizontal and horizontal directions so that the center of the guide main body 20 correctly coincides with the center of the extrusion press by rotating the screw shaft 25 in the forward and reverse directions. In addition to adjusting, as shown in Figure 4, the state of change is shown by solid lines and chain lines.
By raising and lowering the piston rod 34a of the drive cylinder 34, the lifting table 35 is moved up and down, thereby simultaneously displacing the pair of lift arms 37, 37 provided on both sides of the lifting table 35, thereby moving the links 33, 33. A pair of rotating arms 3 through
2 and 32 can be rotated to open and close toward the center of the press using the pin shafts 29 and 29 as fulcrums, and a pair of guide rollers 13 and 13 attached to the upper ends of the rotation arms 32 and 32 are interlocked for synchronization. gear 40,4
0, the opening/closing angle can be adjusted to any desired angle, thereby allowing the long material 10 to be held between the guide rollers 13, 13 regardless of the size of the long material 10. While keeping the center at the center of the press, both peripheral sides can be accurately supported and guided. Roller 1 indicated by the solid line position in the diagram
3 and 13 show the state in which the elongated material 10 of the maximum diameter size is connected and supported, and the opening angle of the rollers 13 and 13 is successively reduced by moving the lifting table 35, as shown by the chain line. Thus, the elongated material 10 of the minimum diameter size can be attached and supported. Two groups of spray nozzles installed in the fixed immovable position mentioned above, one group of support rollers that can be adjusted vertically with respect to the two groups and whose height is variable relative to the two groups of nozzles;
With the centering guides 9, 9, the center of the long material 10 always coincides with the center of the spray nozzle 2, regardless of the size of the long material 10, as explained in the operation section. Under stable and reliable support that does not deviate from the center of the press even in the left and right directions in the horizontal direction, cooling water is sprayed uniformly by the two groups of spray nozzles over the entire surface of the long material 10, preventing partial cooling. It is.

The vertical movement mechanism of the support roller 1 shown in the embodiment and the synchronous opening/closing movement mechanism of the pair of guide rollers 13, 13 in the centering guide 9 are as follows.
It is not limited to the illustrated example and can be freely designed.

(Effects of the invention) According to the invention, partial cooling in conventional quenching equipment can be reliably prevented, and even if the size of the long material changes, the center of the long material and the center of the spray nozzle can always be correctly matched. This is extremely advantageous in that uniform cooling content can be reliably and easily obtained.

In particular, in this invention, the height of the support roller can be adjusted with respect to the spray nozzle, and a centering guide is provided with a pair of guide rollers that can be opened and closed on the front and rear sides of the quenching zone. It is possible to always maintain a stable concentric position in the vertical and horizontal planes passing through the center of the press, and there is no eccentricity or movement of the long material.
This effectively suppresses bending deformation that occurs after the long material is rapidly cooled, and the required structure is also relatively simple, which is advantageous in that it can be easily installed in a conventional quenching device. In addition, since centering is performed by bringing the roller surfaces of the pair of guide rollers in the centering guide into contact with the long material, the long material can be moved smoothly in the longitudinal direction by the rolling of the guide rollers. Will not damage the material surface. Furthermore, since both guide rollers are opened and closed via a link mechanism by the operation of the cylinder, even during centering, it is possible to flexibly respond to the force received from the long material. can demonstrate. Therefore, when the elongated material moves within the quenching device, it is advantageous for efficient centering, and also from this point of view, damage to the elongated material can be prevented.
In addition, since it is opened and closed by a link mechanism,
This has the advantage that it is easy to obtain a large force during centering.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of an embodiment of the device of the present invention;
The figure is a plan view of the same, and Figure 3 is an enlarged side sectional view of the main parts.
Fig. 4 is a longitudinal sectional front view of the embodiment of the centering guide, Fig. 5 is a side view of the same, Fig. 6 is a top view of the same, and Fig. 7 is a longitudinal sectional view of the embodiment of the centering guide.
The figure is a bottom view in the direction of arrow A in Figure 5, and Figure 8 is a bottom view in the direction of arrow A in Figure 4.
Detailed view of the section, Figure 9 is a sectional view taken along line C-C in Figure 4,
Figure 10 is a sectional view taken along line D-D, Figures 11 and 12.
Figures A, 12B, and 12C are explanatory diagrams of cooling and bending deformation depending on the relationship between the extruded elongated material and the nozzle center. 1...Support roller, 2...Spray nozzle, 3
... Upper cover, 4 ... Height adjustment mechanism, 5 ... Roller stand, 8 ... Device stand, 9 ... Centering guide, 10 ... Long material, 13 ... Guide roller.

Claims (1)

[Scope of utility model registration request] A quenching device that rapidly cools a long metal material exiting an extrusion press by spraying cooling water from a group of spray nozzles, surrounding the moving long material in the vertical and horizontal directions over its length, and A large number of spray nozzle groups for quenching are arranged and arranged in an axially symmetrical position toward the center of the long material; A plurality of supporting rollers arranged in a row so as to be vertically movable independently of the spray nozzle group and supporting rollers are disposed opposite to each other in front and rear of the quenching zone formed by the spray nozzle group and the supporting rollers, and the roller surface is arranged around the circumference of the elongated material. A long metal material comprising: a pair of guide rollers facing each other, and a centering guide provided facing the peripheral surface of the long material so as to be openable and closable by a link mechanism using a cylinder as a drive source. quenching device.