JP6479141B1 - Work hardening processing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To guide a workpiece heat-treated in a heat treatment furnace to a quenching chamber so as to be appropriately quenched. SOLUTION: A work W heated by a heat treatment furnace 10 is held on a work holding member 21 in a quenching chamber 20 sealed and continuous with the heat treatment furnace, and the work is pressed against the work holding member by a press means 30. In this state, the work holding member is lowered by the elevating means 40 and immersed in the cooling liquid x in the cooling liquid tank 50 below the quenching chamber, and interlocked with the rotating shaft 62 of the rotating device 60 provided outside the quenching chamber. The rotation transmission mechanism 70 that rotates is provided in the cooling liquid, and the work holding member is rotated by the rotation transmission mechanism, and the cooling liquid ejection pipe introduced into the through hole 212 provided in the central portion of the work holding member. Through 51, the coolant is quenched from the bottom of the work held on the work holding member. [Selection] Figure 7

Description

  The present invention introduces a workpiece heat-treated in a heat treatment furnace into a quenching chamber, holds the workpiece on a workpiece holding member provided in the quenching chamber, and presses the workpiece onto the workpiece holding member. In the pressed state, the work holding member is lowered by the lifting and lowering means, and the work held by the work holding member is immersed in a cooling liquid stored in a cooling liquid tank provided below the quenching chamber. The present invention relates to a workpiece quenching apparatus for quenching. In particular, a quenching chamber is provided so as to be continuous with a heat treatment furnace for heat-treating the workpiece, and the workpiece heated in the heat treatment furnace and introduced into the quenching chamber is held by the workpiece provided in the quenching chamber. In a state where the workpiece is held on the member, and the workpiece is pressed onto the workpiece holding member by the pressing means, the workpiece holding member is lowered by the lifting / lowering means, and the workpiece held by the workpiece holding member is lowered. The workpiece is immersed in a coolant stored in a coolant tank provided below the quenching chamber, and in this state, the workpiece holding member holding the workpiece is rotated by a rotating device (such as an electric motor), and the workpiece is cooled. It is characterized in that the workpiece can be sufficiently cooled by preventing the rotating device from being overheated when cooling the workpiece.

  Conventionally, after heat-treating a work in a heat treatment furnace, the work is taken out of the heat treatment furnace and guided to a quenching chamber, and held on a work holding member provided in the quenching chamber. In a state where the workpiece holding member is pressed onto the workpiece holding member, the workpiece holding member is lowered by the lifting and lowering means, and the workpiece held by the workpiece holding member is placed in the cooling liquid stored in the cooling liquid tank provided below the quenching chamber. It has been practiced to immerse the workpiece and harden it.

  Here, after the work is heat-treated in the heat treatment furnace as described above, when the work is taken out from the heat treatment furnace and guided to the quenching chamber, the work is heat-treated in the middle of guiding the work from the heat treatment furnace to the quenching chamber. There was a problem that the workpiece was deteriorated due to oxidation.

  For this reason, for example, as shown in Patent Document 1, a quenching chamber is provided so as to be continuous with a heat treatment furnace in a sealed state.

  And in what is shown by this patent document 1, the workpiece heat-processed in the heat processing furnace is hold | maintained to the lower mold | type for hardening provided in the hardening chamber provided continuously with the heat processing furnace, With the workpiece held in the mold pressed by the upper mold for quenching, it is immersed in the coolant stored in the coolant tank provided in the quenching chamber and quenched, and the workpiece thus quenched is cooled. The workpiece is lifted from the liquid, transferred to the lifter, and the lifter is lowered to immerse the workpiece in the coolant stored in the cooling bath of the quenching chamber, and then the workpiece is cooled in the cooling bath of the quenching chamber. The workpiece is guided into the cooling liquid in the cooling liquid tank of the take-out chamber that communicates with the workpiece, and then the work is raised from the cooling liquid in the cooling liquid tank of the take-out chamber, and the work that has been quenched from the take-out chamber So that take out.

  However, in the thing shown by patent document 1, since the workpiece | work heat-processed in the heat processing furnace is only moved and cooled in the cooling fluid accommodated in the cooling fluid tank in the said hardening chamber or taking-out chamber. In addition, there is a problem that it is difficult to uniformly cool the entire workpiece and that it takes time to sufficiently cool the workpiece.

  Conventionally, in Patent Document 2 and Patent Document 3, the ring-shaped workpiece heat-treated in the heat treatment furnace is held in the cooling liquid tank in the quenching chamber while being held by the lower surface holding member and the upper surface holding member. In the quenching treatment by immersing in the cooled liquid, the ring-shaped workpiece is held by the lower surface holding member and the upper surface holding member and immersed in the cooling liquid, and the rotating device provided in the quenching chamber. A ring-shaped workpiece is cooled by rotating them.

  However, in the above-described Patent Document 2 and Patent Document 3, as shown in Patent Document 1, a cooling liquid tank in which a cooling liquid is accommodated in a sealed state with a heat treatment furnace is provided. It is not shown that a quenching chamber is provided, and when the heat-treated workpiece is taken out of the heat treatment furnace and guided to the quenching chamber, the heat-treated workpiece is deteriorated by being oxidized as described above. There was a problem.

  Moreover, in what is shown by patent document 2 and patent document 3, as shown in patent document 1, when the quenching chamber is provided so that it may continue in the state sealed with the heat treatment furnace, the temperature of the quenching chamber is very high. However, the rotating device provided in the quenching chamber is immediately damaged, or the cost increases to increase the heat resistance of the rotating device. However, when a workpiece with a flat bottom surface is used, the coolant is not properly guided between the workpiece and the lower surface holding member. Further, there is a possibility that it is difficult to sufficiently cool the bottom surface side of the work.

Japanese Utility Model Publication No. 1-226759 Utility Model Registration No. 2576939 JP 2010-222619 A

  The present invention introduces a workpiece heat-treated in a heat treatment furnace into a quenching chamber, holds the workpiece on a workpiece holding member provided in the quenching chamber, and presses the workpiece onto the workpiece holding member. In the pressed state, the work holding member is lowered by the lifting and lowering means, and the work held by the work holding member is immersed in a cooling liquid stored in a cooling liquid tank provided below the quenching chamber. An object of the present invention is to solve the above-described various problems in the workpiece quenching apparatus for quenching.

  In the present invention, as described above, a quenching chamber is provided so as to be continuous with the heat treatment furnace that heat-treats the workpiece, and the workpiece that has been heat-treated in the heat treatment furnace and introduced into the quenching chamber is quenched. The workpiece holding member is held on the workpiece holding member provided in the room, and the workpiece holding member is lowered by the lifting / lowering means in a state where the workpiece is pressed onto the workpiece holding member by the pressing means. The held work is immersed in a coolant stored in a coolant tank provided below the quenching chamber, and in this state, the work holding member that holds the work is rotated by a rotating device, and the work is removed. In cooling in the cooling liquid, it is an object to prevent the rotating device from being excessively heated so that the workpiece can be sufficiently cooled.

In quenching treatment device of a work according to the present invention, in order to solve the problems described above, with the heat treatment furnace and quenching chamber for heating a workpiece is found provided to be continuous in a state of being sealed, the is the work which has been introduced into the quenching chamber are heat treated in a heat treatment furnace of held on the workpiece holding member provided on the quenching chamber of the said workpiece is pressed onto the workpiece holding member by press means in was state, is lowered by the workpiece holding member elevating means, the workpiece holding member held by the workpiece, the cooling liquid contained in a cooling liquid bath provided below the quenching chamber guiding the quenching treatment apparatus immersed in quenching is Ru workpiece, the coolant in the rotating shaft that extends housed in the cooling liquid bath from said rotary device provided outside of the quenching chamber Is Rutotomoni rotation transmission mechanism that rotates in conjunction with the rotation shaft is provided in the cooling liquid of the said workpiece holding member workpiece is pressed against the pressing means as described above is below the quenching chamber in a state of being immersed in the cooling liquid contained in a cooling liquid bath provided, the rotation of the workpiece holding member via a rotation transmission mechanism by a rotary shaft in said rotary device Rutotomoni, wherein the workpiece holding introduces the cooling liquid discharge pipe to the through hole provided in a central portion of the member, the cooling liquid in the cooling liquid tank from the cooling liquid discharge pipe is below the workpiece held on the workpiece holding member It has become so that is ejected from.

  Then, like the workpiece quenching apparatus, the rotating shaft extended from the rotating device provided outside the quenching chamber is introduced into the coolant stored in the coolant tank, and this rotation is performed. A rotation transmission mechanism that rotates in conjunction with the shaft is provided in the cooling liquid, and the workpiece holding member that holds the workpiece via the rotation transmission mechanism is rotated by the rotation shaft in the rotation device to hold the workpiece. When the work held by the member is cooled, the rotating device is provided outside the quenching chamber, so that the rotating device is excessively heated as in the case where the rotating device is provided inside the quenching chamber. Nothing will happen.

  Further, as described above, the coolant jet pipe is introduced into the through hole provided in the central portion of the work holding member, and the coolant in the coolant tank is held on the work holding member from the coolant jet pipe. When ejected from under the workpiece, the lower surface of the workpiece held by the workpiece holding member is also cooled by the coolant.

  Here, when the rotating shaft extended from the rotating device provided outside the quenching chamber as described above is introduced into the coolant stored in the coolant tank, the rotating device is installed in the quenching chamber. It can be provided at an outer position, and the rotating shaft can be extended downward from the rotating device and introduced into the cooling liquid stored in the cooling liquid tank.

  Moreover, in the workpiece hardening processing apparatus according to the present invention, the upper surface of the workpiece holding member that holds the workpiece extends from the through hole provided in the center of the workpiece holding member to the outer periphery of the workpiece holding member. It is preferable to provide a plurality of coolant guide grooves. As described above, when a plurality of coolant guide grooves extending from the through hole in the center of the upper surface portion of the workpiece holding member to the outer periphery of the workpiece holding member are provided, the workpiece having a flat bottom surface is held on the workpiece holding member. When these are rotated by the rotating device in the cooling liquid stored in the cooling liquid tank as described above, the cooling liquid ejected from the through hole is provided on the upper surface portion of the rotating work holding member. The workpiece is guided to the outer peripheral side of the workpiece holding member along the respective coolant guide grooves, and the workpiece bottom surface is sufficiently cooled by the coolant.

  Further, in the workpiece quenching apparatus according to the present invention, the coolant jet pipe is introduced into the through hole provided in the central portion of the workpiece holding member as described above, and the coolant jet pipe is inserted into the coolant tank from the coolant jet pipe. When the coolant is jetted from under the workpiece held on the workpiece holding member, the coolant stored in the coolant tank below the quenching chamber is supplied to the coolant jet pipe and circulated. Circulating means can be provided.

  Further, in the workpiece quenching apparatus according to the present invention, a cooling liquid tank communicating with the cooling liquid tank below the quenching chamber is provided below the take-out chamber, and is held by the workpiece holding member and is a quenching chamber. The workpiece cooled in the cooling liquid in the cooling liquid tank below is sent from the work holding member to the take-out holding stand provided in the cooling liquid tank in the take-out chamber so as to be lifted and lowered. The table can be lifted by a lifting / lowering device, and the holding table for holding the workpiece can be taken out from the cooling liquid stored in the cooling liquid tank and taken out into the chamber.

  In the workpiece quenching apparatus according to the present invention, the workpiece heat-treated as described above is led to a quenching chamber having a cooling liquid tank containing a cooling liquid so as to be continuous with the heat treatment furnace in a sealed state. The workpiece that is held by the workpiece holding member is lowered by holding the heated workpiece on the workpiece holding member that moves in the vertical direction in the quenching chamber, and pressing the workpiece against the workpiece holding member by the press member. In order to cool the work by rotating the work holding member holding the work in this state by a rotating device (electric motor, etc.), the rotating device is quenched into the quenching chamber. The rotating shaft provided outside the rotating device is introduced into the cooling liquid in the cooling liquid tank, and the rotation of the rotating shaft is transmitted by the rotation transmission mechanism. Since the work held by the work holding member is transmitted to the work holding member that holds the work and rotated in the coolant stored in the coolant tank, the rotating device is cooled. Can be cooled outside the quenching chamber, and the rotating device is not excessively heated and damaged as in the case where the rotating device is provided inside the quenching chamber.

  Further, as described above, the coolant jet pipe is introduced into the through hole provided in the central portion of the work holding member, and the coolant in the coolant tank is held on the work holding member from the coolant jet pipe. Since the workpiece is ejected from under the workpiece, the bottom surface of the workpiece held by the workpiece holding member is also sufficiently cooled by the coolant.

In the workpiece quenching apparatus according to the embodiment of the present invention, the heat treatment furnace passes through a communication path that allows the heat treatment furnace for heat-treating the work to communicate with the quenching chamber having the cooling liquid tank in which the coolant is contained in a sealed state. It is a schematic sectional explanatory drawing in the moving direction of the workpiece | work which showed the state which guide | induces the workpiece | work heat-processed in (4) on the workpiece holding member in a hardening chamber. In the workpiece quenching apparatus according to the embodiment, as a configuration for rotating the workpiece holding member in the quenching chamber to which the workpiece is guided, the rotating shaft extended from the rotating device provided outside the quenching chamber is cooled. It is a schematic cross-sectional explanatory drawing in the direction intersecting with the moving direction of the workpiece, showing a state in which a rotation transmission mechanism that is introduced into the cooling liquid accommodated in the liquid tank and rotates in conjunction with the rotation shaft is provided. In the hardening processing apparatus of the workpiece | work concerning the said embodiment, the example of the upper surface part of the workpiece holding member holding a workpiece | work is shown, (A) is the penetration provided in the center part of the workpiece holding member in the upper surface part of the workpiece holding member A schematic plan view showing a state in which a plurality of linearly arranged cooling liquid guide grooves are provided from the hole toward the outer periphery of the workpiece holding member, (B) is the center of the workpiece holding member on the upper surface portion of the workpiece holding member It is the schematic plan view which showed the state which provided the cooling fluid guide groove which became several circular arc shape toward the outer periphery of the workpiece | work holding member from the through-hole provided in the part. In the workpiece quenching apparatus according to the above-described embodiment, the workpiece in the moving direction is shown in a state where the workpiece heated in the heat treatment furnace is held on the upper surface portion of the workpiece holding member in the quenching chamber through the communication path. FIG. In the workpiece quenching apparatus according to the above-described embodiment, the lifting frame lifted and lowered by the pair of suspension chains introduced into the quenching chamber from the lifting device provided on the quenching chamber from the state shown in FIG. A state in which a telescopic rod in a press cylinder provided above is extended, and a work held on the upper surface of the work holding member is pressed in a quenching chamber by a press plate rotatably attached to the tip of the telescopic rod. It is a schematic sectional explanatory drawing in the moving direction of the workpiece | work which showed. In the workpiece quenching apparatus according to the above-described embodiment, the workpiece holding member is lowered together with the lifting frame by the suspension chain provided in the lifting device from the state shown in FIG. It is a schematic sectional explanatory drawing in the moving direction of the workpiece | work which showed the state immersed in the cooling fluid in the cooling fluid tank of a quenching chamber in the state which pressed the workpiece | work on the upper surface part of the workpiece holding member with the board. In the workpiece quenching apparatus according to the above-described embodiment, the workpiece holding member is rotated from the state shown in FIG. 6 via the rotation transmission mechanism by the rotation shaft extended from the rotating device, and the workpiece is held. The coolant is ejected toward the bottom surface of the workpiece through the coolant jet pipe introduced into the through hole provided in the central portion of the member, and guided to the bottom surface of the workpiece through the guide groove provided on the top surface portion of the workpiece holding member. Shows a state in which the workpiece holding member is cooled in the coolant, and (A) intersects the moving direction of the workpiece, which shows a state in which the workpiece holding member is rotated via the rotation transmission mechanism by the rotating shaft extended from the rotating device. FIG. 4B is a schematic cross-sectional explanatory diagram in the direction of movement of the workpiece showing the above state. In the workpiece quenching apparatus according to the embodiment, from the state shown in FIG. 7, the rotation of the workpiece holding member by the rotating device is stopped, the telescopic rod in the press cylinder is contracted, and the press It is a schematic sectional explanatory drawing in the moving direction of the workpiece | work which showed the state which separated the board from the workpiece | work and lifted it out of the cooling fluid. In the workpiece quenching apparatus according to the embodiment, from the state shown in FIG. 8, the pusher in the transfer cylinder provided outside the cooling liquid tank in the quenching chamber is extended toward the take-out chamber, Movement of work showing a state in which the work held on the upper surface of the work holding member is transferred onto a take-out holding table immersed in the cooling liquid in the take-out chamber where the quenching chamber and the cooling liquid tank communicate with each other It is a schematic sectional explanatory drawing in a direction. FIG. 10 is a schematic cross-sectional explanatory diagram in the moving direction of the work showing a state in which the pusher in the transfer cylinder is contracted from the state shown in FIG. 9 in the work hardening processing apparatus according to the embodiment. In the workpiece quenching apparatus according to the above-described embodiment, from the state shown in FIG. 10, the above-described take-out holding table on which the work has been transferred in the cooling liquid in the cooling liquid tank of the take-out chamber is taken out. And lifts the workpiece holding member together with the lifting platform by the lifting winch. FIG. 5 is a schematic cross-sectional explanatory view in the moving direction of the workpiece, showing a state where the lifting platform and the workpiece holding member are returned to the original positions for guiding the workpiece heated in the heat treatment furnace. In the workpiece quenching apparatus according to the above-described embodiment, a state in which the workpiece held on the take-out holding table guided into the take-out chamber from the state shown in FIG. 11 is taken out from the take-out chamber to the outside. It is a schematic cross-sectional explanatory drawing in the moving direction of the shown workpiece | work.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a workpiece quenching apparatus according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings. The workpiece quenching apparatus according to the present invention is not limited to the one shown in the following embodiments, and can be implemented with appropriate modifications within the scope not changing the gist of the invention.

  Here, in the workpiece quenching apparatus in the embodiment shown in FIG. 1 and the like, the heat treatment furnace 10 for heat-treating the workpiece W and the quenching chamber 20 for quenching the heat-treated workpiece W are sealed. The work W communicated by the communication path 11 and heated in the heat treatment furnace 10 is guided to the quenching chamber 20 in a state of being sealed through the communication path 11.

  In the workpiece quenching apparatus in this embodiment, the workpiece W that is heat-treated in the heat treatment furnace 10 and introduced into the quenching chamber 20 through the communication path 11 is a workpiece provided in the quenching chamber 20. The workpiece holding member 21 is held by the lifting / lowering means 40 that lifts and lowers the workpiece holding member 21 in a state where the workpiece W is held on the upper surface portion 211 of the holding member 21 and pressed against the upper surface portion 211 of the workpiece holding member 21 by the pressing means 30. The workpiece W held down on the upper surface portion 211 together with the workpiece holding member 21 is immersed in the coolant x stored in the coolant tank 50 below the quenching chamber 20, and is heat-treated. The workpiece W is cooled and quenched.

  Here, in the workpiece quenching apparatus according to this embodiment, as shown in FIG. 2 or the like, the lifting / lowering means 40 for lifting the workpiece holding member 21 is provided on the ceiling 20a of the quenching chamber 20 as described above. A pair of suspension chains 42 are introduced from the lifting device 41 into the quenching chamber 20, and the lifting frames 43 are suspended from the lifting chains 42, and linears provided on both sides of the lifting frames 43. The guides 44 are slidably mounted on guide members 45 provided in the vertical direction on both sides in the quenching chamber 20 so that the lifting frame 43 can be slid in the vertical direction along the guide members 45. Yes.

  In this embodiment, the pair of support arms 46 are extended downward from both sides of the lifting frame 43 and immersed in the coolant x stored in the coolant tank 50. A holding member 47 is provided at the lower end of the pair of support arms 46. And the rotation support part 47a extended in the cylinder shape toward upper direction is provided in the center part of this holding member 47, The said work holding member is provided via the bearing 47b provided in the inner peripheral side of this rotation support part 47a. 21 is rotatably held.

  Further, in the holding member 47, the holding member 47 is arranged more than the quenching chamber 20 than the quenching chamber 20 so that a rotating device 60 for rotating the workpiece holding member 21 is provided outside the quenching chamber 20. On the holding member 47 extended to the outside of the quenching chamber 20, the rotating device is extended into the cooling liquid x in the cooling liquid tank 50 extended in one direction intersecting the direction in which W is moved. A rotating device holding base 61 for holding 60 above the coolant tank 50 is provided.

  Then, the rotating shaft 62 rotated by the rotating device 60 held on the rotating device holding table 61 is extended downward from above the rotating device holding table 61 so that the coolant x in the coolant tank 50 is reached. The rotary shaft 62 is further extended downward through the holding member 47, and the rotary gear serves as a rotation transmission mechanism 70 that rotates the work holding member 21 at the tip of the rotary shaft 62. 71 is provided.

  Further, since the rotating shaft 62 is sealed from the outside with the cooling liquid x of the cooling liquid tank 50, for example, as in the case where the rotating shaft 62 is provided through the bottom plate of the cooling liquid tank 50, liquid leakage prevention is possible. There is no need to provide a sealing mechanism, and the structure is simplified.

  Further, in the workpiece holding member 21, as shown in FIG. 2 and the like, a through hole 212 is provided at the center thereof, and the coolant x in the coolant tank 50 is held by the upper surface portion 211 of the workpiece holding member 21. A through hole 212 for introducing the coolant jet pipe 51 to be sprayed from under the workpiece W is provided, and a plurality of the upper surface portion of the workpiece holding member 21 are extended from the through hole 212 in the central portion to the outer periphery of the workpiece holding member 21. The coolant guide groove 213 is provided, and the coolant x sprayed from under the workpiece W is guided to the outer periphery of the workpiece holding member 21 through the coolant guide grooves 213 under the workpiece W, thereby cooling the lower surface of the workpiece W. It is made to cool with the liquid x.

  Here, the shape and number of the plurality of cooling liquid guide grooves 213 provided so as to extend from the through hole 212 in the central portion of the upper surface portion 211 of the work holding member 21 to the outer periphery of the work holding member 21 are not particularly limited. For example, as shown in FIG. 3A, a coolant guide groove that is linearly formed radially from the through hole 212 in the center of the upper surface portion 211 of the work holding member 21 toward the outer periphery of the work holding member 21. As shown in FIG. 3B, a plurality of arcs are formed radially from the through hole 212 in the center of the upper surface of the work holding member 21 toward the outer periphery of the work holding member 21 as shown in FIG. A coolant guide groove 213b can be provided.

  Here, when the lower surface of the workpiece W is flat, the coolant x can contact only the portion of the through hole 212 on the lower surface of the workpiece W. However, in this way, the coolant x also contacts other portions. And cooling efficiency is improved. Further, when the work holding member 21 rotates, a centrifugal force is generated in the coolant guide groove 213, and the coolant x flows quickly through the coolant guide groove 213. Further, as shown in FIG. 3B, the coolant x flows more smoothly by forming an arc shape like the coolant guide groove 213b.

  Further, in the work holding member 21, a cylindrical body 214 having a through hole 212 provided in the central portion and extending downward from the upper surface portion 211 is formed in the central portion of the holding member 47. A rotation support portion 47a extending in a cylindrical shape upward is held rotatably via the bearing 47b.

  Further, as the rotation transmission mechanism 70 that rotates the workpiece holding member 21 by the rotating device 60, a large-diameter gear portion 72 that rotates the workpiece holding member 21 is provided at the lower end of the body portion 214 of the workpiece holding member 21. In addition, the holding member 47 is provided with an idle gear 73 so as to mesh with the rotating gear 71 provided at the tip of the rotating shaft 62 rotated by the rotating device 60 and the gear portion 72, and rotated. The rotation of the rotary gear 71 provided at the tip of the shaft 62 is transmitted to the gear portion 72 at the lower end of the trunk portion 214 of the workpiece holding member 21 via the idle gear 73, and the workpiece holding member 21 is rotated by the rotating device 60. I try to let them.

  In the workpiece quenching apparatus according to this embodiment, as the pressing means 30 that presses the workpiece W guided to the upper surface portion 211 of the workpiece holding member 21 to the upper surface portion 211 of the workpiece holding member 21 as described above, A press cylinder 31 is provided on an elevating frame 43 suspended by a suspension chain 42 introduced into the quenching chamber 20 from the elevating apparatus 41 and is expanded and contracted downward from the press cylinder 31. A telescopic rod 32 having a press plate 34 rotatably attached thereto via a bearing 33 is used.

  The telescopic rod 32 is extended downward by the pressing cylinder 31 and is held on the upper surface portion 211 of the work holding member 21 by the press plate 34 rotatably attached to the distal end of the telescopic rod 32. The pressed work W is pressed.

  Further, in the workpiece quenching apparatus in this embodiment, the workpiece W that has been heat-treated as described above and held on the upper surface portion of the workpiece holding member 21 is applied to the upper surface portion 211 of the workpiece holding member 21 by the pressing means 30. In the pressed state, the work holding member 21 is lowered by the elevating means 40, and the work W is immersed in the cooling liquid x accommodated in the cooling liquid tank 50 below the quenching chamber 20 together with the work holding member 21. When the quenching treatment is performed, the coolant x in the coolant tank 50 is sprayed from under the workpiece W through the coolant jet pipe 51 introduced into the through hole 212 in the center of the workpiece holding member 21. Circulation means 52 such as a circulation pump for supplying the coolant x in the coolant tank 50 so as to circulate the coolant x is provided. So that sprayed coolant x in the cooling liquid tank 50 is continuously below the workpiece W through the coolant jet pipe 51 by a circulating means 52.

  Further, in the workpiece quenching apparatus in this embodiment, the workpiece is communicated with the coolant tank 50 in which the coolant x is stored below the quenching chamber 20 on the downstream side of the quenching chamber 20 in the feed direction of the workpiece W. A take-out chamber 80 is provided, and a lifting rod 82 is extended into the take-out chamber 80 from a take-up lifting device 81 provided on the take-out chamber 80, and a take-out holding stand is provided at the tip of the lift rod 82. 83 is attached.

  The quenching chamber 20 and the take-out chamber 80 are provided with a partition wall 12 between them, and the lower end thereof is immersed in the cooling liquid x, so that the atmosphere inside the heat treatment chamber 10, the communication path 11, and the quenching chamber 20 is exposed to the outside. Sealed to prevent leakage.

  Then, the lifting rod 82 is extended from the take-out lifting device 81, and the take-out holding base 83 is immersed and held in the coolant x stored in the coolant tank 50 below the take-out chamber 80. On the other hand, the lifting rod 82 is shrunk, and the take-out holding base 83 immersed in the coolant x in the coolant tank 50 is taken out from the coolant x into the take-out chamber 80. The workpiece W taken out into the take-out chamber 80 is guided from the take-out chamber 80 to a feed member 85 provided outside.

  Further, in the workpiece quenching apparatus in this embodiment, a transfer cylinder 53 is provided outside the coolant tank 50 on the upstream side in the feed direction of the workpiece W on the side opposite to the take-out chamber 80, and this transfer cylinder. The pusher 53a introduced from 53 into the coolant x in the coolant tank 50 is expanded and contracted in the feed direction of the workpiece W.

  Then, the workpiece W held on the upper surface portion 211 of the workpiece holding member 21 is cooled by being immersed in the cooling liquid x accommodated in the cooling liquid tank 50 below the quenching chamber 20 as described above. After releasing the pressing of the work W by the press plate 34 in the means 30, the pusher 53 a in the transfer cylinder 53 is extended toward the take-out chamber 80 and held on the upper surface portion 211 of the work holding member 21. The workpiece W is passed through the guide guide base 84 provided in the coolant x of the coolant tank 50 between the quenching chamber 20 and the take-out chamber 80, and the coolant tank 50 below the take-out chamber 80 as described above. It is made to transfer on the said holding | maintenance holding | maintenance stand 83 in the state immersed in the cooling fluid x.

  In the workpiece quenching apparatus in this embodiment, when the workpiece W heat-treated in the heat treatment furnace 10 is quenched in the quenching chamber 20, the workpiece W heat-treated in the heat treatment furnace 10 is shown in FIG. As shown, the heat treatment furnace 10 and the quenching chamber 20 are led into the quenching chamber 20 through the communication passage 11 communicated in a sealed state, and the workpiece holding member 21 is moved into the quenching chamber 20 by the lifting means 40. And the workpiece W is held on the upper surface portion 211 of the workpiece holding member 21.

  Further, after the work W is held on the upper surface portion 211 of the work holding member 21 as described above, as shown in FIG. 5, the telescopic rod 32 in the press means 30 is extended as described above, and this telescopic rod The workpiece W is pressed against the upper surface portion 211 of the workpiece holding member 21 by the press plate 34 rotatably attached to the tip of the workpiece 32.

  Then, in the state where the workpiece W is pressed against the upper surface portion 211 of the workpiece holding member 21 by the press plate 34 in the pressing means 30 as described above, as shown in FIG. The press means 30 is lowered together, and the work W held on the upper surface portion 211 of the work holding member 21 is immersed in the cooling liquid x stored in the cooling liquid tank 50 below the quenching chamber 20, and The coolant is blown from below the workpiece W held on the upper surface portion 211 of the workpiece holding member 21 into the through hole 212 in the central portion of the workpiece holding member 21. Tube 51 is inserted.

  Next, the workpiece W is pressed against the upper surface portion 211 of the workpiece holding member 21 by the press plate 34 in this way, and the workpiece W held on the upper surface portion 211 of the workpiece holding member 21 is accommodated in the cooling liquid tank 50 below the quenching chamber 20. 7A and 7B with the coolant jet pipe 51 inserted into the through-hole 212 in the central portion of the workpiece holding member 21 while being immersed in the coolant x. A rotating shaft 62 introduced into the coolant x accommodated in the coolant tank 50 from a rotating device 60 provided outside the quenching chamber 20, and a rotating gear 71 provided at the tip of the rotating shaft 62; A rotation transmission mechanism 70 comprising a large-diameter gear portion 72 at the lower end of the work holding member 21 and an idle gear 73 provided on the holding member 47 so as to mesh with the rotary gear 71 and the gear portion 72. Accordingly, together with the workpiece holding member 21, the workpiece W pressed against the upper surface portion 211 of the workpiece holding member 21 by the press plate 34 is rotated to cool the workpiece W in the cooling liquid x in the cooling liquid tank 50. Like that. Further, the coolant jet pipe in which the coolant x is introduced into the through hole 212 in the center of the work holding member 21 while the coolant x in the coolant tank 50 is circulated by the circulation means 52. The coolant x sprayed continuously under the workpiece W through 51 is provided so as to extend from the through hole 212 in the center of the upper surface portion 211 of the workpiece holding member 21 to the outer periphery of the workpiece holding member 21. Further, it is guided under the workpiece W through the respective coolant guide grooves 213, and the lower surface of the workpiece W is also cooled by the coolant x.

  Further, after the work W on the upper surface portion 211 of the work holding member 21 is cooled in this way, as shown in FIG. 8, the telescopic rod 32 in the pressing means 30 is contracted, and the work W is moved to the work holding member. 21 is moved onto the coolant x in the coolant tank 50.

  Next, as shown in FIG. 9, it is introduced into the coolant x in the coolant tank 50 from the transfer cylinder 53 provided outside the coolant tank 50 on the upstream side in the feed direction of the workpiece W on the side opposite to the take-out chamber 80. In the coolant x of the coolant tank 50 between the quenching chamber 20 and the take-out chamber 80, the workpiece W held by the workpiece holding member 21 on the upper surface portion 211 is extended in the feed direction of the workpiece W. Is transferred onto the take-out holding base 83 that is immersed in the coolant x in the coolant tank 50 below the take-out chamber 80 as described above. Thereafter, as shown in FIG. 10, the pusher 53a extended from the transfer cylinder 53 in the feeding direction of the workpiece W is contracted and returned to the original position.

  Then, after the work W is transferred to the take-out holding base 83 immersed in the coolant x in the coolant tank 50 below the take-out chamber 80 as described above, the take-out is performed as shown in FIG. The lifting / lowering rod 82 in the lifting / lowering device 81 provided on the chamber 80 is contracted to raise the removal holding table 83 on which the workpiece W is transferred, and the extraction holding table 83 is cooled to the cooling temperature. The liquid tank 50 is moved onto the cooling liquid x and guided into the take-out chamber 80, and the work holding member 21 and the press means 30 after the work W is moved by the elevating means 40 are raised to the quenching chamber. 20 and return them to their original state.

  Thereafter, as shown in FIG. 12, the work W held in the take-out holding base 83 led into the take-out chamber 80 is led to a feeding member 85 provided outside the take-out chamber 80. The work W heat-treated in the heat treatment furnace 10 as described above is guided to the communication passage 11 that communicates with the heat treatment furnace 10 and the quenching chamber 20 sealed, and the above operation is repeated. The workpiece W heated in the heat treatment furnace 10 is sequentially quenched.

DESCRIPTION OF SYMBOLS 10: Heat processing furnace 11: Communication path 12: Partition 20: Quenching chamber 20a: Ceiling 21: Work holding member 30: Press means 31: Pressing cylinder 32: Telescopic rod 33: Bearing 34: Press plate 40: Lifting means 41: Lifting Device 42: suspension chain 43: lifting frame 44: linear guide 45: guide member 46: support arm 47: holding member 47a: rotation support part 47b: bearing 50: cooling liquid tank 51: cooling liquid jet pipe 52: Circulating means 53: Transfer cylinder 53a: Pusher 60: Rotating device 61: Rotating device holding base 62: Rotating shaft 70: Rotating transmission mechanism 71: Rotating gear 72: Gear portion 73: Idle gear 80: Extraction chamber 81: Lifting lifting / lowering Device 82: Lifting rod 83: Extraction holding base 84: Guide guide base 85: Feed member 211 : Upper surface part 212: Through hole 213: Coolant guide groove 213a: Coolant guide groove 213b: Coolant guide groove 214: Body W: Work x: Coolant

Claims (5)

With a heat treatment furnace and quenching chamber for heating a workpiece is found provided to be continuous in a state of being sealed, wherein the workpiece introduced into the quenching chamber are heat treated in a heat treatment furnace is provided quenching chamber of the held on the workpiece holding member, in a state where the workpiece is pressed against the top of the workpiece holding member by press means, it said workpiece holding member is lowered by the lifting means, the workpiece holding member the work which is held, in the quenching treatment apparatus is immersed in quenching is Ru work in the cooling fluid contained in the cooling liquid tank provided below the quenching chamber, to the outside of the quenching chamber rotary shaft extending from the provided rotating device is introduced into a cooling liquid contained in a cooling liquid bath of the Rutotomoni, the cooling liquid rotation transmission mechanism of the rotating interlockingly with the rotation axis Setting It is, in a state of being immersed in the cooling liquid in which said workpiece holding member workpiece is pressed is received in the cooling liquid bath provided below the quenching chamber by pressing means as described above, in the rotary device Rutotomoni said workpiece holding member via a rotation transmission mechanism by a rotary shaft is rotated, the cooling liquid jet pipe is introduced into a through hole provided in a central portion of said workpiece holding member, the cooling liquid discharge pipe coolant in the cooling liquid tank from and quenching treatment device of a work, characterized in Rukoto ejected from the bottom of the workpiece held on the workpiece holding member. In quenching treatment device of a work according to claim 1, wherein the rotary shaft from the rotary device provided on the outside of the position of said quenching chamber is accommodated in the cooling liquid tank of the being extended downward quenching treatment device of a work which is characterized that you have been introduced into the cooling liquid was. 3. The workpiece hardening apparatus according to claim 1, wherein the workpiece holding member is inserted into the upper surface portion of the workpiece holding member that holds the workpiece from the through hole provided in a central portion of the workpiece holding member. quenching treatment device of a work in which a plurality of coolant guide groove extending on the outer periphery of which is characterized in that provided. In quenching treatment device of a work according to any one of claims 1 to 3, supply coolant contained in the coolant tank provided under the quenching chamber to the coolant jet pipe of said quenching treatment device of a work, wherein a circulation means that will be circulated are provided. In quenching treatment device of a work according to any one of claims 1 to 4, the cooling liquid tank is taken out chamber communicating with a chilled liquid bath below the said quenching chamber is provided below, the extraction cooled workpiece cooling liquid is held in the work holding member in the cooling liquid bath below the quenching chamber, which is provided from the workpiece holding member vertically movably in the cooling liquid bath in said extraction chamber is sent to use holder, and the holder for taking out is increased by the extraction lifting device, the extraction holder of holding the workpiece, taken up in the room is taken out from the cooling liquid tank cooling liquid contained in the quenching treatment device of a work, characterized in that it is issued.

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