JP2012026003A - Treating device with cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a treating device with a cover, capable of achieving compactification of width of a treatment line, and achieving favorable appearance quality and favorable maintainability by being covered with the cover.SOLUTION: A heat treatment line 2 including a conveying mechanism 80 conveying workpiece W, a workpiece lower part heat treatment part 50 treating the workpiece W, a workpiece upper part heat treatment part 60, an aftercool treatment part 70 and the like is arranged on a base part 4 of a frame 3. Moreover, the conveying mechanism 80, the workpiece lower part heat treatment part 50, the workpiece upper part heat treatment part 60, the aftercool treatment part 70 and the like are arranged at positions overlapped in a front and rear direction so as to be varied in distance from the front side end of the base part 4. The front side of the frame 3 is covered with a front cover 100. The front cover 100 includes an upper part opening/closing door 112 covering the upper part of the base part 4. The upper part opening/closing door 112 includes: a lower edge part arranged in the vicinity of the front side end of the base part 4; and an overhang part 126 swelled to the outside from the front side end of the base part 4 in the upper part of the lower edge part. Protruded regions 21, 22 protruded to the utmost front side of the heat treatment line 2 are covered with the overhang part 126.

Description

  The present invention relates to a processing apparatus in which a processing line including a transport mechanism that transports a workpiece and a processing unit that processes the workpiece is provided in the frame, and the front side of the frame is covered with a front cover.

2. Description of the Related Art Conventionally, many processing apparatuses are used in which a processing line including a transport mechanism for transporting a workpiece and a processing section for processing the workpiece is disposed on a base portion of a frame.
For example, Patent Document 1 below describes a constant velocity joint quenching device in which a cup portion and a stem shaft portion are coaxially adjacent to each other and integrally provided.

  In this quenching apparatus, a first quenching station for quenching the outer peripheral surface of the stem shaft portion, a second quenching station for quenching the inner surface of the cup portion, and a third quenching for quenching spline holes in the workpiece. An entrance station is provided, and a transport mechanism for transporting a workpiece is provided between the stations. A heat treatment line is constituted by these first to third quenching stations and a transport mechanism, and this heat treatment line is arranged on the base portion of the frame and operates in the frame.

  In order to quench the constant velocity joint by using this constant velocity joint quenching apparatus, the workpiece is carried from the inlet and sequentially transferred to the first to third quenching stations by the transport mechanism. Each part is heated and cooled sequentially for heat treatment, and the heat-treated work is carried out from the outlet.

JP 2004-168133 A

  However, in the heat treatment apparatus as described above, various devices arranged in the frame are exposed, and in addition to being unsatisfactory in appearance, the boundary with the space around the apparatus is not clear. It is desirable to cover with a cover.

  By the way, in various processing apparatuses, a conveyance mechanism and a processing unit are often arranged in one direction. Even in Patent Document 1, each heating coil and cooling unit of the first to third quenching stations is provided. And the transport mechanism are arranged in one direction. In such an apparatus, the lateral width on the front side, that is, the distance from the entrance to the exit tends to be long.

  In order to reduce the lateral width of the apparatus as much as possible and make it compact, for example, it is conceivable to arrange the heat treatment units and the transport mechanism so as to overlap in the front-rear direction from the front side. In this case, each processing unit may be disposed on the base unit by increasing the depth on the base unit.

  However, if the depth of the base portion is increased and the processing units and the transport mechanism are arranged so as to overlap each other, it is not easy to maintain the equipment on the rear side when performing maintenance on each processing unit and the transport mechanism. Here, not only is it difficult to work with other equipment placed in front, but an operator standing on the front side end of the base part in order to maintain equipment placed in a deep position in the base part The maintenance part at the position where the person leans over the base part and is recessed must be operated, and the maintainability is poor.

  Therefore, an object of the present invention is to provide a processing apparatus with a cover that can reduce the width of the processing line, can be covered with a cover to improve the appearance quality, and has good maintainability.

  In the processing apparatus with a cover according to the present invention for achieving the above object, a processing line including a transport mechanism for transporting a workpiece and a processing section for processing the workpiece is disposed on a base portion of the frame. An upper opening / closing door that is disposed in a position overlapping the front and rear so that the distance from the front side end of the base portion is different, and the front side of the frame is covered with a front cover, and the front cover covers the base portion The upper opening / closing door is provided with a lower edge portion disposed in the vicinity of the front end portion of the base portion and a bulge outward from the front end portion of the base portion at a position above the lower edge portion. The overhang portion covers the protruding portion that protrudes to the most front side of the processing line.

According to such a processing apparatus with a cover, since the transport mechanism and the processing section are arranged at positions where they overlap in the front-rear direction from the front side end of the base section, the width of the processing line is reduced and the apparatus is made compact. Can be planned.
The upper door of the front cover has a lower edge portion disposed near the front side end portion of the base portion, and an overhang portion bulging outward from the lower edge portion, and the overhang portion protrudes the processing line. Since the portion is covered, even if the protruding portion protrudes outward from the front side end of the base portion, the front cover can reliably cover the front side of the frame with the front cover by closing the upper opening / closing door.

  Then, the base part is formed so that the depth from the front side end portion is narrowed by protruding the projecting portion of the processing line to the outside from the front side end portion of the base portion, and the upper opening / closing door having an overhang portion Since the upper part of the base part is covered, the operator can approach the front side end part of the base part by opening the upper door. For this reason, even when the transport mechanism and the processing unit are arranged at positions where they overlap each other and the maintenance site is located at a position on the back side from the front end of the base unit, the operator can easily approach the maintenance site during maintenance. Workability can be improved, and maintainability can be improved.

  The cover portion preferably includes a plurality of upper opening / closing doors made of sliding doors, and each upper opening / closing door is preferably provided with an overhanging portion having a longitudinal section of substantially the same shape over the entire width.

  If it does in this way, since each upper opening / closing door can be slid and a plurality of upper opening / closing doors can be arranged mutually inside and outside, the front side of a frame can be opened widely. Therefore, it is possible to widely open the upper door at various positions on the processing line, and it is possible to ensure good workability of maintenance work.

  In this processing apparatus with a cover, the upper rail for the door and the lower rail for the door are arranged upward on the front side of the frame, and the upper rail for the door or the lower rail for the door at the top and bottom of the upper door, respectively. It is preferable that a rotating body capable of rolling up is provided, and the upper door is slidably supported by the rotating body on the upper and lower door rails.

  In such a configuration, the upper door is overhanged because the rotating body rolls on the upper rail for the door and the lower rail for the door that are arranged upward on the frame to slide the upper door. Even if the center of gravity is decentered with respect to the upper rail for the door and the lower rail for the door, the opening and closing can be smoothly opened and closed with a small resistance.

A handle for opening and closing the upper opening / closing door protrudes from a position below the overhang portion, and the handle is preferably arranged so as not to protrude outward from the overhang portion.
If it does in this way, even if it raises a handle greatly on the surface of an upper opening-and-closing door and improves operativity, it is hard to get in the way.

  In the processing apparatus with a cover, preferably, the front cover includes an openable and closable lower cover that covers the inside of the base portion from the front side, and a predetermined liquid is supplied to a plurality of locations on the processing line inside the base portion covered by the lower cover. A base comprising a plurality of liquid supply passages for supply, a flow adjustment portion for adjusting the flow state of a predetermined liquid in each of the plurality of liquid supply passages, wherein the plurality of flow adjustment portions are covered with a lower cover It is arrange | positioned in the front side edge vicinity of a part.

  With this configuration, since the plurality of flow adjusting portions are arranged in the vicinity of the front side end of the base portion, the flow state of the plurality of liquid supply paths can be easily made from the front side by opening the lower cover of the front cover. Therefore, maintainability can be further improved.

  The plurality of liquid supply paths are arranged from the primary side introduction part to the front side along the bottom part of the base part, the flow adjusting part is arranged at a position rising on the front side of the base part, and along the top part of the base part It is preferable to be disposed in each processing line.

  In this way, in each of the many liquid supply paths, each flow adjusting unit is arranged along the front side of the base unit or along the top of the base unit even if the flow adjusting units are arranged on the front side of the base unit. A wide space can be secured and the inside of the base can be used effectively.

Each flow adjustment unit is preferably arranged in the vicinity of a front position of a portion to which a predetermined liquid is supplied by each liquid supply path having the flow adjustment unit.
If it does in this way, an operator will be easy to recognize the part adjusted by each flow adjustment part, and it will be easy to perform adjustment work of each flow state of the predetermined liquid supplied to each part.

  According to the processing apparatus with a cover of the present invention, the transport mechanism and the processing unit are arranged at positions where the front end of the base unit overlaps with the front side end, and the upper opening / closing door of the front cover is near the front side end of the base unit. And an overhang portion bulging outward from the lower edge portion, and the overhang portion covers the projecting portion of the processing line. Therefore, the width of the processing line can be reduced, and the appearance quality can be improved by covering with the cover, and the maintainability is improved.

It is a schematic front view of the state which removed the cover of the heat processing apparatus which concerns on embodiment of this invention. It is a schematic top view of the state which removed the cover of the heat processing apparatus which concerns on embodiment. It is a front view of the heat processing apparatus concerning an embodiment. It is a rear view of the heat processing apparatus which concerns on embodiment. It is a left view which shows the workpiece | work carrying-in side of the heat processing apparatus which concerns on embodiment. It is a right view which shows the workpiece | work carrying-out side of the heat processing apparatus which concerns on embodiment. (A) is a front view of the upper cover which concerns on the heat processing apparatus of embodiment, (b) is the top view. It is a side view of the upper cover which concerns on the heat processing apparatus of embodiment. (A) is a side view of the outside upper opening-and-closing door which concerns on the heat processing apparatus of embodiment, (b) is a rear view of the upper slide support part. It is a side view of the inner upper door which concerns on the heat processing apparatus of embodiment. It is a rear view of the lower slide support part in the upper door of FIG. It is a partial side view for demonstrating the liquid supply path which concerns on the heat processing apparatus of embodiment. It is a partial front view for demonstrating the liquid supply path which concerns on the heat processing apparatus of embodiment.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 13.
The processing apparatus according to this embodiment is a heat treatment apparatus for performing heat treatment of the workpiece W to be processed. The workpiece W of this embodiment is a constant velocity joint intermediate for producing, for example, a constant velocity joint for a vehicle, and a cup portion Wc and a hollow or solid stem shaft portion Ws are provided adjacent to each other coaxially. It is a thing. The cup portion Wc may be referred to as a workpiece lower portion, and the stem shaft portion Ws may be referred to as a workpiece upper portion.

[overall structure]
In the heat treatment apparatus 1, as shown in FIGS. 1 and 2, a heat treatment line 2 for sequentially induction-hardening the cup portion Wc and the stem shaft portion Ws is disposed on the base portion 4 of the frame 3. Various driving units, wiring, piping, and the like necessary for operating the heat treatment line 2 are disposed inside the base unit 4. The entire front side of the frame 3 including the base portion 4 and the upper portion thereof is covered with a front cover 100 as shown in FIG. 3, and the entire back side and both side surfaces are respectively covered with a back cover 101 as shown in FIGS. And side covers 102 and 103.

  In the heat treatment line 2, as shown in FIGS. 1 and 2, a temporary phasing unit 30 is provided between a carry-in position provided on one end side in the width direction of the heat treatment apparatus 1 and a carry-out position provided on the other end side. And a phase determination processing unit comprising the phase determination unit 40, a workpiece lower heat treatment unit 50, a workpiece upper heat treatment unit 60, and an aftercool processing unit 70 are provided in order, and a transport mechanism for transporting the workpiece W between the processing units. 80 is provided.

[Transport mechanism]
The transport mechanism 80 has a work stop position from the first station A to the sixth station F between the carry-in position and the carry-out position, and is located at the front side end of the middle plate 5 provided in the base portion 4 throughout. A conveyance axis L is set linearly along the workpiece, and the workpiece W can be intermittently conveyed to the stations A to F along the conveyance axis L. Here, the transport axis L is a movement locus of the central axis of the work W to be transported.

  The transport mechanism 80 includes a table-type transport mechanism 10 that transports the workpiece W from the first station A that is the carry-in position to the fourth station D that is the intermediate transfer position, and a sixth station F that is the unload position from the fourth station D. And a gantry-type transport mechanism 20 that transports the workpiece W to the top.

The table-type transport mechanism 10 is supported along the transport axis L by a transport lower rail 15 fixed to the upper surface of the middle plate 5 of the base portion 4, and is slidably supported by the transport lower rail 15, with the stem shaft portion Ws facing upward The three tables 11, 12, and 13 that support the cup portion Wc of the workpiece W and the first and second air cylinders 16 and 17 that reciprocate the tables 11, 12, and 13 are provided.
The gantry-type transport mechanism 20 has a ceiling rail 24 fixed to the upper frame 3a of the frame 3 along the transport axis L, is slidably supported by the ceiling rail 24, and holds the stem shaft portion Ws of the workpiece W. The first and second gantry 21 and 22 that can move up and down, and the third and fourth air cylinders 25 and 26 that reciprocate the first and second gantry 21 and 22, respectively.

[Phase determination processing section]
The temporary phase determining unit 30 is provided in the first station A, and places the workpiece W on the temporary phase determining table 11 with the stem shaft portion Ws facing upward to determine the temporary phase in the circumferential direction. The temporary phase determining unit 30 can perform maintenance such as replacement and position adjustment of the temporary phase determining table 11 according to the workpiece W.

  The phasing unit 40 is provided at the second station B, and the workpiece W placed on the temporary phasing table 11 is transferred to the phasing table 12 by the lifting chuck mechanism 44 and the accurate circumferential phase of the workpiece W is set. Make a decision. The phase determination unit 40 can perform maintenance such as replacement and position adjustment of the phase determination table 12 and position adjustment of the lifting chuck mechanism 44 according to the workpiece W.

[Work heat treatment part under the workpiece]
The workpiece lower heat treatment section 50 is intermittently half-rotatable and raised and lowered at a 180 ° symmetrical position around the workpiece lower rotating shaft 53a and the workpiece lower rotating shaft 53a which are erected on the middle plate 5 of the base portion 4. Two rotating chuck mechanisms 52 that are detachably mounted, and a workpiece lowering heat treatment head 56 that is provided on the middle plate 5 and that can heat-treat the cup portion Wc of the workpiece W held by the rotating chuck mechanism 52 are provided. The heat treatment head 56 for the lower part of the work is provided with a heating coil part, a coolant injection part, and the like.

  In the workpiece lower heat treatment section 50, the position facing the third station C of the transfer mechanism 80 and the workpiece lower heating position G where the workpiece lower heat treatment head 56 is provided is the rotation stop position of the two rotary chuck mechanisms 52. It has become. The third station C and the workpiece lower portion heating position G are disposed obliquely with respect to the transfer axis L, and the workpiece lower portion rotation shaft 53a and the workpiece lower portion heat treatment head 56 are connected to the heat treatment apparatus 1 in a front view of the heat treatment apparatus 1. The position is shifted in the width direction.

  In the workpiece lower heat treatment section 50, the stem shaft portion Ws of the workpiece W transferred to the third station C by the phasing table 12 is held by the rotating chuck mechanism 52, and the workpiece W is lifted and rotated to rotate the workpiece lower heat treatment head. The cup portion Wc is heat-treated by rotating and lowering the workpiece W while rotating the workpiece W, and the rotary chuck mechanism 52 is rotated again to return to the third station C, and the transfer table 13 is transferred to the third station C. Perform the loading operation.

  In the workpiece lower heat treatment section 50, the lowering position of the rotary chuck mechanism 52 and the opening / closing amount of the chuck are adjusted according to the workpiece W, the heating coil section and the coolant injection section of the workpiece heat treatment head 56 are replaced, and the transfer table 13. Maintenance such as replacement and position adjustment is possible.

[Intermediate delivery position]
The fourth station D is at the intermediate delivery position, and the workpiece W is transferred to the fourth station D while being placed on the transfer table 13 at the third station C.
In the fourth station D, the work W is held and raised by the first gantry 21 that is slidably supported on the ceiling rail 24 and can be moved up and down, and transferred to the fifth station E of the work upper heat treatment section 60. At the intermediate delivery position, maintenance such as position adjustment of the first gantry 21 is possible.

[Work heat treatment part]
The workpiece upper heat treatment section 60 includes a workpiece upper rotation shaft 61c protruding from the middle plate 5 of the base portion 4, an intermittent rotation table 61 supported by the workpiece upper rotation shaft 61c and capable of intermittent rotation every 1/3 rotation, Three workpiece upper receiving devices 61h that are equally provided at an equal distance from the center of the intermittent rotating table 61, and the workpiece upper receiving device 61h are provided so as to surround the workpiece W and to be able to spray coolant. And an annular cooling jacket 62. Here, the three positions where the rotation of the workpiece upper receiving tool 61h stops are the fifth station E, the workpiece upper heating position H, and the workpiece upper cooling position I.

  The fifth station E is provided at a position on the near side that overlaps the workpiece upper rotating shaft 61c of the intermittent rotation table 61 in a front view of the heat treatment apparatus 1, and the workpiece upper heating unit 65 rotates the workpiece upper portion of the intermittent rotation table 61. It is provided at a position that does not overlap with the shaft 61c.

A workpiece upper heating unit 65 is disposed on the middle plate 5 at the workpiece upper heating position H. In the workpiece upper heating unit 65, a heating coil portion for heating the solid stem shaft portion Ws and a heating coil portion for heating the hollow stem shaft portion Ws are provided above the intermittent rotation table 61. Depending on the workpiece W, it can be selectively mounted at different heights.
At the fifth station E and the workpiece upper heating position H, workpiece upper lifters 63 and 64 for moving the workpiece W up and down are provided on the base portion 4 respectively.

  In the workpiece upper heat treatment section 60, when the workpiece W is transferred to the fifth station E by the first gantry 21, the workpiece W is received by the workpiece gantry 21 by the lowering of the first gantry 21 and the vertical movement of the workpiece upper lifter 63. 61h. The workpiece is transferred to the workpiece upper heating position H by the intermittent rotation table 61, and the workpiece W is raised to the heating coil portion corresponding to the stem axis Ws by the workpiece upper lifter 64 to perform the heat treatment. When the workpiece is lowered at the workpiece upper heating position H and placed on the workpiece upper receiving tool 61h, the cooling liquid is injected from the annular cooling jacket 62 to start cooling. While the cooling is continued, the workpiece is transferred to the workpiece upper cooling position I by the intermittent rotation table 61, and the cooling is continued for a predetermined time at this position to finish the cooling. Thereafter, the workpiece W is returned to the fifth station E again by the intermittent rotation table 61.

  In the workpiece upper heat treatment section 60, the workpiece upper receiving tool 61h of the intermittent rotary table 61, the heating coil section corresponding to the stem axis Ws, the workpiece upper lifters 63, 64, etc. are exchanged according to the workpiece W, Maintenance to adjust the position is possible.

[Aftercool processing section]
The aftercool processing unit 70 includes a reversing table 71 that is intermittently driven by half rotation, and the positions at which the rotation of the reversing table 71 stops are the sixth station F and the aftercooling position J.
The work W transferred by the second gantry 22 is placed on the reversing table 71 at the sixth station, transferred to the aftercooling position J by the reversing table 71, and the coolant or gas is sprayed onto the work W at the aftercooling position J. Then, the heat remaining on the workpiece W is released and moved to the sixth station F again.
The workpiece W that has been heat-treated can be taken out from the sixth station F to the outside.

[Cover structure]
In the heat treatment apparatus 1 of this embodiment, as shown in FIGS. 3 to 6, the entire front side is covered with the front cover 100, the entire back side is covered with the back cover 101, and both side surfaces are entirely covered with the side covers 102, By being covered with 103, the entire circumference of the side periphery is covered with various covers.

[Front cover]
As shown in FIG. 3, the front cover 100 includes an upper cover 111 that covers the upper part of the base part 4 from the front side, and a lower cover 113 that covers the lower part of the middle plate 5 of the base part 4.
As shown in FIGS. 7A, 7B, and 8, the upper cover 111 includes a plurality of upper opening / closing doors 112, and each upper opening / closing door 112 is linearly arranged on the frame 3 along the conveyance axis L. The sliding door is slidably supported by the upper door 115 for the door and the lower rail 116 for the door.

As shown in FIGS. 9 to 11, the upper / lower door rail 115 has a mountain shape protruding upward and is fixed to the upper frame 3 a disposed on the front side of the top of the frame 3. Here, the two upper door rails 115 are arranged in parallel to each other, and the inner upper door rail 115 near the heat treatment line 2 is positioned higher than the outer upper door rail 115. Yes.
In this embodiment, an upper auxiliary rail 119 made of a flat plate member is fixedly provided obliquely below each upper door 115 for doors, and the top of the upper rail 115 for doors and the lower surface of the upper auxiliary rail 119 are provided. The relative position is substantially constant over the entire length.

The lower door 116 for the door is formed in a flat plate shape, and the side edges of the lower door base 121 for the door that is fixed near the front end of the base portion 4 are faced upward. It is installed with. Here, the two lower rails 116 for doors are arrange | positioned in parallel and mutually at the same height. Further, a lower auxiliary plate 123 protrudes upward at an intermediate position between the two lower door door rails 116 and is arranged in parallel with the lower door door rails 116, and the base portion 4 has two lower door doors. An outer frame plate 124 is disposed along the rail 116 and the lower auxiliary plate 123 so as to protrude upward.
In this embodiment, the horizontal position of each upper door 115 for each door and the lower rail 116 for each door is the same position, that is, a position overlapping in the vertical direction, but one is in front of the other. It may be arranged on the side.

Each upper opening / closing door 112 has substantially the same width and is formed in substantially the same vertical cross-sectional shape, and the vertical cross-sectional outer shape is substantially constant over the entire width, and is near the front side end of the base portion 4. It has a three-dimensional shape having an upper opening / closing door lower edge portion 125 and an overhang portion 126 bulging outward from the front side end of the base portion 4 above the upper opening / closing door lower edge portion 125.
Each upper opening / closing door 112 is provided with a window portion 112a made of a transparent material having heat resistance at the center position of the overhang portion 126, and a heat treatment line can be visually recognized through the window portion 112a.

On the upper end side of each upper opening / closing door 112, upper slide support portions 131 for slidably supporting each upper opening / closing door 112 to the upper door 115 for opening / closing doors are provided at two places in the width direction.
The upper slide support 131 is mounted on an upper door 132 that can roll on the upper rail 115 for the door, and an upper adjustment bracket 133 that rolls in contact with the lower surface of the upper auxiliary rail 119 from below. A cam follower 134 is provided. By mounting the upper door 115 for the door and the upper auxiliary rail 119 between the upper door 132 and the upper cam follower 134 from the upper and lower sides, the upper door 112 is moved from the upper door 115 during the sliding operation. It prevents it from coming off.

On the lower end side of each upper door 112, lower slide support portions 136 for slidably supporting the door door 116 are provided at two locations in the width direction.
The lower slide support part 136 is mounted via a height adjustment part 137 and can be moved on the lower rail 116 for the door and the lower bracket 135 which can adjust the downward projecting amount from the upper door 112. A lower door wheel 138 mounted on the lower bracket 135 and a lower cam follower 139 that rolls in contact with a side surface of the lower rail 116 for the doors from the side. Here, the lower cam follower 139 abuts on the side surface of the lower door 116 for the door and rotates to prevent the lower cam follower 139 from coming off from the lower rail 116 for the door while the upper door 112 is sliding. . In addition, the side surface of the lower end side of each upper opening-and-closing door 112 may be in contact with the lower auxiliary plate 123 so that sliding is possible.

  On the upper door 112, a handle 141 for opening and closing the upper door 112 is further provided on the inclined surface below the overhang portion 126 for each upper door 112. The handle 141 is formed in a substantially L shape from a pipe-like material, and is arranged so as not to protrude outward from the outer shape of the overhang portion 126 in plan view. Specifically, the distance from the outer surface of the lower edge portion 125 of the upper door to the tip of the handle 141 is such that the outer surface of the upper door lower edge portion 125 and the outermost surface of the overhang portion 126 bulge out. The horizontal distance between is below.

  In such an upper cover 111, as shown in FIG. 2, the entire front side of the heat treatment line 1 is covered by four upper doors 112, and each upper door 112 from the left end to the right end in a front view is shown. Accordingly, the first and second sections A and B, the third section C and the workpiece lower heating position G, the fourth section D and the workpiece upper heating position H, and the workpiece upper cooling position I and the sixth section F are separated. The upper door 112 is covered.

  In the heat treatment line 1, there is a portion that protrudes near the front edge of the base portion 4 or at the front side of the base portion 4 at all times or during operation, and such a protruding portion is an overhang portion when the upper door 112 is closed. 126. For example, as shown in FIG. 2, a part of the rotating chuck mechanism 52 of the workpiece lower heat treatment section 50 passes near the front edge of the base section 4 during operation, and as shown in FIG. The first gantry 21 and the second gantry 22 always protrude to the near side from the front end edge of the base portion 4, but are covered by the overhang portion 126 without hindering these operations.

[Bottom cover]
In the heat treatment apparatus 1 of the present embodiment, as shown in FIG. 3, a lower cover 113 that covers the inside of the base portion 4 from the front side is provided at a position below the middle plate 5 of the base portion 4. The lower cover 113 includes four kendon-type doors 145 and is detachably attached to openings between the plurality of vertical columns of the base portion 4. By removing the scissors-type door 145 from the base part 4, the inside of the base part 4 is exposed.

[Back cover and side cover]
On the back side of the heat treatment apparatus 1, as shown in FIG. 2, for example, a primary water introduction part 201 for cooling liquid water and a return water collecting part 161 for collecting the cooling liquid used in the heat treatment line 2, A cooling liquid supply / recovery unit 160 in which the power supply is disposed, a power supply unit 170 in which a transformer and the like are disposed, a switchboard 180, and the like are provided. And as shown in FIG. 4, the back side is covered with the back cover 101, and the back door 105 which can be opened and closed for every part is provided.

  On the other hand, both side surfaces of the heat treatment apparatus 1 are covered with side covers 102 and 103 as shown in FIGS. Side opening / closing doors 106 that can be opened and closed are provided on the side of the heat treatment line 2 of the side covers 102 and 103, on the side of the lower base portion 4, and on the side of the coolant supply / recovery unit 160. Further, the side cover 102 is provided with a work W carry-in port 102a at a position corresponding to the first station A, and the side cover 103 is provided with a work W carry-out port 103a at a position corresponding to the sixth station F. ing.

[Inside the base]
Various members for operating the heat treatment line 2 are disposed in the base portion 4. As shown in FIG. 1, for example, reciprocating rotation means 53 for reciprocating the operation of rotating the two rotating chuck mechanisms 52 half a half intermittently is disposed at a position corresponding to the workpiece lower heat treatment section 50 and in the vicinity thereof. An intermittent rotation means 61e for intermittently rotating the intermittent rotary table 61 is disposed at a position corresponding to the workpiece upper heat treatment section 60 and in the vicinity thereof, and workpiece upper lifters 63 and 64 are provided. Lifter driving means for driving up and down is provided.

  A large number of wires and pipes are provided in the base portion 4. As shown in FIG. 12, the coolant is supplied to the workpiece lower heat treatment portion 50, the workpiece upper heat treatment portion 60, etc. The liquid supply path 200 for collecting the liquid is disposed at a predetermined position by a hard piping member.

As shown in FIGS. 12 and 13, the liquid supply path 200 includes a primary side introduction unit 201 to which a coolant from a coolant source is supplied to a lower part on the back side of the frame 3, and a work lower part from the primary side introduction unit 201 The coolant is appropriately branched so as to divide the coolant into the heat treatment section 50, the workpiece upper heat treatment section 60, the aftercool treatment section 70, and the like, and is arranged along the bottom of the base section 4 up to the vicinity of the front side end of the base section 4. A plurality of bottom liquid supply paths 202, a plurality of rising pipes 203 provided so as to continuously rise from the bottom liquid supply path 202 on the front side of the base part 4, and a rising pipe 203 continuous on the front side of the base part 4. And a plurality of top liquid supply passages 204 disposed along the top back side of the base portion 4 to positions near the processing units 50, 60, 70, and the like.
The base portion 4 has a structure in which a middle plate 5 is disposed on a base frame 4a made of a shape steel such as a C shape, an L shape, or an H shape. Therefore, the arrangement height of the bottom liquid supply path 202 and the top liquid supply path 204 is arranged within the height range of the shape steel of the base frame 4a arranged in a substantially horizontal direction, and appropriately penetrates the shape steel of the base frame 4a. It is preferable to be arranged.

Each of the plurality of rising pipes 203 is provided with a flow adjusting unit 205 such as a valve for adjusting the flow state of the coolant at the same height. Here, the flow state is, for example, the flow rate or the fluid pressure of the coolant, and the flow adjusting unit 205 is a lever or a handle for manually adjusting them. A flow meter is preferably provided in the vicinity of the flow adjusting unit 205.
In this embodiment, a plurality of flow control units 205 are arranged near the front positions of the processing units 50, 60, 70, etc., to which the cooling liquid is supplied by the liquid supply path 200 provided with the flow control units 205. .

[maintenance]
In this heat treatment apparatus 1, various maintenance is necessary as needed in the heat treatment line 2 on the base portion 4 and in each portion in the base portion 4. When the work W is changed, the size of the work W and the cup portion in each portion are changed. Maintenance according to the shape of Wc, hollow or solid stem shaft W is performed. For example, at the heating position G of the workpiece lower heat treatment section 50, the lowering position of the rotary chuck mechanism 52 and the opening / closing amount of the chuck are adjusted, and the heating coil section and the coolant injection section of the workpiece lower heat treatment head 56 are exchanged and adjusted. Further, at the heating position H of the workpiece upper heat treatment section 60, the heating coil section is exchanged or adjusted according to the stem axis Ws, or the positions of the workpiece upper lifters 63 and 64 are adjusted.

When such various maintenance operations are performed from the front side, the upper door 112 corresponding to each maintenance part and the vertical door 145 of the lower cover 113 are opened so that the operator can put the hand on the base part or in the base part. And maintenance tools by inserting tools.
After the maintenance work, the opened upper door 112 or the saddle type door 145 is closed, the heat treatment line 2 is operated, and the heat treatment of the workpiece W can be performed.

[Effect of the embodiment]
According to the heat treatment apparatus 1 as described above, the heating position G of the workpiece lower heat treatment section 50, the heating position H of the workpiece upper heat treatment section 60, the aftercool position J of the aftercool treatment section 70, and the transport mechanism 80 are combined with the base section. Since the heat treatment line 2 is provided so as to be arranged at different distances from the front end of the front side 4, the positions G, H, J, etc. and the transport mechanism 80 are arranged so as to overlap each other from the front side. can do. Therefore, the width of the heat treatment apparatus 1 can be narrowed to achieve a compact size.

  On the other hand, in the heat treatment apparatus 1 having such an arrangement, since the depth from the front side end portion tends to be deep, the heating position G of the work lower heat treatment section 50, the heating position H of the work upper heat treatment section 60, and the aftercool treatment section. Each maintenance site such as 70 aftercool positions J is likely to be far from the front side end.

  However, in the heat treatment apparatus 1, the upper opening / closing door 112 of the front cover 100 has an upper opening / closing door lower edge 125 disposed in the vicinity of the front side end of the base portion 4, and the upper opening / closing door lower edge 125. Since each part of the heat treatment line 2 is covered with the overhang portion 126, the operator opens the upper door 112 so that the operator can open the front side end portion of the base portion 4. The operator can easily approach each maintenance site such as the heating position G of the workpiece lower heat treatment section 50, the heating position H of the workpiece upper heat treatment section 60, and the aftercool position J of the aftercool treatment section 70. Work. Therefore, maintenance work is easy.

  In this heat treatment apparatus 1, each upper opening / closing door 112 has substantially the same vertical cross-sectional shape, and a predetermined overhang portion 126 is provided over the entire width of each upper opening / closing door 112. Any of these can easily slide and pass the front position of the portion protruding to the front side of the processing line 2. In addition, since the plurality of upper doors 112 can be arranged inside and outside each other, the upper door 112 can be widely opened at various positions in the heat treatment line 2 and it is easy to secure a good maintenance operation.

  In the heat treatment apparatus 1, the upper door 115 for the door and the lower rail 116 for the door are disposed upward, and the upper door 112 can roll on the upper rail 115 for the door and the lower rail 116 for the door. Since it has the upper door 132 and the lower door 138 and is slidably supported by the rails 115 and 116, it can be opened and closed smoothly with a small resistance during opening and closing, and the operability of the upper door 112 is good. . In particular, the upper door carriage 132 and the upper cam follower 134 hold the upper door 115 for the door and the upper auxiliary rail 119 substantially from above and below, and the lower cam follower 139 rolls in contact with the side surface of the lower rail 116 for the door. Therefore, even if the center of gravity is eccentric with respect to the upper door 115 for the door and the lower rail 116 for the door because the upper door 112 has the overhang portion 126, the opening / closing door is smoothly opened and closed with a small resistance. be able to.

  In this heat treatment apparatus 1, a handle 141 for opening and closing the upper door 112 is provided on the upper door 112 so as to protrude below the overhang portion 126, and the handle 141 is disposed so as not to protrude outward from the overhang portion 126. Therefore, even if the handle 141 is provided so as to protrude greatly on the surface of the upper opening / closing door 112 and the operability is improved, it does not protrude from the overhang portion 126 and become an obstacle.

  The heat treatment apparatus 1 includes a plurality of liquid supply paths 200 for supplying a cooling liquid to a plurality of locations of the heat treatment line 2 inside the base portion 4 covered with the lower cover 113, and the plurality of liquid supply paths 200 include Each of the flow adjusting portions 205 has a flow adjusting portion 205, and each flow adjusting portion 205 is disposed in the vicinity of the front side end portion inside the base portion 4 covered with the lower cover 113. The flow state of the plurality of liquid supply paths 200 can be easily adjusted, and the maintainability is good.

  In the heat treatment apparatus 1, a plurality of liquid supply paths 200 are arranged from the primary side introduction part 201 to the front side along the bottom part of the base part 4, and the flow adjusting part 205 is located at a position rising on the front side of the base part 4. Since the heat treatment lines 2 are arranged along the top back surface side of the base portion 4, the front surface of the base portion 4 can be obtained even if the flow control portions 205 are arranged on the front side of the base portion 4. It can arrange | position along the side and the top back surface side of the base part 4, the space in the base part 4 can be ensured widely, and size reduction can be achieved by utilizing the inside of the base part 4 effectively.

  In this heat treatment apparatus 1, each flow adjusting unit 205 is arranged near the front position of the workpiece lower heat treatment unit 50, the workpiece upper heat treatment unit 60, the aftercool treatment unit 70, and the like to which the cooling liquid is supplied through each liquid supply path 200. Therefore, the operator can easily recognize the portion adjusted by each flow adjusting unit 205, and the adjustment work of the coolant supplied to each unit can be easily performed.

  The above-described embodiment can be appropriately changed within the scope of the present invention. For example, in the above description, the heat treatment apparatus for the constant velocity joint has been described. However, the heat treatment apparatus for other members may be used, and the present invention can be applied to an apparatus for performing a process other than the heat treatment.

DESCRIPTION OF SYMBOLS 1 Heat processing apparatus 2 Heat processing line 3 Frame 3a Upper frame 4 Base part 5 Middle plate 10 Table type conveyance mechanism 11 Temporary phase determination table 12 This phase determination table 13 Transfer table 15 Lower conveyance rails 16 and 17 First and second air cylinders 20 Gantry type transport mechanisms 21, 22 First and second gantry 24 Ceiling rails 25, 26 Third and fourth air cylinders 30 Temporary phasing unit 40 Main phasing unit 44 Lift chuck mechanism 50 Workpiece lower heat treatment unit 52 Rotating chuck mechanism 53 Reciprocating rotation means 53a Workpiece lower rotating shaft 56 Workpiece lower heat treatment head 60 Work upper heat treatment section 61 Intermittent rotation table 61c Work upper rotation shaft 61g Intermittent rotation means 61h Work upper receiving device 62 Annular cooling jacket 63, 64 Workpiece lifter 65 Workpiece lifter Unit 70 After-cool processing unit 71 Reversing table 80 Transfer mechanism 100 Front cover 101 Rear cover 102, 103 Side cover 102a Carry-in port 103a Carry-out port 105 Rear open / close door 106 Side open / close door 111 Upper cover 112 Upper open / close door 112a Window 113 Lower cover 115 Opening and closing door upper rail 115a Convex 116 Opening and closing door lower rail 119 Upper auxiliary rail 121 Opening and closing door lower rail base 123 Lower auxiliary plate 124 Outer frame plate 125 Upper opening and closing door lower edge 126 Overhang portion 131 Upper slide support portion 132 Upper door 133 Upper adjustment bracket 134 Upper cam follower 136 Lower slide support part 137 Height adjustment part 138 Lower door wheel 139 Lower cam follower 141 Handle 145 Trap door 160 Coolant supply / recovery part 161 Return water collection part 170 Power supply part 1 80 Switchboard 200 Liquid supply path 201 Primary side introduction part 202 Bottom liquid supply path 203 Rising pipe 204 Top liquid supply path 205 Flow control part A 1st station B 2nd station C 3rd station D 4th station E 5th station F 1st 6 Station G Workpiece lower heating position H Workpiece upper heating position I Workpiece upper cooling position L Transfer axis W Workpiece Wc Cup part Ws Stem shaft part

Claims (7)

A processing line including a transport mechanism for transporting the workpiece and a processing section for processing the workpiece is disposed on the base portion of the frame, and the transport mechanism and the processing portion are at a distance from the front side end of the base portion. Is a processing apparatus in which the front side of the frame is covered with a front cover, which are arranged at positions that overlap in the front-rear direction so as to be different from each other,
The front cover includes an upper door that covers the base portion,
The upper opening / closing door is provided so as to bulge outward from the front side end portion of the base portion at a lower edge portion disposed in the vicinity of the front side end portion of the base portion and at a position above the lower edge portion. A processing apparatus with a cover, wherein the overhanging portion covers a protruding portion that protrudes to the most front side of the processing line.   The process with a cover according to claim 1, wherein the cover part includes a plurality of the upper opening / closing doors made of sliding doors, and each upper opening / closing door is provided with the overhanging part having a longitudinal section having substantially the same shape over the entire width. apparatus.   The upper and lower door rails are arranged upward on the front side of the frame, and roll on the upper and lower door rails above and below the upper door, respectively. The processing apparatus with a cover according to claim 2, further comprising a rotatable body, wherein the upper door is slidably supported by the upper rail for the door and the lower rail for the door.   The handle according to any one of claims 1 to 3, wherein a handle for opening and closing the upper opening / closing door protrudes from a position below the overhang portion, and the handle is disposed so as not to protrude outward from the overhang portion. The processing apparatus with a cover according to 1.   The processing apparatus with a cover according to claim 1, wherein the processing line is a heat treatment line having a plurality of heat treatment units. The front cover includes an openable and closable lower cover that covers the inside of the base portion from the front side, and a plurality of liquids for supplying a predetermined liquid to a plurality of locations in the processing line inside the base portion covered by the lower cover. With a liquid supply path
Each of the plurality of liquid supply paths is provided with a flow adjustment unit for adjusting the flow state of the predetermined liquid, and the plurality of flow adjustment units are provided in the vicinity of the front side end of the base unit covered with the lower cover. The processing apparatus with a cover according to claim 1, which is arranged.   The processing apparatus with a cover according to claim 6, wherein each of the flow adjusting units is disposed near a front position of a portion to which the predetermined liquid is supplied by each of the liquid supply paths provided with the flow adjusting unit.

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