JP6212937B2 - Vacuum quenching equipment - Google Patents

Description

  The present invention relates to a vacuum quenching treatment facility, and more particularly, to a vacuum quenching treatment facility capable of flexibly changing the facility according to processing contents.

  Patent Document 1 discloses a plurality of carburizing chambers (vacuum heating chambers) arranged in the vertical direction, a vertical lift device that can move a processed product to these carburizing chambers, and a cooling chamber that cools the processed product after carburizing. A vacuum carburizing and quenching treatment facility integrally provided with is shown.

Special table 2013-504686

  However, in the above-mentioned conventional vacuum quenching treatment equipment, the specifications required for cooling during quenching vary depending on the type of processed product, and gas cooling may be appropriate, oil cooling or water cooling may be appropriate. is there. In vacuum carburizing and quenching, etc., it is necessary to change the carburizing temperature stepwise, the heating temperature stepwise, the heating and carburizing process sharing steps, etc., while maintaining productivity. It has been difficult for the above-mentioned conventional apparatus to flexibly meet such demands.

  Then, this invention solves such a subject, and it aims at providing the vacuum hardening processing equipment which can change equipment flexibly according to the processing content of vacuum hardening.

To achieve the above object, according to the first aspect of the present invention, a housing unit (1) whose both ends are open to a vacuum heating chamber (2A to 2F) and a transfer device (4) for taking a workpiece into and out of the vacuum heating chamber. A plurality of vacuum heating chambers (2A to 2F ) are provided in the longitudinal half of the housing unit (1) in the vertical direction in the housing unit (1). Connecting portions (11, 12 ) for connecting other housing units to each open portion in an airtight and detachable manner are provided, and a cooling chamber ( 5A ) is connected to one of the open portions as the other housing unit. At the same time, a transport unit (7) provided with a transport device (4) for putting a work in and out of the vacuum heating chamber (2A to 2F) as the other casing unit is connected to the other open portion .

In the first invention, since the cooling chamber is connected to the housing unit in an airtight and detachable manner, for example, by appropriately replacing the gas cooling chamber and the oil cooling chamber as the cooling chamber, the cooling chamber is connected to the housing unit. The workpiece after the heat treatment can be properly quenched. Moreover, it becomes possible to perform a quenching process more efficiently by connecting a preparation chamber and a cooling chamber through the conveyance unit which installed the conveying apparatus.

In the second aspect of the invention, the vacuum heating chamber (2A to 2C) and the transfer device (4) for taking a workpiece into and out of the vacuum heating chamber are housed in a housing unit (1A) that is open at both ends, and the housing In the unit (1A), a plurality of the vacuum heating chambers (2A to 2C) are provided in the longitudinal half of the unit in the vertical direction, and are hermetically and detachably attached to each open part of the housing unit (1A). Connecting portions (11, 12) for connecting other casing units as possible are provided to connect the cooling chamber (5) as the other casing unit to one open portion and to the other open portion. As one of the other housing units , one open portion of the housing unit (1B) having the same structure as the housing unit (1A) is connected, and the other opening portion of the housing unit (1B) having the same structure is connected to the other opening portion. Vacuum heating chamber of the housing unit (1B) having the same structure To 2A-2C) in the connecting conveyance unit with internally provided (7) a conveying apparatus for loading and unloading the workpiece (4).

  In this 3rd invention, it becomes possible to perform various hardening processes efficiently by connecting a housing | casing unit by 2 series.

In the third aspect of the invention, the cooling chamber (5) is connected to a vacuum exhaust pipe and a cooling gas supply pipe. In the fourth aspect of the invention, the cooling chamber (5) is provided with a stirring fan (52) on the indoor ceiling. In the fifth invention, the cooling chamber is an oil cooling chamber (6). In the sixth invention, a preparation chamber unit (8) provided with a preparation chamber (82) dedicated to charging is coupled to the opening of the other casing unit (7).
The reference numerals in the parentheses indicate the correspondence with specific means described in the embodiments described later.

  As described above, according to the vacuum quenching processing facility of the present invention, the facility can be flexibly changed according to the processing content of the vacuum quenching.

It is a schematic sectional drawing of the vacuum hardening equipment in 1st Embodiment of this invention. It is a schematic side view of a vertical lift. It is a schematic sectional drawing of the vacuum hardening equipment in 2nd Embodiment of this invention. It is a schematic sectional drawing of the vacuum hardening equipment in 3rd Embodiment of this invention. It is a schematic sectional drawing of the vacuum hardening equipment in 4th Embodiment of this invention. It is a schematic sectional drawing of the vacuum hardening equipment in 4th Embodiment of this invention.

  The embodiment described below is merely an example, and various design improvements made by those skilled in the art without departing from the gist of the present invention are also included in the scope of the present invention.

(First embodiment)
FIG. 1 shows an embodiment of the present invention. In FIG. 1 (1), in a case unit 1 which is closed at one end, a plurality of (three in this embodiment) vacuum heating chambers (hereinafter simply referred to as heating chambers) 2A to 2 in the vertical direction in the half in the longitudinal direction. 2C is provided, and a vertical lift 4 as a transfer device is installed in the remaining half of the open side of the housing unit 1. Each of the heating chambers 2A to 2C is provided with a heater so that the temperature in the heating chamber can be raised to a predetermined temperature, and a vacuum exhaust pipe is connected to each of the heating chambers 2A to 2C so that the heating chamber is predetermined. The vacuum level can be maintained. Furthermore, a carburizing gas supply pipe such as acetylene is connected to the heating chambers 2A to 2C so that carburizing treatment can be performed. The heating chambers 2A to 2C can be opened and closed on the side facing the vertical lift 4 by a gate valve (not shown).

  The vertical lift 4 has the same structure as that described in Patent Document 1 (Special Table 2013-504686). That is, as shown in FIG. 2, the vertical lift includes a pair of left and right chains 41, 42 erected in the vertical direction, and a horizontal platform 43 is attached to the chain 42. A gear mechanism 44 is provided on the platform 43, and the input side of the gear mechanism 44 is connected to the chain 41. On the platform 43, fork bodies 45 and 46 that are extendable in two stages in the lateral direction are disposed. These fork bodies 45 and 46 are connected to the output side of the gear mechanism 44 and driven to extend and contract. It is like that.

  For example, a plurality of workpieces are arranged in a planar shape on a grid-like tray and placed on the fork body 46. When the workpiece is conveyed in the vertical direction, both chains 41 and 42 are operated simultaneously to raise and lower the platform 43 to a position facing the predetermined heating chambers 2A to 2C. Thereafter, the chain 42 is stopped, only the chain 41 is operated, the forks 45, 46 are extended to the side via the gear mechanism 44, and the tray on which the workpiece is placed is inserted into the heating chambers 2A to 2C. Or the tray which mounted the workpiece | work after a process is taken out from heating chamber 2A-2C. The vertical lift 4 is not limited to the above structure, and other known structures can be adopted.

  In FIG. 1 (1), a vacuum flange 11 as a connecting portion is provided on the entire periphery of the open portion of the housing unit 1, and the open portion is used as another housing unit by a vacuum flange 51. The gas cooling chamber 5 is detachably connected. The gas cooling chamber 5 is connected to a vacuum exhaust pipe and a cooling gas supply pipe such as nitrogen. A stirring fan 52 is provided at the ceiling of the gas cooling chamber 5, and vacuum doors 53, 54 are provided on the chamber walls of the gas cooling chamber 5 on the side connected to the casing unit 1 and on the opposite side. Is provided. Note that the forks 45 and 46 (FIG. 2) of the vertical lift 4 can also extend into the gas cooling chamber 5 on the opposite side of the heating chambers 2A to 2C.

  With such a structure, by transporting the tray T on which the workpiece is placed by the vertical lift 4 along the path indicated by the arrow in FIG. 1 (1), the workpiece is heated or carburized in the heating chambers 2A to 2C. Gas quenching can be performed in the gas cooling chamber 5.

  Here, when the cooling capacity is insufficient in the gas quenching, the gas cooling chamber 5 is separated from the housing unit 1, and instead of this, the oil cooling chamber 6 is replaced by a vacuum flange 61 as shown in FIG. Are connected. In the oil cooling chamber 6, an oil tank 63 having a stirring fan 62 on the bottom wall and an elevating device 64 for immersing the tray T supplied from the heating chambers 2 </ b> A to 2 </ b> C in the oil tank 63 are provided. Vacuum doors 65 and 66 are provided on the chamber wall on the side where the oil cooling chamber 6 is connected to the casing unit 1 and on the opposite side.

  With such a structure, by transferring the workpiece along the path indicated by the arrow in FIG. 1 (2), the workpiece is oil-quenched in the oil cooling chamber 6 after heating or carburizing in the heating chambers 2A to 2C. Can do.

(Second embodiment)
In the present embodiment, as shown in FIG. 3 (1), the housing unit 1 having the same structure as that of the first embodiment is open at both ends, and the other opening unit is provided at one open portion as the first embodiment. The same gas cooling chamber 5A is detachably connected by vacuum flanges 11 and 51, and the transport unit 7 is detachably connected to the other open part by vacuum flanges 12 and 71 as other housing units. The transport unit 7 is provided with a vertical lift 4 similar to that of the first embodiment in a casing 73 open at both ends, and vacuum flanges 71 and 72 are provided on the periphery of the open portion at both ends, respectively. A gas cooling chamber 5B similar to the gas cooling chamber 5A is connected to the other opening of the transfer unit 7 by vacuum flanges 72 and 51. In the present embodiment, six heating chambers 2A to 2F in the housing unit 1 are provided in the vertical direction.

  In the present embodiment, since the gas cooling chambers 5A and 5B are arranged on both sides of the housing unit 1, as shown by the arrows in FIG. 3 (1), the heating chambers 2A to 2F are heated or carburized. The work can be efficiently quenched by using the gas cooling chambers 5A and 5B on both sides simultaneously.

  Here, instead of one gas cooling chamber 5B, as shown in FIG. 3B, if the oil cooling chamber 6 having the same structure as that of the first embodiment is connected by vacuum flanges 72 and 61, FIG. 2) By transporting the tray T on which the workpiece is placed along the path indicated by the arrow, after the heating or carburizing treatment in the heating chambers 2A to 2F, the gas quenching in the gas cooling chamber 5A or the oil as necessary. Oil quenching in the cooling chamber 6 can be selected and performed quickly.

(Third embodiment)
In the present embodiment, as shown in FIG. 4, a gas cooling chamber 5 as another casing unit is connected to one of the casing units 1A having both ends open similar to the second embodiment by vacuum flanges 11 and 51. The other of the housing unit 1A is connected to a housing unit 1B having the same structure as that of the housing unit 1A as another housing unit, with heating chambers 2A to 2C and a vertical lift 4 provided therein, by vacuum flanges 11 and 21. To do. The housing unit 1B is further connected to the other open portion by a vacuum flange 12, 71, which is the same transport unit 7 as that of the second embodiment as another housing unit. 81, the preparation chamber unit 8 provided with the preparation chamber 82 dedicated to charging is coupled. In the present embodiment, the heating chambers 2A to 2C of the housing unit 1B are used only for heating, and the heating chambers 2A to 2C of the housing unit 1A are used for carburization.

  According to such a structure, the tray T loaded with the work placed in the preparation chamber 82 is conveyed in one-way direction without backflowing from one to the other along the path indicated by the arrow in FIG. Further, by separating the heating chamber process into heating (casing unit 1B side) and carburizing (casing unit 1A side), it is possible to efficiently carry out the carburizing and gas quenching processes from heating the workpiece.

(Fourth embodiment)
In the equipment of this embodiment shown in FIG. 5, instead of the preparation chamber unit 8 of FIG. 4 in the third embodiment, the oil cooling chamber 6 similar to that of the first embodiment is connected to the transport unit 7 by vacuum flanges 72 and 61. It is. Other structures are the same as those of the third embodiment.

  According to such a structure, the workpiece heated or carburized in the heating chambers 2A to 2C of the housing unit 1B is subjected to oil quenching in the oil cooling chamber 6 by the path indicated by the arrow in FIG. At the same time, the workpiece heated or carburized in the heating chambers 2A to 2C of the housing unit 1A can be gas-quenched in the gas cooling chamber 5, and the workpiece can be efficiently quenched.

  In this equipment, the heating chambers 2A to 2C of the housing units 1A and 1B are set to different temperatures, for example, the heating chambers 2A to 2C of the housing unit 1B are 600 ° C., and the heating chambers 2A to 2C of the housing unit 1A are 1000 ° C. After the workpiece passed through the oil cooling chamber 6 through the path indicated by the arrow in FIG. 5 (2) is sequentially heated to different temperatures in the casing unit 1B and the casing unit 1A, The gas quenching process can be efficiently performed in one way.

  Further, in this facility, the heating chambers 2A to 2B of the housing unit 1A are used for heating, and the heating chambers 2A to 2C of the housing unit 1B are used for carburization. The work that has passed through the gas cooling chamber 5 is heat-treated in the housing unit 1A, then carburized in the housing unit 1B, and the oil quenching in the oil cooling chamber 6 is efficiently performed in one way. Can do.

  DESCRIPTION OF SYMBOLS 1,1A ... casing unit, 1B ... casing unit (other casing units), 11 ... vacuum flange (connection part), 2A, 2B, 2C, 2D, 2E, 2F ... vacuum heating chamber, 4 ... vertical lift (Transport device), 5, 5A... Gas cooling chamber (other casing unit), 7... Transport unit (other casing unit).

Claims (6)

A vacuum heating chamber and a transfer device for taking a workpiece into and out of the vacuum heating chamber are housed in a housing unit that is open at both ends. A vacuum heating chamber is provided, and each open part of the case unit is provided with a connecting part for connecting another case unit in an airtight and detachable manner, and the other case is provided in one open part. A vacuum quenching treatment facility in which a cooling unit is connected as a unit, and a transfer unit is provided in the other open portion, which is provided with a transfer device for taking a workpiece into and out of the vacuum heating chamber as the other casing unit . A vacuum heating chamber and a transfer device for taking a workpiece into and out of the vacuum heating chamber are housed in a housing unit that is open at both ends. A vacuum heating chamber is provided, and each open part of the case unit is provided with a connecting part for connecting another case unit in an airtight and detachable manner, and the other case is provided in one open part. A cooling chamber is connected as a unit, and one open part of a case unit having the same structure as the case unit is connected to the other open part as the other case unit, and the other side of the case unit having the same structure is connected. A vacuum quenching treatment facility in which a transfer unit having a transfer device for loading and unloading a workpiece into and out of the vacuum heating chamber of the housing unit having the same structure is connected to the open portion . The vacuum quenching treatment facility according to claim 1 or 2 , wherein a vacuum exhaust pipe and a cooling gas supply pipe are connected to the cooling chamber. The vacuum quenching processing facility according to claim 3 , wherein the cooling chamber is provided with a stirring fan in an indoor ceiling. The vacuum quenching processing facility according to claim 1 or 2 , wherein the cooling chamber is an oil cooling chamber. The vacuum hardening processing facility according to any one of claims 2 to 5 , wherein a preparation chamber unit provided with a preparation chamber dedicated to charging is coupled to the opening of the other casing unit.

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