JP6424753B2 - Method of manufacturing object to be heated and heating apparatus - Google Patents

Description

  The present invention relates to a method of manufacturing a body to be heated using a heating device having a constantly open heating space, and a heating device suitable for such a manufacturing method.

  Conventionally, as a heating device of this type, for example, the one described in Patent Document 1 has been proposed. In this heating device, the front end side is an opening that is always open for taking in and out the object to be heated, and the rear end side is provided with a box-like heating space closed by a back wall.

  Moreover, this heating apparatus is equipped with the conveyance jig which performs insertion and collection | recovery with respect to heating space. The conveyance jig has a plate shape in which one of the upper and lower plate surfaces is the upper surface and the other is the lower surface, and a heating object such as an electronic component is mounted on at least one of the upper and lower plate surfaces. Insertion and recovery.

  And although the heating process of a to-be-heated body is performed using such a heating apparatus, the heating process is as follows. The conveyance jig on which the body to be heated is mounted directs the upper surface and the lower surface of the conveyance jig upward and downward respectively, and heats from the opening while bringing the left and right end parts into contact with the left and right inner walls of the heating space. In the inserted state, the object to be heated is heated in the inserted state.

  Moreover, the conventional heating apparatus as described in this patent document 1 has a door which opens and closes the opening part by the side of the front end of heating space normally. That is, when the object to be heated is inserted into the heating space and heated, the heating space is closed by the door, and the inside of the heating space is maintained at an appropriate temperature.

Patent No. 5294607 (refer to Drawing 5)

  However, in recent years, for the reason that it is desirable to frequently carry the object to be heated into and out of the heating space, the above-described door has been omitted. In this case, the opening of the heating space is always open, and the inside of the heating space is always in communication with the outside air through the opening. Therefore, in this case, there is a concern that the outside air enters the heating space, in particular, the temperature drop near the opening.

  This point will be specifically described by taking a doorless heating device as a prototype examined by the present inventor shown in FIG. 8 as an example. The prototype shown in FIG. 8 has a heating space and a transfer jig according to the conventional general heating device except that the door is not provided.

  Here, the plate-like conveyance jig 10 mounts the body K1 on the upper surface 11 and is inserted into the heating space 21 from the opening 30 to heat the body K1. In this inserted state, the transport jig 10 has the upper surface 11 and the lower surface 12 directed upward and downward, respectively.

  Although not shown, in the inserted state, the left and right end portions of the transfer jig 10 are in contact with the left and right inner walls of the heating space 21. Typically, the left and right both end portions of the transfer jig 10 are inserted by being slid in a state of being fitted in the grooves provided on the left and right inner walls of the heating space 21.

  In addition, when inserting the transfer jig 10, the insertion tip 13 of the transfer jig 10 and the insertion tip 13 of the transfer jig 10 do not cause damage such as breakage caused by the insertion end 13 of the transfer jig 10 coming into contact with the back wall 24 of the heating space 21. The insertion is completed with the back wall 24 separated.

  Then, as shown in FIG. 8, in the insertion state in the heating step, since the left and right end portions of the transfer jig 10 are in contact with the left and right inner walls of the heating space 21, the space in the heating space 21 is The transfer jig 10 is divided up and down. Further, the upper and lower spaces are communicated by the gap on the back wall 24 side, and as a result, a U-shaped air passage 40 partitioned by the inner wall of the heating space 21 and the transport jig 10 is formed.

  Specifically, the air passage 40 has a first gap G1 between the upper surface 11 of the transfer jig 10 and the upper inner wall 31 of the heating space 21 opposite thereto, and the lower surface 12 of the transfer jig 10 A second gap G2 with the lower inner wall 32 of the heating space 21 facing this, and a third gap between the insertion tip 13 of the transfer jig 10 and the back wall 24 of the heating space 21. G3 is communicated, and the third gap G3 is configured as a U-turn portion.

  Then, as shown by the arrows in FIG. 8, in the heating step, the hot air in the heating space 21 flows out from the opening 30 at the first gap G1 side on the upper surface 11 side of the conveyance jig 10. To go. Further, along with this, cold outside air flows from the opening 30 into the heating space 21 at the second gap G2 side on the lower surface 12 side of the transfer jig 10.

  Such intrusion of the outside air into the heating space 21 may cause a temperature drop in the heating space 21, particularly a temperature in the vicinity of the opening 30, and the heat treatment of the body K 1 may be insufficient.

  It is possible to arrange the conveyance jig 10 deep in the heating space 21 by increasing the depth of the heating space 21 in response to such a problem, but this leads to an increase in the physical size of the apparatus and the like, which is not preferable.

  In addition, installation of a door or the like for shielding the opening 30 may be considered. However, since the door and the operation means of the door are provided, the mechanism becomes complicated and the same as the above-described conventional configuration with the door. It will not be possible to take advantage of the constant opening.

  The present invention has been made in view of the above problems, and it is an object of the present invention to use a heating device which heats by inserting a heating jig mounted with a heating object into a heating space from an opening which is always open. An object of the present invention is to suppress the intrusion of outside air into a heating space without increasing the depth of the heating space and installing a door for shielding the opening in the manufacturing method.

In order to achieve the above object, in the invention according to claim 1, a box-shaped heating space (21) in which the front end side is an opening (30) which is always open and the rear end side is closed by a back wall (24) )When,
The upper and lower plate surfaces are in the form of a plate having the upper surface (11) and the lower surface (12), and the body to be heated (K1) is mounted on at least one of the upper and lower plate surfaces. Using a heating device (S1) including a transport jig (10) for inserting and recovering the heating space;
The transfer jig on which the body to be heated is mounted directs the upper surface and the lower surface of the transfer jig upward and downward, and the left and right end portions (15, 16) are the inner walls (33, 34) of the heating space A method of manufacturing a heated body having a heating step of heating the body to be heated in the inserted state while being in contact with the opening portion while being inserted into the heating space;
In the state of insertion of the transport jig into the heating space in the heating step, the first gap (G1) between the upper surface of the transport jig and the upper inner wall (31) of the heating space opposite thereto is A second gap (G2) between the lower surface and the lower inner wall (32) of the heating space opposite to the lower space, and between the insertion tip (13) of the transfer jig and the back wall of the heating space The third gap (G3) is in communication, the third gap is a U-shaped portion having a U-turn portion, and an air passage (40) through which air flows is configured.
Heating is provided by providing a projection-like blocking portion (50) that blocks the flow of air in the air passage on at least one of the upper and lower inner walls of the heating space and the upper and lower surfaces of the transfer jig. The process is characterized in that the air flow in the air passage is given resistance.

  According to the present invention, the upper inner wall and the lower inner wall of the heating space located in the first gap and the second gap in the air passage, and at least one of the upper surface and the lower surface of the transport jig By providing the projection-like blocking portion, the air flow in the air passage is resisted and the air flow is delayed. Therefore, the circulation of the air in the air passage is suppressed, and the temperature decrease in the heating space can be suppressed.

  Therefore, according to the present invention, it is possible to suppress outside air intrusion into the heating space without increasing the depth of the heating space and installing a door for shielding the opening.

According to the third aspect of the invention, the box-like heating space (21) has an opening (30) whose front end is always open and whose rear end is closed by the back wall (24);
The upper and lower plate surfaces are in the form of a plate having the upper surface (11) and the lower surface (12), and the body to be heated (K1) is mounted on at least one of the upper and lower plate surfaces. A transport jig (10) for inserting and recovering the heating space;
The transfer jig on which the body to be heated is mounted directs the upper surface and the lower surface of the transfer jig upward and downward, and the left and right end portions (15, 16) are the inner walls (33, 34) of the heating space A heating device configured to heat the object to be heated in the inserted state, the heating device being inserted into the heating space from the opening,
In the insertion state of the conveyance jig into the heating space, the first gap (G1) between the upper surface of the conveyance jig and the upper inner wall (31) of the heating space opposite thereto, the lower surface of the conveyance jig and this A second gap (G2) with the lower inner wall (32) of the heating space opposite to the second space, and a third between the insertion tip (13) of the transfer jig and the back wall of the heating space The gap (G3) is communicated, the third gap is a U-shaped portion having a U-turn portion, and an air passage (40) through which air flows is configured.
At least one of the upper and lower inner walls of the heating space and the upper and lower surfaces of the transfer jig is provided with a projecting blocking portion (50) for blocking the flow of air in the air passage. It is characterized by

  According to this, it is possible to provide a manufacturing apparatus suitable for use in the manufacturing method of the first aspect. Therefore, also according to the present invention, it is possible to suppress outside air intrusion into the heating space without increasing the depth of the heating space and installing a door for shielding the opening.

  In addition, the code | symbol in the parenthesis of each means described in the claim and this column is an example which shows the correspondence with the specific means as described in embodiment mentioned later.

It is a schematic perspective view which shows the heating apparatus concerning 1st Embodiment of this invention. (A) is a schematic perspective view which shows the conveyance jig single-piece | unit in FIG. 1, (b) is a schematic sectional drawing which shows the conveyance jig in the state which mounted the to-be-heated body in FIG. It is a schematic sectional drawing which shows the heating space in the heating apparatus in FIG. It is a schematic sectional drawing in alignment with dashed-dotted line AA in FIG. It is a schematic sectional drawing which shows the inhibition part in the heating apparatus concerning 2nd Embodiment of this invention. (A)-(c) is a schematic sectional drawing which shows the variation of the arrangement | positioning position of the inhibition part as other embodiment of this invention. (A)-(c) is a schematic sectional drawing which shows the variation of the arrangement | positioning position of the inhibition part as other embodiment of this invention. It is a schematic sectional drawing which shows the heating apparatus without a door as a prototype which this inventor examined.

  Hereinafter, an embodiment of the present invention will be described based on the drawings. In the following embodiments, parts identical or equivalent to each other are denoted by the same reference numerals in the drawings in order to simplify the description.

First Embodiment
A heating device S1 according to a first embodiment of the present invention will be described with reference to FIGS. For example, when manufacturing various electronic devices mounted in vehicles, such as a car, this heating device S1 is applied as a thing for performing a heating process which heats heating object K1 such as electronic parts.

  S1 of the present embodiment largely relates to the heating furnace 20 having a plurality of heating spaces 21 for housing and heating the object K1, and transport for inserting and recovering the object K1 with respect to the heating space 21. And a jig 10.

  Although specific details of the heating furnace 20 including the heating space 21 (see FIG. 3 and FIG. 4) will be described later, the heating space 21 is a wall for heating or heat transfer, as roughly shown in FIG. 22, 23, 24, 25 are configured as a box-shaped space that is always open on the front side.

  And, as shown in FIG. 1, the plurality of heating spaces 21 constitute a lattice array arranged in the vertical direction and the horizontal direction. In FIG. 1, the plurality of heating spaces 21 form a 4 × 3 grid array of four in the vertical direction (that is, the vertical direction) and three in the lateral direction (that is, the horizontal direction).

  The conveyance jig 10 has the object to be heated K1 mounted thereon, is inserted into the heating space 21 together with the object to be heated K1, and is taken out and recovered after heating. Here, the object to be heated K1 may be an electronic component or the like requiring heating, and examples thereof include a sensor component, a mold component, various substrates, and the like.

  The insertion and the recovery of the transfer jig 10 are performed by a drive unit (not shown) or the like. Such a drive means includes, for example, an arm unit for holding the transport jig 10, a robot controlled by a computer, etc., and a control unit for controlling the movement of the arm unit. And conveyance jig 10 is insertable to heating space 21 with heating object K1, as shown by arrow Y1 in Drawing 1.

  The direction of the arrow Y1 is the insertion direction of the transport jig 10 into the heating space 21, and hereinafter, will be referred to simply as the insertion direction Y1. Furthermore, the insertion direction Y1 corresponds to the direction from the front side to the back side of the heating furnace 20, and the direction opposite to the insertion direction Y1 is the removal direction of the transfer jig 10.

  In addition, as shown in FIGS. 1 and 2, the transport jig 10 has a plate shape in which one of the upper and lower plate surfaces is the upper surface 11 and the other is the lower surface 12, and at least one of the upper and lower plate surfaces is covered. Insertion and recovery are performed with respect to the heating space 21 in a state where the heating body K1 is mounted. Such a transfer jig 10 is made of a metal plate or the like excellent in thermal conductivity such as Al.

  Further, as shown in FIGS. 1 and 2, in the transport jig 10, the end on the tip end side in the insertion direction Y1 is the insertion tip 13 and the end on the rear end is the insertion rear end 14 There is. Further, in the transport jig 10, the left end is a left end 15 and the right end is a right end 16 in the left-right direction orthogonal to both the insertion direction Y1 and the vertical direction.

  Here, the transport jig 10 is in the form of a rectangular plate whose longitudinal direction is the insertion direction Y1, and the side surfaces which become the short sides correspond to the insertion front end portion 13 and the insertion rear end portions 14 and become the long side surfaces. Corresponds to the left end 15 and the right end 16.

  And the fixing means which fixes the to-be-heated body K1 mounted in this conveyance jig 10 is provided. Here, as shown in FIGS. 1 and 2, the through hole 17 penetrating in the thickness direction of the transfer jig 10 is configured as a fixing means.

  The to-be-heated body K1 is mounted and fixed on the upper surface 11 of the transfer jig 10 by being inserted into the through hole 17 from the upper surface 11 side of the transfer jig 10. Here, the portion to be heated K 1 has a mushroom shape in which the diameter of the portion positioned on the upper surface 11 of the transport jig 10 is larger than that of the insertion portion into the through hole 17. And in the example of FIG. 1, FIG. 2, the six to-be-heated body K1 is mounted in the conveyance jig | tool 10. As shown in FIG.

  Next, the heating furnace 20 including the heating space 21 will be described more specifically with reference to FIGS. 1, 3 and 4. The heating furnace 20 keeps the entire plurality of heating spaces 21 constantly at a desired heating temperature. Then, after collecting the transfer jig 10 together with the heating target K1 in the heating space 21 where heating is completed, another transfer jig 10 on which the heating target K1 before heating is mounted is inserted.

  As shown in FIG. 1, the heating furnace 20 is an external shape divided by the heat insulating plates 26a, 26b, 26c and 26d, and is a rectangular parallelepiped box shape having a front side open and surrounded by the heat insulating plates 26a to 26d. I The heat insulating plate comprises an upper heat insulating plate 26a, a lower heat insulating plate 26b, a side heat insulating plate 26c, and a back heat insulating plate 26d (see FIG. 3), and is made of a normal heat insulating material excellent in heat resistance and heat insulation.

  The walls 22 to 25 are plates made of a metal such as Al excellent in thermal conductivity, and are vertically opposed to each other in the space surrounded by the heat insulating plates 26 a to 26 d in the heating furnace 20 at a distance. A plurality of first walls 22, a plurality of second walls 23 arranged in a shelf shape in the left-right direction with a distance between the first walls 22, and a back side of the heating furnace 20. It consists of a back wall 24 (see FIG. 3) as a three-walled body and a fourth wall 25 that covers the upper surface side and the lower surface side of the heating furnace 20.

  Thereby, as shown in FIG. 3, each heating space 21 is divided by the walls 22 to 25 so that the front side, that is, the front end side is an opening 30 which is always open, and the rear side, that is, the opening The rear end side opposite to 30 is configured as a box-like space closed by the back wall 24.

  Specifically, in the present embodiment, the heating space 21 is formed as a rectangular box-like space in which the front end side which is one end in the longitudinal direction is always open and the rear end side which is the other end is closed. Here, the opening 30 is for taking in and out the transport jig 10 on which the object to be heated K1 is mounted, and through the opening 30, insertion and recovery of the transport jig 10 into the heating space 21 is possible. It is supposed to be done.

  The inner wall configuration of the heating space 21 will be described with reference to FIGS. 3 and 4. In the box-like heating space 21, the upper inner wall 31 in the vertical direction is constituted by the upper second wall 23, and the lower inner wall 32 is constituted by the lower second wall 23.

  Further, as described above, the opposite side to the opening 30 is shielded by the back wall 24 as the third wall. As shown in FIG. 4, in the heating space 21, the left inner wall 33 in the left-right direction is constituted by the left first wall 22, and the right inner wall 34 is formed by the right first wall 22. Configured

  In the heating space 21 having such an inner wall configuration, holding grooves 28 are provided on the opposite left and right inner walls 33 and 34. The holding groove 28 supports the left and right end portions 15 and 16 of the conveyance jig 10 so as to be movable in the insertion direction Y1. Specifically, as shown in FIGS. 1, 3 and 4 The inner walls 33 and 34 on the left and right sides are formed as grooves extending along the insertion direction Y1.

  Then, when the conveyance jig 10 is inserted into the heating space 21, the conveyance jig 10 is slid while the left and right end parts 15 and 16 of the conveyance jig 10 are fitted into and held in contact with the holding grooves 28. , And will perform the insertion.

  Thereby, as shown in FIG. 3 and FIG. 4, the transfer jig 10 inserted in the heating space 21 directs the upper surface 11 and the lower surface 12 of the transfer jig 10 upward and downward, and both left and right ends 13, 14 are brought into contact with the left and right inner walls 33, 34 of the heating space 21. Then, in the heating step, heating of the body K1 is performed in this inserted state.

  Here, as shown in FIG. 1, an electric heater 27 is provided in a suitable place inside each of the above-mentioned walls 22 to 25, here, within the first wall 22. The electric heater 27 is for maintaining each heating space 21 in the heating furnace 20 at a desired heating temperature.

  And in a heating process, injection | throwing-in of the to-be-heated body K1 is performed by inserting the conveyance jig 10 which mounts the to-be-heated body K1 in the heating space 21 made into desired heating temperature. After the insertion of the conveyance jig 10 is completed, heating is performed for a predetermined time, and thereafter, the heated object K1 and the conveyance jig 10, which have been heated, are recovered from the heating space 21. Thus, the heating step of the present embodiment is performed.

  In the present embodiment, a method of manufacturing the object to be heated K1 including the heating device S1 and a heating step of the object to be heated K1 using the heating device S1 is provided, but in the embodiment, Furthermore, it has the following feature points.

  First, also in the present embodiment, as shown in FIG. 3, in the state where the conveyance jig 10 is inserted into the heating space 21, the U-shaped air passage 40 similar to that shown in FIG. 8 is heated. It is formed in the space 21.

  That is, the air passage 40 has a first gap G1 between the upper surface 11 of the transfer jig 10 and the upper inner wall 31 of the heating space 21 opposite thereto, and the lower surface 12 of the transfer jig 10 and heating opposite thereto. The second gap G2 between the lower inner wall 32 of the space 21 and the third gap G3 between the insertion tip 13 of the transfer jig 10 and the back wall 24 of the heating space 21 are In communication, the third gap G3 is formed into a U-shape having a U-turn portion.

  Further, in the present embodiment, at least one of the four surfaces of the upper inner wall 31 and the lower inner wall 32 in the heating space 21 and the upper surface 11 and the lower surface 12 of the transport jig 10 has a projecting inhibition portion 50 To provide

  That is, the inhibition portion 50 as a protrusion is located at at least one of the inner wall of the heating space 21 located in the first gap G1 and the second gap G2 and the plate surface of the transfer jig 10.

  Furthermore, the blocking portion 50 protrudes from the inner wall of the heating space 21 in the gaps G1 and G2 toward the plate surface of the transfer jig 10 facing this, or conversely, in the transfer jig 10 It projects from the plate surface toward the inner wall of the heating space 21 opposed thereto.

  Such a projecting blocking portion 50 blocks the air flow in the air passage 40. By providing the blocking portion 50, the air flow in the air passage 40 is given resistance, and the air circulation in the air passage 40 is performed. Will be suppressed.

  In the present embodiment, as shown in FIG. 3 and FIG. 4, the inhibition portion 50 is directed toward the lower surface 12 of the transfer jig 10 at the end of the inner wall 32 under the heating space 21 on the back wall 24 side. It is considered to be prominent. In addition, about the specific example of the other variation regarding the arrangement position of the inhibition part 50, it shows in below-mentioned FIG.6 and FIG.7 etc. FIG.

  Such an inhibition portion 50 may be made of a metal such as Al, and may be integrally formed with the lower inner wall 32 of the heating space 21, that is, the lower second wall 23, or by adhesion or screwing. It may be a separate one fixed to the lower inner wall 32.

  Further, the protrusion height of the inhibition portion 50 may be sufficient for inhibiting the air flow in the air passage 40 by narrowing the passage area of the air passage 40 by the inhibition portion 50. Further, as shown in FIG. 4, it is desirable that the inhibition portion 50 has a width equal to the width of the air passage 40 and be present in the entire width direction of the air passage 40. According to this, an excess gap does not exist in the width direction.

  As an ultimate form regarding the inhibition of the air flow, the inner wall or the conveyance jig of the heating space 21 in which the projecting tip end portion of the inhibiting portion 50 faces the inhibiting portion 50 in the first gap G1 or the second gap G2. By contacting the plate surface 10, the air flow in the air passage 40 is blocked.

  In the example of FIG. 3, FIG. 4, this ultimate form is employ | adopted. That is, in the second gap G2, the projecting tip end portion of the inhibition portion 50 contacts the lower surface 12 of the transfer jig 10 facing the inhibition portion 50, thereby blocking the air flow in the air passage 40.

  As described above, when the blocking portion 50 blocks the air flow in the air passage 40, the blocking effect given to the resistance of the air flow is maximally exhibited. That is, the air circulation of the air passage 40 is stopped by this shutoff.

  By the way, as described above, in the U-shaped air passage 40 as in this embodiment, the opening 30 in the first gap G1 on the upper surface 11 side of the transfer jig 10 is the air outlet, and The air circulates so that the opening 30 in the gap G2 of 2 is used as an air inlet and the third gap G3 is U-turned. The air flow in the air passage 40 causes a temperature drop in the heating space 21, particularly, a temperature drop in the vicinity of the opening 30.

  However, in the present embodiment, the upper inner wall 31 and the lower inner wall 32 of the heating space 21 located in the first gap G1 and the second gap G2 in the air passage 40, and further, the upper surface 11 of the transport jig 10. A projecting inhibition portion 50 is provided at at least one of the lower surface 12 and the lower surface 12.

  As a result, the air flow in the air passage 40 is resisted and the air flow is delayed, so the circulation of air in the air passage 40 is suppressed, and the temperature decrease in the heating space 21 is suppressed. Therefore, according to the present embodiment, it is possible to suppress the outside air intrusion into the heating space 21 without increasing the depth of the heating space 21 or installing a door for shielding the opening 30.

  In addition, if the projection-like inhibition portion 50 is provided in the third gap G3 between the insertion tip 13 of the conveyance jig 10 and the back wall 24 of the heating space 21, the conveyance jig 10 is disposed in the heating space 21. When inserted, the insertion tip 13 of the transfer jig 10 may hit the blocking portion 50 and be damaged.

  In that respect, in the present embodiment, at least one of the upper and lower inner walls 31 and 32 of the heating space 21 and the upper surface 11 and the lower surface 12 of the transfer jig 10, that is, the first gap G1 and the second gap G2. , The inhibition unit 50 is provided. As a result, when the transport jig 10 is inserted, it is easy to avoid that the insertion tip 13 hits the portion of the heating space 21 on the back wall 24 side.

Second Embodiment
The principal part of the heating apparatus according to the second embodiment of the present invention will be described with reference to FIG. The present embodiment is different from the first embodiment in the configuration of the inhibition unit 50, and the difference will be mainly described.

  In the first embodiment, as shown in FIG. 3 and FIG. 4, regarding the inhibition of the air flow in the air passage 40, the form is shown in which the inhibition portion 50 blocks the air flow. However, the inhibition of the air flow by the inhibiting unit 50 is not limited to the shielding of the air passage 40, as long as the air resistance is provided so as to exert the effect of inhibiting the air flow.

  That is, as long as the above-described inhibition effect is exhibited, some amount of space is formed between the protruding end of the inhibition portion 50 and the inner wall of the heating space 21 facing the inhibition portion 50 or the plate surface of the transfer jig 10. A gap may be provided.

  In the example of FIG. 5, in the second gap G2, the protruding tip end portion of the inhibition portion 50 is disposed with a gap without contacting the lower surface 12 of the transfer jig 10 facing the inhibition portion 50. . In this case, the narrow gap between the protruding end of the blocking portion 50 and the lower surface 12 of the transfer jig 10 increases the air resistance and exerts the blocking effect of the air flow.

(Other embodiments)
In addition, about the arrangement position of the inhibition part 50, it is not limited to the edge part by the side of the back wall 24 among the inner walls 32 below the heating space 21 like the said FIG. 3, but Fig.6 (a)-( c) Various variations as shown in FIGS. 7 (a) to 7 (c) can be employed. 6 and 7 show the same sectional direction as in FIG. 3, but in FIGS. 6 and 7, the heating target K1, the holding groove 28 and the back heat insulating plate 26d are not shown.

  First, in the example shown in FIG. 6A, the inhibition portion 50 is provided at the end portion of the upper inner wall 31 of the heating space 21 located in the first gap G1 on the back wall 24 side. It projects toward the upper surface 11. Then, the protruding tip end portion of the inhibition portion 50 of the present example contacts the upper surface 11 of the transfer jig 10 in the first gap G1 and blocks the air flow.

  In the example shown in FIG. 6B, the inhibition portion 50 is the lower surface 12 of the transfer jig 10 at a portion closer to the opening 30 in the inner wall 32 below the heating space 21 located in the second gap G2. It is supposed to project towards. Then, the protruding tip end portion of the inhibition portion 50 of this example contacts the lower surface 12 of the transfer jig 10 in the second gap G2 to block the air flow.

  In the example shown in FIG. 6C, the inhibition portion 50 is formed on the upper surface 11 of the transfer jig 10 at a portion closer to the opening 30 in the upper inner wall 31 of the heating space 21 located in the first gap G1. It is supposed to be projected towards. Then, the protruding tip end portion of the inhibition portion 50 of the present example contacts the upper surface 11 of the transfer jig 10 in the first gap G1 and blocks the air flow.

  In the example shown in FIG. 7A, two inhibition units 50 are provided. One inhibition portion 50 is provided to project toward the lower surface 12 of the transfer jig 10 on the inner wall 31 on the upper side of the heating space 21 located in the first gap G1.

  The other inhibition portion 50 is provided to project toward the lower surface 12 of the transfer jig 10 at the inner wall 32 below the heating space 21 located in the second gap G2. Then, the protruding tip end portion of the inhibition portion 50 in this example contacts the upper surface 11 and the lower surface 12 of the transfer jig 10 in the first gap G1 and the second gap G2, respectively, and blocks the air flow.

  As described above, in the examples of FIGS. 6A to 6C and 7A, the inhibition portion 50 is provided on the inner wall side of the heating space 21. That is, the inhibition portion 50 is fixed to the inner wall by adhesion, screwing or the like, or integrally formed with the inner wall.

  On the other hand, in the examples shown in FIGS. 7B and 7C, the inhibition portion 50 is provided on the side of the transfer jig 10. That is, the inhibition portion 50 in this case is fixed to the upper surface 11 or the lower surface 12 of the transfer jig 10 by adhesion, screwing or the like, or integrally formed with the inner wall, and inserted and recovered together with the transfer jig 10 It is.

  In the example shown in FIG. 7B, the inhibition portion 50 protrudes toward the lower inner wall 32 of the heating space 21 on the lower surface 12 of the transfer jig 10 located in the second gap G2. ing. Then, the protruding tip end portion of the inhibition portion 50 of the present example contacts the lower inner wall 32 of the heating space 21 in the second gap G2 to block the air flow.

  In the example shown in FIG. 7C, the inhibition portion 50 protrudes toward the upper inner wall 31 of the heating space 21 on the upper surface 11 of the transfer jig 10 located in the first gap G1. There is. Then, the protruding tip end portion of the inhibition portion 50 of the present example contacts the upper inner wall 31 of the heating space 21 in the first gap G1 to block the air flow.

  Furthermore, the inhibiting portions 50 may be provided at a plurality of places by appropriately combining the arrangement positions as shown in FIGS. 6 and 7. In each arrangement position, the blocking portion 50 may not block the air flow, but a gap may be provided on the projecting tip end side as shown in FIG.

  As described above, the inhibition portion 50 may be located at one or more of the inner wall of the heating space 21 located in the first gap G1 and the second gap G2 and the plate surface of the transfer jig 10. Arrangement positions other than those shown in FIGS. 6 and 7 are also possible. However, when determining the arrangement position of the inhibition portion 50, there is no interference between the object to be heated K1 mounted on the conveyance jig 10 and the inhibition portion 50 including the time of insertion and recovery of the conveyance jig 10 It is necessary to

  In the first embodiment, the heating furnace 20 has a plurality of heating spaces 21. However, the heating furnace 20 may have only one heating space 21.

  Moreover, in the said 1st Embodiment, although the to-be-heated body K1 was mounted in the upper surface 11 of the conveyance jig 10, you may be mounted in the lower surface 12 by changing a fixing means suitably, or the said It may be mounted on both the upper and lower sides. For example, when the body K1 is press-fit into the through hole 17 from the lower surface 12 side of the transfer jig 10 in FIG.

  Moreover, the to-be-heated body K1 mounted in the conveyance jig 10 may not be plural pieces, and may be one piece.

  Further, in the first embodiment, an example of the holding groove 28 has been described as a form in which the left and right end portions 15 and 16 of the transfer jig 10 are supported in contact with the left and right inner walls 33 and 34 of the heating space 21. Not limited to this. For example, a shelf may be provided which protrudes from the left and right inner walls 33 and 34 of the heating space 21, and the left and right end portions 15 and 16 of the transport jig 10 may be abutted and supported on the shelf.

  Moreover, this invention is not limited to above-described embodiment, In the range described in the claim, it can change suitably. Moreover, said each embodiment is not mutually unrelated and can be combined suitably unless the combination is obviously impossible, and said each embodiment is limited to said example of illustration. Absent. Further, in each of the above-described embodiments, it is needless to say that the elements constituting the embodiment are not necessarily essential except when clearly indicated as being essential and when it is considered to be obviously essential in principle. Yes. Further, in the above embodiments, when numerical values such as the number, numerical value, amount, range, etc. of constituent elements of the embodiment are mentioned, it is clearly indicated that they are particularly essential and clearly limited to a specific number in principle. It is not limited to the specific number except when it is done. Further, in the above embodiments, when referring to the shape, positional relationship, etc. of the component etc., unless otherwise specified or in principle when limited to a specific shape, positional relationship, etc., the shape, etc. It is not limited to the positional relationship and the like.

DESCRIPTION OF SYMBOLS 10 conveyance jig 11 upper surface of conveyance jig 12 lower surface of conveyance jig 13 insertion tip of conveyance jig 15 left end of conveyance jig 16 right end of conveyance jig 21 heating space 24 back wall of heating space 30 heating space Opening 31 Upper inner wall of the heating space 32 Inner wall below the heating space 33 Inner wall on the left of the heating space 34 Inner wall on the right of the heating space 40 Air passage 50 Inhibitor K1 Heated body

Claims (3)

A box-like heating space (21) having an opening (30) which is open at the front end side and a rear wall (24) which is closed at the rear end side;
The opening is formed in a plate shape in which one of the upper and lower plate surfaces is the upper surface (11) and the other is the lower surface (12), and the body to be heated (K1) is mounted on at least one of the upper and lower plate surfaces. Using a heating device (S1) including a transport jig (10) for inserting and recovering the heating space via the
The transfer jig on which the body to be heated is mounted directs the upper surface and the lower surface of the transfer jig upward and downward, and the left and right end portions (15, 16) are the inner walls of the heating space on the left and right. A method of manufacturing a body to be heated comprising a heating step of heating the body to be heated in the inserted state while being in contact with (33, 34) and being inserted into the heating space from the opening. There,
In the insertion state of the transport jig into the heating space in the heating step, a first gap (G1) between the upper surface of the transport jig and the upper inner wall (31) of the heating space opposite thereto. A second gap (G2) between the lower surface of the transfer jig and the lower inner wall (32) of the heating space opposite to the lower surface, and the insertion tip portion (13) of the transfer jig And a third gap (G3) between the heating space and the back wall of the heating space, and a U-shaped configuration in which the third gap is a U-turn portion, and an air passage (40) through which air flows is configured. And what
Protrusive obstructions (50 in the air passage) on at least one of the upper and lower inner walls of the heating space and the upper and lower surfaces of the transfer jig In the heating step, the flow of air in the air passage is provided with resistance.   In the first gap or the second gap, the projecting tip end of the inhibition portion contacts the inner wall of the heating space facing the inhibition portion or the plate surface of the transfer jig, thereby the air passage The method for manufacturing a body to be heated according to claim 1, wherein the air flow in the step (b) is shut off. A box-like heating space (21) having an opening (30) which is open at the front end side and a rear wall (24) which is closed at the rear end side;
The opening is formed in a plate shape in which one of the upper and lower plate surfaces is the upper surface (11) and the other is the lower surface (12), and the body to be heated (K1) is mounted on at least one of the upper and lower plate surfaces. A transfer jig (10) for inserting and recovering the heating space through the
The transfer jig on which the body to be heated is mounted directs the upper surface and the lower surface of the transfer jig upward and downward, and the left and right end portions (15, 16) are the inner walls of the heating space on the left and right. A heating device configured to heat the object to be heated in the inserted state while being in contact with (33, 34) and being inserted into the heating space from the opening.
In the insertion state of the transfer jig into the heating space, a first gap (G1) between the upper surface of the transfer jig and the upper inner wall (31) of the heating space opposite thereto, the transfer A second gap (G2) between the lower surface of the jig and the lower inner wall (32) of the heating space opposite to the lower surface, and an insertion tip portion (13) of the transfer jig and the heating space A third gap (G3) between the lower wall and the back wall, and a U shape having the third gap as a U-turn portion, and an air passage (40) through which air flows is constituted. Yes,
Protrusive obstructions (50 in the air passage) on at least one of the upper and lower inner walls of the heating space and the upper and lower surfaces of the transfer jig And the like.

Images