JPWO2019193709A1 - Heat exchange tube insertion device - Google Patents

Abstract

An object of the present invention is to provide a heat exchange tube insertion device for aligning laminated fins based on the positions of the through holes in order to reliably insert the heat exchange tubes into the through holes of the laminated fins. As a solution, from a laminated fin holding portion (20) that holds the laminated fins (10) while maintaining the laminated state, and a through hole (12) that opens on one end surface of the laminated fins (10) in the stacking direction. A plurality of guide rods (30) that are inserted in the stacking direction of the laminated fins (10) and abut the tip ends of the heat exchange tubes (T) that are inserted through the through holes (12) that open to the other end face. A plurality of guide rods (30) are provided with a guide rod moving portion (40) for inserting the plurality of guide rods (30) into the through holes (12) of the laminated fins (10) held by the laminated fin holding portions (20). Reference numeral (30) is a heat exchange tube insertion device (100), which is characterized in that a plurality of types are provided due to differences in outer diameter dimensions.

Description

The present invention relates to a heat exchange tube insertion device, and more specifically, a heat exchange tube insertion device for inserting a heat exchange tube into a laminated fin used in a heat exchanger at a position of a through hole formed in each fin. Regarding.

As shown in FIG. 24, in a heat exchanger such as a cooler, a heat exchange tube T for passing a heat medium through the through holes 12 in a laminated fin 10 formed by laminating a plurality of fins 11 having through holes 12 formed therein. It is configured by being inserted. As such a heat exchange tube T, a hairpin-shaped tube formed by bending a copper tube into a U shape at a central portion is used. Patent Document 1 (International Publication No. WO2017 / 061004) and Patent Document 2 (Japanese Unexamined Patent Publication No. 9-108760) refer to Patent Document 1 (International Publication No. WO2017 / 061004) and Patent Document 2 (Japanese Unexamined Patent Publication No. 9-108760) as a heat exchange tube insertion device for inserting the heat exchange tube T into the through hole 12 of the laminated fin 10. Those having the structure as disclosed are known.

In order for the heat exchange tube to be inserted into the through holes of the laminated fins, the positions of all the through holes formed in the fins must be the same in the laminating direction of the laminated fins. Therefore, as disclosed in Patent Document 2, individual fins constituting the laminated fin are formed by inserting the guide rod of the heat exchange tube into the through hole before inserting the heat exchange tube into the through hole of the laminated fin. Are aligned based on the position of the through holes in the stacking direction.

International Publication No. WO2017 / 061004 Japanese Unexamined Patent Publication No. 9-108760

In order to align the laminated fins, it is conceivable to insert a guide rod having an outer diameter dimension substantially the same as the diameter dimension of the through hole so as to be inserted from the through hole in the laminating direction of the laminated fin. However, when such a guide rod is used, the guide rod may not be able to penetrate in the stacking direction of the laminated fins due to friction between the guide rod and the through hole. On the other hand, if a guide rod whose outer diameter is significantly smaller than that of the through hole is used, the guide rod itself can be easily inserted into the laminated fins, but the laminated fins cannot be reliably aligned. , There is a problem that it becomes difficult to insert the heat exchange tube.

The present invention has been made to solve the above problems. The purpose is to align the heat exchange tubes at the positions of the through holes formed in the respective fins of the laminated fins so that the heat exchange tubes can be reliably and easily inserted into the through holes. To provide a replacement tube insertion device.

That is, the present invention is a heat exchange tube insertion device for inserting a heat exchange tube into the positions of a plurality of through holes formed in the laminated fins used in the heat exchanger, and maintains the laminated state. The laminated fin holding portion that holds the laminated fins in a state and the through hole that opens in the one end surface of the laminated fins in the laminated direction are inserted in the laminated direction of the laminated fins and open to the other end surface. A plurality of guide rods to which the tips of the heat exchange tubes inserted through the through holes are brought into contact, and a guide rod for inserting the plurality of guide rods into the through holes of the laminated fins held by the laminated fin holding portion. The plurality of guide rods are provided with a moving portion, and a plurality of types of the plurality of guide rods are provided due to differences in outer diameter dimensions.

As a result, before the heat exchange tube is inserted into the through holes formed in the fins of the laminated fins, the guide rod can be penetrated in the laminating direction of the laminated fins at the positions of the through holes, and the laminated fins are made through the holes. It is possible to reliably align in the stacking direction at the position of. Then, the heat exchange tube can be easily inserted into the through-hole portion of the laminated fins by simply pulling out the guide rod from the laminated fins with the tip of the heat exchange tube in contact with the tip of the guide rod penetrating in the laminated direction of the laminated fins. And it can be inserted reliably.

Further, the plurality of guide rods are formed so that the outer diameter dimension is larger than the outer diameter dimension of the heat exchange tube inserted into the through hole and the outer diameter dimension is smaller than the diameter dimension of the through hole. The first guide rod and the second guide having the outer diameter dimension in the dimension range of 98 to 102% of the outer diameter dimension of the heat exchange tube and having a diameter smaller than that of the first guide rod. It is preferable to have a rod.

This makes it possible to inexpensively provide a heat exchange tube insertion device capable of reliably and efficiently aligning the laminated fins in the laminated direction of the laminated fins.

Further, it is preferable that the plurality of guide rods are provided with a plurality of types of outer diameter dimensions of the cap portion at the tip portion on the insertion side into the through hole.

As a result, only the outer diameter of the cap portion attached to the guide rod needs to be changed, so that the configuration of the portion other than the cap portion can be standardized.

According to the heat exchange tube insertion device of the present invention, the laminated fins can be pre-aligned based on the through-hole positions by penetrating the guide rods through the through holes formed in the respective fins of the laminated fins. Then, if the guide rod is pulled out from the through hole of the laminated fin with the heat exchange tube in contact with the tip of the guide rod, the heat exchange tube can be easily and surely inserted into the through hole of the laminated fin. it can.

It is a schematic block diagram of the heat exchange tube insertion apparatus in 1st Embodiment. It is a perspective view of the laminated fin in this embodiment. It is a cross-sectional view of a main part which shows the state which the 1st guide rod is inserted into a part of the through hole in a laminated fin. It is sectional drawing of the main part which shows the state which the 2nd guide rod is inserted into the other through hole in the laminated fin. It is sectional drawing of the main part which shows the insertion state of a heat exchange tube. It is sectional drawing of the main part which shows the insertion order into the through hole in the laminated fin of the guide rod in 2nd Embodiment. It is sectional drawing of the main part which shows the insertion order into the through hole in the laminated fin of the guide rod in 2nd Embodiment. It is sectional drawing of the main part which shows the insertion order into the through hole in the laminated fin of the guide rod in 2nd Embodiment. It is the schematic plan view of the guide rod moving part and the laminated fin transport part in 3rd Embodiment. It is a schematic front view corresponding to FIG. It is a schematic front view which shows the process of inserting a guide rod into a laminated fin in 3rd Embodiment. It is a schematic front view following FIG. It is a schematic front view following FIG. It is a schematic front view following FIG. It is a schematic front view following FIG. It is a schematic front view following FIG. It is a schematic front view following FIG. It is the schematic plan view of the guide rod moving part and the heat exchange tube insertion part in 3rd Embodiment, and the arrow A view in the figure. It is a schematic front view corresponding to FIG. It is a schematic front view which shows the process of inserting a heat exchange tube into a laminated fin in 3rd Embodiment. It is a schematic front view following FIG. It is a schematic front view following FIG. It is a schematic front view following FIG. It is a perspective view of the laminated fin and the heat exchange tube in the prior art.

(First Embodiment)
FIG. 1 is a schematic configuration diagram of a heat exchange tube insertion device according to the present embodiment. The heat exchange tube insertion device 100 in the present embodiment moves the laminated fin holding portion 20 for holding the laminated fins 10, the plurality of guide rods 30 inserted into the through holes 12 of the laminated fins 10, and the plurality of guide rods 30. It is provided with a guide rod moving unit 40 and an operation control unit 50.

A perspective view of the laminated fin 10 and the heat exchange tube T in this embodiment is shown in FIG. The laminated fin 10 in the present embodiment is formed by laminating a plurality of plate-shaped fins 11 in the plate thickness direction. The fins 11 are formed with a plurality of through holes 12 in a staggered pattern (a state in which the positions of the through holes 12 are staggered in adjacent columns or rows). In FIG. 2, the arrow X direction is the column direction and the arrow Y direction is the row direction. Further, the hairpin-shaped heat exchange tube T is a metal tube made of a material having high thermal conductivity such as a copper tube, and is bent in a U shape at a bent portion B in the central portion in the length direction.

As shown in FIG. 1, the laminated fin holding portion 20 holds the laminated fins 10 while maintaining the laminated state of the laminated fins 10. As such a laminated fin holding portion 20, the laminated fins 10 from which the laminated fins 10 are taken out together with the stack pins (not shown) from the stacking device (not shown) are brought into contact with the contact plates 22 from both ends in the laminated direction. A clamper structure or the like including a contact plate driving unit 24 that moves the opposing contact plates 22 and 22 in contact with and detached from each other in the stacking direction of the laminated fins 10 (direction of arrow A in FIG. 1) can be used. 1 and 2 show a state in which the stack pin is pulled out after the laminated fin 10 is clamped by the contact plate 22 in the stacking direction, but the stack pin should not be pulled out from the laminated fin 10. You can also. The operation of the contact plate driving unit 24 is controlled by the operation control unit 50.

Further, the contact plate 22 of the laminated fin holding portion 20 in the present embodiment is formed in an L shape, and the first inner end edge 22A abuts on a part of the through hole 12 forming surface of the laminated fin 10, and the second The inner edge 22B is in a state of being spaced apart from the side surface of the laminated fin 10. According to such an abutting plate 22, it is advantageous in that the plane position of each fin 11 can be moved in the direction orthogonal to the stacking direction of the laminated fins 10 while maintaining the laminated state of the laminated fins 10. .. The configuration of the laminated fin holding portion 20 is not limited to the configuration shown in this embodiment.

The plurality of guide rods 30 are inserted in the stacking direction of the laminated fins 10 through the through holes 12 opened on one end surface of the laminated fins 10 held by the laminated fin holding portions 20 in the stacking direction. The plurality of guide rods 30 in the present embodiment have a first guide rod 30A and a second guide rod 30B having different maximum outer diameter dimensions. The maximum outer diameter of the first guide rod 30A is formed to be larger than the outer diameter of the heat exchange tube T and smaller than the diameter of the through hole 12. On the other hand, the maximum outer diameter of the second guide rod 30B is formed to be substantially equal to the outer diameter of the heat exchange tube T. The maximum outer diameter of the second guide rod 30B in the present embodiment is in the size range of 98 to 102% of the heat exchange tube T, and is smaller than the maximum outer diameter of the first guide rod 30A. It is said.

As shown in FIGS. 3 and 4, the first guide rod 30A and the second guide rod 30B have a rod portion 30Ar (30Br) and a cap portion 30Ac (30Bc) at the tip of the rod portion 30Ar (30Br). It is also possible to adopt a configuration in which the cap portion 30Ac (30Bc) is removable. In this case, the maximum outer diameter of the cap portion 30Ac is formed to be larger than the outer diameter of the heat exchange tube T and smaller than the diameter of the through hole 12, and the cap portion 30Bc is formed. The maximum outer diameter may be formed to be substantially equal to the outer diameter of the heat exchange tube T. As a result, the rod portion 30Ar of the first guide rod 30A and the rod portion 30Br of the second guide rod 30B can be made common in the same diameter dimension in which the outer diameter dimension is equal to or less than the outer diameter dimension of the heat exchange tube T. Further, it is advantageous in that the frictional resistance when the first guide rod 30A is inserted into the through hole 12 can be reduced. As described above, it is important that a plurality of types of guide rods 30 having different maximum outer diameter dimensions are provided.

The guide rod moving portion 40 inserts and pulls out a plurality of guide rods 30 into the laminated fins 10 from external positions of the laminated fins 10 in the laminated direction of the laminated fins 10 (inserts and pulls out in the direction of arrow B in FIG. 1). It is the composition of. As such a guide rod moving portion 40, a linear motion device typified by a fluid cylinder or the like is preferably used. The operation of the guide rod moving unit 40 in the present embodiment is controlled by the operation control unit 50 so that the first guide rod 30A and the second guide rod 30B are inserted and removed from the through holes 12 of the laminated fins 10 at different timings. ..

As shown in FIG. 3, the operation control unit 50 in the present embodiment is a part of a plurality of through holes 12 opened on one end surface in the stacking direction of the laminated fins 10 held by the laminated fin holding unit 20. The guide rod moving unit 40 is operated so as to insert the first guide rod 30A into the guide rod 30A. Subsequently, as shown in FIG. 4, the motion control unit 50 operates the guide rod moving unit 40 so as to insert the second guide rod 30B into the other remaining through holes 12. At this time, the first guide rod 30A may be inserted into one through hole 12 with respect to the plurality of adjacent through holes 12, and in the present embodiment, one first guide rod 30A is provided for every four through holes 12. The guide rod moving unit 40 is operated so as to insert the guide rod 30A.

By inserting the first guide rod 30A whose outer diameter dimension is slightly smaller than the diameter dimension of the through hole 12 in advance into a part of the through hole 12 in this way, all the second guide rods 30B are surely transparent. It can be inserted from the hole 12 in the stacking direction of the laminated fin 10. As a result, the laminated fins 10 can be reliably aligned in the laminated direction of the laminated fins 10 based on the position of the through holes 12 without deforming the through holes 12 by the first guide rod 30A. On the contrary, the second guide rod 30B formed in advance of the first guide rod 30A and having an outer diameter slightly smaller than the outer diameter of the first guide rod 30A is inserted into the through hole 12. You may let it. This is convenient in that the process of inserting the plurality of guide rods 30 into the through holes 12 can be performed more smoothly.

In the present embodiment, the guide rod 30 is inserted into the through hole 12 with the stack pin pulled out from the laminated fin 10, but the stack pin SP is inserted as shown by the broken line in FIG. A plurality of guide rods 30 can be inserted into the through holes 12 of the laminated fins 10. For the through hole 12 into which the stack pin SP is inserted, it is preferable to insert the first guide rod 30A into the through hole 12 of the laminated fin 10. Specifically, the tip of the first guide rod 30A is abutted against the tip of the stack pin SP, and the stack pin SP is pulled out from the through hole 12 while maintaining the abutting state of the first guide rod 30A and the stack pin SP. The first guide rod 30A can be inserted at the same time. By inserting the stack pin SP into the through hole 12 of the laminated fin 10 in this way, the first guide rod 30A or the second guide rod 30B is inserted into the laminated fin 10 in a state where a certain degree of alignment is maintained. It is also convenient in that it can be done.

When the stack pin SP is inserted into the through hole 12 of the laminated fin 10, the state shown in FIG. 4 can be achieved without going through the state shown in FIG. Specifically, for the through hole 12 into which the stack pin SP is inserted, the tip of the first guide rod 30A is brought into contact with the tip of the stack pin SP. Then, the tip of the second guide rod 30B is inserted into the other through hole 12. After that, the stack pin SP can be pulled out from the through hole 12, the first guide rod 30A can be inserted, and the second guide rod 30B can be inserted into the through hole 12 at the same time.

The operation control unit 50 controls the operations of the laminated fin holding unit 20 and the guide rod moving unit 40, respectively, and is connected to the CPU and storage unit of a personal computer (not shown) electrically connected to the heat exchange tube insertion device 100. It can be configured by a control program stored in advance. The operation control unit 50 in the heat exchange tube insertion device 100 may have the same configuration as the operation control unit of the heat exchange core manufacturing apparatus (not shown).

After aligning the positions of the respective fins 11 in the laminated fins 10 based on the positions of the through holes 12, the motion control unit 50 executes an operation of inserting the heat exchange tube T into the through holes 12. Specifically, the heat exchange tube T is inserted into the through hole 12 as follows.

The operation control unit 50 is a heat exchange tube insertion portion (not shown), and the cap portions 30Ac and 30Bc of the first guide rod 30A and the second guide rod 30B projecting from the through hole 12 opening on the other end surface of the laminated fin 10. The tip of the heat exchange tube T is brought into contact with the heat exchange tube T (see FIG. 5). The operation control unit 50 maintains the state in which the tip of the heat exchange tube T is in contact with the cap portions 30Ac and 30Bc, and the first guide rod 30A and the second guide rod 30B are laminated on the guide rod moving portion 40. It is pulled out from the through hole 12 in the direction of the arrow in FIG. As a result, the first guide rod 30A and the second guide rod 30B can be pulled out from the through hole 12 and the heat exchange tube T can be inserted into the through hole 12 at the same time. In this way, it is possible to obtain a heat exchanger obtained by inserting the heat exchange tube T into the laminated fin 10.

(Second Embodiment)
In the present embodiment, in addition to the configuration of the plurality of guide rods 30 in the first embodiment, the maximum outer diameter dimension is formed to be an intermediate dimension between the outer diameter dimension of the first guide rod 30A and the outer diameter dimension of the second guide rod 30B. It is characterized in that it has a third guide rod 30C. The configuration of the third guide rod 30C is the same as that of the previous embodiment, and is composed of a rod portion 30Cr and a cap portion 30Cc that can be attached to and detached from the rod portion 30Cr. Since other configurations are common to those of the first embodiment, detailed description thereof is omitted here by using the same reference numerals and the like.

As shown in FIG. 6, the motion control unit 50 in the present embodiment has a plurality of openings in the guide rod moving unit 40 on one end surface of the laminated fins 10 held by the laminated fin holding portions 20 in the laminating direction. The third guide rod 30C is inserted into a part of the through hole 12. Subsequently, as shown in FIG. 7, the motion control unit 50 first guides the guide rod moving unit 40 to a part of the other through holes 12 (preferably the through holes 12 through which the stack pin is inserted). The rod 30A is inserted. Then, as shown in FIG. 8, the motion control unit 50 causes the guide rod moving unit 40 to insert the second guide rod 30B into the remaining through holes 12.

At this time, the operation control unit 50 may insert the third guide rod 30C, which is first inserted into the through hole 12, into one through hole 12 with respect to the plurality of adjacent through holes 12, and this embodiment In, one third guide rod 30C is inserted into each of the four through holes 12. Further, the motion control unit 50 in the present embodiment inserts the first guide rod 30A into the through hole 12 at the center position of the three through holes 12 separated by the through holes 12 into which the third guide rod 30C is inserted. There is. Then, the motion control unit 50 inserts the second guide rod 30B into the remaining through holes 12.

In this way, the motion control unit 50 has a third maximum outer diameter thickness between the first guide rod 30A and the second guide rod 30B prior to the insertion of the first guide rod 30A having the largest maximum outer diameter dimension. The guide rod 30C is inserted into a part of the through hole 12. As a result, the third guide rod 30C can be smoothly inserted into the through hole 12. Further, since the maximum outer diameter of the third guide rod 30C with respect to the diameter of the through hole 12 is formed to an appropriate size (the maximum outer diameter between the first guide rod 30A and the second guide rod 30B). , The laminated fins 10 are pre-aligned, and the frictional force when the first guide rod 30A is inserted into the through hole 12 can be reduced. This is advantageous in that the outputs of the guide rod moving portion 40 and the heat exchange tube insertion portion can be reduced and the deformation of the through hole 12 can be minimized.

After aligning the laminated fins 10 in the laminated direction in this way, the tip of the heat exchange tube T is brought into contact with the guide rod 30 by the heat exchange tube insertion portion and the guide rod moving portion 40 in the same manner as in the first embodiment. The heat exchange tube T can be inserted into the through hole 12 simply by pulling out the guide rod 30 from the through hole 12 while maintaining the state.

(Third Embodiment)
In the present embodiment, the laminated fin 10 in a state where the stack pin SP is inserted is conveyed to the laminated fin transport portion 60 which moves in contact with and detaches from the guide rod moving portion 40, and the laminated fin 10 in a state where the stack pin SP is inserted is conveyed. A mode in which a plurality of guide rods 30 are inserted into the guide rod 30 will be described. Similar to the previous embodiment, the plurality of guide rods 30 are formed in at least two types of diameter dimensions. In the present embodiment, a plurality of guide rods 30 are used for simplification of the description. As shown in FIGS. 9 and 10, the guide rod moving portion 40 in the present embodiment includes a base portion 41, a guide rod linear motion mechanism 42, a guide rod support 44, a laminated fin receiving portion 46, and a laminated fin holder. It has a portion 48. The operation of the guide rod moving unit 40 is controlled by the operation control unit 50. Since other configurations of this embodiment are common to those of the first embodiment, detailed description thereof is omitted here by using the same reference numerals as those of the first embodiment.

The base portion 41 is formed in a plate body having a rectangular shape in a plan view. A fluid cylinder 42 as a guide rod linear motion mechanism is arranged at the end of the base portion 41. A moving side guide rod support 44A is attached to the output shaft of the fluid cylinder 42, and moves in synchronization with the expansion / contraction operation of the output shaft of the fluid cylinder 42. A fixed-side guide rod support 44B is erected at an intermediate position in the longitudinal direction of the base portion 41. As described above, the guide rod support 44 in the present embodiment is composed of the moving side guide rod support 44A and the fixed side guide rod support 44B. The first end of the plurality of guide rods 30 is connected to the moving side guide rod support 44A, and the plurality of guide rods 30 are supported (inserted) by the fixed side guide rod support 44B so that the axial directions of the plurality of guide rods 30 are horizontal. It is provided so that it can reciprocate in a cantilevered state.

The laminated fin receiving portion 46 extends in the axial direction (reciprocating direction) of the plurality of guide rods 30. The laminated fin receiving portions 46 are formed in a long strip, and are arranged at a plurality of locations at required intervals in an arrangement parallel to the axial direction of the plurality of guide rods 30. The positions of the through holes 12 of the laminated fins 10 placed on the laminated fin receiving portions 46 are aligned with the height positions of the plurality of guide rods 30.

A laminated fin holding portion 48 is arranged at a plane position of the base portion 41 facing the guide rod linear motion mechanism 42. The laminated fin holding portion 48 in the present embodiment is attached to the tip of the shaft of the fin fluid cylinder 48A and the fin fluid cylinder 48A, and has a stopper body 48B that can be expanded and contracted in the vertical direction in the drawing. The fin fluid cylinder 48A expands and contracts in the same direction as the expansion and contraction direction of the output shaft of the fluid cylinder 42.

The laminated fin conveying portion 60 has a stack pin gripping portion 64 that grips the stack pin SP inserted through the laminated fin 10 at both ends in the longitudinal direction of the base portion 62. The base portion 62 is formed in a plate body having a rectangular shape in a plan view. The stack pin gripping portion 64 is provided so that the gripping state and the non-grasping state of the stack pin SP can be switched and can be moved in and out of the base portion 62 in the vertical direction. The laminated fin transport unit 60 is provided so as to be movable at least in the arrow X direction in FIG. 10 and in the arrow Z direction in FIG. 11 by a drive mechanism (not shown), and moves in contact with and away from the guide rod moving unit 40. The operation of the laminated fin transport unit 60 is controlled by the operation control unit 50.

Subsequently, a method of inserting the plurality of guide rods 30 into the laminated fins 10 in the present embodiment will be described. The laminated fin transport unit 60 receives the laminated fin 10 in a state where the stack pin SP is inserted from a stack device (not shown). Specifically, as shown in FIG. 10, the stack pin gripping portion 64 grips the stack pin SP protruding from both ends in the stacking direction of the laminated fin 10, and receives the stacked fin 10 together with the stack pin SP from the stack device. ..

The laminated fin transport unit 60 moves in the arrow X direction of FIG. 10 and then moves in the arrow Z direction of FIG. 11 (may be simultaneously moved) according to the instruction of the operation control unit 50, and the laminated fins 10 are moved in the laminated fins 10. It is placed on the receiving portion 46. When the laminated fin 10 is placed on the laminated fin receiving portion 46, the stopper body 48B extends (rises) in the direction of the arrow in FIG. 11 and stands by at a lateral position of one end of the laminated fin 10 in the laminated direction. Let me. Next, the laminated fin transport unit 60 moves in the direction of arrow X in FIG. 12 according to the instruction of the operation control unit 50, and the tip of the stack pin SP is abutted against the tips of the plurality of guide rods 30, and the through hole 12 A plurality of guide rods 30 are aligned with the position of (the tip portion is inserted). After the tip ends of the stack pin SP and the tips of the plurality of guide rods 30 are brought into contact with each other, as shown in FIG. 13, the stack pin grip portions 64 on the side of the plurality of guide rods 30 are stacked according to the instruction of the operation control unit 50. The grip of the pin SP is released, and the pin SP rises in the direction of the arrow so as to separate from the stack pin SP.

Next, the laminated fin holding portion 48 contracts (shortens) the fin fluid cylinder 48A in the direction of the arrow (guide rod moving portion 40 side) in FIG. 14 according to the instruction of the operation control unit 50. As a result, as shown in FIG. 14, the stopper body 48B moves the laminated fins 10 so as to be pushed toward the guide rod 30 side. Subsequently, the fluid cylinder 42 and the laminated fin transfer unit 60 are moved in a state in which the plurality of guide rods 30 and the stack pin SP are synchronized in the arrow X direction shown in FIG. 15 according to the instruction of the operation control unit 50. In this way, the insertion of the plurality of guide rods 30 into the through holes 12 of the laminated fins 10 and the pulling out operation of the stack pins S are performed at the same time.

After the stack pin SP is completely pulled out from the laminated fin 10, the stack pin grip portion 64 retracted from the stack pin SP moves (descends) in the direction of the arrow and approaches the stack pin SP as shown in FIG. Holds the stack pin SP together with. After that, the laminated fin transport unit 60 separates from the guide rod moving unit 40 according to the instruction of the operation control unit 50 (FIG. 17).

According to the present embodiment, since the plurality of guide rods 30 are inserted through the through holes 12 through the laminated fins 10 in which the stack pin SP is inserted through the through holes 12, the plurality of guide rods 30 are inserted. Even before, the laminated fins 10 are in an aligned state. As a result, the process of inserting the plurality of guide rods 30 into the through holes 12 of the laminated fins 10 can be smoothly performed, and the plurality of guide rods 30 can be inserted into the through holes 12 of the laminated fins 10 at the same time. It is convenient.

FIG. 18 is a plan view of the guide rod moving portion 40 and the heat exchange tube inserting portion 70 in the present embodiment, and a view taken along the arrow A in the drawing. FIG. 19 is a front view of FIG. The heat exchange tube insertion portion 70 is for inserting the heat exchange tube T into the through holes 12 of the laminated fins 10 into which a plurality of guide rods 30 are inserted. The heat exchange tube insertion portion 70 in the present embodiment has an insertion drive portion 76 for inserting the base portion 72, the heat exchange tube holding portion 74, and the heat exchange tube T into the through holes 12 of the laminated fins 10. The heat exchange tube insertion portion 70 is provided so as to be able to move in contact with and detach from the guide rod moving portion 40. Further, the operation of the heat exchange tube insertion unit 70 is controlled by the operation control unit 50.

The base portion 72 is formed in a plate body having a rectangular shape in a plan view. The heat exchange tube holding portion 74 has a fixed side holding portion 74A erected on the guide rod moving portion 40 side and a moving side holding portion 74B that can be brought into contact with and separated from the guide rod 30 in the axial direction. The fixed side holding portion 74A is provided with a first through hole 74Aa for inserting the heat exchange tube T and a second through hole 74Ab for inserting the laminated fin receiving portion 46. As a result, even if the heat exchange tube insertion portion 70 is moved in contact with the guide rod moving portion 40, the heat exchange tube T and the laminated fin receiving portion 46 do not interfere with the fixed side holding portion 74A. The moving side holding portion 74B is provided so as to be movable along the guide body 78 erected on the upper surface of the base portion 72.

As shown in FIG. 20, the heat exchange tube insertion portion 70 approaches the guide rod moving portion 40 from the same height position according to the instruction of the operation control unit 50, and the tip portions of the heat exchange tube T are set on the plurality of guide rods 30. Make sure it is abutted against the tip. Then, the fluid cylinder 42 and the insertion drive unit 76 move in a state synchronized with the arrow X direction in FIG. 21 while maintaining a state in which the plurality of guide rods 30 and the heat exchange tubes T are in contact with each other according to the instruction of the operation control unit 50. .. In this way, the process of pulling out the plurality of guide rods 30 from the through holes 12 and the process of inserting the heat exchange tubes T are simultaneously performed on the laminated fins 10.

Further, as shown in FIG. 22, after the extraction process of the plurality of guide rods 30 from the laminated fins 10 and the insertion process of the heat exchange tube T are completed, the heat exchange tube insertion unit 70 is instructed by the operation control unit 50. As shown in 23, the guide rod moves in a direction away from the moving portion 40. In this way, the heat exchange tube T can be inserted into the through hole 12 of the laminated fin 10. The laminated fin 10 into which the heat exchange tube T is inserted is taken out from the guide rod moving portion 40 by a manipulator or the like (not shown).

The present invention has been described in various ways with reference to suitable embodiments, but the present invention is not limited to this embodiment, and it goes without saying that many modifications can be made without departing from the spirit of the invention. .. For example, in the first embodiment, one first guide rod 30A is inserted into each of the four through holes 12, and then the second guide rod 30B is inserted into the other remaining through holes 12. , Not limited to this form. The number of through holes 12 into which the first guide rod 30A should be inserted can be appropriately changed according to the outer diameter dimension of the first guide rod 30A.

Further, in the first embodiment and the second embodiment, the plurality of guide rods 30 have two types (first guide rod 30A and second guide rod 30B) or three types (first guide rod 30A and second guide rod 30B). Although it is composed of the outer diameter dimensions of 30B and the third guide rod 30C), the plurality of guide rods 30 can also be configured with four or more types of outer diameter dimensions.

Further, in the first embodiment and the second embodiment, the first guide rod 30A, the second guide rod 30B, and the third guide rod 30C all have a rod portion (30Ar, 30Br, 30Cr) and a cap portion (30Ac, 30Bc, 30Cc) is in a removable form, but the form is not limited to this form. The first guide rod 30A, the second guide rod 30B, and the third guide rod 30C having the shapes described in the above embodiments may be formed in a so-called one-piece shape. Further, the first guide rod 30A, the second guide rod 30B, and the third guide rod 30C can be formed by simple barrel-shaped rods having different maximum outer diameter dimensions.

Further, the heat exchange tube T can be inserted into the laminated fin 10 in a plurality of times. As a result, the friction between the through hole 12 and the heat exchange tube T is reduced, which is convenient in that the heat exchange tube T can be easily inserted into the through hole 12 and the through hole 12 can be prevented from being damaged. ..

Further, in the third embodiment, the heat exchange tube insertion portion 70 is moved in contact with the guide rod moving portion 40 from the same height position, but the present invention is not limited to this embodiment. The heat exchange tube insertion portion 70 may be movable in contact with and in the height direction (so-called three-dimensional direction) with respect to the guide rod moving portion 40, similarly to the laminated fin transport portion 60.

Further, the present invention can also adopt an embodiment in which the above embodiments and the modifications in the specification are appropriately combined.

Claims (3)

A heat exchange tube insertion device for inserting a heat exchange tube into the positions of a plurality of through holes formed in each of the laminated fins used in the heat exchanger.
A laminated fin holding portion that holds the laminated fins while maintaining the laminated state,
The tip of the heat exchange tube inserted from the through hole opened in the one end surface of the laminated fins in the laminating direction in the laminating direction of the laminated fins and inserted from the through hole opened in the other end face is the contact. With multiple guide bars in contact,
A guide rod moving portion for inserting the plurality of guide rods into the through holes of the laminated fins held by the laminated fin holding portions is provided.
A heat exchange tube insertion device characterized in that a plurality of types of the plurality of guide rods are provided due to differences in outer diameter dimensions. The plurality of guide rods
A first guide rod having an outer diameter dimension larger than the outer diameter dimension of the heat exchange tube inserted into the through hole and smaller than the diameter dimension of the through hole.
A second guide rod whose outer diameter is 98 to 102% of the outer diameter of the heat exchange tube and whose diameter is smaller than that of the first guide rod.
The heat exchange tube insertion device according to claim 1, wherein the heat exchange tube insertion device is provided. The heat exchange tube insertion device according to claim 1 or 2, wherein the plurality of guide rods are provided with a plurality of types of outer diameter dimensions of a cap portion at a tip portion on the insertion side into the through hole.

Images