JP2015164741A - Heat exchanger manufacturing apparatus and heat exchanger manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger manufacturing apparatus and a heat exchanger manufacturing method capable of improving manufacturing efficiency.SOLUTION: First stack pins are inserted into through-holes of continuously carried fins. Upstream chucks are each movable between an interposing position of interposing the first stack pins therebetween and holding the fins and a retreat position of retreating from the first stack pins and delivering the fins downward. Downstream chucks are each movable between an interposing position of interposing downward portions of the first stack pins with respect to the upstream chucks and holding the fins and a retreat position of retreating from the first stack pins and delivering the fins downward. A second stack portion is disposed downward of a first stack portion and the fins held by the first stack portion are delivered to the second stack portion. The upstream chucks and the downstream chucks are configured to switch over between the interposing position and the retreat position in a state in which any pair of the chucks are at the interposing positions.

Description

  Embodiments described herein relate generally to a heat exchanger manufacturing apparatus and a manufacturing method.

  A refrigeration cycle apparatus such as an air conditioner is equipped with a heat exchanger for exchanging heat between refrigerant and air (outdoor air or indoor air). This type of heat exchanger includes a plurality of fins stacked at intervals, and a heat exchange tube that passes through each fin in the thickness direction and through which a refrigerant flows.

  By the way, the manufacturing apparatus for manufacturing the above-described fin performs a pressing process on a band-shaped base material made of aluminum or the like, and is processed by a processing unit that cuts the base material into a predetermined length, and a processing unit. A stack portion on which the fins are stacked. The fins are taken out when a predetermined number of the fins are stacked on the stack portion and transported to a subsequent process. On the other hand, new fins are supplied again from the processing section to the stack portion from which the fins have been taken out.

  However, in the conventional configuration described above, when taking out the fins stacked on the stack portion, it is necessary to temporarily stop the supply of fins from the processing portion, which is still an improvement in terms of improving manufacturing efficiency. There was room for.

JP-A-57-152331

  Problem to be solved by the invention is providing the manufacturing apparatus and manufacturing method of a heat exchanger which can improve manufacturing efficiency.

The apparatus for manufacturing a heat exchanger according to the embodiment includes a first stack unit and a second stack unit. The first stack part has a first stack pin, an upstream chuck part, and a downstream chuck part. The first stack pin is inserted into the through hole of the fin that is continuously supplied. The upstream chuck portion is movable between a holding position for holding the first stack pin and holding the fin, and a retracted position for retracting from the first stack pin and delivering the fin downward. The downstream chuck portion clamps the lower portion of the first stack pin with respect to the sandwiching position by the upstream chuck portion, retracts from the sandwiching position for holding the fin, and the first stack pin, and delivers the fin downward. It can be moved between the retracted positions. The second stack portion is disposed below the first stack portion, and the fins held by the first stack portion are transferred. The upstream chuck portion and the downstream chuck portion are configured such that the holding position and the retracted position can be switched while at least one of the chuck portions is in the holding position.
Moreover, the manufacturing method of the heat exchanger of embodiment has a preliminary | backup stack process and this stack | stuck process. The preliminary stacking process includes a first transfer process and a second transfer process, and the fins are temporarily held by the first stack unit. In the first delivery step, the fin is delivered to the upstream chuck portion that sandwiches the first stack pin of the first stack portion. In the second delivery step, the fin held by the upstream chuck portion is delivered to the downstream chuck portion that sandwiches the first stack pin below the upstream chuck portion. In the stacking process, the fins held in the first stack part are transferred to the second stack part arranged below the first stack part.

The perspective view which shows the heat exchanger of 1st Embodiment. The schematic block diagram (side view) which shows the fin stack apparatus of 1st Embodiment. 1 is a schematic configuration diagram (plan view) showing a fin stack device of a first embodiment. The top view of a fin molded object. The side view which looked at the principal part of the fin stack apparatus from the X direction. The top view which looked at the principal part of the fin stack apparatus from the Z direction. Sectional drawing equivalent to the AA line of FIG. The fragmentary sectional view which follows the XY plane of an upstream chuck | zipper part (downstream chuck | zipper part). It is operation | movement explanatory drawing of a fin stack apparatus, Comprising: The side view equivalent to FIG. It is operation | movement explanatory drawing of a fin stack apparatus, Comprising: The side view equivalent to FIG. The schematic block diagram (plan view) which shows the fin stack apparatus of 2nd Embodiment. The fragmentary sectional view which looked at the principal part of the fin stack apparatus from the Y direction in 2nd Embodiment. In 2nd Embodiment, the side view which looked at the principal part of the fin stack apparatus from the X direction. It is operation | movement explanatory drawing of the fin stack apparatus in 2nd Embodiment, Comprising: The fragmentary sectional view corresponded in FIG. It is operation | movement explanatory drawing of the fin stack apparatus in 2nd Embodiment, Comprising: It is a side view equivalent to FIG. The schematic block diagram (side view seen from X direction) which shows the fin stack apparatus of 3rd Embodiment. The schematic block diagram (plan view) which shows the fin stack apparatus of 3rd Embodiment. The schematic block diagram (front view seen from the Y direction) which shows the fin stack apparatus of 3rd Embodiment.

Hereinafter, the manufacturing apparatus of the heat exchanger of embodiment is demonstrated with reference to drawings.
(First embodiment)
First, the configuration of the heat exchanger 1 will be briefly described.
As shown in FIG. 1, the heat exchanger 1 includes a plurality of fins 2 stacked at intervals, a heat exchange tube 3 that passes through the fins 2 in the thickness direction, and through which refrigerant flows, have.

Each fin 2 is made of a material having excellent thermal conductivity, such as aluminum, and is formed in a strip shape. In the fin 2, a plurality of through holes 2 a penetrating in the thickness direction are formed at intervals in the longitudinal direction of the fin 2. In the illustrated example, the through holes 2 a are formed in one row (the tube row is one row) in the width direction of the fins 2.
And the fin 2 is laminated | stacked in the state which left the space | interval in the thickness direction, and the adjacent through-holes 2a overlapped with the corresponding through-hole 2a in the longitudinal direction, and is formed between each fin 2. FIG. Air flows through the gap.

  The heat exchange tube 3 is made of a material having excellent thermal conductivity, such as copper, and is fitted into the through holes 2 a of the fins 2. Specifically, the heat exchange tube 3 passes through the corresponding through holes 2a in the longitudinal direction between the adjacent fins 2 and is folded back outside the stacked fins 2 so that the thickness direction of the fins 2 is increased. Meandering along.

Next, an apparatus for manufacturing the heat exchanger 1 (hereinafter referred to as a fin stack device 10) will be described. In the following description, the vertical direction is described as the Z direction, and the horizontal direction orthogonal to the Z direction is described as the X direction and the Y direction, respectively.
As shown in FIGS. 2 and 3, the fin stack device 10 is a device for processing the fin molded body 6 to be the fin 2 described above from the base material 7 and stacking the processed fin molded body 6. Specifically, the fin stack device 10 includes a base material supply unit 11, a processing unit 12, a cutting unit 13, a molded body supply unit 14, a first stack unit 15, and a second stack unit 16 from the upstream side in the transport direction. They are arranged in this order toward the downstream side.

  A band-shaped base material 7 is set in the base material supply unit 11. The base material 7 is wound around the base material supply unit 11 in a roll shape, and is continuously drawn out downstream as the base material supply unit 11 rotates. In addition, the width | variety of the base material 7 used by this embodiment has the width | variety for several sheets of the fin 2 mentioned above, for example.

  The processing unit 12 performs, for example, press processing on the base material 7 fed from the base material supply unit 11 to form the fin molded body 6. In the processing unit 12 of the present embodiment, in addition to the fin-shaped processing described above, row width processing for partitioning the base material 7 according to the width of the fin 2 is also performed. As shown in FIG. 4, in the row width processing, the base material 7 (fin molded body 6) is divided into two fins 2 as a set of fin groups 6a, and each fin 2 in the same fin group 6a. A perforated cut 6b is formed to partition each other. In each fin group 6 a, the longitudinal position of the through hole 2 a of one fin 2 is shifted by a half pitch with respect to the through hole 2 a of the other fin 2. That is, in the same fin group 6a, the through holes 2a of the fins 2 are formed in a staggered pattern.

  As shown in FIG. 2, the cutting unit 13 is disposed adjacent to the processing unit 12 in the X direction, and the fin molded body 6 conveyed from the processing unit 12 has a predetermined length (for example, the longitudinal direction of the fin 2). Cut at the length of

  The molded body supply unit 14 is disposed adjacent to the cutting unit 13 in the X direction, and the lower surface thereof has the same height as the conveyance surfaces of the base material supply unit 11, the processing unit 12, and the cutting unit 13. Are arranged. The molded body supply unit 14 can suck the fin molded body 6 cut by the cutting unit 13 by driving a suction unit (not shown). In the illustrated example, the molded body supply unit 14 holds the fin molded body 6 in a state where the upper surface of the fin molded body 6 is adsorbed and the thickness direction of the fin molded body 6 is aligned with the Z direction. Yes. When the driving of the suction means is stopped, the fin molded body 6 is dropped by its own weight with the thickness direction aligned with the Z direction and supplied to the first stack portion 15.

  As shown in FIGS. 5 to 7, the first stack unit 15 is disposed below the molded body supply unit 14 and temporarily holds the fin molded body 6 supplied from the molded body supply unit 14. Specifically, the first stack portion 15 includes a first pin unit 25 that guides the downward movement of the fin molded body 6, and an upstream chuck portion 22 and a downstream chuck portion 23 that can sandwich the first pin unit 25. ing.

  As shown in FIG. 6, the first pin unit 25 has a plurality of first stack pins 21 that extend parallel to each other along the Z direction and are inserted into the through holes 2 a of the fin molded body 6. ing. Each of the first stack pins 21 has a tapered shape in which the upper portion gradually tapers upward, and is arranged at intervals in the X direction and the Y direction. In the illustrated example, the first pin unit 25 is formed by arranging a plurality of rows of first stack pins 21 facing each other with a gap in the X direction along the Y direction corresponding to the fins 2. In this case, a pair of first stack pins 21 adjacent in the Y direction are arranged with a half-pitch shift in the X direction corresponding to the through hole 2a. The pair of first stack pins 21 facing each other in the X direction overlap with two different through holes 2 a in the Z direction with respect to the same fin 2.

  A pair of upstream chuck portions 22 is provided on both sides in the Y direction with respect to the first pin unit 25 described above, and a plurality of first stack pins 21 are held together in each upstream chuck portion 22. In addition, since each upstream chuck | zipper part 22 is set as the respectively equal structure, in the following description, the one upstream chuck | zipper part 22 is demonstrated.

  As shown in FIGS. 5 to 7, the upstream chuck portion 22 extends in parallel with each other along the Y direction orthogonal to the Z direction, which is the extending direction of the first stack pin 21, and from both sides in the X direction. A pair of arm portions 31 capable of holding the first stack pin 21, a base portion 32 that supports the base end portions of the arm portions 31, and a slider 33 that supports the base portion 32 movably along the Y direction. ing.

First, the slider 33 includes a forward position where the arm portion 31 is inserted into a supply position of the fin molded body 6 (a position below the molded body supply section 14), and a retreat where the arm portion 31 is retracted from the supply position of the fin molded body 6. The base 32 is supported so as to be movable in the Y direction between the position (see FIG. 9).
The base portion 32 moves the arm portion 31 along the X direction between a holding position for holding the first stack pin 21 and a spaced position spaced from the first stack pin 21 in a state where the arm portion 31 is in the advanced position. It is supported so that it can move.

As shown in FIG. 8, each arm portion 31 is formed with protruding portions (clamping portions) 35 that protrude from each other toward the inner side in the X direction (opposite arm portion 31 side) in the Y direction. Yes. In the Y direction, the protruding portions 35 are alternately arranged between the arm portions 31. In the clamping position, the protruding portion 35 of one arm portion 31 enters between the protruding portions 35 of the other arm portion 31.
On the other hand, in each arm portion 31, a portion located between the projecting portions 35 is recessed toward the outside in the X direction (opposite to the opposing arm portion 31), and accommodates the first stack pin 21. 36 is formed. The first stack pin 21 described above is sandwiched one by one between the projecting portion 35 and the accommodating recess 36 that face each other in the X direction among the arm portions 31.

  Here, a through hole 37 that penetrates the arm portion 31 in the X direction is formed in a portion of each arm portion 31 that is located in the protruding portion 35. In the through hole 37, a pressing mechanism 41 that presses the first stack pin 21 accommodated in the accommodating recess 36 toward the bottom side of the accommodating recess 36 is provided.

The pressing mechanism 41 includes a rod body 42 that is loosely inserted into the through hole 37 and a biasing member 43 that biases the rod body 42 inward in the X direction.
Stoppers 44 are provided at both ends of the rod body 42. Of the stoppers 44, the stoppers 44 located on the inner side in the X direction are formed with protrusions 45 toward the inner side in the X direction. The protrusion 45 enters the positioning hole 46 formed in the first stack pin 21 when the arm portion 31 is in the clamping position. That is, the protrusion 45 has a function of positioning the first stack pin 21 with respect to the upstream chuck portion 22 in the Z direction.

  The urging member 43 is formed of, for example, a coil spring or the like, and the rod body 42 is inserted therein, and among the stoppers 44 described above, the stopper 44 positioned inside the X direction and the inside of the through hole 37 Is intervening.

Further, a regulating mechanism 51 that regulates the movement of the arm portion 31 to the separated position is provided on the outer side in the X direction with respect to each arm portion 31.
The restriction mechanism 51 includes an angle 52 provided between each arm portion 31 and the base portion 32, and a locking member 53 fixed to the angle 52 and releasably locked to the base portion 32. And.

The angle 52 is L-shaped when viewed from above, and has one end extending along the Y direction and fixed to the base end of the arm 31. On the other hand, the other end portion of the angle 52 extends outward in the X direction with respect to the arm portion 31, and faces the base portion 32 with an interval in the Y direction.
The locking member 53 is made of, for example, a ball plunger, and is fixed to the other end of the angle 52. The locking member 53 is locked in a locking recess 32a formed in the base 32 when the arm portion 31 is in the clamping position.

  A pair of downstream chuck portions 23 are provided on both sides in the Y direction with respect to the first pin unit 25 described above, and a portion of the first stack pin 21 positioned below a sandwiched portion by each upstream chuck portion 22 is provided. Hold it. The upstream chuck portion 22 is substantially the same as the upstream chuck portion 22 except that the upstream chuck portion 22 is vertically symmetrical. Therefore, in the downstream chuck | zipper part 23, about the structure same as the upstream chuck | zipper part 22, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIGS. 1 and 2, the second stack portion 16 is mounted on the turntable 61 that is rotatable around the axis O extending in the Z direction, and the first stack portion. And a receiving portion 62 for receiving the fin molded body 6 supplied from 15.

  In the example shown in the figure, a pair of receiving portions 62 are provided at positions on the turntable 61 that face each other with the axis O interposed therebetween. The pair of receiving portions 62 are alternately opposed to the above-described first stack portion 15 in the Z direction by the rotation of the turntable 61. That is, the receiving unit 62 is located below the first stack unit 15 at a position facing the first stack unit 15 and a position shifted by, for example, 180 ° from the receiving position. It is possible to move between the take-out position for taking out the fin molded body 6 received in (1).

  The receiving portion 62 includes a base portion 63 that is supported on the turntable 61 so as to be movable up and down, a plurality of second pin units 65 that are erected on the base portion 63 and guide the downward movement of the fin molded body 6, It has.

  The second pin unit 65 has a plurality of second stack pins 64 that extend parallel to each other along the Z direction and are inserted into the through holes 2 a of the fin molded body 6. Each of the second stack pins 64 is tapered so that the upper portion thereof gradually tapers upward, and is arranged at intervals in the X direction and the Y direction. In the illustrated example, the second pin unit 65 is formed by arranging a plurality of rows of a pair of second stack pins 64 facing each other with an interval in the X direction along the Y direction corresponding to each fin 2. In this case, the pair of second stack pins 64 facing each other in the X direction are arranged inside the pair of first stack pins 21 facing each other in the X direction, and the first of the through holes 2a of the same fin 2 is the first one. Each is inserted through a through-hole 2a located inside the stack pin 21 in the X direction.

  The base part 63 supports the fin molded body 6 supplied from the first stack part 15 from below. The base portion 63 is configured to be movable in the Z direction by a driving unit (not shown). Specifically, the base portion 63 includes a wrap position (see FIG. 9) where the upper end portion of the second stack pin 64 wraps in the Z direction on the lower end portion of the first stack pin 21, and the upper end portion of the second stack pin 64 is The first stack pin 21 is movable from the lower end of the first stack pin 21 to a standby position (see FIG. 5) that retracts in the Z direction.

  Next, the operation of the above-described fin stack device 10 will be described. In the following description, in the first stack part 15, both the upstream chuck part 22 and the downstream chuck part 23 are in the clamping position, and in the second stack part 16, one receiving part 62 is in the receiving position, A case where the second stack pin 64 of the receiving unit 62 is in the wrap position will be described as an initial state.

  First, as shown in FIGS. 1 and 2, the base material supply unit 11 continuously feeds the base material 7 toward the processing unit 12 (feeding process). Subsequently, the processing unit 12 performs press processing on the base material 7 fed out from the base material supply unit 11 to form the fin molded body 6 described above (pressing process).

  Subsequently, the fin molded body 6 conveyed from the processing section 12 passes through the cutting section 13 while its upper surface is adsorbed by the molded body supply section 14. And the fin molded object 6 is cut | disconnected by the cutting part 13 at the time of passing through the cutting part 13 for a predetermined length (cutting process).

  As shown in FIGS. 5-7, the fin molded object 6 cut | disconnected by the cutting part 13 is temporarily hold | maintained in the 1st stack part 15 (preliminary stacking process). In the preliminary stacking process of the present embodiment, a first delivery process of delivering (supplying) the fin molded body 6 from the molded body supply section 14 onto the upstream chuck section 22 and a fin molded body 6 held by the upstream chuck section 22. And a second delivery step of delivering the product onto the downstream chuck portion 23.

  In the first delivery step, first, the suction of the fin molded body 6 by the molded body supply section 14 is released simultaneously with the cutting of the fin molded body 6 by the cutting section 13. Thereby, the fin molded body 6 falls due to its own weight. When the first stack pin 21 enters the through hole 2 a of the fin molded body 6 as the fin molded body 6 falls, the fin molded body 6 moves downward while being guided by the first stack pin 21. Thereafter, the fin molded body 6 reaches the upstream chuck portion 22, so that the downward movement is restricted and held on the upstream chuck portion 22.

  Then, the fin molded bodies 6 cut by the cutting section 13 are sequentially dropped toward the first stack section 15, whereby a plurality of fin molded bodies 6 are held on the upstream chuck section 22.

  Next, when a predetermined number (for example, about 50) of the fin molded bodies 6 are stacked on the upstream chuck portion 22, the fin molded bodies 6 held on the upstream chuck portion 22 are transferred to the downstream chuck portion 23. Delivery (second delivery process). In the second delivery step, the upstream chuck portion 22 is moved toward the retracted position. Specifically, as shown in FIG. 9, the arm portion 31 of the upstream chuck portion 22 moves from the holding position toward the separated position, whereby the holding of the first stack pin 21 by the arm portion 31 is released. The Furthermore, the base portion 32 moves from the advance position toward the retracted position, so that the arm portion 31 retracts from the supply position of the fin molded body 6.

  Then, the fin molded body 6 held on the upstream chuck portion 22 is lowered while being guided by the first stack pin 21. The start determination of the second delivery process (the operation timing of the upstream chuck portion 22 to the retracted position) is, for example, counting the number of times the fin molded body 6 is cut by the cutting part 13 (the number of times the first delivery process is performed). Can be judged.

  The fin molded body 6 falling from the upstream chuck portion 22 reaches the downstream chuck portion 23, so that its downward movement is restricted and held on the downstream chuck portion 23. In addition, the upstream chuck | zipper part 22 mentioned above returns to a clamping position immediately after the movement to a retracted position. Thereby, on the upstream chuck | zipper part 22, the 1st delivery process mentioned above is repeated.

  In addition, on the downstream chuck | zipper part 23, the fin molded object 6 delivered by a 2nd delivery process is laminated | stacked for a predetermined set (for example, 3 sets).

  Then, when a predetermined number of fin molded bodies 6 are stacked on the downstream chuck portion 23, the fin molded bodies 6 held on the downstream chuck portion 23 are transferred to the second stack portion 16 (main stacking step). Note that the start determination of the stack process (the operation timing of the downstream chuck portion 23 to the retracted position) can be determined by counting the number of times the second transfer process is performed.

  In the stacking process, the downstream chuck portion 23 is moved toward the retracted position. Specifically, as shown in FIG. 10, the arm portion 31 of the downstream chuck portion 23 moves from the holding position toward the separated position, so that the holding of the first stack pin 21 by the arm portion 31 is released. The Furthermore, the base portion 32 moves from the advance position toward the retracted position, so that the arm portion 31 retracts from the supply position of the fin molded body 6. Then, the fin molded body 6 held on the downstream chuck portion 23 falls due to its own weight.

  The fin molded body 6 that has fallen from the downstream chuck portion 23 comes out of the first stack pin 21 and is held by the second stack portion 16 disposed below the first stack portion 15. Specifically, when the second stack pin 64 enters the through hole 2a of the fin molded body 6 as the fin molded body 6 falls, the fin molded body 6 moves downward while being guided by the second stack pin 64. To do. Thereafter, when the fin molded body 6 reaches the base portion 63, the downward movement is restricted and held on the base portion 63.

  In addition, the downstream chuck | zipper part 23 returns to a clamping position rapidly after the fin molded object 6 falls. Thereby, on the downstream chuck | zipper part 23, the 2nd delivery process mentioned above is performed repeatedly. Further, when the downstream chuck portion 23 is at a position other than the clamping position, the upstream chuck portion 22 has returned to the clamping position. That is, each chuck | zipper part 22 and 23 can switch a clamping position and a retracted position in the state which made at least one of the chuck | zipper parts 22 and 23 into the clamping position. Thus, the preliminary stacking process and the main stacking process are performed while preventing the first stack pin 21 from falling.

  And on the base part 63, the fin molded body 6 delivered in this stacking process is laminated for a predetermined set.

  Subsequently, when a predetermined number of fin molded bodies 6 are laminated on the base portion 63, the fin molded bodies 6 are taken out from the one receiving section 62 (extraction step). Specifically, first, the base portion 63 (second stack pin 64) is lowered from the lap position toward the standby position, and the second stack pin 64 is retracted from the first stack portion 15. Thereafter, when the turntable 61 rotates, one receiving portion 62 moves toward the take-out position. Thereby, an operator takes out the fin molded object 6 stacked | stacked on one receiving part 62, and conveys it to a post process. Note that the start of the extraction process can be determined, for example, by counting the number of executions of the stack process.

  Further, when one receiving unit 62 moves to the take-out position, the other receiving unit 62 moves to the receiving position. Thereby, the fin molded body 6 held on the first stack portion 15 (downstream chuck portion 23) in the second delivery step is sequentially conveyed to the other receiving portion 62 moved to the receiving position.

As described above, in the present embodiment, the first stack portion 15 having the first stack pins 21 is provided above the second stack portion 16.
According to this configuration, since the fin molded body 6 can be temporarily held in the first stack portion 15, the fins stacked on the second stack portion 16 without stopping the conveyance of the fin molded body 6. The molded body 6 can be taken out. Thereby, the improvement of manufacturing efficiency can be aimed at.
In particular, in the present embodiment, a configuration is adopted in which the clamping position and the retraction position of each chuck part 22, 23 are switched while at least one of the chuck parts 22, 23 is in the clamping position. .
According to this configuration, the fin molded body 6 is interposed between the molded body supply section 14 and the first stack section 15 (upstream chuck section 22 and downstream chuck section 23) or between the first stack section 15 and the second stack section 16. The delivery can be performed without moving the first stack pin 21 itself. Accordingly, the fin molded body 6 can be reliably delivered after the operations in the preliminary stack process and the main stack process and the configuration of the first stack portion 15 are simplified.

In the present embodiment, the second stack pin 64 is moved from the first stack portion 15 (downstream chuck portion 23) to the second stack by moving the second stack pin 64 to the wrap position where the second stack pin 64 wraps in the Z direction. The fin molded body 6 can be reliably delivered to the portion 16.
On the other hand, by moving the second stack pin 64 to the retracted position for retracting from the first stack pin 21, the first stack can be removed when the fin molded body 6 held by the second stack portion 16 is taken out or conveyed. Interference between the pin 21 and the second stack pin 64 can be suppressed. Thereby, the further improvement of manufacturing efficiency can be aimed at.

By the way, when the plurality of first stack pins 21 are collectively held by the pair of arm portions 31 as in the present embodiment, it is necessary to secure the length of the arm portions 31. In this case, there is a tendency that the interval between the arm portions 31 is likely to be widened (the pinching force is weakened) as it goes from the proximal end side to the distal end side of the arm portion 31.
On the other hand, in this embodiment, in the pressing mechanism 41 of the upstream chuck portion 22 and the downstream chuck portion 23, the biasing member 43 located on the distal end side among the biasing members 43 in the arm portion 31 is the base end portion. The spring constant is set larger than that of the biasing member 43 located on the side.
According to this configuration, the urging member 43 located on the proximal end side is easily bent, and the urging member 43 located on the distal end side is hardly bent. Therefore, in the clamping position, the first stack pins 21 can be stably clamped over the entire arm portion 31 while keeping the distance between the arm portions 31 constant over the entire Y direction. .

In addition, in this embodiment, the stopper 44 of the pressing mechanism 41 is provided with the protrusion 45 that can enter the positioning hole 46 provided in the first stack pin 21. 21 can be reliably held. Thereby, it is possible to prevent the first stack pin 21 from coming off from the chuck portions 22 and 23.
Further, since each chuck portion 22, 23 is provided with a restriction mechanism 51 that restricts the movement of the arm portion 31 from the holding position to the separated position, the arm portion 31 is compared with the proximal end side at the holding position. It can suppress that it spreads easily at the front-end | tip part side. As a result, each first stack pin 21 can be stably held.

  In the above-described first embodiment, the configuration in which the pressing mechanism 41, the protrusion 45, and the restriction mechanism 51 are provided for the chuck portions 22 and 23 has been described, but the present invention is not limited thereto. For example, at least any one of the pressing mechanism 41, the protrusion 45, and the restriction mechanism 51 may be employed, or these configurations may not be employed.

(Second Embodiment)
Next, a second embodiment will be described. The second embodiment differs from the first embodiment described above in that a fin receiving fork 100 that temporarily holds the fin molded body 6 is disposed above the first stack portion 15. In the following description, the same components as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.
In the fin stack device 101 shown in FIGS. 11 to 13, a pair of fin receiving forks 100 are provided so as to face each other in the X direction. In addition, since the structure of each fin receiving fork 100 is respectively the same structure, in the following description, one fin receiving fork 100 is demonstrated and description about the other fin receiving fork 100 is abbreviate | omitted.

  As shown in FIGS. 12 and 13, the fin receiving fork 100 includes a plurality of holding portions 102 arranged at intervals in the X direction. These holding portions 102 extend in parallel with each other along the Y direction, and are arranged at positions within the supply position of the fin molded body 6 so as not to overlap the first stack pins 21 in a plan view as viewed from above. It is installed. In addition, the holding unit 102 is detachably accommodated in a recess 104 formed on the lower surface of the molded body supply unit 14 at the standby position of the fin receiving fork 100.

  The fin receiving fork 100 includes the standby position described above, the holding position where the holding portion 102 is located above the upstream chuck portion 22 among the first stack pins 21 (Q1 in FIG. 15), and the holding portion 102 It is possible to move between a retreat position (Q2 in FIG. 15) retreated to the outside in the X direction with respect to the supply position.

  In the fin stack device 101 configured as described above, the fin receiving fork 100 is subjected to fin forming from the molded body supply unit 14 during the above-described second transfer process (when the upstream chuck unit 22 is shifted between the clamping position and the retracted position). It is driven when the body 6 is supplied. Specifically, as shown in FIGS. 14 and 15, the fin receiving fork 100 includes the fin molded body 6 that is supplied from the molded body supply unit 14 in the first transfer process at the final stage among the first transfer processes. At the same time, it descends from the standby position toward the holding position (Q1 in FIG. 15).

  And the upstream chuck | zipper part 22 moves to a retracted position similarly to 1st Embodiment mentioned above, when the fin molded object 6 supplied at the 1st delivery process of the last stage is hold | maintained. Accordingly, the fin molded body 6 held on the upstream chuck portion 22 is transferred onto the downstream chuck portion 23 in the same manner as the second transfer step described above.

On the other hand, the fin molded body 6 newly supplied from the molded body supply unit 14 descends while being guided by the first stack pin 21 while the first stack pin 21 enters the through hole 2 a as it falls. Thereafter, the fin molded body 6 reaches the holding portion 102 of the fin receiving fork 100 and its downward movement is restricted. Thereby, the fin molded body 6 is held on the fin receiving fork 100.
And while the upstream chuck | zipper part 22 returns to a clamping position, the fin molded object 6 cut | disconnected by the cutting part 13 is hold | maintained sequentially by the fin receiving fork 100. FIG.

  After that, when the upstream chuck portion 22 returns to the clamping position, the fin receiving fork 100 moves to the retracted position (Q2 in FIG. 15). As a result, the fin molded body 6 held on the fin receiving fork 100 descends while being guided by the first stack pin 21, thereby being held on the upstream chuck portion 22.

  On the other hand, the fin receiving fork 100 that has moved to the retracted position is held when it reaches the concave portion 104 of the molded body supply section 14 after the holding section 102 has been lifted in a state of retracting outward in the X direction with respect to the supply position. The part 102 is inserted into the recessed part 104 (Q3 in FIG. 15).

Thus, in the present embodiment, the fin molded body 6 can be temporarily held by the fin receiving fork 100 while the upstream chuck portion 22 is in the retracted position. Therefore, when the upstream chuck portion 22 returns from the retracted position to the clamping position, it is possible to suppress the newly supplied fin molded body 6 from passing through the upstream chuck portion 22 or interfering with the upstream chuck portion 22. .
Further, since the supply pitch of the fin molded body 6 can be made faster than the transition speed between the retracted position and the clamping position of the upstream chuck portion 22, further improvement in manufacturing efficiency can be achieved.

  Moreover, since the fin receiving fork 100 can be moved together with the fin molded body 6 along the conveying direction of the fin molded body 6, the newly supplied fin molded body 6 is supplied while the upstream chuck portion 22 is in the retracted position. Can be securely held by the fin receiving fork 100.

(Third embodiment)
Next, a third embodiment will be described. The third embodiment is different from the above-described embodiments in that an inclination suppression mechanism 200 that suppresses the inclination of the first stack pin 21 is provided in the downstream chuck portion 23. In the following description, the same components as those in the above-described embodiments are denoted by the same reference numerals and description thereof is omitted. Moreover, in FIG. 17, illustration of the regulation mechanism 51 mentioned above is abbreviate | omitted.
In the fin stack device 201 shown in FIG. 16 to FIG. 18, the tilt suppressing mechanism 200 is disposed on each fixed plate 202 fixed to each arm portion 31 of the downstream chuck portion 23 and each fixed plate 202. And a holding member 203 that holds the stack pin 21.

  The fixed plate 202 has a plate shape extending along the Y direction, the length in the Y direction is equal to the length of the arm portion 31, and the thickness in the X direction is thinner than the arm portion 31. . A plurality of fixing screws 210 (see FIG. 16) penetrating the arm portion 31 in the Z direction are disposed in the arm portion 31 at intervals in the Y direction, and the fixing plate 202 is connected to the arm portion 31 via these fixing screws 210. It is fixed on the top. The fixing plate 202 is fixed to a portion located on the outer side in the X direction with respect to the housing recess 36 on the arm portion 31. In other words, the fixed plate 202 is disposed so as not to overlap the housing recess 36 in a plan view as viewed from the Z direction.

  In the fixed plate 202, female screw holes 202 a penetrating through the fixed plate 202 in the X direction are arranged at intervals in the Y direction at portions that are equally positioned in the Y direction with the protruding portions 35 and the accommodating recesses 36. .

  The holding member 203 is individually screwed into the female screw hole 202a described above, a nut 212 that is screwed into the holding screw 211 and positions the holding screw 211 with respect to the fixing plate 202, and It has.

  The holding screw 211 includes a long screw 211a that is screwed into the female screw hole 202a corresponding to each protrusion 35 and a short screw 211b that is screwed into the female screw hole 202a corresponding to each housing recess 36 among the female screw holes 202a. And have. That is, the long screws 211 a and the short screws 211 b are alternately arranged in the Y direction in the same arm portion 31, and face each other in the X direction in each arm portion 31.

  The long screw 211 a is screwed into the female screw hole 202 a with its screw tip directed inward in the X direction with respect to the fixed plate 202. The long screw 211a is movable in the X direction as the fixed plate 202 rotates, and the amount of protrusion of the fixed screw 202 inward in the X direction is adjusted. In this case, the long screw 211a moves forward inward in the X direction with respect to the fixed plate 202 with forward rotation (rotation in the direction in which the long screw 211a is screwed). On the other hand, the long screw 211a moves backward toward the outer side in the X direction with respect to the fixed plate 202 in accordance with the reverse rotation (rotation in the direction in which the screwing of the long screw 211a is released).

  The short screw 211 b is screwed into the female screw hole 202 a with its screw tip directed inward in the X direction with respect to the fixed plate 202. The short screw 211b is movable in the X direction in accordance with the rotation with respect to the fixed plate 202, and the amount of protrusion inward in the X direction with respect to the fixed plate 202 is adjusted. In this case, the short screw 211b moves forward inward in the X direction with respect to the fixed plate 202 with forward rotation (rotation in the direction in which the short screw 211b is screwed). On the other hand, the short screw 211b moves backward toward the outer side in the X direction with respect to the fixing plate 202 in accordance with reverse rotation (rotation in a direction in which the screwing of the short screw 211b is released).

  The nut 212 is screwed into a portion positioned between the head and the fixed plate 202 in the shaft portion of each cap screw 211. The nut 212 is screwed to a position where the nut 212 is pressed against the fixing plate 202, thereby positioning each pressing screw 211 with respect to the fixing plate 202. In this case, the protruding amount of the long screw 211a is set so that, for example, the screw tip is arranged at a position equivalent to the inner end surface of the protruding portion 35 in the X direction. Further, the protruding amount of the short screw 211b is set such that, for example, the screw tip is disposed at a position equivalent to the bottom of the housing recess 36.

  In such a configuration, before the operation of the fin stack device 201 during maintenance or the like, the protruding amount of each cap screw 211 is set to the above-described position, for example. Then, a preliminary | backup stacking process is performed by the method similar to each embodiment mentioned above. In this case, at the clamping position of the downstream chuck portion 23, the presser screw 211 is disposed with an interval upward with respect to the downstream chuck unit 23, and the presser screw 211 (long screw 211a and short screw) facing in the X direction. The first stack pin 21 is sandwiched between the screws 211b). Therefore, the fin molded body 6 delivered from the upstream chuck part 22 in the second delivery process is held on the fixed plate 202 fixed on the downstream chuck part 23.

  Further, when the downstream chuck portion 23 moves toward the retracted position, the tilt suppressing mechanism 200 moves toward the outside in the X direction together with the downstream chuck portion 23. As a result, the holding of the first stack pin 21 by the downstream chuck portion 23 and the holding screw 211 is released all at once.

As described above, in the present embodiment, a configuration is provided that includes the tilt suppression mechanism 200 that is disposed at a distance in the Z direction with respect to the downstream chuck portion 23 and holds the first stack pin 21 together with the downstream chuck portion 23. It was.
According to this configuration, the first stack pin 21 is mainly moved in the X direction in a state where the first chuck pin 21 is not clamped by the upstream chuck portion 22 in a second delivery process or the like (a state other than the clamp position). Tilt can be suppressed.
In particular, since the inclination suppressing mechanism 200 can adjust the amount of protrusion inward in the X direction with respect to the downstream chuck portion 23, the first stack pin 21 does not depend on the positional accuracy of the inclination suppressing mechanism 200 with respect to the downstream chuck portion 23. Can be maintained with high accuracy.

  Moreover, in the inclination suppression mechanism 200 of this embodiment, since the holding screw 211 is positioned by the nut 212 screwed to the holding screw 211, the inclination of the first stack pin 21 can be suppressed with a simple configuration.

In the above-described third embodiment, the case where the holding member 203 is configured by the holding screw 211 and the nut 212 has been described, but the present invention is not limited thereto. In other words, the holding member 203 only needs to hold a portion separated in the Z direction with respect to the downstream chuck portion 23 and be able to adjust the amount of protrusion of the downstream chuck portion 23 inward in the X direction. In this case, for example, a pin that penetrates the fixing plate 202 in the X direction and a screw that is screwed to the fixing plate 202 and that abuts the pin from the direction that intersects the X direction and positions the pin with respect to the fixing plate 202. A configuration having a screw may also be used.
Further, in the above-described embodiment, the configuration in which the holding screw 211 is disposed on each fixing plate 202 has been described. However, the holding screw 211 may be disposed on at least one of the fixing plates 202.

  In the above-described third embodiment, the configuration in which the tilt suppression mechanism 200 is disposed upward with respect to the downstream chuck portion 23 has been described. However, the configuration is not limited thereto, and the downstream chuck portion 23 is disposed below. It doesn't matter.

In addition, although each embodiment mentioned above demonstrated the structure by which the through-hole 2a was arrange | positioned between the adjacent fins 2 in the fin molded object 6, it is not restricted to this. That is, between the adjacent fins 2, the through holes 2a may be formed at an equal pitch.
In each of the above-described embodiments, the structure in which a plurality of fins 2 are connected in the width direction in the fin molded body 6 has been described. However, the present invention is not limited thereto, and a single fin 2 may be used as the fin molded body 6. .
Further, the design and modification of the length and width of the fin molded body 6 can be made as appropriate.
That is, the fin stack devices 10 and 101 of the present embodiment can be applied to various fin molded bodies 6.

Further, in each of the above-described embodiments, the configuration in which the first stack pin 21 and the second stack pin 64 are inserted through two through holes 2a of each fin 2 constituting the fin molded body 6 has been described. It is not limited to this. For example, the number and the like of the first stack pins 21 and the second stack pins 64 can be appropriately changed depending on the width and length of the fins 2 and the number of fins 2 constituting the fin molded body 6.
In the above-described embodiment, the configuration in which the arm portion 31 extends in the direction orthogonal to the extending direction of the first stack pin 21 has been described. However, the configuration is not limited thereto, and the first stack pin 21 extends. It does not matter as long as it extends in a direction crossing the direction.

  In the above-described embodiment, the configuration in which the first stack pin 21 and the second stack pin 64 are arranged at positions shifted in a plan view has been described. One stack pin 21 and second stack pin 64 may be arranged.

  Moreover, although 2nd Embodiment mentioned above demonstrated the structure which the fin receiving fork 100 was movable with the fin molded object 6 along the conveyance direction of the fin molded object 6, it is not restricted to this. If the fin molded body 6 is temporarily held while the upstream chuck portion 22 is in the retracted position, the moving direction of the fin receiving fork 100 can be appropriately changed.

According to at least one embodiment described above, by having the first stack part 15 having the first stack pin 21 above the second stack part 16, the fin molded body 6 is formed in the first stack part 15. Since it can hold | maintain temporarily, the taking-out etc. of the fin molded object 6 laminated | stacked on the 2nd stack part 16 can be performed, without stopping conveyance of the fin molded object 6. FIG. Thereby, the improvement of manufacturing efficiency can be aimed at.
In particular, by switching the clamping position and the retracting position of each chuck part 22, 23 in a state where at least one of the chuck parts 22, 23 is at the clamping position, the compact supply part 14 The first stack pin 21 itself moves between the first stack part 15 (the upstream chuck part 22 and the downstream chuck part 23) and between the first stack part 15 and the second stack part 16 to transfer the fin molded body 6 between them. Can be done without. Thereby, the control of the operation timing between the preliminary stacking process and the main stacking process and the simplification of the configuration can be achieved, and the delivery of the fin molded body 6 can be reliably performed.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1,101 ... Fin stack apparatus (manufacturing apparatus of a heat exchanger), 2 ... Fin, 2a ... Through-hole, 6 ... Fin molded object (fin), 15 ... 1st stack part, 16 ... 2nd stack part, 21 ... 1st stack pin, 22 ... Upstream chuck part, 23 ... Downstream chuck part, 31 ... Arm part, 32 ... Base part, 35 ... Projection part (clamping part), 43 ... Biasing member, 64 ... 2nd stack pin, 100 ... Fin receiving fork

Claims (8)

A first stack portion that has a first stack pin inserted into a through-hole of a fin that is continuously supplied and holds the fin;
A second stack part disposed below the first stack part, to which the fins held by the first stack part are passed, and
The first stack part includes:
An upstream chuck portion that is movable between a holding position for holding the fin by holding the first stack pin, and a retracting position for retracting from the first stack pin and delivering the fin downward; ,
Among the first stack pins, the lower part is clamped with respect to the clamping position by the upstream chuck portion, the clamping position for holding the fins, and the first stack pins are retracted to deliver the fins downward. A downstream chuck portion that is movable between the retracted positions,
The upstream chuck portion and the downstream chuck portion are apparatus for manufacturing a heat exchanger configured to be able to switch between a sandwiching position and a retracted position in a state where at least one of the chuck portions is in a sandwiching position.   2. The heat exchanger manufacture according to claim 1, wherein a fin receiving fork for holding the fin is disposed above the first stack portion while the upstream chuck portion returns from the retracted position to the clamping position. apparatus.   The heat exchanger manufacturing apparatus according to claim 2, wherein the fin receiving fork is movable downward toward a holding position for holding the fin. The second stack part includes a second stack pin inserted into the through hole different from the first stack pin among the through holes formed in the fin,
The second stack pin is configured to be movable between a wrap position where the second stack pin wraps in the vertical direction with respect to the first stack pin and a standby position where the second stack pin is retracted from the first stack pin. The manufacturing apparatus of the heat exchanger of any one of claim | item 3. The upstream chuck portion and the downstream chuck portion are
A pair of arms extending in a direction intersecting with the extending direction of the first stack pins and holding the plurality of first stack pins together;
A base that supports a base end of the arm;
A biasing member that is disposed at a sandwiching portion of the first stack pin among the arm portions and biased toward the first stack pin; and
Among the biasing members, the biasing member positioned on the distal end side of the arm portion has a spring constant set larger than that of the biasing member positioned on the proximal end side of the arm portion. The apparatus for manufacturing a heat exchanger according to any one of claims 1 to 4. The first stack portion is fixed to the downstream chuck portion and can move integrally with the downstream chuck portion, and the first stack pin is vertically movable with respect to a holding position by the downstream chuck portion of the first stack pin. Equipped with a tilt suppression mechanism that holds the separated parts,
6. The heat exchange according to claim 1, wherein the tilt suppressing mechanism is configured such that an amount of protrusion toward the first stack pin with respect to the downstream chuck portion can be adjusted. Manufacturing equipment. The tilt suppression mechanism is
A fixed plate fixed to the downstream chuck portion;
A holding screw that is screwed into the fixing plate and that holds the first stack pin at its screw tip so as to be movable in a direction intersecting the extending direction of the first stack pin;
The apparatus for manufacturing a heat exchanger according to claim 6, further comprising a nut that is screwed to the holding screw and positions the holding screw with respect to the fixing plate. A preliminary stacking step of temporarily holding the fins in the first stack part;
A main stacking step of transferring the fins held in the first stack part to a second stack part disposed below the first stack part,
The preliminary stacking process includes
A first delivery step of delivering the fins to an upstream chuck portion that sandwiches the first stack pin of the first stack portion;
A second delivery step of delivering the fin held by the upstream chuck part to a downstream chuck part that sandwiches the first stack pin below the upstream chuck part.

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