JP2012030284A - Method and apparatus for manufacturing heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for quickly manufacturing a heat exchanger at a low manufacturing cost without causing such defects as fin deformation or fin pitch disorder, and to provide an apparatus for manufacturing the same.SOLUTION: The method for manufacturing a heat exchanger is provided for mounting fins by moving a tube 1 in the longitudinal direction continuously at a predetermined speed or intermittently at a predetermined pitch relative to the fins to be mounted. The apparatus for manufacturing the heat exchanger is provided for mounting the fins on the outer periphery of the tube 1 by fitting the tube 1 into a tube insertion groove of the fins held at a fin holder 121, and mounting a plurality of fins on the outer periphery of the tube 1 at a predetermined pitch by sequentially mounting the fins according to the relative movement between the tube 1 and the fin holder 121.

Description

  The present invention relates to a method and an apparatus for manufacturing a heat exchanger in which a plurality of plate-shaped fins are mounted on the outer peripheral surface of a tube through which a fluid such as a refrigerant flows.

  As is well known, a heat exchanger used in an air conditioner or the like has a flat cross section and a tube as a refrigerant tube through which a fluid such as a refrigerant flows, and a plurality of tubes mounted on the outer peripheral surface of the tube. And a plate-like fin for heat exchange. Such a heat exchanger is usually referred to as a fin-and-tube heat exchanger, but in the following description, it is simply referred to as a heat exchanger. Conventionally, as a method of manufacturing a heat exchanger, after laminating a plurality of plate-like heat exchange fins provided with insertion holes at appropriate intervals, a tube having a flat cross section is inserted into the tube insertion hole. The method of inserting in is used (for example, refer patent document 1, 2).

Japanese Patent Laid-Open No. 10-89870 Japanese Utility Model Publication No. 5-90173

  In the above-described conventional heat exchanger manufacturing method and manufacturing equipment, a plurality of plate-like fins are arranged in advance with a predetermined pitch secured, and the cross section is formed flat in the insertion hole provided in the fin. However, it is necessary to arrange a plurality of fins with a predetermined pitch, which increases manufacturing time. In addition, when the tube is inserted into the fin insertion hole, the fins are deformed by the force applied to the fins, or the pitch of the plurality of fins arranged is disturbed, the ventilation resistance is increased, and the performance of the heat exchanger is reduced.

  Therefore, in order to prevent the above-described deformation of the fins and disturbance of the pitch of the fins, it is necessary to use a spacer jig between the fins. In this case, depending on the heat exchanger model, one heat exchanger is used. In some cases, the fin pitch is not the same due to the difference in the number of fins used. Therefore, in order to manufacture heat exchangers with different fin pitches, the number of parts increases, the setup change time of manufacturing increases, and further, the maintenance cost of the spacer jig to cope with different fin pitches is enormous. There was a problem of becoming.

  This invention was made in order to solve the problems in the conventional heat exchanger manufacturing method and manufacturing apparatus as described above, without causing deformation of the fins, disturbance of the fin pitch, etc. And it aims at providing the manufacturing method and manufacturing apparatus of a heat exchanger which can be manufactured rapidly at low manufacturing cost.

  The method of manufacturing a heat exchanger according to the present invention is a method of manufacturing a heat exchanger in which a plurality of fins are attached to the outer peripheral surface of a tube through which a fluid flows inside at a predetermined interval in the length direction of the tube. The tube is continuously moved at a predetermined speed in the length direction of the tube relative to the fin to be mounted, and a plurality of the tubes to be mounted on the outer peripheral surface of the moving tube. The fins are sequentially attached at predetermined time intervals.

  Also, the manufacturing method of the heat exchanger according to the present invention is a heat exchanger in which a plurality of fins are attached to the outer peripheral surface of a tube through which a fluid flows inside at a predetermined interval in the length direction of the tube. In the manufacturing method, the tube is continuously moved at a predetermined speed in the length direction of the tube relative to the fin to be attached, and the fin holding portion holding the fin to be attached is moved. By doing so, the fins held by the fin holding part are sequentially mounted on the outer peripheral surface of the moving tube through a predetermined time interval, and the mounted fins are mounted each time the sequential mounting is performed. Further, it is characterized in that it is maintained at a position on the outer peripheral surface of the attached tube by a fin attachment maintaining part.

  Furthermore, the method of manufacturing a heat exchanger according to the present invention provides a heat exchanger in which a plurality of fins are attached to the outer peripheral surface of a tube through which a fluid is circulated in the length direction of the tube at a predetermined interval. In the manufacturing method, the tube is moved intermittently at a pitch corresponding to the predetermined interval in the length direction of the tube relative to the fin to be mounted, and the tube is intermittently moved. The plurality of fins to be mounted are sequentially mounted on the outer peripheral surface of the tube at each stop during movement.

  Also, the manufacturing method of the heat exchanger according to the present invention is a heat exchanger in which a plurality of fins are attached to the outer peripheral surface of a tube through which a fluid flows inside at a predetermined interval in the length direction of the tube. In the manufacturing method, the tube is moved intermittently at a pitch corresponding to the predetermined interval in the length direction of the tube relative to the fin to be mounted, and the fin to be mounted is held. By moving the fin holding portion, the fins held by the fin holding portion are sequentially attached to the outer peripheral surface of the moving tube through a predetermined time interval, and the attached fins are Each time the tubes are sequentially attached, the fin attachment maintaining portion maintains the tube at a position on the outer peripheral surface of the attached tube.

  In addition, a heat exchanger manufacturing apparatus according to the present invention includes a tube that allows a fluid to flow therein, and a fin that is fitted to the outer peripheral surface of the tube so that the tube insertion groove is fitted to the tube. A fin holding part capable of holding a fin to be attached to the tube, a tube holding part capable of holding the tube to which the fin is to be attached, the fin holding part and the tube holding part And a drive unit that relatively moves in the length direction of the held tube, and the fin holding unit holds the fin and fits the tube insertion groove into the tube. Are mounted on the outer peripheral surface of the tube, and a plurality of fins are mounted on the outer peripheral surface of the tube at predetermined intervals by sequentially performing the mounting in response to the movement. It is characterized in.

  Furthermore, a heat exchanger manufacturing apparatus according to the present invention includes a tube that allows a fluid to flow therein, and a fin that is fitted to the outer peripheral surface of the tube with a tube insertion groove fitted to the tube. A fin holding part capable of holding a fin to be attached to the tube, a tube holding part capable of holding the tube to which the fin is to be attached, the fin holding part and the tube holding part And a fin for maintaining the fin mounted on the outer peripheral surface of the tube at a position on the outer peripheral surface of the mounted tube. An attachment maintaining portion, and the fin holding portion holds the fin and fits the tube insertion groove into the tube to remove the fin from the tube. A plurality of fins are mounted on the outer peripheral surface of the tube at a predetermined interval by mounting on a surface and sequentially performing the mounting corresponding to the movement, and the fin mounting maintaining unit In synchronization with the mounting of the fin by the holding portion, the mounted fin is maintained at a position on the outer peripheral surface of the mounted tube each time the fin is sequentially mounted on the outer peripheral surface of the tube. It is comprised as follows.

  According to the heat exchanger manufacturing method of the present invention, the tube is continuously moved at a predetermined speed in the length direction thereof relative to the fin to be attached, and the attachment is performed on the outer peripheral surface of the moving tube. Since the fins to be installed are mounted at predetermined time intervals, the fins are not deformed, the fin pitch is not disturbed, and the like, and the heat exchanger can be quickly manufactured at a low manufacturing cost.

  Further, according to the method of manufacturing a heat exchanger according to the present invention, the tube is continuously moved at a predetermined speed in the length direction relative to the fin to be mounted, and the fin to be mounted is held. By moving the fin holding part, the fins held by the fin holding part are sequentially attached to the outer peripheral surface of the moving tube through a predetermined time interval, and the attached fins are The fin mounting maintenance part maintains the position on the outer peripheral surface of the mounted tube every time it is sequentially mounted, so that the fin mounting position is stable, preventing deformation of the fin or disturbance of the fin pitch. In addition, the heat exchanger can be quickly manufactured at a low manufacturing cost.

Further, according to the method of manufacturing a heat exchanger according to the present invention, the tube is moved intermittently at a pitch corresponding to a predetermined interval in the length direction relative to the fin to be mounted. Since the fins to be mounted are mounted on the outer peripheral surface of the tube at the time of stopping during the intermittent movement, the fins are not deformed, the fin pitch is not disturbed, and the like is inexpensive. The heat exchanger can be manufactured quickly and at a low cost.

  Furthermore, according to the method of manufacturing a heat exchanger according to the present invention, the tube is moved intermittently at a pitch corresponding to the predetermined interval in the length direction relative to the fin to be mounted, and the mounting is performed. By moving the fin holding part holding the fins to be moved, the fins held by the fin holding part are sequentially attached to the outer peripheral surface of the moving tube through a predetermined time interval, and the attached Each time the fins are sequentially attached, the fin attachment maintenance unit maintains the fins at a position on the outer peripheral surface of the attached tube, so that the fin attachment position is stabilized, The disturbance of the fin pitch can be prevented, and the heat exchanger can be quickly manufactured at a low manufacturing cost.

  According to the heat exchanger manufacturing apparatus of the present invention, the fin holding part that can hold the fin to be attached to the tube, the tube holding part that can hold the tube to which the fin is to be attached, and the fin A drive unit that moves the holding unit and the tube holding unit relative to each other in the length direction of the held tube, and the fin holding unit holds the fin and the tube insertion groove in the tube. The fins are mounted on the outer peripheral surface of the tube by fitting, and the plurality of fins are mounted on the outer peripheral surface of the tube at predetermined intervals by sequentially performing the mounting corresponding to the movement. Therefore, the deformation of the fins, the disturbance of the fin pitch, and the like do not occur, and the heat exchanger can be reliably and quickly manufactured at a low manufacturing cost.

Further, according to the heat exchanger manufacturing apparatus of the present invention, the fin holding portion that can hold the fin to be attached to the tube, the tube holding portion that can hold the tube to which the fin is to be attached, and the fin A drive unit that moves the holding unit and the tube holding unit relative to each other in the length direction of the held tube, and the fin that is mounted on the outer peripheral surface of the tube, and the outer peripheral surface of the mounted tube A fin attachment maintaining portion that maintains the fin in the upper position, and the fin holding portion attaches the fin to the outer peripheral surface of the tube by holding the fin and fitting the tube insertion groove into the tube. In addition, a plurality of fins are mounted on the outer peripheral surface of the tube at predetermined intervals by sequentially performing the mounting in response to the movement, and the fins Each time the fins are sequentially mounted on the outer peripheral surface of the tube in synchronization with the mounting of the fins by the fin holding unit, the attachment maintaining unit is connected to the outer periphery of the mounted tube. Since it is configured to maintain the position on the surface, the mounting position of the fins can be stabilized, the deformation of the fins or the disturbance of the fin pitch can be prevented, and the heat exchanger can be quickly produced at a low manufacturing cost. Can be manufactured.

It is a perspective view which shows the heat exchanger using the flat tube manufactured with the manufacturing method and manufacturing apparatus of this invention. It is a top view which shows the fin in the heat exchanger manufactured with the manufacturing method and manufacturing apparatus of the heat exchanger of this invention. It is a conceptual diagram which shows the manufacturing method and manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing which shows the specific structure of the manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing which shows a part of manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing of the rotary joint in the manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention.

It is explanatory drawing which shows a part of manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing which shows a part of manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing explaining operation | movement of the manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing which shows operation | movement of the manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing which shows a part of manufacturing method and manufacturing apparatus of the heat exchanger by Embodiment 3 of this invention.

It is explanatory drawing which shows a part of manufacturing apparatus of the heat exchanger by Embodiment 4 of this invention. It is explanatory drawing which shows a part of manufacturing apparatus of the heat exchanger by Embodiment 5 of this invention. It is explanatory drawing which shows a part of manufacturing apparatus of the heat exchanger by Embodiment 7 of this invention. It is a conceptual diagram which shows the manufacturing method and manufacturing apparatus of the heat exchanger by Embodiment 7 of this invention. It is explanatory drawing which shows operation | movement of the manufacturing apparatus of the heat exchanger by Embodiment 7 of this invention.

It is a front view which shows the fin material in press processing in the heat exchanger manufactured with the manufacturing method and manufacturing apparatus of the heat exchanger by Embodiment 8 of this invention. It is a schematic block diagram which shows the manufacturing apparatus of the heat exchanger by Embodiment 8 of this invention. It is explanatory drawing explaining operation | movement of the manufacturing apparatus of the heat exchanger by Embodiment 8 of this invention. It is a block diagram which shows the manufacturing method and manufacturing apparatus of a heat exchanger by Embodiment 9 of this invention.

  FIG. 1 is a perspective view showing a heat exchanger using a tube having a flat cross section manufactured by the manufacturing method and manufacturing apparatus of the present invention. In FIG. 1, a heat exchanger 100 is a fin-and-tube heat exchanger, and includes a tube 1 and a fin 2. The tube 1 is inserted into a tube insertion groove 21 provided in the fin 2. They are joined together. The fins 2 have a flat plate shape and are stacked in parallel at regular intervals. A plurality of tubes 1 having a flat cross section are arranged in parallel, and a fluid such as water or a refrigerant flows through each of the tubes 1.

  FIG. 2 is a plan view showing fins in the heat exchanger manufactured by the method and apparatus for manufacturing a heat exchanger according to the present invention. As shown in FIG. 2, substantially U-shaped tube insertion grooves 21 are formed at predetermined intervals in the fin 2, and slits 22 are respectively formed in the surfaces 220 partitioned by the tube insertion grooves 21. , 23 are formed. And on the same surface side of the fin 2, a fin collar (not shown) for bringing the tube 1 and the fin 2 into close contact with each other along the edge of each tube insertion groove 21 rises vertically. Is formed. The slits 22 and 23 and the fin collar protrude in the same direction with respect to the surface of the fin 2.

  On the other hand, as described above, fluid such as refrigerant flows inside the tube 1, but by making the cross section flat, the amount of fluid such as refrigerant can be increased without increasing ventilation resistance, Thereby, even when it is downsized, sufficient performance as a heat exchanger can be obtained.

  The fin 2 is arrange | positioned ranging over the several tube 1 arranged in parallel, and when the tube 1 is inserted in each tube insertion groove | channel 21, it mounts | wears with the outer peripheral surface of the some tube 1. FIG. As shown in FIG. 1, a plurality of fins 2 formed in the same shape are attached to the outer peripheral surfaces of a plurality of tubes 1 with a predetermined interval. The number of fins 2 is generally several hundred or more in a heat exchanger used in an air conditioner. The heat exchanger configured as described above cools the atmosphere by removing the heat of evaporation from the atmosphere via the tube 1 and the plurality of fins 2 when the fluid flowing in each tube 1 is vaporized. .

  The fin material for forming the fin 2 is generally an aluminum thin plate wound around a reel in a hoop shape having a thickness of “0.1” to “0.7” [mm], or a sheet shape. The formed fin material is used. The fins 2 are formed one by one by sequentially separating a large number of fins formed into a predetermined shape from a hoop-like or sheet-like fin material using a progressive press device. In addition, the fin 2 may be formed for every sheet | seat by apparatuses other than a progressive press apparatus.

Embodiment 1 FIG.
Next, a method and apparatus for manufacturing a heat exchanger according to Embodiment 1 of the present invention will be described. FIG. 3 is a conceptual diagram showing a heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 1 of the present invention. In FIG. 3, the drum 122 rotates around the axis X in the direction of arrow A, that is, in the clockwise direction in FIG. Eight fin holding portions 121 are provided on the peripheral portion of the drum 122 at predetermined intervals in the circumferential direction of the drum 122.

  Each fin holding portion 121 performs a circular motion around the axis of the shaft 126 as the drum 122 rotates, but receives and holds one fin 2 when reaching the top in the vertical direction. When the lowermost part in the vertical direction is reached, the held fin 2 is attached to the outer peripheral surface of the tube 1.

As will be described later, the fin 2 is held by the fin holding portion 121 by, for example, so-called vacuum suction, in which the fin 2 is sucked using air suction. The fin holding part 121 is connected to a cam follower 124 described later.

  In addition, the standing angle with respect to the drum 122 of each fin holding | maintenance part 121 in FIG. 3 is shown typically.

  The tube 1 is held so that the major axis direction of the cross section is vertical, and moves in the direction of arrow B at a predetermined speed. The tube 1 may be fixed and the drum 122 may be moved in the direction opposite to the arrow B.

  As described above, the drum 122 is rotated at a predetermined speed in the direction of the arrow A, and the eight fin holding portions 121 are sequentially rotated every [1/8] rotation of the drum 122, that is, at predetermined time intervals. The fin 2 is attached to the outer peripheral surface of the tube 1 that has reached the lowest position of the drum 122 shown in FIG. Accordingly, a constant interval is always maintained between the fins 2 that are sequentially mounted on the outer peripheral surface of the tube 1 by the fin holding portion 121.

  According to the method of manufacturing a heat exchanger according to Embodiment 1 of the present invention, the distance between the fins 2 can be changed by changing the moving speed of the tube 1 in the B direction, changing the rotational speed of the drum 122, or both. Can be set arbitrarily.

  FIG. 4 is an explanatory view showing a specific configuration of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention. For convenience of explanation, FIG. 4 shows only one of the eight fin holding portions 121 shown in FIG. 3, but the other seven fin holding portions 121 are the fins shown in FIG. The configuration is the same as that of the holding unit 121.

  In FIG. 4, a pair of drums 122 arranged at intervals is fixed to a shaft 126 that is rotatably supported by a pair of support portions 174, and as the shaft 126 rotates. Rotate. In the first embodiment, the shaft 126 and the drum 122 rotate clockwise as viewed from the right direction in FIG. The shaft 126 is connected to a motor 128 via a coupling 127 and is driven by the motor 128 to rotate at a predetermined speed.

  As for the fin holding | maintenance part 121, the rotating shaft 129 is rotatably supported by each of a pair of drums 122 via a bearing. The pair of cam followers 124 are located outside the respective drums 122 and are connected to the end portions of the rotation shafts 129 of the fin holding portions 121 via connecting plates 1241. A pair of cam members 123 formed in the same shape are disposed outside the respective drums 122, are fixed by the support portions 174, and are always stationary.

  When the fin holding part 121 reaches the lowermost part in the substantially vertical direction as the drum 122 rotates, the cam follower 124 comes into contact with a later-described raised surface provided on the peripheral surface of the cam member 123, and then the drum 122. The fin holding portion 121 is rotated by a predetermined angle in the counterclockwise direction when viewed from the right in FIG.

  One end of the torsion spring 125 is fixed to the drum 122 and the other end is fixed to the fin holding portion 121. The torsion spring 125 constantly biases the fin holding portion 121 clockwise as viewed from the right in FIG. Accordingly, the cam follower 124 is pressed against the raised surface of the cam member 123 by the biasing force of the torsion spring 125, and rolls on the circumferential surface of the raised surface while the drum 122 rotates by a predetermined angle.

  By using the cam member 123 and the cam follower 124, the timing of performing the movement of the fin holding portion 121 to dodge the fins 2 inserted into the tube 1 as described later is reduced. An exchange can be obtained.

  The rotary joint 156 controls connection or disconnection of a vacuum path composed of a pipe 1551 connected to a vacuum pump, which will be described later, and a pipe 1552 connected to the fin holding unit 121 according to the rotation angle of the drum 122.

  FIG. 5 is an explanatory view showing a part of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention, and includes a motor 128, a coupling 127, a drum 122, a fin holding portion 121, a cam member 123, a cam follower 124, and a twist. Only the spring 125 is extracted from FIG. 4 so that the mutual relationship between these parts can be easily understood.

  Next, the configuration of the rotary joint 156 described above will be described. 6A and 6B are explanatory views of a rotary joint in the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention. FIG. 6A is an explanatory view showing an axial section of the rotary joint, and FIG. Explanatory drawing which shows the plane of a 1st partition plate, (c) is explanatory drawing which shows the plane of the 2nd partition plate mentioned later.

  In FIG. 6A, the fixing portion 163 of the rotary joint 156 is directly or indirectly fixed to the aforementioned support portion 174, has a substantially U-shaped cross section, and is a through-hole provided in the center portion. A through hole 1632 is provided at a lower portion in the vertical direction with the hole 1631. The end of the shaft 126 driven by the motor 128 is inserted into the through hole 1631 of the fixed portion 163. The through hole 1633 is connected to a pipe 1551 connected to a vacuum pump via a joint 1553. The sealing member 1632 is inserted between the inner peripheral surface of the through hole 1631 of the fixing portion 163 and the outer peripheral surface of the shaft 126, and hermetically seals the inside and the outside of the fixing portion 163.

  The first partition plate 164 has an outer peripheral surface fixed to the inner peripheral surface of the fixing portion 163, and a through hole 1641 through which the shaft 126 passes is provided in the central portion. The sealing member 1642 is inserted between the inner peripheral surface of the through hole 1641 of the first partition plate 164 and the outer peripheral surface of the shaft 126, and hermetically seals the inside and the outside of the fixed portion 163. As shown in FIG. 6B, the first partition plate 164 has a through-hole 1643 extending in an arc shape in the vicinity of the outer peripheral edge thereof. The through-hole 1643 extends in the counterclockwise direction within an angle range of approximately 250 degrees from the position of the lowest vertical portion of the first partition plate 164.

  The rotating part 161 is fixed to the shaft 126 and rotates together with the shaft 126. A through hole 1611 provided on the center side of the fixed portion 161 is connected to a pipe 1552 connected to the fin holding portion 121 via a joint 1554.

  The second partition plate 162 is fixed to the rotating part 161 and rotates integrally with the shaft 126 and the rotating part 161. As shown in FIG. 6C, the second partition plate 162 includes eight through-holes 1621 extending from the vicinity of the center portion to the vicinity of the outer peripheral edge portion. These through-holes 1621 are formed radially at equal intervals, and their installation positions correspond to the installation positions of the eight fin holding portions 121 shown in FIG. One surface of the second partition plate 162 is in contact with one surface of the first partition plate 164, and the second partition plate 162 rotates so that the surfaces slide while maintaining airtightness. Move. The second partition plate 162 is made of resin for buffering friction between the inner peripheral surface of the fixed portion 163 and the first partition plate 164.

When the through-hole 1621 provided in the second partition plate 162 and the arc-shaped through-hole 1643 of the first partition plate 164 are at least partially overlapped, the pipe 1551 connected to the vacuum pump is , The inside of the joint 1553, the fixing portion 163, the through long hole 1643 of the first partition plate 164, the through long hole 1621 of the second partition plate 162, and the pipe connected to the fin holding portion 121 via the joint 1554 1552.

  On the other hand, when the through-hole 1621 provided in the second partition plate 162 and the arc-shaped through-hole 1643 of the first partition plate 164 are not overlapped at all, the pipe 1551 and the pipe 1552 are It is blocked by the first partition plate 164.

  When the drum 122 rotates, the piping 1552 and the through long hole 1621 of the second partition plate 162 move in the circumferential direction, but the through long hole 1643 of the first partition plate 164 does not move. Accordingly, the positions of these through holes are shifted and the through holes 1621 and the through holes 1643 are blocked in a certain phase section. By setting the position of the through long hole 1643 so that the vacuum path is interrupted when the fin gripping part 121 reaches the fin insertion position, the fin mounting position of the fin 2 is shifted by the suction force after the fin is inserted into the tube 1. To prevent that.

  FIG. 7 is an explanatory view showing a part of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention, and shows a vacuum path from the vacuum pump 157 to the fin holding part 121 via the pipes 1551 and 1552. . The fin holding portion 121 includes U-shaped grooves 151 as eight groove portions formed at equal intervals, and seven suction holes 154 that open on one surface of the fin holding portion 121 between the U-shaped grooves 151. And an internal passage 152 that is formed inside the fin holding portion 121 and communicates with each of the aforementioned suction holes 154 and the joint 1555.

  As described above, when the through long hole 1643 in the first partition plate 164 and the through long hole 1621 overlap the second partition plate 162 in the first position of the rotary joint 156, the pipe 1551 is operated by the operation of the vacuum pump 157. The air is sucked into the vacuum pump 157 from the respective suction holes 154 through the joint 1553, the rotary joint 156, the pipe 1552, the joint 1555, and the internal passage 152 of the fin holding portion 121.

  The fin 2 is held in the fin holding portion 121 by air being sucked from the suction hole 154 of the fin holding portion 121, and the connection between the pipe 1551 and the pipe 1552 is cut off by the rotary joint 156 as described above. When air is no longer sucked from 154, it is released from being held by the fin holding portion 121.

  The fin 2 is held by the fin holding portion 121 such that the eight tube insertion grooves 21 overlap the U-shaped groove 151 of the fin holding portion 121. Since the width dimension of the U-shaped groove 151 is slightly larger than the width dimension of the tube insertion groove 21 of the fin 2, when the fin 2 is inserted into the tube 1, the inner wall of the fin holding portion 121 is The fin collar formed at the peripheral edge of the tube insertion groove 21 of the fin 2 is restrained so as not to leave the outer peripheral surface of the tube 1.

  Next, the tube holding stage 140 shown in FIG. 4 will be described. In FIG. 4, the first support member 1741 is movably mounted on a pair of fixed linear guides 141. The second support member 1742 is supported on the first support member 1741 via the four air cylinders 144. The plurality of tubes 1 are placed on the upper surface of the second support member 1742 so that the length direction thereof coincides with the direction in which the linear guide 141 extends. Moreover, these tubes 1 are mounted so that the major axis of the cross section thereof coincides with the vertical direction.

The ball screw 142 is connected to the output shaft of the motor 143 and is driven by the motor to rotate in a predetermined direction at a predetermined speed. The first support member 1741 is connected to the ball screw 142 via the nut member 1421 and moves at a predetermined speed in the left direction when viewed from the right direction in the drawing by the rotation of the ball screw 142 in the predetermined direction. The aforementioned air cylinder 144 adjusts the vertical height of the second support member 1742. FIG. 8 is an explanatory view showing a part of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention, and shows the stage portion 140 extracted from FIG.

  In FIG. 4, the height of the second support member 1742 in the stage unit 140 is shown as a height at which the tube 1 is not inserted into the U-shaped groove 151 of the fin holding unit 121 positioned at the lowest in the vertical direction. However, during the operation of the heat exchanger manufacturing apparatus, the height of the second support member 1742 of the stage unit 14 is such that the tube 1 is inserted into the U-shaped groove of the fin holding unit 121 by the air cylinder 144. Is set.

  Next, the operation of the heat exchanger manufacturing method according to Embodiment 1 of the present invention configured as described above will be described. FIG. 9 is an explanatory view for explaining the operation of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention. (A) is a state immediately before the fin 2 is mounted on the outer peripheral surface of the tube 1, and (b). Is the state when the fin 2 is mounted on the outer peripheral surface of the tube 1, (c) is the state immediately after mounting the fin 2 on the outer peripheral surface of the tube 1, and (d) is a further time elapsed from the state of (c). Each state is shown. FIG. 9 shows only one of the eight fin holders 12 for the convenience of explanation, and shows the operating state.

  When the fin holding portion 121 is positioned at the uppermost portion in the vertical direction of the drum 122, as described above, the through long hole 1621 of the second partition plate 162 corresponding to the fin holding portion 121 is provided in the first partition. The pipe 1551 and the pipe 1552 are in a connected state because they overlap with the through-hole 1643 of the plate 164, and the suction hole 154 of the fin holding portion 121 sucks air.

  One fin 2 supplied from a fin supply part (not shown) is supplied to the fin holding part 121 at the position of the uppermost part of the drum 122, and the tube insertion groove 21 of the fin 2 serves as a fin holding part. The fin 2 is attracted and held by the fin holding portion 121 in a state of being superimposed on the U-shaped groove 151. As the drum rotates, the eight fin holders 121 sequentially reach the top of the drum 122 at a predetermined time interval, and the fins 2 are supplied one by one and held in sequence. 9, the position shown in FIG. 9A is reached by a clockwise circular motion.

  When the fin holding part 121 holding the fin 2 reaches the position shown in FIG. 9A, a part of the tube 1 is inserted into the tube insertion groove 21 of the fin 2 held by the fin holding part 12 and the fin holding part. It will be in the state fitted in 121 U-shaped groove 151. At this time, the cam follower 124 of the fin holding portion 121 is in a position in contact with or not in contact with the flat surface 1231 of the cam member 123, but is upright with respect to the peripheral surface of the drum 122.

  Next, when the fin holding portion 121 reaches the position shown in FIG. 9B as the drum 122 rotates, the cam follower 124 of the fin holding portion 12 reaches the raised surface 1232 of the cam member 123 and the fin holding portion. 12 is in a state where the width direction of the fin 2 substantially coincides with the vertical direction, the tube 1 is completely fitted in the tube insertion groove 21, and the fin 2 is placed on the outer peripheral surface of the tube 1. Installed.

At this time, the through long hole 1621 of the second partition plate 162 of the rotary joint 156 partially overlaps the through long hole 1643 of the first partition plate 164 as shown in FIG. Although the pipe 1551 and the pipe 1552 are connected, the drum 122 further rotates in the clockwise direction from that state, so that the through long hole 1621 does not overlap the through long hole 1643. The connection between 1551 and the pipe 1552 is cut off, and the fin holding portion 121 ends the holding of the fin 2.

  When the drum 122 further rotates in the clockwise direction from the state of FIG. 9B, the cam follower 124 is pushed up with the cam follower 124 contacting the raised surface 1232 of the cam member 123, and the fin holding unit 121 By rotating counterclockwise about the rotation axis 129, the fin 2 mounted on the outer peripheral surface of the tube 1 is separated from the tube 1 as shown in FIG.

  When the drum 122 further rotates and the fin holding portion 121 reaches the position shown in FIG. 9D, the fin holding portion 121 further moves away from the fin 2 attached to the tube 1, and thereafter As the drum 122 rotates, the drum 122 moves toward the top of the drum 122. Then, when the top of the drum 122 is reached again, new fins 2 are again supplied by the fin supply unit and held.

  FIG. 10 is an explanatory view showing the operation of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention, and shows an operation curve of the fin holding portion 121 by the cam member 123 and the cam follower 124 as seen from the apparatus axial direction. When the cam follower 124 traces the circumferential surface of the cam member 123 in the direction of arrow A as the drum 122 rotates, the angle of the fin holding portion 121 with respect to the drum 122 according to the curve of the circumferential surface of the cam member 123 is 121a → 121b as illustrated. → Changes to 121c. By sequentially changing the radius of the cam member 123, the fin holding portion 121 can be operated so as to dodge the fin 2 inserted into the tube 1.

  As shown in FIG. 3 described above, the drum 122 is provided with eight fin holding parts 121 in the first embodiment, and each fin holding part 121 sequentially performs the operations described with reference to FIG. On the other hand, stage 140 is driven by motor 143 as described above and moves in the direction of arrow B at a predetermined speed. As a result, the fins 2 are sequentially and continuously mounted at a predetermined interval on the outer peripheral surface of the tube 1 to manufacture the heat exchanger shown in FIG.

  As described above, according to the method and apparatus for manufacturing a heat exchanger according to Embodiment 1 of the present invention, the tube is continuously moved at a predetermined speed in the length direction with respect to the fin to be mounted, Since the fins to be attached to the outer peripheral surface of the moving tube are attached at predetermined time intervals, the fins can be inserted into the tube one by one at a predetermined position. A heat exchanger free from deformation and pitch disturbance can be manufactured.

  Moreover, the heat exchanger corresponding to various fin pitches can be easily manufactured by changing the amount of stage movement. The adhesion between the fins and the refrigerant pipe can be improved.

  Furthermore, after the fin holding part inserts the fin, it is possible to dodge the fin without changing the operation direction, and the heat exchanger manufacturing apparatus can be realized with a simple configuration.

  In addition, the fin holding part can grip the fin by vacuum suction, and the vacuum suction can be stopped at the fin insertion position by the partition plate in the vacuum path to release the fin. At this time, it is possible to avoid the fin pitch from being disturbed by the movement of the fin position after insertion due to the suction force.

Embodiment 2. FIG.
In the heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 1 described above, the tube is continuously moved at a predetermined speed in the length direction with respect to the fin to be mounted, and is mounted on the outer peripheral surface of the moving tube. The power fins are attached at predetermined time intervals. However, in the heat exchanger manufacturing method and the manufacturing apparatus according to the second embodiment, the tubes are attached to the fins to be attached at predetermined intervals in the length direction. The fins to be attached are attached to the outer peripheral surface of the tube at the time of stopping while the tube is intermittently moved at the pitch. The configuration of the heat exchanger manufacturing apparatus according to the second embodiment is the same as that of the heat exchanger manufacturing apparatus according to the first embodiment described above except that the apparatus moves intermittently.

  When the heat exchanger manufacturing method and the manufacturing apparatus according to Embodiment 2 manufacture the heat exchanger 100 shown in FIG. 1, the drum 122 is rotated in the clockwise direction in FIG. 3, FIG. 9, and FIG. The fin holding part 121 is moved upward in the vertical direction of the drum 122, and the fin 2 is held at that position by vacuum suction. Next, the stage 140 is moved, and the tube 1 is moved to the insertion position of the first fin.

  Thereafter, the drum 122 is rotated once, and the fin 2 is inserted into the outer peripheral surface of the tube 1. At the same time, the stage is moved by a predetermined fin pitch value. While the first fin 2 is being inserted, the second fin 2 is supplied to the subsequent fin holding portion 121, and the drum is rotated again to move the fin holding portion 121 to the insertion position. Move the stage by the fin pitch. Thereafter, this process is repeated until a predetermined number of fins are entered.

  According to the method and apparatus for manufacturing a heat exchanger according to Embodiment 2 of the present invention, a tube is moved intermittently at a pitch corresponding to a predetermined interval in the length direction with respect to a fin to be mounted. Since the fins to be attached are attached to the outer peripheral surface of the tube at the time of stopping while moving intermittently, the fin 2 can be inserted into the tube 1 without causing positional displacement or deformation as compared with the conventional case. Therefore, a high-performance heat exchanger with uniform fin pitch and good adhesion to the fin collar tube 1 can be obtained. Also, heat exchangers with various fin pitches can be manufactured by changing the horizontal movement distance of the stage 140.

Embodiment 3 FIG.
In the heat exchanger manufacturing apparatus according to the first and second embodiments described above, the stage on which the tube is placed is moved. However, in the third embodiment of the present invention, the stage is fixed and the fin holding portion is supported. The drum side to be moved is moved.

  FIG. 11 is an explanatory view showing a part of a heat exchanger manufacturing apparatus according to Embodiment 3 of the present invention. In FIG. 11, a pair of support portions 1741 support a motor 128, a coupling, a drum 122, a fin holding portion 121, a cam member 123, a cam follower 124, and the like, and a pair of linear guides via an air cylinder 1441. 1411. The support portion 1741 moves continuously or intermittently on the linear guide 1411 at a predetermined speed by a motor (not shown). On the other hand, the table 140 on which the tube 1 is placed is fixed and is configured not to move. Other configurations are the same as those in the first or second embodiment.

  The heat exchanger manufacturing apparatus according to the third embodiment configured as described above can operate using the method for manufacturing a heat exchanger according to the first embodiment or the second embodiment described above.

  According to the heat exchanger manufacturing apparatus according to Embodiment 3 of the present invention, fins can be inserted into the tube one by one at a predetermined position, so that there is no fin deformation and pitch disturbance at a desired pitch without using a spacer jig. A heat exchanger can be manufactured.

Embodiment 4 FIG.
FIG. 12 is an explanatory view showing a part of a heat exchanger manufacturing apparatus according to Embodiment 4 of the present invention. In the fourth embodiment, instead of using the cam member 123 and the cam follower 124 described above, the fin holding portion 121 is rotated by a servo motor 171. Other configurations are the same as those in any of the first to third embodiments.

  According to the apparatus for manufacturing a heat exchanger according to Embodiment 4 of the present invention, the timing at which the fin holding part 121 performs a motion to dodge the fins 2 inserted into the tube 1 as described later is arbitrarily controlled by the control of the servo motor 171. It is possible to obtain a high-performance heat exchanger that can be adjusted and has a uniform fin pitch by the operation of the servo motor 171.

Embodiment 5 FIG.
FIG. 13 is an explanatory view showing a part of a heat exchanger manufacturing apparatus according to Embodiment 5 of the present invention. As shown in FIG. 13, the mechanism for connecting or blocking the pipe 1551 and the pipe 1552 does not use the first partition plate and the second partition plate as described above, but electromagnetically covers a part of the pipe 1552. A valve 172 is installed, the sensor 173 senses that the fin holding part 121 has reached the insertion position in the tube, and sends an electric signal to the electromagnetic valve 172, so that the vacuum path composed of the pipe 1551 and the pipe 1552 It is designed to open and close. Other configurations are the same as those in any of Embodiments 1 to 4.

  According to the heat exchanger manufacturing apparatus of Embodiment 5 of the present invention, the timing of the start and end of suction of the fins by the fin holding part 121 can be easily finely adjusted, so that the apparatus can be easily adjusted. There is.

Embodiment 6 FIG.
The heat exchanger manufacturing apparatus according to Embodiment 6 of the present invention does not hold the fins by vacuum suction, but uses an air main plug instead of the vacuum pump, and draws air from the suction holes in the fin holding portion. The fin is ejected and the Bernoulli effect is generated to hold the fin. According to this configuration, the fin can be held without using an expensive vacuum pump.

Embodiment 7 FIG.
As described above, in the conventional method and apparatus for manufacturing a heat exchanger of an air conditioner, as a method of assembling a heat exchanger, a plurality of fins are arranged in advance at appropriate intervals, and the insertion provided in the fins is performed. A flat tube is inserted into the hole. However, in this method, the manufacturing time increases because the fin pitch is secured and arranged, and when the fin is inserted into the tube, the fin is deformed or the fin pitch is disturbed and the cooling air flowing through the fin is Ventilation resistance increases, and the performance of the heat exchanger may be reduced.

  If a spacer jig is used to prevent the fin deformation and pitch disturbance, the number of fins used in one heat exchanger and the increase in the number of parts in order to cope with different fin pitches, a step for manufacturing. There were also problems such as an increase in replacement time and an increase in jig maintenance costs. Furthermore, if the fin is inserted into the tube, the fin may come into close contact with the fin insertion jig, which may cause a deviation from the insertion position into the tube. There have been problems such as degradation of performance and deterioration of the appearance of the heat exchanger.

  Therefore, the heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 7 of the present invention are made to solve the above-described problems, and use a tube having a flat cross section. In the heat exchanger manufacturing process, the fins inserted into the tube are held down to suppress the displacement of the fins, the deformation of the fins and the pitch turbulence are suppressed, the ventilation resistance is reduced, and the performance of the heat exchanger It is made for the purpose of improving heat resistance and suppressing the deterioration of the external appearance of a heat exchanger.

  A heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 7 of the present invention will be described below. The heat exchanger manufactured by the manufacturing method and manufacturing apparatus of the present invention is a fin-and-tube heat exchanger using a tube having a flat cross section, and the configuration thereof is shown in FIG. The fins used in the heat exchanger are the same as those shown in FIG. 2.

  FIG. 14 is an explanatory view showing a part of a heat exchanger manufacturing apparatus according to Embodiment 7 of the present invention, and shows only the main part of the heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 7 of the present invention. ing. In FIG. 14, the same or corresponding parts as those in FIGS. 3 to 5 in the first embodiment are denoted by the same reference numerals.

  In FIG. 14, a plurality of tubes 1 are arranged on the upper surface of the second support member 1742 of the stage portion for holding the tube, and the length direction of the tube 1 is the direction in which the linear guide (see 141 in FIG. 4) extends. Placed to match. Moreover, these tubes 1 are mounted so that the major axis of the cross section thereof coincides with the vertical direction. A through hole 1700 is formed in the second support member 1742 corresponding to the position where the plurality of tubes 1 are placed.

  On the back side of the second support member 1742 of the tube holding stage portion, the fin attachment maintaining portion 200 is disposed. A plurality of fin pressing protrusions 401 that can pass through the through hole 1700 of the second support member 1742 are arranged at a front end portion of the fin attachment maintaining portion 400 with a predetermined interval. These fin pressing protrusions 201 prevent the fins mounted by pressing the fins mounted across the plurality of tubes 1 from being displaced from the mounting position of the tubes 1, as will be described later by the fin mounting maintenance unit 400. To do. Other configurations are the same as those in the first embodiment.

  FIG. 15 is a conceptual diagram showing a heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 7 of the present invention. As shown in FIG. 15, a fin holding part 121 for holding the fin 2 and inserting it into the tube 1 and a drum 122 for moving the fin holding part 121 along a circular path are provided. In the seventh embodiment, the drum 122 is provided with six fin holding portions 121. Other configurations not shown in the drawing are the same as those in FIGS. 3 to 5 except for the second holding member 1742 and the fin attachment maintaining unit 400 in FIG. 14 described above.

  The fin attachment maintaining part 400 is rotatably supported by a shaft 211, and a cam follower 410 is attached to an end opposite to the fin pressing protrusion 401. The cam follower 410 is configured to slide on the peripheral surface of the fin mounting / maintaining portion driving cam 300. As will be described later, the fin attachment maintaining unit driving cam 300 is rotated in synchronization with the rotation of the fin holding unit 121 by a driving device (not shown).

  FIG. 16 is an explanatory view showing the operation of the heat exchanger manufacturing apparatus according to Embodiment 7 of the present invention, in which (a) shows a state immediately before the fins 2 are mounted on the outer peripheral surface of the tube 1, and (b) shows The state when the fin 2 is attached to the outer peripheral surface of the tube 1, (c) is the state immediately after the fin 2 is attached to the outer peripheral surface of the tube 1, and (d) is the time when a further time elapses from the state of (c). Each state is shown. FIG. 16 shows only one of the six fin holders 12 for the convenience of explanation, and shows its operating state.

  In FIG. 16, one fin 2 supplied from a fin supply part (not shown) is supplied to the fin holding part 121, and the tube insertion groove of the fin is U-shaped in the fin holding part as described above. The fin 2 is attracted and held by the fin holding portion 121 in a state of being superimposed on the groove. As the drum rotates, the six fin holders 121 are supplied with the fins 2 one by one sequentially at a predetermined time interval and hold them. As the drum 122 rotates, The position shown in FIG. 16A is reached by the movement.

  When the fin holding part 121 holding the fin 2 reaches the position shown in FIG. 16A, a part of the tube 1 is inserted into the tube insertion groove of the fin 2 held by the fin holding part 12 and the fin holding part 121. It will be in the state fitted in the U-shaped groove. At this time, the cam follower 124 of the fin holding portion 121 is in a position in contact with or not in contact with the flat surface 1231 of the cam member 123, but is upright with respect to the peripheral surface of the drum 122. At this time, the fin attachment maintaining part 400 is in a position away from the tube 1.

  Next, when the fin holding portion 121 reaches the position shown in FIG. 16B as the drum 122 rotates, the cam follower 124 of the fin holding portion 12 reaches the raised surface of the cam member 123 and the fin holding portion 12. The fin 2 held by the tube 2 is in a state in which the width direction thereof substantially coincides with the vertical direction, the tube 1 is completely fitted in the tube insertion groove, and the fin 2 is mounted on the outer peripheral surface of the tube 1. The At the same time, the cam follower 410 of the fin attachment maintaining unit 400 returns to the flat surface from the position where it is pushed up by the raised surface of the fin attachment maintaining unit driving cam 300. As a result, the fin attachment maintaining unit 400 is centered on the shaft 211. 16 is rotated counterclockwise in FIG. 16, and the fin pressing protrusion 401 presses the fin 2 just mounted on the tube 1 from the right side of the drawing, and the fin 2 is brought into the mounting position on the outer peripheral surface of the tube 1. maintain.

  When the drum 122 further rotates in the clockwise direction from the state of FIG. 16B, the fin holder 121 is pushed up with the cam follower 124 contacting the raised surface of the cam member 123, and the fin holder 121 By rotating in the counterclockwise direction around the moving axis, as shown in (c) of FIG. 16, the fin 2 mounted on the outer peripheral surface of the tube 1 is separated. At this time, the fin attachment maintaining unit 400 keeps pressing the fin 2 attached to the tube 1.

  When the drum 122 further rotates and the fin holding portion 121 reaches the position shown in FIG. 9D, the fin holding portion 121 further moves away from the fin 2 attached to the tube 1, and thereafter As the drum 122 rotates, the drum 122 moves toward the top of the drum 122. Then, when the top of the drum 122 is reached again, new fins 2 are again supplied by the fin supply unit and held. At this time, the cam follower 410 of the fin attachment maintaining unit 400 is pushed up by the raised surface of the fin attachment maintaining unit driving cam 300 and rotates clockwise to separate from the mounted fin 2 and the tube 1.

  As described above, according to the heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 7 of the present invention, after the fin 2 is attached to the tube 1 by the fin holding portion 121, the fin holding portion 121 is removed from the tube 1. By avoiding (the state shown in FIG. 16 (c)), the displacement of the fin 2 is suppressed, the deformation of the fin 2 and the disturbance of the fin pitch are suppressed, the ventilation resistance is reduced, and the performance of the heat exchanger is reduced. The heat exchanger which improved and suppressed the appearance deterioration of the external appearance of a fin insertion position can be manufactured. In addition, the fin misalignment correction work is eliminated in the subsequent process, and the production tact time can be shortened.

Embodiment 8 FIG.
Next, a method and apparatus for manufacturing a heat exchanger according to Embodiment 8 of the present invention will be described. FIG. 17 is a front view showing the fin material during press working in the heat exchanger manufactured by the heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 1 of the present invention. A fin material 20 shown in FIG. 17 shows a tip portion of an aluminum thin plate wound around a reel (not shown) in a hoop shape. The fin material 20 moves intermittently to the left side at a predetermined pitch in FIG. 17 and is sequentially supplied to a progressive press apparatus (not shown).

  The progressive press apparatus first punches out pilot holes 201 and 202 in the vicinity of both end portions in the length direction of the fin material 20 supplied in the first step S1, and then in the next step S2, the fin material 20 Cut and raised portions 22 and 23 are formed. Next, in step S3, a pair of tube insertion groove forming through holes 211, 212 are formed, and in step S4, the tube insertion groove forming slits straddling these tube insertion groove forming through holes 211, 212 are formed. 213 is formed.

  Next, in step S5, a pair of tube insertion groove forming through holes 211 and 213 are formed by cutting the fin material 20 from the tube insertion groove forming slit 213 substantially at right angles to the plane of the fin material 20. Are formed into a tube insertion groove forming slot 214. Next, in step S <b> 6, the fin material 20 is formed with a width direction slit 24 connected to the right end portion of the tube insertion groove forming long hole 214 in the drawing.

  The hoop-shaped or sheet-shaped fin material 20 is subjected to the above-described steps S1 to S6 and stored in a state where a plurality of unfinished fins are connected to each other. Then, at the stage of attaching the fins 2 to the outer peripheral surface of the tube 1 as shown in FIG. 1, while separating the fins one by one from the previously stored hoop-like or sheet-like fin material 20 in step S7. Then, the fins 2 separated as described later are sequentially attached to the outer peripheral surface of the tube 1.

  In step S <b> 7 described above, the fins 2 are separated from the fin material 20 one by one by forming the length direction slit 25 extending from the end edge of the fin material 20 to the width direction slit 24.

  According to the conventional heat exchanger manufacturing method, the fins are sequentially cut one by one by forming the longitudinal slit 25 in step S7 in the final process of the progressive press apparatus, and the plurality of cut fins Is stored, and the stored fins are transferred to the tube insertion process, which is the next process. In the heat exchanger manufacturing method according to the first embodiment of the present invention, step S7 is the final cutting process. The fin material wound on the reel in the form of a sheet or hoop that has been cut to a certain length and completed up to step S6, which is one step before the final process, is stored and transferred to the tube insertion process.

  In the above description, the case where one fin is arranged in the width direction of the fin material 20 as shown in FIG. 3 is shown. However, the length of the fin material 20 in the width direction is increased to increase the fin material 20. A plurality of fins may be arranged in the width direction and processed simultaneously.

  Further, steps S1 to S6 shown in FIG. 17 may be performed simultaneously instead of being performed individually, and the final step S7 for separating the fin from the fin material is performed simultaneously with other steps. You may make it implement.

  FIG. 18 is a schematic configuration diagram showing a heat exchanger manufacturing apparatus according to Embodiment 8 of the present invention. In FIG. 18, the fin material feeding mechanism 9 constituting the fin material conveying unit is a fin in which a plurality of fins in an incomplete state are formed by the progressive press device until step S6 is completed as described above. The material 20 is transported intermittently in the direction of arrow A at a predetermined speed or a predetermined pitch. The cutting mechanism 10 that constitutes the fin separating unit separates the fins 2 from the fin material 20 being conveyed one by one. The separation of the fins 2 is performed, for example, by performing step S7 shown in FIG.

The fin material 20 from which the fins 2 have been cut off remains only on both side ends provided with the pilot holes 201 and 202 shown in FIG. 3, but using both side ends provided with the pilot holes 201 and 202, It is conveyed by the fin material feeding mechanism 9.

  The fin mounting portion 100 is installed around the axis X in the direction of arrow B, that is, in the clockwise direction at a predetermined speed in the direction of arrow B, and on the periphery of the drum 11 at a predetermined interval in the circumferential direction of the drum 11. The eight fin insertion plates 12 are provided. These fin insertion plates 12 constitute a fin holding portion, and are supported by rotating shafts (not shown) that are rotatably installed inside the peripheral surface of the drum 11, as will be described later. When the top of the drum 11 is reached, the cutting mechanism 10 holds one fin 2 separated from the fin material 20, and when the bottom of the drum 11 is reached, the held fin 2 is held. Attached to the outer peripheral surface of the tube 1. The fins 2 are held by the fin insertion plate 12 by adsorbing the fins 2 using, for example, air suction. The fin insertion plate 12 is provided with a cam follower 121 that rolls on the peripheral surface of a cam plate 110 described later.

  As shown in FIG. 5 to be described later, each fin insertion plate 12 has a predetermined rotation angle with respect to the drum 11 by rotating the rotation shaft 121 as the drum 11 rotates. Driven.

  The table 13 constituting the tube holding portion moves intermittently at a predetermined pitch in the direction of the arrow C while holding the tube 1 having a flat cross section with the major axis direction of the cross section being vertical. To do. The table 13 is driven and moved by a servo motor (not shown). In the first embodiment, the pitch at which the table 13 moves intermittently is set equal to the interval at which the plurality of fins 2 are installed. In the first embodiment, the table 13 holds eight tubes 1 held as described above at a predetermined interval. Further, instead of moving the table 13, the fin mounting part 100 may be moved.

  FIG. 19 is an explanatory view for explaining the operation of the heat exchanger manufacturing apparatus according to Embodiment 8 of the present invention. (A) is a state immediately before the fin 2 is mounted on the outer peripheral surface of the tube 1, and (b). Is the state when the fin 2 is mounted on the outer peripheral surface of the tube 1, (c) is the state immediately after mounting the fin 2 on the outer peripheral surface of the tube 1, and (d) is a further time elapsed from the state of (c). Each state is shown. For convenience of explanation, FIG. 19 shows only one of the eight fin insertion plates 12 and shows its operating state.

  As shown in FIG. 19, the fin insertion plate 12 holding one fin 2 at the topmost position of the drum 11 moves with the rotation of the drum 11 while holding the fin 2, and moves to FIG. When the position shown is reached, a part of the tube 1 is inserted into the tube insertion groove 21 of the fin 2 held by the fin insertion plate 12. At this time, the cam follower 121 of the fin insertion plate 12 is in a position in contact with the flat surface 110 a of the cam plate 110.

  Next, when the drum 11 rotates and the fin insertion plate 12 reaches the position shown in FIG. 19B, the rotation shaft 121 of the fin insertion plate 12 reaches the raised surface 110b of the cam plate 110, and the fin insertion. The fin 2 held by the plate 12 is in a vertical state, and the tube 1 is completely inserted into the fin insertion groove 21. At this time, the attachment of the fin 2 to the outer peripheral surface of the tube 1 is completed, and the fin insertion plate 12 ends the holding of the fin 2.

  When the drum 11 further rotates in the clockwise direction from the state of FIG. 19B, the fin follower plate 12 is pushed up with the cam follower 121 coming into contact with the raised surface 110b of the cam plate 110, and the fin insert plate 12 is turned around the rotation axis. By rotating clockwise, it separates from the fin 2 attached to the outer peripheral surface of the tube 1 as shown in FIG. 19D, the fin insertion plate 12 further moves away from the mounted fin 2 and then moves toward the top of the drum 11 as the drum 11 rotates. . Then, when the top of the drum 11 is reached again, the fin 2 cut by the cutting mechanism 10 as described above with reference to FIG. 18 is newly held, and thereafter the operations of (a) to (d) of FIG. 19 are repeated.

  As shown in FIG. 18, the drum 11 is provided with eight fin insertion plates 12 in the first embodiment, and each fin insertion plate 12 sequentially performs the operation described with reference to FIG. Accordingly, the table 13 is moved intermittently by the fin installation interval in accordance with the timing when the respective fin insertion plates 12 reach the lowermost portion of the drum 11 in the direction of arrow C through the tube 1. As a result, the fins 2 are sequentially and continuously mounted at a predetermined interval on the outer peripheral surface of the tube 1 to manufacture the heat exchanger shown in FIG.

  The rotation angle of the fin insertion plate 12 can be set to any desired angle based on the shape of the cam plate 110 described above.

  As described above, according to the method and apparatus for manufacturing a heat exchanger according to Embodiment 8 of the present invention, by sequentially inserting the fins into the tube while separating the fins one by one from the sheet or hoop-shaped fin material, Since fins can be inserted into the tube one by one at a predetermined position, a heat exchanger free from fin deformation and pitch disturbance can be manufactured at a desired pitch without using a spacer jig. Further, since the fins can be stored in a sheet or hoop state, deformation and scattering of the fins due to handling mistakes can be prevented, and a heat exchanger with higher performance and stable quality can be manufactured with high yield.

Embodiment 9 FIG.
FIG. 20 is a block diagram showing a heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 9 of the present invention. In FIG. 20, the fin material 200 wound on the reel is made of an aluminum thin plate, and is fed continuously or intermittently to the progressive press apparatus 500 at a predetermined speed. In the same manner as described in the first embodiment, the progressive press device 500 sequentially forms fins on the supplied fin material 200 through a plurality of steps. In addition, you may abbreviate | omit a drying apparatus depending on the case.

  The fins formed on the fin material 200 are appropriately dried by the drying device 600 while being connected to the fin material 200, and are fed to the fin insertion device 700. The fin insertion device 700 is configured in the same manner as the configuration shown in FIG. 4 in the first embodiment. The fins are separated from the fin material 200 one by one, and the separated fins are sequentially placed on the outer peripheral surface of the tube. The heat exchanger shown in FIG. 1 is manufactured by mounting.

  Thus, the heat exchanger manufacturing method and manufacturing apparatus according to the ninth embodiment does not store fins processed by the progressive press in a sheet-like or hoop-like state as in the eighth embodiment. The fins are not formed, and the fins are sequentially formed by a progressive press device, the fin materials are dried by a drying device, and the tube is cut while the fins are separated from the fin material after the drying by the fin insertion device. It is intended to be mounted on the outer peripheral surface of the.

  According to the heat exchanger manufacturing method and manufacturing apparatus according to the ninth embodiment of the present invention described above, since there is no work between processes, a storage space that complements at least the fin material forming a part of the fin is not required. In addition, the production lead time can be shortened. Further, deformation and scattering of the fin due to handling mistakes can be further suppressed.

DESCRIPTION OF SYMBOLS 100 Heat exchanger 1 Tube 2 Fin 21 Tube insertion groove 22, 23 Slit 121 Fin holding part 122 Drum 123 Cam member 124 Cam follower 174, 1741 Support part 126 Shaft 127 Coupling 128, 143 Motor 1241 Connecting plate 129 Time of fin holding part Driving shaft 125 Torsion spring 156 Rotary joint 1551, 1552 Piping 164 First partition plate 162 Second partition plate 1621, 1643 Through long hole 151 U-shaped groove 1552, 1553, 1555 Joint 154 Adsorption hole 152 Internal passage 157 Vacuum pump 140 Stage portion 141 Linear guide 1741 First support member 1742 Second support member 144 Air cylinder 142 Ball screw 128, 143 Motor 1232 Raised surface 171 Servo motor 172 Electromagnetic 173 Sensor 400 Fin mounting maintaining portion 401 Fin pressing protrusion 1700 Through hole 410 Cam follower 300 Fin mounting maintaining portion driving cam 20, 200 Fin material 201, 202 Pilot hole 22, 23 Cut-up portion 220 Fins defined by tube insertion grooves Surfaces 211 and 212 Tube insertion groove forming through hole 213 Tube insertion groove forming slit 214 Tube insertion groove forming long hole 24 Width direction slit 25 Length direction slit 500 Progressive press device 600 Drying device 700 Fin insertion device

Claims (22)

A heat exchanger manufacturing method in which a plurality of fins are attached to the outer peripheral surface of a tube through which a fluid is circulated in the length direction of the tube via a predetermined interval,
Relative to the fin to be attached, the tube is continuously moved at a predetermined speed in the length direction of the tube,
The plurality of fins to be attached are sequentially attached to the outer peripheral surface of the moving tube through a predetermined time interval.
The manufacturing method of the heat exchanger characterized by the above-mentioned. A heat exchanger manufacturing method in which a plurality of fins are attached to the outer peripheral surface of a tube through which a fluid is circulated in the length direction of the tube via a predetermined interval,
Relative to the fin to be attached, the tube is continuously moved at a predetermined speed in the length direction of the tube,
By moving the fin holding part holding the fin to be attached, the fins held by the fin holding part are sequentially attached to the outer peripheral surface of the moving tube through a predetermined time interval,
The mounted fins are maintained at positions on the outer peripheral surface of the mounted tubes by the fin mounting maintenance unit each time the sequential mounting is performed.
The manufacturing method of the heat exchanger characterized by the above-mentioned. A heat exchanger manufacturing method in which a plurality of fins are attached to the outer peripheral surface of a tube through which a fluid is circulated in the length direction of the tube via a predetermined interval,
Relative to the fin to be mounted, the tube is moved intermittently at a pitch corresponding to the predetermined interval in the length direction of the tube,
For each stop during the intermittent movement of the tube, sequentially attach the plurality of fins to be attached to the outer peripheral surface of the tube,
The manufacturing method of the heat exchanger characterized by the above-mentioned. A heat exchanger manufacturing method in which a plurality of fins are attached to the outer peripheral surface of a tube through which a fluid is circulated in the length direction of the tube via a predetermined interval,
Relative to the fin to be mounted, the tube is moved intermittently at a pitch corresponding to the predetermined interval in the length direction of the tube,
By moving the fin holding part holding the fin to be attached, the fins held by the fin holding part are sequentially attached to the outer peripheral surface of the moving tube through a predetermined time interval,
The mounted fins are maintained at positions on the outer peripheral surface of the mounted tubes by the fin mounting maintenance unit each time the sequential mounting is performed.
The manufacturing method of the heat exchanger characterized by the above-mentioned. A plurality of the tubes are juxtaposed at a predetermined interval in the width direction,
The fins are attached to the outer peripheral surface of each of the juxtaposed tubes across the plurality of tubes one by one.
The manufacturing method of the heat exchanger as described in any one of Claims 1 thru | or 4 characterized by the above-mentioned. The fin is sequentially attached to the outer peripheral surface of the tube while separating the fin from a fin material in which at least a part of the fin is formed at least in part.
The manufacturing method of the heat exchanger as described in any one of Claims 1 thru | or 5 characterized by the above-mentioned. A first step of forming at least a portion of the fin in a fin material for forming the fin;
A second step of separating the fin from the fin material;
A third step of attaching the separated fin to the outer peripheral surface of the tube;
With
At least the second step and the third step are connected to each other.
The manufacturing method of the heat exchanger of Claim 6 characterized by the above-mentioned.   The method for manufacturing a heat exchanger according to claim 7, wherein the first step is connected to the second step.   The method for manufacturing a heat exchanger according to claim 7 or 8, wherein the first step and the second step are performed by a progressive press apparatus.   The method for manufacturing a heat exchanger according to any one of claims 1 to 9, wherein the fin material is formed into a sheet shape or a hoop shape. The fin includes a groove portion extending inward from a side end portion thereof,
The heat exchanger according to any one of claims 1 to 10, wherein the fin is attached to the outer peripheral surface of the tube by fitting the groove portion to the outer peripheral surface of the tube. Production method. A heat exchanger manufacturing apparatus comprising: a tube for circulating a fluid therein; and a fin that is fitted to the tube by fitting a tube insertion groove to the outer peripheral surface of the tube,
A fin holding portion capable of holding a fin to be attached to the tube;
A tube holding portion capable of holding the tube to which the fin is to be attached;
A drive unit that relatively moves the fin holding unit and the tube holding unit in the length direction of the held tube;
With
The fin holding portion holds the fin and fits the tube insertion groove to the tube to attach the fin to the outer peripheral surface of the tube, and sequentially performs the attachment corresponding to the movement. By mounting a plurality of fins on the outer peripheral surface of the tube at predetermined intervals,
An apparatus for manufacturing a heat exchanger. A fin mounting maintenance unit that maintains the mounted fins at a position on the outer peripheral surface of the mounted tube each time the sequential mounting is performed.
The heat exchanger manufacturing apparatus according to claim 12. A heat exchanger manufacturing apparatus comprising: a tube for circulating a fluid therein; and a fin that is fitted to the tube by fitting a tube insertion groove to the outer peripheral surface of the tube,
A fin holding portion capable of holding a fin to be attached to the tube;
A tube holding portion capable of holding the tube to which the fin is to be attached;
A drive unit that relatively moves the fin holding unit and the tube holding unit in the length direction of the held tube;
A fin mounting maintaining unit for maintaining the fin mounted on the outer peripheral surface of the tube at a position on the outer peripheral surface of the mounted tube;
The fin holding portion holds the fin and fits the tube insertion groove to the tube to attach the fin to the outer peripheral surface of the tube, and sequentially performs the attachment corresponding to the movement. Is configured to attach a plurality of fins to the outer peripheral surface of the tube at predetermined intervals,
Each time the fins are sequentially mounted on the outer peripheral surface of the tube in synchronism with the mounting of the fins by the fin holding unit, the fin mounting maintaining unit replaces the mounted fins with the mounted tubes. Configured to maintain a position on the outer peripheral surface of the
An apparatus for manufacturing a heat exchanger. The fin holding portion includes a groove portion having a width dimension larger than the width dimension of the tube, holds the fin in a state where the tube insertion groove of the fin is superimposed on the groove portion, and the groove portion and the tube After fitting the insertion groove with the tube and mounting the fin on the outer peripheral surface of the tube, the holding of the fin is released to separate from the mounted fin.
The apparatus for manufacturing a heat exchanger according to any one of claims 12 to 14, wherein the apparatus is a heat exchanger. A plurality of the fin holding portions are provided,
The apparatus for manufacturing a heat exchanger according to any one of claims 12 to 15, wherein: A drum configured to be rotatable around an axis, and rotatably supporting the fin holding portion;
A cam member;
A cam follower coupled to the fin holding portion and rotating the fin holding portion in contact with a predetermined portion of the cam member at a predetermined rotational position of the drum;
With
17. The fin holding part is separated from the fin mounted on the tube by rotating the fin holding part by the cam follower. The heat exchanger manufacturing apparatus described in 1. A drum configured to be rotatable around an axis, and rotatably supporting the fin holding portion;
A servo motor connected to the fin holding portion and rotating the fin holding portion at a predetermined rotational position of the drum;
With
17. The fin holding portion is separated from the fin mounted on the tube by rotating the fin holding portion by the servo motor. The heat exchanger manufacturing apparatus according to the item. The fin holding portion is configured to hold the fin by vacuum suction,
The apparatus for manufacturing a heat exchanger according to any one of claims 12 to 18, further comprising a partition plate provided in the middle of the path for performing vacuum suction and capable of opening and closing the path. . The fin holding portion is configured to hold the fin by vacuum suction,
Provided with an electromagnetic valve that can control the opening and closing of the path for performing vacuum suction,
The apparatus for manufacturing a heat exchanger according to any one of claims 12 to 18, wherein the apparatus is a heat exchanger.   The said fin holding part hold | maintains the said fin by the Bernoulli effect, The manufacturing apparatus of the heat exchanger as described in any one of Claim 12 thru | or 17 characterized by the above-mentioned. A fin material transport unit for continuously transporting a fin material having at least a part of the fin formed at least in part;
A fin separating part for separating the fin from the fin material;
With
The fin holding part is configured to hold the fin cut by the fin cutting part,
The manufacturing apparatus of the heat exchanger as described in any one of Claims 12 thru | or 19 characterized by the above-mentioned.

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