JP2019089084A - Pipe insertion device and pipe insertion method - Google Patents

Abstract

To provide a pipe insertion device and a pipe insertion method which enhance bondability of a radiation fin and a heat transfer pipe, and can suppress deformation of the radiation fin when the heat transfer pipe is inserted.SOLUTION: A pipe insertion device 1 includes an insertion part 70 which inserts a heat transfer pipe 5 into a notch part of heat radiation fins 6, and a fin table 40 which enables mounting of the plurality of heat radiation fins 6. The fin table 40 has a fin guide block 42 which brings a collar erected on the edge part of the notch part of the heat radiation fin 6 into contact with the adjacent heat radiation fin 6, and restricts contours of the heat radiation fins 6 laminated in a state in which the heat radiation fins 6 are brought into close contact with each other.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a tube insertion apparatus and a tube insertion method.

  As a heat exchanger used for an air conditioner, a refrigerator, etc., the finned-tube type heat exchanger which circulates a heat carrier and distributes a heat carrier to a heat transfer pipe attached with a flat radiation fin is known. In the finned-tube type heat exchanger, a plurality of heat dissipating fins are joined to a plurality of heat transfer tubes to enhance the heat dissipation efficiency. In such a fin-tube type heat exchanger, as a method of attaching a heat dissipating fin to a heat transfer pipe, a heat dissipating fin having a notch for inserting the heat transfer pipe is stacked, and the notch of the stacked heat dissipating fin is A method of inserting a heat transfer tube has been developed (e.g., Patent Document 1).

Unexamined-Japanese-Patent No. 2-169177

  In the method of manufacturing a heat exchanger described in Patent Document 1, the gap between the heat sink fins and the notches of the heat sink fins is made smaller to improve the bondability between the heat sink fins and the heat sink pipes. When inserting the heat pipe, a strong frictional resistance is generated, and the heat dissipating fins may be bent or deformed.

  This invention is made in view of the above-mentioned situation, and an object of the present invention is to provide a tube insertion device and a tube insertion method which can control modification of a radiating fin at the time of heat transfer tube insertion.

  In order to achieve the above object, a tube insertion device according to the present invention includes an insertion portion for inserting a heat transfer tube in a notch portion of a heat dissipating fin, and a fin table on which a plurality of heat dissipating fins can be mounted. In addition, the fin table brings a collar standing at the edge of the notch of the radiation fin into contact with the adjacent radiation fin, and regulates the outer shape of the radiation fin stacked in a state where the radiation fins are in close contact with each other. It has a guide part.

  According to the present invention, since the collar provided upright at the notch of the heat dissipating fin is in contact with the adjacent heat dissipating fin and has a guide portion for laminating the heat dissipating fins in close contact with each other, the heat dissipating fin It is possible to increase the rigidity of the above and suppress the deformation of the radiation fin.

The perspective view of the heat exchanger tube which concerns on Embodiment 1 of this invention (A) is a plan view of the radiation fin according to Embodiment 1, (B) is a cross-sectional view of the radiation fin cut along the line A-A 'of (A). Front view of the pipe insertion device according to the first embodiment Side view of the pipe insertion device according to the first embodiment A plan view of the tube positioning block and the heat transfer tube according to the first embodiment (A) is a perspective view of a fin guide block according to the first embodiment, (B) is a front view of the fin guide block according to the first embodiment A side view of a holding guide and an insertion head holding a heat transfer tube according to the first embodiment Flow chart showing a flow of heat transfer tube insertion according to the first embodiment The side view of the radiation fin before heat exchanger tube insertion concerning Embodiment 1, a heat exchanger tube, a grasping guide, and an insertion head Side view of heat dissipating fin, heat transfer tube, gripping guide and insertion head when heat transfer tube is inserted according to the first embodiment The front view of the pipe insertion apparatus which concerns on Embodiment 2 of this invention Flow chart showing a flow of heat transfer tube insertion according to the second embodiment Front view of the insertion portion at the time of heat transfer tube insertion according to Embodiment 2 The front view of the insertion part at the time of the completion of the heat exchanger tube insertion which concerns on Embodiment 2. Front view of a pipe insertion device according to Embodiment 3 of the present invention Flowchart showing a flow of heat transfer tube insertion according to the third embodiment Front view of the insertion portion at the time of heat transfer tube insertion according to Embodiment 3 Front view of the insertion portion at the time of completion of heat transfer tube insertion according to Embodiment 3 Front view of a pipe insertion device according to Embodiment 4 of the present invention Flowchart showing a flow of heat transfer tube insertion according to the fourth embodiment Front view of the insertion portion before heat transfer tube insertion according to Embodiment 4 Front view of the insertion portion at the time of heat transfer tube insertion according to Embodiment 4 The front view of the insertion part at the time of the completion of the heat exchanger tube insertion which concerns on Embodiment 4

  Hereinafter, a tube insertion apparatus and a tube insertion method according to an embodiment of the present invention will be described with reference to the drawings.

Embodiment 1
The tube insertion device 1 according to the present embodiment is an assembly device for inserting a heat transfer tube into a radiation fin used in a finned tube type heat exchanger. The heat transfer tube 5 used in the present embodiment is, as shown in FIG. 1, a piping member having a flat cross section and having arc-shaped short sides and flat long sides, and heat is generated in the flow holes 5a formed inside. Distribute the medium.

  Moreover, the radiation fin 6 used by this Embodiment is provided with the notch part 6a by which the heat exchanger tube 5 is inserted, as shown to FIG. 2 (A). As shown in FIG. 2 (B), the heat radiation fin 6 is formed with a collar 6b erected from the edge of the notch 6a. The collar 6 b is intermittently formed at the edge of the notch 6 a.

  As shown in FIGS. 3 and 4, the tube insertion device 1 includes a base frame 11 as a base of the device, a tube table 20 on which the heat transfer tube 5 is set, a tube transfer unit 30 for transferring the tube table 20, and heat dissipating fins 6, the fin table 40 to be set, the fin transport unit 50 for transporting the fin table 40, the gripping guide 60 for gripping the heat transfer tube 5, and the insertion unit 70 for inserting the heat transfer tube 5 into the radiation fin 6 set on the fin table 40 , The control unit 18 which controls the operation of the entire tube insertion device 1.

  The base frame 11 is a base of the pipe insertion device 1 for installing the pipe table 20, the fin table 40, the insertion portion 70 and the like.

  The tube table 20 is a table which is installed on the base frame 11 and in which a plurality of heat transfer tubes 5 inserted into the heat dissipating fins 6 are set. Further, the tube table 20 moves the set heat transfer tube 5 from the tube setting position to the assembling position.

  The assembling position is a position at which the heat transfer pipe 5 is inserted into the heat dissipating fin 6, and as shown in FIG. The tube setting position is a position where the operator sets the heat transfer tube 5 on the tube table 20. The tube table 20 moves in the direction connecting the tube set position and the assembly position, that is, in the left-right direction in FIG. Further, in the following description, the vertical direction in the drawing of FIG. 3 which is the gravity direction is referred to as the device vertical direction.

  As shown in FIG. 3, the tube table 20 adjusts the distance between the base 21 which is the base of the tube table 20, the tube positioning block 22 for positioning the heat transfer tube 5 set on the tube table 20, and the heat transfer tubes 5. The knock pin 23 is provided.

  The tube positioning block 22 is a rectangular plate-like member positioned in contact with one longitudinal end of the heat transfer tube 5 and fixed to the upper surface of the flat base 21. The heat transfer tube 5 is formed in a U-shape as shown in FIG. The operator brings the U-shaped end of the heat transfer tube 5 into contact with the tube positioning block 22 and sets it on the base 21. The tube table 20 also includes a knock pin 23 disposed on the upper surface of the base 21. The diameter of the knock pin 23 is set to be the same as the distance between the slits 60 a of the grip guide 60. Thereby, the plurality of U-shaped heat transfer tubes 5 are set at the same intervals as the slits 60a.

  As shown in FIG. 3, the pipe conveyance unit 30 includes a linear guide 31 for conveying the pipe table 20, a servomotor 32, and a ball screw 33.

  The linear guide 31 is fixed to the base frame 11. Further, the slide portion 31 a of the linear guide 31 is fixed to the lower portion of the base 21 and guides the movement of the tube positioning block 22. More specifically, the linear guide 31 moves the tube table 20 between the tube set position where the heat transfer tube 5 is mounted by the operator and the assembly position where the heat transfer tube 5 is inserted into the heat dissipating fins 6. invite.

  The servomotor 32 rotationally drives the ball screw 33. The ball screw 33 moves the slide portion 31 a by the rotation of the ball screw 33. Thereby, the pipe table 20 fixed to the slide part 31a is conveyed.

  The fin table 40 is installed on the base frame 11, and while the plurality of radiation fins 6 are set, the set radiation fins 6 are moved from the fin set position to the assembly position.

  The assembling position is a position at which the heat transfer tube 5 is inserted into the heat dissipating fin 6 and is the same position as the assembling position of the tube table 20 described above. The fin set position is a position where the operator sets the radiation fin 6 on the fin table 40, and is a position opposite to the tube set position across the assembly position. Therefore, the fin table 40 moves along the same axis in the moving direction of the tube table 20.

  The fin table 40 is provided with the base 41 which is a base of the fin table 40, and the fin guide block 42 which is a guide part which guides the radiation fin 6 to be set, as shown in FIG.

  The fin guide block 42 is a rectangular frame shaped member fixed to the upper surface of the flat base 41. As shown in FIG. 6A, the heat dissipating fins 6 are set inside the frame-like fin guide block 42. The heat dissipating fins 6 are placed in the fin guide block 42 in a direction such that the opening of the notch 6 a into which the heat transfer tube 5 is inserted is directed upward.

  The radiation fin 6 which concerns on this Embodiment is equipped with the color | collar 6b standingly arranged by the edge of the notch part 6a, as shown in FIG. As shown in FIG. 6B, the heat dissipating fins 6 are stacked in a state in which the end portions of the collars 6b abut against the adjacent heat dissipating fins 6, and are set in the fin guide block 42.

  One side inside the fin guide block 42 which is a rectangular frame shape is set to a length equivalent to the longitudinal direction length of the radiation fin 6. Further, the other side inside the fin guide block 42 is set equal to the length in the stacking direction in which the radiation fins 6 of a preset number are stacked. Therefore, the heat dissipating fins 6 are guided by the fin guide block 42 in close contact with each other without rattling each other, and are set on the fin table 40.

  The fin conveyance part 50 is provided with the linear guide 51 which conveys the fin table 40, the servomotor 52, and the ball screw 53, as shown in FIG.

  The linear guide 51 is fixed to the base frame 11. The slide portion 51 a of the linear guide 51 is fixed to the lower portion of the base 41 to guide the movement of the fin table 40. More specifically, the linear guide 51 moves the fin table 40 between the fin set position where the heat dissipating fin 6 is mounted by the operator and the assembly position where the heat transfer tube 5 is inserted into the heat dissipating fin 6. invite.

  The servomotor 52 rotationally drives the ball screw 53. The ball screw 53 moves the slide portion 51 a by the rotation of the ball screw 53. Thereby, the fin table 40 fixed to the slide part 51a is conveyed.

  The gripping guide 60 grips the heat transfer tube 5 transported to the assembly position, and positions the heat transfer tube 5 with respect to the notch 6 a of the heat radiation fin 6. As shown in FIG. 7, the gripping guide 60 includes a slit 60a into which the plurality of heat transfer tubes 5 respectively enter, and a ball plunger 60b for gripping and positioning the heat transfer tube 5 inserted in the slit 60a.

  As shown in FIG. 3, the grip guide 60 is disposed at the upper center of the pipe insertion device 1. As shown in the side view of the tube insertion device 1 of FIG. 4, the slits 60 a of the grip guide 60 are formed spaced apart in the depth direction of the tube insertion device 1 orthogonal to the moving direction of the tube table 20 and the fin table 40. It is done. The distance between the slits 60 a is set in accordance with the distance between the heat transfer tubes 5 placed on the tube table 20.

  The gripping guide 60 temporarily holds the heat transfer tube 5 before it is inserted into the radiation fin 6. Specifically, after the tube table 20 on which the heat transfer tube 5 is mounted is moved to the assembly position of the central portion of the tube insertion device 1, the grip guide 60 disposed at the upper part of the assembly position is moved to the tube table 20 Go down. Thus, the heat transfer tubes 5 mounted on the tube table 20 are inserted into the slits 60 a formed at the same intervals as the heat transfer tubes 5.

  Further, as shown in FIG. 7, the ball plunger 60 b presses the heat transfer tube 5 from one inner side surface of each slit 60 a to the other inner side surface by the spring force in the ball plunger 60 b. The gripping guide 60 is disposed at a position where the notch 6 a of the heat dissipating fin 6 placed on the fin table 40 and the heat transfer tube 5 pressed in the slit 60 a face each other. Therefore, the heat transfer tube 5 inserted into the slit 60 a is positioned with respect to the notch 6 a of the heat dissipating fin 6 on the fin guide block 42.

  The grip guide 60 is fixed to a guide frame 13 disposed at the upper center of the pipe insertion device 1 as shown in FIGS. 3 and 4. The guide frame 13 is slidably attached to the slide shafts 14 at the four corners and attached to the slide shafts 15 at two central portions.

  A power jack 17 is connected to the lower portion of the slide shaft 15. Each power jack 17 is connected to a servomotor 16 and driven by the servomotor 16. Thereby, the gripping guide 60 is moved in the apparatus vertical direction by the operation of the servomotor 16.

  The insertion unit 70 inserts the heat transfer tube 5 gripped by the grip guide 60 into the heat dissipating fins 6 transported to the assembly position. The insertion part 70 is provided with the insertion head 71 which presses the heat exchanger tube 5, the servomotor 73 which drives the insertion head 71, the power jack 74, and the slide shaft 72, as shown in FIG.

  The insertion head 71 is provided with the extrusion part 71a arrange | positioned by the same space | interval as the heat exchanger tube 5 hold | gripped by the holding | grip guide 60, as shown in FIG. The push-out portion 71 a has a flat plate shape and pushes out the heat transfer tube 5 held by the holding guide 60. Further, the tip end surface of the push-out portion 71 a in contact with the heat transfer tube 5 is an arc-shaped recessed portion, and is in surface contact with the arc-shaped end of the heat transfer tube 5. As a result, when the heat transfer tube 5 is extruded, the load received by the heat transfer tube 5 can be dispersed, and defects such as dents and scratches produced in the heat transfer tube 5 can be suppressed.

  As shown in FIG. 3, the insertion head 71 is connected to the lower end portion of the slide shaft 72 disposed at the upper center of the pipe insertion device 1. The slide shaft 72 is connected to a power jack 74 fixed to the head frame 12. The power jack 74 is connected to the servomotor 73 and driven by the servomotor 73. The insertion head 71 is moved in the vertical direction of the device by the operation of the servomotor 73.

  The control unit 18 includes a CPU, a memory, an external storage device, an input / output I / O, and the like, and controls the overall operation of the tube insertion device 1. Specifically, when the CPU executes a program stored in advance in the external storage device, the control unit 18 sends a control signal to a motor driver for operating the servomotors 16, 73 and the like to control.

  Subsequently, a method of inserting the heat transfer tube 5 into the radiation fin 6 using the tube insertion device 1 will be described based on a flowchart shown in FIG.

  In the tube insertion device 1 before the start of operation, the tube table 20 is at the tube set position, and the fin table 40 is at the fin set position. In addition, the insertion portion 70 and the grip guide 60 are at an initial position at the upper center of the pipe insertion device 1.

  When the tube insertion device 1 starts operation, the control unit 18 drives the servomotor 32. By driving the servomotor 32, the ball screw 33 is rotated, and the slide portion 31a fixed to the tube table 20 is moved. Thereby, the tube table 20 on which the heat transfer tube 5 is placed is transported from the tube setting position to the assembling position (step S101).

  After the tube table 20 has moved to the assembly position, the controller 18 drives the servomotor 16. The gripping guide 60 starts to be lowered from the initial position by the servomotor 16. When the gripping guide 60 is lowered to the position of the heat transfer tube 5 on the tube table 20, the heat transfer tube 5 is inserted into the slit 60 a of the gripping guide 60. Further, the heat transfer tube 5 inserted into the slit 60 a is pressed by the ball plunger 60 b and gripped by the grip guide 60 (step S 102). After the gripping of the heat transfer tube 5 is completed, the gripping guide 60 ascends to the initial position (step S103). Further, the control unit 18 drives the servomotor 32 to return the pipe table 20 to the pipe setting position (step S104).

  Subsequently, the control unit 18 drives the servomotor 52 to move the fin table 40 from the fin set position to the assembly position (step S105). After the fin table 40 has moved to the assembly position, the controller 18 drives the servomotor 16 and the servomotor 73 to lower the gripping guide 60 and the insertion head 71 (step S106). The gripping guide 60 and the insertion head 71 are stopped at a preparation position where a gap is maintained between the lower end of the heat transfer tube 5 gripped by the gripping guide 60 and the upper end of the radiation fin 6, as shown in FIG. Ru.

  After the gripping guide 60 and the insertion head 71 stop at the preparation position, the servomotor 73 is further driven. As a result, as shown in FIG. 10, the push-out portion 71a of the insertion head 71 pushes the heat transfer tube 5 out of the holding guide 60 and inserts it into the notch 6a of the radiation fin 6 at the assembly position (step S107). The control unit 18 stops the lowering of the insertion head 71 at the position where the heat transfer tube 5 is inserted to the end of the notch 6a.

  As described above, the heat transfer tube 5 is positioned at a position facing the notch 6a of the heat radiation fin 6 and is inserted while maintaining the relationship, so that unnecessary frictional resistance at the time of insertion can be reduced. it can.

  The width of the notched portion 6 a of the heat radiation fin 6 is set in accordance with the width of the heat transfer tube 5 in order to improve the bonding property with the heat transfer tube 5. Therefore, when the heat transfer tube 5 is inserted into the notch 6 a of the heat radiation fin 6, frictional resistance is generated between the heat transfer tube 5 and the heat radiation fin 6. In the present embodiment, adjacent radiation fins 6 are placed on the fin guide block 42 in a state where they are in contact with each other by the collar 6 b. Thereby, the rigidity of the radiation fin 6 can be enhanced, and the deformation of the radiation fin 6 when the heat transfer tube 5 is inserted can be suppressed.

  After completing the insertion of the heat transfer tube 5 into the radiation fin 6, the control unit 18 raises the insertion head 71 and the gripping guide 60 to the initial position (step S108) and moves the fin table 40 to the fin setting position (step S109). . Thereafter, the operator takes out the heat dissipating fins 6 into which the heat transfer tubes 5 are inserted from the apparatus.

  As described above, in the tube insertion device 1 according to the present embodiment, the plurality of heat radiation fins 6 are brought into contact with each other, and the heat radiation fins 6 to be placed are stacked in close contact with one another. Insert into the notch 6a. Therefore, the rigidity of the radiation fin 6 at the time of inserting the heat transfer tube 5 can be raised. Thereby, it can suppress that the radiation fin 6 deform | transforms by the stress which arises by the frictional resistance at the time of heat transfer tube 5 insertion.

  In the present embodiment, the tube positioning block 22 is positioned by bringing one longitudinal end of the heat transfer tube 5 into contact, but the present invention is not limited to this. For example, the tube positioning blocks 22 may be disposed on both sides of the heat transfer tube 5 in the longitudinal direction. Thereby, the heat transfer tube 5 can be more reliably positioned.

  Further, in the present embodiment, although the insertion portion 70 is driven by the servomotor 73, the present invention is not limited to this. For example, the insertion unit 70 may be operated manually. Thereby, the structure of the insertion portion 70 can be simplified.

  In addition, although the radiation fin 6 according to the present embodiment intermittently has the collar 6b at the edge of the notch 6a, the present invention is not limited thereto, and the entire edge may be provided with the collar 6b. Good. As a result, the rigidity of the closely attached heat dissipating fins 6 can be enhanced, and the deformation of the heat dissipating fins 6 when the heat transfer tube 5 is inserted can be suppressed.

Second Embodiment
Subsequently, a pipe insertion device 2 according to a second embodiment of the present invention will be described. In the first embodiment, the heat transfer pipe 5 is vertically inserted into the heat dissipation fin 6, but the angle between the heat transfer pipe 5 and the heat dissipation fin 6 at the time of insertion is arbitrary and is not particularly limited. However, in order to reduce the frictional resistance at the time of inserting the heat transfer tube 5, it is desirable to insert the heat transfer tube 5 so as to be inclined with respect to the stacking direction of the radiation fins 6. An example of a method of inclining the heat transfer tube 5 with respect to the stacking direction of the radiation fins 6 will be described.

  The tube insertion device 2 according to the present embodiment differs from the first embodiment in that the insertion portion 70 includes a plurality of insertion heads 71 1 to 7 14 and a drive portion for each insertion head, as shown in FIG. The other configuration is the same as that of the first embodiment, so the same reference numerals are given.

  The insertion portion 70 according to the present embodiment includes insertion heads 711-714 for pressing the heat transfer tube 5, servomotors 731-734 for driving the insertion heads 711-714, power jacks 741-744, and slide shafts 721-724. .

  The insertion heads 71 1 to 714 have a configuration in which the insertion head 71 according to the first embodiment is divided into four. Moreover, each insertion head 711-714 is comprised so that independent operation | movement is possible.

  As shown in FIG. 11, the insertion head 711 is connected to the lower end portion of the slide shaft 721 disposed at the upper center of the pipe insertion device 2. The insertion head 711 presses one end of the heat transfer tube 5 in the longitudinal direction. The slide shaft 721 is connected to a power jack 741 fixed to the head frame 12. Also, the power jack 741 is connected to the servomotor 731. The insertion head 711 is moved in the vertical direction of the tube insertion device 2 by the operation of the servomotor 731.

  The insertion heads 712 to 714 are disposed side by side with the insertion head 711 and press the entire heat transfer tube 5 with the insertion heads 71 1 to 7 4 like the insertion head 71 according to the first embodiment.

  Further, the insertion heads 712 to 714 respectively include slide shafts 722 to 724, power jacks 742 to 744, and servomotors 732 to 734, similarly to the insertion head 711. Thereby, the insertion heads 711-714 which concern on this Embodiment can be operated to the up-down direction of the tube insertion apparatus 2 independently.

  Subsequently, a method of inserting the heat transfer tube 5 into the radiation fin 6 using the tube insertion device 2 according to the present embodiment will be described with reference to the flowchart of FIG. 12.

  The operation of the tube insertion device 2 until the heat transfer tube 5 set on the tube table 20 is held by the holding guide 60 and the fin table 40 on which the radiation fins 6 are mounted is moved to the assembly position is the same as the first embodiment. It is similar.

  After the fin table 40 is transported to the assembly position, the control unit 18 drives the servomotor 16 and the servomotors 731 to 734 to lower the gripping guide 60 and the insertion heads 711 to 714 (step S201). The gripping guide 60 and the insertion heads 71 1 to 714 are stopped at a preparation position where a gap is maintained between the lower end portion of the heat transfer tube 5 and the upper end portion of the radiation fin 6 as shown in FIG.

  After the gripping guide 60 and the insertion heads 711-714 stop at the preparation position, the control unit 18 further drives the servomotors 731-734, and the lowering of the insertion heads 711-714 is started.

  Specifically, first, the servomotor 731 is driven to start lowering the insertion head 711 (step S202). After a predetermined time T has elapsed from the start of lowering of the insertion head 711, the servomotor 732 is driven to start lowering of the insertion head 712 (step S 203). Further, after a lapse of time T from the start of lowering of the insertion head 712, the servomotor 733 is driven to start lowering of the insertion head 713 (step S204).

  As described above, the heat transfer tube 5 is inserted into the notch 6 a in a state of being inclined with respect to the stacking direction of the radiation fins 6 by sequentially lowering the insertion head 711.

  As shown in FIG. 13, when the insertion head 711 reaches the insertion completion position, the control unit 18 stops the servomotor 731 and the lowering of the insertion head 711 is stopped (step S205).

  Subsequently, after a lapse of time T from the start of lowering of the insertion head 713, the servomotor 734 is driven to start lowering of the insertion head 714 (step S206).

  When the insertion head 712 reaches the insertion completion position, the servomotor 732 is stopped and the lowering of the insertion head 712 is stopped (step S207). Further, when the insertion head 713 reaches the insertion completion position, the lowering of the insertion head 713 is stopped (step S208). As shown in FIG. 14, when the insertion head 714 reaches the insertion completion position, the lowering of the insertion head 714 is stopped (step S209).

  After all the insertion heads 71 1 to 714 are stopped and the insertion of the heat transfer tube 5 into the radiation fins 6 is completed, the control unit 18 drives the servomotor 16 and servomotors 731 to 734 to hold the gripping guide 60 and the insertion head. 711-714 are raised to the initial position (step S210).

  Thereafter, the control unit 18 moves the fin table 40 to the fin set position. And a worker takes out the radiation fin 6 in which the heat transfer tube 5 was inserted from an apparatus.

  As described above, the insertion portion 70 of the tube insertion device 2 according to the present embodiment inserts the heat transfer tube 5 in a state in which the heat transfer tube 5 is inclined with respect to the stacking direction of the radiation fins 6. In other words, in the tube insertion device 2, the heat transfer tube 5 is inserted at an angle with respect to the end face of the heat radiation fin 6 on the side of the notch 6 a. Thereby, the stress generated by the frictional resistance between the heat transfer tube 5 and the heat dissipating fins 6 is not only in the surface direction of the main surface of the heat dissipating fins 6 but also in the direction perpendicular to the main surface, ie, in the horizontal direction of the tube insertion device 2 It is generated and distributed. In addition, since stress in a direction perpendicular to the main surface tries to spread the end of the collar 6b of the radiation fin 6, the heat transfer tube 5 is easily inserted into the notch 6a, and the deformation of the radiation fin 6 is suppressed. can do.

  Moreover, the inclination angle of the heat transfer tube 5 can be adjusted by adjusting the time T which is the descent | fall start space | interval of the insertion heads 711-714. Thereby, the direction of the stress applied to the radiation fin 6 can be adjusted. In this embodiment, the descent of the insertion head 711 is stopped before the descent start of the insertion head 714, but the adjustment of the time T causes the descent start of the insertion heads 712 to 714 and the insertion heads 711 to 713 The order of descent stop changes. For example, after the start of lowering of the insertion head 714, the insertion heads 71 1 to 714 may be sequentially stopped.

  Further, in the present embodiment, the heat transfer tube 5 is inclined with respect to the radiation fin 6 by shifting the lowering start timing of the insertion heads 71 1 to 714, but the invention is not limited thereto. For example, by adjusting the outputs of the servomotors 731 to 734, the lowering speed of the insertion heads 711 to 714 may be changed to incline the heat transfer tube 5.

Third Embodiment
Subsequently, a pipe insertion device 3 according to a third embodiment of the present invention will be described. In Embodiment 2, although the heat transfer tube 5 was made to incline by the some insertion heads 711-714, the method of making the heat transfer tube 5 incline is not restricted to this, It is arbitrary. A method of inclining the heat transfer tube 5 different from the second embodiment will be described.

  The tube insertion device 3 according to the present embodiment is different from the first embodiment in that the insertion head 71 of the insertion portion 70 is connected to the slide shaft 72 via the cylinders 76 and 77. The other configuration is the same as that of the first embodiment, so the same reference numerals are given.

  As shown in FIG. 15, the insertion head 71 according to the present embodiment is connected to the top plate 75 connected to the lower end of the slide shaft 72 via cylinders 76 and 77. Specifically, the top plate 75 is connected to the lower end portion of the slide shaft 72. The rotating shafts 78 and 79 are attached to both ends of the heat transfer tube 5 in the longitudinal direction on the lower surface of the top plate 75. The rotating shafts 78 and 79 are connected to one end of the cylinders 76 and 77, respectively. Further, the other ends of the cylinders 76 and 77 are connected to rotation shafts 80 and 81 attached to the upper surface of the insertion head 71, respectively. The cylinders 76 and 77 can be independently expanded and contracted by a drive unit (not shown).

  Subsequently, a method of inserting the heat transfer tube 5 into the radiation fin 6 using the tube insertion device 3 according to the present embodiment will be described with reference to the flowchart of FIG.

  The operation of the tube insertion device 3 until the heat transfer tube 5 set on the tube table 20 is held by the holding guide 60 and the fin table 40 on which the radiation fins 6 are placed is moved to the assembly position is the same as that of the first embodiment. It is similar.

  After the fin table 40 is moved to the assembly position, the control unit 18 drives the servomotor 16 and the servomotor 73 to lower the gripping guide 60 and the insertion head 71 (step S301). The gripping guide 60 and the insertion head 71 are stopped at a preparation position in which a gap is maintained between the lower end of the heat transfer tube 5 and the upper end of the radiation fin 6 as shown in FIG.

  After the gripping guide 60 and the insertion head 71 stop at the preparation position, the control unit 18 extends the cylinder 76 and starts lowering the insertion head 71 (step S302). As shown in FIG. 17, the heat transfer tube 5 is inserted into the notch 6 a in a state of being inclined with respect to the stacking direction of the radiation fins 6 by the extension of the cylinder 76. When the cylinder 76 reaches the stop position, the extension of the cylinder 76 is stopped (step S303).

  Subsequently, the cylinder 77 is expanded (step S304). Thereby, the cylinder 77 side of the heat transfer tube 5 is inserted into the notch 6 a of the heat dissipating fin 6 while the inclination of the heat transfer tube 5 is reduced. As shown in FIG. 18, when the cylinder 77 reaches the stop position, the extension of the cylinder 77 is stopped (step S305).

  After the cylinders 76 and 77 are stopped and the insertion of the heat transfer tube 5 into the heat dissipating fins 6 is completed, the cylinders 76 and 77 are contracted to raise the insertion head 71 (step S306). After the reduction of the cylinders 76 and 77 is completed, the gripping guide 60 and the insertion head 71 are raised to the initial position by the servomotor 16 and the servomotor 73 (step S307).

  As described above, the tube insertion device 3 according to the present embodiment inserts the heat transfer tube 5 in an inclined manner with respect to the stacking direction of the radiation fins 6 by the cylinders 76 and 77. Thereby, the stress generated by the frictional resistance between the heat transfer tube 5 and the radiation fin 6 is not only in the surface direction of the main surface of the radiation fin 6 but also in the direction perpendicular to the main surface, ie, the horizontal direction of the tube insertion device 3 It is generated and distributed. In addition, since stress in a direction perpendicular to the main surface tries to spread the end of the collar 6b of the radiation fin 6, the heat transfer tube 5 is easily inserted into the notch 6a, and the deformation of the radiation fin 6 is suppressed. can do.

  Further, the inclination angle of the heat transfer pipe 5 with respect to the heat dissipating fins 6 can be adjusted by adjusting the time interval of the extension start of the cylinder 76 and the cylinder 77.

  In the present embodiment, the insertion head 71 is inclined by two cylinders of the cylinders 76 and 77, but the invention is not limited to this. For example, one may be a cylinder 76, and the other may be a link that does not extend and contract. Specifically, the cylinder 76 is extended, the insertion head 71 is inclined, and the insertion of the heat transfer tube 5 is started. Thereafter, the insertion head 71 is lowered while reducing the cylinder 76. Thus, the heat transfer tube 5 can be inclined with respect to the stacking direction of the heat radiation fins 6 while simplifying the structure of the insertion portion 70.

Embodiment 4
Subsequently, a pipe insertion device 4 according to a fourth embodiment of the present invention will be described. In the second embodiment and the third embodiment, the heat transfer tube 5 is inclined relative to the heat radiation fin 6. However, the present invention is not limited to this. The heat radiation fin 6 may be inclined relative to the heat transfer tube 5 . Further, both of the heat transfer tube 5 and the radiation fin 6 may be inclined. Hereinafter, the method of inclining the radiation fin 6 is demonstrated.

  The tube insertion device 4 according to the present embodiment differs from the first embodiment in that the fin table 40 includes the crank slider mechanisms 44 and 45. The other configuration is the same as that of the first embodiment, so the same reference numerals are given.

  As shown in FIG. 19, the fin table 40 according to the present embodiment includes crank slider mechanisms 44 and 45 which are angle adjustment units between the base 41 and the fin guide block 42. The crank slider mechanisms 44 and 45 are disposed in the left and right direction of the base 41, that is, at both ends in the longitudinal direction of the heat transfer tube 5.

  The crank slider mechanism 44 includes a servomotor 441, a ball screw 442 for transmitting power of the servomotor 441, a sliding portion 443 constituting the crank slider mechanism 44, links 444 and 445, and a rotating shaft 446.

  As shown in FIG. 19, a servomotor 441 and a ball screw 442 connected to the servomotor 441 are attached to the upper surface of the base 41. The ball screw 442 is connected to the sliding portion 443 fixed to the base 41 and slides one end of the link 444 in the sliding portion 443 in the vertical direction. Also, one end of the link 445 is rotatably connected to the upper end of the sliding portion 443.

  The other end of the link 444 and the other end of the link 445 are rotatably connected to a rotation shaft 446 attached to the lower surface of the fin guide block 42. Thereby, the servomotor 441 can be driven to raise and lower the rotary shaft 446, and the radiation fins 6 mounted on the fin guide block 42 and the fin guide block 42 can be inclined.

  As shown in FIG. 19, the crank slider mechanism 45 includes a servomotor 451, a ball screw 452 for transmitting the power of the servomotor 451, a sliding portion 453 constituting the crank slider mechanism 45, links 454 and 455, and a rotating shaft 456. The crank slider mechanism 44 is configured in the same manner as the crank slider mechanism 44. As a result, the servomotor 451 can be driven to raise and lower the rotary shaft 456, and the radiation fins 6 mounted on the fin guide block 42 and the fin guide block 42 can be inclined.

  The crank slider mechanisms 44 and 45 are configured as described above, and incline the stacking direction of the radiation fins 6 on the fin table 40 with respect to the heat transfer tube 5 as an angle adjustment unit.

  Subsequently, a method of inserting the heat transfer tube 5 into the radiation fin 6 using the tube insertion device 4 according to the present embodiment will be described with reference to the flowchart of FIG.

  The operation of the tube inserting apparatus 4 until the heat transfer tube 5 set on the tube table 20 is gripped by the gripping guide 60 and the fin table 40 on which the radiation fins 6 are placed is moved to the assembling position is described in the first embodiment. It is similar.

  After the fin table 40 is transported to the assembly position, the control unit 18 drives the servomotor 16 and the servomotor 73 to lower the gripping guide 60 and the insertion head 71 (step S401). The gripping guide 60 and the insertion head 71 are stopped at a preparation position where a gap is maintained between the lower end portion of the heat transfer tube 5 and the upper end portion of the radiation fin 6, as shown in FIG.

  After the gripping guide 60 and the insertion head 71 stop at the preparation position, the control unit 18 drives the servomotor 441 (step S402), and the link 444 connected to the sliding portion 443 starts to ascend (step S403). ). As a result, the heat dissipating fins 6 placed on the fin guide block 42 and the fin guide block 42 rotate around the rotation shaft 456 and incline relative to the gripping guide 60 and the heat transfer tube 5. As shown in FIG. 21, when the inclination angle of the radiation fin 6 reaches a predetermined inclination angle, the ascent of the link 444 is stopped (step S404).

  Subsequently, the control unit 18 drives the servomotor 73 to start lowering the insertion head 71 (step S405). As a result, the heat transfer tube 5 is inserted into the notch 6 a of the radiation fin 6.

  Subsequently, the servomotor 451 is driven, and the link 454 connected to the sliding portion 453 starts to ascend (step S406).

  As shown in FIG. 22, when the insertion head 71 reaches the lowering completion position, the control unit 18 stops the servomotor 73 to stop the lowering of the insertion head 71 (step S407).

  Subsequently, as shown in FIG. 23, when the link 454 connected to the sliding portion 453 reaches the stop position and the radiation fin 6 becomes parallel to the heat transfer tube 5, the ascent of the link 454 is stopped. (Step S408).

  After the links 444 and 454 are stopped and the insertion of the heat transfer tube 5 into the radiation fin 6 is completed, the gripping guide 60 and the insertion head 71 are raised to the initial position by the servomotor 16 and the servomotor 73 (step S409) .

  Subsequently, the link 454 connected to the sliding portion 453 is lowered (step S410), and the link 444 connected to the sliding portion 443 is lowered (step S411). Thereafter, the base 41 and the fin guide block 42 are moved to the set position, and the radiation fin 6 after insertion of the heat transfer tube 5 is taken out from the tube insertion device 4.

  As described above, the pipe insertion device 4 according to the present embodiment inserts the heat transfer tube 5 by inclining the heat transfer tube 5 with respect to the end face of the radiation fin 6 by the crank slider mechanisms 44 and 45. Thereby, the stress generated by the frictional resistance between the heat transfer pipe 5 and the heat dissipating fins 6 is not only in the plane direction of the main surface of the heat dissipating fins 6 but also in the direction perpendicular to the main surface. It is generated and distributed. In addition, since stress in a direction perpendicular to the main surface tries to spread the end of the collar 6b of the radiation fin 6, the heat transfer tube 5 is easily inserted into the notch 6a, and the deformation of the radiation fin 6 is suppressed. can do.

  Further, since the crank slider mechanism 44, 45 is provided on the fin table 40, the heat transfer tube 5 can be inserted into the heat dissipating fin 6 while the heat transfer tube 5 is inclined while simplifying the configuration of the insertion head 71.

  In the present embodiment, although the fin guide block 42 and the radiation fin 6 are inclined by the crank slider mechanisms 44 and 45, the invention is not limited thereto. The angle adjustment unit may be any mechanism that can tilt the fin guide block 42, and may be, for example, a simple slider.

  Further, in the present embodiment, two crank slider mechanisms 44 and 45 are used, but the present invention is not limited to this. For example, one may be a crank slider mechanism and the other may be a simple slider.

1, 2, 3, 4 tube insertion device, 5 heat transfer tubes, 5a flow holes, 6 radiation fins, 6a notches, 6b collars, 11 base frames, 12 head frames, 13 guide frames, 14, 15 slide shafts, 16 Servo motor, 17 power jacks, 18 control units, 20 tube tables, 21 bases, 22 tube positioning blocks, 23 knock pins, 30 tube transfer units, 31 and 51 linear guides, 31a and 51a slide portions, 32 and 52 servo motors, 33 , 53 ball screw, 40 fin table, 41 base, 42 fin guide block, 44, 45 crank slider mechanism, 441, 451 servo motor, 442, 452 ball screw, 443, 453 sliding portion, 444, 445, 454, 455 Link, 446, 456 Rotor shaft, 50 fin transport section, 60 grip guides, 60a slit, 60b ball plunger, 70 insertion section, 71, 711, 712, 713, 714 insertion head, 71a push out section, 72, 721, 722, 723, 724 slide shaft , 73, 731, 732, 733, 734 Servo motor, 74, 741, 742, 743, 744 Power jack, 75 top plate, 76, 77 cylinder, 78, 79, 80, 81 rotation shaft

Claims (6)

An insertion portion for inserting a heat transfer tube into a notch portion of the radiation fin;
And a fin table on which the plurality of heat dissipating fins can be mounted;
The fin table is
A guide portion which restricts the outer shape of the heat dissipating fins stacked in a state where the heat dissipating fins are in close contact with each other by bringing a collar erected at the edge of the notch of the heat dissipating fin into contact with the adjacent heat dissipating fins Have
Tube insertion device. The guide unit is
Restricting the length of the radiation fin in the stacking direction and the length of the radiation fin in the longitudinal direction,
The pipe insertion device according to claim 1. The insertion portion is
And an insertion head for inserting the heat transfer tube in an inclined state with respect to the stacking direction of the heat radiation fins.
The pipe insertion device according to claim 1 or 2. The fin table is
An angle adjusting unit is provided to incline the stacking direction of the heat dissipating fins with respect to the heat transfer tube.
The pipe insertion device according to any one of claims 1 to 3. A fin laminating step of bringing a collar erected at an edge of a notch of the heat dissipating fin into contact with the adjacent heat dissipating fin, and laminating the heat dissipating fins in close contact with each other;
Inserting a heat transfer pipe into the notch of the heat dissipating fin laminated in the fin laminating step;
Tube insertion method. An inclination step of inclining the heat transfer tube before insertion with respect to the stacking direction of the heat radiation fins;
The pipe insertion method according to claim 5.

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