JP3315152B2 - Stack pin removal / insertion device for stack pin holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for extracting and inserting a stack pin into a stack pin holder in a heat exchanger assembling apparatus.

[0002]

2. Description of the Related Art As shown in FIG. 28, a heat exchanger assembling apparatus inserts a pipe 11 bent in a U-shape into a pipe insertion hole of a plurality of fins 10 which are stacked with a fixed gap therebetween. And fixing the fins 10 to the pipe 11. The ends of the plurality of pipes 11 are appropriately connected by a U-shaped connection pipe (not shown),
The heat medium is made available for circulation. An automatic assembling apparatus for this heat exchanger assembling apparatus has been developed. As shown in FIG. 29, the pipe insertion device in this conventional automatic assembling apparatus inserts the stack pins 12 into a large number of fins 10 and stacks and supports the large number of fins 10 on a stack pin holder 13. The fins 10 in the stacked state are placed on the support base 14 as shown in FIG. 30, and the pipe 11 held by the guide 15 is pressed from the side by the pusher 16 to insert the pipe into the pipe insertion hole of the fin 10. 11 is inserted.

[0003]

By doing so, the pipe 11 can be automatically inserted into the pipe insertion hole of the fin 10. However, the above device has the following disadvantages. That is, the pipe 11 is generally made of a copper material having good heat conductivity. However, since the copper material is soft, the pipe 11 having a length of about 1 m is inserted into the fin 10 from the lateral direction as described above. Sometimes the gravity causes the pipe 11
Especially at the tip end of the guide 1
5 was difficult, the tip of the pipe 11 could not be accurately positioned in the pipe insertion hole of the fin 10, and the insertion often became impossible. Also, the fins 10 stacked on the stack pin holder 13 are placed horizontally on the support base 14 as shown in FIG. 30 so that the fins 10 are aligned with the upper surface of the support base 14 as a reference plane. Since the width of the fins varies in the manufacturing process, when a large number of the fins 10 are stacked and placed horizontally on the upper surface of the support 14, the positions of the pipe insertion holes of the respective fins 10 are vertically shifted. At this time, the tip of the pipe 11 is caught on the edge of the pipe insertion hole, and there is a problem that the pipe 11 cannot be inserted or the pipe insertion hole is deformed. In addition, the fin 10
Is formed by processing an aluminum sheet, and there is a problem that the fins 10 are easily deformed when a plurality of stacked fins 10 are placed horizontally on the upper surface of the support base 14.

Accordingly, the present invention provides a heat exchanger assembling apparatus which solves the above-mentioned problems by inserting a pipe from above, and in which a stack pin is automatically pulled out and inserted into a stack pin holder to fully automate pipe insertion. It is an object of the present invention to provide a stack pin pull-out / insertion device which enables the following.

[0005]

The present invention has the following arrangement to achieve the above object. That is, a pipe into which a U-shaped bent pipe is inserted from above into a pipe insertion hole of a fin that has a plurality of stacked fins stacked on the stack pin holder through which stack pins erected vertically are inserted on the stack pin holder. Stack pin withdrawal from stack pin holder in heat exchanger assembly device with insert
In the insertion device, the stack pin is planted, and a stack pin holder on which a number of fins are stacked is transported through the pipe insertion section, and the stack pin holder is transported in parallel with the forward path for transport. The fin device into which the pipe has been inserted on the forward path is removed, and the return path for transporting the vacant stack pin holder is disposed over the forward path and the return path. After being inserted, the stack pin is pulled out from the stack pin holder, and the stack pin is inserted into the stack pin insertion hole of the stack pin holder located on the return path. . Further, in the present invention, the stack pins vertically set on the stack pin holder are inserted and bent in a U-shape from above into the pipe insertion holes of the fins stacked in a large number in two rows on the stack pin holder. In the heat exchanger assembling apparatus having a pipe insertion part for inserting the inserted pipe, in the stack pin pulling / inserting device to the stack pin holder, the stack pins are erected in two rows, and a large number of fins are arranged in two rows. An outward path for transporting the stacked pin holders via the pipe insertion section and a fin device in which a pipe is inserted in parallel with the outward path and the pipe is inserted on the outward path are removed. After the pipe is inserted in the return path for transporting the empty stack pin holder and the pipe in the forward path, the stack A first withdrawing position for withdrawing the pin, located on the downstream side of the forward path than the first withdrawal position,
A second withdrawal position where the stack pins of the inner row of the stack pin holder are withdrawn, and an empty space located on the return path opposite to the second withdrawal position where the stack pins withdrawn at the second withdrawal position are conveyed on the return path. A first insertion position to be inserted into the stack pin insertion hole of the inner row of the stack pin holder, and a return passage downstream of the first insertion position, the position being opposed to the first extraction position. A second insertion position for inserting a stack pin pulled out at a first extraction position into a stack pin insertion hole of a corresponding outer row of a stack pin holder, and between the first extraction position and the second insertion position. The stack pin is provided straddling and pulls out the stack pin outside the stack pin holder at the first pull-out position, and removes the stack pin pulled out before the stack pin holder is transported to the second insertion position. (2) When the stack pin holder into which the stack pins of the inner row are inserted is transported at the first insertion position when the stack pin holder is transported to a position above the insertion position, the stack pin holder is inserted into the stack pin insertion hole of the outer row of the stack pin holder. A pull-out / insertion device into which the stack pin is inserted, and a straddle provided between the second pull-out position and the first plug-in position, and a stack pin inside the stack pin holder at the second pull-out position. Withdrawing and inserting the stack pins into the stack pin insertion holes in the corresponding inner row of the stack pin holder being conveyed to the first insertion position while carrying out the stack pins withdrawn to the first insertion position side And a device.

[0006]

The stack pin holder in which the stack pins are inserted and many fins are stacked and held is transported on the outward path,
The pipe is inserted from above into the pipe insertion hole of the fin by the pipe insertion device. The stack pins are pulled out of the fin device into which the pipe is inserted by the stack pin pull-out / insertion device, and are conveyed on the corresponding return path.The stack pins are inserted into the stack pin insertion holes of the stack pin holder from which the fin devices have been removed. Is inserted.
Since the pipe is inserted into the pipe insertion hole of the fin from above, the stack pin can be stood upright and the stack pin holder can be transported, and therefore, during the transport process of the stack pin holder, The pulled-out stack pin can be easily inserted into the stack pin insertion hole of the stack pin holder on the corresponding return path, which facilitates automation of pipe insertion.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Figure 1 shows a heat exchanger (fin device)
1 shows a plan view of the entire assembly device. In the figure, reference numeral 20 denotes a fin manufacturing unit, which includes a press machine 21, a remote cutting device 2
2 is provided. In the press machine 21, the aluminum sheet wound around the roll is drawn out and pressed to continuously process into a plurality of rows of fins 24 having pipe insertion holes 23 and the like as shown in FIG. Remote cut device 22
Then, the fins 24 formed in a plurality of rows are separated and cut into each row, and the fins 24 in each row are cut into a predetermined length. In FIG. 1, reference numeral 26 denotes a circulation path for the pallet 27 for accumulation. As shown in FIG. 3, the stacking pallet 27
A plurality of stack pin holders 29 having the stack pins 28 erected at predetermined positions are placed.

In the circulation path 26 of the stacking pallet 27, at position A, the fins 24 cut to a predetermined length by the remote cutting device 22 are pushed into the stack pins 28, and the stack pins on the stack pin holders 29 are stacked. 28
The fins 24 are stacked on the stack pin holder 29 with the pipe insertion holes 23 inserted. Fins 24 are stacked on each stack pin holder 29 in two rows. At a position B (stack pin holder transfer position) of the circulation path 26, the stack pin holders 29 on the stacking pallet 27 are sequentially transferred one by one by the transfer device 25 described later on the circulation conveyor 30 (circulation pallet transfer path). Is transferred onto the circulating pallet 31 (FIG. 18). The stack pin holder 29 transferred on the circulation conveyor 30 is circulated on the circulation conveyor 30, and a pipe is inserted through the fins 24 as described later, and the fin device into which the pipe is inserted is moved from the stack pin holder 29 onto the stack pin holder 29. The empty stack pin holder 29 is taken out and the stack pin holder 29 is sequentially transferred to the circulating pallet 31 on the circulating conveyor 30 at the position B and emptied to a position C ( The transfer pallet 3 on the circulating conveyor 30 by the transfer device having the same configuration as the transfer device on the stacking conveyor 27 moving to the transfer position).
The stacking pallets 27 and the stack pin holders 29 which have been transferred into the stack pallet 27 and the stack pin holders 29 thus transferred are sequentially returned to the position A, whereby the stacking pallets 27 and the respective stack pin holders 29 are circulated and work is continuously performed. It is.

Next, in FIG. 1, reference numerals 50 and 51 denote pipe insertion devices. The pipe insertion devices 50 and 51 are disposed along the path of the circulation conveyor 30. The reason why the two pipe insertion devices are provided in this manner is that a predetermined number of pipes are inserted into the pipe insertion holes of the fins 24 by the preceding pipe insertion device 50, and then disposed near the pipe insertion device 50. The stack pins 28 are removed by the stack pin extracting / inserting device 54.
From the stack pin holder 29, and then insert the pipes into the remaining predetermined number of pipe insertion holes including the pipe insertion holes 23 after the stack pins 28 have been extracted by the subsequent pipe insertion device 51. . In addition, when the diameter of the pipe to be inserted is set to 7.0 mm, setting the diameter of the pipe insertion hole of the fin 24 to about 7.3 mm and the diameter of the stack pin to about 7.1 mm makes the insertion of the pipe easier. . The fin device into which the pipes are inserted and assembled in this way is taken out on the conveyor 53 by the reversing device 52 at the final position D on the outward path of the circulating conveyor 30 and is conveyed to a tube expansion device (not shown). Is expanded by a known mechanism. The fin device is taken out at the final position D, and the empty stack pin holder 29 is moved on the return path of the circulation conveyor 30 as described above, and during this time, the stack that has been previously pulled out by the stack pin pulling / inserting device 54 is moved. Pin 2
8 is again inserted into the stack pin holder 29 on the return path, and is transferred from the final end of the return path onto the stacking pallet 27 at the C position (transfer position). In addition, the stack pin 2
In the case of a fin device of a type in which a pipe is not inserted into the pipe insertion hole through which 8 has been inserted, only one pipe insertion device may be provided.

Next, details of each part will be described. First, the transfer device 25, the stack pin holder 29, the circulation pallet 31
Will be described. The stack pin holder 29 is shown in FIG.
As clearly shown in FIG. 1, the stack pin 28 has an insertion hole (insertion hole) 32 into which the stack pin 28 is inserted. Stack pin holder 2
A transfer device 25 (and a transfer device) to be described later is provided on the front of 9.
The two support holes 33 into which the finger pins are inserted are provided. Also, two pins 34 (1) projecting from the upper surface of the circulating pallet 31 are provided on the lower surface of the stack pin holder 29.
(Only one is shown) is provided. Accordingly, the stack pin holder 29 holds the circulating pallet 31 in a state where the pin 34 fits into the positioning hole 35.
By being placed on the pallet, it is positioned on the circulating pallet 31 and is supported and supported by the pins 34. The stacking pallet 27 is also provided with pins (not shown) corresponding to the respective positioning holes 35 of the plurality of stack pin holders 29. The holder 29 can be placed on the stacking pallet 27 in parallel. Support walls 36 are erected on both ends of the circulating pallet 31, and the fins 24, through which the stack pins 28 are inserted and held in a stacked state, are held on both sides of the support walls 36 from both sides. And the holding portion 3 for preventing the fins 24 from falling down.
7 are provided. The holding portion 37 is formed by attaching a bifurcated holding member 40 to the tip of a rod 39 slidably guided by a guide 38. The rod 39 is guided by a guide 38 so as to be able to stop at an appropriate position. Therefore, after the stack pin holder 29 in which the fins 24 are held in a stacked state is placed on the circulation pallet 31 as described above, the rod 39 is pressed to move the holding member 40, and the fin 24 is held by the holding member 40. The fins 24 can be held by sandwiching both sides of the fins 24.
The movement of the rod 39 can be automatically performed by appropriately pressing with a pressing member, or by employing a cylinder mechanism or the like.

The transfer device 25 shown in FIG.
And the stack pin holders 29 are transferred one by one from the stacking pallet 27 located at the position B onto the corresponding circulation pallet 31. . 41 is guided by a rail 42,
The moving body is provided horizontally movably between the side of the stacking pallet 27 located at the transfer position and the position of the circulation conveyor 30 corresponding to the transfer position. The driving mechanism of the moving body 41 is a motor and a screw rod (not shown).
It consists of. An elevating body 44, which is guided by a shaft 43 and moves up and down, is provided below the moving body 41. The elevating mechanism of the elevating body 44 is also constituted by a motor and a screw rod. The elevating body 44 is provided with a cylinder device 45 into which a rod projects in a direction perpendicular to the moving direction of the moving body 41 and the elevating direction of the elevating body 44, and a fixed plate 46 is attached to the rod end. A support hole 33 provided in the front of the stack pin holder 29 below the fixing plate 46
The two finger pins 47 described above, which can be fitted into the support holes 33, are provided so as to correspond to the support holes 33. Also, an arm 48 (FIG. 18) protrudes forward from the moving body 41,
At the tip of the arm 48, a pressing projection 49 is provided which can press the upper surface of the stack pin holder 29 when the stack pin holder 29 is raised. This pressing projection 49 is received by a spring (not shown) on the arm 48. Although not shown, a cylinder device is disposed on an arm projecting forward from the upper portion of the moving body 41, and when the stack pin holder 29 is raised, the fins 24 stacked by the cylinder device are pressed from above. It is provided as possible.

Since the moving body 41 is driven as described above, the finger pins 47 are moved to the transfer position C. The front side of the stack pin holder 29 of the stacking pallet 27 to be transferred. And move it to the position
Next, the cylinder device 45 is driven to drive the finger pins 47.
To move the finger pin 47 into the corresponding support hole 33.
Is inserted into the stack pin holder 29 on the pallet 27 for stacking.
Are lifted up by the finger pins 47 and disengaged from the fitting state of the stacking pallet 27. At this time, the upper surface of the stack pin holder 29 is pressed by the pressing protrusion 49, and the fins 24 are also pressed by the cylinder device from above, so that the stack pin holder 29 is stably lifted by the finger pins 47 together with the fins 24. In this state, the rod is retracted by the cylinder device 45, and the moving body 41 is further moved to the circulation conveyor 30 corresponding to the transfer position C.
The stacking pallet 31 is moved to a position located in front of the circulating pallet 31 being transferred, and then the rod is advanced by driving the cylinder device 45 so that the stack pin holder 29 is moved above the circulating pallet 31. Next, when the elevating body 44 is lowered, the pins 34 are fitted into the positioning holes 35 provided on the lower surface of the stack pin holder 29. Here, the rod is retracted by the cylinder device 45, and the finger pins 47 are withdrawn from the support holes 33, whereby the stack pin holder 29 is transferred from the stacking pallet 27 onto the circulation pallet 31. After the stack pin holder 29 is transferred onto the circulating pallet 31, the holding member 40 is pushed forward by appropriate means to move forward and support both sides of the fin 24 so that the fin 24 is supported.
Is conveyed on the circulation conveyor 30 without falling down.

Next, the pipe insertion devices 50 and 51 will be described. Since both have almost the same structure, the pipe insertion device 50 will be described. FIGS. 4, 5, and 6 are a front view, a side view, and a plan view of the pipe insertion device 50, respectively. As described above, the stack pin holders 29 on which the fins 24 are stacked and transferred onto the circulation conveyor 30 are conveyed by the circulation conveyor 30 and the pipe insertion device 5
At a point where the sheet is conveyed to the front of 0, it is stopped at a predetermined position by an appropriate stop mechanism, positioned, and waits. The mounting portion of the stack pin holder 29 is not limited to the conveyor type, but may be a fixed type. In the figure, 70 is a pipe supply section, 72 is a pipe pushing section, and 74 is a guide section.

Next, the pipe supply unit 70 will be described.
2. Description of the Related Art A pipe bending apparatus for bending a long pipe into a U-shape and cutting the pipe into a predetermined length is known. In FIG. 1, 5
Numeral 5 is the pipe bending line. The pipe 57 bent in a U-shape in the pipe bending line 55 is transferred onto a horizontal rod 59 of a lifting device 58 (FIG. 5) of the pipe supply unit 70. The lifting device 58 is driven to move the horizontal rod 5
When 9 rises, the pipe 57 straddles the horizontal rod 59 at the U-shaped bent portion and is supported vertically. At the position where the horizontal rod 59 is raised to the upper part of the lift device 58, the horizontal rod 59 is turned toward the distributing device 60 by rotating the lift device 58 by 180 degrees about its vertical axis (see FIG. 5). The distributing device 60 has an endless conveyor 61 which is driven to rotate in an elliptical orbit in a horizontal plane. The endless conveyor 61 is provided with a number of rods 62 projecting horizontally outward. The endless conveyor 61 is stopped at a position where the rod 62 coincides with the position of the horizontal rod 59, where the cylinder 63 is driven, and the pipe 57 on the horizontal rod 59 is transferred onto the rod 62. In this way, a predetermined number of pipes 5 are placed on each rod of the distribution device 60.
7 is transferred and stocked.

A lift device 64 is disposed on the opposite side of the lift device 58 with respect to the distribution device 60 and located on the back side of the pipe insertion device 50. The pipe 57 is transferred from the rod 62 of the distributing device 60 to the horizontal rod 65 of the lifting device 64 by the same mechanism as described above, rises, and is rotated by 180 degrees at the upper part thereof, so that each corresponding shooter 66 (an example of a supporting portion) ). Nine shooters 66 are provided. Each shooter 66 is disposed diagonally as shown in the figure, and as shown in FIG.
The pipes 57 can be supplied one by one to the lowermost end of the shooter 66 by two stopper cylinders 67 and 68 provided on the side of the shooter 66. That is, in the stopper cylinder 67, the stopper provided at the rod end is the shooter 66.
The upper pipe 57 can be held in contact with the second pipe 57 from the bottom, and the stopper provided at the rod end of the stopper cylinder 68 can be held in contact with the lowermost pipe 57. And the preceding pipe 57 already supplied to the lowermost end of the shooter 66
As described later, the fins 24 are
After being pushed into the stopper cylinder 68 is opened,
Thereby, the lowermost pipe 57 can supply one by one to a predetermined position at the lowermost end of the shooter 66. A sensor 69 is provided at the lowermost position of the shooter 66, and two conducting portions are provided on the sensor 69 via an insulator, and the pipe 57 is supplied to the lowermost end of the shooter 66. In this case, both conducting portions are electrically short-circuited by the pipe 57, and by detecting this with a detecting device (not shown), it is possible to detect that the pipe 57 exists at the lowermost end of the shooter 66.

Next, the pipe pushing section 72 will be described.
Reference numerals 75, 75 denote vertical moving plates, which are screwed at their side edges to two screw rods 77, 77 arranged vertically on the machine base 76, and which are vertically moved by the rotation of the screw rods 77 by the motor 78. It is provided movably. 79 is a guide rail. As shown in FIG. 6, the front and rear moving plates 80 are provided on the upper and lower moving plates 75, 75. The front and rear moving plate 80
Both ends of the front and rear moving plate 80 slide on the sliding rods 81 provided in the vertical moving plates 75, 75, and are guided by the sliding rods 81, 81 so as to be movable forward and backward. Both ends of the front and rear moving plate 80 are vertically moving plates 75, 75.
Through the through holes in the front-rear direction provided in
Has entered. Reference numerals 83, 83 denote cylinders arranged on the vertical moving plates 75, 75, each of which has a rod end connected to an end of the front and rear moving plate 80, and drives the front and rear moving plate 80 in the front and rear direction.

On the front side of the front and rear moving plate 80, nine press-in die units 84 are arranged vertically. Reference numeral 85 denotes a mounting base, which is provided with a die slide hole 86 that opens in the vertical direction.
Are slidably movable in the vertical direction. The mounting base 85 is guided movably in the lateral direction along a guide 89 provided on the front surface of the front and rear moving plate 80 in the lateral direction. Mounting stand 8
5, a fixing pin 90 protruding from the rear surface is slidably fitted into an opening 91 provided in the front-rear moving plate 80 in a lateral direction, and the front end protrudes toward the rear surface of the front-rear moving plate 80. The rod 93 of the positioning cylinder 92 fixed to the rear surface of the front and rear moving plate 80 is connected. Rod 93
9, an abutment plate 94 is fixed as shown in FIG. 9, and the abutment plate 94 comes into contact with stopper plates 95 and 96 provided on the front and rear moving plate 80, whereby the rod 93, and hence the push-in die device The horizontal movement range of 84 is determined. Reference numeral 97 denotes a stopper cylinder. When the stopper cylinder 97 is driven, a stopper 98 provided at the end of the rod enters between the stopper plate 96 and the plate 94 to move the rod 93 within the above-described movement range. Can be stopped at an intermediate point between the two. That is, the push-in die device 84 can stop its lateral movement over three positions. The positioning cylinder 92, the stopper cylinder 97 and the like constitute the position adjusting means of the press-in die device 84, but are not limited thereto.

Reference numeral 100 denotes a press-in cylinder, which is fixed to the front side of the mounting base 85 in the vertical direction. The upper end of the rod 101 is connected to the upper end of the press-in die 87 via a connecting plate 102. ing. Accordingly, the push-in cylinder 87 is driven, and the rod is moved forward and backward, so that the push-in die 87 is moved up and down. The lower part of the rear surface of the mounting base 85 is missing, and the rear side of the die slide hole 86 is open. Regulation guides 10 are provided on both sides of the opening.
4 and 104 are provided.
The lower part of the opposing wall surfaces of 4, 104 is formed in a tapered surface that spreads outward. The lower end surface of the press-in die 87 is formed in an arc surface along the arc of the U-shaped bent portion of the pipe to be inserted. Reference numeral 105 denotes a chuck as an example of a holding means, which is rotatably provided around a shaft 106 at a lower portion on the rear surface side of the mounting base 85, is rotated by a cylinder 107, and has an upper end of a pipe between the mounting base 85 and the opening. The side can be clamped. The rod end of the cylinder 107 is rotatably mounted on a pin 109 fixed to the rear surface of the mounting base 85.

Next, the guide portion 74 will be described. The guide part 74 is provided below the pipe pushing part 72.
Reference numeral 120 denotes a support plate (FIG. 4), and both side edges thereof are
Is guided by a guide pole 121 provided in the vertical direction, and is slidable in the vertical direction. Support plate 12
At 0, a screw rod 122 rotatably supported by the machine base 76 is screwed, and the screw rod 122 is rotationally driven by a motor 123 so that the support plate 120 is stopped and positioned at a predetermined position in the vertical direction. 12 and 14, 125
Reference numeral denotes a regulating guide member, and nine regulating guide members are provided on the back surface side of the support plate 120 so as to correspond to the press-in die device 84 of the pipe press-in portion 72. Each regulating guide member 125 is provided with a guide hole 126 through which the pipe 57 can pass vertically. The upper part of the guide hole 126 is enlarged upward as shown in FIGS. 12 and 14 and the lower end of the pipe 57 pushed in from the pipe pushing part 72 can be easily inserted into the guide hole 12.
Guide to enter 6. The outer width of the pipe 57 pushed into the guide hole 126 is regulated by the inner wall of the guide hole 126.

Each of the regulating guide members 125 includes a support plate 120.
Is guided by a rail 128 disposed horizontally on the rear surface of the device, and is movable in the lateral direction. A fixing pin 129 protruding from the front surface of the regulating guide member 125 is attached to the support plate 120.
And slidably fits into an opening 130 provided in the lateral direction, and a front end portion thereof projects to the front side of the support plate 120,
The rod 132 of the positioning cylinder 131 fixed to the front surface of the support plate is connected to this tip. 13
3 is a stopper cylinder. This positioning cylinder 1
31 and the stopper cylinder 133
2 is formed in the same structure as the positioning cylinder 92 and the stopper cylinder 97 for positioning the press-in die device 84,
Positioning adjustment means for positioning and stopping each of the regulating guide members 125 at three positions in the horizontal direction is configured.

Reference numeral 135 denotes a regulating cylinder, which is disposed on the lower front surface of the regulating guide member 125. A regulating member 136 provided at the tip of the rod is provided so as to protrude into the guide hole 126 of the regulating guide member 125. . Control member 13
6 has a side surface and a guide hole 126 as shown in FIG.
A gap is provided between the inner wall and the inner wall so that the pipe 57 can pass therethrough, and the upper surface thereof is formed in an arc shape. Therefore, the pipe 57 pushed into the guide hole 126 is guided by the upper surface of the regulating member 136 and pushed into the gap. As a result, the pipe 57 is inserted into the guide hole 12.
The inner wall 6 restricts the outer side and the side surface of the restricting member 136 restricts the inner side, so that the width of the lower end of the pipe 57 is accurately set.

Next, the regulating portion will be described with reference to FIGS. The restricting portion is located between the vertical moving plates 75, 75 and the guide portion 74, regulates the position of the lower end of the pipe 57, and guides the pipe 57 to the guide portion 74. Reference numeral 137 denotes a support plate (only one is shown), which is attached to each of the vertical moving plates 75. A cylinder 138 is fixed to both support plates 137,
The movable plate 139 is suspended between the rods of the respective cylinders 138, and the movable plate 1 is driven by driving the cylinders 138.
39 is moved up and down. On the lower surface of the movable plate 139, a horizontal moving plate 141 that can reciprocate in a direction perpendicular to the upper surface of FIG. Horizontal moving plate 14
As shown in FIG. 17, a regulating plate 143 having a large number of V-shaped notches 142 provided on the front end face is fixed to 1.
17 between the lower surface of the horizontal moving plate 141 and the regulating plate 143.
A slide plate 144 is interposed so as to be movable in the upper and lower directions. The slide plate 144 is connected to and driven by a rod of a cylinder 145 fixedly arranged on the horizontal moving plate 141. A notch 146 having a substantially rectangular shape is also formed on the front end surface of the slide plate 144. The notch 142 and the notch 146 have a large opening at the position where they overlap in the vertical direction, and their front ends open, and are narrowed when the slide plate 144 moves, as shown in FIG.
47 is formed. The interval between adjacent regulating holes 147 is set equal to the width of the lower end of the pipe 57 to be regulated.

Next, the pipe pushing operation will be described. As described above, the stack pin holders 29 are transferred onto the circulating pallet 31 and conveyed on the circulating conveyor 30, so that the stack pins 28 are inserted and the fins stacked in two rows on the stack pin holder 29 are provided. 24 is conveyed to a predetermined position (placement portion) below the front side of the pipe insertion device 50 and stops. Each regulation guide member 125 of the guide portion 74
Has been previously moved to a predetermined one of three movable positions by a positioning cylinder 131 and a stopper cylinder 133 in accordance with the insertion position pattern of the pipe insertion hole 23 of the fin 24 into which the pipe 57 is to be inserted.
Although nine regulating guide members 125 are provided in the illustrated example, not all of them are used. It is appropriately selected and used depending on the number of pipes 57 to be inserted.

A large number of U-shaped pipes 57 are supplied from the pipe supply section 70 to the shooter 66 of the pipe pushing section 72 as described above, and one of them is provided at the lowermost end thereof. Is supplied and supported in a suspended state. As described above, when the sensor 69 detects that the pipe 57 is being supplied, the cylinders 83, 83 are driven to retreat the front-rear moving plate 80, and the push-in die device 84 is moved so that the chuck 105 is located immediately above the shooter 66. Will be moved to the location At this time, the motor 78 is driven, and the front and rear moving plate 80 and therefore the press-in die device 84 are lowered together with the vertical moving plates 75, 75, and the chuck 105 is moved.
Descends to a position corresponding to the upper part of the pipe 57. At this time, as clearly shown in FIG. 10, the U-shaped portion at the top of the pipe 57 enters between the regulating guides 104, 104 by the lowering of the press-in die device 84, and the width thereof is regulated. Although the width of the lower portion of the pipe 57 is not yet restricted, the extreme bending is corrected by restricting the width of the upper portion of the pipe 57.

The chuck 105 is formed in a bifurcated shape as shown in FIG.
Not to be disturbed. Here cylinder 10
7 is driven, the corresponding chuck 105 is rotated, and the upper portion of the pipe 57 is held between the chuck 105 and the mounting base 85. Next, the motor 78 is driven and the press-in die device 84 is
Is lifted to a position where it does not hinder the removal of the cylinder, and then the cylinders 83, 83 are driven to advance the front and rear moving plate 80,
The press-in die device 84 stops at a position immediately above the guide portion 74. Here, the positioning cylinder 92 and the stopper cylinder 97 are driven, and the press-in die device 84 is moved laterally so that the press-in die device 84 is located immediately above the corresponding regulating guide member 125. That is, the press-in die device 8
4 moves in accordance with the arrangement of the shooters 66 when the pipes 57 are picked up by the shooter 66, and is moved in accordance with the pattern of the regulating guide members 125 when coming above the guide portions 74. When the pipe is a dedicated model and the pipe insertion pattern does not fluctuate, the lateral moving mechanism of the press-in die device 84 and the regulating guide member 125 is not necessary. Just set it.

Next, the cylinder 140 of the regulating portion is driven to move the horizontal moving plate 141 in the direction of the base of the pipe 57, and the base of the pipe 57 enters between the notches 142 and 146 where the regulating plate 143 and the slide plate 144 overlap. Then, when the slide plate 144 is slid in the horizontal direction by the cylinder 145, the pipe 57 is bent by the restriction hole 147, twist is corrected, and the width is restricted. Here, the motor 78 is driven, the push-in die device 84 is lowered together with the vertical moving plates 75, 75, and the lower portion of the pipe 57 held by the chuck 105 is guided by the guide hole 1 of the regulating guide member 125.
Enter into 26. At this point, the motor 78 is stopped,
Also, while the holding by the chuck 105 is released,
The pushing cylinder 100 is driven, and the pushing die 87 descends, whereby the pipe 57 is pushed deep into the guide hole 126. After the lower end of the pipe 57 enters the guide hole 126, the width regulation by the regulation plate 143 and the slide plate 144 is released. When the pipe 57 enters the guide hole 126, the lower side of the pipe 57 passes through the gap between the side surface of the regulating member 136 protruding into the guide hole 126 and the inner wall of the guide hole 126, and the outer side of the lower end of the pipe 57. The width of both the inside and the inside is regulated. Even when the pipe 57 is pushed, the lower end of the pipe 57 enters the predetermined pipe insertion hole 23 of the fin 24. At this stage, the regulating member 136
Is retracted from the guide hole 126, whereby the press-in die 8 is moved.
7 can pass, the press-in die 87 is still lowered, and the pipe 57 is inserted into the fin 24 at a predetermined depth.

At the time when the press-in die 87, the vertical moving plates 75, 75, etc. are raised and returned to the initial state, the stack pin pulling / inserting device 5 equipped with an appropriate chuck device as described later.
4, the stack pin 28 is pulled out. Next, the stack pin holder 29 is transported by the circulation conveyor 30 to the front position of the pipe insertion device 51 together with the circulation pallet 31, and the remaining pipes including the pipe insertion holes 23 and the like after the stack pins 28 have been pulled out by the pipe insertion device 51. The pipe 57 is inserted into the pipe insertion hole 23 in the same manner as described above to form a fin device into which the pipe has been inserted. This fin device is completed by expanding the pipe by the expanding device as described above. The stack pin holder 29 that has been emptied by removing the fin device is conveyed on the circulation conveyor 30 while riding on the circulation pallet 31 as described above (stack pins are inserted again halfway), and C
At the position, the material is transferred from the circulating pallet 31 to the collecting pallet 27 in the circulation path 26 by the transfer device.

Next, the stack pin extracting / inserting device 54 will be described. The stack pin pull-out / insertion device 54 is located on the front side of the pipe insertion devices 50 and 51, and is provided one each for the forward and backward routes of the circulation conveyor 30. FIG. 20 shows the details. In the figure, 30A is the outward path of the circulation conveyor 30, and the pipe insertion device 50,
I am running on the front side of 51. Reference numeral 30B denotes a return path of the circulation conveyor 30, which is arranged side by side at predetermined intervals in parallel with the outward path 30A. 150 is a drawing cylinder,
The rod 151 is disposed downward on the base, and is driven so that the rod 151 expands and contracts in the vertical direction. A movable plate 153, which is guided by a guide 152 (FIG. 21) and is vertically movable, is connected to the distal end of the rod 151. The movable plate 153 is a cylinder in which a rod 154 expands and contracts in a direction orthogonal to the rod 151. 155 are attached. A mounting plate 156 is attached to the tip of the rod 154, and two chuck devices 157 are mounted on the mounting plate 156 to
The two stack pins 28 in one row of No. 4 can be gripped. Reference numeral 160 denotes a fin pressing device, which is provided below the chuck device 157. The fin holding device 160 has a movable plate 162 that is moved up and down by a cylinder 161.
A cylinder 163 fixed to the cylinder 62, and an inverted L-shaped holding plate 164 provided at a rod end of the cylinder 163 are provided. The pressing plate 164 presses the fin 24 from above.

Next, reference numeral 166 denotes a rail 1 provided on the base.
A transport cylinder movably provided between the forward path 30A and the return path 30B along the direction 67.
Is provided so as to be able to advance and retreat in the vertical direction, and a mounting plate 169 is fixed to the lower end of the rod 168. Reference numeral 165 denotes a motor for driving the transport cylinder 166. An advancing / retracting plate 171 that is moved forward / backward by a cylinder 170 is attached to the mounting plate 169, and two chuck devices 173 corresponding to the two chuck devices 157 are attached to the upper front side of the advancing / retracting plate 171. Have been. Further, the moving plate 171
A cylinder 174 (FIGS. 22 and 23) is attached to the center of the front side of the cylinder. A movable plate 176 is attached to the lower end of a rod 175 of the cylinder 174. The movable plate 176 is vertically moved by driving the cylinder 174. It is designed to be driven. 177 is a guide pole at that time. The chuck device 173 on the front side of the movable plate 176
Two chuck devices 178 are provided at positions corresponding to the lower side of the table.

Next, reference numeral 180 denotes an insertion device, which is used when the transfer cylinder 166 is positioned on the return path 30B.
66 is provided at a position corresponding to the lower side. Plug-in device 1
As shown in FIGS. 24 and 25, 80 has a movable plate 182 that is moved up and down by a motor 181. 183 is a screw rod at that time, and 184 is a guide rail. Movable plate 182
A reciprocating plate 186 that is driven in the front-rear direction by a cylinder 185 is attached to. The chuck device 1 on the side of the transfer cylinder 166 is provided on the upper part of the front surface of the moving plate 186.
Two chuck devices 188 are attached corresponding to 78, and two chuck devices 189 are attached below the chuck devices 188 at intervals.

Next, the operation of pulling out / inserting the stack pins will be described. The withdrawal of the stack pin 28 is performed after the pipe 57 is inserted into the pipe insertion hole of the fin 24 as described above. This is because after the pipe is inserted, the pipe supports the fins 24 instead of the stack pins. As described above, the stack pin 28 is inserted by inserting the pipe 57, pulling out the stack pin 28 and removing the stack pin 28 from the stack pin holder 29 after being removed from the stack pin holder 29 as a fin device. It is inserted into the insertion hole 32. First,
The operation of pulling out the stack pin 28 from the fin device after pipe insertion and then inserting the stack pin 28 into the empty stack pin holder 29 will be described. First,
The fin 24 is pressed and held by the fin pressing device 160 from above. That is, the cylinder 163 is driven to move forward until the holding plate 164 is positioned above the fin 24, and then the fin 24 is pressed by being lowered by the cylinder 161. Next, the rod of the pull-out cylinder 150 is lowered, the cylinder 155 is driven, the chuck device 157 is advanced, and the chuck device 157 is driven at the advanced position to grip the stack pin 28. And the rod 151
Is raised, and the stack pin 28 is raised. When the stack pin 28 is raised to a predetermined position,
50 is stopped.

Next, the transfer cylinder 166 is at the position indicated by the solid line in FIG. 20, and when the cylinder 170 is driven, the chuck devices 173 and 178 advance, and the chuck device 173 is driven at the advanced position to grip the stack pin 28. . When the grip of the chuck device 157 is released, the stack pins 28 are transferred to the transport cylinder 166 side. In this state, the motor 165 is driven, and the transport cylinder 166 moves from the position above the forward path 30A to the position above the return path 30B. During this movement, the cylinder 174 is driven, and the chuck device 178 is lowered by a predetermined distance.
Will grip the middle part of the stack pin 28. This prevents the stack pins 28 from swaying and the stack pins 28 are transported above the return path 30B. Next, the transport cylinder 166 is driven to lower the stack pin 28. The transfer cylinder 166 is stopped at the predetermined lowering position,
Next, the cylinder 185 of the insertion device 180 is driven to move the chuck devices 188 and 189 forward, gripping the stack pin 28 in the advanced position, while holding the chuck devices 173 and 178.
Is released, the stack pin 28 is transferred to the insertion device 180 side. Here, the motor 181 is driven, and the chuck devices 188 and 189 descend while holding the stack pin 28, whereby the stack pin 2
8 is inserted into a predetermined stack pin insertion hole 32 of the stack pin holder 29.

FIG. 26 shows a procedure for pulling out and inserting the stack pin 28. The position O is a first withdrawal position corresponding to the pipe insertion device 50, the position P is a second withdrawal position corresponding to the pipe insertion device 51, and the position Q is a first withdrawal position on the return path 30B facing the second withdrawal position P. Is a second insertion position on the return path 30B opposite to the first extraction position O.
At the first withdrawal position O, the outer row of stack pins 28 is withdrawn, and the withdrawn stack pins 28 are transported by the transport cylinder 166 to a position above the second insertion position R and wait. At the second withdrawal position P, the stack pins 28 in the inner row are withdrawn and the transfer cylinder 16
6 and inserted into the stack pin insertion hole 32 of the inner row of the stack pin holder 29 by the insertion device 180 as described above. Stack pin holder 2 with stack pins 28 inserted in this inner row
9 is transported to the second insertion position R, where the standby transport cylinder 166 is driven, and further, the insertion device 180 is driven, so that the stack pins 28 are stacked in the outer row of the stack pin holder 29. It is inserted into the insertion hole 32. In this case, since the chuck devices 188, 189, etc. are located outside the previously inserted stack pin 28, they do not cause a spatial obstacle to the previously inserted stack pin 28, and the second difference from the outside. The remaining stack pins 28 can be inserted at the insertion position R. The stack pin 28 pulled out by the pull-out cylinder 150 as described above is received by the transfer cylinder 166, and is further inserted into the insertion device 180.
The stack pin 28 is inserted and received, so that the deflection of the stack pin 28 can be prevented and the positioning can be reliably performed, so that the stack pin 28 can be easily pulled out and inserted.
You.

Although the present invention has been described in detail with reference to the preferred embodiments, the present invention is not limited to these embodiments, and many modifications may be made without departing from the spirit of the invention. Of course.

[0035]

According to the present invention, a stack pin holder in which a stack pin is inserted and a large number of fins are stacked and held is transported on the outward path, and a pipe is inserted from above into a pipe insertion hole of the fin by a pipe insertion device. Inserted. The stack pins are pulled out of the fin device into which the pipe is inserted by the stack pin pull-out / insertion device, and are conveyed on the corresponding return path.The stack pins are inserted into the stack pin insertion holes of the stack pin holder from which the fin devices have been removed. Is inserted. Since the pipe is inserted into the pipe insertion hole of the fin from above, the stack pin can be stood upright and the stack pin holder can be transported, and therefore, during the transport process of the stack pin holder, The extracted stack pin can be easily inserted into the stack pin insertion hole of the stack pin holder on the corresponding return path, and automation of pipe insertion becomes easy.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a heat exchanger assembly line.

FIG. 2 is an explanatory diagram of a fin.

FIG. 3 is an explanatory view of a stacking pallet and a stack pin holder.

FIG. 4 is a front view of the pipe insertion device.

FIG. 5 is a side view of the pipe insertion device.

FIG. 6 is a plan view of the pipe insertion device.

FIG. 7 is a partial side view of the press-in die device.

FIG. 8 is a partial front view of the press-in die device.

FIG. 9 is an explanatory diagram of a position adjusting unit of the press-in die device.

FIG. 10 is a partial front view of the press-in die device.

FIG. 11 is an explanatory view of a shooter (supporting portion) portion.

FIG. 12 is a partial sectional view of a guide unit.

FIG. 13 is a partial front view of a guide unit.

FIG. 14 is an explanatory diagram of a guide hole of a regulation guide member.

FIG. 15 is an explanatory diagram of a regulating member.

FIG. 16 is a partial front view of a regulating unit.

FIG. 17 is a partial plan view of a regulating unit.

FIG. 18 is a front view of a circulation pallet and a stack pin holder.

FIG. 19 is a partially cutaway explanatory view of a transfer device (transfer device).

FIG. 20 is a front view of the pull-out / insertion device.

FIG. 21 is a partial explanatory view of a pull-out / insertion device.

FIG. 22 is a partial explanatory view of a pull-out / insertion device.

FIG. 23 is a partial explanatory view of a pull-out / insertion device.

FIG. 24 is a front view of the insertion device.

FIG. 25 is a plan view of the insertion device.

FIG. 26 is an explanatory diagram of a pull-out / insertion procedure.

FIG. 27 is an explanatory diagram of a pull-out / insertion procedure.

FIG. 28 is an explanatory diagram of a heat exchanger (fin device).

FIG. 29 is an explanatory diagram showing a state in which fins are stacked.

FIG. 30 is an explanatory diagram showing a conventional pipe insertion method.

[Explanation of symbols]

 23 Pipe insertion hole 24 Fin 25 Transfer device 26 Circulation path 27 Stacking pallet 28 Stack pin 29 Stack pin holder 30 Circulation conveyor (transfer path) 31 Circulation pallet 32 Stack pin insertion hole 50 Pipe insertion device 54 Stack pin pull-out / insert Apparatus 57 Pipe 66 Shooter (supporting part) 70 Pipe supply part 72 Pipe pushing part 74 Guide part 75 Vertical moving plate 80 Front and rear moving plate 84 Pushing die device 87 Pushing die 105 Chuck 120 Support plate 125 Regulatory guide member 126 Guide hole 136 Regulatory member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-136243 (JP, A) JP-A-56-114439 (JP, A) JP-A-59-215227 (JP, A) JP-A 61-136 216824 (JP, A) JP-A-4-200830 (JP, A) JP-A-4-354631 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21D 53/08 B23P 21 / 00 301 B23P 15/26 F28F 1/32

Claims (2)

(57) [Claims] 1. A pipe bent in a U-shape from above into a pipe insertion hole of a plurality of fins stacked on a stack pin holder, through which stack pins vertically set on the stack pin holder are inserted. In a stack pin pull-out / insertion device into the stack pin holder in a heat exchanger assembling apparatus having a pipe insertion portion to be inserted, the stack pin is planted and a stack pin holder in which a large number of fins are stacked is connected to the pipe. A forward path for transporting the stack pin holder that is transported via the push-in section, and a stack pin holder that is arranged in parallel with the forward path and has been emptied by removing a fin device into which a pipe has been inserted on the forward path. A return path to be conveyed, and disposed over the forward path and the return path, and after a pipe is inserted in the forward path, the stack pin holder Pulling out the stack pin from the stack pin holder located on the return path, inserting the stack pin into the stack pin insertion hole of the stack pin holder, and extracting and inserting the stack pin into the stack pin holder.
Plug-in device. 2. A stack pin stood vertically in a stack pin holder is inserted through the stack pin holder and bent in a U-shape from above into a plurality of fin pipe insertion holes stacked in two rows on the stack pin holder. A stack pin pull-out / insertion device into the stack pin holder in a heat exchanger assembling device having a pipe insertion portion for inserting a pipe, wherein the stack pins are planted in two rows, and a large number of fins are provided in two rows. An outward path for transporting the stacked pin holders via the pipe insertion section and a fin device which is arranged in parallel with the outward path and in which the pipe is inserted on the outward path are removed. Return path for transporting the empty stack pin holder, and stacks in the outer row of the stack pin holder after the pipe is inserted in the outward path. A first withdrawal position for withdrawing the pins, a second withdrawal position located on the outward path downstream of the first withdrawal position and withdrawing the stack pins in the inner row of the stack pin holder, and a return path facing the second withdrawal position A first insertion position for inserting the stack pin pulled out at the second pulling-out position into a stack pin insertion hole in an inner row of the empty stack pin holder conveyed on the return path; A stack pin inserted in a corresponding outer row of the stack pin holder is located at a position on the return path downstream of the insertion position and opposed to the first extraction position, and the stack pin extracted at the first extraction position is located in the corresponding outer row. A second insertion position to be inserted into the first insertion position; and a straddle provided between the first extraction position and the second insertion position. At the first extraction position, the stack pin outside the stack pin holder is extracted. The stack pins pulled out before the stack pin holder was conveyed to the second insertion position were conveyed to above the second insertion position, and the stack pins in the inner row were inserted at the first insertion position. A pull-out / insertion device that inserts the stack pin into a stack pin insertion hole in an outer row of the stack pin holder when the stack pin holder is transported, and between the second pull-out position and the first insertion position. The stack provided straddling, pulling out the stack pin inside the stack pin holder at the second pulling position, transporting the stack pin pulled out to the first insertion position side, and transporting the stack pin to the first insertion position Insert the stack pins into the stack pin insertion holes in the corresponding inner row of the pin holder.
A stack pin pull-out / insertion device for a stack pin holder, comprising: an insertion device.