WO2018179084A1

WO2018179084A1 - Fin stack device

Info

Publication number: WO2018179084A1
Application number: PCT/JP2017/012624
Authority: WO
Inventors: 洵一小野
Original assignee: 三菱電機株式会社
Priority date: 2017-03-28
Filing date: 2017-03-28
Publication date: 2018-10-04
Also published as: JP6647450B2; JPWO2018179084A1; CN208840385U

Abstract

This fin stack device is provided with a stack pin to be inserted into a stack hole formed in a fin which is conveyed transversely and then cut and dropped. The stack pin has a body part having an outer shape that conforms to the inner circumferential surface of the stack hole. The body part has an escape surface that is formed from a flat surface orthogonal to the conveyance direction and extending in the axial direction of the stack pin.

Description

Fin stack device

The present invention relates to a fin stack device provided with stack pins.

2. Description of the Related Art Conventionally, a fin stack device used in a fin manufacturing apparatus that manufactures fins for heat exchangers includes a pedestal, a stack pin standing through the pedestal, and a mechanism for moving the stack pin up and down (for example, a patent) Reference 1). In the fin stack device of Patent Document 1, when the fins are conveyed from the press machine to the fin stack device in a horizontal posture, the stack pins are moved upward and inserted into the stack holes formed in the fins. Is cut into product width. The cut fins are guided by the stack pins and fall onto the pedestal, and then the stack pins are moved downward. When the next fin is conveyed from the press machine, the operation of moving the stack pin upward again is repeated, and the fin is stacked and held on the pedestal.

JP 2014-73510 A

In the fin stack device of Patent Document 1, the stack pin is moved up and down, but the position of the stack pin is fixed, and the fin cut to the product width is dropped toward the stack pin by its own weight, and the fin is stacked and held. There is also a fin stack device. In this type of fin stack device, for example, if the fin is low-rigid or long, the fin positioned by the stack pin is deformed from a horizontal posture while being dropped by being guided by the stack pin. There is. When the fin is deformed, there is a problem of being caught on the stack pin in the middle of dropping.

The present invention has been made to solve the above-described problems, and provides a fin stack device capable of preventing a fin from being caught on a stack pin during the fall while positioning the fin with the stack pin. The purpose is to obtain.

The fin stack device according to the present invention is a fin stack device including stack pins inserted into stack holes formed in fins that are cut and dropped after being transported in the horizontal direction, A main body portion having an outer shape along the inner peripheral surface of the hole is provided, and the main body portion has a relief surface constituted by a plane orthogonal to the transport direction and extending in the axial direction of the stack pin.

According to the present invention, by providing the stack pin with a main body portion having an outer shape along the inner peripheral surface of the stack hole, it is possible to position the fins while providing a relief surface on the main body portion. It is possible to prevent the fin from being caught by the stack pin during the fall.

It is a front view which shows the schematic whole structure of the fin stack apparatus which concerns on Embodiment 1 of this invention. It is a fin for circular pipes which are the work of the fin stack device concerning Embodiment 1 of the present invention, and is a top view of the fin which a stack hole conveys in a zigzag form. FIG. 3 is a plan view of a fin for a circular tube that is a work of the fin stack device according to the first embodiment of the present invention, and the stack holes are transported side by side in a transport direction and a direction orthogonal to the transport direction. . It is a fin for circular pipes which are works of the fin stack device concerning Embodiment 1 of the present invention, and is a top view of a fin conveyed along with a conveyance direction. It is a fin for flat tubes which is a workpiece | work of the fin stack apparatus which concerns on Embodiment 1 of this invention, Comprising: It is a top view of the fin conveyed along with the direction orthogonal to a conveyance direction. It is a fin for flat tubes which are the workpiece | work of the fin stack apparatus which concerns on Embodiment 1 of this invention, Comprising: It is a top view of the fin conveyed along with a conveyance direction. It is the elements on larger scale at the time of apparatus operation | movement of the fin stack apparatus concerning Embodiment 1 of this invention. It is a perspective view of the stack pin of the fin stack apparatus concerning Embodiment 1 of the present invention. It is a figure which shows the stack pin of FIG. FIG. 10 is a sectional view taken along line AA in FIG. It is a figure which shows the state which the fin deform | transformed into the arch shape is hooked on the stack pin of a comparative example. It is a figure which shows the state in which the slanting fin is hooked on the stack pin of a comparative example. It is a flowchart which shows the flow of operation | movement of the fin stack apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the state in which a elongate fin is hooked on the stack pin of the comparative example.

Embodiment 1 FIG.
1 is a front view showing a schematic overall configuration of a fin stack device according to Embodiment 1 of the present invention.
The main body 1 of the fin stack device includes a suction plate 2. The suction plate 2 operates the blower 5 positioned above it to bring the suction BOX 4 into a negative pressure state, thereby applying an adsorption force to the lower surface side of the suction plate 2. The suction force by the blower 5 acts on the entire lower surface of the suction plate 2 by the suction BOX 4. Further, the suction BOX 4 is provided with a damper 3 for releasing to the atmosphere, and the suction force is released by opening the damper 3.

The fin 7 that has been subjected to a predetermined pressing process by the pressing machine 6 is fed in a horizontal direction and a predetermined length in a horizontal position to the lower side of the suction plate 2 by a feeding device (not shown). A groove extending in the conveying direction (right direction in FIG. 1) is formed on the lower surface of the suction plate 2 in accordance with the outer shape of the fin 7, and the suction conveyance is performed with the fin 7 being fitted and positioned in the groove. Is done.

A carriage 8 is disposed below the suction plate 2, and a plurality of stack pins 9 are erected on the upper surface of the carriage 8. And the fin 7 sent out by the predetermined length from the press machine 6 is cut | disconnected by the cut-off part 12 to a product width (length of a conveyance direction), and the damper 3 is opened simultaneously, and adsorption | suction force is cancelled | released. By that, it falls.

Here, the fins 7 that are transported from the press machine 6 to the fin stack device and cut into the product outline by the press machine 6 will be described. 2 to 4 are plan views of fins for circular pipes, which are works of the fin stack device according to the first embodiment of the present invention. 5 and 6 are plan views of flat tube fins that are workpieces of the fin stack device according to the first embodiment of the present invention. In FIGS. 2 to 6, the arrows indicate the conveyance direction of the fins. Hereinafter, first, the fin for the circular tube will be described, and then the fin for the flat tube will be described.

The circular tube fins 7 shown in FIGS. 2 to 4 are formed with a plurality of holes 14 into which the circular tubes are inserted, and some of the plurality of holes 14 are inserted with the stack pins 9. The stack hole 14 becomes. 2 to 4 show a state in which a plurality of fins 7 are arranged in a direction orthogonal to the transport direction. In addition, the fin 7 sent out to the fin stack apparatus from the press machine 6 has already been divided | segmented into the direction orthogonal to a conveyance direction. In FIG. 2, the holes 14 are arranged in a staggered manner, and in FIG. 3, the holes 14 are aligned in the transport direction and the direction orthogonal to the transport direction. 4 is the same as FIG. 3 in that the holes 14 are aligned in the transport direction and the direction orthogonal to the transport direction, but the arrangement direction of the fins 7 with respect to the transport direction is the same as in FIGS. Differently, the fins 7 are arranged in the transport direction.

5 and 6, a plurality of notches 16 into which the flat tube is inserted are formed. 5 shows a state in which a plurality of fins 7 are arranged in a direction orthogonal to the transport direction, and FIG. 6 shows a state in which the plurality of fins 7 are arranged in the transport direction. 5 and 6, a stack hole 14 into which the stack pin 9 is inserted is formed in addition to the notch 16.

As shown in FIGS. 2 to 6, the fin 7 sent from the press machine 6 to the fin stack device may be for a circular tube or a flat tube, and the arrangement direction of the fins 7 is arbitrary. . The fin 7 is formed with an annular fin collar (not shown) that rises vertically from the periphery of the hole 14.

Returning to the description of FIG. Moreover, FIG. 7 is the elements on larger scale at the time of apparatus operation | movement of the fin stack apparatus concerning Embodiment 1 of this invention.
The fins 7 sucked and held on the suction plate 2 fall when the damper 3 is opened. At this time, as shown in FIG. 7, the stack pins 9 are inserted into the stack holes 14 and the fins 7 are guided downward as indicated by the arrows in FIG. 7 and dropped. While the fins 7 are guided by the stack pins 9 and dropped, an elevator 13 is installed as shown in FIG. 1, and the fins 7 land on the elevator 13.

A plurality of fins 7 are stacked on the elevator 13 by the fins 7 being intermittently repeatedly sent from the press machine 6 every cycle and cut by the cut-off part 12. Then, after a predetermined number of sheets are stacked, the elevator 13 is lowered to a predetermined position. The above operation is repeated.

The first embodiment is characterized by the shape of the stack pin 9. Hereinafter, the shape of the stack pin 9 will be described.

FIG. 8 is a perspective view of the stack pin of the fin stack device according to the first embodiment of the present invention. 9A and 9B are diagrams showing the stack pin of FIG. 8, in which FIG. 9A is a front view seen from a direction orthogonal to the transport direction, FIG. 9B is a side view seen from the transport direction, and FIG. . FIG. 10 is a cross-sectional view taken along the line AA in FIG.
The stack pin 9 has an upper end portion 9A and a main body portion 9B provided below the front end portion 9A. The distal end portion 9A has a cylindrical small diameter portion 9a and a reduced diameter portion 9b that is reduced in diameter from the small diameter portion 9a toward the distal end. The main body portion 9B has a substantially cylindrical large-diameter portion 9c having an outer shape that is larger in diameter than the small-diameter portion 9a and along the inner peripheral surface of the stack hole 14, and a connecting portion that connects the large-diameter portion 9c and the small-diameter portion 9a. 9d. The columnar shape along the inner peripheral surface of the stack hole 14 can be said to be a columnar shape having a slightly smaller diameter than the inner diameter of the stack hole 14.

More specifically, the large-diameter portion 9 c has a pair of arcuate surfaces 10 that face in the direction orthogonal to the transport direction and extend in the axial direction of the stack pins 9. The pair of arcuate surfaces 10 are arcuate surfaces corresponding to a circle (a circle indicated by a dotted line in FIG. 10) having a larger diameter than the small-diameter portion 9a and along the inner diameter of the stack hole 14, and will be described later as positioning portions. Function.

Further, of the outer surfaces of the main body portion 9B, the outer surfaces facing each other in the transport direction are a pair of flat surfaces 11 that are orthogonal to the transport direction and extend in the axial direction of the stack pins 9. The pair of flat surfaces 11 are located inside the circle 15, and the main body portion 9 </ b> B has a shape in which a portion where the fin 7 is caught is cut out. And a pair of plane 11 functions as a relief surface for avoiding being caught when the fin 7 is guided to the stack pin 9 and falls. Hereinafter, the pair of flat surfaces 11 is referred to as a pair of relief surfaces 11. The pair of relief surfaces 11 are desirably provided in the entire drop range in which the fins 7 are guided by the stack pins 9 and dropped in the main body portion 9B.

Further, the distance W1 in the transport direction between the pair of relief surfaces 11 is substantially the same as the diameter W0 of the small diameter portion 9a of the tip portion 9A. The width W <b> 2 in the direction perpendicular to the conveying direction of the relief surface 11 is slightly smaller than the diameter of the stack hole 14.

Next, the operation of the stack pin 9 configured as described above will be described. In order to explain the operation of the stack pin 9 more clearly, it will be described as a comparative example in comparison with a stack pin 20 shown in FIGS. 11 and 12 described later.

The stack pin 20 of the comparative example is different from the stack pin 9 in that the escape surface 11 is not provided in the stack pin 9 of the first embodiment, and the large-diameter portion 20a is configured in a complete columnar shape. In the stack pin 20 of the comparative example configured as described above, the falling fin 7 and a catch as described below occur.

FIG. 11 is a diagram illustrating a state where fins deformed in an arch shape are caught on the stack pins of the comparative example. FIG. 12 is a diagram illustrating a state in which a slanted fin is hooked on the stack pin of the comparative example.
In the case of the low-rigid fin 7, while the fin 7 is being guided by the stack pin 20 and falling, the central portion in the transport direction may fall while being deformed downward in a convex arch shape as shown in FIG. 11. In this case, the stack hole 14 is inclined by the deformation of the fin 7 and is caught by the stack pin 20. The deformation of the caught fin 7 causes the stack pin 20 to be pulled inward as shown in FIG. The tip position deviates from the original normal position.

Also, as shown in FIG. 12, the fin 7 may be guided and dropped by the stack pin 20 in an inclined posture instead of a horizontal posture. Also in this case, the fins 7 are caught by the stack pins 20 and the adjacent stack pins 20 are inclined in the same direction. In this case, the tip position of the stack pins 20 is shifted from the original normal position.

As described above, when the tip position of the stack pin 20 is deviated from the normal position, the position of the fin 7 that falls next is not aligned with the stack hole 14 and a stack mistake occurs.

Next, the behavior when the fin is dropped when the stack pin 9 of the first embodiment is used will be described with reference to FIGS.
The stack pin 9 according to the first embodiment is provided with a pair of relief surfaces 11 so that the length of the large-diameter portion 9c in the transport direction is shorter than the stack pin 20 of the comparative example. The surface 11 is a flat surface that is flat in the falling direction of the fins 7. For this reason, even if the fin 7 is deformed into an arch shape as shown in FIG. 11, the fin 7 can be dropped without being caught by the stack pin 9. Further, even if the fin 7 falls in an inclined posture as shown in FIG. 11, the fin 7 can be dropped without being caught by the stack pin 9 by the escape surface 11. Therefore, the fins 7 can be stacked without being caught in the middle of the stack pins 9.

Further, since the pair of arcuate surfaces 10 of the large-diameter portion 9c of the stack pin 9 is an arc surface along the inner peripheral surface of the stack hole 14, when the large-diameter portion 9c is positioned in the stack hole 14, The circular arc surface 10 functions as a positioning portion. As a result, the fins 7 can be stacked in an aligned state without causing positional deviation.

FIG. 13 is a flowchart showing an operation flow of the fin stack device according to the first embodiment of the present invention. The operation of the heat exchanger fin stack device will be described below with reference to FIG.
First, the blower 5 starts siphoning (step S1). Next, the press machine 6 is activated (step S2), and after the press work is performed, the fins 7 are sent out (step S3). The fed fins 7 are attracted to the lower surface of the suction plate 2 and conveyed by a predetermined length in the attracted state (step S4). And if it sends out predetermined length, it will cut | disconnect by the cutoff part 12 (step S5). Almost simultaneously with the cutting, the suction plate 2 descends in the vertical direction (step S6). Immediately after the descent, the damper 3 is opened, the inside of the suction box 4 is released to the atmosphere, the pressure inside the suction box 4 is restored, and the suction force generated on the suction plate 2 is released (step S7). The fin 7 is dropped by the release of the suction force (step S8), while the suction plate 2 is raised (step S9).

When the fin 7 falls, the stack pin 9 is inserted into the stack hole 14 shown in FIG. 2 and guided downward (step S10). Here, even if the fin 7 is deformed in the middle of falling along the stack pin 9, it falls without being caught by the stack pin 9 as described above, and lands on the elevator 13 located on the upper side of the stack pin 9 ( Step S11). Therefore, the tip position of the stack pin 9 does not deviate from the normal position, and the stacking error of the fin 7 that falls next can be avoided.

The processes of steps S1 to S11 are repeated, and the fins 7 are sequentially stacked on the elevator 13. At this time, the height position of the uppermost surface of the fin 7 laminated on the elevator 13 is detected by a sensor (not shown) (step S12), and the elevator 13 keeps the height position at a constant position. Descends (step S13). This operation is repeated and the stack proceeds.

As described above, according to the first embodiment, since the pair of relief surfaces 11 are provided on the stack pin 9, it is possible to prevent the fin 7 from being caught in the middle of falling along the stack pin 9. For this reason, the fins 7 that fall sequentially can be stacked with good alignment without delay.

In addition, in this Embodiment 1, although it was set as the structure provided with the one escape surface 11, if it is at least one, it is effective in prevention of the fin 7 catching. In addition, when the escape surface 11 is made into one, the other surface of the large diameter part 9c should just be comprised by the circular arc surface which connected a pair of circular arc surface 10. FIG. Also in this case, the positioning effect of the fins 7 can be obtained.

Since the relief surface 11 is provided in the entire fall range where the fin 7 is guided by the stack pin 9 and falls in the main body portion 9B, it can be prevented from being caught stably compared to a case where it is provided in a partial range.

The tip portion 9A has a cylindrical shape, and the diameter W0 of the tip portion 9A is the same as the distance in the transport direction between the pair of relief surfaces 11, so that the fin 7 is also caught at the joint between the tip portion 9A and the main body portion 9B. It can be dropped without

Further, the width of the pair of relief surfaces 11 in the direction orthogonal to the respective conveyance directions is larger than the distance of the pair of relief surfaces 11 in the conveyance direction. For this reason, the fin 7 can be dropped without being caught on the escape surface 11 while positioning the fin 7 on the arc surface 10 orthogonal to the conveying direction.

FIG. 14 is a diagram illustrating a state in which a long fin is hooked on the stack pin of the comparative example.
FIG. 14 shows a long fin 7a having a long length in the longitudinal direction. Since the fins 7a have a low rigidity as they become long, the stack pin 20 of the comparative example is easily deformed as shown in FIG.

In the case of the fins 7a having lower rigidity as described above, in the first embodiment, the number of stack pins 9 per one fin 7a is increased by the increase in the length of the fins 7a. Thereby, the deformation | transformation and bending of the fin 7a can be suppressed. As a result, stack mistakes can be prevented. Here, the stack pin 9 can correspond to fins of any length and rigidity by using the stack pin 9 provided with the relief surface 11 as described above.

Also, the rigidity is reduced when the fin is thin, but in this case as well, by increasing the number of stack pins 9, deformation and bending of the fin 7a can be suppressed, and a stack mistake can be prevented. In FIG. 14, fins whose longitudinal direction is the transport direction are shown. However, in the case of fins whose longitudinal direction is orthogonal to the transport direction, the number of stack pins 9 per fin is increased similarly. do it.

1 body, 2 suction plates, 3 dampers, 4 suction boxes, 5 blowers, 6 presses, 7 fins, 7a fins, 8 carts, 9 stack pins, 9A tip, 9B body, 9a small diameter part, 9b reduced diameter part 9c large diameter part, 9d connecting part, 10 arc surface, 11 relief surface, 12 cut-off part, 13 elevator, 14 stack hole, 15 yen, 16 notch, 20 stack pin, 20a large diameter part.

Claims

A fin stack device comprising stack pins inserted into stack holes formed in fins that are cut and dropped after being transported in the horizontal direction,
The stack pin includes a main body portion having an outer shape along the inner peripheral surface of the stack hole,
The main body portion is a fin stack device having a relief surface formed of a plane orthogonal to the transport direction and extending in the axial direction of the stack pins.
2. The fin stack device according to claim 1, wherein the relief surface is provided in an entire drop range where the fin is guided by the stack pin and dropped in the main body.
The fin stack device according to claim 1 or 2, wherein the stack pin includes a pair of relief surfaces facing the transport direction.
The fin stack device according to claim 3, wherein the stack pin has a cylindrical tip portion above the main body portion, and a diameter of the tip portion is the same as a distance in the transport direction between the pair of relief surfaces. .
The fin stack device according to claim 3 or 4, wherein a width of each of the pair of relief surfaces in a direction perpendicular to the conveyance direction is larger than a distance of the pair of relief surfaces in the conveyance direction.