JPH078462B2 - Heat exchanger core automatic assembly equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger core automatic assembling apparatus for assembling a core portion of a heat exchanger such as a condenser for a car cooler and a radiator.

2. Description of the Related Art Generally, assembling of a heat exchanger core is performed by arranging tubes in parallel at a predetermined interval and then inserting fins into the gap between the tubes.

Conventionally, as an apparatus for automatically assembling such a core, there is known an apparatus as shown in, for example, FIG. 10 (a) (b) and FIG. 11 (a) (b) (Japanese Patent Laid-Open No. 64-78731). No.

A device (51) shown in FIGS. 11 (a) and (b) holds a large number of tubes (52) in parallel at predetermined intervals and directs the tubes (52) forward, that is, in the parallel direction. A tube transfer device (53) for intermittent transfer and a fin (54) arranged above the tube transfer device (53) and sent by compressed air are received from one end of the opening, and the fin is transferred to the tube (52). A lower open fin housing part (55) for temporarily housing in parallel with the fin housing part, and the fin housing part (55)
And a tube transfer device (53), which are arranged so as to be intermittently transferable forward and have a hole (56) for receiving the fin (54) in a vertically penetrating state, and a hole. A position setting device (5) for setting the fin (54) fed into the (56) at a predetermined position in its longitudinal direction.
8) (59), a fin receiving plate (60) which is disposed adjacent to the lower surface of the slide block (57) and closes the hole (56) of the slide block (57) from below, and a fin receiving plate (60). The push-in plate (61) is disposed at the front position of the (60) and is vertically moved between the upper position of the slide block (57) and the position around the upper surface of the tube.

In this assembling apparatus (51), the fin (54) has the housing section (55).
When the slide block (57) is moved forward and the hole (56) is temporarily standing by at a position directly below the fin housing (55) in the state of being fed inside, the fins inside the housing (55) are (Five
4) falls into the hole (56) and is housed in the hole (56) with its lower surface supported by the fin receiving plate (60). Then, in this state, the slide block (57) moves forward, the position setting devices (58) (59) are activated during this transfer to set the position of the fins (54) in the longitudinal direction, and The fins (54) temporarily stand by in a position directly below the push-in plate (61). Then, in this standby state, the pushing plate (61) is moved downward, and the fins (54) are pushed and inserted into the gap between the tubes (52). After that, the tube transfer device (53) intermittently transfers the tubes (52) by one pitch, and the slide block (57) is also intermittently transferred forward, and the fin insertion operation similar to the above is continuously repeated.

Further, the assembling device (71) shown in Fig. 11 (a) and (b).
Is a tube transfer device (53) similar to the above, and is arranged above the tube transfer device (53) and receives a fin (54) sent by compressed air from one end of the tube (52). ), The upper and lower open fin housing parts (72) temporarily housed in parallel with each other and the lower surface of the fin housing part (72) are arranged adjacent to each other, and the lower surface of the housing part (72) is openably and closably closed. A fin receiving plate (73) projecting forward,
Position setting devices (74) (7) for setting the fins (54) housed in the fin housing (72) at predetermined positions in the longitudinal direction.
5) and a push-in plate (76) which is disposed above the fin housing (72) and is vertically moved between the upper position of the housing (72) and a position near the upper surface of the tube (52). It is composed of and.

In this assembly device (71), the fins (54) are fed into the accommodating part (72) with the lower opening of the accommodating part (72) closed by the fin receiving plate (73), and the position setting is performed in that state. The devices (74) (75) are activated to position the fins (54) in the longitudinal direction. Then, the lower part of the accommodating part (72) is opened by the retreating operation of the fin receiving plate (73), and in this state, the pushing plate (76) is moved down and the fin (54) is inside the gap between the tubes (52). Inserted in. After that, the tube transfer device (53) intermittently transfers the tubes (52) by one pitch, and the fin insertion operation is repeated, as in the above-described device.

Problems to be Solved by the Invention However, any of the above conventional devices (51, 71) has the following problems.

The first problem is that the structure of the device is complicated.

That is, the device (51) shown in FIG. 10 supports the fin (54) in the hole (56) of the slide block (57) from below, and the device (71) shown in FIG. Fin support plates (60) (73) are used to support the fins (54) in the portion (72), respectively.

The second problem is that during the transfer of the fins to the fin accommodating portions (55) (72) or the like, the fins may be caught and the fins may be clogged.

That is, in the above conventional devices (51) (71), the fins (54) are fed into the fin accommodating portions (55) (72) by the fins (5).
4) is fed from one end opening of the accommodating parts (55) (72), in which case the fins (54)
In the device (51) shown in the figure, the lower surface of the device is slid on the upper flat surface of the slide block (57),
In the device (71) shown in FIG. 11, the lower surface of the device (71) is slid on the upper flat surface of the fin receiving plate (73) to be fed into the fin housing parts (55) (72). .

Further, in the apparatus shown in FIG. 0, the fins (54) in the holes (56) of the slide block (57) are pushed in by sliding the lower surface of the fins on the upper flat surface of the fin receiving plate (60). It is supposed to be moved to a position directly below the plate (61).

That is, the fins (54) are transferred while making surface contact with the fin receiving plates (60) (73) and the slide block (57), and the contact area with them is large and the frictional resistance during sliding is large. It may become large and hinder the smooth transition of the fins (54).

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above conventional problems and to provide an automatic heat exchanger core assembling apparatus capable of simplifying the apparatus configuration and smoothly transferring the fins.

Means for Solving the Problems In the above object, the present invention relates to a tube transfer device for holding a plurality of tubes arranged in parallel at a predetermined interval and intermittently transferring the tubes in the parallel direction, and the tube transfer device. A fin accommodating portion which is arranged in a position parallel to the tube at an upper position of the device and which accommodates the fin in a mode in which a lower surface of the fin is supported by an upper edge portion of the tube; The fin feeding unit for feeding the fins in the accommodating unit and the pressing plate that enters the fin accommodating unit from above and inserts the fins between the tubes are provided, and the tube transfer device directs the tubes directly below the fin accommodating unit. The fins are fed from the fin feeding section into the fin accommodating section in a state of temporarily standing by, and the tube transfer device moves the fins in the fin accommodating section. The automatic heat exchanger core is characterized in that the pushing plate is controlled so as to push the fins between the tubes in a state where the gap between the fins is moved to immediately below the fin accommodating portion and is temporarily waiting. The main point is the assembly device.

In the above invention, there is provided a fin position setting device for setting the position of the fins fed into the fin accommodating portion in the longitudinal direction thereof, and the fin position setting device is arranged at the tip of the fin accommodating portion in the fin feeding direction. And a contact member for bringing the tip end of the fin into contact with the fin, and a pivoting operation of the abutting member into the accommodation part at the rear end side of the fin accommodation part to bring the rear end of the fin into contact with the abutment member. It is preferable to employ a rotary member that pushes so as to abut.

Further, in the above invention, both side walls of the fin housing are configured to be relatively close to and away from each other, and while the tube transfer device is operating so as to position the gap between the tubes immediately below the fin housing, etc. In the above, it is preferable that the fins in the fin housing are sandwiched between the side walls.

Operation In the above invention, the fins from the fin feeding unit slide into the fin housing unit by sliding the upper edge of the tube that is temporarily waiting immediately below the fin housing unit. Then, in the housed state, the tubes are transferred in the parallel direction, and the gap between the tubes temporarily stands by immediately below the fin housing portion. In that state, the pushing plate moves downward, and the fins are inserted and arranged between the tubes. After that, the tubes are transferred in the parallel direction and temporarily stand by immediately below the fin accommodating portion, and the same operation as described above is performed.

Examples Examples will be described below.

In the device of this embodiment, as shown in FIG. 1, a large number of flat tubes (2) are arranged in parallel between a pair of cylindrical headers (1) (1) arranged in parallel. The fins (3) are inserted between the tubes (2) in the state of so-called skeleton (A), which are passed over and are connected to both headers (1) (1) in a fitted state. Has been done.

In the heat exchanger core automatic assembling apparatus (4) shown in the figure, (6) is a tube transfer device, (7) is a fin accommodating portion, and (8) is a fin pushing plate.

The tube transfer device (6) comprises a pallet (10) for holding the tube (2) (that is, the skeleton (A)) and a pallet transfer device (not shown) for transferring the pallet (10) intermittently. As a whole, (2) is intermittently transferred forward in the parallel direction (direction of arrow in FIG. 1). The mode of this intermittent transfer will be described later.

The pallet (10) is formed in a rectangular plate shape having a predetermined plate thickness, and the upper surface of the pallet (10) engages with the outer peripheral surfaces of both headers (1) and (1) of the skeleton (A) at a plurality of positions in its length direction. Is provided with a skeleton fixing joint (11), and the header (1) (1) is engaged with the engaging portion (11) so that the skeleton (A) and the tube (2) are palletized (10). It is supposed to be held in a positioned state on the upper surface.

In addition, the pallet (10) is provided with a retractable tube pitch holding pin (13) that is properly arranged in each gap between the tubes (2) at two positions in the middle and left and right in the longitudinal direction thereof. It is lined up.

The tube pitte holding pin (13) is incorporated in the pallet (10) with the following configuration.

That is, as shown in FIG. 2, a lower open concave portion (14) is formed on the lower surface of the pallet (10) in the parallel direction of the tubes (2), that is, in the front-rear direction. An actuating plate (16) is disposed inside of which an axis (15) is oriented in the front-rear direction to rotate in a seesaw shape. Further, on one side (left side in the figure) of the actuating plate (16) in the width direction (horizontal direction in the figure),
Tube pitch holding pin arrangement holes (17) penetrating from the inside of the recess (14) to the upper surface of the pallet (10) are arranged in a row in the front-rear direction, and the other side (right side in the figure) has a front-rear direction. Actuating pin placement holes (18) are drilled at the locations, and tube pitch holding pins (13) and actuating pins (19) are placed in each hole.
Are slidably arranged. A bush (20) is arranged inside the hole (17) in which the tube pitch holding pin (13) is arranged.
3) cannot move down in the arrangement hole (17) due to its own weight.

With this configuration, when a worker inserts a rod-shaped tool into the operation pin arrangement hole (18) from above the pallet (10) and pushes down the operation pin (19), the operation plate (16) moves the shaft core (15). The tube pitch is rotated clockwise around the center of the drawing, whereby all the tube pitch holding pins (13) are pushed up, and the tips thereof are projected above the upper surface of the pallet (10). On the other hand, when one of the tube pitch holding pins (13) is pushed down, the operating plate (16) rotates in the opposite direction to the above,
The operating pin (19) is lifted within a range in which its tip does not project from the upper portion of the arrangement hole (18). In that state, the other tube pitch holding pin (17) is arranged in the ascending position at the hole (17).
It is held in the push (20) inside. Then, the pin (13) in the projecting state is lowered by the forced pressing force acting on the upper end portion thereof.

As described above, the tube pitch holding pin (13) is entirely advanced upward by pushing down the operation pin (19), while the tube pitch holding pin (13) is independently retracted into the hole (17).

It should be noted that the pin for holding the tube pitch by the operating pin (13)
The pushing up of does not have to be performed all at once, for example, by arranging a plurality of operating pins on one side,
A configuration may be employed in which all tube pitch holding pins (13) are projected upward from the upper surface of the pallet (10) by sequentially pushing down each pin.

Although not shown, the pallet transfer device is a pallet (1
0) Place the pallet (10) in the state where the tube (2) held above is positioned directly below the fin accommodating portion (7).
5 Move to the rear of the tube pitch and wait there temporarily,
After that, in a mode in which the operation of shifting to the front of the 1.5 tube pitch and then temporarily waiting there is repeated, the pallet (10) and eventually the tube (2) are intermittently transferred forward in the parallel direction as a whole. The pallet transfer device is capable of adjusting the moving distance of the pallet per tube pitch according to the size of the heat exchanger core to be assembled.

As shown in FIG. 1, the fin accommodating portion (7) is formed by the front and rear reference blocks (22) and the movable block (23) as an elongated upper and lower open chamber parallel to the tube (2). ing. The reference block (22) is fixedly arranged in a stationary state, and the movable block (23) is the reference block (22).
The fins (3) housed in the fin housing (7) are brought into and out of contact with each other by the movable block (23) approaching each other to be held between the blocks (22) (23). It is supposed to be retained.

In addition, one end of the fin accommodating portion (7) in the lengthwise direction (first
At the opening (right end in the figure), a tip end opening of a rectangular tubular fin idler portion (25) serving as a fin feeding portion is coaxially arranged, and the fin (3) is fed by the action of compressed air. It is supposed to be fed from the part (25) into the fin accommodating part (7). A slit (26) in the lengthwise direction is formed in the central portion in the upper surface width direction of the fin idling unit (25), and a rotating arm (30) of a fin lengthwise position setting device (29) described next. Are allowed to enter the fin free-running section (25).

A fin lengthwise position setting device (29) is incorporated in the fin housing portion (7). The position setting device (29) includes a fin tip end abutting block (31) arranged at the tip (left end in FIG. 1) opening of the accommodating portion (7),
This is due to the rotation arm (30) which is pivotally supported and pivotally operated at one end at a position above the rear end portion side (right side in FIG. 1) of the accommodating portion. The tip end of the rotating arm (30) passes through the upper slit (26) of the fin idling part (25) and enters the idling part (25), and further inside the fin accommodating part (7). The fins (3) sent to the fin housing (7) are pushed toward the rear ends of the fins (3) and stopped at a predetermined position. It is preferable that the contact block (31) be positionally adjustable in the lengthwise direction of the accommodating portion (7).

In this position setting device (29), the tip of the rotating arm (30) pushes the rear end of the fin (3) in the fin housing (7) toward the tip to stop it at a predetermined position. , The tip of the fin (3) is brought into contact with the contact block (31),
Therefore, the position of the fin (3) in the length direction is set and the length of the fin (3) is adjusted to a predetermined length.

Further, the operation of the rotating arm (30) is such that the fin moves immediately after the rear end of the fin (3) has passed the entry start position of the tip of the arm (30) into the air feed section (25). It is preferable that the tip of the arm (30) is controlled so as to enter into the idle runway (25) in a manner to follow the above. As a result, the fins (3) can be positioned in the longitudinal direction substantially at the same time as the fins (3) are accommodated in the accommodating portion (7), and the fin insertion cycle time can be reduced. it can.

The push-in plate (8) is arranged above the fin housing portion (7) so as to be movable up and down, and when it is lowered, the pushing plate (8) enters into the housing portion (7) and the fins housed therein. The fins (3) are pushed down into the gap between the tubes (2) by pushing down (3).

The control method of the device having the above configuration will be described together with the following description of the operation.

Next, the handling method and operation of the device will be described.

First, as a preparatory step, as shown in FIG. 1, the skeleton (A) is placed on the pallet (10) and the engaging portion (1) is
In 1), fix the skeleton (A) in the positioning state. Next, a rod-shaped tool is inserted into the operation pin placement hole (18) (see the arrow in FIG. 2), and the tube pitch holding pin (13) is placed in the state of advancing into the gap between the tubes (2) of the skeleton (A). . And, this pallet (10)
Attach to a pallet transfer device (not shown).

Then, the device is activated. Then, the tube (2) is located immediately below the fin accommodating portion (7), and the fin idling portion (2)
The fins (3) are sent into the fin housing (7) from 5). In Fig. 3 (a) and (b), the fins (3) are fed into the fin accommodating part (7) from the fin idling part (25) after inserting the fins (3) a plurality of times after starting the device. Shows the state of the way in. In this state, as shown in the figure, the tube (2) is positioned in the standby state immediately below the accommodating portion (7), and the fins (3) slide on the upper edge of the tube (2). As a result, it is fed into the accommodation section (7).

It should be noted that, as shown in the figure, a tube (2) having no fins inserted on either side thereof, for example, a tube on which the fins (3) are to be inserted, immediately below the accommodating portion (7). Both tubes (2a) sandwiching the inter-insertion gap
One (2a) of (2b) is supposed to be located. This is because even if the width of the fin (3) is substantially the same as the width of the tube (2) as shown in FIG. This is so that the smooth feeding of can be achieved.
That is, when the tube (2b) in which the fins (3) are arranged adjacent to each other is positioned immediately below the accommodating portion (7) and the fins (3) are slid on this, the fins (3) already inserted It interferes with (3) and causes a catch, which hinders smooth feeding. When the width of the fin (3) is smaller than the width of the tube (2), the above consideration is not necessary.

In the state shown in FIG. 3, the movable block (23)
Is in a separated position with respect to the reference block (22), and the pushing plate (8) is in a standby state at an upper standby position.

Then, in a state before and after the rear end of the fin (3) leaves the idling section (25), as shown in FIG. Free-running section (25)
Then, the fins (3) move inward and move toward the inside of the accommodating portion (7) to push the rear end of the fin (3). Then, the tips of the fins (3) come into contact with the contact block (31), and the arm (30) stops rotating at a predetermined position, whereby the longitudinal position of the fin (3) is set.

Next, as shown in FIG. 5, the movable block (23) first moves closer to the reference block (22), and the fins (3) are held in a sandwiched state by both blocks (22) and (23). . The movable block (23) is automatically actuated when the sensor detects the housing state of the fins. Then, in that state, the pallet (10) is moved rearward by 0.5 tube pitch, and as shown in FIG. 6, the gap between the tubes (2) is positioned immediately below the fin accommodating portion (7), In that state, the transfer of the pallet (10) is temporarily stopped.

Then, as shown in FIG. 7, the pushing plate (8) is moved downward, the fins (3) in the accommodating part (7) are pushed into the gap between the tubes (2), and the fins are inserted. To be done. At the same time, the pin (13) for holding the tube pitch existing between the tubes (2) is pushed down by pushing in the fins (3). However, since the pin (13) is present in the gap between the uninserted tubes, the insertion gap may be narrowed even if the tube (2) is slightly curved outward after the fin is inserted due to the fin height. Absent. Further, the deformation appears on the side where the fins are already inserted, that is, on the left side in FIG. 7, and the non-insertion gap does not cause a displacement in the tube parallel direction. This also means that the tube to be transferred (2)
Allows the fins (3) to be fed into the accommodating part (7) in a stable state by temporarily holding the fins at an accurate position immediately below the fin accommodating part (7).

Then, as shown in FIG. 8, the pushing plate (8) is
The lower surface is lifted up to a height flush with the lower surface of the accommodating portion (7), and temporarily stands by at that position. That is, in this state, the tube-to-tube gap is still located immediately below the fin housing portion (7). Therefore, if the pushing plate (B) is raised and returned to the initial height position, the fin empty portion ( The next fin (3) may be fed into the accommodating part (7) from 25), causing a problem that the fin is fed over the intertube gap. In order to prevent this inconvenience, a pressing plate (8) is provided inside the accommodating portion (7) so that the fins are not fed into the accommodating portion (7).
As described above, the pushing-in plate (8) is prevented from erroneously feeding the fins into the accommodating portion (7), so that the device can be further simplified. it can.

Then, after that, the pallet (10) is advanced by 1.5 tube pitch, and the tube (2) is positioned immediately below the fin accommodating portion (7) as shown in FIG. In that state, the pushing plate (8) is returned to the initial height position, the movable block (23) is moved away from the reference block (22), and the fin accommodating portion (7) can receive the fins. It will be in a state.

After that, as shown in FIG. 3 again, the fins are sent from the idling section (25) to the accommodating section (7), and the same operation as described above is performed. Then, after the fin insertion is completed, the pallet (10) is taken out of the device, and the fin-inserted skeleton is passed to the next working step, while the next pallet holding the fin-uninserted skeleton (A) is held. Is installed in the device, and fins are inserted in the same manner as above.

EFFECTS OF THE INVENTION As described above, according to the present invention, the fins from the fin feeding unit are fed into the fin accommodating unit from the end while sliding the upper edge of the tube. The fin receiving plate and the like that have been provided can be omitted, and the device configuration can be simplified. Moreover, since the fins slide on the upper edge of the tube, the contact area is small and therefore the fins are fed into the accommodating part with less frictional resistance, and there is a risk of catching during the transfer of the fins. Is reduced and the fins can be transferred smoothly.

[Brief description of drawings]

1 to 9 show an automatic assembling apparatus for a heat exchanger core according to the present invention. FIG. 1 is a schematic perspective view showing the entire assembling apparatus, and FIG. 2 is an operation of a pin for holding a tube pitch. A sectional view of the pallet showing the mechanism, Fig. 3 (a) and (b) are a perspective view and a sectional view showing a state in which the fins are fed into the fin housing portion from the feeding device, and Fig. 4 is a fin in the fin housing portion. Fig. 5 is a cross-sectional view showing a state in which the fins are positioned in the longitudinal direction, Fig. 5 is a cross-sectional view showing a state in which the fins are held between both side walls of the accommodating portion, and Fig. 6 shows the tubes facing rearward in the parallel direction. Sectional view showing the state of being retracted by 0.5 pitch
The figure is a cross-sectional view showing a state in which the push-in plate is lowered and the fins are inserted between the tubes. Fig. 8 is a cross-sectional view in which the push-in plate is moved up to a position where its lower surface is substantially flush with the lower surface of the fin accommodating portion, where FIG. 9 is a cross-sectional view showing a state in which the tube is temporarily standing by, and FIG. 9 is a cross-sectional view showing a state in which the tube has advanced forward by 1.5 pitches in the parallel direction and the pushing plate has returned to its original position and has returned to the initial operating state. It is a figure. FIG. 10 (a) (b) and FIG. 11 (a) (b) are sectional views showing a conventional device. (2) ...... Tube, (3) ...... Fin, (4) ...... Heat exchanger core automatic assembly device, (6) ...... Tube transfer device, (7) ...... Fin housing part, (8) ...... Push plate,
(25) …… Fin feeding section (fin feeding section).

Claims (1)

[Claims] 1. A tube transfer device for holding a plurality of tubes arranged in parallel at predetermined intervals and intermittently transferring the tubes in the parallel direction, and a direction parallel to the tubes above the tube transfer device. And a fin housing for housing the fin in a mode in which the lower surface of the fin is supported by the upper edge of the tube, and a fin transporter for feeding the fin into the housing from one longitudinal end of the fin housing. The feeding unit and the pressing plate that enters the fin housing from above and inserts the fins between the tubes are provided, and the tube transfer device positions the tubes immediately below the fin housing and temporarily stands by. In this state, the fin feeding unit feeds the fins into the fin housing unit, and in the fin housing state, the tube transfer device moves the gap between the tubes to directly below the fin housing unit. An automatic heat exchanger core assembling apparatus, characterized in that a pushing plate is controlled so as to push fins between tubes in a state of temporarily standing by.