JP2012011480A - Temporary assembly device of heat exchanger core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temporary assembly device of a heat exchanger core preventing dislocation of fins from a prescribed position between tubes in temporarily assembling fins in a tube.SOLUTION: In the temporary assembly device 1 of the heat exchanger core, a sending shaft 1b having engaging parts 1c sandwiching a recessed part 1f on a rotary outer face engages the engaging parts with the plurality of tubes T composing the heat exchanger core and moves the tubes T to the direction Ap orthogonal to the longitudinal direction of the tubes T in a juxtaposed state, and a fin supply part 10 inserts alternately fins C1 and C2 composing the heat exchanger core between the adjacent tubes T toward the sending shaft 1b from a side direction opposite to the sending shaft 1b along the longitudinal direction of the tubes T. The temporary assembly device 1 includes a first dislocation preventing member 1g positioned at an upper part of the sending shaft 1b, inserted into the recessed part 1f, and preventing the dislocation of the fins C1 and C2 inserted between the adjacent tubes T from the fin supply part 10 from the adjacent tubes T.

Description

  The present invention relates to a temporary assembly device for a heat exchanger core in which fins are inserted and arranged between parallel tubes to temporarily assemble a heat exchanger core.

  Conventionally, as a temporary assembly device of a heat exchanger core for temporarily assembling a heat exchanger core by alternately arranging tubes and corrugated fins constituting the heat exchanger core, a pair of feed shafts arranged in parallel is used. A spiral tube guide groove that guides the end portion of the tube is formed on the feed shaft, and a fin guide portion (fin supply portion) that guides the end portion of the corrugated fin between adjacent tube guide grooves is provided. It is known to supply a required number of corrugated fins simultaneously from the insertion device to the fin guide (see, for example, Patent Document 1 and Patent Document 2).

JP-T-2006-521215 JP 09-85541 A

  However, in any of the above conventional heat exchanger core temporary assembly devices, when the fins are temporarily assembled to the tubes, the fins to be inserted between the tubes from the fin guides must be light and easy to deform. Therefore, there is a case where the insertion force is excessively jumped out from a predetermined position between the tubes or bounces off from the predetermined position and deviates from the predetermined position. In this case, there is a problem that the working efficiency is deteriorated by becoming a defective product or by returning a deviated fin to a predetermined position or replacing it with another fin.

  The present invention has been made paying attention to the above problems, and the object of the present invention is to provide a heat exchanger core that can prevent the fins from deviating from a predetermined position between the tubes when temporarily assembling the fins to the tubes. It is to provide a temporary assembly apparatus.

  For this purpose, in the heat exchanger core temporary assembling apparatus according to the present invention, the feed shaft having the engaging portion sandwiching the concave portion on the rotating outer surface engages the engaging portions with the plurality of tubes constituting the heat exchanger core. The tubes are moved in parallel in the direction perpendicular to the longitudinal direction of the tubes, and the fin supply section feeds the fins constituting the heat exchanger core from the side opposite to the feed axis along the longitudinal direction of the tubes. Inserted alternately at predetermined positions between adjacent tubes toward the axis. And the 1st deviation prevention member which suppresses the deviation from the predetermined position between the adjacent tubes of the fin inserted between the adjacent tubes from the fin supply device is inserted in this recessed part, located above the feed shaft. I have.

  In the temporary assembly device of the heat exchanger core according to the present invention, when the fins are temporarily assembled to the tubes, even if the fins supplied from the fin supply unit try to deviate from a predetermined position between the tubes, It is possible to prevent the fin from hitting the first deviation prevention member disposed above the feed shaft at the insertion destination and deviating from the predetermined position. As a result, it is possible not only to ensure the quality of the heat exchanger core but also to improve the work efficiency during production.

It is a top view which shows the temporary assembly apparatus of the heat exchanger core of Example 1 of this invention. It is a side view which shows the temporary assembly apparatus of the heat exchanger core of Example 1 of this invention. It is an enlarged plan view which shows the principal part of the temporary assembly apparatus of the heat exchanger core of the present Example 1. It is an expanded sectional view in the S4-S4 line of FIG. It is an enlarged plan view which shows the principal part of FIG.

  Hereinafter, embodiments of the present invention will be described in detail based on examples shown in the drawings.

First, the overall configuration of the first embodiment will be described.
As shown in FIGS. 1 and 2, the temporary assembly device of the heat exchanger core according to this example of Example 1 is for temporarily assembling the heat exchanger core by arranging tubes and corrugated fins alternately. .

  A fin supply device 10 is connected to the upstream side of the temporary assembly device 1. As shown in FIG. 1, the fin supply device 10 includes a traveling cutting device 11 that cuts the supplied fin material F to obtain two rows of corrugated fins C1 and C2, and each corrugated fin obtained by the traveling cutting device 11. It has the conveyance conveyor 12 which conveys C1, C2, the forced conveyance apparatus 13 which distributes the corrugated fin C1 and the corrugated fin C2, and the accumulation case 14.

In the accumulating case 14, the corrugated fins C1 and C2 conveyed from the forced conveying device 13 are divided into, for example, four sets each consisting of six pieces and held at predetermined positions. Corrugated fins C1 and C2 held in the accumulator case 14 are alternately inserted between adjacent tubes on the temporary assembling apparatus 1 by an insertion device 15 having a cylinder, a piston built in the cylinder, and a pushing portion at the tip of the piston. In this way, one set is extruded at the same time.
The traveling cutting device 11, the conveyor 12, the forced conveying device 13, the accumulator case 14, and the inserting device 15 are connected to the control device 16 and controlled by the control device 16. Table 2006-521215), the details thereof are omitted.

  The temporary assembling apparatus 1 includes a pair of first feed shafts 1a and a second feed shaft (corresponding to the feed shaft of the present invention) 1b that are positioned in parallel at a predetermined interval in the same plane. The first feed shaft 1a and the second feed shaft 1b form a worm shape in this embodiment, and are respectively associated with both ends of a plurality of tubes T, T,... Constituting the heat exchanger. At the same time, the tubes T are moved in the direction AP perpendicular to the longitudinal direction of the tubes T while being arranged in parallel.

  That is, on the outer periphery of the first feed shaft 1a, as shown in detail in FIG. 3, a tube guide groove (corresponding to the engaging portion of the present invention) 1c for guiding the end of the tube T is formed in a spiral shape. A fin guide portion 1d for guiding the end portions of the corrugated fins C1 and C2 is formed between the adjacent tube guide grooves 1c in a spiral shape. The axial length of the fin guide portion 1d is set longer than the axial length of the tube guide groove 1c. Although the diameter of the tube guide groove 1c is the same over the entire length, the diameter of the fin guide portion 1d is constant on the upstream side of the fin supply area, but gradually increases on the downstream side and finally becomes a constant large diameter. It is made into a shape.

  On the other hand, as shown in FIGS. 3 to 5, the second feed shaft 1b is formed in the same manner as the first feed shaft 1a, but only the fin supply area is different from the first feed shaft. That is, in the second feed shaft 1b, the axial length of the fin guide portion 1d formed in a spiral shape is set longer than the axial length of the tube guide groove 1c. In addition, in the upstream portion and the downstream portion from the fin supply area, the tube guide groove 1c formed in a spiral shape has the same diameter over the entire length in the same manner as the first feed shaft 1a, but the fin guide portion 1d has the same diameter. The downstream side gradually becomes larger than the upstream side and finally has a constant large diameter.

  The fin feed area portion of the second feed shaft 1b is formed with a double lead so as to have two leads unlike the first feed shaft 1a, and has a screw groove deeper than the tube guide groove 1c (in the present invention). 1f is formed. The screw groove 1f gradually becomes deeper from the vicinity of the upstream side of the fin supply area of the second feed shaft 1b to the fin supply area, becomes deepest in the fin supply area, and becomes deeper in the fin supply area. The depth becomes gradually shallower, and the bottom thereof is smoothly connected to the fin guide 1d.

The tube guide grooves 1c and fin guide portions 1d provided on the first feed shaft 1a and the second feed shaft 1b are formed so that the spiral directions thereof are opposite to each other, and the relationship between the right screw and the left screw is established. Thus, the motors M1 and M2 (see FIG. 1) are arranged so as to rotate the feed shafts 1a and 1b in opposite directions.
That is, in the first embodiment, as shown in FIG. 3, the first feed shaft 1a is a right screw, the second feed shaft 1b is a left screw, the first feed shaft 1a is rotated clockwise, and the second feed shaft 1b is turned left. I try to rotate it.

  An alignment base 1e for horizontally mounting the tube T and the corrugated fins C1 and C2 is provided between the two feed shafts 1a and 1b, and the tube T extends along the alignment base 1e with an arrow AP. To be sent in the direction.

Further, a tube supply unit (not shown) for supplying the tube T is provided on the upstream side of the both feed shafts 1a and 1b. On the other hand, on the downstream side of the two feed shafts 1a and 1b, there is provided a reinforce supply unit (not shown) for supplying reinforces R arranged vertically.
As shown in FIGS. 1 and 2, the insertion device 15 has a distal end positioned above the first feed shaft 1a on the downstream side of the tube supply unit, and a corrugated fin C1 between the adjacent tubes T and T, C2 is supplied so as to be inserted on the alignment base 1e from the end of the first feed shaft 1a toward the end of the second feed shaft 1b along the longitudinal direction of the tube T.

As shown in FIGS. 3 to 5, when the temporary assembly device 1 is inserted and supplied between the adjacent tubes T and T in the fin supply area portion of the second feed shaft 1 b, the corrugated fins C 1 and C 2 are inserted and supplied. A first worm 1g constituting a first departure restraining member that restrains deviation from between adjacent tubes T and T and a second worm 1h constituting a second departure restraining member are provided. In FIG. 3, the first worm 1g is drawn with a one-dot chain line for easy viewing.
The first worm 1g is disposed so as to be screwed into the screw groove 1f at a position above the second feed shaft 1b and close to the first feed shaft 1a so as to rotate synchronously with the second feed shaft 1b. The worm 1h is arranged so as to be screwed into the screw groove 1f at a position below the second feed shaft 1b and close to the first feed shaft 1a and to rotate synchronously with the second feed shaft 1b.

Next, the operation of the first embodiment will be described.
On the upstream side of the temporary assembly device 1, the tube T is supplied from a tube supply device (not shown). In this supply, the tube T is conveyed toward the fin supply area in a parallel state with both ends engaged with the tube guide grooves 1c of the first feed shaft 1a and the second feed shaft 1b. Go. At the fin supply area position, since the tube T has the second feed shaft 1b formed in the double lead, the distance between the ends of the adjacent tubes T on the second feed shaft 1b side is increased, and the first feed shaft 1a is opened. It becomes larger than the distance between the side ends, and becomes a C shape. As a result, when the gate fins C1 and C2 are inserted between the tubes T, even if the tip portion is slightly shifted in the transport direction AP (direction perpendicular to the insertion direction), the tube T is originally located between the tubes T. It is arranged. In this state, the tube T is stopped at the fin supply area position and waits for insertion of the corrugated fins C1 and C2.

On the other hand, the two rows of corrugated fins C <b> 1 and C <b> 2 obtained by cutting the fin material F by the traveling cutting device 11 are transported to the forced transport device 13 by the transport conveyor 12.
In the forced conveyance apparatus 13, the corrugated fin C1 and the corrugated fin C2 are conveyed to the accumulation case 14 in the state which these were distributed.
In the accumulating case 14, the corrugated fins C1 and the corrugated fins C2 are assembled and held at predetermined positions.

  In the subsequent insertion device 15, the corrugated fins C <b> 1 and C <b> 2 held in the accumulation case 14 are inserted and supplied to the fin supply portion of the temporary assembly device 1 of the heat exchanger core. That is, the insertion device 15 has the corrugated fins C1 and C2 adjacent to the tubes T and T adjacent to each other with the tips of the corrugated fins C1 and C2 positioned on the upper side of the first feed shaft 1a on the upstream side of the reinforcement unit. In the meantime, it supplies along the longitudinal direction so that it may insert on the alignment base 1e toward the side edge part side of the 2nd feed shaft 1b from the side edge part of the 1st feed shaft 1a.

  In this insertion process, the corrugated fins C1 and C2 inserted and supplied between the tubes T and T from the insertion device 15 are supplied so as to jump out excessively during insertion or rebound, and the tubes T Even if it is going to deviate from the predetermined position between T and T, the corrugated fins C1 and C2 are formed by the first worm 1g and the second worm 1h respectively arranged above and below the second feed shaft 1b as the insertion destination. By hitting the upper surface or the lower surface of the tip, it is possible to prevent the predetermined position from deviating in the vertical direction.

  As described above, when the corrugated fins C1 and C2 are reliably placed at predetermined positions between the adjacent tubes T and T on the temporary assembly device 1, the first feed shaft 1a, the second feed shaft 1b, The first worm 1g and the second worm 1h rotate synchronously to pitch the corrugated fins C1 and C2 together with the tube T. In this case, conventionally, the corrugated fins C1 and C2 may be drawn by the rotation of the second feed shaft 1b so as to be engaged with the two lead portions. However, in the first embodiment, the second worm 1h is the second one. Since it is meshed below the feed shaft 1b and rotates synchronously, the corrugated fins C1 and C2 are conveyed while being prevented from being bitten. When the corrugated fins C1 and C2 move further downstream along with the feeding, the corrugated fins C1 and C2 extend in the longitudinal direction from both ends thereof because the diameter of the fin guide portion 1d is increased in this portion. Is compressed toward the center portion. When fed further upstream, the corrugated fins C1 and C2 that have been slightly opened on the second feed shaft 1b side from the first feed shaft 1a side until then by the above-mentioned two-leads are narrowed on the second feed shaft 1b side. And are positioned so as to be parallel with the tube T. When the tube T and the corrugated fins C1 and C2 are sent further downstream in this temporarily assembled state, the reinforcement is supplied from the reinforcement supply section, and the left and right tanks are supplied from the tank supply section (not shown), and the heat exchanger The core is assembled.

As described above, in the temporary assembly device for the heat exchanger core according to the first embodiment, the following effects can be obtained.
(1) In the heat exchanger core temporary assembly device according to the first embodiment, the rotating outer side surface includes the fin guide portion 1d that sandwiches the screw groove 1f, and the fin guide portion 1d includes a plurality of the heat exchanger cores. The first feed shaft 1a and the second feed shaft 1b that are engaged with the tube T and moved in the direction orthogonal to the longitudinal direction of the tube T while the tubes T are arranged in parallel, and the heat exchanger core between the adjacent tubes T and T A plurality of corrugated fins C1 and C2 constituting the first feed shaft 1b are inserted along the longitudinal direction of the tube T from the end of the first feed shaft 1a opposite to the second feed shaft 1b toward the end of the second feed shaft 1b. The corrugated fin supply device 10 is provided, and the screw guide 1d of the second feed shaft 1b is provided with a screw groove 1f. Then, the tubes of the corrugated fins C1 and C2 inserted between the adjacent tubes T and T from the corrugated fin supply device 10 are inserted into the screw grooves 1f of the second feed shaft 1b so as to be positioned above the second feed shaft 1b. 1st worm 1g which suppresses the deviation from T and T was provided.
As a result, when the corrugated fins C1 and C2 are inserted between the tubes T and T, the corrugated fins C1 and C2 supplied from the corrugated fin supply unit 10 will deviate from a predetermined position between the tubes T and T by jumping or rebounding. In this case, the top surfaces of the corrugated fins C1 and C2 come into contact with the first worm 1g disposed above the second feed shaft 1b at the insertion destination and are returned to the predetermined position side, whereby the corrugated fin C1 and Deviation from a predetermined position of C2 can be suppressed.
As a result, it is possible not only to prevent the occurrence of defects and ensure the quality of the heat exchanger core, but also to eliminate the trouble of returning the deviated fins to a predetermined position or replacing them with other fins. Can be improved.

(2) Further, the corrugated fin C1, which is positioned below the second feed shaft 1b and inserted into the screw groove 1f of the second feed shaft 1b and inserted between the adjacent tubes T and T from the corrugated fin supply device 10, A second worm 1h that suppresses deviation from the C2 tubes T and T was provided.
As a result, when the corrugated fins C1 and C2 are temporarily assembled between the tubes T and T, the corrugated fins C1 and C2 supplied from the corrugated fin supply unit 10 are moved from the predetermined positions between the tubes T and T to the second arrangement base 1e. Even when trying to deviate through the gap with the worm 1h, the lower surfaces of the tips of the corrugated fins C1 and C2 come into contact with the second worm 1g disposed below the second feed shaft 1b at the predetermined position side. By returning to step S, it is possible to suppress the deviation of the corrugated fins C1 and C2 from the predetermined positions. In addition, after the corrugated fins C1 and C2 are inserted, the first and first feed shafts 1a and 1b start to rotate, and when the tubes T and the corrugated fins C1 and C2 are alternately conveyed, There are cases where the corrugated fins C1 and C2 are about to be engaged with the two lead portions of the feed shaft 1b, but the second worm 1h is provided below the second feed shaft 1b and meshes with each other. It is possible to prevent C1 and C2 from being caught in the double lead portion of the second feed shaft 1b.
As a result, the quality of the heat exchanger core can be ensured, and the work efficiency during production can be further improved.

(3) Further, the tube guide groove 1c for guiding the end portion of the tube T is formed in a spiral shape, and the tube guide groove 1c is formed in the fin guide portion 1d formed in a spiral shape between the adjacent tube guide grooves 1c. A member that forms a deeper screw groove 1f and suppresses the deviation of the corrugated fins C1 and C2 inserted between the adjacent tubes T and T from the corrugated fin supply device 10 from the tubes T and T is a second feed shaft 1b. The first worm 1b and the second worm 1b are inserted into the screw groove 1f and rotated synchronously with the second feed shaft 1b.
Accordingly, the first worm 1 and the second worm 1b can be rotated in synchronization with the rotation of the second feed shaft 1b.
As a result, the first worm 1 and the second worm 1b convey the corrugated fins C1 and C2 in the conveying direction AP at the same speed as the second feed shaft 1b while preventing deviation of the corrugated fins C1 and C2 in contact with them. can do. This makes it possible to hold a more stable position.

  The present invention has been described based on the above embodiments. However, the present invention is not limited to these embodiments, and is included in the present invention even when there is a design change or the like without departing from the gist of the present invention. .

  For example, in the temporary assembly device of the heat exchanger core of the first embodiment, an example in which the fin material F is divided into two on the upstream side of the traveling cutting device 11 to produce two rows of corrugated fins C1 and C2 has been described. However, the number of rows can be set as appropriate, and may be applied to, for example, single row formation such as one row, or multi-row molding of three or more rows of corrugated fins. Therefore, the number of fins supplied to the temporary assembly device 1 can be set as appropriate, and may be two at the same time. The fins are not limited to corrugated fins, and may be various fins.

  Moreover, the fin supply part of this invention is not restricted to the corrugated fin supply apparatus 10 of an Example, You may become another structure. That is, the supply of fins to the temporary assembly apparatus of the present invention is not limited to the accumulator case of the embodiment, and other fin supply apparatuses such as a belt conveyor can be used.

DESCRIPTION OF SYMBOLS 1 Temporary assembly apparatus 1a 1st feed shaft 1b 2nd feed shaft 1c Tube guide groove (engagement part)
1d Fin guide part 1e Alignment base 1f Screw groove (concave part)
1g 1st worm (1st deviation control member)
1h Second worm (second deviation suppressing member)
DESCRIPTION OF SYMBOLS 10 Corrugated fin supply apparatus 11 Travel cutting apparatus 12 Conveyor 13 Forced conveying apparatus 14 Accumulation case 15 Insertion apparatus 16 Control apparatus C Corrugated fin F Fin material M1 Motor M2 Motor R Reinforce T Tube

Claims (3)

A feed shaft having an engaging portion sandwiching a recess on a rotating outer surface engages the engaging portion with a plurality of tubes constituting the heat exchanger core, and the tubes are arranged in parallel and orthogonal to the longitudinal direction of the tubes. The fin supply part moves the fins constituting the heat exchanger core between the tubes adjacent to the feed shaft from the side opposite to the feed shaft along the longitudinal direction of the tube. In the temporary assembly device of the heat exchanger core that is inserted alternately at a predetermined position,
The fin is inserted above the feed shaft and inserted into the recess of the feed shaft, and the fin inserted between the adjacent tubes from the fin supply device is prevented from deviating from a predetermined position between the adjacent tubes. 1 equipped with a deviation deterrent member,
A temporary assembly device for a heat exchanger core. In the temporary assembly apparatus of the heat exchanger core according to claim 1,
The temporary assembly device for a heat exchanger core, wherein the first deviation inhibiting member is a member that rotates in synchronization with the rotation of the feed shaft. In the temporary assembly apparatus of the heat exchanger core according to claim 1 or 2,
It is located below the feed shaft and inserted into the recess of the feed shaft, and the deviation of the fin inserted from the fin supply device between the adjacent tubes in synchronism with the rotation of the feed shaft from the tube. A temporary assembly device for a heat exchanger core, comprising a second deviation inhibiting member for inhibiting.

Images