KR101735273B1 - Apparatus of manufacturing a multi-row refrigerant tube and method of manufacturing the refrigerant tube - Google Patents

Apparatus of manufacturing a multi-row refrigerant tube and method of manufacturing the refrigerant tube Download PDF

Info

Publication number
KR101735273B1
KR101735273B1 KR1020150140771A KR20150140771A KR101735273B1 KR 101735273 B1 KR101735273 B1 KR 101735273B1 KR 1020150140771 A KR1020150140771 A KR 1020150140771A KR 20150140771 A KR20150140771 A KR 20150140771A KR 101735273 B1 KR101735273 B1 KR 101735273B1
Authority
KR
South Korea
Prior art keywords
refrigerant tube
forming die
forming
hole
width
Prior art date
Application number
KR1020150140771A
Other languages
Korean (ko)
Other versions
KR20170041392A (en
Inventor
정무길
Original Assignee
(주)디엠피테크
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)디엠피테크 filed Critical (주)디엠피테크
Priority to KR1020150140771A priority Critical patent/KR101735273B1/en
Publication of KR20170041392A publication Critical patent/KR20170041392A/en
Application granted granted Critical
Publication of KR101735273B1 publication Critical patent/KR101735273B1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/02—Stabbing or piercing, e.g. for making sieves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/04—Reducing; Closing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The present invention is characterized in that a plurality of refrigerant tube portions (10A, 10B) having the same structure are connected to a head pipe (1) of a heat exchanger in a refrigerant tube strip (P) (12) and (13) end-formed at both ends of each row so as to be inserted into the fitting holes (3, 4) of the refrigerant tube A piercing device unit 100 for piercing a hole R having a predetermined length 2H and a width in the connecting portion 11 of the reclaimed refrigerant tube strip P intermittently fed at intervals corresponding to the length L of the refrigerant tube 10, );
Both side walls of the first refrigerant tube portion 10A located on one side in the width direction of the hole R and both side walls of the second refrigerant tube portion 10B located on the other side in the width direction of the hole R are formed An end-forming device unit 200 for simultaneously pressing a die set to form engaging portions 12 and 13 having a relatively small width W1; And
The end-formed portion of the end-forming apparatus 200 is cut in the width direction along the center of the end-formed portion so that the end-formed portion is halved in the longitudinal direction so that the single refrigerant tube 10 And a cutting device 300 for separating the cutting device 300.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for manufacturing a reheat-type refrigerant tube, and a method for manufacturing a reheat-type refrigerant tube using the same.

  The present invention relates to an apparatus for manufacturing a refrigerant tube of a heat exchanger and a method of manufacturing the refrigerant tube, and more particularly, to a single plate-type refrigerant tube having a plurality of refrigerant channels arranged in parallel to each other, A long strip Po of a multi-row typed refrigerant tube arranged in a plurality of rows and connected to each other is intermittently fed by a predetermined length to pierce the refrigerant tube strip Po, end forming, and a cutting process to a reheat type refrigerant tube of a certain length shown in FIG. 1, and a method of manufacturing the refrigerant tube.

A flat type refrigerant tube having a plurality of refrigerant passages and a wide width in comparison with a thickness is used as a refrigerant tube used in a heat exchanger such as a condenser of a domestic or automotive air conditioner.

Such a refrigerant tube is formed by cutting a plate-type refrigerant tube strip having a long length, which is intermittently horizontally conveyed, into a plate-type refrigerant tube having a predetermined length, and at the same time, And is formed by compression molding with a forming tool. The process of compressing and molding the cut ends of such a refrigerant tube is generally called "end forging". Such an end-folding operation is disclosed in the following Patent Document 1 (FIGS. 1 and 6).

In order to improve the condensing efficiency in the condenser of the air conditioner and further improve the performance of the air conditioner, a so-called " reheat-type " type heat exchanger in which a plurality of refrigerant tubes, 'Refrigerant tubes have been developed and used.

In the end-forming apparatus described in Patent Document 1, end-forming operations can be performed only on both ends of one refrigerant tube located in one row, and a plurality of refrigerant tubes In order to end-form both ends, it is necessary to perform two end-forming operations repeatedly at one end of the refrigerant tube, so that the quality of the end-forming is unstable and the probability of occurrence of defects is high. In addition, .

Therefore, there was a need for an end-forming device particularly suited for the end-forming operation of a double-row refrigerant tube.

KR 10-2013-0079899A

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a refrigerant heat exchanger in which a plurality of refrigerant tubes having the same structure are arranged in a plurality of rows in the transverse direction, The present invention provides an apparatus for manufacturing a multi row refrigerant tube having an end portion formed to be inserted into an engagement hole of a head pipe.

In order to achieve the above object, the present invention is characterized in that a plurality of refrigerant tube portions having the same structure are connected and arranged in a plurality of rows in the transverse direction through a connecting portion, and both end portions of the refrigerant tubes in each row are connected to a coupling hole An apparatus for producing a recuperative refrigerant tube having an end-formed coupling portion at its tip to be inserted,

Wherein the recuperative refrigerant tube manufacturing apparatus comprises:

A piercing device arranged horizontally and piercing a hole having a predetermined length and width in a connecting portion of the recuperative refrigerant tube strip intermittently fed at intervals corresponding to the length of the refrigerant tube of the present invention;

Both side walls of the first refrigerant tube portion located on one side in the widthwise direction of the hole and both side walls of the second refrigerant tube portion located on the other side in the widthwise direction of the hole are simultaneously pressed by a forming die to form respective relatively small- An end-forming device unit for molding; And

And a cutting device part for cutting a single refrigerant tube in the refrigerant tube strip by cutting the end-formed part in the width direction along the center of the end-formed part so that the end-formed part is divided in the longitudinal direction .

The set of forming die of the end-forming unit includes a set of upper forming die and a set of lower forming die disposed on the upper side of the refrigerant tube strip,

Wherein the upper forming die set is constituted by a first upper forming die on the left side and a second upper upper forming die on the right side which are symmetrically arranged so as to face each other about the vertical center line,

The lower forming die set is constituted by a first lower forming die on the left side and a second lower forming die on the right side which are arranged symmetrically with respect to each other about the vertical center line with the same structure.

The first upper forming die may include a first upper left forming portion for pressing the upper left portion of the engaging portion of the first refrigerant tube portion so as to reduce and form the lower portion of the first upper forming die, And a second left upper molding section for reducing and forming the shape of the upper portion of the left side wall of the engaging section of the second refrigerant tube section,

The second upper forming die includes: a first right upper molding section for forming a right upper wall portion of an engaging portion of a first refrigerant tube portion in a state of being entered into a hole of a connecting portion; And a second right upper molding section for molding,

The first lower forming die includes a first left lower molding part for forming a lower portion of the left side wall of the engaging part of the first refrigerant tube part and a second left lower molding part for pressing the lower left wall of the second refrigerant tube part, And a second left lower molding portion for reducing the shape of the lower wall portion of the left side wall of the coupling portion of the second refrigerant tube portion,

The second lower forming die includes a first lower right lower molding section for pressing the lower portion of the right side wall of the first refrigerant tube portion in the state of entering the hole of the connecting portion to reduce and mold the lower portion of the right side wall of the engaging portion of the first refrigerant tube portion, And a second right lower molding part for reducing the shape of the lower right wall of the coupling part of the second refrigerant tube part.

The first upper forming die and the second upper forming die are arranged such that the first upper forming die and the second upper forming die are biased in a direction in which the intervals between the first upper forming die and the second upper forming die are different from each other, A die spring is inserted into each of the spring mounting holes to be elastically supported,

The first lower forming die and the second lower forming die are biased in a direction in which the intervals between the first lower forming die and the second lower forming die are different from each other, And a die spring is inserted into the hole to be elastically supported.

The present invention also provides a refrigerant tube strip in which a plurality of refrigerant tube portions having the same structure are arranged in a plurality of rows in a transverse direction through a connecting portion between the refrigerant tube portions, A method of manufacturing a recuperative refrigerant tube having an end-formed coupling portion at a tip end to be inserted into an engagement hole of a head pipe,

A piercing step of piercing a hole having a predetermined length and width at a longitudinal end of a connecting portion of a refrigerant tube strip which is intermittently conveyed by a predetermined distance in a horizontally arranged state;

An end forming step of pressing side walls on both sides in the width direction of the refrigerant tube strip formed with the holes and side walls on both sides in the width direction of the hole with an end forming tool to reduce the width to a width relatively smaller than the width of the refrigerant tube strip; And

And cutting the center of the end-formed portion such that the end-formed portion is half-divided in the longitudinal direction of the refrigerant tube strip.

Wherein the end forming step includes moving the upper forming die set and the lower forming die set to support upper and lower surfaces of the refrigerant tube strip, respectively; And a shaping step of further feeding the upper forming die set and the lower forming die set to press the side wall of the refrigerant tube strip to form an engaging portion.

The forming of the first refrigerant tube portion and the forming of the second refrigerant tube portion may be performed by forming the left side wall of the first refrigerant tube portion and the left side wall of the second refrigerant tube portion together by a molding portion formed on one foaming die, And is formed at one time by a pair of forming parts formed on the forming die.

According to the present invention described above, it is possible to manufacture a recuperative refrigerant tube, thereby realizing a heat exchange apparatus having a high thermal efficiency, shortening the forming process of the end forming section, and increasing productivity by continuous processing operations.

1 is a perspective view of a recuperative refrigerant tube manufactured by the apparatus of the present invention.
FIG. 2 is a horizontal sectional view of a reheat-type refrigerant tube of the present invention assembled to a head pipe of a heat exchanger. FIG.
FIG. 3 is a plan view showing a process of manufacturing a reheat-type refrigerant tube in a reheat-type refrigerant tube strip according to the present invention, sequentially along the moving direction of the refrigerant tube strip.
FIG. 4 is an enlarged detail view of the 'A' portion of FIG. 3, showing an enlarged detail of a portion of the refrigerant tube strip where the hole R is pierced in the piercing process.
FIG. 5 is an enlarged detail view of the 'B' portion of FIG. 3, which is a partial enlarged view of an area where the end forming operation is performed on the refrigerant tube strip in the end forming step subsequent to the piercing step.
6A is a cross-sectional view of the refrigerant tube strip shown along the line X1-X1 in FIG. 3, and is a cross-sectional view of the refrigerant tube strip before the end-forming step.
FIG. 6B is a cross-sectional view of the refrigerant tube strip taken along line X2-X2 in FIG. 3, and is a cross-sectional view of the joint portion of the refrigerant tube portion end-formed in the end-forming step.
FIG. 7 is a front view of the end-forming apparatus in the apparatus for manufacturing a reheat-type refrigerant tube of the present invention, showing the overall configuration of the end-forming apparatus shown in the front of the refrigerant tube strip in the conveying direction.
Fig. 8 is a front view showing the main operation part in the end-forming device part of Fig. 7; Fig.
(A) is a bottom view of the upper end forming die set shown in (b), (b) is a front view of the upper end forming die set (C) is a front view of the lower end-forming die set, and (d) is a plan view of the lower end-forming die set.
Figs. 10A to 10C are diagrams showing step-by-step operation states of a main portion of the end-forming apparatus in the end-forming step, Fig. 10A is a partial enlarged view of a state before the upper / lower support plate is moved to the end-
Fig. 10B is a partially enlarged view of a state in which the upper / lower support plate is moved to the end-forming working position and the upper surface and the lower surface of the work (repetitive refrigerant tube)
Fig. 10C shows a state in which the upper / lower forming die set provided on the upper / lower support plate in the state of Fig. 10B is pressed by the corresponding pressing portion of the upper / lower movable block, In which the side wall of the coupling portion of the refrigerant tube portion is end-formed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a reclaimed refrigerant tube manufacturing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

1 shows a refrigerant tube 10 manufactured according to a manufacturing apparatus and a method according to the present invention. As shown in Fig. 1, the refrigerant tube 10 is provided with a plurality of refrigerant passages therein, and a plurality of plate-shaped refrigerant tube portions 10A and 10B having a thickness thinner than the entire width thereof are arranged in parallel The side walls facing each other of the two adjacent refrigerant tube portions are integrally connected to each other by the connecting portion 11.

The recuperative refrigerant tube 10 of FIG. 1 is a single refrigerant tube 10 of a certain length L through a series of processes on a long refrigerant tube strip P continuously formed in the longitudinal direction as shown in FIG. .

Hereinafter, the refrigerant tube 10 of the present invention will be illustrated and described as an example of two refrigerant tube portions of the first refrigerant tube portion 10A and the second refrigerant tube portion 10B, but the present invention is not limited to this, The present invention is also applicable to a refrigerant tube having a plurality of refrigerant tube portions.

2, the refrigerant tube 10 is connected to the head pipe 1 of the heat exchanger at both ends in the longitudinal direction of the first refrigerant tube portion 10A and the second refrigerant tube portion 10B, And engaging portions 12 and 13 which are respectively inserted into the engaging holes 3 and 4 formed in the side wall 2 of the body 1. These engaging portions 12 and 13 have a width W1 that is smaller than the width W0 of each of the refrigerant tube portions 10A and 10B. The engaging portions 12 and 13 are formed by the end-forming device unit 200 in the 'end forming' stage of both ends of each of the refrigerant tube portions 10A and 10B.

When the engaging portions 12 and 13 of the refrigerant tube portions 10A and 10B are inserted into the corresponding engaging holes 3 and 4 of the head pipe 1, A recess 11a is provided between the engaging portions 12 and 13 so as not to interfere with the engagement of the engaging portions 12 and 13.

6A, an upper portion and a lower portion of the left side wall of the first refrigerant tube portion 10A are divided into a first left side wall portion 10A1 and a first left side wall portion 10A1, respectively, before the end forming operation, Left wall lower portion 10A3 ', and the upper and lower right wall portions are referred to as a' first right upper wall portion 10A2 'and a' first right lower wall portion 10A4 ', respectively. The left upper wall and the lower wall of the second refrigerant tube portion 10B before the end forming operation are referred to as a second left upper wall 10B1 and a second lower left wall 10B3, And the lower portion are referred to as a " second right side wall upper portion 10B2 ", and a " second right side wall lower portion 10B4 ", respectively.

6B, the upper and lower portions of the left side wall of the first engaging portion 12 formed on each of the refrigerant tube portions 10A and 10B after the end forming operation are respectively referred to as the first engaging portion left wall upper portion 121 and the first coupling portion left wall lower portion 123. The upper and lower portions of the right side wall of the first coupling portion 12 are referred to as a first coupling portion right wall upper portion 122, And is referred to as a right wall lower portion 124. The upper and lower portions of the left side wall of the second coupling portion 13 formed in the second refrigerant tube portion 10B are referred to as a second coupling portion left wall upper portion 131 and a second coupling portion left wall lower portion 123, And the upper and lower portions of the right side wall are referred to as a second coupling right side wall upper portion 132 and a second coupling right side wall lower portion 134, respectively.

As shown schematically in FIG. 3, the above-described apparatus for manufacturing the refrigerant tube 10 includes a plurality of refrigerant tubes 10 arranged horizontally and intermittently fed at intervals corresponding to the length L of the refrigerant tube 10 of the present invention, A piercing device part (100) for piercing a hole (R) having a predetermined length (2H) and a width in a connection part (11) of the tube strip (P); Both side walls of the first refrigerant tube portion 10A located on one side in the width direction of the hole R and both side walls of the second refrigerant tube portion 10B located on the other side in the width direction of the hole R, An end-forming device unit 200 which pressurizes by an end-forming tool opposed to each end and forms an end-shape with each relatively small width W1; And the end-formed portion of the end-forming device portion 200 is cut in the width direction along the center of the end-formed portion so as to be half (1/2) in the lengthwise direction to form a single refrigerant tube And a cutting device 300 for separating the cutter 10 from the cutting device 300.

The piercing device unit 100 is provided with holes R (see FIG. 3) at both ends of the connecting portion 11 to form the recess 11a of FIG. 1 in the connecting portion 11 of the refrigerant tube strip P ). The hole R has a length twice as long as a single recess and a width of a single recess as shown in FIGS. 4 and 5 so as to form two consecutive recesses 11a at a time, Have the same width.

Although the piercing device 100 is shown in a box of a single dotted line in FIG. 3 and its detailed structure is not shown, the piercing device 100 may be disposed above and below the refrigerant tube strip P transported horizontally, An upper support plate and a lower support plate simultaneously moving toward the center line CL of the apparatus by the simultaneous extension operation of the cylinders to simultaneously support the upper surface and the lower surface of the refrigerant tube strip P; The refrigerant tube strip P is supported by the upper and lower support plates and is lowered further downward than the downward distance of the upper support plate by the additional extension operation of the upper cylinder so that the connection portion 11 of the refrigerant tube strip R) of the punching die unit. However, the punch has a size and a width corresponding to the holes R in Figs. 3 and 4.

The schematic configuration of the end-forming device portion 200 indicated by a box in one line in Fig. 3 is shown in Fig. 7, and the main operating portion of the end-forming device portion 200 is shown separately in Fig. 7, the end-forming apparatus 200 includes a base plate 201 fixed on the ground, an upper fixing plate 202 supported on the upper side of the base plate 201 by a plurality of vertical support rods 202, And a central fixing plate 205 fixed on the center line CL between the base plate 201 and the upper fixing plate 203 and formed with a through hole 204 through which the refrigerant tube strip P passes do. The lower cylinder 206 and the upper cylinder 207 are provided on the base plate 201 and the upper fixed plate 203 so as to face each other. The lower movable block 208 and the upper movable block 209 are connected to the piston rods of the cylinders 206 and 207, respectively.

8, a lower support plate 210 is disposed on the upper side of the lower movable block 208 along a guide bar 211 extending vertically upward from the lower movable block 208, The lower support plate 210 is elastically supported by a lower support spring 212 provided between the lower support plate 210 and the lower movable block 208.

An upper support plate 213 is slidably movable along a guide rod 214 extending vertically downward from the upper movable block 209, An upper support spring 215 is elastically provided between the upper support plate 213 and the upper movable block 209.

As described above, the upper forming plate 220 and the lower forming die set 230 are installed on the moving upper supporting plate 213 and the lower supporting plate 210 so as to face each other.

9A and 9B, the upper forming die set 220 includes a first upper forming die 220 and a second upper forming die 220 disposed symmetrically with respect to each other about the vertical center line, And a second upper forming die 222 on the right side.

The lower forming die set 230 includes a first lower forming die 221 and a second lower forming die 222 which are symmetrically arranged to face each other with a vertical center line as a center and have the same structure as shown in Figures 9 (c) and 9 (d) (231) and a second lower forming die (232) on the right side.

The first upper forming die 221 presses the left side wall upper portion 10A1 of the first refrigerant tube portion 10A before the end forming process shown in Fig. 6A to form the first refrigerant tube < RTI ID = 0.0 > A first left upper molding portion 223 for reducing the shape of the left upper portion 121 of the engaging portion 12 of the connecting portion 10A and a second upper left forming portion 223 for forming an end forming The left upper wall portion 10B1 of the second refrigerant tube portion 10B is pressed to form the left upper wall portion 131 of the engaging portion 13 of the second refrigerant tube portion 10B after the end forming process shown in FIG. And a second left upper molding part 224 for reducing molding in the shape of the second left upper molding part 224.

6A, the second upper forming die 222 is located on the right side wall upper portion 10A2 of the first refrigerant tube portion 10A before the end forming process shown in Fig. 6A in the state of entering the hole R of the connecting portion 11. [ A first right upper molding part 226 for reducing and forming the shape of the right upper wall 122 of the engaging part 12 of the first refrigerant tube part 10A after the end forming process shown in Fig. 6B, The upper right wall portion 10B2 of the second refrigerant tube portion 10B is pressed before the end forming process to form the upper right wall portion 12B of the engaging portion 13 of the second refrigerant tube portion 10B after the end forming process shown in FIG. And a second right upper molding part 225 for reducing and forming the shape of the second upper right molding part 225 in the shape of the second right upper molding part 225.

The first lower forming die 231 presses the left lower wall portion 10A3 of the first refrigerant tube portion 10A before the end forming process shown in FIG. The first left lower molding portion 233 for reducing the shape of the left lower wall 123 of the coupling portion 12 of the first refrigerant tube portion 10A and the holes R The left lower wall portion 10B3 of the second refrigerant tube portion 10B is pressed before the end forming process to form the engaging portion 13 of the second refrigerant tube portion 10B after the end forming process shown in FIG. And a second left lower molding part 234 for reducing the shape of the left lower wall part 133 of the left side lower molding part 234.

The second lower forming die 232 is inserted into the hole R of the connecting portion 11 and is inserted into the right lower portion 10A4 of the first refrigerant tube portion 10A before the end forming process shown in Fig. A first right lower molding portion 236 for reducing and forming the shape of the right lower portion 124 of the engaging portion 12 of the first refrigerant tube portion 10A after the end forming process shown in FIG. 6B, The lower right wall portion 10B4 of the second refrigerant tube portion 10B is pressed before the end forming process to form the lower portion of the right wall portion of the engaging portion 13 of the second refrigerant tube portion 10B after the end forming process shown in FIG. And a second lower-right lower molding part 235 for reducing and shaping the shape of the lower right molding part 234 in the shape of a right lower molding part.

9A and 9B, the first upper forming die 221 and the second upper forming die 222 are arranged such that the first upper forming die 221 and the second upper forming die 222 are deflected in the direction in which the intervals between the first and second upper forming dies 221, The upper forming die 221 and the second upper forming die 222 are elastically supported by inserting a die spring (not shown) into the respective spring mounting holes 228a and 228b.

9 (c) and (d), the first lower forming die 231 and the second lower forming die 232 are also bent so that the intervals between the first lower forming die 231 and the second lower forming die 232 are different from each other, The first lower forming die 231 and the second lower forming die 232 are elastically supported by insertion of a die spring (not shown) into the respective spring mounting holes 238a and 238b.

This non-working state is shown in FIG. 10A. The upper movable block 209 and the lower movable block 208 move in the direction of approaching the center line CL simultaneously by the extension operation of the respective cylinders in the non-working state of Fig. 10A, The pressing surface 209a of the upper movable block 209 moves the pressure receiving surfaces 221a and 231a of the first upper forming die 221 and the second upper forming die 222 in the direction of arrow V, So that the first upper forming die 221 and the second upper forming die 222 are moved in the direction of approaching each other while at the same time the pressing surface 208a of the lower movable block 208 is also moved in the direction The pressure receiving surfaces 231a and 232a of the forming die 231 and the second lower forming die 232 are pressed to form the first lower forming die 231 and the second lower forming die 232 as shown in FIG. And the end forming operation is performed by the forming portions provided in the respective forming dies.

The refrigerant tube strip P having completed the end-forming operation as described above is moved to the cutting device unit 300. In the cutting device unit 300, the part where the end-forming operation is completed in the end- The cold tubes 10 having a predetermined length L in which the engaging portions 12 and 13 are formed at the tip ends are made.

Hereinafter, a process for manufacturing the recuperative refrigerant tube 10 in the recuperative refrigerant tube strip P using the above-described refrigerant tube manufacturing apparatus will be described.

3, the method for manufacturing a reclaimed refrigerant tube according to the present invention is a method for manufacturing a refrigerant tube strip P which is intermittently transported by a predetermined distance L in a horizontally arranged state, A piercing step (SlO) of perforating a hole (R) having a predetermined length (2H) and a width at the tip thereof; The side walls on both sides in the width direction of the refrigerant tube strip P in which the holes R are formed and the side walls on both sides in the width direction of the hole R are pressed by the end forming tool to make the width Wo of the refrigerant tube strip P An end forming step (S20) of reducing the width to a small width (W1); And cutting (S3) cutting the center of the end-formed portion so that the end-formed portion is half (1/2) in the longitudinal direction of the refrigerant tube strip.

The method for manufacturing the reclaimed refrigerant tube of the present invention will be described below.

[Intermittent transfer of refrigerant tube strip (P)

The intermittent feeding of the refrigerant tube strip P is performed at a distance corresponding to the length L of the refrigerant tube 10 of FIG. 1 to be produced by operating the intermittent feeding mechanism in a state where the refrigerant tube strip P is horizontally arranged Respectively. Although not shown, the intermittent feed mechanism is provided with a refrigerant tube strip P between an endless tracked upper conveying belt in contact with the upper surface of the refrigerant tube strip P and an endless tracked lower conveying belt in contact with a bottom surface of the refrigerant tube strip P And the upper conveyance belt and the lower conveyance belt are simultaneously rotated to convey the refrigerant tube strip P by the length L of the refrigerant tube.

[Piercing step (S10)]

As shown in Fig. 1 and Fig. 2, the piercing step S10 is carried out at both ends of the connecting portion 11 in order to form the recess 11a at the front end of the connecting portion 11 of the refrigerant tube strip P, Thereby forming a hole R. This piercing step S10 is performed in the conventional piercing device unit 100 shown only by the outline in Fig.

3 and 4, the hole R is formed at a position at which the recess 11a of the refrigerant tube 10 is to be formed, which is twice the length H of each recess 11a Is formed at the tip end of the connecting portion 10 so as to have a length 2H corresponding to the width of the recess 11a and a width corresponding to the width of the recess 11a. The left and right sidewalls R1 and R2 of the hole after the above hole processing are formed so as to expose the left sidewall edge of the adjacent first refrigerant tube portion 10A and the right sidewall edge of the second refrigerant tube portion 10B, .

[End forming step (S20)]

3, in the end forming step S20, a hole R formed in the connecting portion 11 of the refrigerant tube strip in the piercing step S10 is inserted into an end-forming device portion 200) by a predetermined length (L).

3 and 5, in the state where the hole R perforated in the connection portion 11 is positioned in the end-forming device portion 200, a forming die (not shown) located on the upper side and the lower side of the refrigerant tube strip P, The upper and lower support surfaces of the forming die sets 220 and 230 are respectively pressed on the upper and lower surfaces of the engaging portions 12 and 13 of the refrigerant tube strip P to separate the refrigerant tube strips P Fix to horizontal position.

The side walls R1 and R2 of the hole R formed in the connection portion 11 and both side walls of the refrigerant tube strip P are hammered in a horizontal direction by a forming tool so that each refrigerant of the refrigerant tube strip P The front ends of the tube portions 10A and 10B are contracted in the width direction so that the opposed engaging portions 12 and 13 of the two refrigerant tube portions 10A and 10B continuous in the longitudinal direction are formed at a time. This end forming step S20 is performed by the end-forming apparatus unit 200 shown in Figs.

[Cutting step (S30)]

In the cutting step, the cutter is passed along the center of the end-formed portion in the end-forming step, and the end-formed portion is cut by half (1/2) to form the refrigerant tube 10 ).

10: Recuperative refrigerant tube according to the present invention P: Refrigerant tube strip
10A: first refrigerant tube portion 10B: second refrigerant tube portion
1: head pipe of the heat exchanger 2: side wall of the head pipe
3, 4: engaging hole 11: connecting portion
11a: recesses 12, 13: first and second engaging portions
100: piercing device unit 200: end-forming device unit
300: cutting portion 201: base plate
202: support rod 204: through hole
205: central fixed plate 206, 207: cylinder
208: lower movable block 209: upper movable block
208a, 209a, 209b: pressure surface 210: lower support plate
211: guide rod 212: lower support spring
213: upper support plate 214: guide rod
215: Upper support spring 220: Upper forming die set
221: first upper forming die 221a, 231a:
222: second upper forming die 223: first upper left forming part
224: second left upper molding part 225: second right upper molding part
228a, 228b: spring mounting hole 230: lower forming die set
231: first lower forming die 232: second lower forming die
233: first left lower molding part 234: second left lower molding part
235: second right lower molding part 238a, 238b: spring mounting hole
W0: width of refrigerant tube strip W1: width of end-formed joint
L: length of refrigerant tube R: hole
R1, R2: Left / right wall of hole

Claims (7)

In a refrigerant tube strip P having a plurality of refrigerant tube portions 10A and 10B of the same structure arranged in a plurality of rows in the widthwise direction via the connecting portions 11, (10, 13) having end-formed joints (12, 13) at both ends of each row so as to be inserted into the tubes (3, 4)
In the reclaimed refrigerant tube manufacturing apparatus,
A hole (2H) and a width (H) of a certain length (2H) are formed in the connecting portion 11 of the reheat type refrigerant tube strip P arranged horizontally and intermittently fed at intervals corresponding to the length L of the refrigerant tube 10 of the present invention. A piercing device portion 100 for piercing the piercing portion R;
Both side walls of the first refrigerant tube portion 10A located on one side in the width direction of the hole R and both side walls of the second refrigerant tube portion 10B located on the other side in the width direction of the hole R are formed An end-forming device unit 200 for simultaneously pressing the die sets to form the engaging portions 12 and 13 having a width W1 smaller than the width W0 of the refrigerant tube portions 10A and 10B; And
The end-formed portion of the end-forming apparatus 200 is cut in the width direction along the center of the end-formed portion so that the end-formed portion is halved in the longitudinal direction so that the single refrigerant tube 10 And a cutting device 300 for separating the cutting device 300,
The set of forming die of the end-forming apparatus unit 200 includes an upper forming die set 220 and a lower forming die set 230 disposed on the upper side of the refrigerant tube strip P,
The upper forming die sets 220 have the same structure and are arranged symmetrically with respect to each other with respect to a vertical center line. The first upper forming die 221 and the second upper upper forming die 222 Respectively,
The lower forming die set 230 is composed of a left first lower forming die 231 and a right second lower forming die 232 arranged symmetrically with respect to each other with respect to a vertical center line Wherein the refrigerant tube is made of a thermoplastic resin. delete The method according to claim 1 ,
The first upper forming die 221 includes a first left upper molding section 223 for pressing the left upper wall 121 of the engaging section 12 of the first refrigerant tube section 10A for reduction molding, The left upper wall 10B1 of the second refrigerant tube portion 10B is pressed to the left upper wall portion 10B1 of the engaging portion 13 of the second refrigerant tube portion 10B in the state of entering the hole R of the second refrigerant tube portion 10B And a second left upper molding part (224) for reducing and shaping the first left upper molding part
The second upper forming die 222 is formed by reducing the right side wall upper portion 122 of the engaging portion 12 of the first refrigerant tube portion 10A while entering the hole R of the connecting portion 11 And a second right upper molding part 225 for reducing molding the right side wall upper part 132 of the engaging part 13 of the second refrigerant tube part 10B,
The first lower forming die 231 includes a first left lower molding section 233 for reducing the left lower wall 123 of the engaging section 12 of the first refrigerant tube section 10A and a second lower left molding section 233 The left lower wall portion 10B3 of the second refrigerant tube portion 10B is pressed to the lower left wall portion 133 of the engaging portion 13 of the second refrigerant tube portion 10B in the state of entering the hole R of the second refrigerant tube portion 10B, And a second left lower molding part (234)
The second lower forming die 232 presses the lower right wall portion 10A4 of the first refrigerant tube portion 10A into the first refrigerant tube portion 10A The first lower right lower molding portion 236 for reducing the right lower portion 124 of the engaging portion 12 of the second refrigerant tube portion 10B and the lower right lower portion 134 of the engaging portion 13 of the second refrigerant tube portion 10B, And a second lower-right lower molding part (235) for reducing and shaping the refrigerant. The method according to claim 1 ,
The first upper forming die 221 and the second upper forming die 222 are deflected in a direction in which the intervals between the first upper forming die 221 and the second upper forming die 222 are different from each other, 221 and the second upper forming die 222 are elastically supported by insertion of a die spring into the respective spring mounting holes 228a, 228b,
The first lower forming die 231 and the second lower forming die 232 are also deflected in the direction in which the intervals between the first lower forming die 231 and the second lower forming die 232 are different from each other, ) And the second lower forming die (232) are elastically supported by insertion of a die spring into the respective spring mounting holes (238a, 238b). In a refrigerant tube strip P in which a plurality of refrigerant tube portions 10A and 10B having the same structure are arranged in a plurality of rows in a transverse width direction via a connecting portion 11 between the refrigerant tube portions 10A and 10B, A method of manufacturing a recuperative refrigerant tube (10) having an engaging portion (12, 13) end-formed at a tip end so that both end portions are inserted into an engaging hole of a head pipe of a heat exchanger,
And a piercing hole R for puncturing a hole R having a predetermined length 2H and a width at the longitudinal end of the connecting portion 11 of the refrigerant tube strip P which is intermittently fed by a predetermined distance L in a horizontally arranged state Step S10;
The side walls on both sides in the width direction of the refrigerant tube strip P in which the holes R are formed and the side walls on both sides in the width direction of the hole R are pressed by the end forming tool to make the width Wo of the refrigerant tube strip P An end forming step (S20) of reducing the width to a small width (W1); And
(S3) cutting the center of the end-formed portion so that the end-formed portion is half (1/2) in the longitudinal direction of the refrigerant tube strip,
The end forming step (S20)
Supporting upper and lower surfaces of the refrigerant tube strip P by moving the upper forming die set 220 and the lower forming die set 230;
And a molding step of further transferring the upper forming die set (220) and the lower forming die set (230) so as to press the side wall of the refrigerant tube strip to form an engaging part. delete 6. The method of claim 5,
The molding step is performed by forming the left side wall of the first refrigerant tube portion 10A and the left side wall of the second refrigerant tube portion 10B together by a molding portion formed on one foaming die, And the right side wall and the right side wall of the second refrigerant tube portion (10B) are integrally formed by a pair of forming portions formed in different forming dies.
KR1020150140771A 2015-10-07 2015-10-07 Apparatus of manufacturing a multi-row refrigerant tube and method of manufacturing the refrigerant tube KR101735273B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150140771A KR101735273B1 (en) 2015-10-07 2015-10-07 Apparatus of manufacturing a multi-row refrigerant tube and method of manufacturing the refrigerant tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150140771A KR101735273B1 (en) 2015-10-07 2015-10-07 Apparatus of manufacturing a multi-row refrigerant tube and method of manufacturing the refrigerant tube

Publications (2)

Publication Number Publication Date
KR20170041392A KR20170041392A (en) 2017-04-17
KR101735273B1 true KR101735273B1 (en) 2017-05-15

Family

ID=58702915

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150140771A KR101735273B1 (en) 2015-10-07 2015-10-07 Apparatus of manufacturing a multi-row refrigerant tube and method of manufacturing the refrigerant tube

Country Status (1)

Country Link
KR (1) KR101735273B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117505711B (en) * 2024-01-08 2024-03-15 扬州威特科技有限公司 Radiator fin stamping forming machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0574645A1 (en) 1992-06-16 1993-12-22 MAGNETI MARELLI CLIMATIZZAZIONE S.r.l. A method for fixing heat exchange elements to an end plate and a tool for conforming to a circular cross-section the end of a tube of oblong cross-section
JP2007083335A (en) 2005-09-21 2007-04-05 Oomi:Kk Pipe cutter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0574645A1 (en) 1992-06-16 1993-12-22 MAGNETI MARELLI CLIMATIZZAZIONE S.r.l. A method for fixing heat exchange elements to an end plate and a tool for conforming to a circular cross-section the end of a tube of oblong cross-section
JP2007083335A (en) 2005-09-21 2007-04-05 Oomi:Kk Pipe cutter

Also Published As

Publication number Publication date
KR20170041392A (en) 2017-04-17

Similar Documents

Publication Publication Date Title
CN102610978B (en) Method and device for machining motor carbon brush carrier
EP3459651B1 (en) Forging method and forging apparatus
CN104998969A (en) Continuous die for manufacturing vehicle connecting plate and continuous manufacture method of vehicle connecting plate
WO2017191688A1 (en) Fastener element, manufacturing device for fastener element, and manufacturing method for fastener element
KR101735273B1 (en) Apparatus of manufacturing a multi-row refrigerant tube and method of manufacturing the refrigerant tube
KR20080039519A (en) Method for manufacturing ring-shaped member
KR100772170B1 (en) Mold device for forming eyelet and eyelet manufactureing for method
KR20160110009A (en) Processing station for processing of endless metal profiles
CN100469483C (en) Method for fixing radiator fan on the soldering pipe, device and products thereof
CN204700162U (en) A kind of no waste mine stock layout Die structure progressive die
CN111014451B (en) Progressive stamping die of radiator support
JP2011011214A (en) Method for manufacturing apertured member and device for manufacturing the same
EP3456429B1 (en) Forging method and forging apparatus
US3534456A (en) Punching and riveting machine
KR101105418B1 (en) The apparatus and method of forming eyelet with donut type
CN211757960U (en) Air outlet end cone blanking die of automobile exhaust system
CN204396669U (en) A kind of processing mold of bent angle
JP3941630B2 (en) Part number setup method in press working
CN205324475U (en) Pyriform pipe clamp mold processing
CN110369608B (en) Cutting rib forming device of semiconductor device
CN204396673U (en) A kind of processing mold of casing plate of washing machine
CN211191668U (en) Device for cutting and flanging support
KR102179668B1 (en) Offset fin plate forming apparatus and offset fin foaming method using the same
CN216729091U (en) Clamp does not have scrap (bridge) and upgrades mould
CN111014420B (en) Stamping equipment for non-uniform workpieces

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant