KR20040044272A - Header pipe manufacture apparatus for heat exchanger - Google Patents

Abstract

PURPOSE: An apparatus for manufacturing header pipe for heat exchanger on the outer side of which connection hole and supporting rib of the header pipe are projectingly formed in such a way that cooling tube of the heat exchanger is connected to the header pipe. CONSTITUTION: The apparatus(100) for manufacturing header pipe for heat exchanger is characterized in that a punch(120) having cutting part and burring part is connected to an end part of a supporting shaft(110) to which pipe(210) is insertingly supported in such a manner that the punch is lowered and lifted by a lowerable and liftable means(130) so that the connection hole is formed by perforating a connection hole on the pipe as the cutting part of the punch is primarily pressing to the outer side the inner surface of the pipe insertingly supported to the supporting shaft if the punch is lifted, and a connection rib continuously bent from an inlet of the connection hole to the outer side of the pipe is formed by expandably opening the pipe by pushing an inlet of the connection hole to the outer side of the pipe as the burring part of the punch is being advanced into the perforated connection hole.

Description

Heat exchanger header pipe manufacturing equipment {HEADER PIPE MANUFACTURE APPARATUS FOR HEAT EXCHANGER}

The present invention relates to a header pipe manufacturing apparatus for a heat exchanger, and more particularly, to form a coupling hole and a support rib of the header pipe to which the cooling tube of the heat exchanger is coupled so that the flow of the refrigerant passing through the header pipe is smoothly prevented. The present invention relates to a heat exchanger header pipe manufacturing apparatus.

In general, as shown in FIG. 1, a plurality of cooling tubes 12 are coupled between a plurality of header pipes 11 arranged vertically or horizontally in parallel.

When the header pipe 11 and the cooling tube 12 of the heat exchanger 10 are coupled to each other, the coupling hole 11a is formed by punching at a predetermined interval along the longitudinal direction on the outer circumference of the header pipe 11. And the end of the cooling tube 12 is inserted into the coupling hole (11a) of the header pipe 11 and then welded around the coupling hole (11a) of the header pipe 11 to the hollow portion of the header pipe (11) 11b and the hollow portion 12b of the cooling tube 12 are coupled to communicate with each other.

When the coupling hole 11a is formed on the outer circumference of the header pipe 11, as shown in FIG. 2, the punch 20 punches the inner circumferential surface of the header pipe manufacturing device 11 while punching it inward. The coupling hole 11a is formed through the outer circumferential surface of the pipe 11 and at the same time, the outer circumferential surface of the header pipe 11 is pushed and partially bent by the punch 20 to be pressed at the inlet of the coupling hole 11a. Successive coupling ribs 11c are formed to protrude into the hollow portion 11b.

Therefore, when the refrigerant passes through the header pipe 11, the coupling ribs 11c not only disturb the flow of the refrigerant, but when a certain time elapses, impurities contained in the refrigerant are caught and accumulated in the coupling ribs 11c. In addition to obstructing the flow of the heat exchanger 10, such as sealing the hollow portion 12b of the cooling tube 12, there was a problem that causes a serious deterioration of the function.

The present invention has been proposed in view of the above problems, and an object thereof is to provide a header pipe manufacturing apparatus for a heat exchanger that is formed so that the coupling hole and the coupling rib of the header pipe to which the cooling tube of the heat exchanger is coupled to protrude outward. will be.

According to a feature of the present invention for achieving the above object, a punch having a cutting portion and a burring portion at an end of a support shaft into which a pipe is inserted and supported is liftable by lifting means, so that when the punch is raised, the punch is primarily The cutting part punches the inner surface of the pipe inserted and supported by the support shaft to the outside to form a coupling hole. Subsequently, the burring part of the punch enters the drilled coupling hole and pushes the inlet of the coupling hole to the outside of the pipe and expands it. There is provided a header pipe manufacturing apparatus for a heat exchanger, which is configured to form a coupling rib that is continuously bent out of a pipe at an inlet of the coupling hole.

According to a feature of the present invention, a punch in which a cut portion and a burring portion are sequentially formed is inserted into and supported by a support shaft in which a punch is formed by a lifting means, and then the punch is raised so that the cut portion of the punch is primarily a hollow portion of the pipe. Pressing the inner surface to the outside while punching to form a coupling hole, and subsequently enters the coupling hole boring portion of the punch while pushing the coupling hole inlet to the outside of the pipe to expand and bend out of the pipe at the inlet of the coupling hole Provided is a header pipe for a heat exchanger, characterized in that the coupling ribs are formed.

Figure 1a and Figure 1b is a partial perspective view and a cross-sectional view showing the combination of the header pipe and the cooling tube of a conventional heat exchanger.

2 is a configuration diagram showing a process for manufacturing a header pipe in the prior art.

3 is a block diagram showing an apparatus for manufacturing a heat exchanger header pipe according to an embodiment of the present invention.

Figure 4 is a perspective view showing the main part of the heat exchanger header pipe manufacturing apparatus of the present invention.

Figure 5a and Figure 5b is a cross-sectional view showing a state in which the header pipe is manufactured by the heat exchanger header pipe manufacturing apparatus of the present invention.

6a and 6b is a cross-sectional view showing a combination of the header pipe and the cooling tube produced by the heat pipe heat exchanger manufacturing apparatus of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: heat exchanger header pipe manufacturing apparatus

110: support shaft 111: fixed bracket

112: holder 120: punch

121: cutting portion 122: burring portion

123: inclined sliding hole 123a: locking slide projection

130: lifting means 131: guide hole

132: blowout hole 133: cylinder

133a: Piston 140: Support Block

150: base 160: chuck

170: transfer means 171: rail

172: transfer block 172a: slide coupling hole

173: lever 174: guide bar

174a: Ratchet Hole 175: Brace

180: pushback rod 180-1: lifting rod

180-2: feed rod 181: inclined guide surface

181a: Hanging slide hole 210: pipe

220: coupling hole 230: coupling rib

240: hollow part

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, the heat pipe heat exchanger manufacturing apparatus as follows.

3 is a configuration diagram showing a heat exchanger header pipe manufacturing apparatus according to an embodiment of the present invention, Figure 4 is a perspective view showing the main part of the heat exchanger header pipe manufacturing apparatus of the present invention.

The heat pipe heat exchanger manufacturing apparatus 100 of the present invention as shown is a punch 120 having a cut portion 121 and a burring portion 122 at the end of the support shaft 110 is inserted and supported by the pipe 210 The hollow portion of the pipe 210 coupled to the elevating means by the elevating means 130 so that when the punch 120 is raised, the cut portion 121 of the punch 120 is inserted and supported by the support shaft 110. 240 to form a coupling hole 220 by pressing the inner surface to the outside, and subsequently the burring portion 122 of the punch 120 enters the perforated coupling hole 220 and the entrance of the coupling hole 220. Is expanded while pushing to the outside of the pipe 210 is configured to form a coupling rib 230 that is subsequently bent out of the pipe 210 at the inlet of the coupling hole 220.

In addition, one end of the support shaft 110 is fixedly coupled to the support block 140, the support block 140 is fixedly disposed on one side of the base 150, the support shaft on the other side of the base 150 The bite chuck 160 for holding and fixing the pipe 210 inserted into the 110 is installed and configured to be transported horizontally along the base 150 by the transfer means 170.

Lifting means 130 for elevating the punch 120 is a guide hole 131 is formed in the support shaft 110, the punch 120 is inserted into the front end of the support shaft 110 to be lifted. The take-out hole 132 is formed to communicate with the guide hole 131 orthogonal to each other, the push back rod 180 is slidably coupled to the guide hole 131 of the support shaft 110, the push back An inclined guide surface 181 and an inclined sliding hole 123 are formed on the front end of the rod 180 and the lower side of the punch 120 so as to be slidably coupled to each other, and the inclined guide surface 181 and the inclined sliding hole ( A locking slide hole 181a and a locking slide protrusion 123a are formed in the 123 so as to be slidably engaged with each other, and a rear end of the pushback rod 180 of the cylinder 133 which is operated by pneumatic or hydraulic pressure. Piston 133a is coupled in a straight line, the seal The punch 120 coupled to the inclined guide surface 181 of the pushback rod 180 is ejected up and down through the ejection hole 132 according to the forward backward movement of the pushback rod 180 by the 133. It is configured to process the pipe 210 inserted into the support shaft 110 while being supported.

At this time, the cylinder 133 is fixedly installed in the support block 140, the support shaft 110 is detachably fixed to one side of the support block 140 by a fixing bracket 111, The rear end of the pushback rod 180 and the piston 133a of the cylinder 133 are coupled to interlock with each other in a straight line within the support block 140.

In the conveying means 170 for conveying the bite chuck 160, a plurality of rails 171 are horizontally arranged parallel to the upper side of the base 150, and the rail 171 is coupled to the bite chuck 160. The transfer block 172 having a slide coupling hole 172a is coupled to each other, and a lever 173 is formed on an upper surface of the transfer block 172 so that an operator grasps the lever 173 and moves the transfer block 172. By feeding the pipe 210 is bitten by the chuck 160 is inserted into the support shaft 110 to adjust the position processed by the punch 120.

In addition, the guide bar 174 having a plurality of ratchet holes 174a on the upper surface of the base 150 is disposed to be parallel to and adjacent to the rail 171, the guide bar 174 on the transfer block 172. The latch 175 which is locked to the ratchet hole 174a of the latch 175 is rotatably coupled to control the transfer section of the chuck 160 that fixes the pipe 210, and a plurality of guide bars 174. The spacing of the ratchet holes 174a to be formed is formed to match the spacing between the coupling holes 220 to be formed in the pipe 210.

In accordance with the change in the diameter of the pipe 210 inserted into the support shaft 110 is provided with a plurality of holders 112 formed in different diameters so as to be coupled to the outer periphery of the support shaft 110 by replacement It is configured to more stably support the pipe 210 inserted into the support shaft 110.

The pushback rod 180 is divided into a lifting rod 180-1 and a feeding rod 180-2 having an inclined guide surface 181, and the lifting rod 180-1 and the feeding rod 180-. 2) is configured to be separated from each other by a screw coupling to replace the punch 120 and the lifting rod (180-1) formed in a different diameter depending on the diameter of the coupling hole 220 formed in the pipe (210) Configured to do so.

The action of the heat exchanger header pipe manufacturing apparatus 100 of the present invention configured as described above is as follows.

When the coupling hole 220 is formed in the header pipe using the heat exchanger header pipe manufacturing apparatus 100 of the present invention, first, the pipe 210 is bitten by the bite chuck 160 as shown in FIGS. 3 and 4. After fixing, the transfer block 172 is transferred to allow the pipe 210 to enter a section of the support shaft 110, that is, the latch 175 is caught by the first ratchet hole 174a of the guide bar 174. .

Then, when the piston 133a of the cylinder 133 is advanced, the pushback rod 180 coupled with the piston 133a is advanced as shown in FIGS. 5A and 5B, and at the same time, the pushback rod ( The punch 120 coupled to the inclined guide surface 181 of the 180 slides upward along the inclined guide surface 181 and rises through the ejection hole 132 of the support shaft 110. The cut portion 121 of the punch 120 that is raised is punched while pressing the inner surface of the pipe 210 inserted and supported by the pipe 210 to the outside to form a coupling hole 220, and subsequently the punch ( As the burring portion 122 of the 120 enters the perforated coupling hole 220, the inlet of the coupling hole 220 is pushed outwardly to the outside of the pipe 210 to be expanded, thereby expanding the pipe 210 at the inlet of the coupling hole 220. To form a coupling rib 230 that is subsequently bent out of the.

Then, when the piston 133a of the cylinder 133 is reversed, the pushback rod 180 coupled with the piston 133a is backward, and at the same time, the inclined guide surface 181 of the pushback rod 180. The punch 120 coupled to the slide slips downward along the inclined guide surface 181 and exits from the coupling hole 220 of the processed pipe 210 to the ejection hole 132 of the support shaft 110. The pipe 210 is fully inserted so that the pipe 210 can be transported along the support shaft 110.

Thereafter, the brace 175 transfers the transfer block 172 to the section of the guide bar 174 which is caught by the next ratchet hole 174a, and then transfers the pipe 210 bited to the chuck 160 and then the cylinder 133 again. By repeating the process of reversing the piston (133a) of the front) as described above, the punch 120 presses the inner surface of the pipe 210 to the outside as the coupling hole 220 and the coupling hole 220 in the pipe 210 The coupling rib 230 which is subsequently bent to the outside of the) is repeatedly formed.

After the coupling hole 220 and the coupling rib 230 to be formed in the pipe 210 are all processed, the pipe 210 bites the bite chuck 160 and is removed from the support shaft 110 after the heat exchange. Production of the conventional header pipe is completed.

The heat exchanger header pipe manufacturing apparatus of the present invention as described above is formed by sequentially punching and burring in the outer circumferential direction at the hollow portion of the pipe to form a coupling hole and a coupling rib protruding outward from the end of the coupling hole. To make the header pipe.

The heat exchanger header pipe thus manufactured is supported by a coupling rib formed to protrude outwardly from the end of the coupling hole when the cooling tube is inserted into the coupling hole of the header pipe, while more stably wrapping the end of the cooling tube, and welding during welding. It is easy to identify the parts that are not there, thereby improving the efficiency of assembly work.

In addition, the heat exchanger header pipe manufactured by the heat exchanger header pipe manufacturing apparatus of the present invention has a coupling rib formed to protrude to the outside, and thus there is no unnecessary portion when the refrigerant passes. There is an effect that can be expected to increase the function of the heat exchanger and to extend the life due to the smooth flow.

Claims (8)

A punch 120 having a cut portion 121 and a burring portion 122 at an end portion of the support shaft 110 into which the pipe 210 is inserted and supported is lifted and coupled by an elevating means 130 so that the punch 120 When the) rises, the cutting part 121 of the punch 120 primarily punches while pressing the inner surface of the pipe inserted and supported by the support shaft 110 to the outside to form a coupling hole 220, followed by the punch 120. As the burring portion 122 of the) enters the perforated coupling hole 220, the inlet of the coupling hole 220 is expanded while expanding to the outside of the pipe, and the coupling is continuously bent out of the pipe at the inlet of the coupling hole 220. An apparatus for manufacturing a heat exchanger header pipe, characterized in that the rib 230 is formed. According to claim 1, One end of the support shaft 110 is fixedly coupled to the support block 140, the support block 140 is fixedly disposed on one side of the base 150, the other of the base 150 The heat exchanger header is characterized in that a side chuck 160 for holding and fixing a pipe inserted into the support shaft 110 is installed to be transported in a horizontal direction along the base 150 by the transfer means 170. Pipe manufacturing equipment. According to claim 1, The lifting means 130 is a guide hole 131 is formed in the support shaft 110, the punch 120 is inserted into the front end of the support shaft 110 to be elevated. The extraction hole 132 is formed to communicate with the guide hole 131 orthogonal to each other, the push back rod 180 is slidably coupled to the guide hole 131 of the support shaft 110, the push back rod An inclined guide surface 181 and an inclined sliding hole 123 are formed on the front end of the 180 and the lower side of the punch 120 so as to be slidably coupled to each other, and the inclined guide surface 181 and the inclined sliding hole 123 are formed. The sliding slide hole 181a and the engaging slide protrusion 123a which are engaged to be slidably engaged with each other are respectively formed, and the piston of the cylinder 133 which is operated by pneumatic or hydraulic pressure is formed at the rear end of the pushback rod 180. Characterized in that (133a) is combined in a straight line Header pipe manufacturing apparatus for heat exchangers. The slide of claim 2, wherein the conveying means (170) has a plurality of rails (171) arranged horizontally and parallel to the upper side of the base (150), and the rail (171) is coupled to the bite chuck (160). Heat exchanger header pipe manufacturing apparatus, characterized in that the transfer block having a coupling hole (172a) is coupled to be configured. The guide bar 174 having a plurality of ratchet holes 174a on an upper surface of the base 150 is disposed to be parallel to and adjacent to the rail 171, and guided to the transfer block 172. Apparatus for producing a heat exchanger header pipe, characterized in that the latch 175 is terminated in the ratchet hole (174a) of the bar 174 is rotatably coupled. According to claim 1, The holder is provided with a plurality of holders 112, the diameter of each of which is differently formed according to the change in the diameter of the pipe inserted into the support shaft 110 to be coupled to the outer periphery of the support shaft 110 Header pipe manufacturing apparatus for heat exchangers, characterized in that configured to be. The method of claim 3, wherein the pushback rod 180 is separated into a lifting rod (180-1) and a transfer rod (180-2) having an inclined guide surface 181, the lifting rod (180-1) And a transfer rod (180-2) is configured to be separated from each other by a screw coupling is configured heat exchanger header pipe manufacturing apparatus. The punch 120 having the cutting portion 121 and the burring portion 122 sequentially formed therein is supported by inserting the pipe 210 into the support shaft 110 to be lifted and lowered by the lifting means 130. 1) by raising the first cutting portion 121 of the punch 120 while pressing the inner surface of the hollow portion 240 of the pipe 210 to the outside to form a coupling hole 220, and subsequently the punch 120 As the burring portion 122 of the) enters the drilled coupling hole 220, the opening of the coupling hole 220 is pushed to the outside of the pipe 210 to be expanded, thereby expanding the outside of the pipe 210 at the inlet of the coupling hole 220. Header pipe for heat exchanger, characterized in that the coupling rib 230 is formed to be formed.