KR102539824B1 - Curling molding apparatus of the boiler stack - Google Patents

Abstract

The present invention relates to a boiler flue curling molding apparatus for curling and shaping the tip of a boiler flue, and more particularly, while moving the left and right clamps 20 and 20' opposite to each other on both sides of the base block, the boiler flue 2 is formed. The mold means 60, which clamps and moves horizontally back and forth in the pressure cylinder 40, presses and operates the front end of the boiler flue to form curling, the mold means being inserted into the boiler flue and supporting the front of the support block 61 supported. Since the molding block 65 that forms the molding groove in the coiling and molding the tip of the boiler flue while operating the elastic pressurization by the buffer spring, the molding mold is uniformly elastically pressed while supporting the inside and outside of the boiler flue. Therefore, it is characterized by providing a uniform and excellent molding quality compared to the prior art.

Description

Boiler flue curling molding apparatus {Curling molding apparatus of the boiler stack}

The present invention relates to a boiler flue curling molding apparatus for curling and shaping the tip of a boiler flue, and more particularly, to a boiler flue curling which performs curling by pressing a molding mold while supporting the inside and outside of the boiler flue. It is about molding equipment.

As is well known, a boiler is a type of heating device and is a device that performs heating using a heat source obtained by burning raw materials such as gas or oil.

Such a boiler is used to discharge combustion gas as a heat source to the outdoors by connecting a communication pipe to the boiler body and to introduce outdoor or indoor air into the boiler body.

The boiler flue is manufactured in a cylindrical shape using a stainless material, etc., but the boiler flue is used to be partially manufactured and then connected to each other since the entire boiler flue cannot be manufactured integrally.

In such a conventional boiler flue connection structure, the tip of the boiler flue is expanded or reduced, inserted and coupled to overlap each other, and then the overlapped portion is joined. It is not made excellently, and as a result, there was a problem such as leakage of exhaust gas.

In addition, after the tip of the boiler flue is curled by a curling machine, the curling portion of the boiler flue to be connected to each other is placed opposite to each other, and the curling portion is banded and joined by a coupling ring. In this case, If the curling portion at the tip of the boiler communication is not uniformly curled, the sealing is not performed well, which causes problems such as leakage of exhaust gas.

The above conventional boiler flue coring machine clamps the outside of the boiler flue with a clamp, and then presses the forming mold so that the tip of the boiler flue is inserted into the forming groove of the forming mold and curled to form a curling forming part.

However, since the above conventional coring machine supports only the outside of the boiler flue by the clamp, the inside of the boiler flue is hollow and there is a very high risk that the cross-sectional shape of the flue will be deformed by the pressing force of the clamp or the pressing force of the molding mold. There was a problem in that the tip of the boiler flue could not be formed by constant curling because it could be deformed by pressure impact during pressure molding of the mold. That is, the quality of the curling molded part of the boiler flue is poor, and there is a problem such as leakage of exhaust gas due to poor sealing during connection construction of the boiler flue.

Patent Publication No. 10-2022-0120333 (August 30, 2022) Registered Utility Model No. 20-0202902 (August 31, 2000) Registered Utility Model No. 20-0150944 (April 12, 1999)

The present invention was invented to solve the various problems of the prior art, and the molding quality is uniform and excellent because the molding quality is uniform and excellent because it is formed by curling by pressurizing the molding while constantly moving the molding mold back and forth while supporting the inside and outside of the boiler flue. Its purpose is to provide

The present invention includes a base block forming a left and right moving space therein; Left and right clamps facing each other on both sides of the left and right moving spaces of the base block and forming semicircular mounting grooves so that boiler communication is inserted therein; Left and right clamping cylinders installed on the left and right sides of the base block to clamp the boiler communication by moving the left and right clamping in opposite directions by rod expansion and contraction; a pressure cylinder installed in front of the base block; It is characterized in that it is composed of a guide block connected to the front of the rod of the pressurizing cylinder and horizontally moving forward and backward along the rail, and a mold means coupled to the front of the guide block and performing a forward and backward pressing operation while curling and shaping the tip of the boiler flue.

According to the present invention, the mold means includes a rod-shaped support block inserted into the boiler communication and supporting and operating the inside of the boiler communication when clamped by left and right clamps, and a rod-shaped support block installed at the rear of the support block and the front end of the boiler communication outside the front. Composed of a molding block that forms a molding groove for curling molding, the molding block protrudes a recessed part in the center of the front and a shaft rod with a stepped spiral part formed at the tip at the center of the recessed part, and the support block is a molding block in the center of the rear Forming a protrusion inserted into the main part of the protrusion, a spring insertion groove in the center of the protrusion, and a shaft hole into which the shaft rod is inserted in the center of the spring insertion groove, and the spiral portion of the shaft rod in a state in which the buffer spring is inserted into the spring insertion groove inside the support block. It is characterized in that it is configured to curl and mold the tip of the boiler flue while the molding block is elastically moved back and forth by the pressurizing cylinder by fastening and coupling the support nut to.

According to the present invention, a sensing protrusion is protruded from the side of the guide block, and front and rear detection sensors are installed to detect forward and backward movement of the sensing protrusion in front and rear directions of the sensing protrusion, so that the front and rear operating distance of the mold means by the pressurizing cylinder is installed. Its feature is that it is configured to control.

In the present invention, the boiler flue is clamped while moving the left and right clamps oppositely on both sides of the base block, and the mold means for horizontally moving back and forth in the pressure cylinder pressurizes the tip of the boiler flue while forming the curling, wherein the mold means is the boiler The molding block that forms the molding groove in front of the support block that is inserted into the flue and supported by the shock absorber spring pressurizes the tip of the boiler flue while curling and shaping the tip of the boiler flue. Because it is molded by constant elastic pressing, the molding quality is uniform and has excellent effects compared to the prior art.

That is, when connecting and constructing the boiler flue manufactured according to the present invention, the airtightness is more excellent than in the prior art.

1 is a side view showing a molding apparatus of the present invention.
Figure 2 is a plan view of Figure 1;
Figure 3 is a front view of Figure 1;
Figure 4 is a front cross-sectional view showing the mold means of the molding apparatus of the present invention.
5 and 6 are front or rear exploded perspective views of FIG. 4;
7 and 8 are cross-sectional views showing the molding process of the molding apparatus of the present invention.
Figure 9 is a cross-sectional view showing the main part of the molding process by the mold means of the molding apparatus of the present invention.

Hereinafter, a preferred embodiment of the present invention described above will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 9, the boiler flue curling molding apparatus of the present invention includes a base block 10, left and right clamps 20 and 20', left and right clamping cylinders 30 and 30', and a pressurizing cylinder ( 40), a guide block 50, and a mold means 60, the tip of the boiler flue 2 is curled.

The base block 10 is formed in a rectangular shape and formed by forming a left and right moving space portion 11 penetrating in the front and rear directions therein.

The left and right clamps 20 and 20' are installed facing each other on both sides of the left and right moving space 11 of the base block, and are configured by forming a semicircular mounting groove 21 so that the boiler communication 2 is inserted inside.

At this time, guide rails 25 and guide grooves 26 are formed in correspondence with the bottom of the left and right movement space 11 of the base block and the bottom of the left and right clamps 20 and 20', so that the left and right clamps guide the left and right movement constantly. configure it so that

The left and right clamping cylinders 30 and 30' are coupled to the left and right sides of the base block to clamp the boiler flue 2 by moving the left and right clamping cylinders 20 and 20' to the left and right by the expansion and contraction of the rod 32. make up

The pressure cylinder 40 is configured to be fixed to a separate mounting bracket 45 at a central position in front of the base block.

The guide block 50 is connected to the front of the rod 41 of the pressing cylinder and horizontally moves forward and backward along the rail 52 by extension and contraction of the rod.

And the mold means 60 is coupled to the front of the guide block 50 and is configured to curl and mold the front end of the boiler flue 2, which is crimped by the left and right clamps, while pressing back and forth.

The mold means 60 is a rod-shaped support block 61 installed in the center of the left and right moving space of the base block and inserted into the boiler flue 2 to support the inside of the boiler flue when clamped by left and right clamps, It is installed at the rear of the support block and consists of a forming block 65 forming a forming groove 66 in a ring-shaped structure for curling the front end of the boiler flue on the outside of the front.

At this time, the molding block 65 protrudes a shaft rod 68 with a stepped spiral part 68a formed at the front center of the recess 67 and the center of the recess, and the support block 61 is molded at the rear center. A protrusion 62 inserted into the main part of the block, a spring insertion groove 63 in the center of the protrusion, and a shaft hole 63a into which the shaft rod 68 is inserted are formed in the center of the spring insertion groove, and the spring insertion inside the support block With the buffer spring 64 inserted into the groove 63, the support nut 69 is fastened and coupled to the spiral part 68a of the shaft rod, and the molding block 65 is moved forward and backward by the pressure cylinder, while the front end of the boiler flue It is configured for curling molding.

In addition, a sensing protrusion 55 is protruded from the side of the guide block 50, and front and rear detection sensors 56 and 57 are installed to detect the forward and backward movement of the sensing protrusion in the lateral direction of the sensing protrusion and pressurize it. The front and rear operation distance of the mold means is controlled by the cylinder, but the front and rear operation distance of the mold means is formed by the distance between the front and rear detection sensors.

That is, by adjusting the separation distance of the front and rear detection sensors 56 and 57 according to the size of the boiler flue curling molding part 3 formed in the molding groove 66 of the molding mold, It is configured to mold while controlling the pressing operation distance of the mold means 60 to be different.

The front and rear detection sensors 56 and 57 are configured such that the rear detection sensor is fixed in the support bracket 58 and the front detection sensor is fixed after adjusting the forward and backward movement along the long hole.

As non-explained numerals, 65a denotes an assembly thread at the rear of the molding block, 72 an assembly nut, and 70 a washer.

Next, let's take a look at the operation and action of the present invention configured as above.

First, the boiler flue 2 is inserted into the support block 61 of the mold means located in the center of the left and right moving space 11 of the base block 10.

At this time, the front end of the boiler flue 2 is inserted into the molding groove 66 formed in a ring-shaped structure in front of the molding block 65 of the mold means.

In this state, the rods of the left and right clamping cylinders 30 and 30' installed on both sides of the base block are advanced so that the left and right clamps 20 and 20' move oppositely to the inside of the left and right moving space 11. do.

In this way, while the left and right clamps 20 and 20' move oppositely inward, the semicircular mounting groove 21 inside the left and right clamps surrounds and clamps the outside of the boiler flue 2.

At this time, during the clamping operation of the boiler flue 2 by the left and right clamps 20 and 20', the inner side of the flue 2 is closely supported by the cylindrical support block 61.

In this state, as the rod of the pressure cylinder 40 is extended, the guide block 50 moves forward horizontally along the rail 52, and the guide block 50 horizontally moves the mold means 60 forward. will be.

In this process, since the support block 61 of the mold means is fixedly supported by the left and right clamps, when the guide block 50 moves forward by the pressure cylinder 40, the molding block 65 of the mold means moves forward. .

In this way, while the forming block 65 moves forward, the tip of the boiler flue 2 is curled and formed in the forming groove 66 of the forming block to form the curling forming part 3.

At this time, the boiler flue 2 has a structure in which the support block 61 is supported on the inside and the left and right clamps 20 and 20' are clamped on the outside, that is, the boiler flue is deformed by the internal and external support structure of the boiler flue. However, shaking is prevented, and molding defects of the curling molding part are prevented.

In particular, in the molding mold 65, the recess 67 in the center of the front is guided to the protrusion 62 of the support block, and the shaft rod 68 in the center of the recess is guided to the shaft hole 63a in the center of the support block to maintain a constant Simultaneously with the forward movement, the shock absorber spring 64 inserted into the spring insertion groove 63 of the support block is elastically compressed to buffer the pressurized impact of the front end of the boiler communication pipe 2.

In addition, in the forming mold 65, the sensing protrusion 55 protruding from the side of the guide block 50 is pressed to a certain length by controlling the operation of the pressure cylinder by the sensing operation of the front and rear detection sensors 56 and 57. It will do.

In this way, the forming mold 65 constantly moves forward, maintains a constant operating distance, and offsets the pressurized impact of the boiler flue to more precisely and uniformly enlarge the curling forming part 3 at the tip of the boiler flue 2. It will be molded.

In this way, when the curling molding of the boiler flue 2 is completed, the left and right clamps 20 and 20' move backward while the rods of the left and right clamping cylinders 30 and 30' on both sides of the base block move backward. It is to release the clamping state of the boiler flue 2 by moving to the left and right.

In this state, the boiler flue 2 is pulled out from the support block 61 of the mold means and separated.

On the other hand, the curing forming apparatus of the present invention is described for boiler flue, but it can be used for curling the flue tip of a cylindrical structure used for devices other than boiler flue, and the degree of simple change in use is the right of the present invention. Note that it belongs to the scope.

10: base block 11: left and right moving space
20,20': left and right clamps 21: mounting groove
30,30': Left and right clamping cylinder 40: Pressing cylinder
50: guide block 52: rail
55: sensing protrusion 56,57: front and rear detection sensor
60: mold means 61: support block
62: protrusion 63: spring insertion groove
63a: shaft hole 64: buffer spring
65: molding block 66: molding groove
67: lower part 68: shaft rod
68a: spiral part 69: support nut

Claims (3)

A base block 10 forming a left and right moving space 11 therein;
Left and right clamps 20 (20') installed on both sides of the left and right moving space 11 of the base block and forming semicircular mounting grooves 21 so that the boiler flue 2 is inserted therein,
Left and right clamping cylinders 30 and 30' installed on the left and right sides of the base block to clamp the boiler flue 2 by moving the left and right clamping cylinders 20 and 20' in opposite directions by rod extension and contraction,
A pressure cylinder 40 installed in front of the base block;
A guide block 50 connected to the front of the rod of the pressurizing cylinder and horizontally moving back and forth along the rail 52, and a mold coupled to the front of the guide block and performing curling and molding the tip of the boiler flue 2 while pressing back and forth. In the boiler flue curling forming apparatus composed of means 60,
The mold means 60 includes a rod-shaped support block 61 that is inserted into the boiler flue 2 and supports and operates the inside of the boiler flue when clamped by left and right clamps, and is installed at the rear of the support block and at the front outside the boiler. It consists of a molding block 65 forming a molding groove 66 for curling the tip of the communication pipe,
The molding block 65 protrudes a shaft rod 68 with a stepped portion 68a at the front end of the recess 67 and the center of the recess at the center of the front, and the support block 61 is a molding block at the center of the rear. A protrusion 62 inserted into the main part of the protrusion 62 and a spring insertion groove 63 in the center of the protrusion and a shaft hole 63a into which the shaft rod 68 is inserted in the center of the spring insertion groove, and the spring insertion groove inside the support block With the buffer spring 64 inserted in (63), the support nut 69 is fastened and coupled to the spiral part 68a of the shaft rod, and the molding block 65 is moved forward and backward by the pressurizing cylinder, while the tip of the boiler flue Boiler flue curling molding apparatus, characterized in that configured to form a curling. delete According to claim 1,
A sensing protrusion 55 is protruded from the side of the guide block 50, and front and rear detection sensors 56 and 57 are installed to detect forward and backward movement of the sensing protrusion in the lateral direction of the sensing protrusion, so that the pressure cylinder Boiler flue curling molding apparatus, characterized in that configured to control the front and rear operating distance of the mold means by the.

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