KR100524191B1 - Vise helping for brazing - Google Patents

Abstract

The present invention relates to an object holding device (a kind of vise) used in the process of brazing an object to be brazed, and more particularly, when brazing by spraying coolant directly onto a valve when brazing an object to be brazed, particularly a service valve. This invention relates to a fixing device which introduces means for air cooling to solve the problem of deterioration and the problem that the brazed valve is corroded by water.

The fixing device for brazing assistance according to the present invention is arranged on the base 10 and includes a receiving portion for the brazing object, cooling air outlet holes 23b and 23c which are opened toward the receiving portion, A pair of driven holes 20 in which cooling air inlet holes 23a are formed to allow air to flow into the cooling air outlet holes 23b and 23c; And it comprises a variable means for engaging the follower 20.

Description

Fixture for Brazing Aids {VISE HELPING FOR BRAZING}

The present invention relates to an object holding device (a kind of vise) used in the process of brazing an object to be brazed, and more particularly, when brazing by spraying coolant directly onto a valve when brazing an object to be brazed, particularly a service valve. This invention relates to a fixing device which introduces means for air cooling to solve the problem of deterioration and the problem that the brazed valve is corroded by water.

The service valve V shown in FIG. 2 is mounted on the side of an outdoor unit A equipped with an air conditioner, a compressor for a so-called air conditioner and a heat exchanger, as shown in FIGS. 1A and 1B. As shown in the enlarged view of FIG. 1B, the mounting plate A1 is first mounted on the outdoor unit A, and then the valve V is mounted on this plate A1.

As it can be seen in Figure 1b and Figure 2, the second supply portion (50b) of the valve (V) main body 50, the refrigerant pipe 51 connected to the flue exchanger outlet of the outdoor unit (A) and the compressor inlet pipe brazing. Are connected. In FIG. 2, reference numeral B denotes a brazing part of the refrigerant pipe 51 and the valve body 50.

The first supply part 50a of the valve V main body 50 is connected to a circulation pipe drawn out from the indoor unit. The main body 50 has a spindle Sv insertion portion 50c and a refrigerant injection portion 50d, and the core C3 is inserted into the refrigerant injection portion 50d. The core C3 is opened when the refrigerant is injected, and the refrigerant injected once is not discharged.

When the spindle Sv fitted to the spindle insertion part 50c is rotated, the flow path of the 1st supply part 50a and the 2nd supply part 50b is switched. Caps C1 and C2 are provided at the spindle insertion portion 50c and the refrigerant injection portion 50d to prevent foreign substances from entering the core C3.

Reference numeral 50e denotes a bracket fixed to the outdoor unit mounting plate A1.

The method of coupling the refrigerant pipe 51 to the main body 50 in the service valve V having such a structure is a brazing method using high frequency and a welding rod (generally using BCuP-3).

Heat is generated during the brazing process, which melts the various packings provided in the valve V, or causes the packing to be released from its original position during the shrinking and expanding process, thereby causing the failure of the completed valve V. do.

Therefore, the important thing in the brazing joining of the valve V main body 50 and the refrigerant pipe 51 is to cool the generated heat.

In the conventional brazing heat cooling method, the valve V is fixed around the bracket 50e, and the first supply part 50a, the spindle inlet 50c, and the coolant inlet 50d of the main body 50 of the valve V are fixed. And direct cooling water injection (hereinafter referred to as 'direct water cooling') to directly spray the cooling water to the lower portion of the bracket 50e.

 The reason for sealing the first supply part 50a, the spindle insertion hole 50c, and the refrigerant injection hole 50d of the valve V is to prevent the coolant from flowing into the valve and corrosion of the valve. This sealing process complicates and delays the valve production process.

In addition, when the cooling water is sprayed without sealing, it is necessary to dry the cooling water quickly in order to prevent corrosion, which complicates the process and increases manufacturing costs.

In addition, the device for fixing the valve in the brazing process is not stable, there was an inconvenience that the user must move around in the brazing process.

The present invention has been made to solve the problem of the conventional direct brazing object, in particular 'direct water cooling' to cool the heat generated in the service valve brazing process, the fixing device according to the present invention

First, in addition to the service valve, it provides a device that can fix the object when brazing the general purpose brazing object, and introduces a means for cooling the brazing heat by air cooling instead of water cooling to simplify the valve manufacturing process. To achieve,

Second, to complement the air-cooled means, to introduce a heat-conductive 'indirect' water-cooled means, rather than the conventional 'direct' water-cooled means,

Thirdly, to introduce a means to facilitate the locking and unlocking of the fixing device to the fibrous object,

Fourth, an object of the present invention is to introduce a means for rotating the fixing device of the present invention and a rotation angle display means on the base to enhance the convenience of the brazing operation.

In order to achieve the above object, a fixing device for brazing assistance according to the present invention is arranged on a base, and includes a receiving portion for a brazing object, a cooling air outlet hole directed toward the receiving portion, and the outlet hole. A pair of driven holes in which an inlet hole is formed to allow air to flow therein; And it comprises a variable means for engaging the follower.

Hereinafter, a fixing device for brazing assistance of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the present specification and drawings denote members having the same function.

The fixing device of the present invention can be used as a general purpose vise for a brazing object. Hereinafter, the fixing device for the service valve V of FIG. 2 is a representative example of the brazing object for convenience of description. Explain mainly.

First, referring to FIG. 3, the fixing device of the present invention includes a base 10, a driven tool 20 respectively installed on the base 10, a fastener 30 and a driving tool (variable means for moving the driven ball). 40). This configuration is to ask the service valve (V) of Figure 2 is similar in function to the general vise (vise).

The core of the present invention, in contrast to the prior art, is interlocked and opened according to the operation of the variable means on the base 10 (which is referred to herein as the "occlusal") to align and release the service valve. Iii) means for inflow of cooling air formed in the driven hole 20. Of these means, only cooling air outlet holes 23b and 23c are seen in FIG.

3 and 4, when the pair of driven balls 20 are engaged with each other according to the operation of the lever 43 of the driving device 40, the driven holes 20 have respective portions of the valve V fixed thereto. A receiving portion is formed. That is, the receiving portion 21a for the bracket 50e of the valve V shown in FIGS. 1A and 2, the receiving portion 21b for connecting the first supply portion 50a and the refrigerant inlet 50d, and the spindle. That is the receiving portion 21c for the inserting portion 50c. Such receptacles may be variously modified according to the shape of various valves, and may be various shapes for general purpose brazing objects.

In particular, a plurality of cooling air outlet holes 23b are formed in the valve accommodation portion 21b. The hole formed in the accommodating portion 21c is also the cooling air outlet hole 23c, and the holes 23d and 23e on the side face the side of the accommodating portion 21b opened for processing the inside of the driven hole 20. It is a screw hole for screwing the plate 23f for blocking. Plate 23f should also be a pair to fit a pair of follower 20, but only one is shown for convenience.

In FIG. 3, the coupling of the guide rod 31 and the follower 20 of the fixture 30 is performed in such a manner that the guide rod is fitted into the through hole 20a (see FIG. 4) of the follower.

In FIG. 3 and FIG. 4, reference numeral 20b is a slot into which the lever 43 of the driving mechanism 40 can be inserted.

Next, referring to FIGS. 5A and 5B, which are views of the fixing device from which one of the driven holes 20 is removed, three holes are drilled in the side surface of the driven hole 20.

One of the holes below is the cooling air inlet 23a, and as shown in the sectional view of the follower 20 of FIG. 6A (a diagram of a portion of the cooling air inlet 23a), the cooling air inlet 23a. The air supplied from the nozzle N of the inserted air compressor (not shown) is discharged to the cooling air outlet hole 23b. The discharged air is in the state of being clamped by the fixing device of the present invention to cool the valve body 50 brazed with the refrigerant pipe.

5A and 5B, the upper two holes are the coolant inlet 25a and the coolant outlet 25b for the coolant to complement the air cooling method of the service valve. In this manner, the coolant does not cool the 'direct' valve but rather the follower 20, so that the cooled follower 20 cools the valve by heat conduction. This may be referred to as 'indirect water cooling' as compared to the conventional 'direct water cooling'.

6B is a cross-sectional view of the cooling water inflow hole 25a and the cooling water outflow hole 25b, and the cooling water flowing into the cooling water inflow hole 25a passes through the cooling water jacket 25, which is an internal passage, to the cooling water outlet hole 25b. You will exit. The coolant jacket 25 may be in various forms, but the illustrated one is simply a form in which two passages are connected at the rear. Reference numeral 25c, which can also be seen in FIG. 5B, is later blocked by machining holes joined by drilling two passages. The shape of the cooling water jacket 25 may be modified in a larger and wider variety, but in the end, in view of the convenience of manufacturing, the illustrated method is simple in process.

The cooling air inlet 23a, the cooling water inlet 25a, the cooling air outlet 23b, and the cooling water outlet 25b should be formed in all of the pair of driven holes 20. The cooling air and the cooling water supply means In order to simplify the piping relationship between the inlet and outlet holes, the cooling air and the coolant entering the one fixture pass through the cooling air outlet hole 23b and the cooling water outlet hole 25b, respectively. It is preferable to enter the cooling air inlet (23a) and the cooling water inlet (25a) of the circulated air and to be consumed (in the case of air) or recovered again (in the case of cooling water).

Cooling air transfer between the driven holes 20 may be made through the processing hole 23e described in FIG. At this time, the hole (23e) is in communication with the cooling air inlet hole (23a), it is used for air circulation. However, since the cooling air is discharged to the plurality of cooling air outlet holes 23b and the supply pressure is lowered, the cooling air may not be sufficient to serve as cooling air that enters the follower through one follower 20, which is a large volume of air. This can be solved by using a compressor.

Circulation of the coolant may be possible by interconnecting the coolant inlet 25b and the coolant inlet 25a of the two followers 20, but both of the coolant outlets 25b of the two followers 20 are closed. The water circulated in the cooling water jacket 25 is extracted from the processing hole 25c (FIG. 5B) described above, and piped to enter the cooling water inlet 25a hole of the other follower. It is also possible in such a way that is discharged into the processing hole 25c.

Next, the variable means for engaging the follower 20 will be described. The variable means may be advanced along a thread like a normal vise. However, in the present invention, a variable means for engaging the driven mouth in a one-touch form is introduced in the fixing device, omitting the operation of rotating the control lever of the conventional vise in a complicated manner.

As shown in FIG. 5A, first, the fixture 30 is positioned above the base 10, and has an occlusal action in which two driven members 20 are moved closer and closer to the fixture 30. The fixture 30 is coupled to the guide rod 31 connected to the follower 20.

As shown in FIG. 7A, the fixture 30 includes the rotation shaft S. As illustrated in FIG. The drive tool 40 for the mating of the follower 20 is arrange | positioned centering on this rotating shaft S. As shown in FIG. First, the rotating plate 41 moving in accordance with the left and right movement of the lever 43 is arranged coaxially with the rotating shaft S. The rotating plate 41 is disc shaped.

As can be seen in FIG. 7B, which is a bottom view of the follower 20, a guide groove 27 is formed on the bottom thereof, and the driving pin 27 is fixed to the rotating plate 41 in FIG. 5A. 45 is inserted.

Referring to FIG. 7C, operations related to the rotating plate 41, the lever 43, the driving pin 45, and the guide groove 27 of the follower 20 are applied to the rotating plate 41 by applying a force to the lever 43. When 41) is rotated about the rotation axis S in the direction of the arrow, the shortest distance between the driving pins 45 approaches d1 to d2. Accordingly, the driving pin 45 is moved from the center of the guide groove 27 on the bottom of the follower 20 to the end, and the follower 20 is constrained by the guide rod 31 so that the position deviation is impossible. Follower 20 is moved closer to the guide rod 31 along. When the lever 43 is turned in the opposite direction to the arrow, the distance between the driving pins 45 is increased again from d2 to d1, and thus the driven holes 20 are also separated from each other.

As shown in FIG. 7A, the occlusal position of the follower 20 for fixing the service valve is a position where the valve is bitten by a spring plunger 13 provided between the drive 40 and the base 10. (The state at the distance d2 in FIG. 7C) and the position apart from each other as far as possible (the state at the distance d1 in FIG. 7C).

That is, as shown in FIG. 7A, when the groove 41e of the bottom surface of the rotating plate 41 coincides with the spring plunger 13 by the rotation of the rotating plate 41, the spring plunger 13 carried by the spring (not shown) is carried out. ) Will stick out and fit in the groove 41e. Accordingly, the rotary plate 41 is not separated from the position where the spring plunger 13 and the groove 41e are coupled to each other unless a strong force is applied to the lever 43. The coupling position of the spring plunger 13 and the recess 41e corresponds to two positions related to the distances d1 and d2 of FIG. 7C.

The spring plunger 13 may have a structure provided in the rotating plate 41 instead of the base 10.

In FIG. 7a, the guide rod 31 of the fixture 30 for the follower 20 is in the form of a cylinder, so that the piston 31b moves in the cylinder housing 31a according to the operation of the lever 43 of the drive mechanism 40. As it enters and exits, the follower 20 may be in the form of bite.

In particular, the cylindrical guide rod 31 is suitable for supplementing the operation of the drive mechanism (40). That is, as shown, the spring 31c is installed on the piston 31b so that the occlusal motion of the follower 20 is compensated for by the elastic force of the spring 31c.

If the length of the spring 31c in the pressurized or untensioned steady state is equal to or longer than d1 in FIG. 7c, follower 20 in the state of biting the valve (this is the spring plunger 13) If the lever 43 is turned in the opposite direction to the arrow, the follower 20 will be opened to the position associated with the distance d1 by the elastic force of the spring 31c.

If the length of the spring 31c in the steady state is equal to or shorter than the length associated with the distance d2 of FIG. 7C, the driven hole 20 in the open state (this position is also fixed by the spring plunger) When the lever 43 is rotated in the direction of the arrow, the retracting force of the spring 31c causes the follower 20 to be lifted to a position related to the distance d2 to bite the valve.

The spring 31c can have both the structure arrange | positioned at the outer peripheral surface or the inner peripheral surface of the piston 31b. Figure 7a is a form provided with a spring on the outer peripheral surface of the piston.

In addition to the spring plunger 13, the rotation angle of the rotation plate 41 of the driving hole 40 may be limited by the lever 43 at both ends of the slot 20b formed on the bottom surface of the follower 20, as shown in FIG. 3. It might be a way to hit and stop.

In addition, as shown in Figure 8a, for the left-handed and right-handed, or for the convenience of the operator's work position, the coupling of the lever 43 and the rotating plate 41 of the drive mechanism 40 is screwed, Coupling may be made at four positions across the slot 20b of the follower 20. That is, four screw holes 41a, 41b, 41c, and 41d are formed in the rotating plate 41, and if necessary, the threaded portion 43a of the lever 43 is fitted into one of the four screw holes. In FIG. 5A, one of the threaded holes 41b of the rotating plate 41 can be seen.

Moreover, in this invention, the means which rotates the direction of a valve by rotating the fixing apparatus of this invention, without an operator moving, introduces the means which can carry out a brazing operation. This rotation means is because the bending direction of the pipe in the brazing process of the valve body and the pipe is required to rotate the fixing device as necessary.

That is, in FIGS. 7A and 8B, the driven plate 20, the fixture 30, and the rotating plate 41 of the driving mechanism 40 may rotate on the base 10 about the rotation axis S. FIG. The rotational position can be set by an appropriate stopper.

In addition, as shown in FIG. 8, the base 10 is provided with an angle display part, and the fixing tool 30 is provided with an arrow 33 for indicating an angle, so that the rotation angle of the fixing device can be precisely controlled. The angle display portion is not engraved on the base 10 for the convenience of assembly, it is preferable that it is a separate angle display plate (11).

The fixing device having the above-described configuration is used to stabilize the service valve and cool the valve in the welding process as follows.

First, as shown in FIG. 8B, the operator sets the fixing device on the base 10 about the rotational axis S while checking the angle display plate 11 and the arrow 33 according to a convenient position. The rotated state is fixed with a stopper (not shown).

Subsequently, in FIG. 5A, the nozzle (N, see FIG. 6A) of the air compressor is inserted into the cooling air inlet hole 23a of the follower 20, and a cooling water source (water supply pipe or pump piping) is provided in the cooling water inlet hole 25a. Connected to the pipe.

At this time, the nozzle (N) is coupled to only the cooling air inlet hole (23a) of one follower, as described above, the cooling air is discharged to the cooling air outlet hole (23b) and the remaining air is processed. It can be piped so as to be discharged to the cooling air outflow hole 23b and the cooling air inflow hole 23a via the hole 23e (see FIG. 4) and through the processing hole 23e of the other driven hole.

In addition, when all the cooling water outlet holes 25b are closed with respect to the cooling water, the cooling water introduced into the cooling water inlet hole 25a of the one-type copper ball 20 passes through the cooling water jacket 25, and then the processing holes shown in FIG. The pipe can be piped so that the cooling water can be discharged to the cooling water inflow hole 25a via the processing hole 25c of the other driven port via 25c).

Next, as shown in FIG. 3 and FIG. 7A, the valve V is positioned at the valve receiving portions 21a, 21b, 21c of the follower 20, and the driving hole 40 in the arrow direction as shown in FIG. 7C. When the lever 43 is rotated, the driving pin 45 moves to the position of the distance d2 in accordance with the rotation of the rotary plate 41, and the follower 20 is close to each other to ask the valve (V). The locking position is fixed by the action of the spring plunger 13 of Fig. 7a.

2 and 7a, the refrigerant pipe 51 is placed in the second supply part 50b of the valve V, and the pipe 51 and the valve body 50 using a high frequency welder and a welding rod (e.g., BCuP-3). Braze).

In the brazing process, the air compressor and the cooling water source are operated to cool the valve so that the cooling air and the cooling water are supplied to the driven hole 20. Cooling air is discharged to the cooling air outlet hole 23b of the follower 20, and the cooling water circulates through the cooling water inlet 25a, the cooling water jacket 25, and the cooling water outlet 25b of the follower 20. The follower 20 is cooled, and the cooled follower conducts cooling of the valve V by conduction.

After brazing is completed, in FIG. 7C, the lever 43 is rotated in the opposite direction to the arrow to release the pair of follower 20. The unlocked position is also fixed by the spring plunger 13.

As described above, the force of the operator required to turn the rotary plate 41 by applying a force to the lever 43 may be supplemented by a spring 31c provided in the piston 31b of the guide rod 31.

Immediately after brazing, when the measured temperature of the valve body 50 to which the refrigerant pipe 51 is coupled is about 60 ° C., various temperature-sensitive parts (eg, packing materials) contained in the valve V are not damaged. As a result of the experiment through the fixing device of the present invention, the measurement temperature immediately after the brazing of the brazed valve V showed a temperature of 99.9% or more and 60 ° C or less.

As described above, the fixing device for the brazing aid according to the present invention

First, the entrance and exit holes for the air-cooled cooling method, not 'direct water cooling', are introduced into the fixing device that can bite the brazing object, eliminating the inconvenience of obstructing the valve hole in the object, especially the service valve brazing process. To prevent the risk of corrosion of the valve by direct water contact with objects, the process is simplified and the product quality is improved.

Second, the cooling water circulation means (inlet and outlet and jacket) required for the 'indirect water cooling' of the heat conduction method can be introduced in the follower of the fixed device to achieve air cooling.

Third, to improve the user's convenience through the one-touch method of the drive mechanism for the engagement of the driven ball, and through the diversification means of the guide rod, the spring plunger, the lever having a spring to compensate for this;

Fourth, the fixing device is to be rotated about the rotation axis (S) on the base, and the means for measuring the rotation angle and the worker's copper wire through the fixing means of the rotation position.

The fixing device of the present invention described above omits the conventionally known technique, but those skilled in the art can naturally infer and deduce this.

In addition, although each feature of the present invention has been described in a limited manner with the representative of the service valve among the fibrous objects with reference to the drawings, the fixing device of the present invention is a conventional vise air cooling means of the present invention (inlet hole and It is also possible to achieve a method by introducing a cooling air (outlet hole ejected in the valve direction), and those skilled in the art can variously modify and combine the fixing device based on this, in which case such modifications and combinations are in accordance with the spirit of the present invention. It is to be understood that the present invention is to be construed as in accordance with the present invention.

1A and 1B are perspective views illustrating an outdoor unit for an air conditioner in which a service valve is installed;

2 is a cross-sectional view of the service valve,

3 is an overall perspective view of a fixing device according to the present invention;

4 is a perspective view showing a focus on the driven part of the fixing device,

5a and 5b is a perspective view of the fixing device from which one of the follower is separated from different directions,

Figure 6a is a cross-sectional view of the driven hole cut in the cooling air inlet hole,

6B is a cross-sectional view of the follower in which the coolant jacket is cut away;

7A is a schematic view showing a state in which the fixing device of the present invention is arranged around a rotating shaft;

Figure 7b is a bottom view showing the drive pin guide groove portion of the follower,

Figure 7c is a schematic diagram showing the principle that the driven mechanism is engaged with each other by the interaction of the rotating plate and the lever, the fixing pin, the guide groove of the driven device of the variable means of the fixing device,

8A is a schematic top view showing four positions of the lever 43 coupled to the rotating plate of the drive mechanism,

Figure 8b is a plan view highlighting the angle display in the fixing device of the present invention.

<Description of Symbols for Main Parts of Drawings>

V: valve A: outdoor unit

10: Base 11: Angle display

13: spring plunger

20: follower 20a: through hole for guide rod

20b: Slot 21a, 21b, 21c: Valve accommodation portion

23a: cooling air inlet 23b, 23c: cooling air inlet 25a: cooling water inlet 25b: cooling water outlet

25: coolant jacket 27: guide groove

30: fixture S: axis of rotation

31: guide rod 31a: cylinder housing

31b: piston 31c: spring

40: drive hole 41: rotating plate

43: lever 45: drive pin

Claims (11)

Arranged on the base 10, the accommodating portion for the brazing object, the cooling air outlet holes 23b and 23c which are opened toward the accommodating portion, and the cooling air outlet holes 23b and 23c are provided. A pair of driven holes 20 in which cooling air inflow holes 23a are formed to allow air to flow therein; And Fixing device for brazing assistance comprising a variable means for engaging the follower (20). The method of claim 1, Fixing device for brazing assistance, characterized in that the pair of driven holes (20) is formed with a coolant jacket (25) for the coolant that goes through the coolant inlet (25a) to the coolant outlet (25b). The method of claim 2, In order to simplify the pipe, one follower (20) cooling water outlet hole is fixed to the brazing aid, characterized in that connected to the inlet hole of the other follower by the pipe. The method according to any one of claims 1 to 3, wherein the variable means A fixture 30 positioned on the base 10 and connected to the guide rod 31 connected to the follower 20 and including a rotation shaft S; And The driving pin 45 is inserted into the guide groove 27 formed on the bottom surface of the follower 20 is fixed, and rotates according to the operation of the lever 43 about the rotation shaft S of the fixture 30 Fixing device for brazing assistance, characterized in that the drive pin 45 comprises a drive port 40 made of a rotating plate 41 to engage the driven hole 20 as the guide groove 27 moves. The method of claim 4, wherein A spring plunger 13 and a groove 41e into which the spring plunger 13 is inserted are formed between the driving hole 40 and the base 10 to adjust the rotation angle and the fixed position of the driving hole 40. Fixing device for the brazing aid, characterized in that the restriction. The method of claim 4, wherein The guide rod 31 of the fixture 30 for the follower 20 is in the form of a cylinder, so that the piston 31b enters and exits the cylinder housing 31a according to the operation of the lever 43 of the drive mechanism 40. Fixing device for the brazing aid, characterized in that. The method of claim 6, The piston (31b) is provided with a spring (31c), the locking device for the brazing aid, characterized in that the occlusal operation of the follower (20) is complemented by the elastic force of the spring (31c). The method of claim 4, wherein Restriction of the rotation angle of the drive hole 40 is a way that the lever 43 coupled to the drive hole 40 is stopped by hitting both ends of the slot 20b via the slot 20b formed on the bottom surface of the driven hole 20. Fixing device for the brazing aid, characterized in that consisting of. The method of claim 8, The lever 43 and the drive plate rotating plate 41 is coupled to the screw coupling method, the coupling is characterized in that it can be made at the four positions of both ends of the slot 20b of the follower 20 Fixture for assistance. The method of claim 4, wherein The follower (20), the fixture (30), the drive (40) is a fixing device for brazing assistance, characterized in that the rotatable shaft (S) to rotate all over the base (10). The method of claim 10, The base 10 is provided with an angle display plate 11, and the fixing device 30 is provided with an angle indicating arrow 33 so that the angle of rotation can be fixed to the fixing device for brazing assistance, characterized in that .