KR100807274B1 - The forming device and manufacture method for the pipe of automobile air conditioner - Google Patents

Abstract

A drawing device of a pipe for an automobile air conditioner and a drawing method thereof are provided to maximize productivity, market quality and utilization efficiency of a formed part of the pipe by forming a pipe having a thin outer diameter through a drawing process of pressing and drawing the pipe such that a process of forming a pipe having a thin thickness while maintaining inner diameter of the pipe in its original state is conducted in the same line as processes of contracting, beading and expanding the pipe. A drawing device of pipe for automobile air conditioner comprises: a body housing(120) having a drawing dies(110) formed at one side of an inner part thereof, the drawing dies having a pipe-contracting hole(111) into which an outer diameter of a pipe(10) is inserted closely to form a pipe having a thin thickness while maintaining an inner diameter of a formed part of the pipe in its original state; a drawing plug(130) having a catching projection(131) slid into the body housing, a drawing member(132) formed on a front end of one side of the catching projection and inserted into the inner diameter of the pipe, and a fixing part(134) formed on the other side of the catching projection and projected to the outside through the body housing; and a drawing housing(140) having a guide member(141) formed thereon, the guide member being inserted slidingly into the body housing by fixing the fixing part of the drawing plug.

Description

The air conditioner pipe drawing molding apparatus and the method of forming the same {the Forming device and Manufacture method for the pipe of automobile air conditioner}

The present invention relates to an automobile air conditioner pipe drawing molding apparatus and a molding method thereof.

In general, air conditioners are installed to create a comfortable and cool environment when driving a car in summer. This structure is driven by V-belts by the engine, and is installed in front of the radiator by making refrigerant of low temperature and low pressure gas into high pressure gas and cooling fan of the vehicle. By condensing the refrigerant in the high-temperature, high-pressure gas state to a liquid refrigerant of high-temperature and high-pressure, the compressor and the receiver dryer that stores the refrigerant to absorb the moisture contained in the refrigerant to smoothly supply the refrigerant between the high temperature and low pressure Expansion valve which inserts the pressure of liquid refrigerant and blower's operation to take heat away from the air while the mist of refrigerant turns into gas and passes through the evaporator tube. It is used by forming an evaporator.

As shown in FIG. 1, the automobile air conditioner pipe inserts a pipe 10 into one side of the joint block 20 and forms a molded part 18 having a diameter expanded at one end of the air conditioner pipe 10. The molding part 18 is fixed to the joint block 20 by forming a locking part 14 so that the pipe 10 is not separated from the joint block 20.

In order to form the molded part 18 at one side end, the conventional pipe 10 first rotates the pipe 10 by a work such as a lathe to turn an outer diameter of one side end at which the molded part is formed, and the thickness thereof is a first process. It is thinly formed through the phosphorus turning process.

In addition, when the thickness of one end portion is thinly formed through the turning process, which is the first process, the pipe is thinly formed into the inside of the tube forming apparatus 200 to reduce the diameter of the front end portion through the condenser tube process, which is the first step of the second step of press forming. Pressing the shaft tube forming apparatus 200 so that one end of the shaft 10 is inserted, one side end of the pipe 10 is inserted into the shaft tube forming apparatus 200 to reduce its diameter.

As such, when the diameter is reduced, the bead molding apparatus is inserted in the state in which the one end portion of the reduced diameter is inserted into the bead molding apparatus 300 so as to form the locking portion 14 at the one end portion of which the diameter is reduced so as not to be separated from the joint block 20. The locking portion 14 is formed by pressing 300.

Then, the expansion punch 410 is pressed into the reduction diameter by pressing the expansion punch 410 while the pipe is inserted into the expansion molding apparatus 400 so as to expand the diameter of the distal end of the reduced diameter in which the locking portion 14 is formed. As the insertion is expanded, the reduced diameter is formed to form the molding part 18.

Such a conventional pipe forms the molded part 18 through the first process of rotating and turning to form the molded part 18 and the second process of pressurizing the tube, the bead, and expanding the tube.

Thus, the first step is made of a first turning process of turning the pipe by rotation to form a thin thickness when forming the molding portion of the vehicle air conditioner pipe, and a second step of the shaft tube, bead, expansion process to press the tool to form After completion, the pipe is moved to the second process to be molded and progressed to the two processes, a problem arises that the work efficiency of the worker is reduced.

In addition, as the first process of turning and forming the second process of pressing and forming into two processes, the production cost decreases due to the decrease in productivity due to the increase of working time and the inability to mass-produce.

In addition, two processes, the first process of turning and forming and the second process of pressing, are invested in equipment of two molding processes, resulting in an increase in equipment cost.

In addition, as the molding process proceeds to the turning process during the initial molding, the wearability of the molded part is weak, resulting in an increase in product defects and durability.

Meanwhile, in the turning process, cutting oil is used to reduce and cool the frictional heat of the tool and the pipe. The use of the cutting oil also extends the life of the tool and makes the pipe finish beautiful.

However, as the use of cutting oil, the smell stimulates the olfactory workers, various skin diseases occur when contacting, adversely affecting the working environment has caused a problem of lowering productivity and work efficiency.

And when the life of the coolant (corruption and rancidity) is over, it must be separated and treated as a separate industrial waste, and the new coolant must be added again, there was a number of problems such as increased cutting oil processing cost and production cost.

In addition, when the cutting oil does not go through the normal purification facility, it accelerates the contamination of the surrounding soil and groundwater, and processing the cutting oil negatively, which causes the environmental pollution and causes a problem.

The main object of the present invention for solving such a problem is to draw the process of pressing the pipe to press the pipe to be made in the same line, such as shaft tube, bead, tube expansion process while maintaining the inner diameter of the pipe to the original thickness The present invention provides a car air conditioner pipe drawing molding apparatus and its forming method for maximizing the pipe forming part productivity, merchandise, and use efficiency by forming a thin outer diameter thereof.

Therefore, the drawing device for automobile air conditioner pipe forming of the present invention; A main body housing in which a drawing die having an axial tube hole into which the outer diameter of the pipe is inserted and tightly formed is formed while maintaining the inner diameter of the forming part of the pipe in a thin state, and formed on one side thereof; A drawing plug having a fixing part which protrudes outwards through the main body housing to the other side while forming a drawing hole inserted into the inner diameter of the pipe at one end of the locking jaw inserted into the main body housing; It characterized in that it comprises a drawing housing fixed to the fixing portion of the drawing plug to form a guide sphere that is slidably inserted into the body housing.

The drawing device for automobile air conditioner pipe forming of the present invention; Drawing dies of the main housing; It is formed of a cemented carbide, characterized in that it comprises an insertion seat having a reduced inclined surface inclined from the outer side to the inner side end portion of the shaft hole to guide the pipe to the shaft hole.

The drawing device for automobile air conditioner pipe forming of the present invention; It characterized in that it comprises a pull inclined surface formed to face the reduced inclined surface of the draw die on both sides of the draw hole while protruding the draw hole so as to have the same diameter as the inner diameter of the pipe inserted into the one end of the locking jaw of the drawing plug.

The drawing device for automobile air conditioner pipe forming of the present invention; A stepped jaw is formed in the inner center while the fixing plug of the plug is penetrated, thereby forming a tip insertion groove into which a drawing die is inserted to one side of the step, and the guide housing of the drawing housing slides to the other side. Characterized in that constitutes a guide groove.

The drawing device for automobile air conditioner pipe forming of the present invention; A buffer support jaw is formed so that one end of the shock absorbing member formed to be inserted into the outer circumference of the main body housing is tightly supported, and the other end of the shock absorbing member is formed to be closely buffered to the outer circumference of the drawing housing inserted into the guide groove. It is characterized by comprising a buffer tight jaw.

On the other hand, the drawing method for automobile air conditioner pipe molding of the present invention; A pipe seating step of seating one end of the pipe to an insertion seat of the main body housing in which a drawn plug fixedly coupled to the drawing housing is fixed while the other side of the pipe is fixed in a horizontal state; A drawing device pressurizing step of pressurizing the drawing housing when the pipe is inserted and seated in the pipe seating step, and pressing the drawing housing while being pressurized by the cushioning member to be in close contact with the main housing; As the drawing device is pressurized in the pressing step, the drawing port of the drawing plug is inserted into the inner diameter of the pipe seated in the insertion seat, and one end of the pipe is compressed by the inclined slope, and the outer diameter of the drawing device A diameter reducing step of being in close contact with the inner diameter and being in close contact with the outer circumference of the drawing plug; A retracting device retracting step of retracting the pressurized drawing device to retract the drawing plug in a state in which the pipe is inserted into the shaft hole in the diameter reducing step; A drawing slope contacting step in which the drawing slope of the drawing port inserted into the inner diameter of the pipe is in close contact with the inner diameter of the pipe in close contact with the outer circumference of the drawing plug while the drawing plug is retracted by the drawing housing in the drawing device retracting step; When the inclined inclined surface of the drawing plug is in close contact with the inclined inclined surface, the tube is pulled out of the shaft tube by pulling out the inner diameter of the reduced pipe by the retracting force of the drawing tool, and the length of one side end portion thereof is drawn out. Characterized in that it comprises a drawing portion forming step of forming a draw portion to be inserted into a thin thickness.

Such an air conditioner pipe drawing apparatus of the present invention and a molding method thereof include a shaft tube, a bead, in which a first turning process of turning the pipe by rotation to form a thin thickness thereof by rotating the pipe when forming a molding part of a vehicle air conditioner pipe presses the tool. As the second process, expansion process, pressurizes and draws the pipe, it can be molded into the same process as the shaft, bead, and expansion process, and the operator does not have to move the process line, improving the work efficiency of the worker. To provide.

Automotive air conditioner pipe drawing molding apparatus and the molding method of the present invention by pulling the reduced diameter close to the outer periphery of the drawing plug while pulling out the draw plug to extend the length of the draw while maximizing productivity and marketability, as well as The circulation flow of the refrigerant is also smoothly provided, thereby maximizing its use efficiency.

Automotive air conditioner pipe drawing molding apparatus of the present invention and the forming method thereof is drawn, shaft, bead, expansion pipe, etc. is made in the same process, while reducing the labor time and productivity while improving the work time is easy to mass production of the product Provides the effect of lowering costs.

The automobile air conditioner pipe drawing molding apparatus and the molding method thereof according to the present invention provide all the forming processes in one process, thereby reducing the capital investment cost, thereby providing an effect of reducing the cost in manufacturing the automobile air conditioner pipe.

Automotive air conditioner pipe drawing molding apparatus and the molding method of the present invention can solve the problems caused by turning due to a simple drawing process is excellent in wearability of the molded part provides an effect of improving the quality of the product as well as durability. .

The automobile air conditioner pipe drawing molding apparatus and the forming method of the present invention provide the effect of lowering the cutting oil processing cost and production cost by using the cutting oil while forming the pipe by the drawing process without the cutting oil in the turning process using the cutting oil. .

The automotive air conditioner pipe drawing molding apparatus of the present invention and the molding method thereof do not use cutting oil, thereby improving working efficiency by improving working environment, and providing an effect of preventing environmental pollution.

Looking at this preferred embodiment of the present invention with reference to the drawings as follows.

First of all, it should be noted that the same components or parts in the drawings are denoted by the same reference numerals as possible. .

1 is a partial cross-sectional perspective view showing a drawing device for forming a car air conditioner pipe according to the present invention, Figure 2 is an exploded perspective view showing a drawing device for forming a car air conditioner pipe according to the present invention, Figure 3 is a car air conditioner according to the present invention 4 is a block diagram illustrating a drawing method for forming a pipe, and FIG. 4 is a block diagram showing a drawing method for forming a car air conditioner pipe according to the present invention, and FIG. 5 is a flowchart showing a process of forming a car air conditioner pipe forming part according to the present invention.

As shown in Figures 1 to 5, the drawing device 100 for automobile air conditioner pipe forming of the present invention; A main body housing 120 having a drawing die 110 for reducing the diameter of the pipe 10; A draw plug 130 having a draw hole 132 inserted into the main body housing 120 and inserted into the inner diameter of the reduced pipe 10; The drawing plug 130 is fixed to the drawing housing 140 formed with a guide sphere 141 is inserted into the body housing 120 guides.

The main body housing 120 has a drawing die having a tubular hole 111 in which the outer diameter of the pipe 10 is inserted into close contact with the outer diameter of the pipe 10 so as to form a thin thickness while maintaining the inner diameter of the forming part 18 of the pipe 10. 110 is formed on one side inside.

Here, the drawing die 110 is ideally formed of cemented carbide, and has a reduced inclined surface 112 that is inclined gradually from the outside to the inner side at one end portion to guide the pipe 10 to the shaft tube hole 111. It is preferable to configure the insertion seat 113.

The drawing plug 130 forms a drawing hole 132 inserted into the inner diameter of the pipe 10 at one end of the locking jaw 131 inserted to slide into the main body housing 120, and the main housing 120 to the other side. The fixing part 134 protrudes to the other side through the through.

In addition, the drawing port 132 formed at one end of the locking projection 131 of the drawing plug 130 protrudes to have the same diameter as the inner diameter of the pipe 10 to be inserted while drawing dies on both sides of the drawing port 132. It is preferable to configure the draw slope 133 formed to face the reduced slope 112 of (110).

The drawing housing 140 fixes the fixing part 134 of the drawing plug 130 to constitute a guide mechanism 141 that is slidably inserted into the main body housing 120.

In addition, the main body housing 120; The through hole 124 through which the fixing part 134 of the drawing plug 130 penetrates to the center of the step 123 while forming a step 123 in which the locking jaw 131 of the drawing plug 130 is caught in the inner center thereof. To form.

And to form a tip insertion groove 121 is inserted into the draw die 110 to one side of the step 123, the guide groove 122 is inserted so that the guide port 141 of the drawing housing 140 slides to the other side It is preferable to constitute.

Furthermore, a draw support jaw 125 is formed such that one end of the buffer member 126 formed to be inserted into the outer circumference of the main body housing 120 is in close contact with the draw housing 140 inserted into the guide groove 122. It is preferable that the other end of the buffer member 126 is formed in close contact with the outer peripheral edge of the buffer tight jaw 142 formed to be buffered.

Thus, looking at the operation through the automobile air conditioner pipe forming drawing method of the present invention configured as follows.

First, the main body housing 120 into which the drawn plug 130 fixedly coupled to the drawing housing 140 at one end of the pipe 10 in a state where the other side is fixed in a horizontal state to the pipe 10 cut according to the standard is inserted. It is seated in the pipe seating step (S10) to the insertion seat hole (113).

Thus, when the pipe 10 is seated in the insertion seat hole (113) in the pipe seating step (S10) and pressurized the draw housing 140, the pressurized draw housing 140 is buffered by the buffer member 126, the main body It is in close contact with the housing 120 to press the main body housing 120 in the drawing device pressing step (S20).

As described above, the drawing device 100 is pressurized in the drawing device pressurizing step (S20) while the drawing hole 132 of the drawing plug 130 is inserted into the inner diameter of the pipe 10 seated in the insertion hole 113. One side end of the 10 is compressed by the reduction inclined surface 112, the outer diameter is in close contact with the inner circumference of the shaft tube hole 111, the inner diameter is in close contact with the outer circumference of the drawing plug 130 diameter reduction step (S30) Will reduce its diameter.

Here, when the one end of the pipe 10 is inserted into the shaft tube hole 111, the diameter is reduced but the thickness of the one end is maintained as it is.

In this way, in the diameter reduction step (S30) in the state in which the pipe 10 is inserted into the shaft hole (111) to pull back the draw device 100 is pressed back in the drawing device retracting step to the retracting plug 130.

In the drawing device retraction step S40, the drawing plug 130 is retracted by the drawing housing 140, and the drawing slope 133 of the drawing port 132 inserted into the inner diameter of the pipe 10 is drawn out by the drawing plug 130. The inner surface of the pipe 10 in close contact with the outer circumference of the inclined slope to be in close contact (S50).

As such, when the inclined inclined surface 133 of the drawn plug 130 is in close contact with the inclined inclined surface (S50), while pulling the inner diameter of the reduced pipe 10 by the retracting force of the drawing device 100, the pipe 10 ) Is drawn out of the shaft tube hole 111, the length of the one end portion is reduced and is drawn and extended to be inserted into the shaft tube forming apparatus 200 is drawn into the drawing portion 11 of the thin thickness that can be a shaft tube It is formed in the drawing step (S100) consisting of (S60).

As such, when the draw portion 11 having a thin thickness to be inserted into the shaft forming apparatus 200 is formed, the drawing portion 11 is pressed by the shaft forming apparatus 200 so that the drawing portion 11 forms the shaft forming apparatus ( The boundary between the drawing portion 11 and the pipe 10 is bent outward by the pressing force of the shaft tube forming apparatus 200 while being inserted into the inside of the 200 to reduce the diameter of the drawing portion 11. ) Is formed in the shaft tube process (S200).

In this way, when the diameter of the one-shot portion is reduced, the bead in the state in which the one-sided end is inserted into the bead forming apparatus 300 so as to form the engaging portion 14 at one side end whose diameter is reduced so as not to be separated from the joint block 20. Pressing the molding apparatus 300, the locking portion 13 is bent in the form of a band to form the locking portion 14 in the bead process (S300).

Then, the expansion punch 410 is pressed into the reduction diameter by pressing the expansion punch 410 while the pipe is inserted into the expansion molding apparatus 400 so as to expand the diameter of the distal end of the reduced diameter in which the locking portion 14 is formed. By expanding the diameter reduced while being inserted is formed in the forming unit 18 in the expansion process (S400).

In this way, the drawing process, the tube process, the bead process, the expansion process is made in the same process in the same line, while reducing the labor maneuver while reducing the work time and productivity is improved.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and alterations are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

1 is a partial cross-sectional perspective view showing a drawing device for automobile air conditioner pipe forming according to the present invention.

Figure 2 is an exploded perspective view showing a drawing device for automobile air conditioner pipe forming according to the present invention.

Figure 3 is a process diagram showing a drawing method for automobile air conditioner pipe forming according to the present invention.

Figure 4 is a block diagram showing a drawing method for forming a car air conditioner pipe according to the present invention.

5 is a process chart showing a process of molding a vehicle air conditioner pipe forming unit according to the present invention.

Figure 6 is a perspective view showing a state in which the automobile air conditioning pipe is molded according to the present invention.

Explanation of symbols on the main parts of the drawings

10: pipe 11: drawing part

13: hook part 14: hook part

18: molding 20: joint block

100: drawing device 110: drawing die

111: shaft hole 112: inclined plane

113: insertion seat 120: main body housing

121: tip insertion groove 122: guide groove

123: step 124: through hole

125: buffer support jaw 126: buffer member

130: drawing plug 131: locking jaw

132: drawing hole 133: drawing slope

134: fixed part 140: drawing housing

141: guide mechanism 142: cushioning close jaw

200: shaft forming apparatus 300: bead molding apparatus

400: expansion molding apparatus 410: expansion punch

Claims (6)

A draw die 110 having a shaft tube hole 111 in which the outer diameter of the pipe 10 is inserted into close contact with the outer diameter of the pipe 10 is formed on one side of the inner portion of the pipe 10 to maintain the original diameter of the pipe 10. A main body housing 120; Protruding to the outside by penetrating the main body 120 to the other side while forming a draw hole 132 is inserted into the inner diameter of the pipe 10 at one end of the locking jaw 131 is inserted to slide into the main body 120 Drawing plug 130 having a fixed portion 134; An automobile comprising a drawing housing 140 which fixes the fixing part 134 of the drawing plug 130 to form a guide tool 141 that is slidably inserted into the body housing 120. Air Conditioning Pipe Drawing Machine. The method of claim 1, The drawing die 110 of the main body housing 120; Including the insertion seat hole 113 is formed of cemented carbide and provided with a reduced inclined surface 112 inclined from the outside to the inner side at one end of the shaft tube hole 111 to guide the pipe 10 to the shaft tube hole (111) Automobile air conditioner pipe drawing molding apparatus characterized in that the configuration. The method of claim 1, A drawing die 110 is formed on both sides of the drawing port 132 while protruding the drawing port 132 to have the same diameter as the inner diameter of the pipe 10 inserted into one end of the locking jaw 131 of the drawing plug 130. Automotive air conditioner pipe drawing molding apparatus, characterized in that it comprises a pull-out inclined surface 133 formed to face the inclined inclined plane 112. The method of claim 1, The main body housing 120; While having a through hole 124 through which the fixing portion 134 of the drawing plug 130 passes, a stepped jaw 123 is formed in the inner center of the hooked jaw 131, and a drawing die ( The air conditioner pipe drawing molding apparatus, characterized in that the tip insertion groove 121 is formed to be inserted 110, the guide groove 122 is inserted so that the guide port 141 of the drawing housing 140 slides to the other side. . The method of claim 1, A buffer support jaw 125 is formed so that one end of the shock absorbing member 126 formed to be inserted into the outer circumference of the main body housing 120 is in close contact, and the drawing housing 140 inserted into the guide groove 122 is formed. Automobile air conditioner pipe drawing molding apparatus, characterized in that the other end of the shock absorbing member 126 is formed in close contact with the outer periphery of the buffer tight jaw 142 formed to be buffered. Insertion of the main body housing 120 into which the pull plug 130 fixedly coupled to the drawing housing 140 is inserted at one end of the pipe 10 in a state in which the other side is fixed in a horizontal state in accordance with the standard. Pipe seating step (S10) for mounting in the seating hole 113; When the pipe 10 is inserted and seated in the pipe seating step (S10), the drawing housing 140 is pressurized, and the drawn housing 140 that is pressurized is cushioned by the buffer member 126 to be in close contact with the main body housing 120. A drawing device pressurizing step (S20) for pressing the main body housing 120; The drawing device 100 is pressurized in the drawing device pressurizing step (S20) while the drawing hole 132 of the drawing plug 130 is inserted into the inner diameter of the pipe 10 seated in the insertion seat hole 113 while the pipe 10 One side end of the) is compressed by the reduction inclined surface 112, the outer diameter is in close contact with the inner circumference of the shaft tube hole 111, the inner diameter is in close contact with the outer circumference of the pull plug 130 diameter reduction step of reducing the diameter (S30); A drawing device retracting step (S40) for retracting the pressurized drawing device 100 to retract the drawing plug 130 in a state in which the pipe 10 is inserted into the shaft hole 111 in the diameter reducing step (S30); As the drawing plug 130 is retracted by the drawing housing 140 in the drawing device retraction step S40, the drawing slope 133 of the drawing port 132 inserted into the inner diameter of the pipe 10 is drawn out 130. A drawing slope contact step (S50) in close contact with the inner diameter of the pipe 10 in close contact with the outer circumference of the; When the drawing slope surface 133 of the drawing plug 130 is in close contact in the drawing slope surface contact step (S50) while pulling the inner diameter of the pipe 10 reduced by the retracting force of the drawing device 100 pipe (10) A pull-out part forming step (S60) is formed to form a thin thickness of the draw portion 11 is inserted into the shaft forming machine 200 while the length of the one end portion is reduced and separated from the shaft tube hole 111 is drawn out Automobile air conditioner pipe drawing molding method, characterized in that.

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