KR20000032531A - Punch structure of middle shell burring device of rotary compressor of air conditioner - Google Patents

Abstract

PURPOSE: A punch structure of middle shell burring device of rotary compressor of air conditioner is provided to perform precise burring and piercing simultaneously and separate burring scraps from a contact surface of a punch after the burring and piercing. CONSTITUTION: A punch structure of middle shell burring device of rotary compressor of air condition includes a burring punch(216) and a burring die(223), wherein the burring punch includes a piercing blade(216a) having a length corresponding to a thickness of a work piece for piercing a burring hole(80"), a burring part(216b) extended from the piercing blade and having a length longer than a depth of the burring hole, a punch head(216") to be mounted with the burring punch at a rear part thereof, a through hole(241) formed longitudinally in a center portion and formed with a female screw part(243) and a spring hole(242), an eject pin(245) movably inserted in the through hole and inserted in the spring hole and formed with a head(245') at a rear part for preventing deviation, a compression spring(244) contacting a rear part of the eject pin head for pressing the eject pin forward, and a spring base nut(243') coupled with the female screw part for controlling the spring force of the compression spring and preventing the deviation thereof.

Description

Punch Structure of Middle-Shell Burring System of Air-Conditioner Rotary Compressor

The present invention relates to a punch structure of a middle shell burring apparatus of an air conditioner rotary compressor, and more particularly, after processing so as to simultaneously process the piercing and burring of the burring hole of the middle shell of the air conditioner rotary compressor. A punch structure of a middle shell burring device of an air conditioner rotary compressor for separating from a contact surface of a punch.

In FIG. 1, the rotary compressor 100 for an air conditioner includes an outer case formed of a middle shell 101, an upper shell 102, and a lower shell 103, and the middle shell 101 has an upper case in FIG. 1. The motor assembly 110, in which the stator 111 and the rotor 112 are assembled, is press-fitted and fixed, and a pump assembly 120 driven through the shaft 113 from the motor assembly 110 is fixed to the lower portion. The upper shell 102 seals the upper part of the middle shell 101, the terminal cover 115 is assembled with the wiring terminal 114 installed on the upper surface thereof, and the lower end of the middle shell 101 is assembled with the lower shell. The base plate 104 and the compressor pedestal 105 are attached to the bottom of the lower shell 103 and are installed via the compressor pedestal 105. In addition, the middle shell 101 is provided with a burring hole 80 "and a connecting pipe 90" to connect the accumulator 130 to the suction port of the pump assembly 120, and is not used as in transportation. In this case, the inlet of the accumulator 130 is closed by the suction plug 131. In addition, the supply pipe connecting pipe 132 of the refrigerant is discharged to the discharge port of the pump assembly 120 through the middle shell 101 similarly connected to the discharge port of the pump assembly 120, the plug 133 when not in use The log exit is closed.

In the air conditioner rotary compressor 100 having the above-described structure, the middle shell 101 is particularly used to install the motor assembly 110 and the pump assembly 120 on the inner circumference thereof. For the clearance, the roundness should be precisely formed to less than 30μ.

2 is a schematic process diagram showing a configuration of a method for manufacturing a middle shell of an air conditioner rotary compressor according to the present invention. In FIG. 2, the manufacturing method of the middle shell of the air-conditioning rotary compressor includes a blanking step S1, a roll bending step S2, a shrinking step S3, a shell welding step S4, and a brushing step S5. It includes a secondary expanding step (S6), a side cutting step (S7), a piercing step (S8), a burring step (S9), a bracket welding step (S10), a brazing step (S11), and a secondary expanding step (S12). The blank 10 is cut | disconnected and manufactured using the blanking die 11 and the blanking punch 12 to the predetermined developed size from the roll 10 ', In the said roll bending step S2, blank 10 is passed between the plurality of lower rolls 21 and the upper rolls 22 to form a substantially cylindrical shape, the roll bent shell 20, between the both ends so as to be welded in the shrinking step (S3) The gap 20 'is shrunk into a small amount of the gap 30' by the lower shrinking mold 31 and the upper shrinking mold 32, which are plastic deformation processing tools, The source is improved.

Thereafter, in the shell welding step S4, the shell 30 is placed on the welding jig 41, and the welding portion 40 'is welded by the welding torch 42. The welded shell 40 is removed from the slag of the weld 40 'while moving to the brush 52 which is disposed on the shell pedestal 51 and rotates in the brushing step S5. The brushed shell 50 is disposed at the outer circumference of the primary expansion jaw 61 in the primary expansion step S6 and is moved to the primary jaw guide 63 by the downward movement of the primary expansion cone 62. The primary expansion jaw 61, which is guided and radially expanded, causes the brushed shell 50 to expand into a cylinder of a predetermined diameter.

The primary expansion shell 60 is gripped by the shell gripping cone 72 and the shell gripping jaw 71 in the side cutting step S7, and then both ends thereof are cut to a predetermined size by the cutter 73. It is machined and the joining portion 70 'of the upper shell 102 and the lower shell 103 is machined.

Thus, the piercing step S8 of forming the piercing hole 80 'from the shell 70 in which the engaging portion is processed is performed by the piercing cone 81, the piercing punch 82, and the piercing jaw 83. In this way, a burring step S9 is performed to form a burring hole 80 "from the pierced shell 80, and in that burring step S9, the pierced shell by the shell positioning member 88 After arranging 80, the burring cam 87 may be reciprocated by the operation cam 86 to form a burring hole 80 ″.

After that, in the bracket welding step S10, the burred shell 90 is supported by the shell support member 91, and the fixed bracket 90 'is fixed to the shell 90 by the spot welding electrode 92. To weld the connector 90 "to the burring hole 80" of the shell 90 with a brazing torch 93 in the brazing step S11, and then to precisely process the final inner cylinder diameter of the shell. A second expanding step S12 is performed for this purpose. In the second expanding step S12, similarly to the first expanding step S6, after the shell 90 is inserted and disposed on the outer circumference of the secondary expansion jaw 96, the secondary expansion cone 97 is used. The secondary expansion jaw 96 is radially expanded by the secondary jaw guide 98 and is processed into a secondary expansion shell 95 having a precise inner diameter.

As such, after welding and brazing, the inner diameter is secondarily enlarged to remove the thermal effect caused by the welding, and the brazing can be precisely processed to a designed dimension having a high precision of roundness of 30 mu or less.

Piercing and processing in order to process the burring hole (80 ") in which the inlet, discharge of the connection pipe (90") to the pump assembly 120 to the shell 80 in the above-described burring step (S9) is hermetically fixed Since the burring must be processed separately, there is a problem that productivity is lowered, and roundness of the inner circumferential surface of the shell 80 is lowered due to frequent loading and unloading. In addition, since the burring is performed after the piercing for the burring hole (80 "), there is a fear that processing failure of the burring hole (80") may occur because it is not completely matched with each other.

In addition, since the burring hole 80 "portion of the shell 80 is arcuate, piercing and burring scraps adhere to the contact surface of the punch and are blown out by hand or air to remove them, thereby lowering productivity. .

Accordingly, the present invention is to solve this problem, after the processing to be able to precisely process the piercing and burring of the burring hole of the middle shell of the rotary type air conditioner rotary compressor from the inside to the outside under the mass production system, punching the burring scrap It is an object of the present invention to provide a punch structure of a middle shell burring device of an air conditioner rotary compressor for separating from a contact surface.

1 is a cross-sectional view showing the configuration of an air conditioner compressor;

Figure 2 is a schematic process diagram for explaining the configuration of the manufacturing method of the middle shell of the air conditioner rotary compressor according to the present invention,

3 is a top plan view showing a configuration of a middle shell burring apparatus of a rotary air conditioner rotary type compressor employing a punch of a structure according to an embodiment of the present invention;

4 is a cross-sectional view taken along line 4-4 of FIG. 3;

5 is a partially enlarged cross-sectional view of the punch unit in FIG. 4;

6 is a sectional view of the punch showing the punch structure of FIG.

<Explanation of symbols on the main parts of the drawing>

80: shell (milled part) 80 ': piercing hole

80 ": Burring Hole 200: Burring Device

201: connecting member 202: fixing nut

203: protruding plate 205: base plate

210: Burling Punch Unit 211: Cam Slider

211a: T-shaped separating guide block 211 ', 215': slide inclined cam surface

212: lifting guide block 212 ': flange

212 ", 217 ': Fixing bolt 212a: Guide installer

212b: stopper 213: setting ring

215: punch slider 216: burring punch

216 ': Lock nut 216 ": Punch head

216a: Piercing blade 216b: Burring processing part

216c: shell contact surface 217: guide plate

220: burring die 221: reciprocating block

222: diblock 223: burling die

230: scrap removal unit 241: eject pin insertion hole

242: spring insertion hole 243: female threaded portion

243 ': Spring support nut 244: Compression spring

245: eject pin 245 ': eject pin head

250: location pin

In order to achieve the above object, the punch structure of the middle shell burring apparatus of an air conditioner rotary compressor according to an embodiment of the present invention includes a burring die and a burring die for piercing and piercing by the burring punch. In the middle shell burring device of the air-conditioning rotary type compressor, the burring punch corresponds to the thickness of the material to be processed so as to pierce the burring hole by interaction with a burring die having a burring process corresponding to the outer diameter of the burring hole. Piercing blade portion formed to the length; A burring processing portion extending to the piercing blade and formed to a length deeper than the depth of the burring hole; A shell contact surface having an arc shape such that the front surface contacts the shell; A punch head formed to mount a burring punch from the rear; Eject pin insertion hole is formed to penetrate in the longitudinal direction in the center portion, the female screw portion and the spring insertion hole of the diameter is enlarged from the rear; An eject pin having a eject pin head reciprocally inserted into the eject pin insertion hole and inserted into a spring insertion hole at the rear thereof to prevent detachment; A compression spring installed in contact with the rear surface of the eject pin head in the eject pin insertion hole to press the eject pin forward; And, it characterized in that it comprises a spring support nut which is fastened to the female screw portion to adjust the elastic force of the compression spring and prevent the departure to the rear.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a configuration of a middle shell burring apparatus of an air-conditioning rotary compressor employing a punch of a structure according to an embodiment of the present invention is shown as a top plan view, and FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 5 is a partially enlarged cross-sectional view of the punch portion of FIG. 4, and FIG. 6 is a cross-sectional view of the punch structure of FIG. 5.

The middle shell burring apparatus of the air conditioner rotary compressor of the present invention includes a cam slider 211 having a substantially circular cross section, a lifting guide block 212 having a substantially cylindrical shape, a burring punch 216, a punch slider 215, and a burring die 223. It is configured to include).

The connecting member 201 is a connecting member 201 of a reciprocating mechanism, such as a fluid cylinder, which is disposed up and down, and is dismantled through the fixing nut 202 and the protruding plate 203 of the cam slider 211. The cam slider 211 is possibly connected to the connecting member 201.

The cam slider 211 has a slide inclined cam surface 211 ′ formed to be inclined at an upper portion as a circular cross section in FIGS. 3 and 4, and a lifting guide block together with the connecting member 201 of the fluid cylinder up and down. Guided to 212 and configured to reciprocate.

The lifting guide block 212, the shell 80 is inserted into the outer circumference, the inner circumference thereof guides the lifting movement in sliding contact with the outer circumference of the cam slider 211, the flange 212 'and the fixed bolt It is fixed to the base plate 205 via 212 ". Furthermore, the guide hole 212a for installing so that each punch slider 215 can be guided radially is formed of the lifting guide block 212. .

Further, the stopper 212b is fixedly attached to the inner circumferential surface of the lifting guide block 212 so as to contact the slide inclined cam surface 211 ′ of the cam slider 211 and limit the rise of the cam slider 211. That is, the bottom surface of the stopper 212b is formed as an inclined surface corresponding to the slide inclined cam surface 211 ′ of the cam slider 211.

As such, by limiting the upward movement of the cam slider 211, the radial movement of the burring punch 216 may be limited to precisely process the piercing and the burring simultaneously.

The punch slider 215 is in sliding contact with the slide inclined cam surface 211 ′ of the cam slider 211 and cams to convert the lifting movement of the cam slider 211 into a radial movement, and the cam slider ( A slide inclined cam surface 215 'is formed to return 211, and the lifting guide is provided so that the radial movement of the punch slider 215 is guided by the guide installation hole 212a of the lifting guide block 212. It is installed in the guide installation hole 212a of the block 212, the burring punch 216 is fixed to the punch slider 215, respectively, to move radially together. As an example of the method of fixing the burring punch 216, the punch head 216 "is inserted into the punch installation hole 215a formed in the radially outer side surface of the punch slider 215 in FIG. The fixing nut 216 'is fastened to the female thread portion 215c of the side wall of the fixing nut insertion hole 215b to press the outer surface of the "

The burring punch 216 is formed with a piercing blade portion 216a and a burring processing portion 216b, and forms an arc-shaped shell contact surface 216c such that the front surface contacts the shell 80.

The piercing blade portion 216a is formed to pierce for the burring hole 80 " in interaction with the burring die 223 having a burring process corresponding to the outer diameter of the burring hole 80 " The length L of the thickness of the material is formed.

The burring processing portion 216b extends to the piercing blade portion 216a and is formed to have a length deeper than the depth of the burring hole 80 ".

In addition, the burring punch 216 has a punch head 216 "formed to have an enlarged diameter so as to mount the burring punch 216 from the rear, and is fixed by the fixing nut 216 'as described above. Will be.

Moreover, the burring punch 216 separates the scrap pierced and attached to the arc-shaped shell contact surface 216c from the shell contact surface 216c, is attached to the shell contact surface 216c, and is attached with the burring punch 216. An eject pin 245 is provided to be discharged to the scrap removal unit 230 along the scrap discharge passage 221 ″ behind the burring die 223 without being reversed.

The eject pin 245 is formed to penetrate in the longitudinal direction at the center portion, and can reciprocate in the eject pin insertion hole 241 in which the female screw portion 243 and the spring insertion hole 242 of the diameter enlarged from the rear are formed. Is inserted. The eject pin 245 has a direct eject pin head 245 ′ enlarged at the rear thereof and is inserted into the spring insertion hole 242 at the rear to prevent separation.

In addition, a compression spring 244 is installed in the eject pin insertion hole 241 in contact with the rear surface of the eject pin head 245 'to press the eject pin 245 forward, and the elastic force of the compression spring 244. The rear of the compression spring 244 is supported by a spring support nut 243 'fastened to the female screw portion 243 so as to adjust the pressure and prevent the rearward departure.

On the other hand, the burring die 223 is fixed to the die block 222, respectively, and the die block 222 is radially opposed to the punch slider 215 on the base plate 205 to the reciprocating mechanism. When the shell 80 is disposed on the outer circumference of the elevating guide block 212, the die block 222 is first reciprocated by the reciprocating mechanism. Are advanced to contact the shell 80.

The reciprocating block 221 is not formed at the bottom of the die block 222, as shown in Figure 4, the scrap discharge passage 221 "so that the scrap is retracted from the burring die 223 to fall downward It is formed, the scrap removal unit 230 is installed on the base plate 205 to collect the burring scrap over the reciprocating movement distance of the scrap discharge passage 221 "according to the reciprocating motion.

In addition, when the piercing hole (80 ') is processed before the burring step (S9), as shown in Figure 2, the reciprocating so as to determine the machining position of the burring hole (80 "based on the piercing hole 80' It is preferable to further include a location pin 250 which is inserted into the piercing hole 80 ′ by the exercise device into its piercing hole 80 ′ and detached by unloading.

The operation of the middle shell burring device of the air conditioner rotary compressor configured as described above is as follows. First, when the shell 80 is loaded on the elevating guide block 212, and the location pin 250 is advanced, the reciprocating block 221 is advanced by the reciprocating mechanism to bury the burring die 223 and the die block 222. ) Touches the shell 80, and then the lifting guide block 212 is raised by a reciprocating mechanism such as a fluid cylinder to burr against the burring die 223 by advancing the punch slider 215 radially outward. The burring hole 80 "is processed by the action of the punch 216 at the same time as the piercing from the shell 80. At this time, the generated scrap is pressed by the eject pin 245 of the burring punch 216. Even if the burring punch 216 is retracted together with the punch slider 215, the burring punch 216 is attached to the shell contact surface 216c of the burring punch 216 so that the burring punch 216 does not retreat. ) And will continue to repeat, resulting in scraps that do not jam. And the scrap removal unit 230 is collected along the scrap discharge passage 221 "of the burring die 223 and the reciprocating block 221. Thereafter, the burring punch 216 is reciprocated and the cam slider ( When the back of the shell 80 with the falling of 211 is released, the reciprocating block 221 is reversed and the burring die 223 with the die block 222 and the location pin 250 is not shown. By retreating by the reciprocating mechanism, the shell 80 can be unloaded, and the processing of the burring hole 80 "is completed. By doing so, the burring hole 80 'for assembling the pump assembly 120 can be pierced with precision at the same time as the piercing.

According to the configuration and function of the punch structure of the middle shell burring apparatus of the air conditioner rotary compressor according to the embodiment of the present invention described above, the scrap is attached to the shell contact surface 216c of the arc shape by the configuration of the eject pin 245. Instead, it can be removed through the scrap discharge passage 221 "of the burring die 223 and the reciprocating block 221, so that the piercing and burring of the burring hole can be precisely processed under the mass production system from the inside to the outside at the same time. It has the effect of being.

Claims (2)

In the middle shell burring apparatus of the air conditioner rotary compressor comprising a burring punch 216 and a burring die 223 which performs piercing and piercing by the burring punch 216, the burring punch 216 )end: To the length (L) corresponding to the thickness of the material to be processed to pierce the burring hole (80 ") by interaction with the burring die 223 having a burring process corresponding to the outer diameter of the burring hole (80") A piercing blade portion 216a formed; A burring processing portion 216b extending to the piercing blade portion 216a and having a length deeper than the depth of the burring hole 80 "; A shell contact surface 216c having an arc shape such that the front surface contacts the shell 80; A punch head 216 "formed to mount the burring punch 216 at the rear; An eject pin insertion hole 241 formed to penetrate in the longitudinal direction at the center portion and having a female screw portion 243 and a spring insertion hole 242 having a diameter enlarged from the rear; An eject pin 245 inserted into the eject pin insertion hole 241 so as to reciprocate and inserted into the spring insertion hole 242 at the rear thereof to prevent detachment from the eject pin 245 '; A compression spring 244 installed in contact with the rear surface of the eject pin head 245 'in the eject pin insertion hole 241 to press the eject pin 245 forwardly; And Middle shell of the air-conditioning rotary compressor comprising a spring bearing nut 243 'fastened to the female screw portion 243 to adjust the elastic force of the compression spring 244 and prevent the rearward departure. Punch structure of the burring device. The method of claim 1, wherein the burring device is horizontally raised and lowered to process a burring hole (80 ″) in which the inlet and discharge of the coolant to the pump assembly 120, the connection pipe (90 ″) is securely fixed. It is fixed to the connecting member 201 via a connecting member 201 of a reciprocating mechanism such as a fluid cylinder and a fixing nut 202 and a protruding plate 203, and is detachably connected to the slide inclined cam surface ( 211 ′), the cam slider 211 having a substantially circular cross section and the shell 80 are inserted into the outer circumference thereof, and the inner circumference guides the lifting and lowering motion by sliding contact with the outer circumference of the cam slider 211, and the flange 212. ') And fixing bolts 212 " are fixed to the base plate 205, and have a substantially cylindrical lifting guide block formed with guide installation holes 212a for guiding each of the punch sliders 215 in a radial direction. 212 and the slide of the cam slider 211 A slide inclined cam surface 215 'is formed in sliding contact with the dead cam surface 211' and the cam action to convert the lifting movement of the cam slider 211 into the radial movement, and the radial movement is the lifting guide block ( The punch slider 215 which is guided to the guide installation hole 212a 'of 212, and which the burring punch 216 which performs piercing and piercing at the same time, is fixed to the punch slider 215 and radially opposed to the punch slider 215, respectively. A reciprocating block 221 reciprocating by a reciprocating mechanism on the base plate 205 to reciprocate the burring die 223 to a position for approaching the shell 80 and a position for loading and unloading. Punch structure of the middle shell burring device of the air-conditioning rotary compressor characterized in that it is fixed via the die block 222.