KR20000008732U - Expanding needle for sizing the middle shell of air-conditioning rotary compressor with return jaw by elastic band - Google Patents

Abstract

The present invention provides an expanding device for the sizing of the middle shell of an air-conditioning rotary compressor having a return jaw by an elastic band.

The expanding device has an outer circumferential surface formed so that the shells 50,90 before expansion in the retracted position are inserted and enlarge the shells 50,90 to a predetermined diameter in the expanded position, and between the retracted position and the expanded position. And a processing portion 211 configured to radially reciprocate, and an L-shaped cross-section horizontal portion formed together with the processing portion 211 to guide the radial movement of the processing portion 211 and install an elastic band to the outside. A plurality of jaws 210 consisting of a support guide portion 212 formed with a groove (212 '); A plurality of slide keys 230 fixed to the key fixing grooves 211 ′; It is fixed to the upper end of the connecting rod 201 of the fluid cylinder via the shaft 203 to reciprocate together, so that the slide key 230 is inserted, sliding contact so as to switch to radial outward movement in the axial downward movement A cone 220 having a plurality of key slide grooves 221 inclined at an inner surface thereof; An upper support block 250 and a lower part fixed to the base plate 205 using fixing bolts 243 and 253, supporting the support guide portion 212 of the jaw 210 in the middle, and guiding its radial movement. Support block 240; In addition, the jaw 210 is characterized in that it comprises an elastic band 270 which is installed in the elastic band installation groove 212 'of each jaw 210 to return from the expansion position to the contraction position.

Description

Expanding device for sizing the middle shell of air-conditioning rotary compressor with return jaw by elastic band

The present invention relates to an expansion device for sizing the middle shell of an air-conditioning rotary compressor having a return jaw by an elastic band, and more specifically, the outer case is composed of a middle shell, an upper shell, and a lower shell. In the manufacture of the rolled middle shell of the air conditioner rotary compressor of the structure in which the motor assembly having the stator and the rotor assembled thereon is press-fitted and fixed at the bottom, and the pump assembly driven through the shaft from the motor assembly is welded and fixed. When the cylindrical shell formed by roll bending, shearing and welding is formed in the first expansion step and the second expansion step to precisely enlarge the diameter of the inner circumference and the outer circumference to form an accurate diameter of the inner circumference and the outer circumference. Roundness can be easily secured, each jaw can be returned to the retracted position to match, and the structure is further An expansion device for sizing the middle shell of an air-conditioning rotary compressor having a return jaw by a simplified elastic band.

As shown in FIG. 1, the rotary compressor 100 for an air conditioner includes an outer case consisting of a middle shell 101, an upper shell 102, and a lower shell 103, and the middle shell 101 includes: In FIG. 1, a pump assembly 120 driven by a motor assembly 110 having a stator 111 and a rotor 112 assembled thereon is press-fitted and driven through a shaft 113 from the motor assembly 110. ) Is fixed. 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 portion 80 ″ and a connecting pipe 90 ″ to connect the accumulator 130 to the suction port of the pump assembly 120. 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 two ends so that welding is possible 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, and have an inner diameter and an outer diameter. The roundness 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. A burring step S9 is performed to form a burring portion 80 "from the pierced shell 80 in this way, 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 the burring portion 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. Welding the joints 90 " to the burring portion 80 " of the shell 90 with a brazing torch 93, and then precisely machining the final inner cylinder diameter of the shell. A second expanding step S12 is performed for this purpose. In the secondary expanding step S12, after the shell 90 is inserted and disposed on the outer circumference of the secondary expansion jaw 96 similarly to the primary expanding step S6, the secondary expansion cone 97 is disposed. 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.

Therefore, the present invention, the cylindrical shell formed by roll bending, shrinking and welding to form a high roundness of the diameter of the inner circumferential surface and the outer circumferential surface of the inner and outer peripheral surfaces precisely in the first expansion step and the second expansion step Air conditioner with return jaw by elastic band, which makes it easy to secure roundness when setting up the expansion device to enlarge the diameter of the jaw, return to the contraction position to match each jaw, and make the structure simpler. It is an object of the present invention to provide an expanding device for sizing a middle shell of a rotary compressor.

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 rotary compressor of the air conditioner according to the present invention,

3 is a front sectional view of an expanding device for sizing a middle shell of an air-conditioning rotary compressor that guides and cams by a slide key according to an embodiment of the present invention;

4 is a top plan view of FIG. 3;

Figure 5 is a front sectional view showing an example of the configuration of the jaw according to the embodiment of the present invention,

6 is a cross-sectional view taken along line 6-6 of FIG. 5 with an elastic band assembled;

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

S6: first expansion step S12: second expansion step

40 ': weld 50: brushed shell

90: burred shell 90 ': fixing bracket

200: expanding device 201: connecting rod (reciprocating mechanism such as fluid cylinder)

202,204: fixing nut 203: shaft

205: base plate 210: jaw

211 ': key fixing groove 212': elastic band mounting groove

215,225 slide slope 220: cone

221: key slide groove 221 ': side wall slide surface

230: slide key 240: lower support block

241: cylindrical side wall portion 242: bottom portion

243,253: fixed bolt 250: upper support block

270: elastic band

In order to achieve the above object, an expansion device for sizing the middle shell of an air conditioner rotary compressor having a return jaw by an elastic band according to an embodiment of the present invention is a roll bending manufacturing method of the middle shell of the air conditioner rotary compressor. In order to manufacture a blank, the sheet is bent into a blank, subjected to a shrinking process, welded at both ends, and subjected to a first expansion step of the brushed shell, or a piercing hole or burring part to be processed after the first expansion step. An expansion apparatus for sizing a middle shell of an air-conditioning rotary compressor for carrying out a second expansion step of a burled shell having a machining process: A circumferentially disposed shell is inserted before expansion in a contraction position and in an expansion position. An outer circumferential surface is formed to enlarge the shell to a predetermined diameter, and radially reciprocating between the contracted and expanded positions It consists of a processing portion formed with a key fixing groove on the inner surface, and the horizontal portion of the L-shaped cross-section formed together with the processing portion, the support guide portion formed to guide the radial movement of the processing portion and the elastic band installation groove to the outside Numerous jaws; A plurality of slide keys fixed to the key fixing grooves, respectively; A connecting rod of the fluid cylinder reciprocating up and down; Cone is fixed to the upper end of the connecting rod via a shaft reciprocating together, the slide key is inserted, the sliding contact with the inner side is inclined to switch to a radial outer movement during the downward movement in the axial direction, the cone formed a plurality of key slide grooves ; An upper support block and a lower support block fixed on the base plate using a fixing bolt, supporting the support guide of the jaw in the middle, and guiding its radial motion; And, it characterized in that it comprises an elastic band which is installed in the elastic band installation groove of each jaw to return each jaw from the expansion position to the contraction position.

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

FIG. 3 shows an expanding device 200 for sizing a middle shell of an air-conditioning rotary compressor that guides and cams by means of a slide key according to an embodiment of the present invention, and FIG. 4 shows an upper portion thereof. Top view is shown.

3 and 4, the expansion device 200 of the present invention, a plurality of jaw 210, the connecting rod 201 of the reciprocating mechanism, such as a fluid cylinder reciprocating up and down, the upper end of the connecting rod 201 Cones 220 fixed and reciprocating together, support blocks 250 and 240 for guiding the radial motion of the cones 220, elastic bands 270, slide keys 230, key slide grooves 221 and base plates ( 205).

3 and 4, the plurality of jaws 210, the processing portion 211 and the support guide portion 212 forms an L-shaped cross-sectional shape, the processing portion 211, a plurality of It is arranged in the circumferential direction and the shell 50,90 before expansion is inserted in the contracted position, and an outer circumferential surface is formed to enlarge the shell 50,90 to a predetermined diameter in the expanded position, and between the contracted position and the expanded position. It is configured to reciprocate radially, the key fixing groove 211 'is formed on the inner surface.

In addition, the support guide portion 212 of the jaw 210 forms a horizontal portion of the jaw 210 having an L-shaped cross section, supports the weight of the jaw 210, and guides the radial motion of the processing portion 211. It is configured to. In addition, the support guide portion 212 is formed with an elastic band installation groove 212 'on the radially outer side.

As shown in FIG. 3, the plurality of slide keys 230 are press-fitted into the key fixing grooves 211 ′ of the jaw 210 to be fixed and installed, or fixedly installed by the fixing means.

3 and 4, the cone 220 is fixed to the upper end of the connecting rod 201 via the shaft 203 is configured to reciprocate together, a plurality of key slide grooves 221 on the outer surface ) Is formed. The key slide groove 221 is inserted into the key slide groove 221, the sliding contact in the lateral direction, the key slide groove in the radially outward movement of the jaw 210 due to the axial downward movement of the cone 220 ( It is configured to guide the radial movement of the jaw 210 without lateral fluctuations by sliding the side wall slide surfaces 221, which are both side wall portions of the 221, to both sides protruding outward from the slide key 230.

In addition, slide inclined surfaces 215 and 225 are formed around the key slide groove 221 of the cone 220 and around the key fixing groove 211 ′ of the jaw 210 so that the jaw 210 moves downward. The outer radial movement of

In addition, the fixing method of the cone 220 to the shaft 203, as shown in Figs. 3 and 4, the lower jaw portion 203 'and the upper fixing screw portion 203 "and the fixing nut of the shaft 203. 204. That is, the jaw portion 203 'is formed on the lower circumference of the shaft 203 so that the cone 220 is inserted and hooked, and the central through-hole of the cone 220 is moved thereon. After insertion from the top of the 203, the cone 220 is fixed to the outer circumference of the shaft 203 by fastening the fixing nut 204 to the fixing screw portion 203 "formed at the upper end of the shaft 203.

The connecting rod 201 of the fluid cylinder is fixed to the shaft 203 through the fixing nut 202 so that the shaft reciprocates up and down with the connecting rod 201.

The support blocks 240 and 250 may include an upper support block 250 and a lower support block 240 in FIG. 3. The lower support block 240 is formed in a U-shaped cross-section through which the shaft 203 passes through the central portion thereof, and the support guide portion 212 of the jaw 210 described above as an inner radial shape of the lower support block 240. The bottom of the) is arranged to contact, the upper support block 250 is installed in a form covering the top with a sliding tolerance and the upper surface of the support guide portion 212. The upper support block 250 and the lower support block 240 installed as described above are fixed to the base plate 205 using fixing bolts 243 and 253.

The elastic band 270, the support guide portion 212 of each jaw 210 described above to return each jaw 210 from the expanded position to the retracted position, as shown in Figures 3 and 5 and 6 It is installed in the elastic band installation groove (212 ').

Meanwhile, as shown in FIG. 5, the slide key 230 of the jaw 210 is inserted into the key slide groove 221 of the cone 220, and each jaw 210 is provided on the slide inclined surface 215 of the jaw 210. When the elastic band 270 described above is installed in the elastic band installation groove 212 'while the slide inclined surface 215 is contacted, the same elastic force acts on the plurality of jaws 210 at the same time, so that each jaw 210 is operated. It will be set uniformly.

The expansion device 200 configured and set as described above inserts the shells 50 and 90 into the outer circumferential surface of the jaw 210 in the contracted position, and lowers the connecting rod 201 by operating a reciprocating mechanism such as a fluid cylinder. The cone 220 descends together with the shaft 203, and in FIG. 3, the outer surface of the slide key 230 interacts with the slide inclined surface 225 ′ of the key slide groove 221, or FIG. 5. In the interaction between the slide inclined surface 225 of the cone 220 and the slide inclined surface 215 of the jaw 210, each jaw 210 in the support guide portion 212, the upper support block 250 and the lower support block ( The shells 50 and 90 are enlarged by being moved radially outward while being guided by the inner surface of the 240. In addition, when moving in the radial direction, the side wall slide surface 221 of the key slide groove 221 is guided by the side wall surface of the slide key 230, there is no fluctuation of the jaw 210 in the circumferential direction more precisely radial direction Is moved to the diameter of the shell (50, 90) can be made precisely. As the diameter of the inner circumferential surface is expanded in this way, the shell is compressed to a precise inner circumferential surface to form shells 50 and 90 having a predetermined roundness or more.

Then, when the reciprocating mechanism such as a fluid cylinder is operated in reverse to raise the connecting rod 201, the cone 220 is raised together with the shaft 203, and the jaws 210 are operated by the action of the elastic band 270. Are coincident with each other and move radially inwards uniformly.

In this way, the roundness of the circles formed by the outer circumferential surfaces of the plurality of jaws 210 can be kept constant, and thus the roundness of the enlarged shells 50 and 90 is also improved, and further, the jaws in the retracted position. The roundness of 210 is improved, so that the shells 50 and 90 can be easily loaded and unloaded even if the amount of radial movement of the jaw 210 is reduced.

As described above, the shells 50 and 90 having enlarged inner diameters can be removed from the outer circumferential surfaces of the plurality of jaws 210, and the enlarged shells 50 and 90 are transferred for the next process, and the shells of the previous processes. 50 and 90 are inserted into the plurality of jaws 210 again, and the above-described process is repeated.

As such, in order to manufacture the middle shell of the air-conditioning rotary compressor by the roll bending manufacturing method, the sheet is roll-bended with the blank 10 and subjected to a shearing process to weld both ends of the brushed shell 50 to the primary expansion. After performing the step S6, or after the first expanding step S6, the second expanded step S12 may be precisely performed on the burred shell 90 having processed the piercing hole, the burring part, and the like. It becomes possible.

According to the configuration and operation of the expansion device 200 for sizing the middle shell of the rotary air conditioner rotary compressor having the return jaw by the elastic band according to the embodiment of the present invention, particularly with the elastic band 270 The jaw 210 of the expanding device 200 can be set to a further improved roundness by the configuration of the plurality of jaws 210, the cone 220, and the like, and the plurality of jaws 210 can be simultaneously returned. And the elastic force can be applied uniformly, there is an effect such that more precise expansion is possible.

Claims (2)

In order to manufacture the middle shell of the air-conditioning rotary compressor by the roll bending manufacturing method, the sheet is roll-bended with the blank 10 and subjected to a shearing process to weld both ends of the airbrushed brush 50 to the primary expansion step (S6). Air conditioner rotary compressor for secondary expansion step (S12) of the burnished shell 90 having the piercing hole, burring part, etc. to be processed after the first expansion step (S6). In an expansion device for sizing a middle shell of: It is arranged in the circumferential direction and the shell 50,90 before expansion is inserted in the contracted position, and an outer circumferential surface is formed to enlarge the shell 50,90 to a predetermined diameter in the expanded position, and between the contracted position and the expanded position. It is configured to radially move the fixing groove 211 ', and forms a processing portion 211 formed with a key fixing groove 211' on the inner surface, and the horizontal portion of the L-shaped cross-section formed together with the processing portion 211, A plurality of jaws 210 configured to guide the radial motion of the processing part 211 and include a support guide part 212 formed with an elastic band installation groove 212 'outward; A plurality of slide keys 230 fixed to the key fixing grooves 211 ′; Connecting rod 201 of the fluid cylinder to move the fixing groove (211 ') up and down; Fixed through the shaft 203 at the upper end of the connecting rod (201) to move the fixing groove (211 ') together, the slide key 230 is inserted, sliding contact in the radial movement during the downward movement in the axial direction A cone 220 having a plurality of key slide grooves 221 inclined on an inner surface thereof so as to be converted into a switch; An upper support block 250 and a lower part fixed to the base plate 205 using fixing bolts 243 and 253, supporting the support guide portion 212 of the jaw 210 in the middle, and guiding its radial movement. Support block 240; And, In the elastic band, characterized in that it comprises an elastic band 270 is installed in the elastic band installation grooves 212 'of each jaw 210 to return each jaw 210 from the expansion position to the retracted position. Expanding device for sizing the middle shell of air-conditioning rotary compressor with return jaw. According to claim 1, wherein the shaft 203 is fixed to the upper and lower fixing grooves (211 ') movement with the connecting rod 201 via the fixing nut 202 to the connecting rod 201, the cone 220 The central through hole is inserted into and coupled to the outer circumference of the shaft 203, and the cone 220 is formed by using the lower jaw portion 203 'and the upper fixing screw portion 203 "and the fixing nut 204 of the shaft 203. Is fixed to the shaft (203), the slide slopes (215, 225) formed around the slide key 230 and the key slide groove 221, the air conditioner having a return jaw by the elastic band characterized in that the cam action is performed. Expanding device for sizing the middle shell of rotary compressors.