CN110539161B - Compressor assembly assembling apparatus and compressor manufacturing method - Google Patents

Abstract

A compressor assembly assembling apparatus and a compressor manufacturing method are provided to easily improve manufacturing efficiency. The compressor assembly assembling apparatus of the present invention includes a measuring unit for an eccentric shaft, the measuring unit for an eccentric shaft including: a support part which supports the eccentric shaft to be rotatable around a rotation center line of the shaft body; a driving part which enables the eccentric shaft to rotate around the rotation center line of the shaft main body; a measuring section in which a first contact abutting against an outer peripheral surface of the eccentric shaft eccentric section and a second contact abutting against an outer peripheral surface of the eccentric shaft main body are spaced 180 degrees in a circumferential direction around a rotation center line of the eccentric shaft main body, and move in a preset direction perpendicular to the rotation center line of the shaft main body with the rotation of the eccentric shaft, and output position information, and a converting section acquires a distance between a position of the eccentric section of the eccentric shaft and a position of the shaft main body based on a correspondence between the position information and a radial dimension of a portion on the outer peripheral surface of the eccentric shaft; and a control part for controlling the action of the compressor assembly assembling equipment.

Description

Compressor assembly assembling apparatus and compressor manufacturing method

Technical Field

The invention relates to a compressor assembly assembling device and a compressor manufacturing method.

Background

Conventionally, there is a compressor including: an eccentric shaft having a shaft body and an eccentric portion protruding radially outward from an axial center portion of the shaft body; a first bearing that supports one end side of the eccentric shaft; a cylinder having a housing chamber housing the eccentric portion; and a second bearing that supports the other end side of the eccentric shaft, wherein the first bearing, the cylinder, and the second bearing are coupled together by, for example, a screw or the like in a state where the first bearing supports one end side of the eccentric shaft, the cylinder accommodates the eccentric portion, and the second bearing supports the other end side of the eccentric shaft.

In the above-described compressor, as shown in fig. 10, the distance D between the portion of the eccentric portion 312X of the eccentric shaft having the largest radial dimension and the portion of the shaft main body 311X that is 180 degrees apart from the portion in the circumferential direction around the rotation center line LX thereof is often used as a reference for positioning when the first bearing, the cylinder block, and the second bearing are assembled together, and therefore, it is usually necessary to measure the distance D in advance before assembling the eccentric shaft, the bearing, the cylinder block, and the second bearing.

However, in the above-described compressor, since the shaft main body 311X of the eccentric shaft protrudes from the eccentric portion 312X toward both ends in the axial direction, measurement of the radial dimension of the eccentric portion 312X of the eccentric shaft is hindered, and thus the conventional measurement efficiency is generally low, which significantly restricts the manufacturing efficiency of the compressor.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a compressor module assembling apparatus and a compressor manufacturing method which can easily improve the manufacturing efficiency of a compressor.

In order to achieve the above object, the present invention provides a compressor assembly assembling apparatus, wherein the compressor assembly has an eccentric shaft having a shaft main body and an eccentric portion eccentric with respect to a rotation center line of the shaft main body, and the compressor assembly assembling apparatus includes a measuring unit for the eccentric shaft, the measuring unit for the eccentric shaft including: a support portion for supporting the eccentric shaft to be rotatable about a rotation center line of the shaft main body; a drive unit for rotating the eccentric shaft supported by the support unit about a rotation center line of the shaft body; a measuring section having a first contact, a second contact, and a converting section, the first contact and the second contact being provided at a distance of 180 degrees in a circumferential direction around a rotation center line of a shaft body of an eccentric shaft supported by the support section, the first contact abutting against an outer circumferential surface of an eccentric section of the eccentric shaft, the second contact abutting against an outer circumferential surface of the shaft body of the eccentric shaft, and the first contact and the second contact being provided so as to be movable in a predetermined direction perpendicular to the rotation center line of the shaft body of the eccentric shaft in accordance with rotation of the eccentric shaft supported by the support section and outputting position information or related information corresponding to the position information, the converting section acquiring a distance between a position of the eccentric section and a position of the shaft body section based on a correspondence relationship between the position information or the related information output by the first contact and the second contact and a radial dimension of the section on the outer circumferential surface of the eccentric shaft, wherein the eccentric portion means a portion on an outer peripheral surface of an eccentric portion of the eccentric shaft, and the shaft body portion means a portion on an outer peripheral surface of a shaft body of the eccentric shaft 180 degrees apart from the eccentric portion in a circumferential direction around a rotation center line of the shaft body; and a control unit that controls an operation of the compressor assembly assembling device.

Here, the "related information" may be voltage information, current information, or the like (for example, a piezoelectric sensor that is provided in contact with the contact and outputs the related information by the piezoelectric sensor), and the "correspondence between the position information or the related information output by the first contact and the second contact and the radial dimension of the portion on the outer peripheral surface of the eccentric shaft" may be acquired in advance by experiments, formulas, or the like.

According to the compressor assembly assembling apparatus of the above configuration, the measuring unit for the eccentric shaft includes: a support portion for supporting the eccentric shaft to be rotatable about a rotation center line of the shaft main body; a drive unit for rotating the eccentric shaft supported by the support unit about the rotation center line of the shaft body; a measuring section having a first contact, a second contact, and a converting section, the first contact and the second contact being provided so as to be spaced apart by 180 degrees in a circumferential direction around a rotation center line of a shaft body of an eccentric shaft supported by a support section, the first contact abutting against an outer circumferential surface of an eccentric section of the eccentric shaft, the second contact abutting against the outer circumferential surface of the shaft body of the eccentric shaft, and the first contact and the second contact being provided so as to be movable in a predetermined direction perpendicular to the rotation center line of the shaft body of the eccentric shaft in accordance with rotation of the eccentric shaft supported by the support section and outputting position information or related information corresponding to the position information, the converting section acquiring a distance between a position of the eccentric section and a position of the shaft body section based on correspondence between the position information or the related information output from the first contact and the second contact and a radial dimension of the section on the outer circumferential surface of the eccentric shaft, wherein the position is a position on the outer circumferential surface of the eccentric section of the eccentric, the shaft body part is a part on the outer peripheral surface of the shaft body of the eccentric shaft, which is 180 degrees apart from the eccentric part in the circumferential direction around the rotation center line of the shaft body; and a control unit for controlling the operation of the compressor assembly equipment; therefore, the distance between the portion of the eccentric shaft having the largest radial dimension and the portion of the shaft body that is 180 degrees apart from the portion in the circumferential direction around the rotation center line thereof can be easily obtained by the measuring portion by simply supporting the eccentric shaft on the supporting portion of the measuring unit for the eccentric shaft, bringing the first contact of the measuring portion into contact with the outer circumferential surface of the eccentric portion of the eccentric shaft, bringing the second contact of the measuring portion into contact with the outer circumferential surface of the shaft body of the eccentric shaft, and then driving the eccentric shaft to rotate (for example, rotate one turn) by the driving portion, thereby improving the manufacturing efficiency of the compressor.

Further, in the compressor assembly assembling apparatus of the present invention, it is preferable to include a pressing portion provided so as to be capable of coming into contact with the eccentric shaft from both sides in a radial direction of the eccentric shaft supported by the supporting portion together with the supporting portion.

According to the compressor assembly assembling apparatus of the above configuration, since the pressing portion is provided to be capable of coming into contact with the eccentric shaft from both sides in the radial direction of the eccentric shaft supported by the supporting portion together with the supporting portion, the eccentric shaft can be stably held by the pressing portion and the supporting portion, and the accuracy and reliability of the measurement work performed on the eccentric portion of the eccentric shaft can be improved.

Further, in the compressor assembly assembling apparatus of the present invention, it is preferable that the pressing portion is provided to be switchable between a first position where the pressing portion is close to the supporting portion and is brought into contact with the eccentric shaft from both sides in a radial direction of the eccentric shaft supported by the supporting portion together with the supporting portion, and a second position where the pressing portion is distant from the supporting portion to be separated from the eccentric shaft supported by the supporting portion.

According to the compressor unit assembling apparatus of the above configuration, the pressing portion is provided so as to be switchable between the first position where the pressing portion abuts against the eccentric shaft supported by the supporting portion from both sides in the radial direction of the eccentric shaft and the second position where the pressing portion is separated from the eccentric shaft supported by the supporting portion, and therefore, the eccentric shaft can be easily provided to the supporting portion by switching the pressing portion to the first position, and the operability of the measurement work performed on the eccentric portion of the eccentric shaft is excellent.

Further, in the compressor assembly assembling apparatus of the present invention, it is preferable to include a transmission belt that constitutes a part of the driving portion and that constitutes the pressing portion.

According to the compressor assembly assembling equipment with the structure, the transmission belt which forms a part of the driving part and forms the pressing part is included, so that the whole structure of the equipment is simplified, and the manufacturing cost is reduced.

Further, in the compressor assembly assembling apparatus of the present invention, it is preferable to include an assembling unit including: a centering portion having a support table for supporting a bearing and a cylinder block constituting a part of the compressor unit so that the bearing and the cylinder block are stacked in an up-down direction and an axis of an inner hole of the bearing and an axis of an inner hole of the cylinder block extend in an up-down direction, and a correcting portion for relatively moving the bearing and the cylinder block supported by the support table in a horizontal plane to perform a centering operation; and an assembling portion that fixes the bearing and the cylinder block after the centering operation so as not to move relative to each other by using the connecting member.

The compressor assembly assembling apparatus according to the above structure includes an assembling unit including: a centering unit having a support table for supporting a bearing and a cylinder block constituting a part of the compressor unit so that the bearing and the cylinder block are stacked in an up-down direction and an axis of an inner hole of the bearing and an axis of an inner hole of the cylinder block extend in the up-down direction, and a correcting unit for relatively moving the bearing and the cylinder block supported by the support table in a horizontal plane to perform a centering operation; and an assembling portion which fixes the bearing and the cylinder block after the centering operation to be incapable of relative movement by using the connecting member; therefore, the centering work and the fixing work of the bearing and the cylinder block can be conveniently completed by the assembling unit, thereby improving the manufacturing efficiency of the compressor.

Further, in the compressor assembly assembling apparatus of the present invention, it is preferable that the assembling unit includes: a tray having a bottom plate portion on which a bearing and a cylinder block constituting a part of the compressor unit are placed, the bottom plate portion being provided with a through hole penetrating in a vertical direction; and an elevating unit that elevates the tray, on which the bearing and the cylinder are placed so that the bearing and the cylinder are stacked in the vertical direction, between a lowered position at which a part of the support table passes through the through hole of the tray to lift the bearing and the cylinder from the tray and a raised position at which a part of the support table retreats from the through hole of the tray to be separated from the bearing and the cylinder.

According to the compressor assembly assembling apparatus of the above structure, the assembling unit includes: a tray having a bottom plate portion on which a bearing and a cylinder block constituting a part of the compressor unit are placed, the bottom plate portion being provided with a through hole penetrating in a vertical direction; and a lifting unit that lifts and lowers a tray, on which the bearings and the cylinder are placed in a manner such that the bearings and the cylinder are stacked in the vertical direction, between a lowered position, at which a part of the support table passes through the through-hole of the tray to lift the bearings and the cylinder from the tray, and a raised position, at which a part of the support table retreats from the through-hole of the tray to be separated from the bearings and the cylinder; therefore, the bearing and the cylinder block can be conveniently transported between the assembling unit and other units by using the tray, and the manufacturing efficiency of the compressor is improved.

Further, in the compressor-assembly assembling apparatus of the present invention, it is preferable that the centering portion includes a position measuring portion that measures a distance between an inner wall of the bearing and an inner wall of the cylinder block opposed to the inner wall, and the correcting portion relatively moves the bearing supported by the support table and the cylinder block in a horizontal plane so that the distance is within a preset range based on a measurement result of the position measuring portion.

According to the compressor assembly assembling apparatus of the above configuration, the centering portion includes a position measuring portion that measures a distance between an inner wall of the bearing and an inner wall of the cylinder block opposite to the inner wall, and the correcting portion relatively moves the bearing supported on the support table and the cylinder block in a horizontal plane based on a measurement result of the position measuring portion so that the distance is within a preset range; therefore, the centering work and the fixing work of the bearing and the cylinder block can be more conveniently accomplished by the assembling unit, thereby improving the manufacturing efficiency of the compressor.

Further, in the compressor assembly assembling apparatus of the present invention, it is preferable that the position measuring portion includes a pneumatic measuring head having a shaft-shaped portion for inserting the inner bore of the bearing and the inner bore of the cylinder, the shaft-shaped portion has an air passage and first and second nozzle holes communicating with the air passage, the first and second nozzle holes are arranged in the up-down direction so as to correspond to the inner bore of the bearing and the inner bore of the cylinder, respectively, and open at positions on the outer peripheral surface of the shaft-shaped portion that are spaced 180 degrees apart in the circumferential direction.

According to the compressor assembly assembling equipment with the structure, the position measuring part comprises the pneumatic measuring head, the pneumatic measuring head is provided with the shaft-shaped part used for inserting the inner hole of the bearing and the inner hole of the cylinder body, the shaft-shaped part is provided with the air passage and the first spray hole and the second spray hole which are communicated with the air passage, the first spray hole and the second spray hole are arranged in the vertical direction in a mode of respectively corresponding to the inner hole of the bearing and the inner hole of the cylinder body, and the first spray hole and the second spray hole are opened at the positions, which are 180 degrees apart in the circumferential direction, of the outer circumferential surface of the shaft-shaped part, therefore, the distance between the inner wall of the bearing and the inner wall of the cylinder body opposite to the inner wall can be measured.

Further, in the compressor-unit assembling apparatus of the present invention, it is preferable that the centering portion includes a three-jaw mechanism including three jaws that drive one of a bearing and a cylinder block supported by the support table by coming into contact with the one of the bearing and the cylinder block, and the jaws are formed in a shape that is tapered as they come closer to the bearing and the cylinder block supported by the support table, or in a Y-shape.

According to the compressor assembly assembling apparatus of the above configuration, the correcting portion includes the three-jaw mechanism including the three jaws that drive one of the bearing and the cylinder block by coming into contact with the one of the bearing and the cylinder block supported by the support table, the jaws being formed in a shape that is tapered as closer to the bearing and the cylinder block supported by the support table, or formed in a Y-shape; therefore, one of the bearing and the cylinder block can be stably held and driven by the correction portion, which contributes to improvement in centering accuracy of the bearing and the cylinder block, thereby further improving assembly accuracy of the bearing and the cylinder block.

Further, in order to achieve the above object, the present invention provides a method of manufacturing a compressor including an eccentric shaft having a shaft main body and an eccentric portion eccentric with respect to a rotation center line of the shaft main body, the method including a measuring step of measuring by a measuring portion while supporting the eccentric shaft rotatably about the rotation center line of the shaft main body by a supporting portion and driving the eccentric shaft to rotate by a driving portion, the measuring portion having a first contact, a second contact, and a converting portion, the first contact and the second contact being provided 180 degrees apart in a circumferential direction about the rotation center line of the shaft main body of the eccentric shaft supported by the supporting portion, the first contact abutting against an outer peripheral surface of the eccentric portion of the eccentric shaft, the second contact abutting against an outer peripheral surface of the shaft main body of the eccentric shaft, and the first contact and the second contact are provided so as to be movable in a predetermined direction perpendicular to a rotation center line of a shaft body of the eccentric shaft in accordance with rotation of the eccentric shaft supported by the support portion, and output position information or related information corresponding to the position information, and the conversion portion acquires a distance between an eccentric portion on an outer peripheral surface of an eccentric shaft of the eccentric shaft and a shaft body portion on an outer peripheral surface of the shaft body of the eccentric shaft, the eccentric portion being a portion spaced 180 degrees apart from the eccentric portion in a circumferential direction around the rotation center line of the shaft body, based on a correspondence between the position information or related information output by the first contact and the second contact and a radial dimension of the portion on the outer peripheral surface of the eccentric shaft.

(effect of the invention)

According to the present invention, the distance between the portion of the eccentric shaft having the largest radial dimension and the portion of the shaft body that is 180 degrees apart from the portion in the circumferential direction around the rotation center line thereof can be easily obtained by the measuring section by simply supporting the eccentric shaft on the supporting portion of the measuring unit for the eccentric shaft, bringing the first contact of the measuring section into contact with the outer circumferential surface of the eccentric portion of the eccentric shaft, bringing the second contact of the measuring section into contact with the outer circumferential surface of the shaft body of the eccentric shaft, and then driving the eccentric shaft to rotate (for example, rotate one turn) by the driving section, thereby improving the manufacturing efficiency of the compressor.

Drawings

Fig. 1 is a perspective view schematically showing the overall structure of a measuring unit for an eccentric shaft in a compressor assembly assembling apparatus according to an embodiment of the present invention.

Fig. 2 is a perspective view schematically showing the main structure of the table included in the eccentric shaft measuring unit, and shows a state where the eccentric shaft is not provided and the pressing portion is at the second position.

Fig. 3 is a perspective view schematically showing a main structure of a table included in the eccentric shaft measuring unit, and shows a state where the eccentric shaft is provided and the pressing portion is at the second position.

Fig. 4 is a perspective view schematically showing a main structure of a table included in the eccentric shaft measuring unit, and shows a state where the eccentric shaft is provided and the pressing portion is at the first position.

Fig. 5 is a perspective view schematically showing a main part of a measuring section included in the eccentric shaft measuring unit.

Fig. 6 is a perspective view schematically showing the overall structure of an assembly unit in the compressor assembly assembling apparatus according to the embodiment of the present invention.

Fig. 7 is a plan view schematically showing a centering portion in the compressor package assembling apparatus.

Fig. 8 is a partial front sectional view schematically showing the centering portion in the above-described assembled unit, and shows a state in which the compressor assembly is provided in the centering portion.

Fig. 9 is a partial front sectional view schematically showing a modification of the compressor module assembling apparatus according to the embodiment of the present invention, and shows a state in which the compressor module is provided in the centering portion.

Fig. 10 is a side view showing an example of a conventional eccentric shaft.

(symbol description)

100 measuring unit for eccentric shaft

110 working table

111 supporting seat

1110 body part

1111 support frame

11111 first support part

11112 second support part

11113 third support part

11114 fourth support part

11115 fifth support part

11116 rod part

11117 Cylinder

11118 Belt wheel

11119 Belt wheel

112 drive part

1121 motor

1122 drive belt

113 measurement unit

1131 seat

1132 contact

1133 rotating rod

1134 light sensor

114 cover part

1141 opening part

120 frame part

121 ceiling part

122 leg part

1231 upper beam part

1232 lower beam part

124 bottom plate part

130 caster

200 assembly unit

210 frame part

220 centering part

221 first correcting part

222 second correcting part

223 support table

2231 column-shaped body

2232 clamping part

224 platform part

2243 claw

225 first drive part

226 second drive part

227 position measuring part

2271A first nozzle

2272A first nozzle

2273 gas path

230 assembling part

240 lifting part

250 control part

261 display

262 rotating arm

264 guide rail part

270 connecting frame part

271 first connection frame

272 second connection frame

273 connecting rod

280 tray

281 bottom plate part

2811 through hole

290 lifting part

300 compressor assembly

310 eccentric shaft

311 axle body

312 eccentric part

320 bearing

330 cylinder body

340 screw

Detailed Description

Next, a compressor unit assembling machine according to an embodiment of the present invention will be described with reference to fig. 1 to 8, in which fig. 1 is a perspective view schematically showing an overall structure of an eccentric shaft measuring unit in the compressor unit assembling machine according to the embodiment of the present invention, fig. 2 is a perspective view schematically showing a main body structure of a table included in the eccentric shaft measuring unit, showing a state where an eccentric shaft is not provided and a pressing portion is at a second position, fig. 3 is a perspective view schematically showing a main body structure of a table included in the eccentric shaft measuring unit, showing a state where an eccentric shaft is provided and the pressing portion is at a second position, fig. 4 is a perspective view schematically showing a main body structure of a table included in the eccentric shaft measuring unit, showing a state where the eccentric shaft is provided and the pressing portion is at a first position, fig. 5 is a perspective view schematically showing a main portion of a measuring portion included in the eccentric shaft measuring unit, fig. 6 is a perspective view schematically showing the overall structure of an assembly unit in a compressor assembly assembling apparatus according to an embodiment of the present invention, fig. 7 is a plan view schematically showing a centering portion in the compressor assembly assembling apparatus, and fig. 8 is a partial front sectional view schematically showing the centering portion in the assembly unit, and shows a state in which a compressor assembly is provided in the centering portion.

Here, for convenience of explanation, three directions orthogonal to each other are set as an X direction, a Y direction, and a Z direction, and one side of the X direction is set as X1, the other side of the X direction is set as X2, one side of the Y direction is set as Y1, the other side of the Y direction is set as Y2, one side of the Z direction is set as Z1, and the other side of the Z direction is set as Z2, and the Z direction corresponds to an actual up-down direction, and a Z1 direction side corresponds to an actual up side, a Z2 direction side corresponds to an actual down side, and a direction perpendicular to the Z direction corresponds to an actual horizontal direction.

Further, taking the compressor assembly 300 shown in fig. 3 and 8 as an example for explanation, the compressor assembly 300 includes: an eccentric shaft 310 including a shaft main body 311 and eccentric portions 312 protruding radially outward from an axial center portion of the shaft main body 311 (in fig. 3, two eccentric portions are provided at intervals along the shaft main body 311, but the present invention is not limited thereto, and may include only one eccentric portion, or may include three or more eccentric portions); a bearing 320, the bearing 320 having an inner hole (in the example shown in fig. 8, the axis of the inner hole extends in the Z direction) for supporting one end side of an eccentric shaft (not shown); and a cylinder 330 having an inner hole (an axis of the inner hole extends in the Z direction in the example shown in fig. 8) for receiving the eccentric portion 312, and coupled to the bearing 320 by a screw 340 (only one is shown in fig. 8, but not limited thereto, and a plurality of them may be provided).

(integral Structure of compressor Assembly Equipment)

The compressor assembly assembling apparatus of the present embodiment includes an eccentric shaft measuring unit 100 (see fig. 1) and an assembling unit 200 (see fig. 6), wherein the eccentric shaft measuring unit 100 measures a radial dimension of a portion of an outer circumferential surface of an eccentric shaft 310, and the assembling unit 200 performs centering work and fixing work on a bearing 320 and a cylinder block 330.

Here, the compressor unit assembly facility includes a control unit, not shown, which controls the operation of the compressor unit assembly facility.

(construction of measuring Unit for eccentric shaft)

As shown in fig. 1, the measurement unit 100 for an eccentric shaft includes: a work table 110; a frame portion 120 for supporting the table 110 from the Z2 direction side; and casters 130 provided on the Z2 direction side of the frame portion 120.

Further, as shown in fig. 1 to 5, the table 110 includes: a support portion for supporting eccentric shaft 310 to be rotatable about the rotation center line of shaft body 311; a driving unit 112 for rotating the eccentric shaft 310 supported by the supporting unit about the rotation center line of the shaft body 311 by the driving unit 112; and a measuring section 113, the measuring section 113 having a contact 1132 and a converting section, the contact 1132 being provided in contact with an outer peripheral surface of the eccentric shaft 310 supported by the support section, and moving in a predetermined direction perpendicular to a rotation center line of the shaft main body 311 of the eccentric shaft 310 with rotation of the eccentric shaft 310 and outputting position information or related information corresponding to the position information, the converting section acquiring a radial dimension of a portion on the outer peripheral surface of the eccentric shaft 310 based on a correspondence relationship between the position information or the related information output by the contact 1132 and a radial dimension of the portion on the outer peripheral surface of the eccentric shaft 310. Specifically, for example, a table showing a correspondence relationship between position information (obtained by a distance sensor, for example) of contact 1132 and a radial dimension of a portion on the outer peripheral surface of eccentric shaft 310 is created in advance and stored in a storage area of a conversion unit (a control circuit board or the like), and the conversion unit acquires the radial dimension of the portion on the outer peripheral surface of eccentric shaft 310 based on the position information output from contact 1132, based on the table (naturally, the radial dimension of the portion on the outer peripheral surface of eccentric shaft 310 may be acquired by an equation instead of the table). Further, as shown in fig. 2, the support portion includes a first support portion 11111, a second support portion 11112, and a third support portion 11113, and the first support portion 11111 is provided separately from the second support portion 11112 (separately in the X direction in the illustrated example) to support the eccentric shaft 310 from both sides in the extending direction of the rotation center line of the shaft main body 311 (coinciding with the X direction in the illustrated example); and the third support part 11113 is positioned between the first support part 11111 and the second support part 11112, to support the middle portion of eccentric shaft 310 in the extending direction of the rotation center line of shaft body 311, second support 11112 and third support 11113 abut against eccentric section 312 of eccentric shaft 310 from both sides in the direction in which the rotation center line of shaft body 311 of eccentric shaft 310 supported by the supports extends (in the illustrated example, table 110 includes support base 111, and support base 111 includes main body 1110 and support bracket 1111, main body 1110 is formed into a trapezoid whose upper bottom is substantially parallel to the Y direction when viewed in the X direction, and has support surface SS facing the Y1 direction and Z1 direction, and support bracket 1111 includes bottom plate 11110 fixed to support surface SS, and plate section constituting first support 11111, plate section constituting second support 11112, and plate section constituting third support 11113 protruding from bottom plate 11110 in the Y1 direction and Z1 direction). The driving unit 112 includes a motor 1121 and a belt 1122, wherein the belt 1122 constitutes a part of a pressing portion, is driven to rotate by the motor 1121, and is provided so as to be switchable between a first position shown in fig. 4, in which the belt 1122 is close to the support portions (the first support portion 11111, the second support portion 11112, and the third support portion 11113) and is brought into contact with the eccentric shaft 310 from both sides in the radial direction of the eccentric shaft 310 supported by the support portions (in the illustrated example, the belt 1122 is brought into contact with the outer peripheral surface of a portion of the eccentric shaft 310 other than the eccentric portion 312, but not limited thereto), and a second position shown in which the belt 1122 is separated from the support portions (the first support portion 11111, the second support portion 11112, and the third support portion 11113) and is separated from the eccentric shaft 310 supported by the support portions (in the illustrated example, the motor 1121 is provided on the support bracket 1111 so as to extend in the output shaft X direction, the support 1111 has a plate-like portion constituting a fourth support portion 11114 and a plate-like portion constituting a fifth support portion 11115 projecting from the bottom plate portion 11110 in the Y1 direction and the Z1 direction, the fourth support portion 11114 and the fifth support portion 11115 are arranged at intervals in the X direction and are closer to the Z1 direction side than the first support portion 11111, the second support portion 11112 and the third support portion 11113, a rod portion 11116 is supported between the fourth support portion 11114 and the fifth support portion 11115 so as to be rotatable about an axis line coinciding with the axis line of the output shaft of the motor 1121, one end of the rod portion 11116 is a free end, the other end is connected to one end of a telescopic cylinder 11117 so as to be rotatable, the other end of the cylinder 11117 is connected to the main body portion 1110 or the support frame 1110, and pulleys 11118 driven by the motor 1121 to rotate about an axis line coinciding with the output shaft line of the motor 1121 are provided on the X1 direction side of the fourth support portion 11114 and the X2 direction side of the fifth support portion 11115, respectively, a plurality of pulleys 11119 are provided on both sides of the rod part 11116 in the X direction so as to be rotatable about an axis parallel to the axis of the output shaft of the motor 1121, and a belt 1122 is stretched over the pulleys 11118 and the pulleys 11119 on both sides of the rod part 11116 in the X direction, whereby the rod part 11116 is rotatable about an axis coincident with the axis of the output shaft of the motor 1121 by expansion and contraction of the cylinder 11117, and the belt 1122 is driven to switch between the first position and the second position. Two measurement units 113 are provided corresponding to the number of eccentric portions 312 of eccentric shaft 310 (in the illustrated example, two eccentric portions 312 of eccentric shaft 310 are provided at intervals in the X direction, and correspondingly, two measurement units 113 are also provided at intervals in the X direction); as shown in fig. 5, each of the measuring units 113 includes a seat 1131, a contact 1132, a rotating lever 1133, and an optical sensor 1134, in which the seat 1131 is fixed to a support 1111 and protrudes from a main body 1110 in the Y1 direction and the Z1 direction, the contact 1132 is provided in the seat 1131 so as to be movable in the direction perpendicular to the X direction, that is, in the above-mentioned predetermined direction (in the illustrated example, in accordance with the radial direction of the shaft main body 311 of the eccentric shaft 310 supported by the support unit), and has a function of returning to the original position (including a return spring, for example), the rotating lever 1133 is provided in the seat 1131 so as to abut against the outer peripheral surface of the eccentric portion 312 of the eccentric shaft 310 supported by the support unit (in the illustrated example, the roller provided in the rotating lever 1133 abuts against the outer peripheral surface of the eccentric portion 312 of the eccentric shaft 310), and is rotatable about an axis parallel to the rotation center line (in the X direction) of the shaft main, the contact 1132 includes a first contact and a second contact, which are provided at an interval of 180 degrees in a circumferential direction around a rotation center line of the shaft main body 311 of the eccentric shaft 310 supported by the support portion, the first contact abutting against an outer circumferential surface of the eccentric portion 312 of the eccentric shaft 310, the second contact abutting against an outer circumferential surface of the shaft main body 311 of the eccentric shaft 310), and the optical sensor 1134 has a light emitting portion and a light receiving portion, and is switched on and off depending on whether or not the space between the light emitting portion and the light receiving portion is blocked by the rotating lever 1133; also, the rotating lever 1133 is provided: switching the optical sensor 1134 on and off when the rotating lever 1133 is about to abut against the outer peripheral surface of the eccentric portion 132 of the eccentric shaft 130 supported by the support portion, which has the largest radial dimension; further, the control unit controls the driving unit 112 so that the rotation speed of the eccentric shaft 130 supported by the support unit is reduced when the optical sensor 1134 is switched on and off, thereby making it possible to suppress an error caused by a measurement delay of the measurement unit, and to easily and accurately obtain the distance between the portion of the eccentric shaft having the largest radial dimension and the portion of the shaft main body spaced 180 degrees apart from the portion in the circumferential direction around the rotation center line thereof. As shown in fig. 1, table 110 further includes cover portion 114, cover portion 114 is detachably provided on support base 111 so as to cover the support portions and the like from the Y1 direction and the Z1 direction, cover portion 114 has an opening portion 1141, and is provided with a button portion connected to the control portion, and opening portion 1141 exposes first support portion 11111, second support portion 11112, and third support portion 11113 so that eccentric shaft 310 is supported by first support portion 11111, second support portion 11112, and third support portion 11113 via opening portion 1141 in a state where cover portion 114 is provided on support base 111 so as to cover the support portions and the like (in the illustrated example, opening portion 1141 extends in the X direction, and the dimension in the X direction is larger than the axial dimension of eccentric shaft 310).

As shown in fig. 1, the frame portion 120 includes: a top plate portion 121 on which the table 110 is placed, the top plate portion 121 having a thickness direction that coincides with the Z direction and being substantially rectangular when viewed along the Z direction; four leg portions 122, the four leg portions 122 extending from four corners of the top plate portion 121 toward the Z2 direction side; four upper beam portions 1231 that extend perpendicularly to the Z direction and connect the ends of the four legs 122 on the Z1 direction side to each other; four lower beam portions 1232 that extend perpendicularly to the Z direction and connect the ends on the Z2 direction side of the four legs 122 to each other; and a bottom plate portion 124 that is connected to the ends of the four leg portions 122 on the Z2 direction side and the four lower beam portions 1232, that has a thickness direction that coincides with the Z direction, and that is substantially rectangular when viewed along the Z direction.

As shown in fig. 1, caster wheels 130 are provided near the ends of the four leg portions 122 on the Z2 direction side (in the illustrated example, the caster wheels 130 are connected to the bottom plate portion 124 of the frame portion 120 so as to be rotatable about an axis extending in the Z direction).

(Structure of Assembly Unit)

As shown in fig. 6, the assembly unit 200 includes a frame portion 210, and the frame portion 210 is substantially rectangular parallelepiped in shape as a whole. Further, the frame portion 210 is provided with a centering portion 220, an assembling portion 230, an elevating portion 240, and a control portion 250, wherein the centering portion 220 is provided at a position slightly closer to the Z2 direction side than the middle portion in the Z direction of the frame portion 210, the assembling portion 230 and the elevating portion 240 are provided at a position closer to the Z1 direction side than the centering portion 220, and the control portion 250 is provided at a position closer to the Z2 direction side than the centering portion 220. Further, frame portion 210 is provided with a display 261, a rotation arm 262, and a rail portion 264, in which display 261 is connected to a portion of frame portion 210 on the Z1 direction side slightly from the middle portion in the Z direction via rotation arm 262 so as to be rotatable about an axis extending in the Z direction, and rail portion 264 is provided on the Z1 direction side from centering portion 220 of frame portion 210 so as to extend in the Z direction.

Further, as shown in fig. 7 and 8, the centering portion 220 has a support table 223 and a correcting portion, the support table 223 supports the bearing 320 and the cylinder block 330 constituting a part of the compressor module 300 such that the bearing 320 and the cylinder block 330 are stacked in the up-down direction and the axis of the inner hole of the bearing 320 and the axis of the inner hole of the cylinder block 330 extend in the Z direction, and the correcting portion relatively moves the bearing 320 and the cylinder block 330 included in the compressor module 300 supported by the support table 223 in a plane perpendicular to the Z direction to perform a centering operation; and an assembling portion 230, wherein the assembling portion 230 fixes the bearing 320 and the cylinder block 330 after the centering operation by a connecting member (here, a screw 340, but is not limited thereto, and may be a bolt or the like) so as not to move relatively.

Here, as shown in fig. 7, the centering portion 220 includes: a first correcting unit 221 that drives the bearing 320 and the cylinder block 330 in the compressor unit 300 to move relative to each other in the X direction by being driven obliquely (for example, but not limited to, 10 degrees) to the X direction; and a second correcting portion 222 that drives the bearing 320 and the cylinder block 330 in the compressor unit 300 to move relatively in the Y direction by being driven obliquely (for example, but not limited to, 10 degrees) with respect to the Y direction.

As shown in fig. 7 and 8, the centering portion 220 includes: a support table 223, the support table 223 holding the lower cylinder 330 of the bearing 320 and the cylinder 330 which constitute a part of the compressor unit 300; and a platform 224, wherein the platform 224 holds the upper bearing 320 of the bearing 320 and the cylinder 330 which form a part of the compressor assembly 300, and can move in the X direction and the Y direction relative to the support table 223.

As shown in fig. 7 and 8, the first correction unit 221 includes a first contact surface parallel to the Y direction (in the illustrated example, the first correction unit 221 includes a motor, a ball screw driven by the motor, and a slider slidable along the ball screw, the slider having a substantially trapezoidal shape when viewed in the Z direction and a first contact surface), the second correction unit 222 includes a second contact surface parallel to the X direction (in the illustrated example, the second correction unit 222 includes a motor, a ball screw driven by the motor, and a slider slidable along the ball screw, the slider having a substantially trapezoidal shape when viewed in the Z direction and a second contact surface), and the stage unit 224 includes: a first abutted surface which is abutted against the first abutting surface and can move relative to the first abutting surface along the Y direction; and a second abutted surface which is abutted by the second abutting surface and can move relative to the second abutting surface along the X direction.

As shown in fig. 7 and 8, the platform 224 has a hole (in the illustrated example, but not limited to, a central portion of the platform 224 when viewed in the Z direction) that penetrates the platform 224 in the Z direction, supports at least the cylinder block 330 of the compressor module 300 by passing through the support base 223, and accommodates the bearing 320 of the compressor module 300.

As shown in fig. 8, the centering unit 220 includes a position measuring unit 227, and the position measuring unit 227 measures a distance between an inner wall of the bearing 320 supported by the support table 223 and an inner wall of the cylinder block 330 opposed to the inner wall (specifically opposed to a position 180 degrees apart in the circumferential direction), and the correcting units (the first correcting unit 221 and the second correcting unit 222) relatively move the bearing 320 supported by the support table 223 and the cylinder block 330 in a plane perpendicular to the Z direction based on a measurement result of the position measuring unit 227 so that the distance falls within a predetermined range (specifically, so that a deviation of the distance from a position where the radial dimension of the eccentric portion 312 of the eccentric shaft 310 is largest, which is measured by the measuring unit 113 of the eccentric shaft measuring unit 100, and a position where the shaft body 311 is 180 degrees apart in the circumferential direction around the rotation center line thereof falls within a predetermined range). As the position measuring portion 227, here, a pneumatic measuring head is adopted which has a shaft-like portion for inserting the inner hole of the bearing 320 of the compressor assembly 300 and the inner hole of the cylinder 330, the shaft-like portion having an air passage 2273 and first and second nozzle holes 2271 and 2272 communicating with the air passage 2273, the first and second nozzle holes 2271 and 2272 being arranged in the Z direction (i.e., up and down direction) in such a manner as to correspond to the inner hole of the bearing 320 of the compressor assembly 300 supported by the support table 223 and the inner hole of the cylinder 330, respectively, and being opened at positions of the outer peripheral surface of the shaft-like portion which are spaced 180 degrees apart in the circumferential direction.

Further, as shown in fig. 7 and 8, a plurality of clamping portions capable of being gathered or separated in a horizontal plane to clamp or unclamp the bearing 320 of the compressor module 300 supported by the support table 223 are provided in the above-mentioned hole portion of the platform portion 224. Specifically, the platform 224 includes a three-jaw mechanism including three jaws 2243, and the three jaws 2243 abut against the bearing 320 of the compressor unit 300 and the upper bearing 320 of the cylinder 330 from the outer peripheral side to hold the bearing 320 (in the illustrated example, the three jaws 2243 are disposed in a shape that is tapered toward the bearing 320 and the cylinder 330 of the compressor unit 300 supported by the support base 223 as viewed in the Z direction and at an angular pitch of 120 degrees, respectively, and the tip of the jaw 2243 abuts against the upper bearing 320 of the bearing unit 300 and the cylinder 330 from the outer peripheral side to hold the relative positional relationship between the bearing 320 and the cylinder 330 of the compressor unit 300).

As shown in fig. 7, the centering unit 220 includes a first driving unit 225 and a second driving unit 226, the first driving unit 225 and the second driving unit 226 are provided in the X direction with the stage 224 interposed therebetween and are movable in the X direction, wherein the first driving unit 225 is located on the X1 direction side with respect to the stage 224 and drives two of the three claws 2243 located on the X1 direction side to move in the X2 direction, and the second driving unit 226 is located on the X2 direction side with respect to the stage 224 and drives one of the three claws 2243 located on the X2 direction side to move in the X1 direction (in the illustrated example, the first driving unit 225 and the second driving unit 226 are cylinders, respectively).

As shown in fig. 5, the assembling portion 230 extends substantially in the Z direction, penetrates the connecting frame portion 270 in the Z direction, and is connected to the connecting frame portion 270.

The assembly unit 230 has a rotation driving unit at an end on the Z1 direction side thereof, and has a working unit at an end on the Z2 direction side thereof, which is driven by the rotation driving unit to rotate about an axis extending substantially in the Z direction.

As shown in fig. 6, the coupling frame portion 270 includes a first coupling frame 271, a second coupling frame 272, and a link 273, the first coupling frame 271 and the second coupling frame 272 are substantially planar surfaces perpendicular to the Z direction and are provided at intervals from the Z1 direction side toward the Z2 direction side, the assembling portion 230 penetrates the centers of the first coupling frame 271 and the second coupling frame 272 in the Z direction and is coupled to the first coupling frame 271 and the second coupling frame 272, respectively, and the link 273 extends in the Z direction and couples the first coupling frame 271 and the second coupling frame 272 together.

As shown in fig. 6, a guide portion 264 extending in the Z direction is provided above the control portion 250, and the first connection frame 271 and the second connection frame 272 are respectively supported by the guide portion 264 so as to be movable along the guide portion 264 (in the illustrated example, a pair of guide portions 264 are provided at an interval in the X direction, and both ends of the first connection frame 271 and the second connection frame 272 in the X direction are respectively supported by the pair of guide portions 264 so as to be movable in the Z direction).

(example of assembling compressor Unit Using compressor Unit centering Assembly machine)

First, as shown in fig. 3, in a state where the belt 1122 is at the second position, the eccentric shaft 310 is provided to the first support part 11111, the second support part 11112, and the third support part 11113 of the eccentric shaft measuring unit 100, and in this state, the second support part 11112 and the third support part 11113 abut against the eccentric part 312 from both sides in the X direction, the first contact of the measuring part 113 abuts against the outer peripheral surface of the eccentric part 312 of the eccentric shaft 310, and the second contact of the measuring part 113 abuts against the outer peripheral surface of the shaft main body 311 of the eccentric shaft 310.

Next, when a button (not shown) provided in the cover portion 114 is pressed, the air cylinder 11117 is extended under the control of the control portion, and the transmission belt 1122 is switched to the first position, and comes into contact with the eccentric shaft 310 from both sides in the radial direction with the first support portion 11111, the second support portion 11112, and the third support portion 11113. Then, under the control of the control unit, the drive unit 112 operates to rotate the belt 1122, and at the same time, the measurement unit 113 measures the distance between the portion of the eccentric shaft 310 where the radial dimension of the eccentric portion 312 is largest and the portion of the shaft body 311 that is 180 degrees apart from the portion in the circumferential direction around the rotation center line thereof, and transmits the measured distance to the control unit.

Then, as shown in fig. 8, the bearing 320 is disposed above the cylinder block 330 in such a manner that the axis of the inner hole of the first bearing 320 substantially coincides with the axis of the cylinder block 330, and the screw 340 is screwed into the screw hole of the outer peripheral portion of the bearing 320 from the Z1 direction side, and for example, the end portion of the screw 340 on the Z2 direction side is brought into slight contact with the screw hole of the outer peripheral portion of the cylinder block 330, thereby completing the preassembly of the bearing 320 and the cylinder block 330.

Next, as shown in fig. 8, the bearing 320 and the cylinder block 330 are provided in advance on the support portion 223 of the centering portion 220 of the assembly unit 200 so that the cylinder block 330 is held by the support portion 223 of the centering portion 220 (in the illustrated example, the cylinder block 330 is supported from the Z2 direction side by a step surface perpendicular to the Z direction in the stepped hole of the support portion 223, and the cylinder block 330 is supported from the outer peripheral side by the inner peripheral surface of the stepped hole of the support portion 223).

Then, by operating a button or the like provided in an operation unit (not shown) of the frame unit 120, the control unit 250 drives the plurality of claws 2243 to come together by the first and second driving units 225 and 226, and brings the plurality of claws 2243 into contact with the outer peripheral surface of the bearing 320 from the outer peripheral side, and in this state, supplies gas to the gas passage 2273 of the position measurement unit 227, and ejects the gas from the first and second nozzle holes 2271 and 2272, thereby measuring the distance between the inner wall of the bearing 320 and the inner wall of the cylinder 330 facing the inner wall by gas-electric conversion, and transmits the measurement result to the control unit 250.

Then, the control unit 250 drives the stage unit 224 to move in the X direction and the Y direction by the first correction unit 221 and the second correction unit 222 while displaying the relevant information on the display unit 261 based on the measurement result of the position measurement unit 227 so as to finely adjust the position of the bearing 320 with respect to the cylinder 330 in the X direction and the Y direction so that the distance between the inner wall of the bearing 320 and the inner wall of the cylinder 330 facing the inner wall is within a predetermined range.

Then, controller 250 moves assembly unit 230 to the Z2 direction side by lifter 240 until the working portion provided at the Z2 direction side end of assembly unit 230 comes into contact with the Z1 direction side end of screw 340, and then controller 250 rotates the working portion of assembly unit 230 in a predetermined direction to screw 340 into the screw hole of the outer peripheral portion of cylinder 330, thereby firmly fixing bearing 320 to cylinder 330, and thereafter, controller 250 moves assembly unit 120 to a predetermined position in the Z1 direction by lifter 130 and stops.

Finally, the assembled bearing 320 and cylinder block 330 are removed from the centering portion 220.

(main effect of the present embodiment)

According to the compressor assembly assembling apparatus of the present embodiment, the measuring unit 100 for an eccentric shaft includes: a support portion for supporting eccentric shaft 310 to be rotatable about the rotation center line of shaft body 311; a driving unit 112 for rotating the eccentric shaft 310 supported by the supporting unit about the rotation center line of the shaft body 311; a measuring section 113 having a first contact and a second contact which are provided so as to be spaced 180 degrees apart in a circumferential direction around a rotation center line of a shaft main body 311 of an eccentric shaft 310 supported by a support section, the first contact abutting against an outer peripheral surface of an eccentric section 312 of the eccentric shaft 310, the second contact abutting against an outer peripheral surface of the shaft main body 311 of the eccentric shaft 310, and the first contact and the second contact being provided so as to be movable in a predetermined direction perpendicular to the rotation center line of the shaft main body 311 of the eccentric shaft 310 in accordance with the rotation of the eccentric shaft 310 supported by the support section and to output position information or related information corresponding to the position information, and a converting section which acquires a distance between the position of the eccentric section and the position of the shaft main body based on a correspondence between the position information or the related information output from the first contact and the second contact and a radial dimension of the section on the outer peripheral surface of the eccentric shaft 310, wherein, the eccentric portion means a portion on the outer circumferential surface of the eccentric portion 312 of the eccentric shaft 310, and the shaft body portion means a portion on the outer circumferential surface of the shaft body 311 of the eccentric shaft 310, which is 180 degrees apart from the eccentric portion in the circumferential direction around the rotation center line of the shaft body 311; and a control unit for controlling the operation of the compressor assembly equipment; therefore, by simply supporting eccentric shaft 310 at the supporting portion of eccentric shaft measuring unit 100, bringing the first contact of measuring portion 113 into contact with the outer peripheral surface of eccentric portion 312 of eccentric shaft 310, bringing the second contact of measuring portion 113 into contact with the outer peripheral surface of shaft main body 311 of eccentric shaft 310, and then driving eccentric shaft 310 to rotate (for example, one rotation) by driving portion 112, the distance between the portion of eccentric portion 312 of eccentric shaft 310 having the largest radial dimension and the portion of shaft main body 311 spaced 180 degrees apart from the portion in the circumferential direction around the rotation center line thereof can be easily obtained by measuring portion 113, thereby improving the manufacturing efficiency of the compressor.

Further, according to the compressor assembly assembling apparatus of the present embodiment, the eccentric shaft measuring unit 100 includes the rod portion 11116 as the support, the plurality of pulleys 11118, 11119 are provided on the rod portion 11116, the belt 1122 is bridged on the plurality of pulleys 11118, 11119, the rod portion 11116 is provided rotatably so as to switch the belt 1122 between the first position where the belt 1122 is close to the first support portion 11111, the second support portion 11112, and the third support portion 11113 and abuts against the eccentric shaft 310 from both sides in the radial direction of the eccentric shaft 310 supported by the first support portion 11111, the second support portion 11112, and the third support portion 11113 together with the first support portion 11111, the second support portion 11112, and the third support portion 11113, and the second position where the belt 1122 is away from the first support portion 11111, the second support portion 11112, and the third support portion 11113 so as to be separated from the eccentric shaft 310 supported by the first support portion 11111, the second support portion 11112, and the third support portion 11113, since driving unit 112 includes motor 1121, and motor 1121 drives at least one of pulleys 11118 and 11119 to rotate, transmission belt 1122 can simultaneously serve to press and fix eccentric shaft 310 and to drive eccentric shaft 310 to rotate with a simple configuration, which contributes to simplification of the overall configuration of the apparatus and reduction of manufacturing cost.

Further, the compressor assembly assembling apparatus according to the present embodiment includes an assembling unit 200, the assembling unit 200 including: a centering unit 220 having a support table 223 for supporting the bearing 320 and the cylinder block 330 constituting a part of the compressor unit 300 such that the bearing 320 and the cylinder block 330 are stacked in the Z direction and the axis of the inner bore of the bearing 320 and the axis of the inner bore of the cylinder block 330 extend in the Z direction, and a correcting unit for relatively moving the bearing 320 and the cylinder block 330 supported by the support table 223 in a plane perpendicular to the Z direction to perform a centering operation; and an assembly part 230 for fixing the bearing 320 and the cylinder block 330 after the centering operation by a connecting member such as a screw 340 so as not to move relatively; therefore, the centering work and the fixing work of the bearing 320 and the cylinder block 330 can be conveniently performed using the assembly unit 200, thereby improving the manufacturing efficiency of the compressor.

The present invention is described above by way of example with reference to the accompanying drawings, and it is to be understood that the specific implementations of the present invention are not limited to the above-described embodiments.

For example, in the above-described embodiment, the belt 1122 constitutes a part of the driving portion and constitutes the pressing portion, but the present invention is not limited thereto, and the driving portion and the pressing portion may be provided separately.

In the above embodiment, the claws 2243 are formed to be tapered toward the bearing 320 and the cylinder 330 supported by the support base 223 in the assembly unit 200, but the shape is not limited to this, and the claws 2243 may be formed in other shapes, for example, in a substantially Y-shape when viewed in the Z direction, and may be formed to abut against the outer peripheral surface of the bearing 320 or the cylinder 330 by double-forked portions of the Y-shape.

In the above embodiment, as shown in fig. 9, the assembly unit 200 may further include a tray 280 and an elevating unit 290, the tray 280 including a bottom plate 281 on which the bearing 320 and the cylinder 330 constituting a part of the compressor unit 300 are placed, the bottom plate 281 being provided with a through hole 2811 penetrating in the Z direction, the elevating unit 290 elevating the tray 280 on which the compressor unit 300 is placed such that the bearing 320 and the cylinder 330 are stacked in the Z direction between a lowered position (a position shown in fig. 8) in which the columnar body 2231 is provided at a central portion of the support table 223 so as to pass through the through hole 2811 of the tray 280 and lift the bearing 320 and the cylinder 330 from the tray 280 and a raised position in which the columnar body 2231 provided at the central portion of the support table 223 is withdrawn from the through hole 2811 of the tray 280 and separated from the bearing 320 and the cylinder 330. As shown in fig. 8, the support base 223 further includes a plurality of clamping portions 2232, and the clamping portions 2232 can be moved together or apart in a plane perpendicular to the Z direction, and in the moved-together state, the clamping portions 2232 can abut against the outer peripheral side of the cylinder block 330 of the compressor unit 300 to position and fix the cylinder block 330 in the X direction and the Y direction. With this structure, the compressor assembly 300 can be easily carried between the assembly unit 200 and other units using the tray 280, contributing to an improvement in the manufacturing efficiency of the compressor.

It should be understood that the present invention can freely combine the components in the embodiments, or appropriately change or omit the components in the embodiments within the scope thereof.

Claims (8)

1. A compressor assembly assembling apparatus, in which a compressor assembly has an eccentric shaft having a shaft main body and an eccentric portion eccentric with respect to a rotation center line of the shaft main body,

comprises a measuring unit for an eccentric shaft, a measuring unit for a measuring unit,

the measuring unit for the eccentric shaft includes:

a support portion for supporting the eccentric shaft to be rotatable about a rotation center line of the shaft main body;

a drive unit for rotating the eccentric shaft supported by the support unit about a rotation center line of the shaft body;

a measuring section having a first contact, a second contact, and a converting section, the first contact and the second contact being provided at a distance of 180 degrees in a circumferential direction around a rotation center line of a shaft body of an eccentric shaft supported by the support section, the first contact abutting against an outer circumferential surface of an eccentric section of the eccentric shaft, the second contact abutting against an outer circumferential surface of the shaft body of the eccentric shaft, and the first contact and the second contact being provided so as to be movable in a predetermined direction perpendicular to the rotation center line of the shaft body of the eccentric shaft in accordance with rotation of the eccentric shaft supported by the support section and outputting position information or related information corresponding to the position information, the converting section acquiring a distance between a position of the eccentric section and a position of the shaft body section based on a correspondence relationship between the position information or the related information output by the first contact and the second contact and a radial dimension of the section on the outer circumferential surface of the eccentric shaft, wherein the eccentric portion means a portion on an outer peripheral surface of an eccentric portion of the eccentric shaft, and the shaft body portion means a portion on an outer peripheral surface of a shaft body of the eccentric shaft 180 degrees apart from the eccentric portion in a circumferential direction around a rotation center line of the shaft body; and

a control unit for controlling the operation of the compressor assembly assembling apparatus,

comprising a drive belt forming part of said drive,

the transmission belt is provided so as to be capable of abutting against the eccentric shaft from both sides in the radial direction of the eccentric shaft supported by the support portion together with the support portion, and is rotated in a state of abutting against the eccentric shaft to drive the eccentric shaft to rotate.

2. The compressor assembly assembling apparatus of claim 1,

the drive belt is arranged to be switchable between a first position and a second position,

in the first position, the transmission belt is close to the support portion and abuts with the support portion from both sides in a radial direction of the eccentric shaft supported by the support portion,

in the second position, the belt is distanced from the bearing portion so as to be separated from the eccentric shaft bearing on the bearing portion.

3. The compressor assembly assembling apparatus of claim 1,

comprises an assembling unit which is composed of a plurality of assembling units,

the assembly unit includes:

a centering portion having a support table for supporting a bearing and a cylinder block constituting a part of the compressor unit so that the bearing and the cylinder block are stacked in an up-down direction and an axis of an inner hole of the bearing and an axis of an inner hole of the cylinder block extend in an up-down direction, and a correcting portion for relatively moving the bearing and the cylinder block supported by the support table in a horizontal plane to perform a centering operation; and

and an assembling portion which fixes the bearing and the cylinder block after the centering operation to be immovable relative to each other by a connecting member.

4. The compressor assembly assembling apparatus of claim 3,

the assembly unit includes:

a tray having a bottom plate portion on which a bearing and a cylinder block constituting a part of the compressor unit are placed, the bottom plate portion being provided with a through hole penetrating in a vertical direction; and

and an elevating unit that elevates the tray, on which the bearing and the cylinder are placed so that the bearing and the cylinder are stacked in a vertical direction, between a lowered position at which a part of the support table passes through the through hole of the tray to lift the bearing and the cylinder from the tray and a raised position at which a part of the support table retreats from the through hole of the tray to be separated from the bearing and the cylinder.

5. The compressor assembly assembling apparatus of claim 3,

the centering portion includes a position measuring portion,

the position measuring section measures a distance between an inner wall of the bearing and an inner wall of the cylinder body opposed to the inner wall,

the correcting part relatively moves the bearing supported on the supporting table and the cylinder body in a horizontal plane according to the measurement result of the position measuring part, so that the distance is within a preset range.

6. The compressor assembly assembling apparatus of claim 5,

the position measuring part comprises a pneumatic measuring head,

the pneumatic measuring head has a shaft-like portion for insertion into the inner bore of the bearing and the inner bore of the cylinder,

the shaft-shaped part is provided with an air passage and a first spray hole and a second spray hole which are communicated with the air passage,

the first nozzle hole and the second nozzle hole are arranged in the vertical direction so as to correspond to the inner hole of the bearing and the inner hole of the cylinder, respectively, and are opened at positions on the outer peripheral surface of the shaft-shaped portion that are separated by 180 degrees in the circumferential direction.

7. The compressor assembly assembling apparatus of claim 3,

the centering portion includes a three-jaw mechanism,

the three-jaw mechanism includes three jaws that drive one of a bearing and a cylinder by coming into contact with one of the bearing and the cylinder supported by the support table,

the claw is formed in a shape that is tapered as it approaches the bearing and the cylinder block supported by the support base, or in a Y-shape.

8. A method of manufacturing a compressor, wherein the compressor includes an eccentric shaft having a shaft main body and an eccentric portion eccentric with respect to a rotation center line of the shaft main body,

comprises a measuring step of measuring the rotation of the eccentric shaft by a measuring unit while the eccentric shaft is rotatably supported by a support unit around the rotation center line of the shaft body and is driven by a driving unit,

the measuring section has a first contact and a second contact which are provided so as to be spaced 180 degrees apart in a circumferential direction around a rotation center line of a shaft body of the eccentric shaft supported by the support section, the first contact abutting against an outer peripheral surface of an eccentric section of the eccentric shaft, the second contact abutting against an outer peripheral surface of the shaft body of the eccentric shaft, and the first contact and the second contact being provided so as to be movable in a predetermined direction perpendicular to the rotation center line of the shaft body of the eccentric shaft in accordance with rotation of the eccentric shaft supported by the support section and outputting position information or related information corresponding to the position information, and a converting section which acquires a distance between the position of the eccentric section and the position of the shaft body section on the basis of a correspondence relationship between the position information or related information output from the first contact and the second contact and a radial dimension of the section on the outer peripheral surface of the eccentric shaft, wherein the eccentric portion is a portion on an outer peripheral surface of an eccentric portion of the eccentric shaft, the shaft body portion is a portion on an outer peripheral surface of a shaft body of the eccentric shaft which is 180 degrees apart from the eccentric portion in a circumferential direction around a rotation center line of the shaft body,

a part of the driving part is constituted by a belt,

the transmission belt is provided so as to be capable of abutting against the eccentric shaft from both sides in the radial direction of the eccentric shaft supported by the support portion together with the support portion, and is rotated in a state of abutting against the eccentric shaft to drive the eccentric shaft to rotate.

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