KR200143476Y1 - Rotor assembling machine - Google Patents

Abstract

The present invention relates to a hot pressing device of a rotor for a compressor, and a conveyor cylinder for a conveyor and a jig holder in the X-axis direction, respectively, to transfer the crank shaft inserted into the rotor and the upper bearing on the base plate bottom of the support stand. Rotor which is installed in the base plate, and the inner diameter is extended to the inner diameter expansion means by the elevating means and the chucking means and the conveying means, respectively, the pressing means installed to automatically chuck the crankshaft to the rotor while being transported in the Y and Z axis direction. By press-fitting the crankshaft assembled with the upper bearing to maintain a certain distance from the rotor and cooling by forced air cooling, the amount of eccentricity generated during press-fitting of the crankshaft is eliminated, so that the verticality can be accurately matched, and the rotor and the crankshaft and Constant gap between upper bearings The female rotor vibration and noise generated during rotation is prevented thereby improving the reliability of the product.

Description

Hot Pressing Device of Compressor Rotor

The present invention relates to a hot press device for press-fitting an upper bearing of a compressor rotor and a crankshaft inserted therein, and more particularly, between the upper bearing and the crankshaft while automatically pressing the crankshaft into the rotor. The invention relates to a hot indentation apparatus for a rotor that can accurately maintain a gap of the rotor.

In general, the compressor is a part of the components constituting the refrigerating cycle, it is usually for compressing the low-temperature, low-pressure of the gaseous refrigerant from the evaporator to transfer the high-temperature, high-pressure refrigerant in the gas phase to the condenser side Such a compressor is composed of a stator core fixed inside the housing and a rotor rotated by a magnetic field generated in the stator core. The rotor is composed of an upper bearing which is press-fitted to the rotor and its hollow part and a crank shaft into which the upper bearing is inserted.

In the conventional pressing method for press-fitting the upper bearing and the crankshaft inserted into the rotor, the rotor is placed on a jig means such as a pallet, and then the crankshaft inserted into the upper bearing is inserted into the hollow of the rotor. The crankshaft was press-fitted with a hammer in the state which made it pressurize, or the crankshaft was cold-pressed in the rotor using the press apparatus, such as a press.

However, in the case of press-fitting the crankshaft including the upper bearing by means of cold pressing using manual or pressurizing device as described above, the verticality cannot be accurately matched, and the crankshaft is biased in one direction. There was a problem in that the reliability of the compressor is lowered due to vibration and noise generated during rotation.

In addition, the upper bearing and the crankshaft inserted therein are in contact with each other, that is, the step of the crankshaft is pressed into the rotor in direct contact with the upper surface of the upper bearing, so that the upper bearing for smoothly rotating the rotor and the crankshaft. There is a disadvantage that the gap between the crankshaft and the crankshaft cannot be maintained accurately.

The present invention is to solve the above problems, an object of the present invention is to expand the inner diameter by heating the compressor rotor at high frequency and then insert the upper bearing into which the crankshaft is inserted into the rotor having the extended inner diameter Air-cooled hot press-fit method automatically performs the process for press-fitting the crankshaft, eliminating the amount of eccentricity generated during press-fitting of the crankshaft inserted into the upper bearing, so that the verticality can be precisely adjusted, especially vibration generated during rotor rotation. And to provide a hot pressing device that can prevent the noise to improve the reliability of the product.

Another object of the present invention is to accurately maintain the gap between the stepped portions of the upper bearing and the crankshaft as well as to smoothly rotate the rotor and the crankshaft. In particular, the gap of the crankshaft used in various types of compressors is the same process. It is to provide a hot press-fit device of the compressor rotor that can be adjusted in.

1 is a perspective view showing a hot pressing device of the compressor rotor according to the present invention,

FIG. 2 is an enlarged view of a main portion of the hot pressing device shown in FIG. 1, and is a perspective view of chucking means for chucking a crank shaft assembled with an upper bearing;

3 is a view showing the operating state of the hot pressing device according to the present invention, a side view of the chucking means is transferred in the Z-axis direction chucking the crankshaft including the upper bearing,

4 is an enlarged cross-sectional view of FIG. 3A;

5 is a front view illustrating a state in which the crankshaft is press-fitted into the rotor by the hot pressing device of the present invention.

Explanation of symbols on the main parts of the drawings

2: crankshaft 2a: eccentric shaft

4: upper bearing 4a: stepped portion

6: rotor 10: base plate

12: support 14: support frame

16: guide rail 20: lifting means

22, 26, 44: 1st, 2, 3 bracket 24, 36: 1st, 2nd air cylinder

26a: rectangular hole 30: transfer means

32: fixed piece 34: floating joint

38: shock absorber 40: fastening member

42: fixed bar 46: compression spring

50: chucking means 52: air chuck

54: chucking holder 56: gripper

58, 62: 3rd, 4th air cylinder 60: direction adjusting piece

60a: horizontal slot 64: clearance adjustment pin

70 pressurizing means 72 a fifth air cylinder

74: guide plate 74a: ball bush

76: guide bar 78: auxiliary bracket

80: pressure member 90: pallet

92 plate 92a jig hole

94: seating portion 96: conveyor

100: jig holder 102: pinion

102a: seating hole 104: drive motor

106: adjusting gear 108: air cylinder

110: transfer cylinder for jig holder 112: release cylinder

The present invention for achieving the above objects is coupled to the base plate and a plurality of support frames are installed in the same direction and the support plate is installed in the same direction and the support plate is installed up and down between the base plate and the support frame Lifting means for moving the crankshaft including the upper bearing in the Y-axis direction, a conveying means connected to the lifting means by a floating joint to transfer the lifting means in the Z-axis direction, and the lifting means bottom Chucking means for simultaneously chucking the upper bearing and the crankshaft inserted therein, and pressing means mounted to the elevating means to press the eccentric shaft of the crankshaft; A conveyor is installed on the base plate in the X-axis direction, and a pallet is mounted on the conveyor to load and transport the rotor to a lower position of the chucking means, and a transfer cylinder for a jig holder is installed in the same direction as the conveyor in front of the conveyor. It is achieved by including a jig holder mounted on the transfer cylinder for the jig holder to mount the upper bearing and the crankshaft to reciprocate to the bottom of the chucking means.

According to a preferred embodiment of the present invention, the elevating means includes: a first bracket reciprocating forward and backward along the guide rail and a fixing piece protruding from the rear side thereof, and installed on both sides of the first bracket, according to the supply of air. The first air cylinder is operated and the second bracket is formed with a rectangular hole coupled to one end of the piston rod thereof.

The conveying means according to the preferred embodiment of the present invention is a floating joint fastened to the fixed piece of the elevating means and the second end of the piston rod is connected to the second air for lifting and chucking means including the lifting means and the chucking means together Achieved by the configuration of a cylinder.

The chucking means according to the preferred embodiment of the present invention is an air chuck mounted to the third bracket and the bottom of the third bracket fixed to one end of the fastening member, and is mounted on one side and both sides of the air chuck respectively to form the upper end and the outer peripheral surface of the upper bearing. The chucking holder and the gripper to reciprocate to cross each other so as to hold at the same time, and the third air cylinder fixed to the direction adjusting piece provided on the lower part of the air chuck and the fourth air cylinder fixed to the clearance adjusting pin is achieved.

The pressurizing means according to the preferred embodiment of the present invention is a ball bush which is fixed to the fifth air cylinder and the fifth air cylinder fixed to the first bracket and the fifth air cylinder and protrudes to the guide plate, the guide bar is It is achieved by consisting of an auxiliary bracket which is inserted and fixed to one end of the guide bar, and a pressing member which is fixed to the piston rod of the fifth air cylinder by a nut and pressurizes the eccentric shaft of the crankshaft.

The rotor loaded on the pallet according to the preferred embodiment of the present invention is achieved by extending the inner diameter of the rotor through the inner diameter expanding means.

Hereinafter, a preferred embodiment of the hot pressing device of the compressor rotor according to the present invention will be described in detail with reference to FIG.

Hot-pressing apparatus of the present invention is a base plate 10 and a plurality of support stand 12 is installed upright on its upper surface, a pair of support frame coupled by a coupling bolt or the like to be located in the same direction from the top of the support (12) 14) lifting and lowering means 20 for moving up and down between the base plate 10 and the support frame 14 to move the crankshaft 4 including the upper bearing 2 in the Y-axis direction, Crankshaft (2) mounted on the bottom of the transfer means 30 and the elevating means 20 is connected to the elevating means 20 by a floating joint to transfer the elevating means 20 in the Z-axis direction. And pressurizing means (70) installed on the chucking means (50) and the lifting means (20) for chucking the upper bearing (4) at the same time to press the eccentric shaft (2a) of the crankshaft (2).

Here, the conveyor 96 is installed in the X-axis direction so that the pallet 90 on which the rotor 6 is seated can be transferred to the lower position of the chucking means 50 on the base plate 10. ) In the front, a jig holder transfer cylinder 110 is installed in the same direction to reciprocate the jig holder 100 on which the upper bearing 2 and the crankshaft 4 are seated at the same time to the lower part of the chucking means 50. On the bottom of the support frame 14, the guide rail 16 is integrally mounted.

The elevating means 20 is installed on the first bracket 22 reciprocating forward and backward along the guide rails 16 and the bottoms of both sides thereof, and is operated upward and downward in accordance with the supply of air. The first air cylinder 24 and the second bracket 26 is formed with a rectangular hole 26a coupled to one end of the piston rod of the first air cylinder 24.

The conveying means 30 has a fixed piece 32 protruding from the rear side of the first bracket 22 and one end thereof is connected to the floating joint 34 fastened to the fixed piece 32 so that the elevating means 20 and the chucking can be carried out. It consists of a second air cylinder 36 which conveys the means 50 together. The lower part of the second air cylinder 36 has a shock absorber (1) for minimizing the shock generated when the first bracket 22 collides with the support 12 by inertial force during the transfer of the lifting means 20. a shock absorber 38 is mounted.

Under the conveying means 30, the chucking means 50 for chucking the upper bearing 4 and the crankshaft 2 inserted therein is fastened by the fastening member 40, and the fastening member 40 is Compensation for the height of the crankshaft 2 that is applied in various forms by interposing the third bracket 44 fixed to the lower portion of the second bracket 26 by the fixing bar 42 and the fixing bar 42. Compression spring 46 is composed of.

As shown in FIG. 2, the chucking means 50 is mounted on one side and both sides of the air chuck 52 and the air chuck 52 mounted to the bottom of the third bracket 44. Third and fourth air cylinders 58 installed under the chucking holder 54 and the gripper 56 and the air chuck 52 which reciprocate to cross each other so as to simultaneously hold the upper end and the outer circumferential surface. And a horizontal long hole (60a), one side of which is open to the piston rod of the third air cylinder (58) so as to insert an eccentric shaft (2a) of the crankshaft (2a) and adjust its direction. The direction adjusting piece 60 is fixed, and the piston rod of the fourth air cylinder 62 has a gap adjusting pin for adjusting a gap gap between the stepped portion 4a of the upper bearing 4 and the crank shaft 2 ( 64) is fixed.

Here, one end portion of the chucking holder 54 and the gripper 56 are the same as the upper end portion and the outer circumferential surface of the upper bearing 4 so as to increase the contact area of the upper bearing 4 to prevent slippage during chucking. It is preferable that arc-shaped grooves are formed, respectively.

The pressurizing means 70 includes a fifth air cylinder 72 fixed to the first bracket 22 and a guide plate 74 and a ball bush 74a protruding from each other in a ball bush 74a. The guide bar 76 and the guide bar 76 fitted to each of the guide brackets 76 fixed to one end, and the bottom of the auxiliary bracket 78 and the piston rod of the fifth air cylinder 72 are fixed with a nut It consists of an annular bar-shaped pressing member 80 for pressing the eccentric shaft 2a of the crankshaft 2 during the operation of the air cylinder 72.

Meanwhile, the pallet 90 on which the compressor rotor 6 is seated includes a plate 92 having a jig hole 92a formed in a diagonal direction and a seating portion 94 mounted vertically to an upper surface thereof. 2) The pinion 102 having the seating hole 102a formed thereon so as to insert the upper bearing 4 on the upper surface of the jig holder 100 for seating, and the pinion 102 are geared to the eccentric shaft 2a direction. Adjusting gears 106 rotated by the driving motor 104 are attached to each other, and the jig holder 100 is located in the chucking holder 54 of the chucking means 50 inside the jig holder 100. The air cylinder 108 which raises the crankshaft 2 slightly upwards is inherent.

If described in detail with reference to Figures 3 to 5 the action of the hot press injection device according to the present invention configured as described above.

Fig. 3 shows the operation of the hot press device for chucking the upper bearing loaded on the jig holder and the crankshaft inserted therein, with the pallet 90 and upper bearing seating the compressor rotor 6 on the seat. The crankshaft 2 inserted in (4) is moved to the lower position of the chucking means 50 along the conveyor 96 and the jig holder transfer cylinder 110 installed in the same direction on the bottom surface of the base plate 10. .

That is, the rotor 6 is seated on the seating portion 94 of the pallet 90 using a conveyor device (not shown), and the upper bearing 4 is seated in the seating hole 102a of the jig holder 100. The rotor 6 and the crankshaft 2 are simultaneously transferred in the X-axis direction. At this time, when the rotor 6 is conveyed along the conveyor 96, the rotor 6 passes through the inner diameter expansion means (not shown) to expand the inner diameter of the rotor 6, and the eccentric shaft 2a of the crank shaft 2 is a jig. As the adjusting gear 106 is rotated by the drive motor 104 which receives the signal of the direction detection sensor (not shown) attached to the holder 100, the pinion 102 geared to the gear is interlocked. Adjust in the direction of the axis 2a.

The inner diameter expansion means may be a high frequency heating device inserted into the outer circumference of the rotor 6 or a ceramic heater rod inserted into the inner diameter of the rotor 6 to generate high temperature heat.

Thereafter, when the air is supplied to the second air cylinder 36, the piston rod moves linearly, and the chucking means 50 and the pressurizing means 70 installed in the first bracket 22 and its downward direction are moved to the jig holder 100. Simultaneously feed in the Z-axis until it is located on top of. In the transferred position, the first air cylinder 24 of the elevating means 20 is operated until the upper end portion of the crankshaft 2 is inserted into the chucking holder 54. 26) in the Y-axis direction. At this time, the direction adjusting piece 60 and the gap adjusting pin 64 fixed to the chucking holder 54, the gripper 56, and the third and fourth air cylinders 58 and 62 of the chucking means 50 are bidirectional. To keep it open.

When the chucking means 50 is operated in the state where the lifting means 20 is positioned as described above, the air cylinder 108 embedded in the jig holder 100 is operated to slightly lift the crank shaft 2 upwards, At the same time, as shown in FIG. 4, the chucking holder 54 and the gripper 56, which are mounted to cross the air chuck 52 of the chucking means 50, are sequentially moved inward and sequentially, The stepped portion 4a and the outer periphery are sequentially chucked to prevent flow.

Then, while the direction adjusting piece 60 fixed to the third air cylinder 58 is moved, the eccentric shaft 2a of the crankshaft 2 is inserted into the horizontal long hole 60a so as to secondary the eccentric shaft 2a. Direction is adjusted, and the fourth air cylinder 62 is operated immediately, and the clearance adjusting pin 64 fixed thereto is inserted between the step portion 4a of the upper bearing 4 and the crankshaft 2 so as to be 0.2 to 0.56. Maintain a gap of about mm.

Thereafter, the elevating means 20 is raised and the second air cylinder 36 is operated to transfer the elevating means 20 to the position of the pallet 90 on which the rotor 6 is seated in the reverse direction. The pressing means 70 is operated as shown in FIG. 5 with the crankshaft 2 including the upper bearing 4 lowered until it is inserted into the extended inner diameter of the rotor 6. At this time, since the first bracket 22 mounted below the second air cylinder 36 hits the shock absorber 38 by the action of inertial force, the shock is minimized during the Z-axis transfer of the elevating means 20. You can.

In other words, the fifth air cylinder 72 of the pressing means 70 is operated so that the auxiliary bracket 78 is lowered along the guide bar 76 fitted to the ball bush 74a and mounted on the bottom of the auxiliary bracket 78 at the same time. The pressing member 80 presses the eccentric shaft 2a while passing through the rectangular hole 26a of the second bracket 26 to press-fit the upper bearing 4 and the crankshaft 2 to the rotor 6. will be.

As described above, when the hot pressing process is completed, the chucking means is operated in the reverse order. That is, the gripper 56 and the chucking holder 54 of the fourth and third air cylinders 62 and 58 which chuck the upper bearing 4 and the crankshaft 2 are sequentially operated to release the chucking. At the same time, the ascending and descending means 20 automatically performs a series of press-fitting processes, and the rotor 6 in which the hot-pressing process is completed is circulated along the conveyor 96 to be cooled by forced air cooling.

According to the hot pressing device of the compressor rotor according to the present invention as described above, the lifting means including a crank shaft inserted in the upper bearing moved along the feed cylinder for the jig holder in the Y and Z-axis direction By press-fitting the rotor conveyed along the conveyor to the chucking means and the conveying means, the amount of eccentricity generated when the crankshaft is press-fitted can be eliminated and the verticality can be accurately matched, and the vibration and noise generated when the rotor is rotated are prevented. In addition to precisely maintaining the gap between the upper bearing and the crankshaft step, the rotor and crankshaft can be rotated smoothly, and the gap between the crankshaft used in various types of compressors is the same process. You can adjust from

Claims (9)

An apparatus for press-fitting an upper bearing and a crank shaft inserted thereto into a compressor rotor, A base plate on which a plurality of supports are installed upright; A pair of lifting frames coupled to the upper portion of the support so as to be positioned in the same direction and installed between the base plate and the supporting frame so as to move up and down to move the crank shaft including the upper bearing in the Y-axis direction; ; Transfer means connected to the lifting means by a floating joint to transfer the lifting means in the Z-axis direction; Chucking means mounted on the lifting means bottom and chucking the upper bearing and the crankshaft inserted therein; It is mounted to the lifting means consisting of a pressing means for pressing the eccentric shaft of the crankshaft; A pallet is installed on the base plate in the X-axis direction and is mounted on the conveyor to load and transport the rotor to a lower position of the chucking means; In the front of the conveyor jig holder transfer cylinder is installed in the same direction as the conveyor and is mounted to the transfer cylinder for jig holder comprises a jig holder for reciprocating to the lower chucking means by loading the upper bearing and the crank shaft Hot press-fit device of the compressor rotor. According to claim 1, The elevating means is a first bracket reciprocating forward and backward along the guide rail and the fixing piece protruding on the rear side thereof, and installed on both sides of the first bracket to supply air Hot press-fitting apparatus of the compressor rotor, characterized in that the first air cylinder is operated according to, and the second bracket formed with a rectangular hole coupled to one end of the piston rod of the first air cylinder. The hot press-fitting apparatus of the compressor rotor according to claim 1, wherein a fastening member for fastening the upper bearing and the chucking means for chucking the crank shaft inserted therein is fixed to the lower portion of the conveying means. The method of claim 3, wherein the fastening member comprises a third bracket fixed to the bottom of the second bracket with a fixing bar, and a compression spring for compensating the height of the crankshaft interposed outside the fixing bar to be applied in various forms. Hot-pressing apparatus for compressor rotor. According to claim 1, wherein the chucking means is a third bracket fixed to one end of the fastening member, the air chuck to be mounted to the bottom of the third bracket, the air chuck is mounted on one side and both sides of the upper end of the upper bearing, respectively And a chucking holder and a gripper which reciprocate to cross each other so as to simultaneously hold the outer circumferential surface, and third and fourth air cylinders installed below the air chuck, and fixed to the piston rod of the third air cylinder to form a crank shaft. Compressor for adjusting the direction of the eccentric shaft of the compressor and the gap adjustment pin for fixing the gap between the stepped portion of the upper bearing and the crank shaft fixed to the piston rod of the fourth air cylinder Hot-pressing device of the rotor. The compressor of claim 8, wherein the chucking holder has one end portion and a gripper formed with the same arc groove as the upper end portion and the outer circumferential surface of the upper bearing so as to increase the contact area with the upper bearing during chucking to prevent slippage. Hot-pressing device for rotor. The method of claim 1, wherein the pressing means is a fifth air cylinder fixed to the first bracket, a ball bush which is fixed to the guide plate is fixed to the lower portion of the fifth air cylinder and protrudes to the guide plate, Compressor rotor, characterized in that the guide bar is inserted and fixed to one end of the guide bar, the auxiliary bracket is fixed to the piston rod of the bottom and the fifth air cylinder by pressing member for pressing the eccentric shaft of the crankshaft. Hot press equipment. According to claim 1, The jig holder upper surface is equipped with a pinion is formed with a seating hole for inserting the upper bearing, the pinion is geared to rotate the adjustment gear rotated by the drive motor to adjust the direction of the eccentric shaft And an inside of the jig holder, the air cylinder for slightly lifting the crank shaft upward when the jig holder is positioned below the chucking means. The hot pressing apparatus of the compressor rotor according to claim 1 or 8, wherein the jig holder is provided with a direction detecting sensor for detecting an eccentric shaft direction of the crankshaft and outputting a signal thereof to the adjusting gear.