JP3028784B2 - Method of manufacturing socket plate for compressor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a socket plate for a compressor. More specifically, the present invention relates to a method for manufacturing a socket plate by extrusion, in which an insert ring cut by machining is inserted into a plate formed by extrusion. The present invention relates to a method for manufacturing a socket plate of a compressor formed by cold forging.

[0002]

2. Description of the Related Art In general, a Car air conditioner includes a compressor, a condenser, an expansion valve, and an evaporator, like an air conditioner. The compressor serves to compress the refrigerant gas and send it to the compressor during the cooling cycle. By such an operation, the refrigerant circulates through the cycle, and the compressor sends the heat in the vehicle absorbed by the evaporator to the condenser, and releases the heat to the air passing through the condenser.

FIG. 3 shows a compressor for a car air conditioner generally equipped with a socket plate.
The important parts constituting the cylinder 0 are a cylinder 101, a piston 102, a connecting rod 103, a socket plate 104, and a rotating shaft 105.

The socket plate 104 has a rotating shaft 10
5 is installed with a certain inclination angle, the connecting rod 103 is installed at the installation site of the socket plate 104 so as to be able to move in the front-rear, left-right and circumferential directions,
The piston 102 is connected to the connecting rod 103
And the piston is inserted into the cylinder 101.

Accordingly, the rotation of the rotating shaft 105 causes the socket plate 104 to rotate, and the connecting rod 103 installed on the socket plate 104 is moved upward and downward by the installation inclination angle of the socket plate 104 to move the piston 102 downward. The cylinder 101
Reciprocate within. Therefore, the piston 102 compresses the refrigerant gas by the socket plate 104 to increase the pressure, and at the same time, inhales the refrigerant gas to circulate the refrigerant in the cycle.

The body on which the connecting rod 103 is installed is mounted on the socket plate 104,
A rotating shaft 105 is mounted inside the socket plate 104, and the socket plate 10 is used for smooth rotation.
The insert ring is installed in the hole 4.

In general, a socket plate is manufactured by casting a molten aluminum alloy as a material of the socket plate, forming a base material, subjecting the base material to an annealing heat treatment and a heating process, and then compressing the base material. Is formed, and the shape of the base material is corrected in a straightening operation and cut into a predetermined size so that the base material can be easily adapted to a forging operation. The base material is put into a forging die, press-worked, forged into a socket plate shape, and machined to form a socket plate.

Then, an insert ring forcibly assembled into the hole of the socket plate is completed by machining, and at the same time, a no ring (K) is formed on the outer peripheral edge so that the insert ring does not come off from the hole of the socket plate.
Nulling) to complete the insert ring.

After that, an insert ring which is not ringed on the outer peripheral edge is forcibly incorporated into the hole of the socket plate to complete the socket plate. However, the above-described manufacturing process has an effect of manufacturing a high-strength socket plate, but requires many processes, so that a long manufacturing time is required, equipment required for manufacturing is expensive, and energy consumption is low. There was a problem that not only the production cost was high but also the work efficiency was reduced.

Further, since the socket plate and the insert ring are forcibly incorporated and fixed with metals having different mechanical properties and physical properties, there is a problem in that the insert ring is loosened in the hole of the socket plate during use and detaches. there were. In order to solve such a problem, the applicant of the present invention has previously filed a Korean patent application (Patent Application No. 199).
No. 5-39893) has been proposed, but the manufacturing method is a first step in which an inner bearing is seated in a socket plate mold, and a molten metal is injected into the socket plate mold in which the bearing is seated. The socket plate is completed through a second step, a third step of applying a pressing pressure to the socket plate into which the molten metal is injected, and a fourth step of knocking out the solidified socket plate while the pressing pressure is being applied. is there.

However, the above-described method of manufacturing a socket plate has an effect of shortening the manufacturing time and improving productivity by reducing the number of manufacturing steps. However, again, the socket plate and the inner bearing have mechanical properties and physical properties. Since the socket is fixed to the metal having different mechanical properties, that is, the inner bearing by casting, there is a problem that the inner bearing is loosened by the hole of the socket plate during use.

[0012]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned various problems, and is intended to prevent an insert ring inserted and fixed in a hole of a socket plate from coming off. It is an object of the present invention to provide a method for manufacturing a socket plate for a compressor.

[0013] Further, the present invention is to fix metals having different mechanical properties and physical properties from each other, that is, by fixing a socket plate and an insert ring by hot forging.
It is an object of the present invention to provide a method of manufacturing a socket plate of a compressor which not only simplifies the manufacturing process but also enables mass production. It is another object of the present invention to provide a method for manufacturing a socket plate of a compressor, in which an oil groove is formed on an inner peripheral edge of an insert ring during hot forging so that a step of processing the oil groove can be omitted.

[0014]

In order to achieve the above-mentioned object, the present invention provides an apparatus having a fixed inclination angle with respect to a rotation axis.
Connecting rod by the socket plate
Through the piston in the cylinder according to the inclination angle
When reciprocating, one piston compresses refrigerant gas,
The other piston has a pressure of a type that sucks the refrigerant gas.
In the method of manufacturing socket plates for compressors,
Insert ring with multiple oil grooves in lower mold
After placing on the mounting part, the outer circumference of the insert ring
The lower part is inserted so that the base material of the socket plate is inserted.
Placed on the mounting part of the mold, press pressure is applied to the upper mold.
In addition, the insert recess is formed by the amount of the oil groove.
The convex part extruded on the outer peripheral edge of the
It is characterized by being fixed.

The present invention also provides the insert ring and
The mechanical and physical properties differ from each other
Features.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below with reference to the accompanying drawings. 1a to 1f are process diagrams showing a method for manufacturing a socket plate for a compressor according to the present invention.

FIG. 1a shows a first step of forming an insert ring by extrusion. The insert ring is extruded into a pipe 1 having a constant diameter by an extruder so as to be inserted into a hole of a socket plate described later. . And
The base material extruded into the shape of the pipe 1 is cut by a cutting machine (not shown) to form the insert ring 10.
The diameter of the insert ring 10 is preferably smaller than the inner diameter of the hole of the socket plate, so that it can be easily inserted into the hole.

In a second step of forming the base material of the socket plate by extrusion as shown in FIG. 1b, a hole 11 is formed in the center of the aluminum alloy by an extruder, and a plate bar 12 having a predetermined shape is formed. Extrude. Then, the extruded plate bar 12 is cut by a cutting machine (not shown) to cut the base material 20 of the socket plate.
Is molded.

FIG. 1C is a sectional view showing a mold for hot-forging the socket plate. The forging mold 30 for the socket plate comprises an upper mold 31 and a lower mold 32 . The upper mold 31 is pressurized by driving a press,
A pressing rod 33 is formed at the center, and a number of protrusions 34 are formed at the outer peripheral edge thereof. The oil groove 2 is formed on the inner peripheral edge of the insert ring 10 at the time of forging by the projecting portion 34. Therefore, a separate process for processing the oil groove 2 is not required. The lower mold 32 has a mounting portion 35 in the center where the insert ring 10 is mounted.

Therefore, the upper mold 31 of the present invention is formed in a shape corresponding to the bottom surface of the socket plate 104 on the surface in contact with the product, and the lower mold 32 is formed in a shape corresponding to the upper surface of the socket plate 104. ing. FIG.
FIGS. 1D to 1F show a third step of manufacturing a socket plate using a socket plate mold. In this third step, the insert ring 10 formed in the first step is manufactured.
Is mounted on the mounting portion 35 of the lower mold 32, and the hole 11 of the base material 20 of the socket plate formed in the second step is inserted into the outer periphery of the insert ring 10 to be mounted on the lower mold 32 ( (See FIG. 1d).

Thereafter, a pressing pressure is applied to the upper mold 31, and at this time, the pressing rod 33 of the upper mold 31 is inserted into the insert ring 1 mounted on the mounting portion 35 of the lower mold 32.
And at the same time, a plurality of oil grooves 2 are formed on the inner peripheral edge of the insert ring 10 by the protrusions 34 protruding from the outer periphery of the pressing rod 33 by the pressure of the press. The extruded convex portion is formed on the outer peripheral edge of the insert ring 10 by an amount corresponding to the formation of 2.

The base material 20 of the socket plate is
At the same time as the shape of the socket plate is formed by the lower molds 31 and 32, the base material 20 is tightly fixed to the outer peripheral edge of the insert ring 10, and the pressing pressure is removed from the upper mold 31 as shown in FIG. Thus, the socket plate 104 is removed from the lower mold to form the socket plate 104 (see FIGS. 1E and 1F).

The third step is carried out by hot forging, preferably at a heating temperature of 200 ° C. to 450 ° C. Since this can increase the degree of working, a large amount can be worked in the same time. Not only can productivity be increased, but also the microstructure can be reduced. FIG. 2 is a cross-sectional view showing a state in which the socket plate 104 is completed, as shown in FIG.
Is not removed from the hole.

[0024]

As described above, the present invention inserts and fixes metals having different mechanical properties and physical properties into holes in the socket plate by fixing the socket plate and the insert ring by hot forging. The manufacturing process is simplified by preventing the insert ring from being detached and forming an oil groove on the inner peripheral edge of the insert ring during hot forging so that the groove processing step can be omitted. In addition, there is an effect that mass production is possible.

[Brief description of the drawings]

FIG. 1a shows an insert ring formed by extrusion in a first step.

FIG. 1b shows a socket plate formed by extrusion in a second step.

FIG. 1c is a sectional view showing a socket plate forging die.

FIG. 1d is a cross-sectional view showing a state where a base material of an insert ring and a socket plate is placed on a lower mold in a third step.

FIG. 1e is a cross-sectional view showing a state in which the upper die is lowered with the base material of the insert ring and the socket plate placed on the lower die.

FIG. 1f is a cross-sectional view illustrating a state where a press pressure is applied in a state where the base material of the insert ring and the socket plate is placed on the lower mold in the third step.

FIG. 2 is a sectional view of a socket plate completed by the manufacturing method of the present invention.

FIG. 3 is a sectional view of a compressor provided with a socket plate.

[Description of Signs] 2 ... oil groove, 10 ... insert ring, 20 ... base material of socket plate, 30 ... forging die, 31 ... upper die,
32 ... lower mold, 33 ... pressing rod , 34 ... protruding part, 35 ...
Mounting part, 104: Socket plate

Claims (2)

(57) [Claims] 1. A device provided at a constant inclination angle with respect to a rotation axis.
Through the connecting rod with the socket plate
The piston reciprocates in the cylinder according to the inclination angle
When one piston compresses refrigerant gas, the other piston
The piston is for a compressor of the type that sucks the refrigerant gas.
In the method of manufacturing a socket plate, a plurality of
Place the insert ring with the oil groove in the lower mold
After placing the insert ring on the outer periphery of the insert ring,
The lower mold so that the base material of the ket plate is inserted
Placed on the mounting part and press pressure is applied to the upper mold.
Outside the insert ring by the amount of the oil groove
It is closely attached and fixed to the base material by the convex portion extruded to the periphery.
Of manufacturing a socket plate for a compressor characterized by the following:
Law. 2. The insert ring and the base material
Contractors characterized by different mechanical and physical properties from each other
A method for manufacturing a socket plate for a compressor according to claim 1.