KR20150073243A - Piston ring assembly system - Google Patents

Abstract

The present invention relates to a piston ring assembly system comprising: a piston supplier to supply a piston; at least one piston ring assembler including an assembly station to load and unload the piston supplied from the piston supplier, a ring supply unit to stack piston rings and to drop the piston rings one by one, a ring loading unit to receive the piston ring falling from the ring supply unit and to load the piston ring to the assembly station, and a ring assembly unit to assembly the piston ring loaded to the assembly station on a ring groove of the piston; a piston discharger to discharge the piston wherein assembly of the piston ring is completed in the piston ring assembler; and a piston carrier which moves the piston from the piston supplier through the piston ring assembler to the piston discharger while unloading the piston wherein the piston ring is assembled and loads the piston on the assembly station when the piston ring is loaded. Provided is the piston ring assembly system having effects of reducing labor costs while significantly improving productivity by quickly, correctly, and automatically assembling a piston ring on a piston; and automatically assembling a piston ring on a corresponding piston depending on a kind of a piston applied to various types of engines.

Description

[0001] Piston ring assembly system [0002]

The present invention relates to a piston ring assembly system, and more particularly, to a piston ring assembly system capable of automatically and quickly assembling a piston ring to a piston of an engine and capable of automatically assembling a piston ring corresponding to various types of model- ≪ / RTI >

Generally, as shown in FIGS. 1 and 2, a piston 1 of an automobile engine has a plurality of ring grooves 3 formed on the outer peripheral surface thereof, and a piston ring 10 is assembled to the ring grooves 3. As shown in FIG.

The piston ring 10 includes a top ring 19 assembled to a ring groove 3c on the piston 1 and a second ring 17 and a second ring 17 which are assembled to the ring groove 3b under the top ring 19. [ An oil ring 15 that is assembled to the ring groove 3a of the housing 1, and the like.

These piston rings 10 have a shape in which one region in the circumferential direction has an open shape, and an elastic diameter and shaft diameter are possible by the open end structure. The process of assembling the piston rings 10 to the corresponding ring grooves 3a, 3b and 3c of the piston 1 is performed in such a manner that the corresponding ring grooves 3a, 3b, 3c.

Conventionally, the assembling of the piston ring 10 has been performed manually by the operator, but it has been disadvantageous in that the productivity is lowered due to the remarkably low assembling speed and the labor cost must be borne.

However, as described in Korean Patent Publication No. 10-0623760, the assembling jig for assembling the piston ring 10 is provided to improve the assembling speed, It is necessary to assemble the piston 1 to the piston 1, so that there is a problem in that the productivity can not be improved and the labor cost still has to be borne.

The oil ring 15 of the piston rings 10 prevents the oil remaining on the inner wall of the cylinder of the engine block from flowing into the combustion chamber. As described above, when the piston ring 1 is assembled to the lower ring groove 3a of the piston 1 do.

The oil ring 15 has a different structural form depending on the type of the engine. For example, the oil ring 15 includes a drill type, a slot type, a radial slot type, a wedge slot type, a U-flex type, an expander type, (15).

1, the expander-type oil ring 15 includes an expander 15a and a pair of side walls 15a, 15b interposed between the expander ring 15a and one side wall of the ring groove 3a formed in the lower portion of the piston 1, The ring 15b is assembled together and the oil ring 15 having the outer ring 25a and the inner ring 25b is inserted into the inner circumferential groove 25c of the outer ring 25a with the inner ring 25b And is assembled to the corresponding ring groove 3a of the piston 1. [ The oil ring 15 having the outer ring 25a and the inner ring 25b is a type optimized for the piston 1 for the gasoline direct injection engine (GDi engine) which is widely used in recent years.

However, such an oil ring 15 is very inconvenient to be assembled to the ring groove 3a of the piston 1 due to its structural characteristics.

1 is different from the other piston rings 10 in the shape of a plurality of irregularities or spirals along the circumferential direction, the piston 1 is deformed by self- There occurs a phenomenon in which both sides of the open end of the oil ring 15 mutually engage before the oil ring 15 is assembled. As a result, the operator must release the engagement state of both sides of the open end of the expander-type oil ring 15 during the assembling process, so that the assembling operation is very difficult. Therefore, automation of assembling the expander-type oil ring 15 is also very difficult.

2, the oil ring 15 of the form having the inner ring 25b and the outer ring 25a is such that the inner ring 25b is accommodated in the inner peripheral groove 25c of the outer ring 25a, Since a part of the inner ring 25b is released to the outside even in case of slight carelessness or small shaking in the process of assembling the piston ring 15 to the ring groove 3a of the piston 1, the assembling work is very difficult.

Since the oil ring 15 having the inner ring 25b and the outer ring 25a is assembled to the ring groove 3a of the piston 1 in a diametric state in which the elastic ring can be diametrically enlarged and reduced in diameter as described above, When the oil ring 15 is assembled to the ring groove 3a of the piston 1, a portion of the ring 25b in the process of elastic shrinking of the ring 25a and the ring 25b causes the inner circumferential groove 25c So that the outer ring 25a and the inner ring 25b overlap each other.

Thus, the process of assembling the oil ring 15 to the ring groove 3a of the piston 1 is not easy, and it is very difficult to automate the assembly of the oil ring 15 in particular.

In addition to the oil ring 15 having the expander-type oil ring 15 and the inner ring 25b and the outer ring 25a, other types of oil rings 15 may also be used as the piston ring (not shown) such as the top ring 19 or the second ring 17 10), their structural characteristics are unusual and assembly work is difficult and assembly automation is very difficult.

Other piston rings 10, such as the top ring 19 and the second ring 17, as well as the oil ring 15 are also made elastic in diameter and shaft diameter in the process of being assembled to the piston 1, ) When the assembly process depends on the manual operation of the operator or on the assembly jig, pay special attention so that the open end of the piston ring 10 does not strike the outer circumferential surface of the piston 1 during the process of resiliently reducing the piston ring 10 I need to. Thereby, there is a problem that the assembling work of the piston ring 10 is extremely difficult.

In addition, the elastic shaft diameter of the piston ring 10 poses a very difficult problem in automating the assembly of the piston ring 10. It is very difficult to automate the assembly process of the piston ring 10 because the piston 1 can flow in any direction in the process of resiliently reducing the piston ring 10.

Particularly, the piston ring 10 is assembled to the corresponding ring groove 3a in which the top ring 19, the second ring 17 and the oil ring 15 having different structures are formed in one piston 1, There is a problem that it is very difficult to automate all the processes of assembling the top ring 19, the second ring 17 and the oil ring 15 to the piston 1 because of different structural characteristics and different assembling characteristics.

In addition, since the piston ring 10 assembled to the piston 1 and the piston 1 also has different structural characteristics depending on the type of engine, the piston ring 10 can be assembled in various types of pistons 1 There is considerable difficulty in automation.

As a result, the assembly process of the piston ring is limited to the manual operation of the operator or the assembly jig necessary for the operator while taking the labor costs and the productivity lower.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a piston ring assembly system capable of quickly and accurately assembling a piston ring to a piston, thereby significantly increasing productivity and reducing labor costs.

Another object of the present invention is to provide a piston ring assembling system capable of automatically assembling a piston ring corresponding to the type of piston applied to various types of engines.

This object is achieved according to the present invention by a piston ring assembly system comprising: a piston feeder for feeding a piston; An assembly station in which the piston supplied from the piston feeder is loaded and unloaded, a ring supply unit for dropping the piston rings one by one while loading the piston rings, and a ring loading unit for receiving the piston ring dropped from the ring supply unit, At least one piston ring assembly having a unit, a ring assembly unit for assembling the piston ring loaded in the assembly station into the ring groove of the piston; A piston discharger for discharging the assembled piston from the piston ring in the piston ring assembler; A piston for moving the piston from the piston feeder through the piston ring assembler to the piston ejector while loading the piston into the assembly station when the piston ring is loaded and a piston for unloading the assembled piston from the piston ring, Wherein the piston ring assembly comprises a piston ring assembly.

Wherein the ring supply unit includes a magazine for vertically loading the plurality of piston rings; Preferably, the ring loading unit includes a loading plate reciprocating between a ring receiving position adjacent to a lower portion of the magazine and a loading position moved to the assembly station, and a plate driver reciprocating the loading plate.

And the ring assembly unit includes a gripper for grasping the piston ring in the assembly station or for grasping or grasping the gripped piston ring, and a gripper for pressing the piston ring to the corresponding ring groove of the piston when the grip ring releases the grip ring And a positioning guide means for guiding the position of the enlarged and reduced diameter piston ring to a position corresponding to the ring groove.

Further, the piston feeder has a feed conveyor for continuously feeding the piston to the piston feeder, and pre-assembly checking means for checking the presence or absence of a defect of the piston from the feed conveyor to the piston feeder; Wherein the piston discharger includes a discharge conveyor for discharging the piston having the piston ring assembled from the piston ring assembler to the piston and discharging the piston from the piston to the discharge conveyor for assembling the piston ring of the piston facing the discharge conveyor, It is more preferable to have a post-inspection means.

The piston ring pliers include an oil ring assembly for assembling an oil ring of the piston ring to the piston, a second ring pliers for assembling the second ring of the piston ring to the piston, It is more effective that it is composed of a top ring granulator for assembling.

Here, it is preferable that the piston ring assembler is disposed in the order of the oil ring assembler, the second ring assembler, and the top ring assembler from the piston feeder side toward the piston emitter side.

It is effective that the oil ring assembler is provided with a plurality of selectively drivable members.

Wherein the oil ring assembler includes at least a pair of side rings and an expander oil ring assembly for assembling an expander interposed between the both side rings to a corresponding ring groove of the piston; And a GDi oil ring assembler for assembling an oil ring for a gasoline direct injection (GDi) engine piston having an outer ring and an inner ring accommodated in the inner circumferential groove of the outer ring to a corresponding ring groove of the piston, Do.

At this time, it is more effective that the expander oil ring assembler has an expander assembler for assembling the expander to the corresponding ring groove of the piston, and a pair of side ring assemblers for assembling the both side rings at the upper and lower portions of the expander, respectively .

Further, the ring supply unit of the expander assembler is such that the expanders are vertically stacked on the magazine; A ring pressing portion for dropping the expanders one by one in the magazine lower region, and a release preventing means for preventing any fall of the expanders.

In addition, it is effective that the magazine has a stacking portion for stacking the expanders so as to surround the stacking portion, and a ring-shaped portion which is provided in the lower portion of the stacking portion in a gradually reduced downward direction to guide the expander to fall in a state of being enlarged.

In addition, the magazine may be formed at one side thereof with an end portion spaced-apart retention rib which is spaced apart from the open end of the expander in a vertical direction.

At this time, it is effective that the deviation preventing means is a magnet provided on the ring-shaped portion.

It is preferable that the ring loading unit of the expander assembler has a spacing holding piece corresponding to the end spaced glass rib of the magazine at the ring receiving position on the loading plate.

In addition, it is effective that at least an area of the loading plate in contact with the expander is provided with an attaching magnet for preventing horizontal expansion and contraction of the expanding ring.

Meanwhile, the ring assembly unit of the GDi oil ring assembler may be configured such that the gripper grips and enlarges the oil ring while pressing the inner ring inwardly into the inner circumference groove of the outer ring, or when the piston is loaded on the assembly station, Release the grip; It is preferable that the ring pressing means presses the outer ring toward the corresponding ring groove side of the piston when the gripper releases the oil ring.

At this time, the grippers are provided at a plurality of intervals at regular intervals along the circumferential direction of the oil ring, and the gap between the grippers is smaller than the area where the grippers are in contact with the inner ring. It is preferable that the area where each gripper contacts the inner ring is an area in the range of 60 DEG to 180 DEG in the circumferential direction when viewed from the plane of the oil ring.

Wherein the ring pressing means includes a plurality of pressing portions provided at predetermined intervals in a peripheral region of the oil ring and reciprocating in a direction opposite to a direction of pressing the outer ring toward the ring groove side; It is effective to have the pressing piece driver that reciprocally drives the pressing piece at least once.

And the positioning guide means provided in the ring assembly unit of the GDi oil ring assembler includes a V-groove side end face having a valley corresponding to a peripheral region of the ring groove of the piston loaded on the assembly station, It is more preferable to have a guide block having a V-groove flat section and a guide spring for resiliently urging the guide block toward the ring groove side of the piston.

It is more effective that at least one of the second ring assembler and the top ring assembler is provided with a plurality of selectively driveable units.

According to the present invention, there is provided a piston ring assembling system capable of assembling a piston ring to a piston quickly and accurately automatically, thereby remarkably increasing productivity and reducing labor costs.

In addition, a piston ring assembling system capable of automatically assembling a corresponding piston ring in accordance with the type of piston applied to various types of engines is provided.

1 and 2 show a piston perspective view (a) and an enlarged cross-sectional view (b) of a piston ring assembly region,
3 is a top view of a piston ring assembly system according to the present invention,
Figure 4 is a side view of the piston ring assembly system of Figure 3,
5 is a perspective view schematically illustrating a main piston ring assembly region of a piston ring assembly system according to the present invention,
Figure 6 is a side cross-sectional view of the expanding granulator of Figures 3-5,
Fig. 7 is a perspective view schematically showing the expanding assembling area of Fig. 6,
Figs. 8 to 15 are sectional views of a main part side view showing an operation process of the expanding granulator of Figs. 6 and 7. Fig.
Figure 16 is a side cross-sectional view of the GDi oil ring assembly of Figures 3-5,
17 is a perspective view schematically showing the GDi oiling assembly region of Fig. 16, Fig.
Figs. 18 to 25 are cross-sectional side views of essential parts showing the operation of the GDi oiling assembly of Figs. 16 and 17. Fig.
Fig. 26 is a side sectional view of the general ring assembler of Figs. 3 to 5,
Fig. 27 is a perspective view schematically showing a general ring assembling area of Fig. 26,
28 to 35 are cross-sectional side views of main parts showing the operation of the general ring assemblies of Figs. 26 and 27;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A piston ring assembling system according to the present invention will be described in detail with reference to the accompanying drawings.

3 to 5, a piston ring assembling system 501 according to the present invention includes a piston feeder 510 for feeding a piston 1, a piston feeder 510 for feeding the piston 1, A piston ring assembler 520 for automatically assembling the oil ring 15, the second ring 17 and the top ring 19 to the ring grooves 3a, 3b and 3c formed on the outer circumferential surface, The piston 1 is moved from the piston feeder 510 to the piston ejector 530 via the piston ring assembler 520. The piston 1 is moved to the piston ejector 530 through the piston ring assembly 520, And includes a piston transfer device 540.

The piston feeder 510 includes a feed conveyor 511 for loading a plurality of pistons 1 and feeding the pistons one by one to the feeder 540 and a piston 511 for moving the pistons from the feed conveyor 511 toward the feeder 540 1) is inspected for the presence or absence of defects.

The feed conveyor 511 sequentially transports the pistons 1 one by one to the trays 542 of the piston conveyor 540, which will be described later, with the pistons 1 mounted on the conveyor in at least one row. At this time, it is preferable to provide the contact preventing means 513 on the conveyor so that the loaded pistons 1 do not contact each other.

The contact preventing means 513 may be provided as an elastic member for partitioning the pistons 1 and preventing damage to the outer circumferential surface of the piston 1 or may be provided with a shape in which the piston 1 is loaded with an elastic material on the conveyor And the like. Of course, the contact preventing means 513 may use the above-described elastic member or the like or other mechanical means within the range in which mutual contact of the pistons 1 can be prevented.

In addition, when the pistons 1 are stacked on a conveyor in the form of a plurality of thermal loads, the supply of the pistons 1 can be performed in a plurality of thermal loads such as a two- A plurality of columns of pistons 1 are alternately arranged in the respective rows in the row of the trays 542 of the piston transporters 540 at the end of the conveyor 511 facing the tray 542 of the piston transporter 540, The piston supply guide means 515 is preferably provided.

The pre-assembly inspection means 517 includes a vision camera (not shown) for photographing the exterior of the piston 1 loaded on the tray 542 of the piston transporter 540 from the supply conveyor 511, The outer appearance of the piston 1 and the type of the piston 1 are determined in advance based on the defective range of the outer appearance of the piston 1 preset in the controller (not shown) (Not shown) for reading whether or not the piston 1 is of the type corresponding to the assembling process.

The piston ring assembling system 501 is stopped or an alarm sound is generated when the piston 1 is read by the pre-assembly inspecting means 517 for the appearance defect of the piston 1 or by the piston 1 of the other kind, 1) It is possible to convey the supply deficiency situation.

The external appearance of the piston 1 is checked by checking the presence or absence of abnormality on the outer peripheral surface of the piston 1 and the presence or absence of the ring grooves 3a, 3b and 3c of the piston 1, , In which the appearance of the piston 1 in the good condition for each type of piston 1 is photographed and its data is stored in the controller in advance and the image of the good article is compared with the shot image of the supplied piston 1 Lt; / RTI > The kind of the piston 1 can also be read in such a manner that data obtained by previously photographing the model name displayed on the piston 1 for each kind is stored in the controller and compared with the model name displayed on the supplied piston 1. [

On the other hand, the piston ring assembler 520 assembles the piston ring 10 to the piston 1 which is loaded on the tray 542 of the piston transporter 540 from the piston feeder 510 and moves to the piston ejector 530 side . Here, the piston ring 10 is an oil ring 15, a second ring 17, and a top ring 19 assembled to the outer peripheral surface of the piston ring 10 as described above. A piston ring 10 of a typical engine is composed of an oil ring 15, a second ring 17 and a top ring 19. Among them, the oil ring 15 has various types according to its shape. In addition, the top ring 19 can be distinguished for a flexible engine engine and a non-fuel engine engine. At least one of the second ring (17) and the top ring (19) is assembled to the outer peripheral surface of the piston (1).

The piston ring assembler 520 thus includes at least one oil ring assembler 600 for assembling the oil ring 15 of the piston ring 10 and at least one piston ring 10 for assembling the second ring 17 of the piston ring 10. [ And at least one top ring assembler 800 for assembling the top ring 19 of the piston ring 10. [

The piston ring assembler 520 is preferably disposed in the order of the oil ring assembler 600, the second ring assembler 801, and the top ring assembler 800 from the piston supplier 510 side toward the piston emitter 530 side. This allows the piston rings 10 to be assembled in order from the lower part of the outer circumference of the piston 1 to the upper part so as to protect the lower piston ring 10 assembled before, So as not to interfere with the assembling process. A detailed description thereof will be described later.

The piston ring assembler 520 of the piston ring assembling system 501 according to the present invention has substantially the same configuration of the second ring assembler 801 and the top ring assembler 800 except for the oil ring assembler 600. [ Accordingly, the second ring assembler 801, the top ring assembler 800, and the like will be collectively referred to as a general ring assembler 301 hereinafter. The oil ring assembler 600 has a structure corresponding to the structural characteristics of various oil rings 15 as described above. In the present invention, the oil ring 15 and the ring ring 15, which are most widely used, An expander oil ring assembler 601 and a GDi oil ring assembler 201 for assembling the oil ring 15 in the form of having the outer ring 25a and the outer ring 25a are applied to the piston ring assembling system 501 of the present invention . Of course, according to the present invention, the oiling assemblies 600 can be added or replaced with other types of oiling assemblies 600 in addition to the expander oiling assemblies 601 and the GDi oiling assemblies 201. [

The piston ring assembler 520 provided in the piston ring assembling system 501 according to the present invention may be mounted to the GDi oiling assemblies 201 in the direction from the area adjacent to the piston feeder 510 toward the piston ejector 530. [ An expander oil ring assembler 601, a second ring assembler 801, and a top ring assembler 800 are sequentially arranged.

The expander oil ring assembler 601 includes an expander assembler 101 for assembling the expander 15a to the corresponding ring groove 3a of the piston 1 so as to correspond to the structural characteristics of the expander oil ring 15, And a pair of side ring assemblies 830 for assembling the side rings 15b on the upper and lower portions of the expander 15a assembled to the piston 1. [ Side side ring assembler 830 has substantially the same configuration as the general ring assembler 301 described above, reference is made to the following description of the general ring assembler 301. [

As a result, the piston ring assembler 520 of the piston ring assembling system 501 according to the present invention will be hereinafter referred to as the GDi oiling assembler 201, the expander assembler 101, the first side ring assembler 831, A second ring assembly 801 and a top ring assembly 800 are provided in this order from the top ring assembly 800. The top ring assembly 800 preferably includes a first top ring 804 for assembling the top ring 19 of the engine piston 1 for a non- An assembling machine 810 and a second top ring assembler 820 for assembling the top ring 19 of the engine piston 1 for a non-related engine will be described.

That is, the piston ring assembler 520 of the piston ring assembling system 501 according to the preferred embodiment of the present invention includes the GDi oiling assemblies 201 in the direction toward the piston ejector 530 from the area adjacent to the piston feeder 510, The first side ring assembler 831, the second side ring assembler 832, the second ring assembler 801, the first top ring assembler 810 and the second top ring assembler 820 in this order Respectively.

The first side ring assembler 831, the second side ring assembler 832, the second ring assembler 801, the first top ring assembler 810, and the second top ring assembler 820 have substantially the same configuration, 5, the GDi oiling assemblies 201, the expander assemblies 101, and the general ring assemblies 301 are collectively referred to as " general ring assembler 301 " The piston ring assembler 520 provided in the piston ring assembling system 501 will be described in detail.

6 to 15, the GDi oil ring assembler 201 includes an assembly station 210 for forming an area for assembling the oil ring 15 to the piston 1, an outer ring 25a, A ring supply unit 220 for loading a plurality of oil rings 15 made up of the inner ring 25b and supplying the oil ring 15 one by one to the ring loading unit 230 to be described later, A ring loading unit 230 for moving the oil ring 15 to the assembly station 210 and an oil ring 15 which has been moved to the assembly station 210 by the ring loading unit 230, And a ring assembling unit 240 assembled to the ring groove 3a.

The assembly station 210 is provided with a piston loading hole 211 to the extent that the outer circumferential surface of the piston 1 can be smoothly received as an assembly space for assembling the oil ring 15 to the ring groove 3a under the piston 1, Respectively.

The piston 1 is loaded on the tray 542 of the piston feeder 540 from the piston feeder 510 and automatically loaded into the piston loading hole 211 of the assembly station 210, And may be unloaded in the post-piston loading hole 211. At this time, before the piston 1 is loaded, the oil loading 15 is preloaded by the ring loading unit 230 in the piston loading hole 211, and is waited with the gripper 241 to be described later.

The assembly station 210 is also provided with positioning guide means 213 for guiding the position of the oil ring 15 which is enlarged and reduced by the gripper 241 to a position corresponding to the corresponding ring groove 3a of the piston 1, Respectively.

The position setting guide means 213 accurately positions the expanded position of the oil ring 15 around the ring groove 3a of the piston 1 and simultaneously presses the ring pressing means 245 of the ring assembly unit 240 Guides the oil ring 15 to be accurately assembled to the ring groove 3a of the piston 1 in the process of assembling the oil ring 15 into the ring groove 3a of the piston 1. [

The positioning guide means 213 includes a fixed guide 214 structurally fixed in a circumferential direction of the piston loading hole 211 of the assembly station 210 and a ring guide unit 240 And an elastic pressing guide 215 which elastically pressurizes the oil ring 15 which is enlarged and reduced in diameter in the piston loading hole 211 toward the ring groove 3a of the piston 1. [

The elastic pressing guide 215 has a V-groove side end face and a flat end face and is elastically biased toward the ring groove 3a of the piston 1 at a position corresponding to a part of the circumference of the oil ring 15 A guide block 217 for pressurizing and a guide spring 218 for elastically supporting the guide block 217. The resilient pressing force guides the inner ring of the piston 1 in the diameter direction of the piston ring 1 in the process of diameter enlarging of the oil ring 15 by making the position of the inner rim in the V groove side end face correspond to the ring groove 3a of the piston 1. [ The oil ring 15 is elastically deformed so that the oil ring 15 can be accurately inserted into the ring groove 3a of the piston 1 during the diameter reduction process of the oil ring 15, ).

The ring supply unit 220 has a magazine 221 for vertically stacking a plurality of oil rings 15.

The magazine 221 has a loading part 222 on which the outer ring 25a and the inner ring 25b are pre-coupled with the oil rings 15 and an upper part of the loading part 222, And a loading guide portion 223 for loading the loading portion 222 smoothly.

The loading section 222 is vertically arranged with a plurality of circular bars spaced from each other in the circumferential direction in contact with the outer circumferential surface of the oil ring 15. The upper and lower ends of the loading part 222 are coupled to the loading guide part 223 and the lower guide cap 224. At this time, the inner circumferential surfaces of the loading guide portion 223 and the lower guide cap 224 coincide with a virtual circular inner circumferential surface formed by the circular bar of the loading portion 222. Of course, the loading part 222 may be provided in various forms such as a single cylindrical member or the like rather than a plurality of circular bars.

It is preferable that the load guide portion 223 is coupled to the upper end of the loading portion 222 and has an inner peripheral downward diametric structure in which the inner peripheral surface of the upper region is reduced to coincide with the inner peripheral surface of the loading portion 222 toward the lower end. This is so that the oil ring 15 can be smoothly loaded into the loading section 222. [

The lower guide cap 224 is coupled to the lower end of the loading part 222 and the lower end area is close to the upper surface of the loading plate 231 at the ring receiving position of the loading plate 231 to be described later. The loading plate 231 of the oil ring 15 located at the lowermost end of the lower guide cap 224 is dropped onto the loading plate 231 when the loading plate 231 is positioned at the ring receiving position, The oil ring 15 which is positioned at the lowermost end of the lower guide cap 224 can not fall down due to the structure of the upper surface of the rear region of the loading plate 231 and waits.

The ring loading unit 230 includes a loading plate 231 for receiving the oil ring 15 falling from the magazine 221 and moving the oil ring 15 to the assembly station 210 and a plate driver 231 for driving the loading plate 231 233).

The loading plate 231 is reciprocally movable between a ring reception position adjacent to the lower end of the lower guide cap 224 of the magazine 221 and a loading position located in the piston loading hole 211 of the assembly station 210 .

The upper surface of the loading plate 231 is provided with an oiling receiving surface 235 for receiving the oiling ring 15 falling from the magazine 221 of the ring feeding unit 220, The oil ring 15 is staggered at the rear of the oil receiving surface 235 to prevent the oil ring 15 from falling down at the lowermost end of the magazine 221 when the oil ring 15 is moved to the assembly station 210 And a surface 236. The oil ring atmosphere holding surface 236 is formed at a higher position than the oil ring receiving surface 235 of the oil ring 15 and the upper surface of the oil ring holding surface 236 is engaged with the magazine 251 when the loading plate 231 moves toward the assembly station 210 The adjacent spacing between the oil ring atmosphere holding surface 236 and the lower end of the lower guide cap 224 of the magazine 221 is such that the oil ring 15 So that the oil ring 15 waiting at the lower end of the lower guide cap 224 of the magazine 221 is not dropped arbitrarily.

The loading plate 231 is preferably provided with an attachment magnet 237 at least in a region where the oil ring 15 is in contact. This prevents horizontal displacement of the oil ring 15 dropped from the magazine 221 and separation of the oil ring 15 from the loading plate 231 and prevents the loading plate 231 So as to be able to fall to the correct position.

The plate driver 233 may be provided with various types of linear reciprocating actuators including hydraulic or pneumatic cylinders and the like. The plate driver 233 moves the loading plate 231 to the loading position of the piston loading hole 211 of the assembly station 210 when the oil ring 15 is loaded on the loading plate 231, When the oil ring 15 is largely held on the gripper 241 to be described later in the hole 211, the loading plate 231 is returned to the ring reception position.

The ring assembly unit 240 includes a gripper 241 for grasping and gripping the oil ring 15 delivered to the piston loading hole 211 of the assembly station 210 and a gripper 241 for gripping the oil ring 15 And a ring pressing means 245 which presses the oil ring 15 toward the ring groove 3a of the piston 1 when grasping the oil ring 15.

The gripper 241 is installed in an upper region of the piston loading hole 211 so as to be able to move up and down in a region above the piston loading hole 211. When the oil ring 15 is transferred to the piston loading hole 211, The oil ring 15 is grasped and enlarged. At this time, the grippers 241 are provided in plural so that a plurality of areas on the inner circumferential surface of the inner ring 25b of the oil ring 15 can be gripped and spaced at equal intervals.

At this time, it is preferable that the gap between the grippers 241 is smaller than the area where each of the grippers 241 contacts the inner ring 25b of the oil ring 15. That is, the area where the gripper 241 contacts the inner ring 25b is formed as large as possible. It is preferable that the area where each gripper 241 contacts the inner ring 25b is an area in the range of 60 ° to 180 ° in the circumferential direction when viewed from the plane of the oil ring 15. This is to prevent the inner ring 25b from being disengaged from the inner circumferential groove 25c of the outer ring 25a due to the structural characteristics of the resilient oil ring 15 formed of the inner ring 25b and the outer ring 25a.

The gripper 241 presses the inner ring 25b inward into the inner circumferential groove 25c of the outer ring 25a in the course of grasping and enlarging the oil ring 15.

When the piston 1 is received in the piston loading hole 211 while gripping the oil ring 15 while gripping the oil ring 15 while pressing the inner ring 25b, the gripper 241 releases the oil ring 15, Position. At this time, it is preferable that the outer surface of the gripper 241 has a grip guide surface 243 in the lower end region for smooth grasping and gripping of the oil ring 15.

The ring pressing means 245 includes a plurality of pressing pieces 246 provided at a predetermined interval in the peripheral region of the oil ring 15 and reciprocating in the direction opposite to the direction in which the outer ring 25a is pressed toward the ring groove 3a, And a pushing piece driver 247 for reciprocatingly driving the piece 246.

The pressing pieces 246 are standing by in the outer circumferential region of the oil ring 15 which is enlarged in the piston loading hole 211 of the assembling station 210 and the piston 1 is transferred to the piston loading hole 211 and the gripper 241 The outer ring 25a of the oil ring 15 is pressed toward the ring groove 3a of the piston 1 by driving the pressing piece actuator 247 in the course of releasing the oil ring 15. [ The oil ring 15 is moved in the ring groove 25a of the piston 1 in a state in which the inner ring 25b inwardly pressed against the inner ring groove 25c of the outer ring 25a is not separated from the outer ring 25a by the gripper 241, (3a).

The pushing piece actuator 247 may be provided with various types of linear reciprocating actuators including a hydraulic or pneumatic cylinder within a range in which the pushing piece 246 can reciprocate. At this time, it is preferable that the pressing piece driver 247 presses the outer ring 25a toward the ring groove 3a of the piston 1 in such a manner that the pressing piece 246 strikes a plurality of times. When the gripper 241 presses the outer ring 25a in the process of releasing the oil ring 15 and the presser 246 is assembled to the ring groove 3a of the piston 1 of the oil ring 15 It is possible to realize accurate and stable assembling of the oil ring 15 by pressing the pressing piece 246 a plurality of times so as to press the outer ring 25a in the process.

With the pressing action of the oil ring 15 of the ring pressing means 245, the gripper 241 is lifted while gripping the oil ring 15 and the oil ring 15 is pressed and pressed by the ring pressing means 245 And is correctly inserted into the ring groove 3a of the piston 1 by its own elastic restoring force.

The ring pressing means 245 may be provided in the circumferential region of the diameter-enlarged oil ring 15 in at least one or a plurality of intervals at predetermined intervals for the accuracy of assembly of the oil ring 15.

The process of automatically assembling the oil ring 15 made up of the inner ring 25b and the outer ring 25a to the ring groove 3a of the piston 1 using the GDi oil ring assembler 201 having such a configuration will be described with reference to FIGS. Referring to FIG.

The driving of the GDi oiling assemblies 201 is started with the plurality of oil rings 15 vertically stacked in the magazine 221. [

8, the loading plate 231 of the ring loading unit 230 is moved from the ring receiving position below the magazine 221 to the oil receiving face 235 The oil ring 15 at the lowermost portion of the magazine 221 drops onto the oil receiving surface 235 of the loading plate 231. As a result, At this time, due to the magnetic force of the attachment magnet 237 provided on the loading plate 231, the oil ring 15 is loaded on the loading plate 231 while being accurately leveled, and is not arbitrarily released. And the piston loading hole 211 of the assembly station 210 waits in an empty space.

10, when the oiling ring 15 is loaded on the oiling receiving surface 235 of the loading plate 231, the loading plate 231 is rotated by driving the plate driving unit 233 of the ring loading unit 230 And moves to the loading position on the assembly station 210 side to position the oil ring 15 in the piston loading hole 211. At this time, the oil ring atmosphere holding surface 236 formed on the rear side of the loading plate 231 is positioned adjacent to the lower end of the magazine 221, so that the oil ring 15 waiting at the lower end of the magazine 221 is not dropped Do not. When the loading plate 231 of the next oil ring 15 waiting at the lower end of the magazine 221 returns to its original position, the weight falls to the oil receiving face 235 by its own weight.

When the oil ring 15 is transferred to the piston loading hole 211 of the assembly station 210, the gripper 241 is lowered and the inner ring 25b of the oil ring 15 is inserted into the outer ring 25a While pressing the oil ring 15 toward the inner circumferential groove 25c side, the oil ring 15 is enlarged.

The oil ring 15 is pinched and the loading plate 231 returns to the ring receiving position such that the oil ring receiving surface 235 is adjacent to the lower end of the magazine 221 as shown in Fig.

The oil ring 15 that is expanded by the gripper 241 is positioned at a predetermined position, that is, in the piston loading hole 211, by the fixed guide 214, which is the positioning guide means 213, And is accurately positioned at a corresponding position adjacent to the outer periphery of the ring groove 3a of the accommodated piston 1. [ At this time, the guide block 217 of the elastic pressing guide 215 elastically presses the outer circumference of the outer ring 25a in which the inner ring 25b is pressed inward by the gripper 241, .

The piston 1 is supplied and received in the piston loading hole 211 by the piston transfer device 540 with the gripper 241 grasping the oil ring 15 as shown in Fig. At this time, the ring groove 3a of the piston 1 is correctly positioned by the positioning guide means 213 to be precisely positioned, and is accurately adjacent to the inner circumference of the waiting oil ring 15.

When the piston 1 is received in the piston loading hole 211, as shown in FIG. 14, the gripper 241 ascends to the upper region of the piston loading hole 211 while releasing the holding state of the oil ring 15, The elastic pressing guide 215 and the ring pressing means 245 of the setting guide means 213 press the oil ring 15 toward the ring groove 3a.

At this time, the elastic pressing guide 215 presses the outer ring 25a of the oil ring 15 toward the ring groove 3a of the piston 1 by the elastic force of the guide spring 218, The pressing means 245 presses the outer ring 25a of the oil ring 15 toward the ring groove 3a of the piston 1 a plurality of times by driving the pressing piece driver 247 do. Whereby the oil ring 15 composed of the inner ring 25b and the outer ring 25a is accurately assembled into the ring groove 3a of the piston 1. [

The piston 1 having completed the assembly of the oil ring 15 is inserted into the piston loading hole 211 of the assembly station 210 while the piston is loaded on the tray 542 by driving of the air feeder 540, And is then moved to the next general ring assembler 301.

The assembling process of the oil ring 15 having the inner ring 25b and the outer ring 25a is automatically and repeatedly carried out continuously so that the oil ring 15 can be automatically assembled to the piston 1 quickly and accurately.

In particular, the GDi oiling assemblies 201 according to the present invention are configured such that the gripper 241 in the assembly station 210 grips the gripper 241 in the process of enlarging the oil ring 15 comprised of the inner ring 25b and the outer ring 25a, Since the large area of the oil ring 15 is brought into contact with the inner peripheral surface area of the inner ring 25b to press the inner ring 25b inward into the inner peripheral groove 25c of the outer ring 25a to enlarge the oil ring 15, It is possible to completely prevent the inner ring 25b from being partially torn in the inner circumferential groove 25c of the outer ring 25a in the process of being enlarged.

The position setting guide means 213 accurately maintains the position of the oil ring 15 in the process of enlarging and reducing the diameter of the oil ring 15 and the ring pressing means 245 in the process of reducing the diameter of the oil ring 15, The inner ring 25b is pressed against the ring groove 3a of the piston 1 in a manner that the outer ring 25a strikes the outer ring 25a a plurality of times to completely prevent the ring 25b from being disengaged from the inner ring groove 25c of the outer ring 25a, Can be accurately and quickly assembled to the ring groove (3a) of the piston (1).

16 to 25, the expander oil ring assembler 601 also includes an assembly station 110 for forming an area for assembling the expander 15a to the piston 1, a plurality of expanding rings A ring supply unit 120 for loading the ring 15a and supplying the expander 15a to the ring loading unit 130 to be described later one by one and the expander 15a transmitted from the ring supply unit 120 to the assembly station And a ring assembling unit 130 for assembling the expander 15a moved to the assembling station 110 by the ring loading unit 130 into the ring groove 3a of the piston 1, (140).

The assembly station 110 is provided with a piston loading hole 111 having an extent that the outer circumferential surface of the piston 1 can be smoothly accommodated as an assembly space for assembling the expander ring 15a to the ring groove 3a in the lower portion of the piston 1, Respectively.

The piston 1 is transferred from the piston feeder 510 to the tray 542 of the piston feeder 540 and is automatically loaded into the piston loading hole 111 of the assembly station 110 and the expander 15a is assembled And can be unloaded in the rear piston loading hole 111. [ At this time, before the piston 1 is loaded, the ring loading unit 130 preliminarily loads the expander 15a in the piston loading hole 111 and waits in a state in which it is pivoted by the gripper 141 to be described later.

The assembly station 110 is further provided with positioning guide means 113 for guiding the position of the expander 15a enlarged and reduced in diameter by the gripper 141 to a position corresponding to the corresponding ring groove 3a of the piston 1, Respectively.

The position setting guide means 113 accurately positions the expanded position of the expander ring 15a around the ring groove 3a of the piston 1 and simultaneously presses the ring pressing means 145 of the ring assembling unit 140 Guides the expander ring 15a to be accurately assembled to the ring groove 3a of the piston 1 in the process of assembling the expander ring 15a to the ring groove 3a of the piston 1. [

The ring supply unit 120 includes a magazine 121 for vertically stacking a plurality of expanders 15a, a ring pressing unit 126 for dropping the expanders 15a one by one to the area below the magazine 121, (129) for preventing the expanders (15a) stacked on the base plate (121) from falling arbitrarily.

The magazine 121 has a stacking portion 122 on which the expanders 15a are stacked and a stacking portion 122 which is coupled to the upper end of the stacking portion 122 to allow the expanding ring 15a to be smoothly stacked on the stacking portion 122 A ring diameter portion 124 provided at a lower portion of the loading portion 122 and guiding the expander 15a to drop in a state of being enlarged and an end portion for holding the open end of the expander 15a in a spaced- And a spacing retaining rib 125.

The mounting portion 122 is vertically disposed such that a plurality of circular bars are spaced apart from each other in the circumferential direction in contact with the inner peripheral surface of the expander ring 15a. The upper and lower ends of the loading portion 122 are engaged with the loading guide portion 123 and the ring diameter portion 124. At this time, the upper outer circumferential surfaces of the load inducing portion 123 and the ring diameter portion 124 coincide with the imaginary circular outer circumferential surface formed by the circular bar of the loading portion 122. Of course, the loading part 122 may be provided in various forms such as a single cylindrical member instead of a plurality of circular bars.

It is preferable that the load guide portion 123 is coupled to the upper end of the loading portion 122 and has an upward diametric structure in which the outer peripheral surface of the upper region is reduced toward the upper end. This is to allow the expander 15a to be smoothly loaded into the loading part 122. [

The link diameter portion 124 is coupled to the lower end of the loading portion 122 and has a downward-facing diameter structure in which the outer circumferential surface of the lower region progressively expands toward the lower end. This downwardly-directed structure induces the expander 15a to fall in a state of being enlarged.

On the other hand, the end spacing ribs 125 are provided on one side of the magazine 121 so as to protrude outwardly along the vertical direction to keep the open end of the expander ring 15a apart. The expanders 15a loaded on the magazine 121 are vertically aligned with the magazine 121 while being spaced apart by the end spacing retaining ribs 125 in a state in which the open ends are all directed in one direction, The open end of the expander 15a can be stacked on the magazine 121 while preventing the open end of the expander 15a from overlapping due to structural characteristics.

The ring pressing portion 126 is composed of a pressing member 127 that can vertically lift the loading portion 122 of the magazine 121 and a pressing unit 128 that presses the pressing member 127 downward.

The pressing member 127 ascends and descends in the upper region of the expanders 15a so as to contact the uppermost expander 15a among the expanders 15a loaded on the loading portion 122 of the magazine 121, 128 press the pressing member 127 downward to a width corresponding to the thickness of the expander ring 15a. The expander 15a located at the lowermost end of the magazine 121 falls down to the bottom of the magazine 121 one by one by the driving of the pressing unit 128 and is fed to the loading plate 131 of the ring loading unit 130 .

Here, the structure of the pressing member 127 may have various structures within a range in which the expander 15a can stably downwardly push down. More preferably, the pressing member 127 is cylindrically shaped so that the upper horizontal surface of the expander 15a is uniformly lowered So that it can be pressurized.

The release preventing means 129 is provided to prevent the expander 15a loaded on the lower end region of the magazine 121 from dropping arbitrarily due to vibrations or the like which may occur during driving of the apparatus and driving of the ring pressing portion 126 A magnet may be included in the ring diameter portion 124 of the magazine 121. [

At this time, the deviation preventive means 129 provided as a magnet may be configured to embed the magnet along the circumferential direction around the lower end of the ring diameter portion 124. In this case, a single magnet having a ring shape or a plurality of magnets . Of course, the ring-shaped diameter portion 124 itself may be provided with a magnet.

This magnet type deviation preventive means 129 is configured such that the expander 15a located at the lower end of the ring diameter portion 124 of the magazine 121 is dropped by the downward urging action of the ring pressing portion 126, The ring 15a is held so as not to fall by the magnetic force of the magnet but in a state of being attached to the ring diameter portion 124 of the magazine 121. [ As a result, any drop of the expander 15a can be prevented.

The release preventing means 129 is provided in such a range as to allow the expander 15a to fall down by the pressing force of the ring pressing portion 126 while exerting a holding force to such an extent that the expander 15a can not fall freely, It is needless to say that a separate member made of a resin material such as rubber for providing frictional force can be suitably used.

The ring loading unit 130 includes a loading plate 131 for receiving the expander 15a falling from the magazine 121 and moving it to the assembly station 110 and a plate driver 133).

The loading plate 131 is reciprocally movable between a ring reception position adjacent to the lower end of the ring diameter portion 124 of the magazine 121 and a loading position located in the piston loading hole 111 of the assembly station 110.

In the loading plate 131, a spacing retaining piece 135 is provided protruding from the ring receiving position corresponding to the glass ribs at the end portion of the magazine 121. The spacing holding piece 135 prevents the expander 15a dropping in the diameter-enlarged state at the ring diameter portion 124 of the magazine 121 from overlapping on both sides of the open end by the elastic restoring force. Therefore, when the loading plate 131 is positioned at the ring reception position, the upper end of the spacing piece 135 is preferably positioned close to the lower end of the ring diameter portion 124 and the lower end of the free glass rib. As a result, a time margin in which both ends of the open end of the expander 15a are elastically reduced in diameter can be eliminated, and when the expander 15a is dropped on the loading plate 131, So that the spacing retaining piece 135 can be interposed. Thus, the expander 15a is loaded on the loading plate 131 with the open end thereof being spaced apart.

Further, it is preferable that the loading plate 131 is provided with an attaching magnet 137 in an area where at least the expander 15a is in contact. This prevents horizontal expansion of the expander 15a dropped from the magazine 121 and separation of the loading plate 131 from the outside of the loading plate 131. When the expander 15a is dropped from the magazine 121, So as to be able to fall to the correct position.

The plate driver 133 may be provided with various types of linear reciprocating actuators including a hydraulic or pneumatic cylinder. The plate driver 133 moves the loading plate 131 to the loading position of the piston loading hole 111 of the assembly station 110 when the expander 15a is loaded on the loading plate 131, The loading plate 131 is returned to the ring receiving position when the expander 15a is grasped by the gripper 141 to be described later in the hole 111. [

The ring assembly unit 140 includes a gripper 141 for grasping and gripping the expander 15a transmitted to the piston loading hole 111 of the assembly station 110 and a gripper 141 for gripping the expander 15a And a ring pressing means 145 for pressing the expander ring 15a to the ring groove 3a of the piston 1 when grasping the ring groove 15a.

The gripper 141 is installed in an upper region of the piston loading hole 111 and stands in a region above the piston loading hole 111. When the expander 15a is delivered to the piston loading hole 111, And grasping and expanding the expander 15a. At this time, the gripper 141 is provided in plural so that a plurality of areas of the inner circumferential surface of the expander 15a can be gripped and spaced apart at equal intervals.

When the piston 1 is received in the piston loading hole 111 in a state where the gripper 141 grasps and enlarges the expander 15a, the gripper 141 releases the expander 15a and rises to the standby position.

At this time, the outer surface of the gripper 141 preferably has a grip guiding surface 143 in the lower end region for smooth gripping and releasing of the expander 15a.

The ring pressing means 145 waits in the circumferential region of the expanded expander 15a in the peripheral region of the piston loading hole 111 so that the piston 1 is transmitted to the piston loading hole 111 and the gripper 141 is expanded The expander 15a is pressed toward the ring groove 3a of the piston 1 in the process of grasping the piston 15a. With this pushing action of the ring pressing means 145, the gripper 141 ascends and releases the expander 15a, and the expander 15a presses the ring pressing means 145 And is correctly inserted into the ring groove 3a of the piston 1 by its own elastic restoring force.

The ring pressing means 145 may be provided in the circumferential region of the enlarged expander 15a at least one or a plurality of spaced apart intervals for the accuracy of assembly of the expander 15a.

A process of automatically assembling the expander 15a to the piston 1 using the expander oil ring assembler 601 having such a configuration will be described with reference to FIGS. 18 to 25. FIG.

The drive of the expander oil ring assembler 601 is started with the plurality of expanders 15a vertically stacked on the magazine 121. [

At this time, the lowermost expander 15a of the magazine 121 is in a state in which it does not come off the lower end of the ring diameter portion 124 by the magnetic force of the deviation preventive means 129 provided on the ring diameter portion 124 as a magnet . The open end of the expander ring 15a is spaced apart by the end stop ribs. The loading plate 131 of the ring loading unit 130 is standing at the ring receiving position and the piston loading hole 111 of the mounting station 110 stands by in the empty space.

When the driving of the expander oil ring assembler 601 is started, the pressing unit 128 of the ring pressing portion 126 is driven so that the pressing member 127 descends at a falling width corresponding to the thickness of one of the expanders 15a And presses the expanders 15a loaded on the magazine 121 downward.

19, the expander 15a, which is in a state of being pivoted at the lowermost end of the ring diameter portion 124 of the magazine 121, falls and is loaded on the loading plate 131. [ At this time, the spacing holding pieces 135 of the loading plate 131 are interposed between both ends of the opening side of the expander 15a dropped on the loading plate 131 as described above, Are stacked on the loading plate 131 without overlapping. Also, the expander 15a is loaded on the loading plate 131 while being accurately leveled by the magnetic force of the mounting magnet 137 provided on the loading plate 131, and is not arbitrarily released.

When the expander 15a is loaded on the loading plate 131, the loading plate 131 is loaded on the assembly station 110 side by driving the plate driver 133 of the ring loading unit 130, Position to place the expander ring 15a in the piston loading hole 111. [

When the expander 15a is transferred to the piston loading hole 111 of the assembly station 110 as shown in Fig. 21, the gripper 141 descends to enlarge while grasping the expander 15a, 131 return to the area below the magazine 121, which is the ring reception position, as shown in Fig. At this time, the expander 15a to be expanded is positioned by the positioning guide means 113 in a position corresponding to a predetermined position, that is, adjacent to the outer periphery of the ring groove 3a of the piston 1 accommodated in the piston loading hole 111 Position.

The piston 1 is supplied and received in the piston loading hole 111 by the piston transfer means 542 as shown in FIG. 23 in a state where the gripper 141 grasps the expander ring 15a. At this time, the ring groove 3a of the piston 1 is located at the correct position by the positioning guide means 113 so as to be exactly adjacent to the inner circumference of the waiting expander 15a.

When the piston 1 is received in the piston loading hole 111, the gripper 141 ascends to the upper region of the piston loading hole 111 while releasing the gripping state of the expander 15a as shown in FIG. 24, The pressing means 145 presses the expander 15a toward the ring groove 3a.

The expander 15a can be accurately positioned in the ring groove 3a of the piston 1 by the elastic resilience of the expander 15a and the pushing action of the ring pressing means 145 and the guide structure of the positioning guide means 113 Assembled.

The piston 1 having completed the assembling of the expander 15a is loaded on the tray 542 by driving the piston 540 to be discharged from the piston loading hole 111 of the assembly station 110 And moves to the first side ring assembler 831 side.

Such an assembling process of the expander type expander 15a is automatically and repeatedly carried out continuously, so that the expander 15a can be automatically assembled to the piston 1 quickly and accurately.

In particular, the expander oiling assemblies 601 are designed to have the structural characteristics of the expander 15a by the structure of the lower region of the magazine 121 of the ring supply unit 120 and the structure of the loading plate 131 of the ring loading unit 130 It is possible to accurately assemble the expander-type expander ring 15a to the corresponding ring groove 3a of the piston 1 while completely preventing the opposite ends of the open end from being engaged with each other.

On the other hand, the general ring assembler 301 includes the first side ring assembler 831, the second side ring assembler 832, the second ring assembler 801, 1 top ring assembler 810, a second top ring assembler 820 and these general ring assemblers 301 are almost identical in construction. Hereinafter, the first side ring 15b, the second side ring 15b, the second ring 17, the first top ring 19 and the second top ring 19 are referred to as a 'general ring 10' Collectively.

26 to 35, the general ring assembler 301 also includes an assembling station 310 for forming an area for assembling the general ring 10 'to the piston 1, A ring feeding unit 320 for feeding the ring 10 'one by one to the ring loading unit 330 which will be described later, and a general ring 10' And a general ring 10 'moved to the assembly station 310 by the ring loading unit 330 to the corresponding ring grooves 3a, 3b of the piston 1 , 3c (except 3c in the case of GDi oil ring)).

The assembling station 310 is provided with a piston loading degree enough to allow the outer circumferential surface of the piston 1 to be smoothly accommodated as an assembly space for assembling the general ring 10 'to the corresponding ring grooves 3a, 3b, 3c of the piston 1 A hole 311 is formed.

The piston 1 is loaded on the tray 542 of the piston feeder 540 in the piston feeder 510 and automatically loaded into the piston loading hole 311 of the assembly station 310, And can be unloaded from the piston loading hole 311 after assembly. At this time, before the piston 1 is loaded, the ring loading unit 330 preliminarily loads the general ring 10 'in the piston loading hole 311 and waits in a state that the general ring 10' is pushed by the gripper 341 to be described later.

The assembling station 310 is also provided with a position setting mechanism for guiding the position of the general ring 10 'which is enlarged and reduced by the gripper 341 to a position corresponding to the corresponding ring groove 3a, 3b, 3c of the piston 1 A guide means 313 is provided.

The position setting guide means 313 accurately positions the enlarged position of the general ring 10 'around the ring grooves 3a, 3b and 3c of the piston 1 and at the same time, 3b and 3c of the piston 1 in the process of assembling the general ring 10 'into the ring grooves 3a, 3b and 3c of the piston 1 by the guide unit 345, ') Are correctly assembled.

The ring supply unit 320 has a magazine 321 for vertically stacking a plurality of general rings 10 '.

The magazine 321 has a stacking portion 322 on which the general rings 10 'are stacked and a stacking portion 322 which is coupled to the upper end of the stacking portion 322 to allow the plain ring 10' to be smoothly stacked on the stacking portion 322 And has an induction portion 323.

The stacking portion 322 is vertically arranged such that a plurality of circular bars are spaced apart from each other in the circumferential direction in contact with the outer peripheral surface of the general ring 10 '. Upper and lower ends of the loading portion 322 are coupled to the loading guide portion 323 and the lower guide cap 324. At this time, the inner circumferential surfaces of the loading guide portion 323 and the lower guide cap 324 coincide with the imaginary circular inner circumferential surface formed by the circular bar of the loading portion 322. Of course, the loading portion 322 may be provided in various forms such as a single cylindrical member or the like rather than a plurality of circular bars.

It is preferable that the load inducing portion 323 is coupled to the upper end of the loading portion 322 and has an inner circumferential downward diametric structure whose inner circumferential surface of the upper region is reduced to be coincident with the inner circumferential surface of the loading portion 322 toward the lower end. This is to allow the plain ring 10 'to be loaded smoothly into the loading part 322.

The lower guide cap 324 is coupled to the lower end of the loading portion 322 and the lower end region is close to the upper surface of the loading plate 331 at the ring receiving position of the loading plate 331 to be described later. When the loading plate 331 of the general ring 10 'positioned at the lowermost end of the lower guide cap 324 is dropped onto the loading plate 331 when the loading plate 331 is positioned at the ring receiving position and the dropped general ring 10' The general ring 10 'positioned at the lowermost end of the lower guide cap 324 can not fall due to the structure of the upper surface of the rear region of the loading plate 331 when it is moved to the loading position by the plate 331, .

The ring loading unit 330 includes a loading plate 331 for receiving the general ring 10 'falling from the magazine 321 and moving to the assembly station 310, a plate driver 331 for driving the loading plate 331, (333).

The loading plate 331 is reciprocally movable between a ring receiving position adjacent to the lower end of the lower guide cap 324 of the magazine 321 and a loading position located in the piston loading hole 311 of the assembly station 310 .

The upper surface of the loading plate 331 is provided with a ring receiving surface 335 for receiving the general ring 10 'falling from the magazine 321 of the ring supply unit 320, A ring atmosphere holding surface 314 is formed at the rear of the ring receiving surface 335 to prevent falling of the general ring 10 'waiting at the lowermost end of the magazine 321 when the ring 10' (336). The ring atmosphere holding surface 336 is stepped at a higher position than the ring receiving surface 335 of the general ring 10 'and the upper surface thereof is in contact with the magazine 321 The adjacent spacing between the ring atmosphere holding surface 336 and the lower end of the lower guide cap 324 of the magazine 321 is equal to the height of the general ring 10 ' The general ring 10 'waiting at the lower end of the lower guide cap 324 of the magazine 321 does not fall down arbitrarily.

Also, it is preferable that the loading plate 331 is provided with an attaching magnet 337 in a region where at least the general ring 10 'is in contact. This prevents the general ring 10 'falling from the magazine 321 from being horizontally held and separated from the outside of the loading plate 331, and at the same time, when the ordinary ring 10' is dropped from the magazine 321, So that a gravitational force can be applied to the slider 331 so as to fall to a predetermined position.

The plate driver 333 may be provided with various types of linear reciprocating actuators including hydraulic or pneumatic cylinders. The plate driver 333 moves the loading plate 331 to the loading position of the piston loading hole 311 of the assembly station 310 when the general ring 10 'is loaded on the loading plate 331, When the general ring 10 'is grasped by the gripper 341 to be described later in the loading hole 311, the loading plate 331 is returned to the ring receiving position.

The ring assembly unit 340 includes a gripper 341 for gripping and gripping the general ring 10 'transferred to the piston loading hole 311 of the assembly station 310, And a ring guide unit 345 for correctly guiding the general ring 10 'to the ring grooves 3a, 3b and 3c of the piston 1 when grasping the ring 10'.

The gripper 341 is installed in an upper region of the piston loading hole 311 so as to be able to move up and down in the upper region of the piston loading hole 311. When the general ring 10 'is transferred to the piston loading hole 311, So as to grasp and enlarge the general ring 10 '. At this time, the grippers 341 are provided in plural so that a plurality of areas of the inner circumferential surface of the general ring 10 'can be grasped and spaced at equal intervals.

When the piston 1 is received in the piston loading hole 311 with the gripper 341 gripping and enlarging the general ring 10 ', the gripper 341 releases the general ring 10' and then rises to the standby position. The outer surface of the gripper 341 preferably has a grip guide surface 343 in the lower end region for smooth grasp and release of the general ring 10 '.

The ring guide units 345 are provided in a plurality of circumferential areas of the general ring 10 'at regular intervals and are reciprocated in the direction opposite to the direction of guiding the general ring 10' to the ring grooves 3a, 3b and 3c And a guide piece driver 347 for reciprocally driving the guide piece 346. [

The guide pieces 346 are waiting in the outer circumferential region of the general ring 10 'that is expanded in the piston loading hole 311 of the assembly station 310 and the piston 1 is transmitted to the piston loading hole 311, Is moved to a position for guiding the general ring 10 'to the ring grooves 3a, 3b and 3c of the piston 1 by driving the guide piece driver 347 in the course of releasing the general ring 10' . Then, the general ring 10 'released from the gripper 341 is resiliently reduced in diameter and assembled accurately and stably to the ring grooves 3a, 3b, and 3c of the piston 1.

The guide piece driver 347 may be provided with various types of linear reciprocating actuators including a hydraulic or pneumatic cylinder within a range in which the guide piece 346 can reciprocate.

The ring guide unit 345 may be provided at least one or at a plurality of circumferential areas of the generalized ring 10 ', which are diametrically opposed to each other, for the accuracy of assembly of the general ring 10'.

A process of automatically assembling the general ring to the ring grooves 3a, 3b, 3c of the piston 1 using the general ring assembler 301 having such a configuration will be described with reference to Figs. 28 to 35. Fig.

The driving of the general ring assembler 301 is started in a state in which a plurality of general rings are stacked vertically on the magazine 321.

When the drive of the general ring assembler 301 is started, the loading plate 331 of the ring loading unit 330 is moved to a position such that the ring receiving surface 335 waits at the ring receiving position under the magazine 321, The general ring at the lowermost part of the magazine 321 drops onto the ring receiving surface 335 of the loading plate 331 as shown in Fig. At this time, due to the magnetic force of the attachment magnet 337 provided on the loading plate 331, the general ring is loaded on the loading plate 331 while being accurately leveled, and is not arbitrarily released. And the piston loading hole 311 of the assembly station 310 waits in an empty space.

30, the loading plate 331 is moved by the driving of the plate driver 333 of the ring loading unit 330 to the assembling station 310 (see FIG. 30) To the loading position on the piston loading hole 311 to position the general ring in the piston loading hole 311. At this time, since the ring atmosphere holding surface 336 formed at the rear of the loading plate 331 is located adjacent to the lower end of the magazine 321, the ordinary ring waiting at the lower end of the magazine 321 does not fall down arbitrarily. When the loading plate 331 of the next general ring waiting at the lower end of the magazine 321 returns to the original position, the weight falls to the ring receiving surface 335 by its own weight.

When the general ring is transmitted to the piston loading hole 311 of the assembly station 310, as shown in FIG. 31, the gripper 341 descends to grasp the inner circumferential surface of the general ring to enlarge the general ring.

32, the loading plate 331 returns to the ring receiving position such that the ring receiving surface 335 is adjacent to the lower end of the magazine 321, as shown in Fig.

The general ring which is diametrically moved by the gripper 341 is moved by the positioning guide means 313 and the ring guide means 345 to a predetermined position in the ring groove of the piston 1 accommodated in the piston loading hole 311 3a, 3b, 3c) located at the corresponding positions adjacent to the outer periphery.

The piston 1 loaded in the tray 542 by the driving of the piston transfer device 540 is supplied to the inside of the piston loading hole 311 in the state in which the gripper 341 grasps the general ring, do. At this time, the ring grooves 3a, 3b, 3c of the piston 1 are correctly positioned by the positioning guide means 313 to be precisely positioned, so that they are precisely adjacent to the inner circumference of the waiting ring.

When the piston 1 is received in the piston loading hole 311, the gripper 341 ascends to the upper region of the piston loading hole 311 while releasing the holding state of the general ring as shown in FIG. 34, The ring gear unit 313 and the ring guide unit 345 guide the general ring toward the ring grooves 3a, 3b and 3c.

At this time, the guide piece 346 accurately guides the general ring 10 'to the ring grooves 3a, 3b, 3c of the piston 1 by driving the guide piece driver 347 . As a result, the general ring is accurately assembled to the ring grooves 3a, 3b, 3c of the piston 1.

The piston 1 having been assembled with the general ring is discharged from the piston loading hole 311 of the assembly station 310 while the piston is loaded on the tray 542 by driving of the air supply unit 540 And then to the next general ring assembler 301 or piston ejector 530.

Such a general ring assembly process is performed automatically and repeatedly, so that the general ring can be automatically assembled to the piston 1 quickly and accurately.

3, the piston discharger 530 includes a discharge conveyor 531 for receiving the piston 1 assembled with the piston ring 10 from the piston ring assembler 520 and loading the same in the discharge direction, And post-assembly inspection means 537 for inspecting whether or not the piston ring 10 of the piston 1 moving from the piston transfer device 540 toward the discharge conveyor 531 is defective.

The discharge conveyor 531 transports the pistons 1, on which the piston rings 10 continuously transferred from the piston ring assembler 520 are assembled, on the conveyor in at least one row in the discharge direction. At this time, it is preferable to provide the contact preventing means 533 on the conveyor so that the loaded pistons 1 do not contact each other. The contact preventing means 533 is the same as that provided in the supply conveyor 511 of the piston feeder 510 described above.

The arrangements for transferring the pistons 1 on the discharge conveyor 531 may also be a plurality of stacked transfer forms such as a two-row stacked form in addition to the one-row arrangement. The pistons 1 may be stacked on a conveyor in a multi- On the inflow side of the piston 1 of the discharge conveyor 531 from the piston ring assembler 520 toward the discharge conveyor 531, the pistons 1 from the tray 542 of the piston transporter 540, It is preferable to provide the piston discharge guide means 535 for guiding to move alternately to the respective rows on the piston 531.

On the other hand, the post-assembly inspecting means 537 assembles the piston rings 10 to the piston 1 loaded on the tray 542 of the piston transporter 540 facing the discharge conveyor 531 from the piston ring assembler 520 (Not shown) for photographing the state of the piston ring 10, and an assembled state image of the piston ring 10 photographed by a vision camera (not shown) (Not shown) for reading the presence or absence of an assembling defect of the assembly.

When the post-assembly inspection means 537 reads the failure of the piston ring assembly, an alarm sound is generated to inform the manager of the failure condition of the piston ring assembly.

Here, the image in the good condition is a state in which the piston 1 is photographed in a state in which the piston ring 10 is normally assembled by the type of the piston 1, and the data is stored in advance in the controller. It is possible to compare the image of this good article with the image of the piston 1 directed to the piston ejector 530 from the piston ring assembler 520 to read out the assembly error of the piston ring 10.

3 and 4, the piston transporter 540 includes a tray unit 530 for moving the piston 1 from the piston feeder 510 side through the piston ring assembler 520 to the piston ejector 530 side, A piston pickup unit 547 for moving the piston 1 from a supply conveyor 511 of the piston feeder 510 to a tray 542 of a tray unit 541 to be described later, And a piston pickup releasing unit 548 for moving the assembled piston 1 from the tray 542 to the discharge conveyor 531 of the piston ejector 530. [

The tray unit 541 is provided in the lower area of the assembly station 110, 210, 310 of each piston ring assembler 520 and includes a tray 542 on which the pistons 1 are loaded one by one, A tray supporting portion 543 which supports the tray supporting portion 543 so as to be able to move up and down to a position to be loaded in the piston loading holes 111, 211 and 311 of the assembly stations 110, 210 and 310 while being reciprocated in the arrangement direction of the tray supporting portions 54, And a tray elevator 546 for raising and lowering the tray reciprocating device 545 and the tray 542.

The tray 542 is provided in a plurality of larger than the number of the piston ring assemblies 520 and is provided so as to be able to be lifted and lowered on the tray support 543 in a direction corresponding to the arrangement direction of the piston ring assembler 520. Preferably, the spacing of these trays 542 corresponds to the spacing of the piston ring assemblies 520 or has a 1/2 spacing with respect to the spacing of the piston ring assemblies 520.

These trays 542 move the loaded piston 1 downward into the piston loading holes 111, 211 and 311 of the piston ring assembler 520 and then return to the previous position in the empty tray 542 state, The piston 1 is lifted and loaded into the piston loading holes 111, 211, and 311 under the piston loading holes 111, 211, and 311 of the previous piston ring assembler 520.

For example, the above-described piston ring assembler 520 may be used in combination with the expander assembly 101, the first side ring assembler 831, the second side ring assembler 832, the second ring assembler 801, the top ring assembler 800, The tray 542 is provided with at least six trays 542 arranged in a line below the piston assemblies to reciprocate both sides in the arranging direction by the intervals of the trays 542. [

The tray 542 located at one end of the array of the six trays 542 corresponds to the position where the piston 1 is fed from the piston feeder 510 and the assembly station 110 of the expander assembler 101 And the tray 542 located at the other end of the array of the six trays 542 is moved to the position corresponding to the assembly station 310 of the top ring assembler 800 and to the piston ejector 530 And reciprocates to a position for discharging the piston (1). The remaining four trays 542 are reciprocated to positions corresponding to the assembly stations 110, 210, and 310 of the adjacent two piston assemblies, respectively.

Although the number of the trays 542 is described as one more than the number of the piston ring assemblies 520, the number of the trays 542 may be two or more than the number of the piston ring assemblers 520 It is also possible. For example, the intervals of the trays 542 relative to the intervals of the piston ring assemblies 520 and the like are set to 1/2 to provide a sufficient time to cope with defective and abnormal operations occurring during the supply, 2, the number of the trays 542 is set to a number that at least includes the number of the piston assemblies multiplied by 2 and one tray 542 considering the reciprocal movement of both end trays in the number. In the piston ring assembly system 501 according to the present invention, the number of the piston ring assemblies 520 is preferably 7, and the number of the trays 542 is preferably at least 7 x 2 + 1 = 15 or more.

The tray support 543 repeatedly reciprocates in the tray 542 and the arrangement of the piston ring assemblies 520 in correspondence with the spacing of the trays 542 while supporting the tray 542 in a rotatable manner as described above, (542) reciprocally by the distance corresponding to their spacing distance.

 The tray reciprocating machine 545 reciprocates the tray supporting portion 543 in the tray 542 and the piston ring assembler 520 in the arrangement direction by using an oil, pneumatic cylinder,

Then, the tray 542 is repeatedly lifted and lowered using a configuration such as a tray elevator 546, a pneumatic cylinder, or a reverse stepper motor and gears.

The piston pick-up unit 547 is mounted on the feed conveyor 511 of the piston feeder 510 and moves the piston 1 moved to the final end of the feed conveyor 511 adjacent to the piston feeder 540, To the tray 542 of the tray 540. The piston pick-up unit 547 is preferably provided to move the piston 1 to the tray 542 in such a manner as to press the piston 1 toward the tray 542. Of course, the piston pick-up unit 547 may take various forms such as gripping the piston 1 and moving it to the tray 542. However, considering the simplification of the structure and the breakage due to the fall of the piston 1, It is most preferable that the piston 54 presses the piston 1 and moves it to the tray 542.

When the piston 1 with the piston ring 10 assembled via the piston ring assembler 520 is moved adjacent to the piston ejector 530 side similarly to the piston pickup unit 547, It is preferable that the piston 1 is pressed and moved to the discharge conveyor 531 of the piston discharger 530.

A process of automatically assembling the piston ring 10 to the piston 1 using the piston ring assembling system 501 according to the present invention having such a configuration will be described with reference to FIG. 3 to FIG.

Here, the piston ring assembler 520 includes the GDi oiling assemblies 201, the expander assemblies 101, the first side ring assemblies 831, the second side ring assemblies 832, A first top ring assembling unit 801, a first top ring assembling unit 810 and a second top ring assembling unit 820 are sequentially arranged.

At this time, when the kind of the piston 1 is the kind in which the GDi oil ring is to be assembled and is the piston 1 used in the lead-free engine, the expander assembly 101, the first side ring assembler 831, The assembler 832 and the second top ring assembler 820 are not driven.

On the other hand, if the kind of piston 1 is the kind in which the expander type oil ring 15 is to be assembled and is the piston 1 used in the lead-free engine, the GDi oiling assemblies 201 and the second top ring assemblies 820, Is not driven.

Further, when the kind of the piston 1 is the kind used in the smoothing engine, the first top ring assembler 810 is not driven.

The driving selection of the piston ring assemblers 520 according to the kind of the piston 1 can be selected by a controller not shown.

When the driving of the piston ring assembling system 501 is started, the pistons 1 loaded on the feed conveyor 511 of the piston feeder 510 are moved to the end of the feed conveyor 511, And is moved to the tray 542 which is adjacent to the waiting by the driving.

When the piston 1 is loaded on the tray 542, the tray 542 is driven by the tray unit 541 to move to the GDi oiling assemblies 201 side. At this time, the pre-assembly inspection means 517 is disposed in the area between the final end region of the supply conveyor 511 and the GDi oiling assembly 201 to check whether the appearance or the type of the piston 1 is abnormal. The spacing between the tray 542 locations adjacent the final end region of the feed conveyor 511 and the pre-assembly inspection means 517 may be the spacing of the trays 542 or the spacing of the trays 542.

The tray 542 on which the piston 1 is loaded moves the piston 1 to the lower region of the pre-assembly inspection means 517 and then moves to the empty tray 542 to a position adjacent to the final end region of the feed conveyor 511 So that it can be delivered to the next piston (1). At this time, the next empty tray 542 is waiting on the lower side of the pre-assembly inspection means 517, and then the piston 1 is loaded on the pre-assembly inspection means 517 while rising.

When the inspection of the presence or absence of the piston 1 loaded on the pre-assembly inspection means 517 is completed and the product is read as a good product, the tray 542 descends to the state in which the piston 1 is loaded and then the next GDi oiling assemblies 201 The piston 1 is moved to the lower side of the assembly station 210 of FIG. At this time, the next piston 1 is loaded from the piston feeder 510 to the previous tray 542, and moves to the lower side of the pre-assembly inspection means 517 as described above. The process of moving the piston 1 from the piston feeder 510 to the pre-assembly inspection means 517 and the GDi oiling granulator 201 repeats the above-described process. The pistons 1 are continuously moved from the piston feeder 510 to the piston ring assembler 520 through the pre-assembly inspection means 517 in accordance with the repetition of the reciprocating movement of the tray 542 and the ascending and descending operations.

The piston 1 moved to the lower side of the assembly station 210 of the GDi oiling assembly 201 is loaded into the piston loading hole 211 of the assembly station 210 during the lifting action of the tray 542, And is unloaded below the piston loading hole 211 of the assembly station 210 when the tray 542 is lowered.

When the piston 1 is loaded into the piston loading hole 211 of the assembly station 210 when the GDi oiling assemblies 201 are driven, the piston 1 is driven by the driving of the GDi oiling assemblies 201 as described above The GDi oil ring 15 is assembled to the lower ring groove 3c of the lower ring groove 3c.

On the other hand, when the GDi oiling assembly 201 is not driven, the piston 1 is loaded into the piston loading hole 211 of the assembly station 210, The GDi oil ring 15 is not assembled to the lower ring groove 3c of the housing 1.

On the other hand, the piston 1 located on the GDi oil ring assembler 201 side moves to the lower side of the assembling station 110 of the expander assembler 101 by the reciprocating movement of the tray 542 and the ascending / At this time, the next piston 1 is waiting for movement on the lower side of the assembly station 110 of the GDi oiling assembly 201, and the next piston 1 is waiting for movement on the lower side of the pre-assembly inspection means 517.

The piston 1 moved to the lower side of the assembling station 110 of the expander assembler 101 is loaded into the piston loading hole 111 of the assembling station 110 during the lifting action of the tray 542, And is unloaded to the lower part of the piston loading hole 111 of the assembly station 110 in the lowering operation.

At this time, when the GDi oiling assemblies 201 are driven, the expander assemblies 101 are not driven. If the GDi oiling assemblies 201 are not driven and the drive of the expander assemblies 101 is selected, The expander 15a is assembled to the lower ring groove 3c of the piston 1 loaded in the assembling station 110 of the expander assembler 101 by driving the expander assembler 101 as described above.

The piston 1 unloaded from the assembling station 110 of the expander assembler 101 sequentially moves the first side ring assembler 831 and the second side ring assembler 832 and the first top ring assembler 810, 210 and 310 of the piston ring assembler 520 by the reciprocating movement of the tray 542 and lifting and lowering operation of the piston ring 10 through the second top ring assembler 820, After being assembled, it is unloaded.

At this time, the first and second top ring assemblies 810 and 820 are selectively driven as described above and the other is not driven.

The assembling process of the first side ring 15b and the second side ring 15b and the first top ring 19 and the second top ring 19 is the same as the assembling process of the piston ring 10 of the general ring assembler 301 See also.

On the other hand, the piston 1 assembled with the piston ring 10 in the piston ring assembler 520 is rotated by the reciprocating and lifting action of the tray 542 as described above to rotate the second top ring assembler 820 and the piston ejector 530, Assembling inspection means 537 arranged between the piston 514 and the piston 535, and is loaded and inspected for the presence of the piston ring assembly failure. At this time, if it is read as bad, it is possible to inform the manager by way of a warning sound or the like to remove the defective product.

The piston 1 of the good product in which the piston ring 10 is normally assembled moves to the region adjacent to the discharge conveyor 531 of the piston discharger 530 and is discharged to the discharge conveyor 531 by the piston pickup releasing unit 548 .

The pistons 1 are automatically moved from the piston feeder 510 to the piston ejector 530 through the piston ring assembler 520 and the corresponding ring grooves 3a, 3b of the piston 1 in the piston ring assembler 520, 3b and 3c, the piston ring 10 is automatically and quickly assembled. As a result, productivity is significantly increased.

Further, in addition to the manager who manages the piston ring assembling system 501 as a whole, the attraction force for assembling the respective piston rings is not considered, and the labor cost can be remarkably reduced.

Particularly, depending on the type of piston 1 applied to various types of engines, the corresponding piston ring 10 can be automatically assembled.

As described above, according to the present invention, there is provided a piston ring assembling system capable of assembling a piston ring to a piston quickly and accurately automatically, thereby remarkably increasing productivity and reducing labor costs.

In addition, a piston ring assembling system capable of automatically assembling a corresponding piston ring in accordance with the type of piston applied to various types of engines is provided.

1: Piston 3: Ring groove
10: Piston ring 15: Oil ring
110, 210, 310: Assembly station 120, 220, 320:
121, 221, 321: magazine 130, 230, 330: ring loading unit
140, 240, 340: ring assembly unit 510: piston feeder
520: Piston ring assembler 530: Piston ejector
540: piston blower

Claims (20)

In a piston ring assembly system,
A piston feeder for feeding the piston;
An assembly station in which the piston supplied from the piston feeder is loaded and unloaded, a ring supply unit for dropping the piston rings one by one while loading the piston rings, and a ring loading unit for receiving the piston ring dropped from the ring supply unit, At least one piston ring assembly having a unit, a ring assembly unit for assembling the piston ring loaded in the assembly station into the ring groove of the piston;
A piston discharger for discharging the assembled piston from the piston ring in the piston ring assembler;
A piston for moving the piston from the piston feeder through the piston ring assembler to the piston ejector while loading the piston into the assembly station when the piston ring is loaded and a piston for unloading the assembled piston from the piston ring, Air flow;
Wherein the piston ring assembly system comprises: The method according to claim 1,
Wherein the ring supply unit includes a magazine for vertically loading the plurality of piston rings;
Wherein the ring loading unit has a loading plate reciprocating between a ring receiving position adjacent to a lower portion of the magazine and a loading position moved to the assembly station, and a plate driver reciprocating the loading plate. system. 3. The method of claim 2,
The ring assembly unit
A gripper for grasping the piston ring in the assembling station to make the piston ring clear or to grasp the gripped piston ring,
Ring pressing means for pressing the corresponding ring groove of the piston when the gripper releases the piston ring,
And positioning guide means for guiding the position of the enlarged and reduced diameter piston ring to a position corresponding to the corresponding ring groove. The method of claim 3,
Wherein the piston feeder has a feed conveyor for continuously feeding the piston to the feeder of the piston and pre-assembly checking means for checking the presence or absence of a defect of the piston from the feed conveyor to the feeder of the piston;
Wherein the piston discharger includes a discharge conveyor for discharging the piston having the piston ring assembled from the piston ring assembler to the piston and discharging the piston from the piston to the discharge conveyor for assembling the piston ring of the piston facing the discharge conveyor, And a post-inspection means. 5. The method according to any one of claims 1 to 4,
Wherein the piston ring pellet assembly includes an oil ring assembly for assembling an oil ring of the piston ring to the piston, a second ring pellet assembly for assembling the second ring of the piston ring to the piston, And a top ring assembly. 6. The method of claim 5,
Wherein the piston ring assembler is disposed in the order of the oil ring assembler, the second ring assembler, and the top ring assembler from the piston feeder side toward the piston emitter side. The method according to claim 6,
Wherein said oil ring assemblies are provided with a plurality of selectively driveable pistons. 8. The method of claim 7,
The oil ring assembler comprises
An expander oiling assembly for assembling a pair of side rings and an expander interposed between the both side rings to a corresponding ring groove of the piston;
A GDi oil ring assembly for assembling an oil ring for a gasoline direct injection (GDi) engine piston having an outer ring and an inner ring received in an inner peripheral groove of the outer ring, into an associated ring groove of the piston;
Is selectively provided to be able to be driven. 9. The method of claim 8,
The expander oil ring assembler
An expander assembly for assembling the expander to a corresponding ring groove of the piston,
And a pair of side ring assemblies for assembling the both side rings at the upper and lower portions of the expander, respectively. 10. The method of claim 9,
The ring supply unit of the expander assembler
The expanders are loaded vertically in the magazine;
A ring pressing portion for dropping the expanders one by one into the magazine lower region,
And a release preventing means for preventing any fall of the expanders. 11. The method of claim 10,
The magazine
A stacking portion for stacking the expanders in a surrounding manner,
And a ring diameter portion provided at a lower portion of the loading portion in a gradually downwardly projected shape to guide the expander to fall in a state of being enlarged. 12. The method of claim 11,
And an end portion spaced-apart retaining rib is formed in a vertical direction on one side of the magazine to maintain the open end of the expander in a spaced-apart relationship. 13. The method of claim 12,
Wherein the release preventing means is a magnet provided on the ring-shaped portion. 14. The method of claim 13,
Wherein the ring loading unit of the expander assembler has a spacing holding piece corresponding to the end spaced-apart glass rib of the magazine at the ring receiving position on the loading plate. 15. The method of claim 14,
Wherein at least an area of the loading plate in contact with the expander ring is provided with an attaching magnet for preventing the expanding ring from being horizontally held and released. 9. The method of claim 8,
The ring assembly unit of the GDi oil ring assembler
The gripper grips and enlarges the oil ring while pressing the inner ring inwardly toward the inner circumferential groove of the outer ring, or disengages the oil ring when the piston is loaded on the assembly station;
And the ring pressing means presses the outer ring toward the corresponding ring groove side of the piston when the gripper releases the oil ring. 17. The method of claim 16,
Wherein the plurality of grippers are formed at a predetermined interval along the circumferential direction of the oil ring, wherein a gap between the grippers is smaller than a contact area of the grippers with the inner ring;
Wherein an area where each gripper is in contact with the inner ring is an area in the range of 60 to 180 degrees in a circumferential direction when viewed from a plane. 17. The method of claim 16,
The ring pressing means
A plurality of pressing pieces provided at a predetermined interval in a peripheral region of the oil ring and reciprocating in a direction opposite to a direction in which the outer ring is pressed toward the ring groove side;
And a pressing piece driver for reciprocally driving the pressing piece at least once. 19. The method of claim 18,
The positioning guide means provided in the ring assembly unit of the GDi oil ring assembler
A guide block having a V groove side end face having a valley corresponding to a peripheral region of a ring groove of the piston loaded on the assembly station and a V groove flat face corresponding to a part of the circumference of the oil ring,
And a guide spring elastically pressing the guide block toward the ring groove side of the piston. The method according to claim 6,
Wherein at least one of the second ring assembler and the top ring assembler is provided with a plurality of selectively driveable pistons.

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