JPS63218097A - Method and device for injecting engine oil - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an engine oil injection method and apparatus;
More specifically, on an engine assembly line, a leak test of an oil flow passage formed in the engine;
By automatically and continuously performing the oil injection process for supplying oil into the engine with a single device, assembly and inspection of the engine can be efficiently carried out all at once.
Furthermore, the present invention relates to an engine oil injection method and apparatus that enable automation of the entire assembly line.

[Prior Art] Generally, in the automobile industry, line production processes are widely adopted in order to achieve mass production and work efficiency. In this case, for example, an engine assembly line is known as the line production process.

That is, on the engine assembly line, the engines that are transported along the line via a transport device are sequentially positioned at predetermined stations, various parts are assembled automatically or manually by workers, and the engines are assembled on the line. Engine assembly work is performed by intervening various inspection processes during the process.

By the way, the inspection process includes a leak test of the oil flow path, which is performed before injecting engine oil into the engine. The leak test essentially involves supplying compressed air into the oil flow path of the engine and checking whether air within a standard range flows into the combustion chamber from between the piston and the inner peripheral surface of the cylinder. be. If the amount of air introduced into the combustion chamber is outside the standard range, the engine is determined to be defective, while if the amount of air introduced is within the standard range, the engine is considered to be good and the engine oil is injected. After that, it is transported to the next station.

Therefore, the leak test and oil injection work that have been conventionally performed will be specifically illustrated below.

In FIG. 1, reference numeral 2 indicates an engine that is transported through each station on the assembly line. In this case, an oil inlet 4 is provided at the top of the engine 2.
This oil inlet 4 communicates with an oil flow passage 5 within the engine 2. Further, an oil level vibro and a pleather pipe 8 are formed in the engine 2 so as to protrude outward, respectively, and the oil level vibro and breather pipe 8 communicate with the oil flow passage 5 similarly to the oil inlet 4. There is.

Therefore, when injecting oil into the engine 2, first, the oil inlet 4 and breather pipe 8 are closed with sealing jigs S1 and S2, and the nozzle N is inserted into the oil level vibro. Next, when compressed air is supplied from a compressed air supply source (not shown) connected to the nozzle N1 to the oil flow passage 5 in the engine 2, a portion of the compressed air is distributed to the piston 7 and the inner periphery of the cylinder where it comes into sliding contact. It passes through the combustion chamber through the gap with the surface 9 and is led out through a plug mounting hole (not shown). At this time, an air flow meter is connected between the compressed air supply source and the nozzle Nl, and the compressed air flowing out from between the piston 7 and the cylinder inner peripheral surface 9 via the air flow meter is connected to the compressed air supply source and the nozzle Nl. The amount of outflow is being detected.

If the outflow amount is outside the standard range, the engine 2
On the other hand, if the outflow amount is within the range, engine oil is injected into the engine 2.

That is, oil level vibro and oil inlet 4
Remove the nozzle N1 and seal jig S1 from the
A negative pressure nozzle N2 is inserted into the oil level vibro, and an injection nozzle N3 is disposed in the oil injection port 4.

Therefore, engine oil is injected into the engine 2 through the injection nozzle N3 while the vacuum generator connected to the negative pressure nozzle N2 is driven to suck the air inside the engine 2.

However, in the prior art described above, the leak test of the oil flow path 5 and the oil injection operation are performed independently. That is, as mentioned above, when performing a leak test, seal jigs S1 and S! are attached to the oil inlet 4 and the breather vibe 8. At the same time, a compressed fluid supply nozzle N is pushed through the oil level vibro.

Next, after the leak test is completed, remove the sealing jig S from the oil inlet 4 and push the injection nozzle N through it.Meanwhile, remove the nozzle N from the oil level vibro and apply negative pressure to the oil level vibro. Inserting nozzle N2 and injecting engine oil. For this reason, on the assembly line of the engine 2, many steps are required from the leak test of the oil flow path 5 to the end of the engine oil injection work, making it impossible to improve the efficiency of the entire assembly line. This shortcoming is pointed out.

Furthermore, in this case, even if the respective engines 2 are of the same type, the oil inlet 4, the oil level vibro, and the breather vibe 8 are not formed in exactly the same place, and moreover, even if the engines 2 are of the same type, In No. 2, the positions of the oil inlet 4, oil level vibro, and breather vibrator 8 are significantly different. Therefore, the sealing jigs S1 and S2 and the nozzle N mentioned above.

It is difficult to automate the installation and removal work of N to N, and the work is usually performed manually by an operator.

As a result, there arises a drawback that when the oil flow path leak test is shifted to the oil injection process, a considerable amount of time is required for setup work, and a considerable burden is imposed on the operator. Furthermore, since the setup work is dependent on the manual work of an operator, there is a problem that it is difficult to achieve automation and efficiency of the entire engine assembly line.

[Problems to be Solved by the Invention] The present invention has been made to overcome the above-mentioned disadvantages, and includes a first nozzle means that is switchably connected to a test fluid supply source and a vacuum generator. , a second nozzle means configured to be able to close an engine oil supply passage connected to an engine oil supply source, and a sealing jig for closing an opening, each of which is movably disposed to close the oil flow passage in the engine. The first and second nozzle means were engaged with the first and second openings communicating with the , the other opening was closed with a sealing jig, and the second opening was closed with the second nozzle means. In this state, compressed air is supplied into the engine from the first nozzle means to check for pressure leaks in the oil flow passage, and then, the first nozzle means is connected to a vacuum generator while sucking air inside the engine. By supplying engine oil from the second nozzle means, the engine leak test and the oil injection process can be performed automatically and consecutively in a single device, thereby minimizing the engine assembly work. It is an object of the present invention to provide an engine oil injection method and device that can be efficiently achieved.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides at least one first opening among a plurality of openings that communicate the oil flow passage formed inside the engine with the outside. the first nozzle means is inserted into the opening of the second nozzle means, the second nozzle means is inserted into at least one or more second openings, and the remaining openings are closed with a sealing member; A leak test is performed on the oil flow passage by supplying test fluid into the oil flow passage through the first nozzle means with the second opening closed, and further, the result of the leak test is within an acceptable range. If so, it is characterized in that oil is supplied into the oil flow passage from the second nozzle means while leading air in the oil flow passage to the outside through the first nozzle means.

Furthermore, the present invention provides a method for supplying engine oil into the oil flow path formed in the engine after performing a leak test of the oil flow path by supplying a testing fluid into the oil flow path formed in the engine. an injection device, the injection device comprising: a sealing means for closing an opening defined in the engine;
and a second nozzle means having a passage communicating with an oil supply source and configured to be able to freely open and close the passage, the sealing means and the first and second nozzle means being arranged in a predetermined direction with respect to the engine. It is characterized by being configured so that it can be displaced.

[Embodiments] Next, preferred embodiments of the engine oil injection method according to the present invention in relation to an apparatus for carrying out the method will be described in detail with reference to the accompanying drawings.

In FIG. 2, reference numeral 10 indicates an engine oil injection device according to the present invention. The injection device 10 constitutes a station on the engine assembly line, and performs a leak test on the oil flow path of the engine 2 transported via the transport device 12, as well as a
Automatically injects engine oil into the engine.

In this case, the injection device 10 supplies compressed air from the oil level vibro of the engine 2 to
A first nozzle mechanism 14 that conducts a pressure leak test inside the engine 2 and guides the air inside the engine 2 to the outside during oil injection, and a first nozzle mechanism 14 that engages with the oil level vibro of the engine 2 and passes through the first nozzle mechanism 14. A second nozzle mechanism 16 that closes this oil pipe level 6 when performing a leak test and further injects oil into the engine 2 via the oil level vibro, and a sealing jig that can freely close the breather pipe 8. mechanism 18.

The first nozzle mechanism 14 is displaceably mounted on the frame 20. Supports 22a and 22b constituting the frame 20 are erected on both sides of the transport device 12, and each support support 22a and 22b
A horizontal member 24 is bridged over the upper end of the frame.

As shown in FIG. 3, a pair of rails 26a and 26b are fixed to one side of the horizontal member 24 in a direction perpendicular to the transport direction of the engine 2 (arrow Y direction). A cylinder 28 is attached to one end of the rails 26a and 26b in parallel with each other. A piston rod 30 extends horizontally from the cylinder 28, and a movable table 32 constituting the first nozzle mechanism 14 is engaged with the piston rod 30.

The movable table 32 has a first plate 34a oriented in the vertical direction.
and a second plate body 34b extending horizontally from the lower end of the first plate body 34a, and guides 36a, 36 that engage with the respective rails 26a, 26b on the first plate body 34a.
b is fixed. On the other hand, a cylinder 38 is disposed vertically on the second plate 34b, and a support plate 42 is supported by a piston rod 40 extending vertically downward from the cylinder 38.

Furthermore, cylindrical bodies 44a and 44b are provided upright on both sides of the cylinder 38 on the second plate body 34b, and the cylindrical bodies 44a and 44b
The ends of the guide bars 46a and 46b that fit into the guide bars 46a and 46b are fixed to the support plate 42.

Mounted on the end of the support plate 42 with the Fi48 facing vertically downward.
The cylinder 50 is fixed to the mounting plate 48.

A cylindrical stopper 54 is engaged with the piston rod 52 extending horizontally from the cylinder 50, and a movable plate 56 is held at the tip thereof.

That is, a holding part 58 is provided upright on one side of the movable plate 56, the piston rod 52 is inserted through the holding part 58, and a nut 60 is screwed onto the tip of the piston rod 52. At that time, a coil spring 62 is interposed between the stopper 54 and the holding portion 58.

Further, a locking pin 64 is installed in the movable plate 56 at a position above the holding part 58, and protrusions 66a and 66 are bulged on the tip side of the movable plate 56 in the same direction as the holding part 58, respectively.
Form 6b. In this case, the protrusion 66a is inclined at a predetermined angle with respect to the vertical direction, and stopper poles 68a and 68b are screwed for a predetermined length into the protrusion 66a and the protrusion 66b extending in the vertical direction, respectively. Put it in.

Therefore, the arm member 72 is swingably attached to the movable jJi 56 via the support pin 7o, located between the respective protrusions 66a and 66b. As shown in FIG. 4, the arm member 72 has a substantially T-shape, and a balance portion 76 is formed at the end of a first rod 74 extending substantially horizontally. A second rod 78 extending in a direction perpendicular to the first rod 74 has large diameter holes 80a and 80b formed at both ends, respectively, and a pin is provided in the center of the second rod 78. member 84
Mating and engaging (.

Next, a housing 86 is movably disposed on the arm member 72. The casing 86 includes a rectangular planar portion 88 and side portions 90a and 90b extending in the longitudinal direction of the planar portion 88.
and a side surface portion 90c extending in the lateral direction of this plane portion 88.
, 90d. Both ends of guide bars 92a, 92b are penetratingly supported at predetermined positions of the side parts 90a, 90b, respectively, and the guide bars 92a, 92b are fitted into holes 80a, 80b of the arm member 72. Moreover, the side part 90a,
Short pin members 94a, 94b are fixed to the guide bars 90b at intermediate portions of the guide bars 92a, 92b, and coil springs 96a, 96b are installed between the pin members 94a, 94b and the pin member 84 of the arm member 72, respectively. Interpose.

A gripping means 98 is attached to a side surface 90d of the housing 86. The gripping means 98 includes a guide plate 100, and a V-groove 102 is formed at the tip of the guide plate 100. Further, a pair of claw members 104a and 104b are provided above the guide plate 100 and are moved toward and away from each other under the action of an actuator (not shown).
Grooves 106a and 106b are formed in opposing portions of the tips 4a and 104b, respectively.

On the other hand, a mounting plate 108 is fixed to the side surface portion 90c, and a locking pin 110 is planted on one side of the mounting plate 108,
A coil spring 112 is stretched between the locking pin 110 and the locking pin 64 provided on the movable plate 56. A cylinder 114 is attached to one end of the mounting plate 108, and a moving table 120 is engaged with a piston rod 116 extending vertically downward from the cylinder 114.

That is, the movable table 120 is disposed so as to be freely displaceable by engaging with a rail 122 fixed to a flat part 88 of the casing 86, and a piston rod 116 is attached to a horizontally bent flat plate part of the movable table 120. is fitted, and the nut 1 is inserted into a threaded portion (not shown) formed at the end of the piston rod 116.
Screw in 24.

Note that a cylindrical stopper 12 is attached to this piston rod 116.
5 is engaged, and a coil spring 126 is interposed between the stopper 125 and the moving table 120.

Further, a nozzle 128 is mounted on the movable table 120 in parallel with the piston rod 116 via a spherical bearing 127. As shown in FIGS. 10a and 10b, one end of a conduit 130 is connected to the nozzle 128, and the other end of this conduit 130 is connected to a switching valve 132.

Pipe lines 134a and 134b are connected to the switching valve 132, respectively, and the pipe line 134a communicates with a compressed air supply source 138 via an air flow meter 136. Meanwhile, a vacuum generator 140 is connected to the conduit 134b.

Next, the second nozzle mechanism 16 and the seal jig mechanism 18 will be explained in detail below.

That is, the second nozzle mechanism 16 and the seal jig mechanism 1
8 is attached to the frame 142. As shown in FIG. 2, supports 144a and 144b constituting the frame 142 are erected on both sides of the transport device 12 in the same manner as the above-mentioned supports 22a and 22b, and the upper ends of the supports 144a and 144b are A horizontal member 146 is bridged between.

A pair of parallel rails 1 are provided on one side of the horizontal member 146.
48a and 148b are fixed to the horizontal member 1.
A rack 150 is attached to the upper end of the rail 148a.

148b.

Therefore, the second nozzle mechanism 16 is movably mounted on the horizontal member 146.

As shown in FIG. 5, the second nozzle mechanism 16
Guide portions 156a and 156b that engage with the rails 148a and 148b are formed on a first plate 154 that includes the movable platform 152 and extends in the vertical direction. Further, a mounting plate 15B is fixed to the upper end of the first plate 154, and a motor 160 is installed on this mounting plate 158. A rotary drive shaft 1 extending vertically downward from this motor 160
A first gear 164 is pivotally attached to 62 , and this first gear 16
4 meshes with a second gear 166 having a larger diameter. Furthermore, a third gear 174 is engaged with a rotating shaft 168 that pivots the second gear 166, and this third gear 174 meshes with the rack 150.

One end of a second body 176 extending horizontally is fixed to the lower end of the first plate 154, and a pair of parallel rails 178a, 178 are spaced apart from each other by a predetermined distance from the second plate 176.
b is provided. Said rail 178a.

A screw shaft 180 is rotatably disposed between the screw shafts 178b, and a first pulley 182a is pivotally attached to an end of the screw shaft 180. In this case, a motor 184 is fixed to the second plate 176, and a second pulley 182b and the eleventh
A belt 185 is stretched between the belt 182a and the belt 182a.

A cylinder 187 is attached to the lower part of the second plate 176 via a mounting plate 186, and an oil receiving member 188 is engaged with a piston rod 187a of the cylinder 187. At that time, a guide bar 189 is attached to the oil receiving member 188.
The guide bar 189 is fitted into a cylindrical body 190 provided on the mounting plate 186.

Then, the slide base 191 is attached to the movable table 152. The slide base 191 has each rail 178
Guide parts 192a and 192b that engage with a and 178b
A nut member 194 is provided between the guide portions 192a and 192b into which the screw shaft 180 is screwed.

Further, a pair of parallel rails 195a and 195b are attached to the slide base 191 in a vertical direction, and a mounting plate 19 is attached to the upper end side of the slide base 191.
6 is formed. A cylinder 19B is supported by this mounting plate 196, and a lifting platform 202 is supported by a piston rod 200 extending vertically downward from the cylinder 19B.

The lifting table 202 is provided with guide parts 206a and 206b that engage with the rails 195a and 195b, and a support plate 208 is fixed to the lower end of the lifting table 202, and a cylinder 210 is fixed to the support plate 208. Ru. As shown in FIG. 6, a column 214 is pivotally attached to a piston rod 212 extending from a cylinder 210, and a circumferential groove 216 is defined in the outer periphery of this column 214.

In this case, a movable first pressing member 218 engages with the circumferential groove 216 . The first pressing member 21B is swingably supported at one end via a pin 220, and a locking portion 222 protruding toward the column 214 is formed at the end where the pin 220 is provided. Note that a fixed second pressing member 224 is provided opposite to the first pressing member 218.

Next, the engine oil injection nozzle 226 is detachably held via the respective pressing members 218 and 224.

As shown in FIG. 7, the nozzle 226 has a cylindrical body 22
8, an engine oil outlet 230a is formed at the tip of the main body 228, and a hole 230C communicates with the end of the outlet 230a via an inclined hole 230b. The hole 230C communicates with an oil port 232 formed on the outer circumference of the main body 228, and also communicates with the oil port 232.
32 communicates with an engine oil supply source (not shown). Further, a piston chamber 234 is defined within the main body 228,
This piston chamber 234 communicates with a first port 236a and a second port 236b formed on the outer periphery of the main body 228.

A piston portion 238 is disposed in the piston chamber 234,
A conical valve body 242 is formed at the tip of a rod 240 extending vertically downward from the end of the piston 238, and an outlet 230a is formed at the end of the valve body 242.
A column body portion 244 is provided which fits into the column body portion 244 . Note that a coil spring 246 is installed between the piston portion 238 and the main body 228.
Interpose.

Next, the sealing jig mechanism 18 will be described in detail below.

As shown in FIG. 8, the seal jig mechanism 18 includes a fixing plate 260, and the fixing plate 260 is attached to a side surface of the horizontal member 146 that corresponds to the side surface on which the respective rails 148a and 148b are attached. Ru. A cylinder 264 is attached to a plate body 262 which is attached horizontally to the lower part of the fixed plate 260, and guide cylindrical bodies 266a are provided on both sides of the cylinder 264, respectively.

266b is erected. A piston rod 268 extends vertically downward from the cylinder 264, and an elevating table 270 having an abbreviated shape is engaged with the piston rod 268. In this case, the lifting platform 270 has a guide bar 272a.
, 272b are engaged, and the guide bar 2728
．． 272b are fitted and guided by cylindrical bodies 266a and 266b, respectively. A long rectangular opening 274 is formed in the vertically oriented surface of the lifting platform 270, and a pair of parallel rails 276a and 276b are fixed to the outside of the opening 274 in the lateral direction. Ru. Therefore, slide tables 278a to 278C are movably disposed on the rails 276a and 276b.

A rail 276 is provided on one side of the slide table 278a.
Guide parts 280a and 282a are formed to engage with the guide parts 280a and 276b, and a locking plate 284a passing through the opening 274 of the elevator platform 270 is installed between the guide parts 280a and 282a. In this case, the locking plate 284a is
Piston rod 2 of cylinder 286a fixed to 70
88a.

On the other hand, a plate-shaped arm 290a is erected on the other surface of the slide table 278a, and a cylinder 294a is engaged with this arm 290a via a mounting plate 292a.

A movable member 298a is held by the piston rod 296a of the cylinder 294a, and in this case, the movable member 298a is attached to the rail 3 fixed to the arm 290a.
Engages with 00a. A seal jig 302a is disposed on the movable member 298a.

As shown in FIG. 9, the sealing jig 302a includes a cylindrical casing 304a, and the casing 304a is fixed to the movable member 298a. This casing 304a
An inclined hole portion 306a is formed inside, and the outlet side thereof has a small diameter. The holding member 30 is inside the casing 304a.
8a is housed, and a small diameter rod 310a formed at the end of this holding member 308a has a spherical portion 312a at its tip.
is provided. Further, an end portion of the sealing member 314a is housed within the casing 304a.

The sealing member 314a has a columnar shape, and an inclined surface 316a is formed at its outer peripheral end to correspond to the inclined hole 306a of the casing 304a. The inclined surface 316
A hole 318a is bored to a predetermined depth in the center of the sealing member 314a from the end side where the hole 318a is provided.
The spherical part 31 of the rod 310a is attached to the wall surface 320a that defines the
A spherical recess 322a having a larger curvature than 2a is formed. A coil spring 324a is interposed between the hole 318a and the holding member 308a, and a sealing rubber member 32 is provided at the other end of the sealing member 314a.
26a is installed. In this case, the recessed portion 322a only needs to have a larger curvature than the spherical portion 312a of the rod 310a, and for example, the wall surface 320a may be formed into a planar shape.

Note that the other slide tables 278b and 278C are constructed in the same manner as the slide table 278a described above, and the same reference numerals are given the same reference numerals as b and C, and detailed explanation thereof will be omitted. .

The apparatus for carrying out the engine oil injection method according to the present invention is basically constructed as described above, and its operation and effects will be explained next.

Therefore, the engine 2 transported via the transport device 12 is stopped and positioned at a predetermined position of the injection device 10 according to the present invention. Next, under the driving action of the injection device 10, the nozzle 128 constituting the first nozzle mechanism 14 is inserted into the oil level vibro of the engine 2, and the nozzle 28 constituting the second nozzle mechanism 16 is inserted into the oil injection port 4.
26, and the breather pipe 8 is closed by the seal member 314a that constitutes the seal jig mechanism 18.

That is, first, in the first nozzle mechanism 14, when the cylinder 28 is driven to displace the piston rod 30 in the direction of the arrow X in FIG. , 26b and the guides 36a, 36b that engage with the guides 36a, 36b. On the other hand, by driving the cylinder 38, the piston rod 4
0 in the direction of arrow Z (vertical direction), the support plate 42 attached to the piston rod 40 moves toward the guide bar 4.
It is guided by 68 degrees 46b and is displaced in the direction of arrow Z.

Furthermore, when the piston rod 52 is displaced in the direction of the arrow Y under the driving action of the cylinder 50, the movable plate 56 held by the piston rod 52 via the coil spring 62 is displaced in the direction of the arrow Y. As a result, nozzle 1
28 and the housing 86 equipped with the gripping means 98 are indicated by arrows X,
It is displaced in the Y and Z directions, that is, in the three-wheel direction of the orthogonal coordinate system, and is positioned near the oil level vibro of the engine 2. At that time, the protrusions 66a and 66b of the movable plate 56
The inclination angle of the housing 86 is adjusted in advance by selecting the amount of protrusion of the bolts 68a, 68b screwed into the housing 86.

Therefore, when the cylinder 50 is driven to further displace the movable plate 56 toward the oil level vibro of the engine 2, the guide plate 100 constituting the gripping means 98 provided in the housing 86 comes into contact with the oil level vibro. . In this case, the movable plate 56 has a holding portion 58 formed on one side thereof.
Since the guide plate 100 collides with the oil level vibro because it is pressed by the elastic force of the coil spring 62 interposed between the stopper 54 and the stopper 54 that is engaged with the piston rod 52, the guide plate 100 collides with the oil level vibro. There will be no inconvenience such as damage to the oil level vibro.

Next, after the oil vibro engages with the V-groove 102 of the guide plate 100, an actuator (not shown) constituting the gripping means 98 is driven. Therefore, each claw member 10
4a, 104b are displaced in the direction of approaching each other, and the V grooves 106a, 106 of the claw members 104a, 104b are
Hold the oil level vibro so that it fits into the V-groove 102 of the guide plate 100 described above.

Furthermore, by driving the cylinder 114, the piston rod 11
6 in the direction of the arrow, this piston rod 11
The movable table 120 is guided by the rails 122 through the elastic force of a coil spring 126 interposed in the movable table 120, and is similarly displaced in the direction of the arrow.

Therefore, the nozzle 128 mounted on the moving table 120 engages in the oil level vibro held by the gripping means 98. At this time, since the movable table 120 is displaced toward the oil level vibro through the elastic force of the coil spring 126, the nozzle 12B does not come into contact with the oil level vibro with an unnecessarily large force.

Next, the operation of the second nozzle mechanism 16 will be explained in detail below.

That is, in FIG. 5, when the motor 160 is driven to rotate the rotary drive shaft 162 in a predetermined direction, the first gear 164 attached to the rotary drive shaft 162 rotates, and the first gear 164 also rotates. The meshing second gear 166 rotates. Then, the rotation shaft 1 is integrated with the second gear 166.
A third gear 174 pivotally attached to
is displaced in the direction of arrow X.

On the other hand, if the motor 184 provided on the moving table 152 is driven to rotate the second pulley 1B2b in a predetermined direction, the first pulley 1B2b engaged with the second pulley 182b via the belt 185
When the first pusher 82a rotates, the screw shaft 180 that connects the first pusher 82a rotates in a predetermined direction. Therefore, the slide base 191 mounted with the nut member 194 into which the screw shaft 180 is screwed is displaced in the direction of the arrow Y.

Further, the cylinder 198 provided on the slide base 191 is driven to move the piston rod 200 in the direction of arrow Z (
If the piston rod 200 is displaced in the vertical direction), the piston rod 200
Similarly, the nozzle 226 is displaced in the direction of arrow Z via the lifting table 202 that is attached to the lift table 202 .

Thus, motor 160.184 and cylinder 19
8 to displace the nozzle 226 in the arrow XSY and Z directions, the nozzle 226 is moved toward the engine 2.
the oil inlet 4 of the At this time, the oil receiving member 188 is moved toward the nozzle 22 under the driving action of the cylinder 187.
Move away from 6.

Furthermore, the operation of the seal jig mechanism 18 will be described in detail below with reference to FIGS. 8 and 9.

When the cylinder 264 is driven to displace the piston rod 268 in the direction of the arrow Z axis, the elevating table 270 that is engaged with the piston rod 268 moves to the respective guide bars 272a,
272b and is displaced in the direction of arrow Z.

Therefore, in each sealing jig 302a to 302c,
When attempting to close the breather vibe 8 with the sealing jig 302a, the cylinder 286a is driven to displace the piston rod 288a in the direction of arrow X, and a slide table is secured to the piston rod 288a via the locking plate 284a. 278a to rails 276a, 276b
' in the direction of arrow X.

Then, when the sealing jig 302a reaches a position facing the breather pipe 8 of the engine 2, the driving of the cylinders 264 and 286a is stopped, and the cylinder 294a is stopped.
to drive. Therefore, the piston rod 296a is displaced in the direction of the arrow Y, and the movable member 298a that is engaged with the piston rod 296a is similarly displaced in the direction of the arrow Y via the rail 300a.

In this case, under the driving action of the cylinder 294a, the sealing jig 302a provided on the movable member 298a is moved in the direction of approaching the breather pipe 8 of the engine 2 (in FIG.
When displaced in the direction of arrow Y+force, the sealing jig 302
The sealing member 314a constituting a is the fiberizer pipe 8.
comes into contact with.

When the cylinder 294a is driven to further displace the sealing jig 302a in the force direction of arrow Y, the sealing member 314a enters the casing 304a against the elastic force of the coil spring 324a, and this sealing member 31
The spherical portion 312a of the rod 310a engages with the recess 322a formed in the wall surface 320a of the sealing member 3a.
14a is retained.

In this way, nozzles 2 are installed at the oil inlet 4, oil level vibro, and breather pipe 8 of the engine 2, respectively.
26, the nozzle 128 and the sealing jig 302a are engaged to supply compressed air for inspection into the engine 2 from the oil level vibro with the oil inlet 4 and breather pipe 8 closed.

That is, in FIG. 7, compressed fluid is supplied into the piston chamber 234 from the first port 236a of the main body 228 constituting the nozzle 226, and the piston part 238 is pressed vertically downward with the elastic force of the coil spring 246. The inclined hole portion 230b is firmly closed by the valve body portion 242 of the rod 240 that is integrally formed therewith.

Next, as shown in FIG. 10a, the switching valve 132 is driven to connect the pipe line 134a to the pipe line 130.

For this reason, the airflow meter 1 is connected to the compressed air supply source 138.
The compressed air supplied to the conduit 134a via the conduit 130 is supplied to the oil level vibro via the nozzle 128. Therefore, compressed air is introduced into the oil flow passage 5 including the oil pan in the engine 2, and the oil flow passage 5 is filled with this compressed air. that time,
A portion of the compressed air flows into the combustion chamber through a gap between the cylinder inner circumferential surface 9 and the piston 7, and flows out through a plug mounting hole (not shown). Then, the amount of compressed air led out to the outside through the gap between the piston 7 and the cylinder inner peripheral surface 9 is measured via the air flow meter 136, and if the measurement result is outside the reference range, the engine 2 is malfunctioning. If it is determined to be a good product, and on the other hand, the outflow amount of the compressed air is within a predetermined range, oil will be injected into the engine 2.

That is, as shown in FIG. 10, the switching valve 132 is driven to connect the pipe line 130 to the pipe line 134b connected to the vacuum generator 140. Therefore, the pipe line 134b
The air in the oil flow path 5 of the engine 2 is sucked through the nozzle 128, and the inside of the oil flow path 5 is brought into a negative pressure state. At this time, engine oil is injected into the engine 2 from the nozzle 226.

In FIG. 7, the supply of compressed fluid from the first boat 236a is stopped, and the piston chamber 23 is opened from the second port 236b.
When compressed fluid is supplied into the piston chamber 234 , the piston portion 238 slidably disposed within the piston chamber 234 is displaced vertically upward against the elastic force of the coil spring 246 . Rod 2 integrally formed with
40 rises as well. Therefore, the valve body portion 242 provided at the tip of the rod 240 is separated from the inclined hole portion 230b, and the oil boat 232 communicates with the oil outlet 230a. Therefore, if engine oil is supplied to the hole 230c from an oil supply source (not shown) through the oil port 232, the engine oil will be removed! Exit 230
The oil is supplied from a to an oil flow passage 5 in the engine 2 via an oil inlet 4. In this case, inside the oil flow passage 5 is a nozzle 1 connected to a vacuum generator 140.
The nozzle 2 is under negative pressure through the nozzle 28.
The engine oil supplied from 26 is effectively injected into the oil flow passage 5. This completes the oil injection process into the engine 2.

Then, the driving of the vacuum generator 140 is stopped, and the cylinder 114 is driven to displace the nozzle 128 integrally with the moving table 120 away from the oil level vibro, and under the driving action of the gripping means 98, the claw member 104a, 104b in a direction away from each other to release the gripping action of the oil level vibro by the gripping means 98. Further, the respective cylinders 28, 38 and 50 are actuated to
The nozzle mechanism 14 is separated from the engine 2.

On the other hand, in the second nozzle mechanism 16, the supply of compressed fluid from the second boat 236b of the nozzle 226 into the piston chamber 234 is stopped, and the valve body portion 242 of the rod 240 is tilted through the elastic force of the coil spring 246. The hole 230b is closed. Further, the cylinder 198 is driven to displace the piston rod 200 vertically upward, and the nozzle 226 is moved to the oil inlet 4 via the lifting platform 202 that is attached to the piston rod 200.
At the same time, the second nozzle mechanism 16 is suitably separated from the engine 2 by driving the motors 160 and 184.

At that time, the cylinder 187 is driven and the cylinder rod 18
7a toward the nozzle 226 side, and the oil receiving member 18
8 is disposed vertically below the nozzle 226. Therefore, the engine oil that tends to drip from the outlet 230a of the nozzle 226 is accommodated in the oil receiving member 188, thereby preventing the engine oil from adhering to the engine 2, other devices, etc.

Note that when replacing the nozzle 226 with another nozzle, as shown in FIG. 6, the cylinder 210 is driven to displace the piston rod 212 in the direction of the arrow. Therefore, column 2
14 is similarly displaced in the direction of the arrow, and the locking portion 222 engaged with the circumferential groove 216 is pressed, and the first pressing member 218
pivots about the pin 220 in a direction away from the second pressing member 224. As a result, each pressing member 218
The gripping action of nozzle 226 by and 224 is released.

Next, a new nozzle is placed between each of the pressing members 218 and 224, and the cylinder 210 is driven to displace the piston rod 212 in the opposite direction to the arrow, thereby moving the pressing member 218 in the opposite direction to the arrow. The new nozzle may be gripped by swinging it.

Furthermore, in the seal jig mechanism 18, the cylinder 2
The sealing jig 302a is separated from the breather vibe 8 under the driving action of the cylinder 94a, and the cylinders 264 and 2
86a to position the sealing jig mechanism 18 at a predetermined retracted position.

In this way, the engine 2 that has completed the leak test and oil injection process is transported to the next station via the transport device 12, and a new engine is carried into the injection device 10, and the new engine is processed as described above. Depending on the process, leak tests and oil injection work will be performed.

In this case, according to the present invention, the leak test in the oil flow passage 5 in the engine 2 and the step of injecting engine oil into the oil flow passage 5 can be performed automatically and continuously.

That is, as described above, first, the nozzles 128 and 226 and the seal jig 302 are installed in the oil level vibro, oil inlet 4 and breather pipe 8 of the engine 2, respectively.
engage a. Therefore, the outlet 2 of the nozzle 226
30a is closed by the valve body portion 242, compressed air is supplied from the compressed air supply source 138 into the oil flow passage 5 of the engine 2 through the nozzle 128, and a leak test in the oil flow passage 5 is performed. Next, the switching valve 132 is driven to connect the nozzle 128 to the vacuum generator 140 to suck the air in the oil flow passage 5, and at the same time, the valve body part 242 is separated from the inclined hole part 230b in the nozzle 226, not shown. Engine oil is supplied from the oil supply source into the oil flow passage 5 in the engine 2 via the outlet 230a.

In this way, by only once engaging the respective nozzles 128 and 226 with the oil level vibro and the oil inlet 4, the leak test of the oil flow path 5 of the engine 2 and the injection of engine oil into the oil flow path 5 can be performed. It becomes possible to perform the steps continuously. As a result, as before,
Compared to a system in which the leak test and oil injection process were performed separately, there is no need to replace the nozzle, the preparation work is simplified at once, and the leak test and oil injection process can be performed extremely efficiently.

Furthermore, the nozzles 12B, 226 and the seal jig 302a are arranged in three axial directions constituting an orthogonal coordinate system, that is,
Since it is configured to be freely displaceable in the directions of arrows X, Y, and Z, the installation of the oil level vibro, oil inlet 4, and breather vibe 8 in the engine 2 can be easily done even if the positions etc. of the engine 2 are different. becomes possible.

Moreover, in particular, in the present invention, the first nozzle mechanism 14 and the seal jig mechanism 18 are specially designed, so that even if the inclinations and positions of the oil level vibro and breather vibe 8 are greatly different, the oil level vibro and breather vibro 8 Nozzle 128 and seal jig 302a on breather vibe 8
can be effectively engaged.

That is, as shown in FIGS. 3 and 4, the casing 86 to which the nozzle 128 and the gripping means 98 are mounted is swingably disposed with respect to the movable plate 56 via the arm member 72. Further, the housing 86 has guide bars 92a, 92b and a coil spring 9 with respect to the arm member 72.
6a and 96b, it is configured to be freely displaceable in the direction of arrow X. Therefore, when driving the cylinder 50 to displace the movable plate 56 close to the oil level vibro of the engine 2, the housing 86 will not move in the direction of the arrow X even if the oil level vibro is installed in a different position. As a result, the oil level vibro is fitted into the groove 102 of the guide plate 100.

Further, when the guide plate 100 comes into contact with the oil level vibro, the casing 86 and the arm member 72 integrally move the coil spring 11 along the inclination of the oil level vibro.
It undergoes rocking displacement against the tensile force of 2. As a result, even if the inclination angle and mounting position of the oil level vibro in each engine 2 are different, it is possible to automatically adjust the position of the guide plate 100 in accordance with the oil level vibro, and the nozzle 128 can be adjusted in accordance with the oil level vibro. The effect of being able to engage accurately with the oil level vibro is obtained.

Furthermore, at this time, the nozzle 128 is swingably attached to the movable table 120 via a spherical bearing 127, so that the work of attaching the nozzle 128 to the oil level vibro can be accomplished even more reliably. I can do it.

On the other hand, as shown in FIG. 9, the sealing member 314a that contacts the breather pipe 8 in the sealing jig 302a is loosely fitted into the casing 304a, and this sealing member 3
The recessed portion 322a formed in the wall surface 320a of the rod 310a has a larger radius of curvature than the spherical portion 312a of the rod 310a. Therefore, the sealing member 314a is
12a, it is supported by point contact. Therefore, even if the breather pipe 8 is inclined with respect to the direction perpendicular to the surface of the seal member 314a, the breather vibe 8
The sealing member 314a can be tilted along the inclination of the rubber member 326a, and the breather pipe 8 can be completely closed off via the rubber member 326a.

As a result, even if there are variations in the positions of the oil level vibro, oil inlet 4, and breather pipe 8 in the same type of engine 2, even if there are variations in the positions of the oil level vibro, oil inlet 4, and breather pipe 8, even if there are various different engines, the leak test in the oil flow path can be performed. and the oil injection process can be performed automatically and efficiently. Therefore, the assembly line incorporating the injection device 10 can be easily automated and the number of work steps can be reduced, thereby making it possible to improve the efficiency of the assembly line.

[Effects of the Invention] As described above, according to the present invention, a leak test of an oil flow path for supplying engine oil supplied to an oil pan to a predetermined part in an engine and oil injection into the engine are performed. These operations are performed automatically and continuously using a single device. Therefore, it is possible to eliminate the need for nozzle replacement work, etc., which was traditionally done manually by workers when the leak test and oil injection work were performed independently, thereby reducing the burden on the workers. At the same time, it is possible to reduce the amount of work time required from the leak test to the end of the oil injection work at once. Moreover, since the nozzle means and sealing jig are configured to be freely displaceable in accordance with the shape of each engine, leak tests and oil injection work can be performed reliably even on various engines, and the leakage The advantage is that automation of testing and oil injection operations is easily accomplished. In particular, if the injection device is incorporated into an assembly line, the assembly line can be automated as much as possible, and the efficiency of the assembly line can be improved.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments.
Of course, various improvements and changes in design are possible without departing from the gist of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram of an engine being transported on an assembly line, Fig. 2 is a perspective view schematically showing an engine oil injection device according to the present invention, and Fig. 3 constitutes an injection device according to the present invention. FIG. 4 is a partially omitted perspective view of the first nozzle mechanism; FIG. 4 is a partial vertical sectional view of the first nozzle device shown in FIG. 3; FIG. FIG. 6 is a partial plan view of the second nozzle mechanism shown in FIG. 5; FIG. 7 is a vertical sectional view of the nozzle incorporated in the second nozzle mechanism shown in FIG. 5; FIG. A partially omitted perspective view of the sealing jig mechanism constituting the injection device according to the present invention, FIG. 9 is a vertical sectional view of the main part of the sealing jig mechanism shown in FIG. 8, and FIGS. 1O a and b are according to the present invention. It is an explanatory view when performing a leak test and oil injection work with such an injection device. 2... Engine 4... Oil inlet 6
... Oil level pipe 8 ... Breather vibe l
O... Injection device 12... Conveyance device 14
．． 16... Nozzle mechanism 18... Seal jig mechanism 32... Moving table 56... Movable plate 8
6... Housing 98... Gripping means 12
8... Nozzle 152... Moving table 191
...Slide base 202...Elevating platform 226.
・Nozzle 260 ・Fixing plate 302a・
...Seal ROM 304a...Casing 314a...Seal member FIG, 1

Claims (5)

[Claims] (1) Among the plurality of openings that communicate the oil flow passage formed inside the engine with the outside, at least one first
the first nozzle means is inserted into the opening of the second nozzle means, the second nozzle means is inserted into at least one or more second openings, and the remaining openings are closed with a sealing member; A leak test is performed on the oil flow passage by supplying test fluid into the oil flow passage through the first nozzle means with the second opening closed, and further, the result of the leak test is within an acceptable range. An engine oil injection method characterized in that oil is supplied into the oil flow passage from the second nozzle means while leading air in the oil flow passage to the outside through the first nozzle means. (2) An engine oil injection device that supplies engine oil into the oil flow passage after performing a leak test on the oil flow passage by supplying a test fluid into the oil flow passage formed in the engine. a sealing means for closing an opening defined in the engine; a first nozzle means connectable to the test fluid supply source and the negative pressure generator; and a passageway communicating with the oil supply source. and a second nozzle means configured to open and close the passage, and the sealing means and the first and second nozzle means are configured to be displaceable in a predetermined direction with respect to the engine. injection device. (3) In the device according to claim 2, the first
The nozzle means substantially includes a grip for an oil level pipe of the engine and a nozzle insertable into the oil level pipe, the other opening communicating with the oil flow passage of the engine being sealed with the second nozzle means. A test fluid is supplied from the nozzle in a closed state with a means, a leak test is performed on the oil flow passage through a detection means connected to the nozzle, and then a negative pressure generator is connected to the nozzle. An engine oil injection device configured to suction the inside of the oil flow passage and supply engine oil from the second nozzle means into the oil flow passage. (4) In the device according to claim 3, a nozzle is attached to a housing provided with a grip so that the nozzle can move forward and backward with respect to the grip under the action of an actuator, and the housing is attached to the housing through an elastic body. An engine oil injection device configured to at least swing freely. (5) In the device according to claim 2 or 3, the sealing means includes a casing that can move forward and backward with respect to the engine under the action of an actuator, and a spherical end portion that is secured within the casing. a holding member; and a sealing member having one end facing inside the casing and forming a curved or flat surface having a larger curvature than the end, the sealing member displacing the casing close to the breather pipe of the engine under the action of the actuator. A member is pressed into contact with the breather pipe to close it, and an end of the seal member is engaged with the curved surface or flat surface against the elastic force of the elastic body to hold the seal member. Engine oil injection device.