JP3503680B2 - Guide pin changing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic engine assembling apparatus, in which guide pin exchange for exchanging guide pins for positioning and supporting the work assembling / temporary tightening device according to the type of work to be assembled to the crankshaft of the engine. Regarding the device.

[0002]

2. Description of the Related Art In an engine assembly line, a manual transmission (M / T) vehicle engine has a plurality of (5) flywheels FW mounted on a crankshaft CS of an engine E as shown in FIGS.
Bolt) BT is screwed into the screw hole Hb and temporarily tightened.
On the other hand, in an engine of an automatic transmission (A / T) vehicle, a centering bush BU is attached to a central positioning hole Ha of a crankshaft CS of an engine E as shown in FIGS. Drive plate DP and adapter plate AP are assembled, a plurality of (five) bolts BT are screwed into the screw holes Hb and temporarily tightened, and the next assembly step is carried. Bolt BT
Is temporarily tightened to such an extent that the flywheel FW and drive plate DP attached to the crankshaft CS do not fall. Some types of drive plates do not use bushes.

[0003]

The above-described conventional work (flywheel or drive plate) is assembled to the crankshaft by an operator, which is used for improving productivity and working environment. Automation is required to respond. When automating the assembling of these works, it is necessary to position the crankshaft of the engine in the rotation direction, position the work in the rotation direction, and position and mount the positioned work in the assembling device.
However, these workpieces differ depending on the type of engine and have a plurality of shapes to be handled, and it is extremely difficult to position them by a common jig such as a guide pin.

Therefore, an object of the present invention is to provide a guide pin exchanging device for exchanging guide pins for positioning and supporting the work assembling / temporary tightening device according to the type of the work to be assembled to the crankshaft of the engine. There is.

[0005]

In order to achieve the above object, according to claim 1 of the present invention, the guide pin exchanging device is a work assembly for temporarily mounting and fixing a work to a crankshaft of a positioned engine. opposite the guide pin mounting unit which kicked set the temporary fastening device, and rotatably the rotary plate is rotated provided along the rotating plate in the circumferential direction guide pin mounting part can face the provided predetermined A plurality of pin sockets for accommodating the guide pins are provided, a guide pin corresponding to the work to be assembled to the crankshaft is indexed therefrom, and a pin socket for accommodating the guide pin to replace the rotating plate faces the guide pin mounting portion. The guide pin mounting portion at a predetermined moving position of the work assembly / temporary tightening device. After storing the corresponding pin sockets removed Dopin, mounting the indexing guide pin to the guide pin mounting unit. Thereby, the guide pin of the guide pin mounting portion of the work assembling / temporary tightening device can be exchanged according to the type of work.

[0006] The pin socket of the guide pin changer is
Store the tip that supports the Idpin workInstalled on the side
KickedIt is detachably retained by the retaining means. this
This makes it easy to replace the guide pin according to the workpiece.
It ClaimTwoIn the invention of, the guide pin isRear end of shaftBut
It is stored in the guide pin mounting part of the work assembly / temporary tightening device,
And, it is detachably retained. This allows the guide pins
It becomes easy to exchange the service.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be exemplarily described in detail below with reference to the drawings. 5 shows a schematic configuration diagram of an automatic engine assembly apparatus as an embodiment of the present invention, and FIG. 6 shows a schematic side view of FIG. 5 and 6, in the automatic assembly apparatus 1, a line conveyor 3 for transporting the engine E is arranged on the front side (front side in the drawing) of the base 2, and the flywheel FW as a work is arranged on the rear side of the base 2. , Flywheel supply conveyor 4 for supplying drive plate DP, drive plate supply conveyor 5
Is provided, and a bush supply device 6 for supplying the bush BU, an adapter plate supply device 7 for supplying the adapter plate AP, a flywheel FW, and a bolt BT for attaching the drive plate DP to the crankshaft CS of the engine E are provided on the right side in the drawing. A bolt supply device 8 for controlling the assembling device, a control device 9 for controlling the assembling device 1, and the like are arranged. And, in the approximate center of the base 2, a multi-axis for assembly (6 axes)
A robot 10 is provided and includes a flywheel FW, a drive plate DP, and a bush B from the supply device.
U, the adapter AP, etc. are received and supplied to the crankshaft CS of the engine E on the line conveyor 3. The engine E is placed on a pallet, is placed on the line conveyor 3 with the flywheel of the crankshaft CS or the drive plate attachment end surface facing the robot 10, and is conveyed in the arrow direction.

A flywheel and a drive plate assembling / temporary fastening device (hereinafter referred to as a "workpiece assembling / temporary fastening device") 20 are provided on the base 2 of the robot 2 on the front side of the robot 10.
The flywheel and drive plate rotational direction positioning device (hereinafter referred to as “workpiece rotational direction positioning device”) 30 on the left side of the robot 10 in the figure.
Are arranged. A crankshaft rotation direction positioning device 40 is arranged in front of the work assembling / temporary fastening device 20 with a slight gap from the line conveyor 3, and the crankshaft rotation direction positioning device 40 is disposed on the back side (the robot 10 side). ) Is integrally provided with a guide pin exchanging device 50. A bolt distribution delivery device 60 is arranged between the work assembling / temporary fastening device 20 and the guide pin exchanging device 50.

The flywheel supply conveyor 4 has a plurality of types (for example, 10 types) of flywheels FW, and the drive plate supply conveyor 5 has a plurality of types (for example, 7 types).
Type) drive plate DP, the bush supply device 6
Is a plurality of types (for example, two types) of the bush BU, and the adapter plate supply device 7 supplies a plurality of types (for example, two types) of the adapter plates AP toward the robot 10 side, respectively. The adapter plate supply device 7 has a front / back surface inspection unit that determines the front / back of the loaded drive plate DP, and a rotation direction positioning unit that positions the determined drive plate DP in the rotation direction.

A plurality of adapter plates AP are stacked in a stack to form one set, and the adapter plates AP are supplied to the adapter plate supply device 7 with the front side facing upward. In this one set, there may be a mixture of the front side facing downward (facing the back side). Therefore, the front and back inspection unit
Determine the front and back of the adapter plate and eliminate the adapter plate facing the back side. Further, the front and back inspection unit eliminates all the adapter plates of the set, for example, when the two adapter plates are continuously facing the back side, it is assumed that the entire remaining adapter plates of the set are facing the back side. . This is to reduce the waste of cycle time in consideration of a case where the operator sets the front and back incorrectly.

The bolt supply device 8 has a plurality of types (for example,
Three types of bolt supply parts 8a to 8c are provided. The bolt supply section 8a is a long bolt for the flywheel FW, and the bolt supply section 8b is a drive plate DP.
The bolt supply portion 8c supplies a bolt for preventing loosening. These bolts are supplied to the bolt distribution delivery device 60 through the tubes 8d to 8f for carrying bolts.

The robot 10 is, for example, a six-axis robot and has three hands. When the drive plate DP is assembled, the bush BU and the drive plate DP are used.
The three workpieces of the adapter plate AP can be individually gripped and assembled to the crankshaft in a predetermined order. If the flywheel FW is assembled, 1
Two hands are used.

The work rotation direction positioning device 30 positions the flywheel FW or the drive plate DP as a work in the rotation direction according to the crankshaft CS in which the rotation direction is positioned.
Thus, the flywheel FW or the drive plate DP taken out and supplied from the flywheel supply conveyor 4 or the drive plate supply conveyor 5 is rotated and positioned at a predetermined rotation position. The positioned flywheel FW or drive plate DP is taken out by the robot 10 and supplied to the head 22 of the work assembly / temporary fastening device 20.

Crankshaft rotation direction positioning device 4
No. 0 is arranged so as to be able to move up and down as shown by arrows A and B in FIG. 6, and the work is assembled at the raised position (standby position).
The head 22 and the nut runner 23 of the temporary tightening device 20 are
The lower side of the crankshaft rotation direction positioning device 40 can be moved back and forth in the direction of the line conveyor 3. The crankshaft rotation direction positioning device 40 faces the flywheel or the drive plate mounting end surface of the crankshaft CS of the engine E, which is placed on the line conveyor 3 and conveyed at the lowered position (positioning position) and stopped. And the crankshaft CS
It engages with the knock pin of and is rotated until a predetermined rotation position, for example, the knock pin is located right above.

Since the guide pin exchanging device 50 will be described in detail later, it will be briefly described here to explain the overall structure of the assembling device 1. The guide pin exchanging device 50 has many types and a complicated shape when the flywheel or the drive plate whose rotational direction is positioned is previously mounted on the head 22 of the work assembling / temporary tightening device 20. Since it is extremely difficult to perform positioning and support with a common jig or the like, a plurality of types of work supporting guide pins are provided, and the head 22 is exchanged and mounted according to the type of the work. .

Like the crankshaft rotation direction positioning device 40, the bolt distribution delivery device 60 is arranged so that it can be raised and lowered, and the flywheel and drive plate assembly / temporary fastening device 20 main body 21 and head 2 are located in the raised position.
2 and the nut runner 23 are the bolt distribution and delivery device 6 concerned.
It is possible to move back and forth below 0 in the direction of the line conveyor 3. Then, a plurality of workpieces (5) necessary for assembling the work to be assembled to the crankshaft of the engine E, that is, the flywheel or the drive plate at the raised position (5
Bolts) are sequentially received from the bolt supply device 8 one by one, and at the lowered position, the five bolts are distributed and supplied to the five nut runners 23 of the work assembling / temporary tightening device 20 at once. The bolt distribution delivery device 60 is used for the nut runner 2
After supplying the bolt to No. 3, it rises, receives the bolt of the next work from the bolt supply device 8, and stands by.

The work assembling / temporary tightening device 20 has a main body 21 which can be moved forward and backward horizontally and a head 22.
Is also movable forward and backward with respect to the main body 21.
Further, as shown in FIG. 6, the head 22 is rotatable by an arm 24 upward from the horizontal position indicated by the solid line so that its front surface faces upward. And head 2
2 receives and holds the flywheel or drive plate rotationally positioned from the robot 10 at a position rotated upward by 90 ° as shown by the chain double-dashed line. In addition, the bolt distribution delivery device 60 is attached to the five nut runners 23.
From which 5 bolts are distributed.

The work assembling / temporary tightening device 20 includes a head 22.
After receiving the work and the nut runner 23 receiving the bolt, the arm 24 pivots from the vertical position to the horizontal position and returns to perform the assembling / temporary tightening operation. That is, work assembly
The provisional tightening device 20 does not drop the work in a state where the head 22 is moved forward and is conveyed on the line conveyor 3 and the positioning is stopped on the flywheel of the crankshaft CS of the engine E or the drive plate mounting end surface in the accurately positioned state. Then, the nut runners 23 move forward and the bolts are respectively inserted through the bolt holes of the flywheel or the drive plate and screwed into the screw holes on the end surface of the crankshaft CS to temporarily fix them. .

The control device 9 includes the above devices and the robot 1.
The flywheel FW or the drive plate DP is assembled to the crankshaft CS of the engine E by controlling 0 according to a predetermined sequence, and temporarily fixed. Next, the guide pin exchanging device 50 will be described in detail. Figure 7 is a fragmentary cross-sectional view of the crankshaft rotation direction positioning device 40 and guide pin exchanging device 50 shown in FIG. 6, FIG. 8 is a fragmentary enlarged sectional view of FIG. 7, FIG. 9, arrow IX in FIG. 7 -A plan view along the line IX . 7 to 9, a crankshaft rotation direction positioning device 40 and a guide pin exchange device 50.
Are supported by a gate-shaped support frame 400 so as to be able to move up and down. Left and right columns 401 and 402 of the support frame 400
A base plate 407 is provided on the front surface of the above so as to be vertically movable via LM guides 405 and 406. A cylinder 408 is vertically mounted on the beam 403 of the support frame 400 at a substantially center thereof, and a lower end thereof is fixed, and a tip of a rod 409 is fixed to an upper center of a base plate 407.

A stopper for positioning the base plate 407 and a shock absorber (both not shown) are provided at predetermined height positions of the columns 401 and 402, respectively. The base plate 407 is moved up and down by the cylinder 408, and the shock is absorbed by the shock absorber when the base plate 407 is lowered, and the lower end surface contacts the stopper and is positioned at the height position. A crankshaft rotation direction positioning device 40 is arranged on the front side of the base plate 407, and a guide pin exchanging device 50 is arranged on the rear side thereof, which are arranged at the same height position.

Support shaft 501 of guide pin exchange device 50
Are arranged horizontally and the base end of which is the base plate 407.
The rotary shaft 502 is rotatably supported on the support shaft 501. A gear 503 is fixed to the base end of the rotary shaft 502, and a rotary plate 504 is fixed to the front end. As shown in FIG. 9, a drive motor 505 is fixed to the front surface of the base plate 407 in parallel with the rotary shaft 502, and a gear 506 fixed to the rotary shaft meshes with a gear 503 of the rotary shaft 502.

As shown in FIG. 10, the rotating plate 504
Has a disc shape, and a plurality of, for example, six pin sockets 511 to 516 are arranged at equal intervals along the circumferential direction on the peripheral edge of the rear surface. These pin sockets 511-516
Has a bottomed cylindrical shape as shown in FIG.
2 are arranged in parallel with each other, and each base end portion is fixed to the rotating plate 504. The guide pin 5 is attached to the pin socket 511.
The front end portion 581a and the front portion 581b of 81 are stored.
The guide pin 581 has a tip portion 581a and a front portion 581.
Let b be the tip. Other pin sockets 512 to 512
The same applies to 516. Positioning holes 5 are formed on the bottom surfaces of the rotary plate 504 and the pin sockets 511 to 516.
11a to 516a (positioning holes 511a and 514 shown in FIG.
Only a is shown). Each pin socket 511
Clamp bars 517 to 522 are arranged along the axial direction on the outer peripheral portions of to 516, and each central portion is swingably supported by a pin.

As shown in FIG. 8, the clamp bar 517 serving as a locking means is a hook-shaped locking claw 517a having a tip bent at a right angle inward in the radial direction of the pin socket 511, and a tip surface 511b. It is an inclined surface extending outward from the tip of the locking claw 517a. A spring 523 is contracted between the base end portion 517c of the clamp bar 517 and the base end of the pin socket 511.
Is urged to the illustrated guide pin locking position. The same applies to the other clamp bars 518 to 522. Predetermined positioning guide pins 581 to 586 (FIG. 10) for positioning and supporting the flywheel or the guide plate are mounted and held on these pin sockets 511 to 516, respectively.

In each of the pin sockets 511 to 516, the guide pin can be replaced when the rotary plate 504 is rotated and positioned right below, and the pin socket positioned right above is positioned and locked. , Rotating plate 504
Is locked. As shown in FIGS. 7 and 9, the positioning mechanism 525 as the positioning means is provided with a base plate 407.
Is arranged on the upper part of the cylinder 526 and the knock pin 527.
It is composed of and.

The cylinder 526 has a base plate 407.
Parallel to each pin socket 511-516 at the upper position of
Moreover, the rod is arranged so as to face the positioning hole of the pin socket located right above, and is fixed via the bracket. A knock pin 527 is fixed to the tip of the rod, and a dog 528 is fixed to the rear end. When the cylinder 526 extends, the knock pin 527 fits into the positioning hole of any of the pin sockets 511 to 516 to position and lock the rotary plate 504 at that position, and when the cylinder 526 shortens, the knock pin 527 comes out of the positioning hole. It comes out and enables the rotation plate 504 to rotate.

The cylinder 526 includes a sensor 5 for position detection.
50 and 551 are provided, the sensor 550 detects the extended position of the cylinder 526 (positioning end of the knock pin 527), and the sensor 551 detects the shortened position of the cylinder 526 (return end of the knock pin 527). In addition, FIG.
Further, as shown in FIG. 10, photoelectric sensors 552 and 553 are provided at the lower end of the base plate 407 to detect the presence or absence of guide pins of the pin socket located right below.

Further, as shown in FIG. 10, at the lower end of the base plate 407, a sensor 5 for detecting that the pin socket located immediately below has finished replacing the guide pin.
54 is provided via a bracket 530. This sensor 554 is a base end portion 51 of the clamp bar 517 of the pin socket 511 located right below as shown in FIG.
7c is arranged so as to face the upper surface of 7c with a slight gap, and when the clamp bar 517 is in the locking position as shown in the figure, it is turned on closely, and the clamp bar 517 is rotated counterclockwise as indicated by the arrow. When it is rotated and is in the unlocked position, it is separated and turned off.

Further, as shown in FIGS. 8 and 11, a dog (pin) 5 as guide pin indexing means is provided at a predetermined position along the circumferential direction on one end surface of the gear 503 of the rotary shaft 502.
35-537 are provided and the base plate 407
Is provided with guide pin detection sensors 555 to 557 so as to be able to face these dogs 535 to 537. The guide pins 5 mounted on the pin sockets 511 to 516 by these sensors 555 to 557 as shown in FIG.
81-586 are detected. An example of the operation of these guide pin detection sensors 555 to 557 is shown in FIG. Any one of these six guide pins 581 to 586 is mounted on the guide pin housing 240 as the guide pin mounting portion of the head 22 of the work assembling / temporary fastening device 20. For example, the guide pin 581
Is a guide pin housing 24 as shown in FIGS.
It is attached to 0. The six pin sockets 51
It is not necessary to attach the guide pins to all of 1 to 516, but it is preferable to attach all the necessary guide pins. The control device 9 inputs a signal from each of the sensors and controls the guide pin exchanging device 50.

FIG. 8 shows the structure of the guide pin housing 240 of the head 22 of the work assembling / temporary tightening device 20 shown in FIG. In FIG. 8, the guide pin housing 240
Has a hollow shaft whose tip is open, is arranged horizontally and has a flange 240 a fixed to the plate 227. The rod 2401 is slidably fitted in the guide pin housing 240 in the axial direction, and the base end portion 2401a projects from the end portion, and the stroke adjusting screw 2402 is screwed onto the rod 2401. A spring 2403 is contracted between a spring seat 2401b provided at substantially the center of the rod 2401 and an end thereof, and urges the rod 2401 to the right in the figure. A hole 240d that opens upward is provided in a substantially central portion of the side wall of the guide pin housing 240, and the tip end 243a of the lock lever 243 as the guide pin locking means.
Are allowed to enter and leave. The base end of the lock lever 243 has a cylinder 2 fixed vertically to the plate 227.
It is fixed to 42 rods. A front end 243a of the lock lever 243 is bifurcated so that it can be engaged with a locking portion of a guide pin described later.

The guide pin 581 has a tip portion 581a which can be fitted into a predetermined flywheel or a positioning hole of a drive plate, a front portion 581b having the same diameter as the outer diameter of the guide pin housing 240, and a shaft portion 581c. It is fitted in the guide pin housing 240 and slidable in the axial direction. At the rear end of the shaft portion 581c, the small-diameter locking portion 5 is provided.
81d is formed. This locking portion 581d is in a state shown in the drawing in which the shaft portion 581c as the base portion and the locking portion 581d are fitted into the guide pin housing 240 and the end surface of the front portion 581b abuts the opening end surface of the guide pin housing 240. At the fork tip 2 of the lock lever 243,
43a can be engaged. At this time the rod 240
1 is pushed by the shaft portion 581c of the guide pin 581 and retracts against the spring force of the spring 2403.

In the state shown in the drawing in which the cylinder 242 is extended, the lock lever 243 descends and the tip 243a engages with the engaging portion 581d of the guide pin 581, and the guide pin 581 is retained and retained by the guide pin housing 240. To do. As shown in FIG. 13, when the cylinder 242 is shortened, the lock lever 243 rises and the tip end portion 243a disengages from the locking portion 581d of the guide pin 581 to release the engagement.
This allows the guide pin 581 to slide in the axial direction. The rod 2401 pushes the guide pin 581 out of the guide pin housing 240 by the spring force of the spring 2403 when the engagement of the guide pin 581 is released. Accordingly, the guide pin housing 24 of the guide pin 581
It is possible to take out from 0. Other guide pins 582
The same applies to ~ 586.

Next, the operation of the guide pin exchanging device will be described with reference to FIGS. As shown in FIGS. 5 and 6, the engine E is conveyed to the line conveyor 3 and carried into the automatic assembling apparatus 1, and the flywheel mounting end surface of the crankshaft CS has the head 2 of the work assembling / temporary tightening apparatus 20.
The positioning is stopped at a position directly facing the guide focus attached to the second guide pin housing 240. The guide pin housing 240 is provided with, for example, a guide pin 581 which was positioned when the flywheel or the drive plate was previously attached to the crankshaft. On the other hand, in the guide pin exchanging device 50, the pin socket 511 for accommodating the guide pin 581 is positioned directly below. As described above, since the pin socket of the guide pin mounted on the guide pin housing 240 is always positioned right below, the guide pin can be quickly replaced.

When the positioning of the engine E is stopped, FIG.
As shown in FIG. 5, the cylinder 408 extends and the base plate 407 descends, and positioning is stopped by the stopper. In the guide pin exchanging device 50, as described above, the pin socket 511 for accommodating the guide pin 581 is positioned right below, and when the positioning of the base plate 407 is stopped as shown in FIGS. 7 and 8, the pin socket 511 is positioned. 511 faces the guide pin 581. At this time, the photoelectric sensors 552 and 553 (Fig. 10 ) are connected to the pin socket 51.
It detects that there is no guide pin in 1.

Next, the work assembling / temporary fastening device 20 advances in the direction of the arrow, and the tip portion 581a and the front portion 581b of the guide pin 581 are fitted into the pin socket 511 as shown in FIG. At this time, in the clamp bar 517 of the pin socket 511, the inclined surface 517b at the tip is the guide pin 581.
The guide pin 581 is inserted into the guide pin 581 by being pushed by the tip portion 581a and rotated counterclockwise as shown by an arrow against the spring force of the spring 523. In the clamp bar 517, the locking claw 517a has the guide pin housing 2
It is pressed against the outer peripheral surface near the open end of 40. When the clamp bar 517 rotates, the base end portion 517c is separated from the sensor 554, and the output of the sensor 554 is turned off. This detects that the guide pin is being replaced.

Next, the cylinder 242 is shortened, the tip 243a of the lock lever 243 is separated from the engaging portion 581d of the guide pin 581, and the engagement is released. Next, the work assembly / temporary fastening device 20 is retracted. Along with this, the guide pin housing 240 retracts. At this time, rod 2
401 presses the guide pin 581 by the spring force of the spring 2403, and holds the guide pin 581 attached to the pin socket 511. The guide pin housing 240 is retracted and the front portion 581b of the guide pin 581 is moved.
14, the clamp bar 517 is rotated clockwise by the spring force of the spring 523 as shown in FIG. 14, and the locking claw 517a is moved to the front portion 581 of the guide pin 581.
Lock the end face of b. As a result, the guide pin 581 is held in the pin socket 511. When the work assembling / temporary tightening device 20 further retracts, the shaft portion 581 of the guide pin 581
c is taken out from the guide pin housing 240. This completes the reception of the guide pins 581 from the work assembling / temporary tightening device 20 of the guide pin exchanging device 50. Then, the work assembling / temporary tightening device 20 retracts to a predetermined position and stands by.

Next, the control unit 9 (FIG. 5) guides the guide pin corresponding to the flywheel or the drive plate assembled to the engine E whose positioning is stopped, for example, the guide pin 584 shown in FIG. 8 and FIG. It is attached to the housing 240. Contrary to the above, the control device 9 shortens the cylinder 526 of the guide pin exchanging device 50 shown in FIGS. 7 and 9 to retract the knock pin 527,
The rotation plate 504 is unlocked to be rotatable.
When the sensor 551 detects the return end of the knock pin 527, the motor 505 starts and rotates the rotating plate 504. The controller 9 controls the sensor 55 as shown in FIG.
The guide pin 584 is indexed according to the detection signals from 5 to 557, and when the guide pin 584 is located at the position directly below (replacement position), the motor 505 is stopped and the cylinder 526 is extended. Knock pin 527 into the positioning hole of the pin socket 517
Align and position.

The work assembling / temporary tightening device 20 includes a sensor 55.
When 0 detects the positioning end of the knock pin 527, it moves forward and the guide pin housing 240 is fitted to the shaft portion of the guide pin 584. At this time, the rod 2401 is retracted by the guide pin 584 against the spring force of the spring 2403. Then, the cylinder 242 is extended and the tip 243a of the lock lever 243 is moved to the rear end of the shaft portion of the guide pin 584.
The guide pin 584 is locked by engaging with the engaging portion of . When the work assembling / temporary tightening device 20 is retracted in this state, the guide pin 584 is taken out from the pin socket 514. As a result, the guide pin 584 is moved to the guide pin housing 2
It is attached to 40. In this way, the exchange of the guide pin is completed. In the guide pin exchanging device 50, when the exchanging of the guide pin is completed, the cylinder 408 (FIG. 7) is shortened and lifted to the upper end position to stand by.

[0038]

According to the present invention, in the invention of claim 1,
The guide pin changing device rotates a rotating plate that is rotatably provided opposite to the guide pin mounting part provided in the work assembly / temporary tightening device that assembles the work on the crankshaft of the positioned engine and temporarily fixes it. A plurality of pin sockets that are driven to be provided so as to face the guide pin mounting portion along the circumferential direction and accommodate predetermined guide pins are provided on the rotary plate, and guide pins corresponding to the work to be assembled to the crankshaft are indexed from this, The rotary plate is positioned at a position where the pin socket for accommodating the guide pin to be replaced faces the guide pin mounting portion, and is mounted on the guide pin mounting portion at a predetermined moving position of the work assembly / temporary tightening device. Remove the existing guide pin, store it in the corresponding pin socket, and then remove the indexed guide pin. By installing the guide pin in the guide pin mounting part, it is possible to easily replace the guide pin in the guide pin mounting part of the work assembly / temporary tightening device according to the type of work, improving the engine productivity and working environment. Will be improved. Further, the guide pin exchanging device has a simple structure and can be provided at a low cost.

[0039] The pin socket of the guide pin changer is
Locking means by accommodating the tip that supports the work of the id pin
It can be easily attached and detached by using the
It can hold the dopin and it can be used for different types of work.
The corresponding guide pin can be easily replaced. ClaimTwoInvention of
Then, of the guide pinShaft rear endOf the work assembly / temporary tightening device
Removably locked and retained in the guide pin mounting part.By this
This makes it easier to attach and detach the guide pin, and
Replacement of id pin becomes easy.

[Brief description of drawings]

FIG. 1 is an explanatory view of assembling a flywheel to a crankshaft of an engine.

FIG. 2 is a cross-sectional view showing the relationship between the crankshaft and the flywheel of FIG.

FIG. 3 is an explanatory view of assembling the drive plate and the adapter plate to the crankshaft of the engine.

FIG. 4 is a cross-sectional view showing the relationship between the crankshaft and drive plate of FIG.

FIG. 5 is a perspective view showing an embodiment of an automatic engine assembling apparatus including a guide pin exchanging device according to the present invention.

FIG. 6 is a schematic side view of FIG.

7 is a cross-sectional view of essential parts of the crankshaft rotation direction positioning device and the guide pin exchange device of FIG.

8 is an enlarged cross-sectional view of a main part of the guide pin changing device of FIG.

9 is a sectional view taken along the line IX-IX in FIG.

FIG. 10 is a front view of the rotating plate of FIG.

11 is a front view taken along the arrow line XI-XI in FIG.

12 is a diagram showing an example of indexing of the guide pin of FIG.

13 is an explanatory diagram of a case where the guide pin is taken out from the work assembling / temporary tightening device in the guide pin exchanging device of FIG.

14 is a diagram showing a state in which the guide pin shown in FIG. 13 is housed in a guide pin exchanging device.

[Explanation of symbols]

1 Engine Automatic Assembly Device 3 Line Conveyor 4 Flywheel Supply Conveyor 5 Drive Plate Supply Conveyor 6 Bush Supply Device 7 Adapter Plate Supply Device 8 Bolt Supply Device 9 Control Device 10 Robot 20 Workpiece (Flywheel and Drive Plate)
Assembly / temporary tightening device 30 Work (flywheel and drive plate)
Rotation direction positioning device 40 Crankshaft rotation direction positioning device 50 Guide pin exchange device 60 Bolt distribution delivery device 400 Frame 504 Rotation plates 503, 506 Gear 505 Motor 511-516 Pin socket 525 Positioning mechanism 555-557 Sensor 581-586 Guide pin 535 ~ 537 dog (pin) E engine CS crankshaft NP knock pin FW flywheel (work) DP drive plate (work)

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryuji Shiode 5-3-8, Shiba, Minato-ku, Tokyo Within Mitsubishi Motors Corporation (72) Inventor Yuichi Hazaki 4-21-1, Shimomaruko, Ota-ku, Tokyo Sanritsu Automobile Engineering Co., Ltd. (72) Inventor Satoshi Fujiwara 4-21-1, Shimomaruko, Ota-ku, Tokyo Sanritsu Automobile Engineering Co., Ltd. (56) Reference JP-A-7-303996 (JP, A) JP-A-7-17444 (JP, A) JP-A-6-246557 (JP, A) Actually opened 64-50182 (JP, U) Actually opened 64-56930 (JP, U) Actually opened 2-66926 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B23P 19/00-21/00

Claims (2)

(57) [Claims] 1. A work assembly for mounting a work on a crankshaft of a positioned engine and temporarily fixing the work.
The guide pin for supporting said workpiece in the guide pin mounting portion provided in the provisional fastening device is mounted, said in response to the workpiece
A guide pin exchanging device for exchanging a guide pin, wherein the guide pin includes a tip end portion supporting the work and a tip end thereof.
It has a smaller diameter than the end and can be attached to and detached from the guide pin mounting part.
Consists of a shaft portion which is accommodated in capacity, the guide pin exchange device, before outs and Idopin mounting portion rotating mounted for opposing and rotating the plate, the guide pin said the rotating plate along the circumferential direction It is provided so that it can be opposed to the mounting part, and the tip of the prescribed guide pin
A plurality of pin sockets for detachably storing the parts , and a swingably provided side part of the pin sockets.
A locking claw is provided, and the locking claw is the tip of the guide pin.
Part is pushed by the part to insert the tip part into the pin socket.
Allow the insertion and lock the inserted tip,
When the guide pin shaft is stored in the id pin mounting part
Is pushed by the tip of the guide pin mounting part.
The lock is released and the guide pin is removed from the pin socket.
Clamp lever that can be taken out and the clamp lever
The pin is contracted between the base end of the bar and the pin socket.
It consists of a spring that biases the lamp lever to the locked position.
And Rukakaritome means, positioning means pin socket for accommodating a guide pin to be replaced for positioning the rotary plate at a position opposite to the guide pin mounting portion, and a driving means for rotating the rotary plate, the rotary Installed along the circumference of the plate's axis of rotation.
A plurality of dogs that rotate with the rotating plate, and
A plurality of sensors for detecting the positions of the dogs, and indexing means for indexing a predetermined guide pin from the guide pins mounted on the plurality of pin sockets. The guide pin mounted on the guide pin mounting portion is taken out at a predetermined movement position of the tightening device and stored in a corresponding pin socket, and the indexed guide pin is mounted on the guide pin mounting portion. Guide pin exchange device. 2. The guide pin is such that the rear end of the shaft portion is the guide.
Claim 1 Symbol placement guide pin exchanging device characterized in that it is locked removably engaged to Idopin mounting portion.