JPH028664Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an apparatus for conveying parts to the next assembly position in a sequentially positioned state during automatic assembly of, for example, a cylinder head of an automobile engine. Prior Art In order to mass produce vehicle engines, automatic processing of cylinder heads using transfer machines and automatic assembly of the automatically processed cylinder heads are carried out. Normally, this automatic cylinder head assembly line has three positions: a posture regulation position where the posture of various cylinder parts such as the rocker arm is adjusted, a first assembly position where the rocker shaft is inserted into the rocker arm, and a second parts assembly position where the rocker shaft and rocker arm are fixed. is provided,
Each time the work at each assembly position is completed, the article to be assembled is transported to the next assembly position by a gate motion.

A conventional component transport device includes a first transport device that transports from an attitude regulation position to a first component assembly position, and a second transport device that transports from the first component assembly position to a second component assembly position. were provided separately and independently, and each was driven by a separate drive means. For this reason, in conventional equipment, it is necessary to provide a transport device for each assembly position, which complicates the configuration of the assembly line and its control.In addition, a drive source must be provided for each equipment, which makes the equipment The problem was that the configuration of the system became extremely complex.

OBJECTIVE OF THE INVENTION Therefore, the objective of the invention is to simplify an automatic assembly line, in particular the positioning and feeding operation of its parts, and to simplify its drive mechanism.

Summary of the invention Therefore, the present invention has been developed to
The parts are transported from the posture regulation position to the first parts assembly position and the first part is assembled without using a transport device.
The components can be transported from the first assembly position to the second component assembly position using a single transport body. The present invention also provides for holding and chucking parts in different positions using a single interlocking means and drive source.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be specifically described below based on an embodiment shown in the drawings.

The component positioning and supplying device 1 of the present invention includes a conveyor 2, as shown in the figure. An attitude regulating means 3 for adjusting the attitude of the component is attached to one end thereof. The attitude regulating means 3 includes a pair of regulating pieces 5a, 5b that regulate the front and back postures of the rocker arm 4 as a component of the cylinder head 43, and a pair of regulating side plates 6a, 6b that regulates the left and right posture of the rocker arm 4. Become. This posture regulation means 3
The working position corresponds to the posture regulation position S1 of the assembly line located at the end of the belt conveyor 34. Note that a stopper 40 is provided at this attitude regulation position S1.

A fork drive shaft 10 is further slidably held by a bearing 9 on one end side of the carrier 2. This fork drive shaft 10 includes:
As shown in FIGS. 1 and 2, a fork 11 is fixed, and the forked tip of this fork 11 has two horizontal rods in order to place and hold the lower surface of the rocker arm 4. A pin 12 is fixed with a nut or the like.

On the other hand, on the other end side of the carrier 2, there is a pair of regulating plates 15a and 15b that regulate both left and right ends of the rocker arm 4.
is fixed. And this regulation plate 15a,
15b, a forked holding claw 17 is fixed to the carrier 2 for holding down the rocker arm 4 at the first component assembly position S2.

On the other hand, the carrier 2 further includes a chuck pawl drive shaft 8 slidably supported by a bearing 7. A cam surface 13 consisting of two inclined surfaces is formed at a predetermined position of the chuck pawl drive shaft 8, as shown in FIG. On the other hand, a sleeve 14 is fixed to the carrier 2, and a rod 16 is slidably inserted through the sleeve 14 in a direction intersecting the chuck pawl drive shaft 8. A biasing spring 16a is housed in the sleeve 14, and the spring pressure biases the rod 16 in a direction in which its cam follower surface 18 is always brought into contact with the cam surface 13 of the chuck pawl drive shaft 8. . Note that one end of this rod 16 corresponds to a limit switch 41 for checking the check. Further, a chuck pawl 19 is fixed to the other end of the rod 16 with a nut or the like. A fixing claw 20 corresponding to the chuck claw 19 is fixed to the lower end of the sleeve 14. Note that these fixing claws 20 and chuck claws 19 constitute a chuck means, and are located at the first component assembly position S2 of the assembly line, that is, the hole 4 of the rocker arm 4.
This corresponds to the assembly position for inserting the rocker shaft 21 into the first part assembly position S2, as shown in FIG.
Three mounting tables 22 and two positioning pins 23 are provided. This positioning pin 23 corresponds to a positioning hole 24 attached to the lower surface of the carrier 2.

Incidentally, the operations of the fork 11 provided on the posture regulating means 3 and the chuck pawl 19 are interlocked by a driving means 27. As shown in FIG. 3, this drive means 27 is comprised of a chuck pawl drive shaft 8, a fork drive shaft 10, an interlocking arm 25 and a cylinder 26 for regulating the sliding movement of these. The interlocking arm 25 is rotatably supported at its center by a shaft 28 fixed to the carrier 2, one end of which is connected to the groove 29 of the fork drive shaft 10, and the other end of which is connected to the chuck pawl drive shaft 8. are engaged with the respective grooves.
An elongated hole 25a is bored in the interlocking arm 25 at a position approximately midway between the end of the fork drive shaft 10 and the shaft 28, and the elongated hole 25a has a hole formed integrally with the drive shaft 33 of the cylinder 26. The shaft 31 of the joint 32 is engaged. This cylinder 26 is attached by a bracket 35 attached to the side end of the carrier 2.

The movement of the drive means 27 is detected by the dogs 36, 37 of the chuck pawl drive shaft 8 and the corresponding limit switches 38, 39.

Function of the invention Next, the function of the above-mentioned component positioning and supplying device 1 will be explained.

The carrier 2 performs a so-called gate motion movement by repeating vertical movement and horizontal movement in the raised position, and moves the rocker arm 4 as a component from the posture regulation position S1 to the first component assembly position S2. , and then moved to the final second component assembly position S3. During this time, the rocker arm 4 is held at the posture regulation position S1 at a predetermined interval and in a correct posture, and is combined with the rocker shaft 21 at the first parts assembly position S2, and then the rocker arm 4 and the rocker shaft 21 in this combined state are is assembled into the cylinder head 43 at a predetermined assembly position.

First, the three rocker arms 4 are placed in the posture regulation position S1 by the belt conveyor 34 in a state where they are lined up in parallel.
There, it hits a stopper 40 and stops. On the other hand, the three rocker arms 4 transported from the regulation position S1 are placed on the mounting table 22 at the first component assembly position S2. In this state,
When the carrier 2 descends from above the attitude regulation position S1 and the first component assembly position S2, the three rocker arms 4 at the attitude regulation position S1 are guided by the pair of regulation pieces 5a, 5b and regulation side plates 6a, 6b, By coming into contact with them, they are regulated at predetermined intervals and in a correct posture. At the same time, the rocker arm 4 on the mounting table 22 similarly moves the pair of regulating plates 15a, 15b and the restraining claw 1.
7, the rocker shaft 21 is set in a state suitable for insertion and accurately positioned. In this state, the rocker shaft 21 is inserted into the hole 4a of the rocker arm 4 in a skewered state by a rocker shaft insertion device (not shown).

During the above operation, the cylinder 26 moves the fork 11 by retracting its drive shaft 33.
is moved backward, and the chuck claw 19 is separated from the fixed claw 20 to be in an open state.

However, once the rocker shaft 21 is inserted into the rocker arm 4, the cylinder 26 advances its drive shaft 33, imparting a clockwise rotational movement to the interlocking arm 25 in FIG. At this time,
The fork drive shaft 10 moves to the left in FIG.
Insert it below.

At the same time, when the chuck pawl drive shaft 8 moves, the rod 16 is urged by the biasing spring 16 and slides on the cam surface 13 with its cam follower surface 18, moving to the left in FIG. 19
The locking shaft 21 is held between the locking shaft 21 and the corresponding fixed claw 20. This holding state is detected by the limit switch 41.

After doing this, the carrier 2 rises, then moves toward the second component assembly position S3, and descends again. At this time, the rocker arm 4 supported by the fork 11 rests on the mounting table 22 at the first component assembly position S2. Further, the combined rocker arm 4 and rocker shaft 21 are sent to the next step, that is, the second component assembly position S3. When the carrier 2 descends, the positioning hole 24 of the carrier 2 fits into the positioning pin 23 and is accurately positioned, so the rocker arm 4 in the supplied state, the rocker arm 4 and the rocker shaft 21 in the combined state are
Accurately positioned at the assembly position. and,
At the second component assembly position S3, the combined rocker arm 4 and rocker shaft 21 are
It is attached onto the cylinder head 43 using an automatic screw tightening machine 42 or the like.

Thereafter, the conveyor 2 rises again, returns to the previously described position regulation position S1 and first component assembly position S2, and repeats the same operation again.

Effects of the invention In this invention, parts at two positions are simultaneously fed to the next position by the gate motion of the transport body, so the efficiency of transporting parts is high, and the transport movement is the movement of one transport body. Since the control is performed by Furthermore, since the holding of parts at the posture regulation position and the support or gripping of these parts at the position of combining two parts are performed by one interlocking cantering means, only one driving source is required. The driving part can be simplified and its periodic control can be ensured.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing the component positioning and feeding device of the present invention, Fig. 2 is a side view showing the arrangement of the forks in Fig. 1, and Fig. 3 is a bottom view of Fig. 1; FIG. 4 is a cross-sectional view of the main part of the chuck shown in FIG. 1. DESCRIPTION OF SYMBOLS 1... Parts positioning and supply device, 3... Posture regulating means, 8... Chuck claw drive shaft, 10...
...Fork drive shaft, 12...Pin, 19...
...Chuck claw, 20... Fixed claw, 25... Interlocking arm, 26... Cylinder, 27... Drive means.

Claims (1)

[Scope of utility model registration request] A carrier disposed on an assembly line having at least a part attitude regulation position, a first part assembly position, and a second part assembly position, and sequentially moving from the attitude regulation position to the first and second assembly positions. , an attitude regulating means disposed on the conveying body to adjust the attitude of the component by coming into contact with the parts, and a part disposed in the vicinity of the attitude regulating means so as to be movable forward and backward on the conveying body and holding and releasing the parts by advancing and retreating movements. a holding means, a chuck means disposed on the conveying body at a predetermined distance from the attitude regulating means and chucking and anti-chucking the parts by opening and closing operations, and two drive shafts provided on the conveying body so as to be movable forward and backward. one driving means driven by an interlocking arm to apply a holding action to the component holding means and a chuck action to the chuck means at the same time, and to give a releasing action to the component holding means and an anti-chuck action to the chuck means at the same time; A parts positioning and supplying device comprising: