JPH0123255B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a parts supply device that automatically supplies parts to appropriate locations.

(Background Art) The present applicant has previously applied for a press-fitting device in Japanese Patent Application No. 57-218932, and the present application relates to a device for feeding parts to be press-fitted to the previous press-fitting device. Conventionally, this type of press-fitting equipment, etc. has been dedicated to one model, and the parts supplying equipment that supplies parts to it has also been configured with different specialized structures depending on the size of parts, number of parts, part supply location, etc. The model was unsuitable for small-volume production.

(Object of the Invention) The present invention has been devised in view of the above circumstances, and the purpose of the present invention is to ensure automatic supply of parts and to replace only specific parts for each model. The purpose of the present invention is to provide a parts supply device suitable for high-volume, low-volume production.

(Structure of the Invention) In order to achieve the above object, the present invention provides a movable body on a base so as to be movable in a direction intersecting the direction of the parts supply location, and a pallet that is conveyed on the base and can be freely engaged with and detached from the movable body. a distribution plate is provided in the pallet so as to be movable in the direction of the parts supply location, and the distribution plate is formed with an engagement groove that is open at one end in the intersecting direction and is capable of freely receiving and holding parts in accordance with the parts supply location; A chute for vertically aligning the parts is installed in the vicinity of the distribution plate in the pallet, and a pushing member for pushing the parts into the engagement groove is installed in the chute, and when the movable body and the pallet are engaged, the chute is installed in the vicinity of the distribution plate. The movable body is characterized in that the movable body is provided with a drive means that engages to move the distribution plate toward the parts supply location, and a drive means that engages with the extrusion member and operates the extrusion member.

(Embodiment) Hereinafter, a case will be described in which a preferred embodiment of the present invention is applied to a device for supplying valve seats to a press-fitting device.

1A to 1E are schematic plan views showing the operating states of the parts supply device, FIG. 2 is a partially sectional side view of the parts supply device, and FIG. 3 is a partially sectional rear view of the same,
FIG. 4 is a partially sectional plan view of the same, and FIG. 5 is a front view of the same.

A press-fitting device 1 is used to press-fit a valve seat into a cylinder head 2 of an internal combustion engine, and in this embodiment includes eight press-fitting bars 3, which are vertically spaced apart and correspond to valve holes in the cylinder head 2.

A valve seat supply device 11 is provided near this press-fitting device 1.

The supply device 11 includes a movable body 15 on a base 12 that is movable in the lateral direction (direction perpendicular to the press-fitting direction) via guide rods 13, 13 and a cylinder 14, and rails 16, 17 are provided above and below the movable body 15. pallet 21 via these rails 16 and 17.
is provided to be movable in the lateral direction, and the lateral positioning of the movable body 15 is performed by left and right stoppers 22 and 23 whose strokes are adjustable.
Cylinders are used as 2 and 23, respectively. still,
In FIG. 3, numerals 24 and 25 are sensors for detecting the lateral position of the movable body 15.

The pallet 21 has two shoots 31, 31
and a distribution plate 34 which is incorporated between the shoots 31, 31 so as to be movable in the front and rear direction via guide rods 32, 32 and a spring 33. The operating cylinder 41, rod 43, hook 44, rail 16,
Pallet 2 conveyed onto base 12 via 17
1 is engaged with the movable body 15.

The chute 31 is connected to a chute 53 that feeds the valve seat 52 in the hopper 51, and the chute 53 on the hopper 51 side is configured to freely feed and stop the valve seat 52 downward by the operation of an operating cylinder 54. A locking arm 55 is provided.

A passage 61 extending substantially vertically is formed in the chute 31, and a bottom surface 62 is provided at the lower end of the passage 61, and the valve seats 52, . Form it so that it stacks up.

In the embodiment, the distribution plate 34 is provided with eight engaging grooves 71 on the left and right, respectively, corresponding to the valve holes of the cylinder head into which the valve seats 52 are fitted.
The engagement grooves 71 are formed adjacent to each other, and each engagement groove 71 is open to the chute 31 side. The height of the core of each of the engagement grooves 71 is made to match the height of the core of each of the press-fit bars 3,
In addition, a locking arm 73 is provided near each engagement groove 71 and is biased by a spring 72 so as to lock the fed valve seat 52 in the engagement groove 71 as shown in FIG. The arm 73 is pivotally supported on the distribution plate 34 by a pin 74, and a recessed groove 75 that is open laterally is formed on the rear side of the distribution plate 34, as shown in FIG. In the embodiment, the left engagement groove 71 engages the valve seat for the exhaust valve, and the right engagement groove 71 engages the intake valve seat.

In the chute 31, two engagement grooves 71, 71 which are close to each other are communicated with two valve seats 52, 52 at a height close to the height of the engagement grooves 71, 71 in the passage 61, and the valve seats 52, 52 are communicated with each other. sheet 52
communication paths 81, 8 that can freely feed the water to the engagement groove 71 side.
1, and each communication path 81 is formed to extend vertically with an inclination or horizontally depending on the height of the engagement groove 71 and the position of the valve seat 52 corresponding to this height.

As shown in FIGS. 6 and 7, a lid 82 is provided at the portion of the communicating path 81 that opens into the path 61. As shown in FIGS. The lid 82 is formed to be able to open and close toward the distribution plate 34 using a pin 83 as a fulcrum, and a coil spring 84 urges the lid 82 in the closing direction so as to be continuous with the inner side surface of the passage 61.

Further, a push-out plate 91 for pushing out the valve seat 52 in the passage 61 toward the distribution plate 34 is inserted into the chute 31 via a guide rod 92 so as to be movable laterally.

The extrusion plate 91 has four extrusion pieces 93,...
The thickness of each pushing piece 93 is formed to be smaller than the thickness of the passage 61 and the communication passage 81, as shown in FIG. However, a rod 94 is fixed in the vertical direction near the outer end of the extrusion plate 91.

The distribution plate 34 is moved back and forth by the operation of an actuation cylinder 101 fixed to the movable body 15, and a locking part 102 is attached to the rod end of the actuation cylinder 101, so that when the pallet 21 is carried in, it is inserted into the groove 75. The locking portion 102 is engaged to cause the engagement groove 71 and the communication path 81 to communicate with each other during the contraction operation of the operating cylinder 101.
In addition, 103 and 104 in FIG. 2 are the operating cylinders 10.
1, that is, the sensor detects the front and rear positions of the distribution plate 34.

The movable body 15 includes a link 112 whose one end 111 is pivotally supported by the movable body 15, a guide rod 113,
A bracket 115 is provided which moves back and forth by the operation of an actuation cylinder 114 via 113, and the bracket 1
15, there are two actuating cylinders 1 corresponding to the left and right extrusion plates 91, 91 as shown in FIG.
16 is fixedly installed, and a branch piece 118 is provided protrudingly along the rod 117 of each operating cylinder 116. An arm 122 is pivotally supported on the support piece 118 via a shaft 121, and the base of the arm 122 and the rod 1
17 through a link 123, and the arm 1
22 is formed with an open groove 124 which can be engaged with the rod 94 of the distribution plate 34. When the bracket 115 is advanced with the rod 117 of the actuating cylinder 116 extended, the groove 12
4 and the rod 94, and when the operating cylinder 116 is contracted, the arm 122 and the groove 1
24, the push-out plate 91 is moved toward the distribution plate 34 via the rod 94, and the valve seat 52 is pushed out into the engagement groove 71. Incidentally, reference numeral 125 in FIG. 9 is an engagement pin fixed to the bracket 115 for engagement with the pallet 21.

Next, the operation of the device will be explained. In the embodiment, the valve seat 52 for the intake valve is press-fitted into the bar 3.
A case will be described in which the valve seat 52 for the exhaust valve is supplied to the press-fit bar 3b.

First, the movable body 15 is moved by the actuation cylinder 14 and positioned by coming into contact with the left stopper 22, and then the bracket 1 is moved by the actuation cylinder 114.
15 is moved backward, the pallet 21 is carried in with the operating cylinder 101 in the contracted state and the operating cylinders 116, 116 in the extended state, and the engagement between the hook 44 and the pallet 21 is released. When the pallet 21 is carried in, the groove 75 and the locking portion 102 are engaged with each other, and a schematic plan view in this state is shown in FIG. 1a.

Next, as shown in FIG. 1b, the actuating cylinder 114
The actuating cylinder 1 is integrated with the bracket 115.
16 and 116 are advanced to engage the rod 94 of the extrusion plate 91 with the groove 124 of the arm 122. At this time, the engagement pin 125 engages with the engagement hole 125a of the chute 31 as shown in FIG.
The movable body 15 and the pallet 21 are engaged. Movable body 1
5 and the pallet 21, the chute 53,
53 and 31, 31 are connected, respectively, and the core of each engagement groove 71, . . . on the right side of the distribution plate 34 is matched with the core of each pressure bar 3a, .

Next, the locking arms 55, 55 are oscillated by the actuating cylinders 54, 54 to feed the valves 52, . ...stop feeding.

Next, as shown in FIG. 1c, the right-hand operating cylinder 116 is contracted, and the push-out plate 91 is moved toward the distribution plate 34 via the arm 122.
Valve seats 52 for intake valves,... are connected to communication passages 81,
... to each engagement groove 71, and after the valve seat 52 is supplied, the operating cylinder 116 is operated to return to its original state.

Next, as shown in FIG. 1d, the operating cylinder 101
The distribution plate 34 is advanced by being extended, and the press-fitting bars 3a are inserted into the valve seats 52 in each engagement groove 71.
be inserted.

Next, as shown in 1e, the operating cylinder 14 is contracted to move the distribution plate 34 to the left together with the movable body 15. By this movement, the valve seats 52, . . . are separated from each engagement groove 71, eight valve seats 52 are set on each press-fitting bar 3a, and the operation of supplying valve seats 52 for intake valves is completed. In this case, movement of the movable body 15 to the left is restricted by a stopper 22 whose stroke is different from that when the pallet 21 is carried in.

After supplying the valve seat 52 to the press-fitting bar 3a, the operating cylinder 101 is compressed to close the distribution plate 3.
4, and horizontally rotate the press-fitting device 1 by 180 degrees, so that the valve seat press-fitting bar 3b for the exhaust valve faces the supply device.

Valve seat 52 to press fit bar 3b for exhaust valve
The supply is carried out in the same manner as described above. First, Figure 1b
Contrary to the state shown in , the movable body 15 is positioned by the actuating cylinder 14 and the stopper 23, and the center of the left engagement groove 71 and the center of the press-fit bar 3b are aligned. Next, operate the left operating cylinder 116 to push out the chute 31 with the push-out plate 91.
The inner valve seat 52 is fed into the engagement groove 71.
The distribution plate 3 is then moved by the actuating cylinder 101.
4 and press-fit the bar 3 into the valve seat 52.
b, move the distribution plate 34 to the right together with the movable body 15 by operating the actuating cylinder 14, release the valve seat 52 from each engagement groove 71, set it on the press-fit bar 3b, and set the exhaust valve The operation of supplying the valve seat 52 is completed. The above operation order is memorized and the valve seat 5 is supplied by the supply device 11.
2 is automatically supplied to the press-fitting device 1.

Therefore, according to this embodiment, the extrusion plate 91
Since the valve seat 52 corresponding to the supply location is pushed out from the chute 31 and fed to the distribution plate 34, the valve seat 52 can be reliably supplied even if the intervals between the respective engagement grooves 71 are irregular, and the distribution The supply from the plate 34 to the press-fitting bar 3 is also carried out by moving the distribution plate 34 itself laterally to form the engagement groove 71.
Since the valve seat 52 is separated from the open end of the valve, the process is carried out smoothly and reliably.

Furthermore, even if the model of the cylinder head 2 is different and the size, supply location, number, etc. of the valve seats 52 to be supplied are changed, it is only necessary to replace the chute 31, the distribution plate 34, and the extrusion plate 91. The supply device 11 can be easily adapted to many different types.

In the embodiment, the engagement grooves 71 are provided on both sides of the distribution plate 34, but they may be provided on only one side, and the number of valve seats 52 to be pushed out, the shape of the push pieces 93, etc. correspond to the supply location. The parts to be supplied are not limited to the valve seat 52, and the supply device 11 can be applied to various parts.

(Effects of the Invention) As is clear from the above explanation, according to the present invention,
It exhibits excellent effects such as being able to automatically and reliably supply parts to a parts supply point, being compatible with various models by replacing specific parts, and being suitable for low-volume production of multiple models.

[Brief explanation of drawings]

1A to 1E are schematic plan views showing the operating state of the parts supply device, FIG. 2 is a partially sectional side view of the parts supply device, and FIG. 3 is a partially sectional rear view of the same;
Fig. 4 is a partially sectional plan view of the same, Fig. 5 is a front view of the same, Fig. 6 is a partially sectional front view of the distribution plate portion, Fig. 7 is a partially sectional plan view of the same, Fig. 8 is the seventh
FIG. 9 is a sectional view taken along the line ``--'' and FIG. 9 is a plan view of the driving portions of the distribution plate and extrusion plate. In the drawing, 1 is a press-fitting device, 2 is a cylinder head, 3 is a press-fitting bar, 11 is a parts supply device, 14
15 is an operating cylinder, 15 is a movable body, 21 is a pallet, 31 is a chute, 34 is a distribution plate, 52
1 is a valve seat, 71 is an engagement groove, 91 is an extrusion plate, and 101, 114, and 116 are operating cylinders.

Claims (1)

[Claims] 1. In a parts press-fitting device having a plurality of press-fitting bars, in which a plurality of parts are simultaneously supplied to the press-fitting bars, this device has a movable body that moves in a direction perpendicular to the axial direction of the press-fitting bars with respect to a base fixed to a floor etc. A pallet conveyed on a base can be attached to and detached from this movable body, and a chute for receiving parts from the hopper is attached to the pallet, and a distribution plate that moves forward and backward toward the press-fitting bar is incorporated. , this distribution plate has an engagement groove with an open end at one end through which parts in the chute are supplied by an extrusion member at a position corresponding to the press-fitting bar, and further includes the movable body, the extrusion member, and the distribution plate. A parts supply device characterized in that the parts supplying device is operated independently by different drive sources.