JPH02167631A - Feeding device for parts - Google Patents

Abstract

PURPOSE:To perform a part assembly work at constant timing at all times by continuously feeding parts made in one set by plural pieces to a part assembling machine, in case of assembling to a work a part of the cam cap, etc., of an automobile engine. CONSTITUTION:A pallet C on which a part is placed is step-piled inside a cassette case D and aligned efficiently in a small space by circulating this cassette case D so as to draw a rectangular locus between a part carry-in position F and part chuck position (e). Also, the pallet C of the uppermost step is pulled out of the cassette case D by a part feeding device (c) and the cassette case D is returned to a part carry-in position (a) in the state of locating at the part chuck position (e). And yet, this pallet C is thereafter returned into the pallet storing part of the lowermost step of the succeeding cassette case D which is transferred to a part feeding position (c) and the pallet C is made to be placed at the part chuck position (e), even its exchanging time at the front of the pallet pulling out device of the cassette case D.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for assembling a set of a plurality of parts onto a single workpiece, using a parts assembling machine used for the work. The present invention relates to a parts supply device that is capable of continuously supplying a set of a plurality of parts.

[Conventional technology]

To support the rocker shaft of an automobile engine, a plurality of cam caps, for example, five cam caps, are assembled into a cylinder head. During manufacturing, the five cam caps are assembled in order to accurately align the axes of each cam cap. Processing is carried out simultaneously with each camp as one group. Therefore, even when assembling this cam cap to a cylinder head using a parts assembling machine, one set of five cam caps processed at the same time is supplied to the parts assembling machine all at once. It is necessary to assemble the set of cam caps onto the cylinder head so that the set does not collapse.

By the way, if a set of 5 cam camps that have been processed simultaneously are supplied to the parts assembling machine all at once, even when the cam camps that have been processed are transported to the parts assembling machine, the cam Caps must always be kept in sets of five. Therefore, it is very difficult to automatically feed a set of processed cam camps to a parts assembling machine using a parts feeder or the like without destroying the set.

For this reason, conventionally, when supplying cam caps to a parts assembling machine, a worker manually arranges a set of five processed cam caps on a pallet. After arranging multiple sets of cam caps on this pallet, this pallet is set on a parts assembling machine, and after this, the parts assembling machine is arranged on the pallet.
One set of cam caps is sequentially chucked and assembled at a predetermined location on the cylinder head.

[Problem to be solved by the invention]

As mentioned above, one set of cam caps of 5 fA,
If the cam caps are aligned one by one on the pallet manually, the worker must be constantly lining up the cam caps on the pallet while the parts assembling machine is operating. There was a problem that a dedicated worker was required. In addition, a large number of pallets are prepared in advance, and while the parts assembling machine is stopped, a worker lines up a set of 5 fl & I cam caps on each pallet. Once the machine starts operating, it may be possible to automatically supply these pallets to the parts assembling machine one after another, thereby eliminating the need for a worker dedicated to constantly supplying cam caps while the parts assembling machine is in operation. There was a problem in that a huge amount of space was required to arrange the pallets in advance near the parts assembling machine.

[Means to solve the problem]

A pirn, which is made up of a plurality of parts supply devices, has a plurality of pallets in the vertical direction on which the plurality of sets are placed in an aligned state, and a baren I/storage section for storing the pallets in a slidable manner. , by sliding the cassette case in which a pallet is stored in each storage part and the cassette case in a rectangular trajectory, the cassette case is moved to the parts loading position provided on the trajectory, the first intermediate A cassette conveyor that circulates through four positions: a parts supply position, and a second intermediate position, and a pallet in a cassette case located at the parts carry-in position is sequentially pulled out,
After parts are supplied onto the pallet, parts are transported back into the cassette case using a parts loading device that has multiple stages of pallet storage sections in the vertical direction, and the pallet inside the cassette case is lifted by lifting the cassette case at the parts supply position. , Sequentially, a cassette lift device is used to position the pallet on the same plane as the parts chuck position provided above the front surface of the parts supply position, and the pallet, which is on the h-plane with the parts chuck position, is pulled out from the cassette case and placed at the parts chuck position. and a pallet pull-out device for returning the pallet into the cassette case when the parts on the pallet positioned at the position center and the parts chuck position are transferred to an arbitrary position, and the parts supply device , pull out the pallets one by one from the pallet storage section at the bottom of the cassette case, and then pull out the pallet from the top pallet storage section.Then, the cassette case can be moved to the parts loading position without returning the pallet to the pallet storage section. The pallet that has been pulled out is then stored in the lowermost pallet storage section that has been opened in advance of the cassette case that is sent to the parts supply position. It is.

[Effect]

As mentioned above, by stacking pallets on which parts are placed in a cassette case and circulating this cassette case in a rectangular trajectory between the parts loading position and the parts chuck position, A large number of pallets on which parts are placed can be efficiently arranged in a small space, and at the parts supply position, the uppermost pallet is pulled out of the cassette case and positioned at the parts chunk position, and the cassette case is By returning the pallet to the parts loading position and then returning it to the bottom pallet storage section of the next cassette case that will be transported to the parts supply position, it is possible to replace the cassette case in front of the pallet drawer. A pallet with parts placed thereon is always located at the parts chuck position.

〔Example〕

Hereinafter, specific embodiments of the present invention will be described with reference to FIGS. 1 to 15.

FIG. 1 shows an overview of the present invention, in which (A) shows a parts assembling machine and (B) shows a parts assembling machine.
This is a parts supply device installed in the front of (A).

This parts supply device (B) has multiple sets of cam caps (
A pallet (C) that is made up of two pallets (α) in an aligned state, a cassette case (D) that can store the pallets (C) vertically in multiple stages (nine stages in this example), and this cassette case ( D) by sliding it along a rectangular trajectory, the cassette case can be moved to the parts loading position (A) and the first intermediate position (
(b), a cassette conveyor (E) for sequentially positioning the parts over the parts supply position (c) and the second intermediate position (d), and a cassette case (E) located above the parts carrying position (a).
By lifting the parts loading device (F) for loading the CamCamp (α) onto the pallet (C) in D) and the cassette case located at the parts supply position (C), the balent inside the cassette case is Sequentially,
A cassette lift device (G) for positioning it on the same plane as the parts chuck position (E) provided above the front of the parts supply position (C), and a pallet (G) located on the same plane as the parts chuck position (E). C) and a pallet pull-out device (H) for positioning the pallet on the parts chuck position (E).

As shown in FIG. 2, the barrel l-(C) is formed of a substantially rectangular flat plate, and its surface has the following features:
5 (Protruding positioning pins (1) (1) for lining up multiple sets (5 sets in this example) of the 11 sets of IJi cam caps (α) on the pallet (C) By fitting the through holes (β) of each cam cap (α) into these positioning bins (1), (1), etc., the cam caps (α) can be held in an aligned state. In addition, an opening (2) is formed in the center of one end of the pallet (C) to serve as a handle when manually moving the ballen I-(C) in the horizontal direction. At the center of the end, there is a pallet drawer (C) for pulling out the pallet (C).
H) is provided with a cutout recess (3) that serves as a handle when pulling out from the cassette case (D).

The cassette case (D), which stores the pallets (C) in a maximum of nine stages in the vertical direction, has a shape shown in FIGS. 3 to 5. In the same figure, (10> is a rectangular bottom plate that is one size larger than the pallet (C), and (11> is a bottom plate (10
) A base frame fixed around the surface of (12) (12)
... are pillars installed at the four corners of the base frame (11), (13a
) (13b) (13c) are each column (12
) (12)...A horizontal frame bridged in between, and each of the above members forms the skeleton of the cassette case (D). (14) (14)... is a cassette case (
D) Base frame (11) and horizontal frame (13) located in the longitudinal direction
b) Auxiliary frame arranged vertically between (13c), (15)
(15)... are rollers attached to the inner peripheral surface of each auxiliary frame (14) in a predetermined number (9) at equal intervals, and due to the action of these rollers (15) (15)... The pallet (C) on which the cam cap (α) is placed can be inserted into the cassette case (D) while sliding it horizontally.
Nine stages of pallet storage portions (16) for storing the barrels (C) are formed in the vertical direction.

In addition, there is a front opening (17a) and a rear opening (17b) that serve as pallet loading and unloading sections for the cassette case (D).
), pallets (C) (C)... stored in the cassette case (D) are stored in the cassette case (D), respectively.
) is attached with a shutter (18) to prevent it from sliding out of the cant case (D) during movement. As shown in FIG. 3, this shutter (18) is rotatably supported at the ends of the base frame (11) and the horizontal frame (13a) in the transverse direction via pivots (19) and (20). support plates (21) (22) and this support plate (2
1) A shutter plate (25) connected to (22) via pins (23) and (24). When the support plates (21) and (22) supporting the shutter plate (25) are in a horizontal state as shown by the solid line in Fig. 9 notched recesses (25a, ) (25a)・
... are located in front of each pallet (C) stored in the cassette case (D,), respectively, and the pallet (C)
When the supports 1ffl (21) and (22) rotate downward, the shutter plate (25) is housed in the cassette case (D). It is located in front of the pallet (C) and is designed to prevent the pallet (C) from slipping out of the cassette case (D). In addition, the above support plate (
21) Rotate (22) and remove the shutter plate (25).
As shown in Fig. 6, the means for opening and closing the
A gear part (19a) is integrally formed in the rear part of the pivot (19) supporting the support 1ffi (21) located below, and the gear part (19a) is provided above the bottom plate (lO).
), the rod is constantly pressed downward by the elastic force of the spring (27), and its lower end reaches into the through hole (10a) provided in the bottom plate (10). Store (26). The rod (26) is normally pressed downward by the pressing force of the spring (27), and in this state, the teeth (26) of the rod (26)
a) with a gear part (19a) meshing with the pivot (19);
The support plate (21) supported by is in a downwardly rotated position, and the shutter plate (25) is in a closed state. In addition, the opening pin (50) described later in the through hole <10a) is (
88) is inserted, the rod (26) slides upward against the pressing force of the spring (27), and the gear part (1) meshing with the teeth (26a) of the rod (26).
The pivot (19) having 9a) rotates counterclockwise in the figure, and the support plate (21) supported by the pivot (19) rotates to a horizontal position so that the shutter plate (25) opens. It is. Further, on the back surface of the bottom plate (10) mentioned above, as shown in FIG.
(34c) and (34d) are formed so that two guide grooves (10b) and (10c) that fit therein are perpendicular to each other, and a cassette case (D) is provided at approximately the center of the four sides on the back of the bottom plate (10). Cassette conveyor (E)
A locking claw (48a) to be described later for pulling in a predetermined direction
) (48b) (48c) (48d) are provided with recesses (10d) (10e) (10f) (Log) that are engaged with each other, respectively.

Figures 7 to 1O show the cassette case (D),
Cassette conveyor (E) for moving along a rectangular trajectory from parts loading position (a) to first intermediate position (b) to parts supplying position (c) to second intermediate position (d)
This shows that. In the figure, (30> is the substrate, (
31) (31)... is a virtual plane (conveyor surface) set on the board (30) (to) the cassette case (D)
These are a large number of ball supports protruding from the base plate (30) so that the ball can move in parallel. This ball receiver (31) is the eighth
As shown in the partially enlarged side view of the figure, the receiver is a stand (32), and the receiver is a ball (32) rotatably supported on the upper end of the stand (32).
3), and by supporting the back side of the bottom plate (10) of the cassette case (D) with this ball (33), the cassette case (D) is moved to the conveyor surface (towards the cassette conveyor (E)). (34a) (34a)
〉... is a first guide roller (34b) that serves as a guide when sliding the cassette case (D) in the direction of arrow 1 (from the parts loading position (A) to the first intermediate position opening)
(34b)... is a second guide roller that serves as a guide when sliding the cassette case (D) in the direction of arrow ■ (from the first intermediate position (b) to the parts supply position (c)); (34c) ( 34c) ... is the third guide that serves as a guide when sliding the cassette case (D) in the direction of arrow m (from the parts supply position (c) to the second intermediate position (d)).
The guide rollers (34d) (34d) move the cassette case (D) in the direction of the arrow ■ to the second intermediate position (
This is a fourth guide roller that serves as a guide when sliding the parts from (d) to the parts loading position (a)). The first to fourth guide rollers (34a) (34b) (3
4c) and (34d) project onto the conveyor surface of the cassette conveyor (E) when necessary, and these projecting guide rollers are connected to the cassette case bottom plate (10).
Guide grooves (10b) (10c) provided on the back side of
The cassette case (D
) to restrict the sliding direction to a predetermined direction. Also, move each guide roller to the conveyor surface only when necessary.
The following methods are used to project upward. That is, each guide roller, for example, the first guide roller (34a) (34a)..., respectively, as shown in FIG. It is rotatably attached to the upper end surface of an arm (372) which is rotatably supported through the
All are connected by one connecting rod (38a). When the first guide roller (34a) is located below the conveyor surface (to), the connecting rod (38a)
a) to the right in the figure by the cylinder (39a) connected to its end, and each arm (37a) connected to the connecting rod (38a) counterclockwise to the position shown by the dotted chain line in the figure. By rotating the arm (3
The first guide roller (34a) located at the tip of 7a)
is located below the conveyor surface. If the first guide roller (34a) is to protrude above the conveyor surface (towards), slide the connecting rod (38a) in the direction shown in the figure, and move each arm (37a) as shown in solid line in Figure 9. By rotating the first guide roller (34a) clockwise until the first guide roller (34a) located at the tip becomes horizontal,
The first guide roller (34a) is made to protrude above (towards) the conveyor surface. Note that the above explanation is based on the first guide roller (3).
4a), but the second to fourth guide rollers (
34b), (34c), and 34d are also designed to protrude above the conveyor surface when necessary by the same method as described above, so their explanation will be omitted. In addition, (40a) in the figure indicates the first guide roller (34a) (
34a)... is a first slider for pulling the cassette case (D) in the direction of the arrow 1; (40b') is a second guide roller (34b);
) (34b ”)... is a second slider for pulling the cassette case (D) in the direction of arrow ■, and (40c) is a third guide roller (34
c) A third slider for pulling the cassette case (D) guided by (34c) in the direction of arrow ■, (40d) a fourth guide roller (34d), (34d)... This is a fourth slider for pulling the cassette case (D) in the direction of arrow ■, which is guided by. As shown in FIG. 10, the first slider (40a) is slidably supported by a bracket (41a'') extending in the sliding direction and a guide rod (42a) supported by the bracket (41a). , guide rod (
A female screw (44a) is incorporated, which screws into a male screw (43a) arranged parallel to the male screw (42a).
43a) and the female thread (44a) constitute a ball screw. Then, by rotating the male screw (43a) in the forward or reverse direction via the motor (45a) and pulleys (46a) and (47a), the first slider (4
0a) is moved forward in the direction of the arrow 1 or retreated in the opposite direction. Also, the first slider (4
As shown in FIG. 10, on the upper rear end side of 0a), there is a locking claw (48a) whose tip (48a') engages with a recess (10d) provided on the back surface of the cassette case bottom plate (10).
is rotatably supported via a pin (49d).

Then, insert the tip (48a') of this locking claw (48a) into the cassette case (D) located at the parts loading position (A).
) by sliding the first slider (40a) in the direction of arrow I while engaging the recess (10d) provided in the bottom plate (10) of the cassette case (D) from the parts loading position (a). It is designed to be transferred to the first intermediate position (b). Furthermore, when the first slider (40a) is moved backward after the cassette case (D) is transferred to the first intermediate position (B), the tapered surface provided at the rear of the tip (488') of the locking claw (48a) (48a'') comes into contact with the back surface of the cassette case bottom plate (10), thereby causing the locking claw (48a''
) rotates clockwise, the tip (48a') of the locking pawl (48a) fits into the recess (10d) of the bottom plate (10).
naturally separate from. Note that the above explanation applies to the first slider (4
0a), but the second to fourth sliders (40
b) (40c) (40d) also has the same structure as the first slider (40a), so a description thereof will be omitted. Also, the seventh image is a plan view of the cassette conveyor (E).
In order to make it easier to understand the structure, the figure shows guide rods (42a) (42b) (42c) (42d) that serve as guides for the first to fourth sliders (40a) to (40d'').
) are not shown. In addition, (50) in Fig. 7 shows that when the cassette case (D) is located at the parts loading position (A),
Rear opening (17b) of cassette case bottom plate (10)
This is an opening pin for opening the shutter plate (25) provided on the rear opening (17b) side of the cassette case (D) by entering the through hole (10a) provided in the cassette case (D).

Figures 10 and 11 show the above-mentioned cassette conveyor (
When the cassette case (D) is located at the parts loading position (A) in E), pull out the empty pallets (C) stored in the cassette case (D) one by one from the cassette case (D), and This figure shows a parts loading device (F) used to place the cam caps (α) in an aligned state on the pulled-out pallet (C). In the figure, (60) is a base, and (61) is a main body of the device that moves up and down by a cylinder (62) built into the base (60).

This device body (61) has a cylinder (62) rod (
The bottom plate (26) is connected to the bottom plate (63) and has guide rods (64) (64) protruding from the bottom to guide the vertical movement of the device body (61), and the bottom plate (65) is arranged around the top surface. The base frame (66), the pillars (67) erected at the four corners of the base frame (66) (67)... and the pillars (67)
(67) Horizontal frame bridged between the upper ends (68)
The skeleton is formed by (69). (70)
(70)... is an auxiliary frame arranged vertically between the base frame (66) and horizontal frame (69) located in the longitudinal direction of the main body (61); (71) (71)... is Each auxiliary frame (
Eight rollers are installed at equal intervals on the inner peripheral surface of the machine body (70), and the action of these rollers (71) (71) stores the pallet (C) inside the device body (61). The pallet storage section (72) is arranged in eight stages in the vertical direction.

Then, the front opening (61a) of the device main body (61) is made to face the rear opening (17b'') of the cassette case (D) on the parts loading position (a), and the pallet storage sections provided on both sides are arranged. (16) After matching the heights of (72), the worker extends his hand and removes the cassette case (D).
If you pull out the inner pallet (C) from the cassette case (D), this pulled out pallet (C) will be attached to the main body of the device (6
1) while being guided by the rollers (71) (71)...
drawn inside. Then, a worker manually lines up the cam caps (α) one after another on the pulled-in pallet (C). In addition, this device body (61
) cannot store 8 pallets (C), and the pallet (C) cannot be stored inside the cassette case (D).
) is stored one less, but this is because the cassette case (D) is located at the parts supply position (c), the uppermost pallet (C) is pulled out from the cassette case (D), and the parts assembly IM When held in front of (A), the cassette case (D) is returned to the parts loading position (A) in this state, and when the cassette case (D) is sent out toward the parts supply position (C), , the lowest pallet storage area (16) is left empty to ensure storage space for the pallet (C) that is still held in front of the parts assembling machine (A), and the cassette Case (D
This is because only eight pallets (C) are always stored in the space ( ). Additionally, the pallet (C) is placed on rollers (71) (71) horizontally on both sides of the device body (61).
A guide plate (7
3) (73)... is installed, and the device body (6
1) The rear opening (61b'') has a device body (61b'').
) The ballen I-(C) pulled into the rear opening (6
A stopper plate (74) is attached to prevent the stopper plate (74) from flying outward from the stopper plate (1b).
74) has eight auxiliary rollers (
75) (75)... is the installation.

FIG. 13 shows that by lifting the cassette case (D) located above the parts supply position (c) upward, the barrels l-(C) stacked in the cassette case (D) can be removed.
14 and 15 show a cassette lift device (G) for sequentially positioning the parts on the same plane as the parts chuck position (E) provided on the pallet drawer Z (H). , shows a pallet pull-out device (H) for pulling out the pallet (C) held on the same plane as the parts chuck position (E) by the cassette lift device (G) onto the parts chuck position (E). be.

In Figure 13, (80) is the cassette conveyor (E)
The base (81) is integrated with the substrate (30) of the base (
80) is a column erected above, (82) is a guide rail provided along the side surface of the column (81), and (83) is a lifting platform supported by the guide rail (82) so as to be able to rise and fall. This elevating table (83) includes a female thread (85) that engages with a male thread (84) provided along the guide rail (81), so that the two constitute a ball screw. Then, connect this male screw (84) to the support (81).
The lifting platform (83) is moved up and down by rotating it in the forward direction or in the reverse direction using a gear motor (86) installed at the upper end of the platform. (87) is a pair of arms for holding the cassette case (D), which are fixed to the lower part of the lifting table (83) so as to extend in the horizontal direction. This arm (
87) shows the conveyor surface (
It should be located lower than 〉. Then, in a state where the lifting table (83) is located at the lower end, if the lifting table (83) is raised after the cassette case (D) is located above the parts supply position (c), the cassette case (D) is raised. ) is intended to rise while being held by the arm (87). (88) is an opening pin protruding from the upper surface of one arm (87) of the pair of arms (87). When the cassette case (D) is positioned on the arm (87), this release pin (88) is inserted into the through hole (10a) provided on the front opening (17a) side of the bottom plate (10) of the cassette case (D). The cassette case (C) of the pallet (C)
D) allows for free access to and from the machine.

Note that the cassette lift device (G) moves the cassette case (D) up and down to position the pallet (C) inside the cassette case (D) in front of the pallet pull-out device (H). , by the receiver,
The position of the pallet (C) stored in the cassette case (D) can be detected, and the pallet (C) is located at the parts chuck position (E) on the cassette drawer (H).
When the pallet (C) is located on the same plane as the pallet (C), the gear motor (86) is stopped by the output signal from the light receiver, so that the pallet (C) can be positioned.

Further, the pallet pull-out device (H) that operates in conjunction with the cassette lift device 2 (G) has the shape shown in FIG. 14. In the same figure, (90) is a base, (91) is a frame formed by combining a horizontal frame (92) and a vertical bar (93) in a rectangular shape on the base (90), (94) are guide rails (59) placed on both longitudinal edges of the top surface of the frame (91).
e) A roller rotatably pivoted to the guide frame (94) in order to be slidably supported on the guide frame (94).

(96> is a guide rail bridged in the longitudinal center of the upper surface of the frame (91), (97) is a guide rail (97)
6) It is a slider arranged so as to be able to slide freely on the top, and an engagement roller (98) that engages with the notch recess (3) provided in the ball (C) can be attached to the tip of this slider (97). (99) has its lower end attached to the base (90) with the pivot (1)
a slide arm (1), which is rotatably supported via a slide arm (1
03) is a cylinder in which the tip of the rod (103a) engages with approximately the middle portion of the slide arm <99>. Then, as shown in Fig. 14--dotted chain line, the cassette case (
One of the pallets (C) stored in D) is positioned on the same plane as the parts chuck position (E) by the cassette lift device (G), and the roller (101) provided on the slider (97) , while the cylinder (10
3) and rotate the slide arm (99) clockwise in the figure, the slider (97) will move toward the frame (91).
) In order to slide the top surface to the right in the figure, the pallet (C) inside the cassette case (D) is moved by the rollers (95) (95
)..., while being guided by the parts assembling device (A), and held at the parts chuck position (E) on the upper surface of the frame (91). (104) is a positioning rod provided on the right end of the upper surface of the frame (91) in the figure, and this positioning rod (104) is always attached to the cassette due to the elastic force of the spring (105) as shown in the enlarged view of FIG. It is pressed against the case (D) side,
Further, its tip is designed to come into contact with the end surface of the pallet (C) pulled out above the parts chuck position (E) on the upper surface of the frame (91). When the pallet (C) is pulled out onto the parts chuck position (E), the tip of the shaft (104) elastically contacts the end surface of the pallet CC), so that the pallet (C) is moved to the parts chuck position (E). e) It is designed to be held in a stable state above the pallet (C) and at the same time absorb the shock applied to the pallet (C).

In the above configuration, the parts supply device (B) according to the present invention
To supply the cam cap (α) to the parts assembler (A), first, as shown in FIG.
d), the parts supply position (c), the first to third positions.
cassette cases (D), (D'), and (D") are set up. In this initial state, each cassette case (D) (D') (D") is installed.
D) In (D') (D''), leave only the topmost pallet storage section (16) empty, and empty the remaining 8 pallet storage sections (16).
In addition to storing an empty pallet (C) in 〉, an empty pallet (C) is also placed above the parts chuck position (E) of the pallet pull-out device (H).

In this state LM, first, the opening pin (50) of the cassette conveyor (E) is projected onto the conveyor surface (towards), and this opening pin (50) is moved to the first position at the parts loading position (A). By entering the through hole (10a) provided on the rear opening (17b) side of the bottom plate (10) of the cassette case (D), the rear opening (17b) side of the first cassette case (D) is inserted. Open the shutter plate (25). Next, the 8 cassettes stored in the first cassette case (D)
The pallet located at the bottom of the pallets (C) (
C) from the first cassette case (D), and then insert this pallet (C) into the first cassette case (D).
The apparatus main body (61) of the burn acid adding apparatus (F), which is located at a position opposite to the burn acid adding apparatus (F), is pulled into the pallet storage section (72) at the lowest stage. Next, a worker manually arranges a plurality of sets of five cam caps (α) on the pallet (C) stored in the parts carrying device (F). At this time, the device main body (61) having the pallet storage section (72) of the parts carrying device (F) includes the base frame (66), the support column (67),
Since the frame is formed by the horizontal frames (68) and (69), the cam camp ( All you have to do is bring in α). Then, the pallet (C) stored in the lowest pallet storage section (72)
When the cam cap (α) has been carried into the cassette case (D), the barrel I-
(C) into the second pallet storage section (72) from the bottom of the apparatus main body (61), and carry the cam cap (α) onto the pallet (C) in the same manner as above. In this way, the pallet (
C) from the bottom to the main body of the parts loading device (F) (
61), and by carrying the cam cap (α) into this pallet (C), eight pallets (C)
When the cam caps (α>) are loaded into all of the parts, the cylinder (62) of the parts loading device (F) is extended, and the entire device body (61) is raised by one stage of the pallet storage section. Insert the eight pallets (C) pulled into the main body (61) again into each pallet storage section (16) of the cassette case (D).
Since each pallet (C) is raised by one level of the pallet storage area (16) of the first cassette case (D), the pallet storage area (16) of the first cassette case (D)
6), and in the first cassette case (D), the bottom pallet storage section (16>) is empty, and the cam caps (α) are arranged in each of the eight steps above it. The loaded pallets (C) are now in a stored state.In this way, when the cam caps (α) have been carried into each pallet (C) in the first cassette case (D),
Lower the release pin (50) and open the first cassette case (
D) The shutter plate (25) of the rear opening (17b) is closed, and in parallel with this, the cylinder (39) is operated to close the first guide roller (34a) (34a) connected by the connecting rod (38a). )... on the conveyor surface (
), and protrude from the upper surface of the first guide roller (34a).
(34a)... in the first cassette case (D)
Fit into the guide groove (10b) provided in the bottom plate (lO) of. Furthermore, in parallel with the above operation, a motor (45a
) and turn the first slider (40a) into parts! By moving the first slider (40a) to the shell large position (A) side (& back), the first slider (40a) is attached to the bottom plate (
10), the first slider (
The locking claw (48a) of 40a) is engaged with the recess (10d) provided in the bottom plate (10). Next, the motor (46
a) in the normal direction and move the first slider (40a) forward in the direction of the arrow 1, the first cassette case (D)
The first guide roller (34a) (34a)...
・Move the parts from the parts loading position (a) to the first intermediate position (b) while being guided by. In this way,
When the first cassette case (D) is conveyed to the first intermediate position (B), the first guide rollers (34a) (34a
)... is positioned below the conveyor surface (to),
This time, the fourth guide roller (34d) (34d
)... and the fourth slider (40d) to move the second cassette case (D') from the second intermediate position (c) to the enemy part position (d) in the same manner as above, In the same manner as in the case of the first cassette case (D), the CamCamp (α) is carried into each pallet (C) in the second cassette case (D'). In addition, in parallel with the above loading operation, the third cassette case (Dl) is moved from the parts supply position (c) to the third cassette case (Dl) by the third guide rollers (34c) (34c)... and the third slider (40C). 2
Move it to the intermediate position (d). Then, when the parts supply position (40a) becomes empty, the first slider (40a)
) on the first slider (40a), and the locking claw (4
8a) to the bottom plate (10) of the first cassette case (D).
After separating from the recess (10d) provided in the second guide 6-ra (34b) (34b)... and the second
The slider (40b) moves the first cassette case (
D) is moved from the first intermediate position (b) to the parts supply position (c). Also, after moving the first cassette case (D) to the parts supply position (c), insert the cam cap <α) into the second cassette case (D゛) at the parts loading position (a). After the carrying-in work is completed, the second cassette case (D") is then sent to the first intermediate position (B),
Also, the third cassette case (D") waiting at the second intermediate position (d) is sent to the parts loading position (a), and the third cassette case (D") is
The work of carrying the cam cap (α) into the cassette case (Dl) is started. On the other hand, as described above, the parts (
1 position C) The 1st position on which the cam cap (α) is stored
When the cassette case (D) is located, the gear motor (86) of the cassette lift device (G) is activated to raise the arm (87) located below the parts supply position (C). While holding the first cassette case (D) by (87), lift the first cassette case (D) above the parts supply position (c). Note that at this time, the release pin (88) protruding from the upper surface of the arm (87) is inserted into the through hole (
10a) to enter the first cassette case (D
) provided on the front opening (17a) of the shutter plate (2
5) will open automatically. Then, the empty pallet storage section (16) located at the lowest stage of the first cassette case (D) supported by the arm (87) is moved to the pallet drawer (
When the arm (87) is located on the same plane as the part chuck position (E) above, the arm (87) stops rising. Next, extend the cylinder (103) of the pallet drawer (H) and move the slider (97) to the first cassette case (D).
) side, move the empty pallet (C) above the parts chuck position (E) to the empty pallet storage area (
16) Slide it to the side. And an empty palette (C
) into the pallet storage section (16). In this way, empty barre 7), (C) pallet storage section (X6)
When storage of the hexagon is completed, the first cassette case (
D) by one level of the pallet storage section, and lower the pallet storage section (1) to the second level from the bottom of the first cassette case (D).
6) Position the pallet (C) stored in the inside on the same plane as the parts chuck position (E). At this time, the roller (98) provided on the slider (97) of the pallet pull-out device (H) is located inside the notch recess (3) of the pallet (C), so the cylinder (103) and slide the slider (97) toward the parts assembling machine (A), the pallet (C) with the cam caps (α) aligned on its surface will be placed above the parts supply position (E). drawn out. Then, the pallet (C) with the cam caps (α) arranged on the parts supply position (E)
Once the cam caps (α) are located, the parts assembling machine (A) sequentially chunks the cam caps (α) on the pallet (C) and assembles them into predetermined locations on the cylinder head that is being sequentially transported. In this way, when all the cam camps (α) on the pallet (C) located above the parts chuck position (E) are assembled to the cylinder head, the cylinder (10
3) is extended and the empty pallet (C) is returned to the pallet storage section (16) in the second stage from the bottom of the first cassette case (D), and then the empty pallet (C) is returned to the first cassette case (D). (
D) is lowered by one level of the pallet storage section, and this time, lower the pallet (C) in the third pallet storage section (16) from the bottom.
) is pulled out onto the parts chuck position (E). Then, the cam camp (α) on this pallet (C) is again assembled into the cylinder head by the parts assembling machine (A). By sequentially repeating the above operations, the uppermost pallet storage section (16
) The pallet (C) located within the parts chuck position (
e) When pulled upward, the arm (87) of the cassette lift device (G) descends to the lower end, and the first cassette case (D) is placed in the uppermost pallet storage section (16). If C) remains in the unreturned state,
The knob is returned to the supply position (c). And after this, the first
The cassette case (D) has a third guide roller (34C).
(34C)... and sent to the second intermediate position (d) by the third slider (40c). Also, the empty first
After the cassette case (D) has been sent to the second intermediate position (d), the parts supply position (c) is the same as the first cassette case (D) at the cam cap loading position (a). After the cam cap (α>) is carried in in the same way, the second cassette case (Do
) will be sent. When this second cassette case (Do) is located above the parts supply position (c), the second cassette case (Do)
As in the previous case, the cassette case (Do) is lifted by the arm (87) of the cassette lift device (G). First, the lowest pallet storage section (16) in which no pallet (C) is accommodated is positioned on the same plane as the parts chuck position (E), and in this pallet storage section (16), the It is pulled out from the top of the cassette case (D) of No. 1 onto the parts chuck position (E),
And all the cam caps (α) aligned on the surface are assembled into the cylinder head, leaving the empty barrel) (C
) is stored. After that, in the same way as the first cassette case (D), the pallets (C) stored in the second cassette case (D') are sequentially pulled out onto the parts chuck position (E), and the valentine is (C) Upper cam cap (
α) is being sequentially assembled into the cylinder head, and while the above work is being carried out, at the parts loading position (A),
Cam camp (α) to the third cassette case (D”)
has been carried in, and the third cassette case (D”) is placed in the first
When the parts are sent to the intermediate position (B), the first cassette case (D), which was waiting at the second intermediate position (D) and whose uppermost pallet storage section (16) is now empty, supplies parts again. It will be returned to position (a). Therefore, at the parts supply position (A), the pallets (C) in the chamber are pulled out from the first cassette case (D) one after another, and when the CamCamp (α) has been carried into each pallet (C), the first As in the case of , insert each barrel (C) into the upper 8 pallet storage parts (16) of the first cassette case (D),
Empty the bottom pallet storage compartment (16).

After that, by continuously repeating the above series of operations,
To make it possible to continuously supply a set of five cam caps (α) in an aligned state to a parts assembling machine (A). Furthermore, if this parts supply device (B) is used, for example, the cam caps (α) can be arranged in advance on each pallet (C) of the cassette case (D) while the cam camp assembly machine (A) is not operating. Let this cam cap (α)
Place the cassette case (D) containing the parts into the parts loading position (
In this embodiment, the maximum 16
It is now possible to line up the cam caps (α) on the pallets (C) in advance, and while the parts assembling machine (A) is in operation, workers are always required to place the cam caps (α) on the pallets (C).
) is no longer necessary.

In the above embodiment, in order to make it easier to understand the movement of the cassette case by the cassette conveyor, an example was explained in which only the guide rollers necessary for the movement of the cassette case are projected onto the conveyor surface only when the cassette case is moved. This guide roller protrudes above the conveyor surface even when the cassette case is stopped at the parts loading position, the first intermediate position, the parts supplying position, and the second intermediate position, and keeps the cassette case at that position. It also has the role of positioning. Therefore, when moving any one of the three cassette cases placed on the cassette conveyor, the guide roller necessary for moving that cassette case should protrude above the conveyor surface, and at the same time, the guide roller and The guide rollers at opposing positions are also made to protrude onto the conveyor surface, so that the remaining two cassette cases are positioned at their respective positions.

〔Effect of the invention〕

As described above, the present invention makes it possible to store pallets on which a plurality of sets of cam camps are arranged in a row in a vertically stacked state in a cassette case, and to store the cassette case in a vertically stacked state. The cam cap is kept in standby at two positions, the parts loading position and the first intermediate position, and the pallets in this cassette case can be automatically supplied to the parts chuck position of the parts assembly machine when necessary. It is possible to keep a large number of pallets loaded with pallets lined up in a small space. Therefore, when the parts assembling machine is stopped, the cam caps are arranged on a large number of pallets, and when the parts assembling machine starts operating, it is possible to automatically supply these pallets to the parts assembling machine one after another. It is possible to eliminate the need to always have a worker dedicated to supplying cam caps while the attachment machine is in operation.

Further, in the present invention, at the parts supply position, pallets are sequentially pulled out from the lower pallet storage section of the cassette case to the parts chuck position, and when the pallet in the uppermost pallet storage section is pulled out, this pallet is The cassette case with the topmost tier empty is transported toward the parts loading position without returning it to the pallet storage section, and the pallet, which is still pulled out to this parts chuck position, is
After this, the next cassette case sent to the parts supply position is stored in the lowermost pallet storage area that has been vacated in advance, and the parts chuck A pallet with parts placed thereon can be placed at all times, and the parts assembling machine can always assemble the cam cap to the cylinder head with constant tying.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing a schematic configuration of a parts supply device according to the present invention, Fig. 2 is a plan view showing a state in which multiple sets of cam caps are placed on a pallet, and Fig. 3 is a front view of a cassette case. Figure 4 is a side view, Figure 5 is a bottom view, Figure 6 is a partially enlarged sectional view showing the mechanism for opening and closing the shutter plate, Figure 7 is a plan view of the cassette conveyor, and Figure 8 is a cassette conveyor. A side view showing an enlarged part of the conveyor, FIG. 9 is a side view for explaining how to hold the first guide roller,
Fig. 10 is a side view for explaining the method of holding the first slider, Fig. 11 is a front view of the parts loading device, Fig. 12 is a partially sectional side view, and Fig. 13 is a side view of the cassette lift device, gIi414 The figure shows a side view of the pallet drawer.
FIG. 15 is an enlarged sectional view showing the positioning rod. (B) - Parts feeding device, (C) - Pallet, (D) - Cassette case, (E) - Cassette conveyor, (F) - Parts carrying device, (G) - Cassette lift device , (H)...-Pallet pull-out device, (A)--Parts loading position, (B)--First intermediate position, (C)--Parts supply position, (D) (E) (α) -Second intermediate position, -Parts chuck position, -Camcamp, (72) -Pallet storage section.

Claims (1)

[Claims] (1) There are multiple vertical stages of pallets on which multiple sets of parts are placed in a lined state, and pallet storage sections that slidably store the pallets. By sliding the cassette case that stores a pallet inside and the cassette case in a rectangular trajectory, the cassette case can move the parts to the parts loading position, the first intermediate position, and the parts provided on the trajectory. A cassette conveyor that circulates through four positions, a supply position and a second intermediate position, and a pallet in a cassette case located at the above-mentioned parts loading position is sequentially pulled out, and after parts are supplied onto the pallet, they are returned to the cassette case. By lifting the cassette case at the parts supply position and the parts carrying device which has multiple vertical stages of pallet storage sections for returning the parts, the pallets in the cassette case are sequentially loaded.
A cassette lift device is used to position the part chuck position on the same plane as the part chuck position provided above the front of the parts supply position.
When the pallet that is on the same plane as the parts chuck position is pulled out from the cassette case and placed at the parts chuck position, and the parts on the pallet located at the parts chuck position are transferred to an arbitrary position, this pallet will be reused. The parts supply device sequentially pulls out the pallets from the pallet storage section at the bottom of the cassette case, and then pulls out the pallet from the pallet storage section at the top. Then, without returning this pallet to the pallet storage section, the cassette case is transported toward the parts loading position, and the pallet that has been pulled out is then transported,
A parts supply device characterized in that the parts are stored in a pre-empted lowermost pallet storage section of a cassette case sent to a parts supply position.