JP3084592B2 - Frame supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame feeder which has a frame rod extending in the left-right direction at the front and rear ends of a lower end and feeds a plurality of frames each having a hollow space therebetween.

[0002]

2. Description of the Related Art Conventionally, a box which is continuously fed by a roller conveyor or the like is temporarily stopped halfway, and when a command is issued from a control device, only the first one is sent out. From.

As such a device, for example, a pair of gate devices are arranged on a roller conveyor at an appropriate interval in the direction of transport of the box, and both gates are alternately opened and closed. There is.

[0004]

In the conventional apparatus as described above, when the boxes are conveyed in a continuous state, the gate device cannot reliably stop the desired box, and a plurality of boxes cannot be stopped. May be simultaneously transported together or may not be transported.

The present invention has been made in view of the above-mentioned problems of the prior art, and has a plurality of frame members having frame rods extending in the left-right direction at the front and rear ends of the lower end and having a hollow space therebetween. It is an object of the present invention to provide a frame supply device that can supply one by one and reduces the risk of malfunction.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a plurality of frame members, each having a frame rod extending in the left and right direction at the front and rear ends of the lower end and having a hollow space therebetween. A roller conveyor for arranging and placing a plurality of frames and transporting them forward, and a pair of front and rear upwards and spaced slightly longer than the front and rear lengths of the frames. Seesaw-type locking link with the middle part pivotally attached to the base of the roller conveyor, and a rear end at the rear end so that both protrusions are alternately protruded and retracted above the load receiving surface of the roller conveyor. The provided upwardly projecting piece is pivoted to the roller conveyor base so that it protrudes above the load receiving surface of the roller conveyor with an interval longer than the front and rear length of the frame behind the projecting piece at the rear of the locking link. Freely provided hook rod and locking ring And a driving means for reciprocatingly rotating the locking link and the hook rod so that the rear projection and the projection of the hook rod alternately protrude and retract above the load receiving surface of the roller conveyor. Features.

[0007]

[Function] The front projection of the seesaw locking link projects above the load receiving surface of the roller conveyor, the rear projection projects downward, and the projection of the hook rod projects from the load receiving surface. The first horizontal frame rod of the first stage frame abuts against the front projection of the locking link and is stopped, and the second stage frame is engaged with the hook rod projection. The rear horizontal rod abuts and is stopped. In this state, when the locking link is rotated one reciprocating motion by the driving means, and the protruding piece of the hook rod is immersed and protruded from the load receiving surface in synchronism therewith, the first stage frame is sent out, and the second stage frame is sent out. The frame of the lower stage is locked by the projection at the front of the locking link, and the frame of the third stage is formed by the projection at the rear of the hook rod projecting from below into the front and rear frame rods. The rod is locked and stopped.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention is applied to a work automatic car filling apparatus in which an engine valve of an automobile is used as a work, and a large number of works are automatically stored one by one in a work storage basket serving as a frame. One embodiment will be described with reference to the accompanying drawings. 1 to 4 show the overall structure of the apparatus of the present embodiment, and FIG. 5 and subsequent figures show details of individual parts or members individually.

This embodiment has the following main components. A moving table (3) mounted on a base (2) on which a work storage car (frame) (1) is placed and is movable in the left-right direction over at least two work storage baskets (1). . Table moving means for moving the moving table (3) in the horizontal direction at the same pitch as the vertical pitch (P1) of the work insertion hole (1a) in the work storage car (1).
(4) The base can be moved so as to be orthogonal to the movement trajectory of the moving table (3) through the upper part of the movement trajectory of the moving table (3) and to the work standby position (X), substantially above the center.
Work supply head mounted on a column (5) standing upright
(6). Head moving means (7) for moving the work supply head (6) in the front-rear direction at the same pitch as the horizontal pitch (P2) of the work insertion hole (1a) in the work storage car (1). Work holding means (8), which is mounted on the work supply head (6) so as to be vertically movable, and on which the work (W) can be attached and detached. Work holding means (8)
(9). A car supply for supplying an empty work storage car (1) on the movement table (3) which is orthogonal to the movement path of the movement table (3) and is located at the car supply position (A) at one end of the movement path. Equipment (10). Moving table
From the moving table (3) which is orthogonal to the moving path of (3) and is located at the car discharge position (B) at the other end of the moving path,
A car discharge device (11) for discharging the work storage car (1) in which the work (W) is stored.

Next, each of these components will be described in detail. As shown in FIG. 5, the workpiece storage basket (1) is a frame body formed by assembling a frame rod (1b) made of round bar steel material in the vertical and horizontal height directions and welding each corner thereof. At the upper end of (1c), a plurality of workpiece insertion holes (1a)
Is formed by fixing a wire mesh (1d) that forms

The movable table (3) is slidably mounted on a pair of front and rear guide rods (12) provided on the base (2) and facing left and right, and protrudes from the center of the lower surface. )
The guide rod is inserted into the screw hole (13)
A screw rod (14) parallel to (12) is screwed in, and the screw rod (14) is rotated forward and reverse by a motor (15) such as an AC servomotor provided on a base (2), thereby moving the moving table. (3)
It can be moved in the left-right direction along the guide rod (12). Thus, the screw rod (14) and the motor (15)
Thus, a table moving means (4) is formed.

On the moving table (3), two pairs of clamp levers (16) facing left and right are pivotally mounted with a shaft (17) pointing in the front-rear direction. (3) The air cylinder device (18) provided below the moving table (3) is extended and contracted while being positioned on the upper side, and each of the clamp levers (16) connected to the air cylinder device (18) is used to move the work storage basket.
By gripping and releasing the lower left and right frame rods (1b) of (1), the work storage basket (1) can be fixed to the moving table (3) or released. ing.

The column (5) is erected on the base (2) as a gate-shaped straddling substantially the center of the movement trajectory of the moving table (3), and is fixed to the right side (see FIG. 3) in the front-rear direction. A movable plate (22) on which a work supply head (6) is mounted is slidably mounted on a pair of upper and lower guide rails (21) facing upward.

A projecting piece projecting from the left side of the center of the moving plate (22)
(22a) is provided with a screw hole (23) facing in the front-rear direction.A screw rod (24) parallel to the guide rail (21) is screwed into the screw hole (23), and the screw rod (24) is ) Is rotated forward and reverse by a motor (15) such as an AC servomotor provided on the column (5), so that the moving plate (22) moves from the work standby position (X) along the guide rail (21). The table (3) can be moved in the front-rear direction to a position immediately above the rear end (the left side in FIGS. 1 and 2 is the front side). Thus, the motor (2
5), head moving means by screw holes (24), moving plate (22), etc.
(7) is formed.

A downwardly directed first air cylinder device (26) is fixed to the work supply head (6) of the moving plate (22), and a lower end of the piston rod (26a) has a small stroke at the lower end. The second air cylinder device (27) facing is fixed, and the lifting / lowering means (9) is formed by the two air cylinder devices (26) and (27).
Are formed.

At the lower end of the piston rod (27a) of the second air cylinder device (27), a suction cup (2) serving as a work holding means (8) is provided.
8) is installed. This suction cup (28) is
a) A suction hole formed in the nozzle side wall and communicating with the suction cup surface when the compressed air supplied from a) passes through the nozzle (not shown).
(Not shown) Suction of the air inside, the work is in close contact with the suction cup surface
(W) is a known one that is vacuum-adsorbed.

By the suction cup (28), the work supply position (X)
The upper surface of the umbrella (Wa) of the work (W)
(W) can be sent to any position of the work storage basket (1).

At the rear lower part of the moving plate (22), a bracket (29)
Is fixed as height adjustable and this bracket
At the lower part of (29), the downward shaft part (Wb) of the work (W), to which the umbrella part (Wa) is sucked by the suction cup (28), is placed from both sides by a pair of openable fingers (30). A known work gripping device (31) configured to lightly grip a proximity sensor (32) configured to be operated by the work (W) when the work (W) reaches a position where the work (W) is sucked by the suction cup (28). ) Is provided.

The proximity sensor (32) is moved by the lifting / lowering means (9).
When the work (W) is lowered, the air cylinder device (33) provided on the bracket (29) causes the umbrella section of the work (W) to be lowered.
(Wa), it can be retracted to a position distant rearward from the descending locus.

The work (W) is provided with an inclined chute (3
4), and are supplied one by one to the work supply position (X) by a known selector (35) provided near the tip of the inclined chute (34). .

At the work supply position (X), there is provided a gate device (37) which can be opened and closed by an air cylinder device (36) provided on the base (2).

The car supply device (10) is arranged at a right angle to the base (2) at the rear of the base (2). ) Is provided with a roller conveyor (41) inclined forward and downward so as to be conveyed toward (1).

The car supply position of this roller conveyor (41)
The part near (A) is provided with a pair of upwardly projecting pieces (42a) at both ends, which are spaced slightly longer in the front-rear direction (L1) of the work storage basket (1) at both ends. (42a) is a roller conveyor
The middle part of a pair of right and left seesaw-type locking links (42) that alternately protrude and disappear above the load receiving surface (P) of (41),
It is pivotally attached to a base (41a) of a roller conveyor (41) so as to rotate integrally with a shaft (43) facing in the left-right direction.

Roller conveyor behind both locking links (42)
On the base (2) of (41), the front ends of a pair of left and right hook rods (44) each having an upwardly projecting piece (44a) at the rear end rotate integrally with a shaft (45) facing in the left and right direction. Being pivoted to do so.
The projection (42a) at the rear of the front locking link (42) and the hook rod (4
The front-rear distance between the projecting piece (44a) and the projecting piece (44a) is longer than the length (L1) in the front-rear direction of the work storage basket (1), and preferably, the length (L1) of the rear portion of the locking link (42) is The length is slightly longer than the sum of the length of the projection (44a).

An air cylinder device (46) facing upward is provided substantially at the center between the front and rear shafts (43) and (45) on the base (41a), and the upper end of the piston rod (46a) has a front-rear direction. A drive plate (48) having a long hole (47) is fixed.

In the elongated hole (47), a pin (right and left) extending between the rear ends of a pair of arms (49) fixedly fitted to the center of the shaft (43) and extending rearward is provided. 50) and a pin (52) facing left and right extending between the front ends of a pair of arms (51) fixedly fitted to the center of the shaft (45) and extending forward. Penetrates.

Thus, the air cylinder device (46), the driving plate
(48), arm (49) (51), pin (50) (52), etc., the projection (42a) at the rear of the locking link (42) and the projection (44) of the hook rod (44).
a) with the locking link (42) and the hook rod (44) so as to alternately protrude and retract above the load receiving surface (P) of the roller conveyor (41).
And a driving means (53) for moving in a coordinated manner.

As shown in FIG. 2, the projecting piece (42) at the front of the seesaw type locking link (42) is
a) protrudes above the load receiving surface (P) of the roller conveyor (41), the rear projecting piece (42a) is recessed downward, and the projecting piece (44a) of the hook rod (44) is P), the first projecting piece (42a) of the locking link (42)
The frame rod (1b) at the front part of the work storage basket (1) of the tier is stopped by abutment, and the projection (44a) of the hook rod (44) is brought into contact with the work storage basket (1) of the second tier. The rear frame rod (1b) abuts and is stopped, and from this state, the driving means (53) causes the front projection (42a) of the locking pin (42) to receive the cargo as shown in FIG. Surface (P) immersed, and the rear protruding piece (42a)
When the locking link (42) and the hook rod (44) are moved so that they protrude from (P) and the protruding piece (44a) of the hook rod (44) is immersed from the load receiving surface (P), the first step is performed. Eye work basket
(1) is the car supply position (A) along the roller conveyor (41)
And the front end of the second stage work storage car (1) abuts against the projection (42a) at the rear of the locking link (42) and is stopped.

When the locking link (42) and the hook rod (44) are returned to the state shown in FIG. 2 by the driving means (53) from the state shown in FIG. 6, the second stage shown in FIG. Work storage basket (1)
Abuts against the protruding piece (42a) at the front of the locking link (42) and is stopped, so that it advances along the roller conveyor (41),
In the meantime, the projecting piece (44a) of the hook rod (44) enters between the two frame rods (1b) at the front lower end of the third stage work storage cage (1), and the third stage work storage cage (1). (1) moves forward along the roller conveyor (41) until the frame rod (1b) at the rear lower end comes into contact with the protruding piece (44a) of the hook rod (44) and is stopped. The state is the same as the state shown in FIG. In this way, the plurality of workpiece storage cars (1) are placed at the car supply position.
(A) are sent one by one.

As shown in FIGS. 1 to 3 and FIG.
On the left side of (5), a moving plate (61) is provided with an air cylinder device (6).
It is mounted so that it can be moved in the front-rear direction by 2). A push plate (63) is pivotally attached to the movable plate (61) with an axis (64) pointing in the front-rear direction so as to be rotatable between an operating position indicated by a solid line in FIG. The push plate (63) is configured to be turned between an operating position and a retracted position by a downwardly directed air cylinder device (65) provided on the movable plate (61).

Thus, the moving plate (61), the air cylinder device
(62) (65), basket retraction device (66) by push plate (63), etc.
Are formed. This car retraction device (66) is shown in FIG.
In the state shown in (1), the push plate (63) is rotated to the operating position located between the first-stage work storage car (1) and the second-stage work storage car (1), When the projecting piece (42a) at the front part of the locking link (42) descends and the first stage work storage car (1) advances along the roller conveyor (41), the air cylinder device ( 62) is activated, and the first plate is
The work storage basket (1) of the stage is forcibly pulled in until it comes into contact with a stopper (67) provided at the front of the upper surface of the moving table (3).

A downwardly directed air cylinder device (73) is fixed to the upper part of a bracket (72) extending rearward from the upper end of a column (71) erected at the left front part of the base (2). A pair of downward-pointing pointed positioning pins (75) protrude from the lower surface of the front right and rear left portions of the horizontal plate (74) fixed to the lower end of the rod (73a).

The two pins (75) are connected to a car retraction device (66).
Work insertion hole (1a) inside the diagonal of the front right and rear left parts of the work storage basket (1) sent to the position where it comes into contact with the stopper (67), or any predetermined work Insertion hole
(1a) Insert the work storage basket
(1) can be accurately positioned at the car supply position (A).

Thus, the air cylinder device (73), the horizontal plate
(74), cage positioning device (7
6) is formed. The basket discharging device (11) is a base (2)
The workpiece (W) is disposed at a right angle to the base (2) at right angles to the roller conveyor (41) and parallel to the roller conveyor (41), and located at the car discharge position (B). Is provided with a horizontal roller conveyor (81) for guiding the work storage car (1) in which is stored the rearward.

The car discharge device (11) is located at the car discharge position.
(B) is always located in front of the work storage basket (1),
The work storage cage (1) is moved rearward by the operation of a well-known rodless air cylinder device (82) provided on the right side of the base (2) and facing the front-rear direction.
A push plate (83) for extruding to (81) is provided.

Next, the overall operation of this embodiment will be described. The above-described apparatus is provided with a number of sensors such as a proximity sensor for detecting the position of the work storage car (1) and the moving table (3) and starting the next work. , The whole device operates as follows, but for those sensors,
The illustration and the detailed description are omitted.

With the moving table (3) positioned at the car supply position (A), the operation of the car supply device (10) causes only the frontmost work storage car (1) on the roller conveyor (41) to operate. Is pushed forward by the push plate (63) and is advanced until it comes into contact with the stopper (67), and then the car positioning device (7
The positioning pin (75) of 6) descends, and the work storage basket (1)
Is inserted into the diagonal work insertion hole (1a), the work storage car (1) is accurately positioned at the car supply position (A).

In this state, when the air cylinder device (18) is actuated, the clamp lever (16) grips the frame rods (1b) at the lower left and right sides of the work storage car (1). ) Are fixed on the moving table (3).

Next, the moving table (3) is moved right by the operation of the table moving means (4) until the work insertion hole (1a) at the rightmost end of the work storing car (1) reaches just below the work supply head (6). And stopped at that position.

In this state, the work (X) located at the work standby position (X) is adsorbed by the suction cup (28), and the work (X) is held by both fingers (30) of the work holding device (31). When the gate device (37) is opened and the screw (24) is rotated by the operation of the motor (25), the work (X) is moved backward, and the work is first stored in accordance with a predetermined program. The car (1) is stopped at a position immediately above the foremost workpiece insertion hole (1a) at the rightmost end.

Next, when the second air cylinder device (27) is extended, the work (X) is separated from both fingers (30).
Is slightly lowered while being held by
The lower end is inserted into the work insertion hole (1a).

Thereafter, both fingers of the work holding device (31)
After the opening of (31), the first air cylinder device (26) is extended, the work (X) is inserted deeply into the work insertion hole (1a), and the work (W) reaches the lower limit of the descending stroke. Or
Alternatively, immediately before that, the suction action of the suction cup (28) is released, so that the work (W) separates from the suction cup (28), falls slightly by its own weight, and is accommodated in the work insertion hole (1a).

Next, the suction cup (28) is returned to the original work standby position (X) by an operation reverse to the above operation. By this time, the gate device (37) is closed and the work standby position (X)
, The second work (W) is supplied by the selector (35).

Next, the second work (W) is inserted into the second work insertion hole (1a) at the rightmost end of the work storage car (1) in the same manner as the first work (W) according to the program. Is done.

Similarly, after the workpieces (W) are sequentially inserted into the rearmost workpiece insertion hole (1a) at the rightmost end of the workpiece storage car (1), the moving table (3) is moved to the table moving means (4). With this operation, the workpiece storage cage (1) is moved to the right by the same pitch as the vertical pitch (P1) of the workpiece insertion hole (1a) of the workpiece storage cage (1).
Work (W) is inserted into the work insertion hole (1a) in the second row from the right of (1).
Are sequentially inserted.

Thereafter, in the same manner, when all of the work (W) is inserted up to the rearmost work insertion hole (1a) at the left end of the work storage car (1), the work storage car (1) is moved to the moving table. Along with (3), it is moved to the car discharge position (B) by the table moving means (4), and then the air cylinder device (18) is contracted, and the clamp lever (16) is moved to the position of the work storage car (1). After releasing the clamp, the work storage car (1) is pushed rearward from the moving table (3) onto the roller conveyor (81) by the backward movement of the push plate (83).

In the same manner as described above, the second and subsequent work-holding cages (1) insert a large number of works (W) into the respective work insertion holes (1a).
After that, it is pushed backward by the push plate (83). At this time, due to the backward movement of the work storage car (1) of the second and subsequent stages, the work storage car (1) placed on the roller conveyor (83) earlier is also pushed backward by one car each. Be moved.

In the above embodiment, the roller conveyor is a free roller conveyor having no positive driving means. However, a known driving type in which each roller is rotated synchronously by a motor is used. Is also good.

[0049]

According to the present invention, the locking link is rotated one reciprocating motion, and the projecting piece of the hook rod is immersed and protruded from the load receiving surface of the roller conveyor in synchronism with the rotation of the locking link. It is possible to reliably supply a plurality of frames that have been sent intermittently or intermittently one by one.

In particular, in the state where the front frame is stopped by contacting the rear projection of the locking link, the projection of the hook rod projects between the front and rear frame rods of the next frame. Since the rear frame rod abuts on the protruding piece and the frame is stopped, even if a plurality of frames are sent in a state in which they are completely in close contact with each other, the frame after the second frame is stopped. The forward movement is reliably prevented, and only one front frame can be reliably separated from the other frames and supplied by one operation, and a plurality of frames are supplied at once by mistake. Never.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a partially cutaway side view.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view of a work storage basket.

FIG. 6 is a longitudinal sectional side view showing an operation state different from FIG. 2 of a main part of the car supply device.

FIG. 7 is a sectional view taken along line VII-VII in FIG. 2;

[Explanation of symbols]

(1) Work storage basket (frame) (1a) Work insertion hole (1b) Frame rod (1c) Frame (1d) Wire mesh (2) Base (3) Moving table (3a) Projection piece (4) Table moving means (5) Column (6) Work supply head (7) Head moving means (8) Work holding means (9) Elevating means (10) Car supply device (11) Car discharge device (12) Guide rod (13) Screw hole ( 14) Screw rod (15) Motor (16) Clamp lever (17) Shaft (18) Air cylinder device (21) Guide rail (22) Moving plate (22a) Projection piece (23) Screw hole (24) Screw rod (25 ) Motor (26) First air cylinder device (26a) Piston rod (27) Second air cylinder device (27a) Piston rod (28) Suction cup (28a) Air hose (29) Bracket (30) Finger (31) Work holding device (32) Proximity sensor (33) Air cylinder device (34) Tilt chute (35) Selector (36) Air cylinder device (37) Gate device (41) Roller conveyor (41a) Base (42) Locking link (43) Shaft (44) Hook rod (44a ) Projecting piece (45) Shaft (46) Air cylinder device (46a) Piston rod (47) Slot (48) Drive plate (49) (51) Arm (50) (52) Pin (53) Drive means (61) Moving plate (62) Rodless air cylinder device (63) Push plate (64) Shaft (65) Air cylinder device (66) Car retracting device (67) Stopper (71) Post (72) Bracket (73) Air cylinder device ( 73a) Piston rod (74) Horizontal plate (75) Positioning pin (76) Car positioning device (81) Roller conveyor (82) Rodless air cylinder device (83) Push plate (A) Car supply position (B) Car discharge position (L) Length (P) Receiving surface (P1) Vertical pitch (P2) Horizontal pitch (W) Work (Wa) Head (Wb) Shaft (X) Work standby position

(56) References JP-A-3-288718 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65G 47/88 B65G 47/78

Claims (1)

(57) [Claims] 1. A frame supply device which has frame rods facing left and right at front and rear lower ends and supplies a plurality of frames each having a hollow space therebetween, wherein the plurality of frames are aligned. A roller conveyor for transporting them forward, and a pair of front and rear upwardly projecting pieces spaced slightly longer than the front and rear lengths of the frame are provided at both ends. A seesaw-type locking link whose center part is pivotally attached to the base of the roller conveyor and an upward projecting piece provided at the rear end of the locking link are protruded from the rear part of the locking link so as to alternately protrude and retract above the load receiving surface. A hook rod rotatably provided on the base of the roller conveyor so as to protrude above and retract from the load receiving surface of the roller conveyor at an interval longer than the front-rear length of the frame body behind one side, and a protrusion at the rear of the locking link. The roller and the protruding piece of the hook rod Above the receiving surface of the Ya to haunt alternately,
A frame supply device comprising: a driving unit for reciprocatingly rotating a locking link and a hook rod.