JPH0694290B2 - Transport unit for boxes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a box body installed in a transfer line for carrying a box body loaded for containing articles into a subsequent process after containing the articles. Transport unit.

(Prior Art) In a conventional transporting device for boxes, for example, as shown in FIG. 3, a box h carried in from an upper conveyor C1 is transferred to an upper conveyor.
The product is placed on a tilting table k arranged in front of C1 and the articles to be loaded through a chute s are accommodated in a box h on this tilting table k, and then the tilting table k is tilted to move the box. Tilting platform k
It was configured to send from the top to the lower conveyor C2 and carry out from the lower conveyor C2 to the subsequent process.

(Problems to be Solved by the Invention) In the case of the above-mentioned transport apparatus, the inner ends of the upper and lower conveyors C1 and C2 are close to each other, and the box h is moved from the upper conveyor C1 to the lower conveyor C2.
Since the space for handing over is reduced, the box h
Has a problem in that the size of the box h is limited and the box h is tilted together with the tilting table k to be delivered, so that the delivery operation of the box h becomes unstable and the stored articles easily fall. It was

An object of the present invention is to provide a transporting unit for boxes that solves the above problems.

(Means for Solving the Problems) The carrying-in unit for boxes according to the present invention is a carrying-in unit that is installed with a downward inclination toward the carrying-in direction in order to form a carrying-in path in which empty boxes are carried in under their own weight. The conveyor and the carry-out conveyor, which is installed to incline downward toward the carry-out direction to form a carry-out path through which the box containing the articles is carried out by its own weight, are arranged side by side in the vertical direction, and the carry-in is carried out. Between the upper position adjacent to the leading end of the conveyor and the lower position adjacent to the base end of the carry-out conveyor, a descending path for lowering the box body is formed, and the carriage is laid across the leading end of the carry-in conveyor. The conveyor roller is attached to the upper and lower surfaces of the upper surface of the carry-in conveyor so as to be able to circulate around the conveyor roller and to prevent and allow the transport of the box to the destination of the carry-in conveyor.
On the piston shaft of the cylinder installed between the two conveyors, a movable shaft which is parallel to the conveyor roller and is horizontally movably mounted, and the circular motion of the movable shaft is connected to the left and right ends of the movable shaft. A pair of left and right 4 incorporating a pair of left and right lifting members that move up and down on both sides of the descending path by operation.
A box link mechanism is connected between the elevating members so as to be tiltable between the elevating members to horizontally move the descending path in a horizontal posture. When the box cradle is lowered to the lower end, a regulating member that regulates the lowering of the end of the box cradle on the side opposite to the carrying-out side to convert the box cradle into an inclined posture inclined downward to the carry-out conveyor side. It has an installed configuration.

(Operation) A pair of left and right elevating members incorporated in a pair of left and right four-bar linkages driven by a cylinder installed between the carry-in conveyor and the carry-out conveyor are moved up and down to move horizontally between the both elevating members. The mounted box pedestal is moved up and down in a horizontal posture, and the empty box loaded by the carry-in conveyor is transferred onto the box pedestal at the rising end position, and then the article is stored. The box is lowered together with the box cradle. When the box is transferred onto the box cradle, the box transferred subsequently to this box and moved to the front end of the carry-in conveyor is moved around the conveyor roller at the front end of the carry-in conveyor. The stopper is pushed back and forth a little in the direction opposite to the carrying-in direction by a stopper that goes around and goes up and down on the upper surface of the carry-in conveyor to stop. Further, the box cradle lowered to the descending end and the box body on the box cradle are converted into an inclined posture slightly tilted down to the carry-out conveyor side by the regulating member installed at the lower end of the descending path where the box body descends. The box body of the box cradle at the descending end slides under its own weight and is automatically transferred onto the carry-out conveyor.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.

The transport unit U for a box body moves the box body H in an empty box state carried in from an empty box supply device (not shown) to the loading section side for loading articles processed by a press or the like into the box body H. After being transferred and containing the articles in the box H, they are installed in a transfer line for carrying out to a subsequent process.

The frame 1 of the transport unit U is formed by assembling a pair of front and rear vertical frames 1a and a pair of upper and lower horizontal frames 1b in a rectangular parallelepiped shape, and casters 2 are attached to the lower surfaces of the front and rear ends thereof. The transport unit U can be moved to and installed at an appropriate position on the transport line.

In this example, the chute 3 installed to put the article processed by a press machine or the like into the box H transferred to the front end of the frame 1 is horizontally rotated with respect to the upper end of the front vertical frame 1a of the frame 1. It is supported by an L-shaped support member 4 that is dynamically adjustable, and is installed above the front end of the frame 1.

In order to cause the box H loaded in the empty box state to move toward the chute 3 side by its own weight, the chute 3 is attached to the upper part of the frame 1.
The carry-in conveyor 5 mounted so as to incline downwards to the side is a pair of conveyor frames 5a that are tilted in parallel to the left and right, and a large number of horizontally laid horizontally between the two conveyor frames 5a. This carry-in conveyor 5a
A carry-in path 6 for carrying in an empty box-shaped box body H is formed in an inclined shape over the upper side and the front side thereof.

Both ends of the stopper 7 are rotatably supported by the roller shaft of the conveyor roller 5b at the front end of the carry-in conveyor 5 so as to stop and release the box H on the front end of the carry-in conveyor 5, and can rotate around the conveyor roller 5b. Attached to, this spudper 7
Is controlled to rotate through a drive mechanism (not shown), and every time the box H moves up and down on the upper surface of the carry-in conveyor 5, one box H is sent from the front end of the carry-in conveyor 5 to the end 6a of the carry-in path 6. Then, the articles sent through the chute 3 are thrown into and housed in the box H transferred to the terminal portion 6a.

In order to carry out the box body H to the subsequent process in a state where articles are accommodated in the box body H, the box body H is tilted in the direction opposite to the tilt direction of the carry-in conveyor 5 with respect to the lower part of the frame 1, and is vertically symmetrical with the carry-in conveyor 5. The carry-out conveyor 8 mounted on the
On the unloading conveyor 8, which are arranged side by side below and apart from each other.
A box H containing the articles extending to the base end 8a
The carry-out path 9 for carrying out the paper in a folded shape with respect to the carry-in direction is formed in an inclined shape, and has an upper position adjacent to the leading end of the carry-in conveyor 5 and a lower position adjacent to the base end of the carry-out conveyor 8. A descending path for descending the box body H accommodating the articles is formed therebetween.

The cylinder 11 which is operated by air pressure is mounted on the rear lower surface of both conveyor frames 5a of the carry-in conveyor 5 with respect to the mounting plate 12 via a rear projecting piece 12a projecting from the rear end of the mounting plate 12. It is pivoted in parallel with 12a.

The connecting link 13 is connected to the tip of the piston shaft 11a of the cylinder 11 so as to be vertically rotatable.
The movable shaft 14, which is orthogonally connected to the piston shaft 11a of the cylinder 11 via the, extends horizontally near the left and right ends of the frame 1 in parallel with the conveyor rollers 5b of the carry-in conveyor 5.

The pair of left and right first arms 15 pivotally attached to the front projecting pieces 12b hung respectively at the left and right ends of the front end of the mounting plate 12 through pins 16 are base portions extending in the longitudinal direction.
15a and an extending portion 15b that is continuous with the lower end of the base portion 15a and extends forward, and the upper end of the base portion 15a has a pin 17
When the piston shaft 11a of the cylinder 11 is moved back and forth, the movable shaft 14 is pushed forward through the connecting link 13 or pulled rearward to pull the first arm. The first arm 15 swings up and down around the swing fulcrum a, and the first arm 15 swings up and down around the swing fulcrum a to be changed into an upward tilting posture and a downward tilting posture.

The pair of left and right second arms 18 arranged side by side above the extending portions 15b of both the first arms 15 have their base end portions near the center portion of the base portion 15a of the first arm 15 via the pins 19. It is articulated.

The pair of left and right elevating members 20 has a vertical portion 20a and a horizontal portion 20b connected to each other and is formed in an L shape, and the elevating member 20 and the first and second arms 15 and 18 are provided on the vertical portion 20a. In order to articulate, the tip of the first arm 15 and the tip of the second arm 18 are pivotally mounted vertically separated by a pin 21 and a pin 22, respectively, and the lower end of the front end of the first arm 15 projects inward. Hanging piece 20c
Are formed respectively. And the first arm 15,
The second arm 18 and the lifting member 20 are articulated,
A four-bar linkage mechanism for moving the elevating member 20 in the vertical direction is formed. When both first arms 15 swing about the swing fulcrum a, both raising and lowering members 20 move vertically.
With the vertical posture of 20a and the horizontal portion 20b of the horizontal posture, they are vertically moved in parallel arcs about the swing fulcrum a.

A box cradle 23 provided with side plates 23a on both left and right sides and an appropriate number of rollers 23b laid horizontally in parallel between the side plates 23a.
Is sandwiched between both elevating members 20 in order to move up and down between the terminal end 6a of the carry-in path 6 and the start end 9a of the carry-out path 9 to move the box H from the terminal end 6a to the starting end 9a. It is supported by both lifting members 20. Then, the rear ends of both side plates 23a of the box pedestal 23 are pivotally attached to the rear ends of the horizontal portions 20b of the elevating member 20 via pins 24, and the recesses are provided at the lower ends near the front portions of the both side plates 23a. 25 is releasably engaged with the hooking piece 20c of the elevating member 20, and the box support 23 is attached to the elevating members 20 so as to be tiltable about the pins 24. When the upper end of the carry-in conveyer 5 is moved to the upper position adjacent to the leading end of the carry-in conveyor 5, the box H on the leading end of the carry-in conveyor 5 is moved to the upper end of the box 7 by the retracting operation of the stopper 7. Can be transferred to. Further, when both the elevating members 20 descend from the ascending ends, the box receiving table 23 on which the box body H is mounted descends together with the elevating members 20 in a horizontal state, and when the both elevating members 20 move to the descending ends, the box holders 23 move. The table 23 is adjacent to the base end of the carry-out conveyor 8 in a state where the lower end of the counter-carry-out conveyor 8 side is restricted by the restricting member 26 and the box support 23 is slightly tilted counterclockwise about the pin 24 as a fulcrum. The box H descends to the lower position, and the box H on the box pedestal 23 is automatically transferred onto the transfer conveyor 8 and carried out to the subsequent process through the carry-out path 9.

It should be noted that the empty box-shaped box body H faces the box body H in a state in which it is displaced to the starting end portion 9a of the carry-out path 9 or in a state in which it projects from the starting end portion 9a toward the front of the frame 1 and is tilted forward. The articles may be fed through the chute arranged so as to be housed in the box H.

Next, the operation and effect of the embodiment having the above-mentioned configuration will be described.

In this example, the carry-in path 6 through which the empty box H is carried by its own weight
And a carry-in conveyor 5 that is installed to incline toward the carry-in direction and a carry-out path 9 through which the box H containing the articles is carried out by its own weight. And an upper position adjacent to the leading end of the carry-in conveyor 5 while being vertically spaced apart from the carry-out conveyor 8 installed in parallel.
A descending path for lowering the box body H is formed between the lower position adjacent to the base end of the carry-out conveyor 8 and the upper surface of the carry-in conveyor 5 is installed on the conveyor roller 5b horizontally installed at the tip of the carry-in conveyor 5. A stopper 7 that appears in and out of the upper and lower parts and prevents and allows the transport of the box H to the destination of the carry-in conveyor 5 is attached so as to be able to circulate around the conveyor rollers 5b,
On the piston shaft 11a of the cylinder 11 installed between 5 and 8, a movable shaft 14 which is horizontally laid in parallel with the conveyor roller 5b so as to be circularly movable, and movable by being linked to the left and right ends of the movable shaft 14, respectively. A pair of left and right 4 in which a pair of left and right elevating members 20 that ascends and descends on both sides of the descending path by the circular motion of the shaft 14 is incorporated.
A box link 23 that connects the joint link mechanism and is tiltably connected to the elevating members 20 between the elevating members 20 so as to move in parallel in the descending path in a horizontal posture is installed horizontally, and the lower end of the descending path is connected. When the box cradle 23 is lowered to the lower end, the counter unloading side end of the box cradle 23 is restricted from being lowered, and the box cradle 23 is converted to the inclined posture in which it is lowered to the unloading conveyor 8 side. A restriction member 26 is installed.

Therefore, the transport mechanism for the box is simplified to simplify the transport unit U.
The whole can be made compact, and the transport path through which the box H passes can be made compact by the carry-in path, the descending path, and the carry-out path that are continuously provided in a folded shape.

Further, since the stopper 7 that revolves around the leading end of the carry-in conveyor 5 is provided, the box H that has been carried in subsequently to the box H on the box receiving table 23 and moved to the top of the carry-in conveyor 5 is transferred. The box H is slightly pushed back in the direction opposite to the carrying-in direction by the stopper 7 and can be stopped in a state of being slightly separated from the box H on the box pedestal 23, and the next box H can be stopped. It is possible to eliminate a problem in which the lowering operation of the box H on the box pedestal 23 is hindered by hitting the upper box H or the lowering posture of the box H is changed.

Since the end portion 6a of the carry-in path 6 and the start end portion 9a of the carry-out path 9 are vertically separated from each other, a space for loading an article into the box H is provided from the end portion 6a to the start end portion 9a. The box body H can be diversified by eliminating the restrictions on the chute position and the chute direction of the article.
There is an effect that the box body H of each size can be applied to the transport unit U by eliminating the size limitation.

Further, the elevating member 20 is moved in parallel in the vertical direction so that the box support 23
Can be lowered from the end portion 6a to the start end portion 9a in the same horizontal posture, the posture of the box H on the box pedestal 23 is stabilized, and the accommodation state of the articles in the box H is stabilized. Thus, there is an effect that the box H is lowered to prevent a problem that the article falls from the inside of the box during the transfer.

Further, the box cradle 23 lowered to the lower end and the box H on the box pedestal 23 can be converted to the inclined posture inclined downward to the carry-out conveyor 8 side by the restricting member 26, so that the lower end is lowered. The box body H can be accurately slid on the box cradle 23 and smoothly transferred onto the carry-out conveyor 8.

(Effects of the Invention) Since the present invention is configured as described above, the transport mechanism for the box body can be simplified and the entire transport unit can be made compact, and the transport path through which the box body passes is continuously provided in a folded shape. It can be made compact by the loading path, the descending path, and the unloading path.

In addition, since a stopper that circulates at the tip of the carry-in conveyor is provided, this box stops the box that is subsequently loaded into the box on the box cradle and moved to the tip of the carry-in conveyor. With this, it can be pushed back a little in the direction opposite to the loading direction and can be stopped in a state of being slightly separated from the box body on the box cradle,
It is possible to eliminate an inconvenience in which the succeeding box body collides with the box body on the box pedestal to hinder the descent operation of the box body on the box pedestal, or the descent posture of the box body changes.

Further, since the box cradle lowered to the descending end and the box body on the box cradle can be converted into the inclined posture inclining downward to the carry-out conveyor side by the regulating member, the box pedestal can be accurately lowered to the descending end. In addition, it can be slid on the box cradle and smoothly transferred onto the unloading conveyor.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention.
The figure is a side view, FIG. 2 is a plan view, and FIG. 3 is a schematic side view of a conventional conveying device. 6 ... Carry-in path 6a ... End part 9 ... Carry-out path 9a ... Start end part 20 ... Lifting member 23 ... Box cradle H ... Box body

Claims (1)

[Claims] 1. A carry-in conveyor installed so as to incline downward in the carry-in direction in order to form a carry-in path in which an empty box body is carried in by its own weight, and a box body containing articles is carried out by its own weight. And a unloading conveyor that is installed inclining downward to the unloading direction side to form a unloading path that is separated from each other in the vertical direction,
A descending path for lowering the box body is formed between an upper position adjacent to the leading end of the carry-in conveyor and a lower position adjacent to the base end of the carry-out conveyor, and is horizontally extended at the leading end of the carry-in conveyor. The conveyor roller is attached to the upper and lower surfaces of the upper surface of the carry-in conveyor, and a stopper for preventing and allowing the transport of the box body to the destination of the carry-in conveyor is attached to the conveyor roller so as to be rotatable around the conveyor roller. On the piston shaft of the cylinder installed between the two conveyors, a movable shaft which is parallel to the conveyor roller and is horizontally movably mounted, and the circular motion of the movable shaft is connected to the left and right ends of the movable shaft. A pair of left and right four-bar link mechanisms incorporating a pair of left and right lifting members that move up and down on both sides of the descending path by operation are connected, and the two lifting members are tiltably connected between the two lifting members. The above A box cradle that horizontally moves in parallel in the descending path is laid horizontally, and at the lower end of the descending path, when the box cradle descends to the descending end, the lower end of the box cradle on the side opposite to the carry-out side is lowered. A transporting unit for a box body, comprising a regulating member for regulating and converting the box cradle into an inclined posture inclining downward to the carry-out conveyor side.