JPS6116966Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a device for automatically loading various workpieces into packaging bags.Compared to conventional devices, this invention eliminates dead stock and time loss in the automation process, This invention relates to improvements that allow non-stop supply of workpieces and continuous charging operations to be efficiently achieved.

Inside the packaging bag made of plastic film, etc.
Various types and structures of mechanical devices for automatically loading various types of workpieces have already been proposed, and one example of such devices is disclosed in Japanese Utility Model Publication No. 54-542, which was previously proposed by the present applicant. Examples include those disclosed in . That is, a bag support device that supports a large number of packaging bags in a stacked manner is installed oppositely at the delivery end of a conveyor that transfers the packaged items, and the topmost packaging bag in the device is used to utilize air jetted from an air nozzle. the opening of the bag is opened, the workpiece on the conveyor is inserted into the opened bag with the assistance of an insertion guide, and the bag with the workpiece inserted is discharged from the apparatus by a pusher member. This is what I did. In this model, packaging bags are stacked in a fixed position and workpieces are inserted and processed one after another starting from the topmost packaging bag.
Two conveyors are arranged perpendicularly, one conveyor feeds the workpieces at regular intervals, and the other conveyor feeds the packaging bags at regular intervals. At the intersection position of both conveyors, the workpiece is inserted into a bag which is also opened by air or mechanical means using an insertion member, and the bag into which the workpiece is inserted is The bag is sent out of the apparatus by a conveyor.

Both types of conventional techniques described above have the following major problems. That is, in the method disclosed in Japanese Utility Model Publication No. 54-542, a large number of bags are held in a fixed position in a stacked manner, and workpieces are loaded one after another starting from the topmost bag. There is a limit to the amount of bags that can be stacked, and there is the disadvantage of having to completely stop the entire device when replenishing bags.Also, the stacked bags are in close contact with each other, causing the topmost bag to overlap with the one below. Reliable separation requires equipment and structure, and even though it is continuous automation, it is a batch-type work type, and the feeding of the workpiece is not allowed until the loading process of the topmost one is completed. Must stop. Also, the two conveyors are made perpendicular to each other,
Even in cases where one workpiece is inserted into the other bag at the intersection point, both conveyors temporarily stop moving until the workpiece is inserted into one bag at the intersection point. This results in intermittent operation, which poses a problem in improving efficiency through non-stop assembly line work.

The present invention solves the above problems, eliminates dead stock of materials and intermittent time loss during work, and enables non-stop feeding and charging operations between the bag and the workpiece to be performed accurately and easily. The technical means is characterized by a workpiece slide plate that is connected to the delivery end of the conveyor for transferring the loaded workpieces and has an air injection nozzle to the bag flap and a flap gripping part on the bottom surface. A conveyor for loading bag bodies for the work to be loaded is connected to the work slide plate and arranged in series, and a work pushing member is provided above the work transfer conveyor, the work slide plate, and the work load conveyor. An endless belt with rows of an opening member that is removably engaged with the workpiece transfer conveyor, and a conveyor for transferring the workpiece loading bag is disposed below the delivery side of the workpiece transfer conveyor so as to be orthogonal to the workpiece transfer conveyor. A bag supply conveyor is connected and inclined between one side of the bag transfer conveyor and the movement start end of the workpiece loading conveyor, and the workpiece slide is disposed at an intermediate position of the bag supply conveyor. It is arranged on the bag flap holding member in correspondence with the flap holding part of the plate.

According to the above-mentioned technical means of the present invention, as shown in FIGS. 1 and 2, and also in FIGS. 2 are placed at appropriate intervals and sent to the work slide plate 8 side, and bags 6 for packaging are also placed on the bag transfer conveyor 22 at appropriate intervals and the bags are fed. conveyor 2
At this time, the anti-flap side of the bag body 6, that is, the bottom side of the bag body 6 is conveyed so as to slightly protrude from one side of the conveyor 22, so that one end of the bottom side is placed on the movement start end of the bag body supply conveyor 26. The bag body 6 is placed on a supply conveyor 26 by a nip roller 25.
Then, while the flap 6b portion of the bag 6 is being transferred by the conveyor 26, the flap gripping portion of the work slide plate 8 is moved upward by the bag flap holding member 26. 8b and hold the bag 6, the bag 6 is opened by the air injection nozzles 8a and 13, and the upper surface of the bag 6 is inserted and supported by the support plate 14, so that the entire bag is The opening portion is expanded and shaped by the opening member 21. (See Figure 6). In this state, the work 2 on one of the work transfer conveyors 1 is moved from the top of the conveyor 1 through the work slide plate 8 into the bag 6 by the conveyor 1 and the pushing member 10, as shown in FIG. At the same time, the bag 6 becomes free through the lowering of the bag flap holding member 26 and is discharged from the apparatus via the charging conveyor 5 and the pushing member 10. Therefore, according to the present invention, by appropriately selecting the time schedule including the transfer speed of each conveyor 1, 5, 23, and 1c, it is possible to insert the workpieces 2 into the bags 6 that are sent one after another. The process proceeds in a non-stop manner, and unlike conventional intermittent or batch-type processes, it can be carried out extremely efficiently and continuously.

A suitable embodiment of the present invention will be described in detail below. In the overall view shown in FIGS. 1 and 2 and the partial view shown in FIGS. 3 and 4, 1 shows the target work 2 in a bag. This is a transfer conveyor for moving toward a charging position, and the conveyor 1 includes a driving pulley 1a, a driven pulley 1b, and a transfer belt stretched between both pulleys 1a and 1b so as to be able to circulate freely, as shown in FIGS. 1 and 2. 1c, and conveys the workpiece 2 in the left direction in the figure. Also, workpiece 2 is placed on conveyor 1.
Straight guides 3, 3 for moving the workpiece 2 and position detecting members 4, 4 (based on phototubes or the like) for the workpiece 2 are arranged. A loading conveyor 5 is provided in series with the transfer conveyor 1 and spaced therefrom. As shown in FIGS. 1, 2, and 3, the conveyor 5 includes a driving pulley 5a, a driven pulley 5b, and both pulleys 5.
It consists of belts 5c, 5c that can freely circulate between a and 5b and are divided into a pair of left and right parts, and a position detection member 7 for the bag 6 carried in is arranged on the belts 5c, 5c. Ru. A workpiece slide plate 8 is fixed in the gap between both conveyors 1 and 5 for connecting both conveyors 1 and 5 and sliding the workpiece 2 on the conveyor 1 into the bag body 6 on the conveyor 5. An air injection nozzle 8a is provided on the lower surface of the front end of the slide plate 8 facing the feeding conveyor 5 side, and a grip portion 8b that protrudes downward is formed behind this, and this grip portion 8b will be described later. A position detecting member 9 for the bag 6 is disposed on one side below the slide plate 8.

Both conveyors 1 and 5 and work slide plate 8
A work pushing member 1 that can freely circulate above the conveyors 1 and 5 in parallel with the slide plate 8
0 is placed. The workpiece pushing member 10 is for sliding the workpiece 2 mentioned above from the discharge end of the transfer conveyor 1 on the upper surface of the workpiece slide plate 8 and pushing it into the bag body 6 on the charging conveyor 5. In the illustrated example, as shown in the first and second figures, a pair of chains 10c, 10c in which two pushing members 10, 10 are stretched between a pair of left and right drive sprockets 10a, 10b so as to be able to circulate freely. It is fixedly installed on support brackets 10d and 10d installed between the workpieces 2 and 2, so that the workpieces 2 can be moved together by pushing the rear end surface of the workpieces 2, and the slide plate 8 and the charging conveyor 5
Above, although not shown, the bags 6 on the bag charging conveyor 5 are mounted on a bracket 12 that can be rotated up and down about a pivot 11 that is rotatably supported via a suitable bearing. an air injection nozzle 13 that blows pressurized air into the air, and an air injection nozzle 13 arranged in front of the nozzle 13;
A support plate 14 is provided which tightly supports the upper surface of the bag body 6 on the conveyor 5 through suction negative pressure caused by air injection from the nozzle 13. When reciprocating the pivot 11, the pivot 1
A swing link 15 is attached to one side of the driven sprocket 1 in the work pushing member 10 described above.
A drive gear 17 is provided at one end of the support shaft 16 of the camshaft 18, and the gear 17 is meshed with a gear 20 of a cam 19 provided on the camshaft 18. By engaging with the circumferential surface, the swing link 15 swings, thereby rotating the bracket 12 up and down through the reciprocating rotation of the pivot shaft 11, thereby moving both the air injection nozzle 13 and the support plate 14. It is provided so that it can be set into the bag 6 and evacuated. Also the first
As shown in the figures and FIG. 4, the support plate 14 of the bag body 6
A pair of bag opening members 21, 21 are movably disposed on the bag conveyance start end side of the loading conveyor 5, sandwiching both sides in the longitudinal direction. The opening members 21, 21 are
In particular, as shown in FIG. 4, the bag body 6 used in the present invention,
That is, it engages in a removable manner on both sides in the width direction of an opening 6a provided with a flap 6b in a bottomed opening bag 6 having a substantially quadrilateral shape, so as to properly open the opening 6a. Opening member 2
1 and 21 are each fixed on a belt 21c stretched between a driving pulley 21a and a driven pulley 21b so as to be able to circulate and be forwarded in forward and reverse directions.
By reciprocatingly rotating along the circumferential side of the drive pulley 21b as shown in the fourth figure, the bag body 6 is removably engaged with both ends of the opening 6a of the bag body 6. The opening 6a can be properly shaped and kept open. Furthermore, in the present invention, as shown in FIGS. 1 and 2, a bag transfer conveyor 22 is provided below the discharge side of the transfer conveyor 1 that is in contact with the workpiece slide plate 8, and intersects with the conveyor 1 in a direction perpendicular to the conveyor 1. It will be placed in The conveyor 22 consists of a belt 22c stretched between a driving pulley 22a and a driven pulley 22b. At the position of the belt 22c directly facing the belt 1c on the transfer conveyor 1, between one side corresponding to the workpiece loading conveyor 5 and the loading start end of the loading conveyor 5, A conveyor 23 for supplying the bags 6 is provided. Same conveyor 2
3, as shown in FIGS. 2 and 3, the drive pulley 5a of the charging conveyor 5 is used as a common drive pulley, and the drive pulley 5a and the belt 22c of the bag transfer conveyor 22 are connected to one side of the belt 22c. Belts 23b, 23b, which are divided into two as shown in the third figure, are stretched between the driven pulley 23a and the driven pulley 23a so as to be able to circulate freely, and the belts 23b and 23b are stretched from the charging conveyor 5 to the transfer conveyor 22. The supply conveyor 23 is arranged so as to be tilted downward, and the entire supply conveyor 23 is swingably provided about a support shaft 24 on which the driving pulley 5a of the charging conveyor 5 rotates.
The driven pulley 23a side of the conveyor 23 is vertically movable, and corresponding to the driven pulley 23a, the front end of the discharge end (driven pulley 1b side) of the work transfer conveyor 1 is positioned at a lower position as shown in FIG. And as shown in the third figure, the Nitsu Pro roller 2
5 is rotatably arranged and the driven pulley 2 is raised.
3a, the bag body 6 can be conveyed to the charging conveyor 5 side by the supply conveyor 23, and the bag body 6 can be conveyed to the charging conveyor 5 side by the bag body transfer conveyor 22.
The position detecting members 9, 9 for the bag 6 described above in FIG. 2 are disposed between the bag supply conveyor 23 and the bag supply conveyor 23, which are opposed to each other. Further, a pair of belts 23b, 23 on the supply conveyor 23
As shown in FIGS. 2 and 3, the flap holding member 26 is placed at a position corresponding to the gripping portion 8b of the flap 6b of the bag 6 on the work slide plate 8, using the gap between is vertically movable, and the flap 6b of the bag 6 set at the loading position can be held by the member 26 and the gripping portion 8b.

Automatic loading of the workpiece 2 into the bag body 6 in the bagging device according to the present invention is performed as follows.

As shown in FIGS. 1, 2, and 5, firstly, the transportation and supply of the bags 6 will be described. The bags 6 placed on the belt 22c of the bag conveyor 22 are
In the horizontal position shown in FIG. 1, the belt 22c is moved in the direction of the arrow in the figure, and the front end of the bag 6 in the traveling direction protruding from one side of the belt 22c is detected by the detection members 9, 9. At the same time, the bag supply conveyor 23 is driven, and the driven pulley 23a side of the conveyor 23, which is located below the part of the bag body 6 protruding from one side of the belt 22c, as shown in the second diagram, supplies the bags. Along with the upward rotation of the supply conveyor 23 using the drive shaft 24 of the body loading conveyor 5 as a rotation fulcrum, the protruding portion of the bag body 6 is supported by the belt 23b and moves along with it, as shown in the fifth figure. The protruding portion of the bag 6 is held between the belt 23b and the nip roller 25 in this manner. Therefore, by driving the bag charging conveyor 5 and also driving the supply conveyor 23 through the common use of the drive pulley 5a, the bags 6 are transferred to the charging conveyor 5 by the belt 23b as shown in the fifth figure. It will be sent onto the belt 5c. Next, as shown in FIG. 6, the front end of the bag 6 moving on the belt 5c of the charging conveyor 5 advances to a predetermined position and is detected by the detection member 7, and the belt of the bag supplying conveyor 23 advances to a predetermined position. The flap holding member 26 disposed between 23b and 23b rises, and the flap 6b at the opening 6a of the bag 6 is a gripping portion formed on the lower surface of the fixed work slide plate 8 located above. 8b, and further advancement of the bag body 6 is stopped. At the same time, pressurized air is injected from below into the stopped bag body 6 by an air injection nozzle 8a provided on the lower surface of the front end of the work slide plate 8, and the swinging link 15 is caused to swing by the cam 20. As the pivot 11 rotates, the bracket 12 rises, and the support plate 14 of the bracket 12 and the air injection nozzle 13 rise from the position shown in FIG. 5 to the position shown in FIG. The pressurized air jet is directed into the bag body 6 from the opening 6a of the bag body 6, and the upper surface of the bag body 6 is brought into close contact with the support plate 14 through the suction negative pressure generated on the support part 14 side by this air jet. While being supported, the bag body 6 opens and expands due to the entry of pressurized air from the air injection nozzles 8a and 13, thereby forming an internal space. But belt 2
1c and 21c, the opening 6a of the bag body 6 is opened and expanded by rotating from the solid line position to the dotted line position in the figure.
It engages and holds both inner edges in the width direction of the
As a result, the bag 6 completes the preparatory operations of opening and expanding the bag 6 for loading the workpiece 2 and keeping the opening 6a open. After the air is injected by the air injecting nozzles 8a and 13, the bag supply conveyor 23 rotates downward in a downwardly inclined manner and returns to its original position, as shown in FIG.

On the other hand, on the side of the conveyor 1 for transporting the workpiece 2, the workpiece 2 placed on the belt 1c is driven by the conveyor 1 and moves toward the workpiece slide plate 8 side via the guides 3 for straight movement. The forward end of the workpiece 2 is detected by the detection member 4, and the workpiece pushing member 10 is driven, and the workpiece starts to travel via the drive sprocket 10a, the driven sprocket 10b, and the chain 10c, and is transferred to the transfer conveyor 1.
The workpiece is moved to the upper surface side, and as the workpiece pushing member 10 is driven, the support shaft 16 of the driven sprocket 10b is rotated, and the cam 20 is rotated through interlocking gears 17 and 19. The lifting and lowering of the bracket 12 on the side of the support plate 14 and the air injection nozzle 13 described in 1.
The engagement with both inner ends of the opening of the bag body 1 is also started by the detection by the detection member 4.

As the opening members 21 and 21 are engaged with the bags, the air injection from the air injection nozzle 8a and the air injection nozzle 13 is stopped, and the workpiece 2 advances to the discharge end of the transfer conveyor 1 as shown in FIG. , the workpiece pushing member 10 that has come around to the rear end of the workpiece 2
are engaged, and the workpiece 2 is moved by the movement of the pushing member 10.
is pushed into the bag 6 through its opening 6a (via the workpiece slide plate 8), and the support plate 14 air injection nozzle 13 rises, and the bag 6 into which the workpiece 2 is loaded is The bag body 6 is transported by moving on the belt 5c by the work conveyor 5, and at this time the flap 6a of the bag body 6 is slid from the clamping surface between the gripping part 8b of the work slide plate 8 and the flap clamping member 26. It is brought out. Thus, after
The flap holding member 26 is moved down and retracted, and the bag opening members 21 and 21 are also rotated and retracted from the dotted line position in FIG. As a result, the bag pushing member 10 passes under both members 14 and 13 without any trouble, runs around following the conveyed bag body 6, and prepares for the next operation. Afterwards, the support plate 14 and the air injection nozzle 13 are lowered to the old position, returning to the state shown in FIG. At this time, two pushing members 0 are provided, one of which is the pushing member 10.
When the pushing member 10 reaches the discharge end of the charging conveyor 5 as shown in the second figure after the pushing is completed, the other pushing member 10 moves to the transfer conveyor 1 side as shown in the figure, and the next pushing is carried out by this pushing. This will be done by the member 10.

As described above, according to the present invention, in the order shown in FIGS. 5, 6, and 7, the bag 6 is fed to the loading position, set, opened and expanded for inserting the workpiece, and the flap is opened and opened. The preparation operation by holding the bag 6b is automatically performed, and the loading of the workpiece 2 into the bag 6 is continuously repeated synchronously and automatically.

In this embodiment, a conveyor 22 for transporting the bags 6 is used.
When supplying the already made bag body 6 to
Although it has been explained that the bags 6 are loaded one by one, this can be done by connecting an automatic bag making means to the inlet end of the transfer conveyor 22 (on the driven pulley 22b side), as illustrated in FIG. It is also possible to make a bag and immediately transfer it to the conveyor 22 side. That is, in FIG. 8, a plastic film 27 is used as the material for the bag body 6, and a plastic film 27 wound into a roll is freely unfolded and fed out via a pivot shaft 28, and a plastic film 27 is placed in the middle of the movement path of the film 27. For example, a triangular plate 29 for half-folding is arranged upright, and nip rollers 30, 30 are arranged in front of the triangular plate 29, and the triangular plate 29 folds the film 27 in half in the width direction and folds the film 27 in half in the width direction and narrows the narrow portion 27a. The nip rollers 30, 30 are used as a half-folded film having wide width portions 27b of different widths.
The bags are fed onto the belt of the bag transport conveyor 22 mentioned above through the rotation of the bags, and further through the path of the guide rollers 31, 32, the dancer rollers 33, the guide rollers 34, and the nip rollers 35, 35. The bag 6 used in the present invention can be obtained by cutting the half-folded film 27 at regular intervals in the width direction. That is, the half-folded fold part becomes the bottom, each fusing part in the width direction becomes both sides, and the opening part 6a is formed by each open end of the wide part 27b and the narrow part 27a, and the protruding part of the wide part 27b Part is flap 6b
The bag body 6 is continuously and automatically obtained, and the bag body 6 is transferred from the transfer conveyor 22 to the supply conveyor 23.
According to this, the plastic film 27 can be fed one after another onto the charging conveyor 5.
This also enables a series of automatic operations in which the bag 6 is manufactured and the workpiece 2 is immediately automatically loaded into the manufactured bag 6.

In the bagging device of the present invention, the target work 2
Conveyor 1 for transporting workpieces that continuously sends the workpieces at regular intervals
A charging conveyor 5 for inserting the workpiece 2 into the bag body and a workpiece slide plate 8 are arranged in series, whereas the target bag body 6 is placed between the conveyor 5, the workpiece slide plate 8, and the workpiece slide plate 8.
A conveyor 22 for transporting bags arranged in a direction perpendicular to 1.
The bags 6 on the same conveyor 22 are fed one by one by an inclined bag supply conveyor 23 in the same direction as the charging conveyor 22. Therefore, the bag body 6 has its opening 6 on the same side as the traveling direction of the workpiece 2.
Since the bag body 6 is set on the conveyor 5 with the direction a facing, if the bag body 6 set at the charging position on the charging conveyor 5 is loaded with the workpiece 2 and moved from the charging position, the bag body 6 is immediately loaded with the workpiece 2 and moved to the charging position. The next bag 6 can be set in the loading position, and continuous bag-filling work can be achieved with high efficiency without the risk of time loss or dead stock for both the bag 6 and the workpiece 2.
In other words, unlike the conventional method, where a large number of bags are accumulated and workpieces are sequentially loaded from above, there is no need to replenish the bags or to interrupt the work in between. In cases where workpieces are sequentially loaded into the most advanced bag on the conveyor, all subsequent bags are temporarily stopped until the opening of the bag in the most advanced bag and the loading of the workpieces are completed. Even for the system, the present invention does not require such intermittent operation, and the bag transfer conveyor 22, the bag supply conveyor 23, the workpiece transfer conveyor 1, and the charging conveyor 5 are all constantly driven. The time required for a series of loading operations, including setting the bag 6 on the loading conveyor 5, opening and expanding, and inserting the work 2, may be determined by the time required for the workpiece transfer conveyor 1 and the bag transfer conveyor 22. The respective transfer speeds in each workpiece 2 bag 6
If the arrangement intervals are set synchronously, there will be no time loss or dead stock in each process, and as a result, continuous and consistent automatic flow work will proceed without any stagnation, as shown in Fig. 8. When used in conjunction with automatic bag making means, even more rational automation can be obtained, eliminating the trouble of time interference between the workpiece 2 and the bag body 6, and enabling faster, smoother and more reliable bagging work. It is excellent as a bagging machine for various products, and has great versatility as an automatic bagging machine for various products.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of the device of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a plan view of the main part of the bag supply conveyor, and Fig. 4 is a plan view of the main part of the bag opening member. , Figures 5, 6, and 7 are explanatory diagrams of each operating state showing the bag opening/expansion shaping and workpiece insertion operations, and Figure 8 is a slope view of an embodiment of the bag transfer conveyor to which the bag making means is attached. It is. 1... Conveyor for transporting workpieces, 2... Workpieces,
4, 7, 9...detection member, 5...charging conveyor, 6...bag body, 6a...opening, 6b...flap, 8...work slide plate, 10...work pushing member, 8a , 13...Air injection nozzle, 8b
... Flap gripping section, 14 ... Bag support plate, 21
...Opening member, 22...Conveyor for transporting bags, 2
3... Bag supply conveyor, 25... Nip roller, 26... Flap holding member.

Claims (1)

[Scope of utility model registration request] A work slide plate is provided which is connected to the delivery end of the conveyor for transferring the workpieces to be loaded, and has an air injection nozzle for the bag flap and a flap gripping part on the lower surface, and is connected to the workpiece slide plate to transfer the workpieces to be loaded. Bag loading conveyors are arranged in series, and above the workpiece transfer conveyor, workpiece slide plate, and workpiece loading conveyor, an endless belt with workpiece pushing members arranged in rows is arranged so as to freely circulate. , an air injection nozzle into the bag, a support plate on the top surface of the bag, and an opening member that removably engages with both sides of the bag opening are provided above the work slide plate and the work loading conveyor; A conveyor for transporting workpiece loading bags is disposed below the delivery side of the workpiece conveyor, perpendicular to the workpiece conveyor, and one side of the bag transporting conveyor is connected to the workpiece loading conveyor. A bag supply conveyor is disposed in a connected and inclined manner between the movement start end of the workpiece conveyor, and a bag body flap is provided at an intermediate position of the bag body supply conveyor in correspondence with the flap gripping portion of the work slide plate. A workpiece bagging device characterized in that a clamping member is arranged so as to be movable up and down.