JPH0699906A - Device for packaging can lid - Google Patents

Abstract

PURPOSE:To place can lids in a pile into a bag and package them without tumbling them. CONSTITUTION:When can lids W in piles are loaded on a conveying way 21, the front sides of the can lids W are held by compressed air blown from a through-hole and a rivet and the rear sides of the can lid W are held by a rod 22a of a cylinder 22. Thereby, the can lids W in piles are kept from separating from each other. A bag is kept open by a bag opening device 23, and a rod-less cylinder 20 is brought in action to put the bag over the can lids W on the conveying way 21. Thus, the can lids W can be put into the bag as they are piled, and prevented from tumbling down or falling off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a can lid packaging apparatus for automatically packaging can lids in a stacked state.

[0002]

2. Description of the Related Art Generally, aluminum cans and steel cans for filling beverages and the like are sealed after they are filled with a filling material. Therefore, the lids of these cans are manufactured separately from the cans, and It has been sent to the filling plant.

When manufacturing and shipping the above-mentioned can lid,
It is necessary to package a predetermined number of can lids in a stacked state from the viewpoint of easiness of handling in the subsequent can-sealing step and problems in hygiene management. In the packaging of this can lid, conventionally, after mechanically opening a packaging bag, a large number of laminated can lids are manually dropped from above, or the can lid is opened. From a cylindrical hopper that stacks vertically and stores
It was dropped on a bag held on the outer periphery of the hopper. Then, the mouth of the opened bag is folded and sealed. For this, the operator manually performs the folding work, or the following automatic folding device is used.

This device, as shown in the specification and drawing of Japanese Patent Application No. 62-221775, has a bag mouth of a cylindrical bag having a can lid housed therein, one side of which is the other side. A first folding mechanism for crushing into a substantially semi-cylindrical shape so as to make contact, a second folding mechanism for folding one side of the semi-cylindrical crushed portion of the bag mouth toward a substantially diameter side of the bag mouth, and A third folding mechanism that folds the tongue-shaped portion left on the other side by the folding of the second folding mechanism toward the substantially diameter side of the bag mouth, and a superposition formed by folding the tongue-shaped portion by the second folding mechanism. A fourth folding mechanism to be inserted into the bag, and before being folded by the second folding mechanism, the bag is positioned on the bag mouth closed by the first folding mechanism, and is inserted into the bag before the tongue is inserted by the fourth folding mechanism. A base plate for lifting the edge to open the overlapping portion, It is made of a.

[0005]

By the way, the can lid has a substantially disk shape. Specifically, the can lid is slightly dropped into the open end of a can having a bottomed cylindrical shape to engage with the can. Since it is caulked and fixed to the opening edge, the peripheral edge of the surface of the can lid is once slightly raised, and the outer edge is bent outward and downward to form a shallow dish. Also,
After the can lid body is press-formed into the above shape, a minute notch that becomes the opening of the can at the time of use, and a shallow step processing on the reinforcement around the notch, and further the notch at the center of the surface plate A tab for opening the is also attached. Therefore, as described above, a predetermined number of can lids, for example, 3
When the stack of about 00 sheets is stacked, the respective lids are in a loosely fitted state and are not tied to each other, so that they are extremely slippery and unstable.

[0006] Therefore, if a large number of can lids are stacked in a bag and the can lids are separated from each other during the loading, the stacked state is broken, and some can lids are inside the bag. There is a possibility of tilting. Therefore, when placed in a bag and then laminated again, the front and back of some can lids may be reversed, and if this is used at a filling factory for beverages, etc., the device will be hindered at the canning line, etc. This causes a problem such as the supply of the can lid body being stopped. In addition, in the case of manually inserting the can lid into the bag and packaging it, it has been extremely difficult to reduce the manufacturing cost.

The present invention has been made in view of the above circumstances, and an object of the present invention is to stack a predetermined number of can lids in the same direction so as to surely perform automatic packaging without inverting. It is to provide a device for packaging a lid.

[0008]

SUMMARY OF THE INVENTION A packaging device for a can lid body according to the present invention is a conveyance path on which a stack of can lid bodies is placed, and a bag provided facing the conveyance path in an opened state. A bag opening device for holding and a drive means for relatively moving the bag opening device and the transfer path to cover the bag opened and held by the bag opening device on the can lid on the transfer path are provided. A support mechanism that extends in a substantially horizontal direction and that supports both ends of the stacked can lids placed on the transport path in the stacking direction in the transport path to prevent the stacked can lids from separating from each other. It is configured to be attached.

[0009]

The stacked can lids are placed on the transport path with the stacking direction facing the extension direction of the transport path. At this time,
Both ends in the axial direction of the can lid are supported by the support mechanism. This can prevent the can lid bodies in the stacked state from being separated from each other. On the other hand, the bag opening device holds the bag in an open state so as to face the transport path. Then, the bag opening device and the conveying path are brought relatively close to each other by the driving means, and the bag opened and held by the bag opening device is covered on the can lid on the conveying path. This allows the can lid body to be inserted into the bag while maintaining the initial stacked state.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a can lid packaging device according to the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, this apparatus is generally provided with a machine body 1 and a work supply mechanism for carrying a work W, which is a can lid body, to be packed into a packing position in a predetermined posture. F1; a packaging mechanism F2 for inserting the carried work W into a bag; a folding and discharging mechanism F3 for folding the bag of the packed work W; and a packaging material supply mechanism F4 for supplying the bag to the packaging mechanism F2. It In addition, FIG.
Although FIG. 2 shows that the work supply mechanism F1 and the packaging mechanism F2 are generally provided in three series, one series of each of these mechanisms will be described in detail below along with the processing steps of the work W.

The work supply mechanism F1 has a carry-in path 10 into which the substantially disk-shaped works W are loaded in a stacked state with the board surface facing the traveling direction, and a work W in the stacked state from the carry-in path 10. , A predetermined number of grips, and the packaging mechanism F2 described above.
And a remounting device 11 for remounting. Work W
Although not shown in the figure, the feed-in passage 10 is sequentially advanced in a stacked state on the above-mentioned carry-in passage 10 by being fed in from the processing step of the can lid body. FIG. 8 shows a sectional configuration of the carry-in passage 10. The carry-in path 10 includes a pair of side walls in which rails 101 each having a V-shaped cross section are arranged substantially horizontally on a bottom frame 103 attached to the machine body 1 and which are erected on both side edges of the bottom frame 103. A pair of guides 102, 102 made of an elastic member such as rubber extend substantially horizontally from the upper ends of the rails 104, 104 to the sides of the bottom rail 101. The guides 102, 102 are arranged with a gap slightly smaller than the diameter of the workpiece W, and are arranged on the bottom rail 101.
The peripheral edge of the work W carried over is supported from the diametrical direction.

Then, in the middle of the carry-in path 10, when the works W are stacked in the horizontal direction as shown in FIGS. 1 and 9, in order to detect the passage of a predetermined number of works W, A sensor 108 for detecting irregularities caused by the peripheral edge of each work W is attached. On the other hand, a work distribution device 105 is provided in parallel with the bottom rail 101 above the carry-in path 10 along the traveling direction of the work W from the attached position of the sensor 108. This is because the position of a predetermined number of works W detected by the sensor 108, for example, the rear end of the 300th work W is set to 1
It is classified as a packaging lot.

The work allocating device 105 comprises a machine body 1
Cylinder device 105s suspended from the cylinder device 1
The arm 106 has a claw 106p attached to 05s and sharply formed downward, and a cylinder device 106s for moving the arm 106 up and down.
Then, at the stop position of the work W divided by the sorting device 105, a cylinder device 101s is provided at the front end portion of the carry-in path 101 in the approach direction toward the rear in the approach direction. The cylinder device 101s buffers against the overshoot of the cylinder device 105s.

Further, FIG. 10 shows a side surface thereof, and FIG. 11 shows a cross section thereof, of a transfer device 11 for transferring a predetermined number of stacked works W from the carry-in path 10 to the packaging mechanism F2. ing. In this transfer device 11, a work gripping portion 112 is suspended by bearings 111b and 111b between a pair of guide rails 111 and 111 that are installed above the carry-in passage 10 in a direction intersecting with the carry-in passage 10.
It is formed so as to be movable in the horizontal direction.

The work gripping portion 112 is provided with a pair of elongated gripping plates 112a arranged in parallel with the carry-in passage 10 so as to sandwich a predetermined number of the works W in the stacked state from the outer peripheral side thereof in the radial direction. , 112a, and air chuck devices 112t and 112t. For more information,
Further, the workpiece gripping portion 112 includes the bearing 111b,
A cylinder device 113 mounted on a guide plate 114 suspended between 111b and having a piston rod protruding downward, and guide rods 115 and 115 slidably inserted into the guide plate 114, are in a horizontal state. It is suspended so that it can be lifted and lowered while maintaining. Further, as shown in FIG. 11, the pair of grip plates 112a, 112a of the work grip part 112 have slip stoppers 112r, 112r made of rubber pieces or the like fixed to their inner walls.

As shown in FIG. 1, the remounting device 11 includes sprockets 112S and 112S provided on both upper sides of the machine body 1 in the width direction (vertical direction in FIG. 1).
The work W in the carry-in path 10 is transferred horizontally to the packaging mechanism F2 by being horizontally moved as described above by the motor 112m that is locked to the timing belt 112b that is run around to the sprocket 112s. is there.

As shown in FIG. 2 which is a side view and FIG. 4 which is an enlarged view of a main portion thereof, the packaging mechanism F2 for inserting the workpiece W carried in by the workpiece supply mechanism F1 into the bag is replaced with the above-mentioned replacement. The transport path 21 on which the selected work W is placed and serves as a packaging table, the cylinder device 22 (support mechanism) arranged at one end of the transport path 21, and the transport path 2
1. A bag opening device 23 arranged on the other end side of 1, a packaging base 20 in which these are arranged, and a rodless cylinder device (driving means) 24 for relatively moving the bag opening device 23 and the transport path 21. It is composed mainly of and.

By the way, the transport direction of the work W after packaging in the packaging mechanism F2 is the same as the approach direction of the work W in the carry-in passage 10 in order to simplify the structure of the apparatus. ing. After that, the conveyance direction of the work W to the folding and discharging mechanism F3 is the same. The packaging base 20 is adjacent to the carry-in path 10 and is in the carry-in path 10.
Is provided in parallel with and the front end in the transport direction is fixed to the machine body 1 by the spacer block 201.

Further, the packaging base 20 has a two-stage structure of an upper stage portion 20a and a lower stage portion 20b due to the alignment of the transport path 21 and the bag opening device 23 arranged on the packaging base 20. . Of these, the cylinder device 22 mounted on the upper stage portion 20a toward the front in the transport direction supports the rear end surface of the stacked works W and sends the works W forward in the transport direction. Is the work W
A support member 22a having soft elasticity such as MC nylon or urethane rubber is attached so as not to damage the. The end of the transport path 21 has an upper step 20a.
Is attached to the upper step portion 20a, extends forward from the upper step portion 20a in the transport direction, and is located above the lower step portion 20b.
The transport path 21 also serves as a guide for the work W when the placed work W is packaged.

On the lower surface near the front end of the transport path 21,
A rivet (support mechanism) 21a is fixed to a position where it comes into contact with the front end surface of the can lid W in a stacked state placed on the transport path 21. In front of this rivet 21a,
About 1 mm in diameter that penetrates the lower surface of the transport path 21 in the thickness direction
Through hole (supporting mechanism) 21b is formed. As shown in FIG. 5, the through-hole 21b has a can lid W at the upper end.
It is inclined toward the direction. This inclination angle is 45 ° in this example. One end of a pipe 21c made of a synthetic resin tube is attached to the lower end of the through hole 21b. At the other end of this pipe 21c, the pipe 21
A pump (not shown) for supplying compressed air is connected to the inside of c. In the apparatus of this example, by supplying compressed air into the inside of the pipe 21c, compressed air can be blown from the through hole 21c toward the front surface of the laminated can lid W. The blowing pressure of this compressed air is preferably about ² to 3 kgf / cm ² .

On the other hand, the bag opening device 23 provided in the lower stage portion 20b of the packaging base 20 is provided with a rodless cylinder device 24 provided in parallel with the carrying direction. The cylinder device 24 can relatively move the bag opening device 23 and the transport path 21 to cover the work W with the bag.

A support plate 231 is attached to the mover 24b of the cylinder device 24, and the bag opening device 23 is provided via the support plate 231. Further, a rail 231b is additionally provided on the support plate 231, and the bag opening device 23 is mounted on the rail 231b. A cylinder device 231s is fixed to the support plate 231, and the tip of the piston rod is connected to the lower portion of the bag opening device 23. Thereby, the bag opening device 23
Are formed so as to be movable along the transport direction and capable of double-acting.

FIG. 12 is a side view of the bag opening device 23, and FIG. 13 is a front view of the bag opening device 23 as seen from the rear side in the transport direction. The frame 230 has an octagonal rectangular tubular shape when viewed from the front.
And a pair of claws 232 and a sandwiching plate 233 that hold the mouth of the bag open, and a work support 234 that supports the end surface of the work W on the front side in the carrying direction of the work W.

Further, the frame 230 is provided with an inner frame 230a, which is formed in the shape of an octagonal cylinder having a diameter smaller than that of the frame 230, in the cylinder thereof. Then, on the outer peripheral surface of the inner frame 230a, the cylinder devices 232s, 23
2s are provided by projecting those piston rods into the cylinder of the inner frame 230a, and the claws 232 and 232 are attached to the tips of the respective piston rods. Reference numeral 232b is a guide rod that is inserted into the inner frame 230 to maintain the posture of the claw 232 parallel to the transport direction and move it back and forth. On the other hand, on the front side in the transport direction of the outer peripheral surface of the inner frame 230a, the cylinder devices 233s, 2
33s is provided in this cylinder with the piston rod protruding in the same manner as described above, and the pinch plate 2 is attached to the tip of the piston rod.
33 is attached.

The claw 232 and the sandwiching plate 2 which are formed so as to be movable back and forth toward the horizontal central axis of the inner frame 230a.
8 sets of 33 are arranged as a whole for each peripheral surface of the inner frame 230a, and the claws 232 are inserted into the mouth of the bag which is supplied from the front in the transport direction and slightly opened, and is opened in a substantially circular shape. The opening of the opened bag is held by pressing the holding plate 233 from the outer surface of the bag to hold the bag securely.

As for the mouth of the held bag, the nail 232 is used.
Although it can be opened by the sandwiching plate 233, the bag is still crushed over the entire length of the bag. Therefore, in order to smoothly cover the work W with the bag, the nozzle 236 is provided rearward in the transport direction at a position separated from the center axis in the inner frame 230a in the radial direction by a distance slightly longer than the radius of the work W. ing. The nozzle 236 is provided with a pressurized air conduit (not shown) that is separately provided, and blows air to supply air into the inside of the bag to expand the entire bag.

Further, the work support 234 is a cylinder device 235s attached to the top of the frame 230 toward the rear in the conveying direction, a stay 235 suspended by the tip of the piston rod, and the stay 23.
Cylinder device 234s mounted downward on 5
And a horizontal bar 234b attached to the tip of the piston rod of the cylinder device 234s and directed rearward in the transport direction on the transport path 21 side of the frame 230, that is, on the rear side in the transport direction.

A cylinder device 237 for temporarily supporting the front end of the transport path 21 in the transport direction from the lower surface thereof is attached to the lower portion of the frame 230 on the rear side in the transport direction. This is because the transport path 21 has one end on the rear side in the transport direction attached to the upper stage portion 20a of the packaging base 20, while the other end on the front side in the transport direction is open, so that the stacking is performed. The workpiece W in the state is placed or is for supporting the transport path 21 when it is sent out after packaging, and its piston rod is arranged so as to be able to advance and retreat upward.

A folding and discharging mechanism F for folding the mouth of the stacked work W covered with the bag by the above-mentioned packaging mechanism F2 and moving it to a predetermined discharging position.
As shown in FIGS. 1 and 2, 3 is located forward of the bag opening device 23 in the packaging mechanism F2 in the transport direction. Further, the folding and discharging mechanism F3 has a package support base 30 for supporting the fed work W in the stacked state on its bottom surface.
And a folding device 31 suspended above the package support 30.

The package support base 30 faces the bag opening device 23 of the above-mentioned packaging mechanism F2 with the bag opening device 23 interposed therebetween, faces the bag opening device 23, and is in the horizontal state. It is installed in a serial position with. The cross section thereof has the shape of a ridge formed in an arcuate concave surface so as to engage with the bottom surface of the fed work W, as shown in FIG.

Further, as shown in FIG. 15, the package support base 30 is divided into four in the longitudinal direction, and a cylinder device is attached to each of them. By the way, after folding the mouth of the bag on the package support base 30, the work W, which is a package, is moved in a direction orthogonal to the feeding direction from the packaging mechanism F2 in plan view. For the sake of convenience, the movement path of the work W to the package support base 30 is shown in the front and the rear in the transport direction. Then,
The divided package support base 30 has a front end support 306, a center support 305, a rear end support 304, and an opening support 301 arranged in this order from the front in the transport direction.

Each of these supporting portions is attached to the machine body 1 in sequence through a cylinder device. That is, the front end support portion 306 is the cylinder device 306s,
The center support portion 305 is a cylinder device 305s, the rear end support portion 304 is a cylinder device 304s, and the opening support portion 301 is a cylinder device 301s and 302s.

The package support base 30 divided in this way
When the work W covered with a bag is received, the whole goes down and up, and when the mouth of the bag is folded, a part of them moves up and down independently. Further, the opening support portion 301 assists the folded portion of the bag when the bag is folded, and when the empty bag is supplied to the bag opening device 23, the opening support portion 301 does not open the mouth of the bag that is in close contact. It also has the function of opening a minute. Therefore, the opening supporting portion 301 is provided with the suction device 301v. The suction device 301v is usually a suction pad that is connected to a vacuum generation device attached to an intake line of an instrumentation that controls pressurized air to be supplied to a cylinder device, and sucks outside air to suck an article. .

Further, as shown in FIGS. 1 and 16, on both sides of the front end support portion 306 of the package support base 30, the front ends of the fed work W are stopped and inserted into a bag. In order to press and compress the transported work W before folding the bag mouth,
A front end pressing portion 308 that serves as one pressing mechanism is provided. The front end pressing portion 308 is a cylinder block 309, 309 that horizontally advances and retracts a pair of claws 309p, 309p from the side above the all-end supporting portion 306.
And bases 308b and 308b slidably formed by mounting these cylinder blocks 309 and 309. In addition, the pair of bases 308b, 308b
Are moved in the transport direction, that is, in the longitudinal direction of the package support base 30, by the cylinder devices 308s and 308s, respectively.

Further, as shown in FIG. 1 and FIG. 17, the works W are stacked on both sides of the rear end support portion 304 of the package support base 30 with the board faces in the carrying direction.
At the height of the center position of the pair of cylinder devices 307s and 307s that support the work W, which is a package, from both side surfaces in the radial direction, and bars 307b and 307b attached to the tip ends of the cylinder devices. A side presser 307 is provided. This side holding 307
Is for preventing the work W sent from the packaging mechanism F2 and located at the rear end of the package from falling over while the mouth of the bag is folded.

On the other hand, as shown in FIG. 18, the folding and discharging mechanism F3 folds the mouth of the bag and the folding device 31 for moving the fold of the wrapping body to a predetermined position. Is formed so as to be movable upward and downward in a direction orthogonal to the transport direction, that is, a direction orthogonal to the longitudinal direction of the package support base 30.

In the folding device 31, as shown in FIG. 1, a pair of guide rails 317 and 31 are provided above the machine body 1 in the width direction (vertical direction in FIG. 1).
7, the stay 311 shown in FIG.
It is suspended in parallel with the above-mentioned conveyance direction via b and 317b,
A suspension frame 312 is suspended from the stay 311. A cylinder device 313s is attached to the suspension frame 312 with a piston rod projecting downward, and its tip is connected to the elevating stay 313. The elevating stay 313 is a slender plate-like member, is provided in parallel with the stay 311 and is inserted into the suspension frame 312.
4, 314 is adapted to move up and down while maintaining its horizontal posture.

Further, a pair of cylinder devices 310s and 310s are attached to both ends of the lower surface of the elevating stay 313 with their piston rods facing away from each other. The cylindrical members 310, 310 are suspended at the tips of the piston rods with their open ends facing each other. The pair of cylindrical members 310, 310
Are attached to the front and rear end surfaces of the work W covered with the bags in a laminated state, respectively, and are formed to have a slightly larger diameter than the work W.

Further, a pair of notches 310c, 310 facing each other in the diametrical direction and in the horizontal direction are formed in the one cylindrical member 310 arranged on the rear side in the conveying direction (on the right side in FIG. 18).
c is provided. This notch 310c, 310c
Is a side presser 30 attached to the package support base 30.
It has an opening width with which a pair of seven horizontal bars 307b, 307b are engaged.

Further, below the center of the elevating stay 313, there is attached a hand 315 for auxiliary gripping the work W with the bag mouth folded while moving to the discharge position. 19a and 19b, a front view of the hand 315 in the conveyance direction of the work W up to the package support base 30 is shown.
15t and 315t hold the workpiece W in the radial direction from the horizontal direction.

As described above, in the folding and discharging mechanism F3, the work W covered with the bags in the stacked state is supported by the bottom surface of the work W fed from the packaging mechanism F2, and the folding part is folded when the mouth of the bag is folded. To temporarily support 4
A package support base 3 which is divided and is formed so as to be movable up and down.
0, and the work W is suspended vertically and vertically above the package support base 30 so as to be movable in the horizontal direction at right angles to the conveying direction from the packaging mechanism F2, and the front and rear end surfaces of the work W are fitted therein. The folding device 31 is provided with a pair of cylindrical members 310, 310. A work W, which is a package having the bag mouth folded, is shown in FIG.
The package support 30 is moved in parallel to the predetermined discharge position P provided outside the machine body 1.

Therefore, in order to move the folding device 31, the guide rails 317 and 317 described above are moved.
Is extended to the discharge position P outside the machine body 1.
The folding device 31 is locked by the timing belt 317c running around the sprockets 317p, 317p provided on both upper sides in the width direction of the machine body 1, and the timing belt 317c is driven by the motor 317m. There is.

Usually, at the discharge position P, a so-called bag sealing device is arranged to seal the mouth of the folded bag of the work W inserted into the bag by this device. Although not shown, this bag sealing device is a device in which the folded portion of the bag in which the work W is inserted is wrapped with an adhesive tape or the like to attach the folded portion of the bag to the bag body side.

By the way, in the present apparatus, the bag, which is a packaging material for packaging the stacked works W, is made of paper, a resin film, or a composite material thereof, and is processed into a cylindrical or elongated bag. Things are used. Then, as shown in FIGS. 1 and 2, the packaging material supply mechanism F4 for supplying such a bag to the above-mentioned packaging mechanism F2 is supported by the packaging body support base 30 of the folding and discharging mechanism F3. The bag W is provided in front of the work W in the transport direction when it is sent to the table 30, and includes a bag transport device 41 that transports a bag, and a bag supply device 40 that supplies the bag to the bag transport device 41.

Of these, as shown in FIG. 20, the bag supply device 40 includes the package support base 30 of the discharge mechanism F3.
To a forward direction in which the bags are separated from each other in series, and an elongated storage box 401 in which a number of flatly crushed bags are stacked in the vertical direction, and an elevating tray for sequentially pushing up the stored bags from below. And 403. FIG. 21 shows a cross-sectional structure of this bag supply device 41, and the storage box 40
The upper part of the No. 1 is opened to supply the bags one by one to the bag conveying device 41 located above it. Further, in order to push the bag up and down by the elevating tray 403, the bottom face is also opened along the longitudinal direction thereof, and in order to horizontally support the bottom face of the laminated bags, the bottom plate 401c is vertically inserted so as to be vertically movable. ing.

On the other hand, in the elevating tray 403 for pushing up the bag in the storage box 401, as shown in FIGS. 20 and 21, a plate-like member formed to have a width that can be inserted into the opening of the bottom surface of the storage box 401. In order to move up and down while maintaining a horizontal posture, a guide bar 404 is provided below the elevating tray 403.
Projections a, 404b, 404b are inserted into a fixing plate 406 attached to the machine body 1 side. The one guide rod 404a is penetrated by the drive block 405 provided on the fixed plate 406. The drive block 405 changes the rotation of a motor incorporated therein into a linear motion to move the guide rod 404a up and down at a low speed.

A sensor 408 for detecting the upper end surface of the bag is attached to the side wall of the storage box 401.
With this sensor 408, the upper surface of the bag in the storage box 401 is always kept in a predetermined position.
However, if a transparent acrylic board or the like is formed so that light can pass therethrough, a transmissive optical sensor can be used as the sensor 408, resulting in a configuration with high detection accuracy.

Further, the storage box 401 is provided with slide rails 402, 402 on both sides thereof along the longitudinal direction. The slide rail 402 includes a guide 402a attached to the machine body 1 side, a guide 402b attached to the storage box 401 side, and both guides 402a, 40
2b and a slider 402c slidably engaged with both 2b. As a result, as shown by the solid line in FIG. 20, the storage box 401 can be pulled out to the outside of the machine body 1 over the entire length of the slide rail 402, and a long bag can be easily replenished and loaded. Also, reference numeral 40
1f is a handle for pulling out the storage box 401.

Further, the bag conveying device 41 which receives the bag from the storage box 401 and conveys it to the above-mentioned packaging means F2.
Is suspended above the storage box 401, and is formed so as to be movable in the horizontal direction and movable up and down. In the bag conveying device 41, as shown in FIG. 1, a pair of guide rails 416 are provided above the storage box 401 and above the machine body 1 in the width direction (vertical direction in FIG. 1) thereof. , 4
16, the stay 411 shown in FIG.
A rodless cylinder device 412s is suspended in parallel with the longitudinal direction of the storage box 401 via 6b and 416b, and parallel to the suspension 411. Further, in the moving element 412t of the cylinder device 412s,
A horizontal arm 413 is provided along the longitudinal direction of the cylinder device 412s.
a is attached, and the suspension frame 41 is attached to the end of the horizontal arm 413a.
3 is provided. A cylinder device 415s is attached to the suspension frame 413 with its piston rod protruding downward, and its tip is connected to the elevating stay 414. The elevating stay 414 is an elongated plate-like member, and is provided in parallel with the cylinder device 412s.
The guide rods 414, 4 should be moved up and down while maintaining the horizontal posture.
14 is inserted into the suspension frame 413.

On the lower surface of the elevating stay 414, a plurality of suction devices 415, 415 in FIG. 20 are provided with their suction parts facing downward. This adsorption device 4
Reference numeral 15 is for adsorbing and holding the bags stacked in the storage box 401 one by one, and a suction device 301v attached to the opening support portion 301 in the package support base 30 of the folding and discharging mechanism F3. It has a similar mechanism.

That is, in the packaging material supply mechanism F4, the elongated bag for wrapping the stacked works W is arranged in series with the above-mentioned conveying direction from the packaging mechanism F2 to the folding and discharging mechanism F3 and at the mouth of the bag. Are stacked and stored toward the packaging mechanism F2, and a storage box 401 having an upper opening for constantly holding the upper surface of the bag at a predetermined height by pushing up the lower surface of the stacked bag, and the storage box 401. And a bag transfer device 41 for adsorbing and holding the bags one by one and lifting them, and horizontally moving the suspended bags to the bag opening device 23 of the packaging mechanism F2.

As described above, only one series of the structures of the work supply mechanism F1, the packaging mechanism F2, the folding discharge mechanism F3, and the packaging material supply mechanism F4 in this apparatus have been described.
Each of these mechanisms can be provided in a desired number in consideration of the processing capacity. For example, in FIG. 1 to FIG. 3 showing the overall configuration of this embodiment, approximately three series are provided and the packaging material is provided. In the storage box 401 of the supply mechanism F4, six units are provided in parallel to hold a larger number of bags. Further, the transfer device 11 of the work supply mechanism F1, the folding device 31 of the folding and discharging mechanism F3, and the bag transport device 41 of the packaging material feeding mechanism F4 each enable horizontal movement in the width direction of the device, and a common set is provided. It is provided.

Next, the operation of the present apparatus thus configured will be described with reference to the flowcharts of FIGS. 25 to 27 showing the main operation steps.

The work W, which is a can lid, is fed into the carry-in path 10 of the supply mechanism F1 of the present apparatus with the board surface in the traveling direction by being fed in from the processing step, etc., and a stacked state is formed on the carry-in path 10. Are successively advanced. As shown in FIG. 8, a pair of guides 1 made of an elastic member that horizontally supports the work W from the diametrical direction is formed in the carry-in path 10 with a gap slightly narrower than the diameter of the work W.
Since 02 and 102 are arranged, they are fed without falling over the horizontally arranged rail 101 having a V-shaped cross section (step 101).

The number of passages of the work W moving forward in the carry-in path 10 is counted by the sensor 108 attached in the middle of the carry-in path 10, and the preset number of one packaging lot is detected. Then, above the carry-in path 10 at the position of the sensor 108, there is provided a work allocating device 105 which is movable in the traveling direction of the work W, as shown in FIG. 9, and at this position, the allocating device 105.
The cylinder device 106s lowers the arm 106.
Since the claw 106p is provided at the tip of the arm 106, the claw 106p is inserted into the rear end surface of the predetermined number of works W to divide the continuous works W into a predetermined number. Then, the divided work W is forcibly moved to the front end of the carry-in path 10 while being locked by the pawl 106p (step 102). This carry-in route 10
Since the cylinder device 101s is provided at the end of the, the impact applied to the work W at the time of stopping can be mitigated. After that, the distribution device 105 returns to above the sensor 108 which is the initial standby position.

The predetermined number of works W moved to the forward end of the carry-in path 10 are transferred to the packaging mechanism F2 by the transfer device 11 shown in FIGS. The transfer device 11 is on standby above the forward end portion of the carry-in passage 10, and the pair of elongated gripping plates 112 a and 112 a provided in parallel with the carry-in passage 10 have the air chuck device 112.
The outer circumference of the work W on the carry-in path 10 is gripped in the radial direction by opening and closing by t and 112t (step 10).
3). The transfer device 11 is formed so as to be horizontally movable and movable up and down in a direction orthogonal to the carry-in path 10, so that the transfer path 2 of the packaging mechanism F2 can be held while holding the work W.
Translate to 1 (step 104). At this time,
As shown in FIG. 1, since the slip stoppers 112r and 112r are fixed to the inner walls of the grip plates 112a and 112a, the work W made of metal can be gripped without sliding and maintaining the stacked state. .

On the other hand, a bag opening device 2 for covering the work W with a bag.
3 is disposed in front of the lower step 20b of the packaging base 20 in the transport direction so as to be located concentrically with the center of the work W placed on the transport path 21, and the frame 230 of the bag opening device 23. The cylinder device 237 is provided on the lower rear side in the transport direction of
Is attached, and the open end of the transport path 21 facing the bag opening device 23 is supported from the lower surface thereof to prevent bending.

When the work W is placed on the transfer path 21 by the transfer device 11, the work support 234 provided in the bag opening device 23 and the cylinder device 22 prevent the work W from falling. The work support 234
Is the grip plates 112a and 112a of the above-mentioned transfer device 11.
Before releasing the grip, the frame 23 of the bag opening device 23
The cylinder device 234s, which is suspended and supported downward, protrudes from the top of the cylinder device 0s to the tip of the cylinder device 235s mounted rearward in the transport direction.
35s projects. Then, this cylinder device 234s
A horizontal bar 234b attached to the tip of the rearward side in the carrying direction supports the end surface of the stacked works W on the carrying path 21 in the carrying direction (step 20).
1).

Further, in the apparatus of this example, when the work W is placed on the transport path 21, the pump is driven to drive the through hole 21.
Compressed air is blown out from b toward the front end surface of the work W. With this compressed air, the front end surface of the work W can be pressed and supported rearward in the transport direction, and tilting of the work W can be prevented.

Further, in the apparatus of this example, since the rivets 21a are attached to the transport path 21, the front end surface of the work W placed on the transport path 21 is supported by the head of the rivet 21a, and the work W is stacked. It is possible to prevent the loosening of the state and prevent the tilt thereof.

On the other hand, since the cylinder device 22 is arranged at the upper stage portion 20a of the packaging base 20 on the rear side of the conveying path 21 in the conveying direction, the cylinder device 22 is arranged toward the front side in the conveying direction. Before releasing the work W by means of the cylinder device 22, the cylinder device 22 supports the end surface of the work W on the rear side in the carrying direction (step 202). Since the stacked works W can be supported from the front and rear end surfaces by the work support 234, the compressed air, the rivet 21a, and the cylinder device 22, the grip plates 112a and 112a of the transfer device 11 can be supported. There is an advantage that the work W does not fall on the transport path 21 even if the gripping by (2) is released (step 105). On the other hand, the transfer device 11 that has opened the predetermined number of works W in the stacked state on the transport path 21 returns to the predetermined position on the carry-in path 10 again.

By the way, a bag is supplied to the bag opening device 23 by a packaging material supply mechanism F4 shown in FIGS. As shown in FIGS. 20 and 21, the packaging material supply mechanism F
In the storage box 401 of No. 4, a large number of elongated bags are stacked with their mouths directed toward the bag opening device 23, but since the bottom surface of the storage box 401 is opened along its longitudinal direction, Through the bottom plate 401c horizontally and movably inserted into the storage box 401 from the opening, the storage box 401 is moved by the elevating tray 403 located below the storage box 401.
The bag inside is pushed up. At this time, the storage box 40
A sensor 408 is attached to the side wall of No. 1 to detect the upper end surface of the loaded bags and always keep the upper surface of the bags in the storage box 401 at a predetermined position.

The upper portion of the storage box 401 is open, and the bags stored as described above are stored in the storage box 4
01 is taken out one by one by the bag conveying device 41 waiting above. The bag opening device 41 is formed so as to be movable in the horizontal direction and movable up and down, and a plurality of suction devices 415, 4 are provided on the lower surface of the lifting stay 414.
Since 15 is provided, it descends to the upper surface of the bag in the storage box 401 and adsorbs the uppermost bag (step 401).

The bag moving device 41 sucking the bag is provided in the storage box 4
At the same time as suspending the bag adsorbed above 01, it simultaneously starts moving to the bag opening device 23 of the packaging mechanism F2. still,
At this time, the folding device 31 of the folding packaging mechanism F3, which is located in the middle of the path of the bag transporting device 41, stands by at the work discharge position P shown in FIG. 1 without facing the bag opening device 23. The bag conveying device 41 stops in a position adjacent to the bag opening device of the packaging mechanism F3 in a state where the bag is suspended, and the stop position is the folding and discharging mechanism F3 as shown in FIGS. 1 and 2. It is above the package support base 30 (step 402).

Then, this package support base 30 is shown in FIG.
As shown in FIG.
01 is the cylinder device 301s and the cylinder device 30.
Since both cylinder devices 301s and 302s are formed so as to be able to move up and down by 2s, the opening support portion 301 rises and almost comes into contact with the lower surface of the bag suspended above.

Further, since the suction device 301v is attached to the opening support portion 301 so as to face upward, the lower surface of the suspended bag can be sucked. Then, the bag sucked by the suction device 415 provided on the lower surface of the lifting / lowering stay 414 of the bag transporting device 41 is moved backward by moving the cylinder device 415s to raise the lifting / lowering stay 414, thereby supporting the opening on the lower surface side of the bag. Since it is adsorbed by the adsorption device 301v of the part 301, the mouth of the bag is opened somewhat (step 301).

Then, the bag opening device 23 of the packaging mechanism F2 further applies to the mouth of the bag which is thus somewhat opened.
Open up to a nearly circular shape. This bag opening device 23,
As shown in FIGS. 12 and 13, claws 232 and 232 directed rearward in the transport direction, which are moved forward and backward by the cylinder devices 232s and 232s, are provided in the cylinder of the octagonal tubular inner frame 230a whose central axis extends along the transport direction. Eight sets are provided and initially stand by at the center of the inner frame 230a. Further, the bag opening device 23 is mounted on the rail 231b of the support plate 231 on the cylinder device 24 arranged on the lower stage portion 20b of the packaging base 20, and is usually at the rear end of the rail 231b in the transport direction. Waiting The frame 230 of the bag opening device 23 is connected to the cylinder device 231s attached to the support plate 231, so that when the rail device 231b is moved forward on the rail 231b in the carrying direction, the bag opening device 23 is carried in the carrying direction. The claws 232 and 232 are inserted into the mouth of the bag which has been conveyed to the rear side and opened slightly (step 203).

Eight sets of the claws 232 are provided. When the cylinder devices 232s, 232s retract after the claws 232, 232 are inserted into the bag mouths, the bag mouths are opened in a substantially circular shape ( Step 204). Further, by the cylinder device 233s attached to the front side in the transport direction with respect to the cylinder device 232s on each circumferential surface of the inner frame 230a,
A sandwiching plate 233 that advances and retracts on the outer peripheral side of the claw 232 is provided in the inner frame 230a. Initially, the sandwiching plate 233 that retracts to the inner peripheral surface side of the inner frame 230a is inserted into the inner frame 230a. The claw 232 is protruded toward the center.
It is pressed from the outer surface of the mouth of the bag opened at (step 205). Thereby, the mouth of the bag retreats from the inside toward the inner peripheral surface of the inner frame 230a.
And the sandwich plate 2 protruding toward the center of the inner frame 230a.
33 and the bag opening device 23 in a completely opened state.
It is held by.

At this time, the suction device 415 provided on the bag conveying device 41 of the packaging material supply mechanism F4 at the same time as the opening is
The suction on the upper surface of the bag is released, and the bag transporting device 41 again sets the storage box 4
Return to the standby position on 01. At the same time, the suction device 30 provided with the opening support portion 301 of the folding and discharging mechanism F3.
In 1v, the suction of the lower surface of the bag that has been sucked is released, and the other cylinder device 302s retracts again, so that the opening support portion 301 descends downward.

As shown in FIG.
2, as shown in FIG. 13, in the inner frame 230a of the bag opening device 23, the workpiece W is radiated from the central axis thereof.
Since a nozzle 236 is provided rearward in the transport direction at a position separated by a distance slightly longer than the radius of, when air is supplied from this nozzle 236, only the mouth is opened as shown in FIG. The bag that is open can be inflated over its entire length (step 206).

Then, by driving the work support 234 and blowing out compressed air from the through hole 21b,
Supports the front end of the work W. Furthermore, since the rivet 21a is engaged with the front end of the work W, the work W can also be supported by this (step 201). At the same time, the rear end of the work W is supported by the cylinder device 22 (step 202). Thereby, tilting of the work W can be prevented.

Next, the work W by the transfer device 11
Of the work W is released (step 105), and thereafter, the support of the work W by the work support 234 is released (step 2).
08) This operation can be performed by contracting the cylinder 234s. Even in this state, the tip of the work W is supported by the compressed air and the rivets 21a, and the rear end is supported by the cylinder 22, so that the tilt of the work W can be reliably prevented.

Next, the frame 230 of the bag opening device 23
Device 237 attached to the lower part on the rear side in the conveying direction of
Of the conveying path 2 facing the bag opening device 23
1 Release the support at the open end.

After that, as shown in FIG. 22B, the cylinder device 24 is driven in a state where the bag opening device 23 holds the bag open, and the bag opening device 23 is moved backward in the conveying direction (right in the drawing). And the bag is put on the outer periphery of the work W (step 209). Then, the work W is conveyed along with the transport path 21 along the central axis of the inner frame 230a of the bag opening device 23 formed in an octagonal tubular shape.
It moves relatively inside and is inserted into the bag.

Next, the claws 232, 2 of the bag opening device 23
32 is slightly projected, while each of the sandwich plates 233, 233
Is retracted to open the mouth of the bag (step 210). At the same time, the blowing of the compressed air from the through hole 21b is stopped (step 211). Next, the cylinder device 22 is extended, and the work W is pushed forward in the transport direction (left in the drawing) to be extruded (step 212). Further, the cylinder device 20 is driven to return the bag opening device 23 to the initial position (see FIG. 22c).

The work W, which is a package covered with a bag together with the transport path 21, is placed on the upper stage 20 of the packaging base 20.
The cylinder device 22, which is disposed at a and supports the rear end surface of the work W, is advanced and fed onto the package support base 30 of the folding and discharging mechanism F3 at the front in the transport direction (step 213). At this time, the work W is forced to pass above the rivet 21a. However, as shown in FIG. 7, the peripheral edge of the work W is formed so as to curl, so that the rivet 21a can be smoothly crossed over. When the work W is sent out by the cylinder device 22, the transport path 21 inserted into the bag together with the work W is relatively pulled out from the bag. In addition, as shown in FIG. 22 (d), the mouth of the bag is the bag opening device 2
3 when completely separated from the claw 232 of the bag opening device 23.
232 retracts to the inner peripheral surface side of the inner frame 230a, and the inside of the cylinder of the inner frame 230a is in the most open state.

In the folding and discharging mechanism F3, when the work W, which is a package, is fed in, the front end support portion 306 shown in FIG. 15 in which the front end of the package, which is the front side in the transport direction, is located.
The central support portion 305 in which the central portion of the package is located, the rear end support portion 304 in which the rear end of the package that is the rear side in the transport direction of the work W is located, and the mouth of the bag of the package is located above. The package support base 30 including the opening support portion 301 of the cylinder support device 306s, 305s, 304s,
And the cylinder device 301 formed in the above-mentioned two series.
Both s and 302s move backward and the whole descends downward (step 302). In addition, the front end support portion 306
16 are provided on both sides of the front end pressing portion 308 shown in FIG. 16, and when the work W is fed in, a pair of cylinder devices 308s, 308s in the front end pressing portion 308 are provided.
The piston rod of 308s is retracted, and the cylinder blocks 309, 309 are located slightly behind the front end of the package support base 30. Then, the claws 309p and 309p of these cylinder blocks 309 and 309 project the work W that has been horizontally projected onto the front end support portion 306 and fed (step 303).

This is because when the work W, which is a package, is sent by the cylinder device 22 through the bag opening device 23 to the package support table 30 of the folding and discharging mechanism F3, the package support table 30 concerned. Since the open end of the transport path 21 is separated from the transport path 21, the package gradually hangs downward as the package of the work W is delivered to the front of the transport path 21. However, as described above, the package support base 30 receives the work W in a state in which the package W is entirely lowered, so that the work W, which is a package, does not get caught on the edge of the package support base 30, and thus the package W is surely secured. It is sent onto the package support base 30.

The work W is fed to the packaging support base 30 up to a position where it abuts on the pair of claws 309p, 309p of the front end pressing portion 308, but when it almost reaches the front end pressing portion 308, the entire package support base 30 is conveyed. Again rises to the original height (step 304). In this state, the front end surface of the work W contacts the front end pressing portion 308,
The rear end surface is pressed by the support member 22a of the cylinder device 22 into which the work W has been sent.

That is, after this, the mouth of the bag is folded by the folding device 31, but since the works W are not bonded to each other even in the laminated state as described above,
Even if the bag is sealed as it is, it is difficult to handle because it is curved as a columnar package, and the bag may be damaged during handling in packaging, etc. Furthermore, it is also desirable to reduce the volume of the package. Be done. Therefore, as shown in FIG. 23, while the front end surface of the work W, which is a laminated body, is in contact with the front end pressing portion 308, the cylinder device 22 into which the work W has been fed is further advanced to some extent, and The work W is compressed by pressing the rear end surface of W toward the front in the transport direction (step 214). In this way, the front and rear end surfaces of the work W are attached to the pair of claws 309p, 3 of the front end pressing portion 308.
By supporting and pressing both the 09p and the cylinder device 22, the stacked work W inserted in the bag can be reduced in volume, and the columnar work piece has a rigidity that does not bend when the bag mouth is closed. Can be packaged,
Further, the repulsive force from the work W against the packaging material enables packaging without sagging in the bag.

As shown in FIG. 17, on both sides of the rear end supporting portion 304 of the package pair supporting base 30 in a state of being pressed from both end surfaces of the work W in this manner, the work W is directed toward both side surfaces thereof. Since the side surface retainer 307 including the pair of bars 307b and 307b protruding in the radial direction is provided, the side surface retainer 307 is protruded and the pressed work W is gripped from the outer surface of the bag. Yes (Step 3
06). Thus, the compressed state of the work W can be maintained, and the individual work W can be prevented from tipping over while folding the mouth of the bag in the subsequent step. Further, after the work W is supported from the side surface by the side surface retainer 307, the cylinder device 22 into which the work W has been fed is retracted (step 215), and the claws 30 of the front end pressing portion 308 are also moved.
9p and 309p are also retracted to open the front end face side of the work W (step 307).

Further, as described above, the work W in the stacked state is used.
The folding device 31 shown in FIG. 18, which was on standby at the workpiece discharge position while pressing from both end surfaces, has moved to above the package support base 30. In the folding device 31, a pair of cylinder devices 310s, 310s are attached to both ends of the lower surface of the lifting stay 313 in a direction in which they separate from each other, and the cylindrical members 310, 310 are attached to the tips thereof.
Are suspended with their open ends facing each other.
4 (a), each of the cylinder devices 310s,
310s protrudes, and the pair of cylindrical members 310, 310 are separated from each other by the length of the stacked works W or more.

The elevating stay 313 is formed by the hanging frame 3
Cylinder device 313 installed downward of 12
By advancing s, it descends while maintaining a horizontal posture, but at this time, as shown in FIG. 24B, one cylinder hung on the lower surface of the elevating stay 313 and located on the rear side in the transport direction. The member 310 bends the mouth of the bag extending rearward of the package support base 30 in the transport direction downward (step 308). At the same time, the front end support portion 306 and the opening support portion 301 of the package support base 30 are lowered (step 309), and the pair of cylindrical members 310 and 310 suspended by the elevating stay 313 are supported by the package body. It faces both end surfaces of the work W placed on the center support portion 305 and the rear end support portion 304 of the table 30. The elevating stay 3
13 is lowered, and a hand 315 is attached to the center of the lower surface of the elevating stay 313, so that the hand 315 grips the central portion of the workpieces W in the stacked state from the outer periphery thereof (step). 31
0). As a result, it is possible to safely fold the bag and transfer the work W thereafter.

Next, the cylinder devices 310s, 310s
24C, the pair of cylindrical members 310, 310 approach each other as shown in FIG. 24C, and both end surfaces of the work W are slightly fitted from the outer surface of the bag. At this time, as shown in FIG. 17, a pair of notches 310c and 310 are provided in the one cylindrical member 310 arranged on the rear side in the transport direction.
Since c is provided, the side surface retainer 307 that holds the work W from its side surface is engaged with this notch. Then, the mouth of the bag folded downward is folded back toward the further stacked work W (step 31).
1). Therefore, the side surface presser 307 that has held the work W from its side surface is released (step 31).
2). With the pair of cylindrical members 310, 310, the compressed state of the work W can be maintained once both end surfaces of the work W are fitted in the stacking direction. At this time, as shown in FIG.
4 is lowered (step 313), the cylinder devices 310s and 310s are further retracted, and the cylindrical members 310 and 310 are moved closer to each other. As a result, the mouth of the bag can be completely folded and the work W can be securely held from both end surfaces thereof (step 314).

As described above, the pair of cylindrical members 310, 310
After holding the work W at, the elevating stay 313 is raised again to suspend the work W, and a predetermined work discharge position P
Transfer to. In this case, the folding device 31 allows the elevating stay 313 to move up and down, and as shown in FIG.
Since it is formed so as to be movable in the width direction at the upper part of the machine body 1, the work W held by being lifted above the package support base 30 is leveled in the width direction of the machine body 1 and then moved to the work discharge position P. Then, the elevating stay 313 is lowered again and discharged (step 315). Although not shown, the work W to be discharged
Is carried into a package sealing device or the like arranged at the work discharge position P, where the bag is sealed with an adhesive tape or the like. At the time of discharging, the cylinder devices 310s, 3
10 s is moved forward to move the pair of cylindrical members 310, 310 in the direction in which they are separated from each other, and the hand 315
Release the grip.

As described above, the present apparatus has a transport path 21 into which the work W, which is a can lid, is fed with its board surface facing the transport direction in the packaging mechanism F2, and a work disposed on one end side of the transport path 21. A cylinder device 22 that supports the rear end surface of W and sends it forward, and a bag opening device 23 that is arranged on the other end side of the transport path 21 to open and hold the bag.
And drive means F20 for relatively moving the packaging base 20 on which these are arranged, the bag opening device 23 and the transport path 21.
It consists of and. In this configuration, the transport path 21
By relatively moving the bag and the bag opening device 23, it is possible to cover the work W stacked in the horizontal direction on the transfer path 21 with the transfer path 21.

In the apparatus of this embodiment, the supporting mechanism is a rivet 21a and a through hole 21 for blowing compressed air.
Although b and b are arranged together on one side (front end side) in the axial direction of the can lid W, the configuration may be such that only one of them is provided.

[0089]

The packaging device for a can lid of the present invention is a bag opening device for holding the can lid in a stacked state and a bag opening device which is provided so as to face the carrier path and holds the bag in an open state. And a drive means for relatively moving the bag opening device and the transfer path so as to cover the can lid body on the transfer path with the bag held open by the bag opening device, the transfer path is extended in a substantially horizontal direction, Since a structure for supporting both ends of the stacked can lids in the stacking direction is attached to this conveyance path to prevent the stacked can lids from separating from each other, the support mechanism allows the stacked cans to be stacked. It is possible to prevent the lids from being separated from each other, and the laminated state of the can lid does not collapse during packaging. Therefore, the individual can lids do not tilt and the front and back are reversed in the bag, and even when the packaged can lids are supplied to a subsequent can lid line or the like, there is no problem in the can lid line. It can be used without any use, and labor can be saved in the packaging work after the production of the can lid.

[Brief description of drawings]

FIG. 1 is a schematic plan view of an embodiment of a packaging device for a can lid body according to the present invention.

FIG. 2 is a schematic side view of FIG.

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

FIG. 4 is an enlarged side view of a main part showing a packaging mechanism.

5 is an enlarged view showing a portion A in FIG.

FIG. 6 is a view taken along line BB in FIG.

FIG. 7 is a view taken along the line CC in FIG.

FIG. 8 is a cross-sectional view of a carry-in path in the work supply mechanism used in the apparatus of this example.

FIG. 9 is a side view showing a distribution device in the work supply mechanism.

FIG. 10 is a side view showing a transfer device in the work supply mechanism.

FIG. 11 is a cross-sectional view showing a transfer device in the work supply mechanism.

FIG. 12 is a side view showing a bag opening device in the packaging mechanism.

FIG. 13 is a front sectional view showing a bag opening device in the packaging mechanism.

FIG. 14 is a cross-sectional view of a package support base in the folding and discharging mechanism.

FIG. 15 is a side view showing a configuration of a package support base in the folding and discharging mechanism.

FIG. 16 is a plan view showing a front end pressing portion provided on the side of the package support base.

FIG. 17 is a plan view showing a side surface presser provided on a side of the package support base.

FIG. 18 is a side view showing the configuration of the folding device in the folding discharge mechanism.

FIG. 19a is a front sectional view of a hand provided in the folding device of the folding and discharging mechanism, showing the hand in a closed state, and FIG. 19b showing the hand in an open state.

FIG. 20 is a side view showing a storage box and a bag conveying device in the packaging material supply mechanism.

FIG. 21 is a cross-sectional view showing a configuration of a storage box.

FIG. 22 is an explanatory diagram showing a packaging process in the packaging mechanism.

FIG. 23 is an explanatory diagram showing a method of pressing a work sent into the folding and discharging mechanism.

FIG. 24 is an explanatory diagram showing a bag folding step.

FIG. 25 is a flowchart showing main operation steps.

FIG. 26 is a flowchart showing main operation steps subsequent to the operation step shown in FIG. 25.

27 is a flowchart showing main operation steps subsequent to the operation step shown in FIG. 26. FIG.

[Explanation of symbols]

 F1 work supply mechanism 10 carry-in path 11 transfer device F2 packaging mechanism 20 packaging base 21 transport path 21a rivet (support mechanism) 21b through hole (support mechanism) 21c piping 22 cylinder device (support mechanism) 23 bag opening device 24 rodless Cylinder mechanism (driving means) F3 Folding and discharging mechanism 31 Folding device F4 Packaging material feeding mechanism 40 Bag feeding device 41 Bag feeding device W Work (can lid)

Claims (1)

[Claims] 1. A packaging device for inserting a can-disc body having a substantially disc shape into a bag in a laminated state, comprising a conveying path on which the can lid bodies in the laminated state are placed, and a conveying path facing the conveying path. A bag opening device provided to hold the bag in an open state, and the bag opening device and the transfer path are relatively moved to cover the bag lid opened on the transfer path with the can lid body. Drive means is provided for extending the transfer path in a substantially horizontal direction, and the transfer path supports both ends in the stacking direction of the stacked can lids placed on the transfer path. And a support mechanism for preventing the can lid bodies in the stacked state from being separated from each other, the can lid body packaging apparatus.