JPS6031689B2 - Welding packaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention lifts a cubic package, which is easily damaged or deformed, such as a large number of stacked molding trays, to a packaging position by means of an elevating table along with packaging films that are drawn out from the left and right sides, and is pressure welded using a pair of pressurized welding bodies at the front and rear sides of the package and at the center of the lower side in the left and right direction, making it possible to weld all four circumferences together with the upper weld line created before packaging. The purpose of this method is not to heat-shrink the packaging film, but to create an extremely rough bundling using the packaging means.

The present invention uses a pair of melt-sealing pressurizing bodies installed on both sides of the packaging position so as to be able to advance so as to face each other at an interval exceeding the middle of the right and left sides of the packaged item, to apply the packaging film on both sides surrounding the packaged item to the packaged item. At the same time, weld the front and rear sides and the lower side of the film, and at the same time cut the middle part of the lower band-shaped welding wire, so that the upper half of the welding cut line belongs to the envelope side, and the lower half of the welding cut line connects the continuous film on both sides. The welded cut line is left as an adhesive line at each outlet end, and the welded cut line is placed on the top of the next packaged item to perform dark welding packaging. Lifting table for pushing up, movable ratchet for supporting a pair of envelopes pushed up into the space between the melt-sealing pressurizers, and guiding the extended ends of the continuous packaging film on both sides to the lower surface of the melt-seal pressurizer. It is equipped with a guide member and the like to enable automatic melt-seal packaging. An embodiment of the invention will be described with reference to the accompanying drawings.

Reference numeral 1 denotes a rectangular frame in which the packaging position 1 shown in FIGS. 1 and 4 is set.

Reference numerals 2 and 2 designate a pair of guide plates that extend substantially at both left and right ends of a cubic package a that is lifted up to the packaging position 1 by a lifting table 21 (to be described later), and are fixed to both sides of the frame 1 so as to be horizontally aligned. It is fixed to each tip of the protruding support village 3.

4, 4 is the lower end of each guide plate 2, 2, which is fixed to both sides of the frame and protrudes in the horizontal direction, and is freely rotated upward by a shaft 6 at the tip of each supporting arm 5, 5, which is supported by a shaft 6. A pair of movable ratchets for supporting a packaged object, with a supporting pawl 7 projecting inward from the guide plate 2, and allowing passage of the packaged object a pushed up by an elevating table by rotating around a shaft 6. , after passing, the support claws 7 are projected, and when the elevating table 21 is lowered, the covered object a is supported by the support claws 7. 8
, 8 are oppositely provided on the left and right sides of the packaging position 1, and are supported by the movable ratchets 4, 4 and located between the guide plates 2, 2, corresponding to the front and rear sides of the package. A pair of melt-sealing pressurizing bodies having a substantially upward U-shape and having a corresponding wall plate 10 on the lower side, and wall plates 9 and 9 on both front and rear sides of the lower wall plate 10.
They protrude slightly forward and rearward from 9', and have the structure shown in detail in FIG. A thin horizontal groove 11 is provided in the middle of the heating and pressing surface 10a of the side horizontal portion, and a heating wire 12 for cutting the packaging film by heating and melting is passed through this groove, and the heating wire 12 is used as a cutting device.

The pair of pressurized melt-sealed bodies 8, 8 are provided with sleeve plates 13, 13' that project forward and backward from the outer ends of the respective wall plates 9, 9'.
Guide rails 14, 15, 14 whose ends are fixed to both left and right sides of the frame at the top and bottom of the front and rear sides of packaging position 1.
', 15' and passed between levers 17, 17 fixed to the lower ends of rotating shafts 16, 16 vertically installed along the inner surfaces of both left and right ends of the frame, and sleeve plates 13, 13'. The brackets 20, 20' are connected to the links 18, 18 by shafts 19, 19, and the first of the rotating shafts 16, 16 is
By rotating in the direction of the arrow in the figure, the heated and pressurized surfaces 9a, 9'a, 10a of the pressurized twilled seals 8, 8 are removed from the packaging position 1 so as to have a distance that exceeds the middle of the left and right sides of the packaged item a. , the rotation of the rotating shafts 16, 16 in the direction of loss of line in FIG. 10a is crimped at the center of the packaging position 1. The guide plates 2, 2, the support punches 3, 3, the movable ratchets 4, 4, and the support arms 5, 5 are connected to the wall plates 9, 9' of the pressurized melt-sealed bodies 8, 8, and the wall plate 1.
0, and does not impede the above-mentioned movement of the melt-sealed bodies 8, 8. Reference numeral 21 denotes an elevating table installed at the lower part of the packaging position 1, which is formed in the left and right sides to gently pass between the supporting claws 7 of the pair of left and right movable ratchets 4, and extends and contracts in the vertical direction of the first cylinder 22. The piston rod 23 is fixed to the upper end of the piston rod 23.

24 is a piston extending downward from the second cylinder 25 through the center of the packaging position 1, as shown in FIGS.

The supply plate 28 is a presser pad fixed to the lower end of the telescopic village 27 which is inserted through the lower end plate of the pad 26 and expanded by spring elasticity, and is provided with a hole 29 through which the elevating table 21 projects as shown in FIG. It is stopped slightly above the upper surface of the covering material a which is supplied from the side and rests on the hole 29, and waits. 30,
Reference numeral 30 denotes a frame that is attached to both the left and right sides of the frame 1, and the shafts of a pair of support rolls 32 and 33 that support the wrappers c and c of the continuous packaging film are passed through the shafts of each of the frames and are freely rotatably supported. , and both support rolls constitute a support mechanism 31.

One of the support rolls 32 is made to be able to actively rotate by a motor 34, an endless chain 35 and an interlocking endless chain 36, which are wound around the motor 34, and continuous packaging films b and b extending from the winding drums c and c are A pair of left and right guide sections 37 are provided, each consisting of a group of guide rolls 38 and guide rods 39, 40, 41, and 42, which guide the lower entrance of the packaging position 1, specifically below each of the movable ratchets 4 on both sides. Among the above guide rods 39
43 is supported by the frame 30' and moves up and down.
Install the continuous packaging film b between the lower ends of the guide roll 3
It is bent in a V shape between 8 and the guide rod 40,
The seat plate 44 that receives the lowering of the lifting rod 43 is provided with a mitt switch Ls that turns off when the guide rod 39 and the lifting rod 43 are raised. The same drives the motor 34 and the support roll 32 to rotate the winding drums c, c in the payout direction. The guide rod 42 is connected to the lower part of each movable ratchet 4 and the supply plate 2.
It is arranged on both sides of the lower entrance of the packaging position 1 between the wrappings a on the top 8. The continuous packaging films b, b fed out from the left and right rolls c, c are connected between the guide rods 42, 42 by a cut-off line (a), and the presser pad 24 is placed on the weld line (a). Reference numeral 46 denotes a comb-shaped transfer box which is provided on the package transport plate 45 and stores one package a in each of a number of compartments 47 whose top and bottom and front sides are open. A chain 49 driven by the chain 49 moves onto the supply plate 28 and stores the articles a in the compartments 47 in an intermittent motion to sequentially stop them on the holes 29, until all the compartments 47 are emptied, and the objects a are lifted and lowered. At the same time as the table 21 returns to the lower position shown in FIG. The operation of sequentially stopping the holes 29 of the supply plate 28 is performed.

Reference numeral 50 denotes an extruded plate in which the lower ends of parallel links 52 and 53 are supported by a mounting plate 51 that is disposed in front of the packaging position and protrudes to the front, and is configured to rapidly advance between the guide plates 2 and 2. There is.

In this embodiment, the left and right continuous packaging films b, b form a cutting and welding line A between the guide rods 42, 42, and the wrapping material a stored in the section 47 of the transfer plate 46 is transferred to the supply plate 28. When the packaging material a is fed onto the hole 29 as shown in FIG.

Therefore, the continuous packaging films b, b are simultaneously pushed up with the cut welding line (a) covering the top surface of the packaged item (a), and the elevating rod 43 and the guide rod 39 are raised and pulled out by the required length at that time. However, at this time, the motor 34 rotates to cause the film line to come out from the winding drum c, and the slack is tightened by the lowering of the lifting rod 43 and the guide rod 39, and the motor 34 is stopped at the end of the lowering. The other continuous packaging film b, wrapped object a covered with b
moves up to the packaging position 1 with the movable ratchets 4, 4 removed by the film, and when the lower end surface of the packaged object a passes, the movable ratchets 4, 4 simultaneously return to the positions shown in FIGS. 1 and 5. Then, the lifting table 21 is allowed to descend, and the package a and the packaging films b and b are supported by the support claws 7.

After the support, the rotating shafts 16, 16 rotate in the direction of the arrow in FIG. 4 to slide the pressurized melted bodies 8, 8 in the approaching direction,
The heating and pressing surfaces 9a, 9'a, 1 are heated and pressed as shown in FIG.
0a and as shown in Figure 7, weld the welding wire openings on both the front and back sides and weld the welding wires at the lower ends of the openings. disconnected. After the required time has elapsed, the rotating shafts 16, 16 rotate in the direction of line loss as shown in FIG. 1, and the pressurized melt-sealed bodies 8, 8 are returned to the position shown in FIG. Therefore, the film-wrapped package a remains on the movable ratchets 4, 4, and the continuous wrapping films b, guided by the guide members 37, 37 are connected by the newly generated cutting and welding line A, and the guide rod 42 , 42. At this time, even if there is some slack, there will be no problem because the next packaged item a and the transport box 46 will pass under it. As described above, the wrapped article a remaining on the movable ratchets 4, 4 is kicked out to the rear side of the frame 1 by the rapid movement of the push-out plate 50. As clarified from the above description, the present invention includes an elevating table 28 that pushes up at a fixed position with respect to the cubic package a to be fed; A pair of guide plates 2, 2 are provided at the lower part of the packaging position so as to be able to swing only upwards, and when the package is swung back, the lower end surface of the package a is raised. The movable ratchet 7 supports the lifting table 28 and cannot prevent the lifting table 28 from returning downward, and the wall plates 9 and 9' are opposed to each other on both sides of the packaging position. A pair of freely movable pressurized melt-sealed bodies 8 and 8 are provided, and the bondable end faces of the respective wall plates are used as heating and pressurizing surfaces, and are joined at the longitudinal center of the packaging position when advancing. Continuous packaging unwound from winding drums c, c supported by a cutting device 12 provided in the middle of the end surface of the lower wall plate 10 of the melt-sealed body and a support mechanism installed on the outside of each of the melt-sealed bodies 8, 8. A guide member for guiding the films b and b onto the lifting table at the packaging position,
The guide member is provided with guide rods 39, 39, which are pulled out by pressing and moving to a length necessary for wrapping the packaging film, and which return as the elevating table 28 rises. It is characterized by covering the film and roughly melt-sealing all four circumferences, and it does not involve heat shrinkage of the packaging film, but merely acts as a binding agent. The package is not pulled out by the lifting force to the packaging position, but before the lifting, the length required for packaging is pulled out by moving the guide rod, and the guide rod is returned to its original position as the lifting table rises. Since the packaging film can be returned to its original position and moved to the packaging position together with the packaged item without loosening the packaging film or creating almost any resistance, the packaging film can be moved even if the packaged item is easily damaged or deformed. The product is not damaged by the force of pulling it out, and has the effect of being able to protect the packaged item with a film and provide packaging that facilitates packaging, etc., accurately and at high speed.

[Brief explanation of the drawing]

The attached drawings show one embodiment of the present invention, and FIG. 1 shows an extrusion plate 5.
A longitudinal sectional front view of the relevant parts shown excluding 0, Figure 2 is a plan view,
Figure 3 is a side view cut along line A-A in Figure 2, Figure 4 is Figure 3B
5 is an enlarged front view of the movable ratchet 4 on one side, FIG. 6 is an enlarged perspective view of the pressurized melt-sealed body 8 on one side, and FIG. 7 is a continuity of the envelope a. It is a perspective view showing melt-seal packaging using a packaging film and generation of cutting and welding lines on both sides of the film. 1 → packaging position, 4 → movable ratchet, 8 → pressure melt seal,
9, 9' → wall plate, 10 → wall plate, ga, 9'a, 10a →
Heating and pressing surface, 12 → heating wire (cutting device), 21 → lifting table, 23 → piston rod, 31 → support mechanism. Figure 1 Figure 5 Figure 2 Figure 3 Figure 4 Figure 6 Figure 7

Claims (1)

[Claims] 1. An elevating table 28 that pushes up the fed cubic package a at a certain position, and a packaging position where the table 28 and the package a are opposed to each other on both left and right sides above the elevating table and protrude upward. A pair of guide plates 2, 2 comprising;
a movable ratchet 7 which is provided at the lower part of the packaging position so as to be able to swing only upwards, supports the lower end surface of the packaged item a as it swings back, and which does not prevent the lift table 28 from returning downward;
Wall plates 9 and 9' are opposed to each other on both sides of the packaging position, and a lower wall plate 10 is provided below the movable ratchet 7, and the weldable end faces of these wall plates are used as heating and pressing surfaces to advance A pair of freely movable pressurized melt-sealed bodies 8, 8 to be joined at the longitudinal center of the packaging position when and a guide member for guiding the continuous packaging films b, b fed out from the winding drums c, c supported by support mechanisms installed on the outside of each of the melt-sealed bodies 8, 8 onto the lifting table 28 at the packaging position. The guide member is provided with guide rods 39, 39 that pull out the length of the packaging film necessary for packaging by pressing and moving and return as the lifting table 28 rises, so that the packaged items pushed up by the lifting table are provided with guide rods 39, 39 that pull out the length of the packaging film necessary for packaging. A welding packaging apparatus characterized in that a packaging film is placed on the packaging film and the four peripheries are roughly melt-sealed by the heating surface.