JP3026891B2 - Bag making and filling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The disclosed technology is the technical field of manufacturing bags made of polyethylene film sheets and the like for filling products such as foodstuffs, which are handled in distribution markets such as supermarkets, in fixed amounts, and filling the products. Belongs to.

[0002]

2. Description of the Related Art As is well known, when citizens' lives are improved, a variety of commodities are traded in large and small quantities in secondary markets such as supermarkets, and foodstuffs and the like are supplied so that a stable supply is provided. Products are weighed for each predetermined weight, etc. and filled into various types of bags such as pillow type and gusset type with polyethylene film sheets, etc. Is being performed constantly.

[0003] On the consumer side, after taking out the purchased product from the bag, the remaining before use is again kept in the sealed state in the bag, and the sealing and opening are repeatedly performed. As shown in FIG. 8, in the bag 2 filled with the product 1, the chuck 4 is provided at the opening / closing portion 3 of the bag 2 so that the filled state of the product 1 can be prevented. The zipper-equipped bag 2 which can be opened easily and can be resealed while maintaining airtightness has become widely available. On the part of the
It has been widely used in terms of quality assurance and serviceability.

FIG. 4 shows such a chuck 4.
As shown in (a), (b), and (c) of Fig. 5
The strip-shaped tape 6 having a predetermined width and the groove 5 ′ correspondingly fitted to the ridge 5 and the other-side strip-shaped tape 6 ′ having the same width and having the groove 5 ′ are formed into the ridge 5 and the groove. 5
The tapes 6, 6 ′ are engaged with the occlusal portions 61 of the concave grooves 5 ′ of the ridges 5 because the occlusal integration and disassembly and separation of the ′
A technology that can be integrated with the bag 2 by fusing it to the material sheet of the bag 2 at the time of bag making as a zipper tape 6 ″ that can be engaged with the bag 2 has been developed and has come into practical use.

[0005] As shown in FIG. 9, at the time of bag making, a material sheet 8 such as a predetermined polyethylene film is fed from a bobbin 7 of a sheet roll to a former 9 via a dancer roller 10, a guide roller 11 and the like by an intermittent feeding device 20. In the meantime, the non-occluded chuck tapes 6, 6 'are separately and intermittently fed from the tape magazines 12, 12' via the feeding mechanism 21 while being intermittently fed. In the vicinity, each of the material sheets 8 is welded and integrated by each ultrasonic welding device 13, and formed into a cylindrical shape around a cylinder 14 provided integrally with the former 9. 6 ', each ridge 5 and concave groove 5' are engaged with each other to be integrated, and both vertical seals are formed by an upper sealer 16 of the vertical sealer and a bottom sealer 16 'opposed to the upper sealer 16. Was carried out, the engaging portion 61 of the fastener tape 6 and 6 'by a tape presser 17 of ultrasonic provided at one side near the lower portion of the cylinder 14
The lower horizontal seal is performed by the horizontal sealer 18 while maintaining the airtightness by preventing the occurrence of pinholes and wrinkles in the next horizontal seal by performing a flattening action. The product 1 weighed to a predetermined weight or the like at the previous stage is inserted through a chute (not shown), and the upper horizontal seal is performed after a predetermined feed stroke, and at the same time, the horizontal seal is performed by a cutter 19 installed in a horizontal sealer 18. By cutting, the bag 2 filled with the product was obtained.

In the above-described bag making process, the material sheet 8 is intermittently pulled down (supplied) by the intermittent pulling down device 20.

The horizontal seal and the cutting action by the cutter 19 are performed when the intermittent feeding of the material sheet 8 is interrupted.

As described above, conventionally, the bobbin 7 of the sheet roll is used.
Material sheet 8 such as polyethylene film wound around
Is supplied to the former 9 in a process of supplying the chuck tapes 6 and 6 ′ together with the material sheet 8 and welded and integrated to both edges of the material sheet 8 via the welding device 13 by ultrasonic energy. In the process of supplying and bag-making, the commodity 1 weighed in a predetermined stage before the vertical and horizontal sealing of the material sheet 8 is performed, a chute (not shown) provided on the upper part of the former 9.
A step of supplying and filling via the cylinder 14 has been employed.

[0009]

However, in the conventional technology, since the material sheet 8 fed to the former 9 is intermittently fed by the pulling-down device 20, the material from the bobbin 7 of the sheet roll is used. Intermittent feeding mechanism 20 for sheet 8 and feeding mechanism 2 for chuck tapes 6, 6 '
1 is different from the continuous feeding by the first feeder 1 in that the feed mechanisms 20, 21 for intermittent feed on the front side and continuous feed on the near side are used.
Is required, and there is a disadvantage that the whole device becomes complicated,
In addition, since a certain amount of feed is always required for the bag making process, a feed adjustment mechanism for both must also be provided.
There is a disadvantage that the whole apparatus becomes more complicated, management and control become complicated, and initial costs, as well as initial costs,
There was also a disadvantage that the maintenance cost was high.

Moreover, the conventional type of chuck tapes 6, 6
The welding with ultrasonic energy has a demerit that the expensive ultrasonic welding device 13 is attached and the cost is spurred. In addition, since the feeding of the material sheet 8 is intermittent, the chuck tape is used. 6,
The selection and adjustment of the amplitude of the booster that applies vibration to the horn of the ultrasonic welding device 13 that integrates with the 6 ′ requires extremely high skill, and the management and control thereof are extremely difficult.

Further, there is a problem that bad heat influences such as wrinkling of the film of the material sheet 8 due to heat generated from the welding device 13 due to continuous operation.

Also, since the welding of the chuck tapes 6, 6 'to the material sheet 8 by the ultrasonic energy is used, when the material of the material sheet 8 and the material of the chuck tape 6, 6' are different, matching is required in welding. There was also a drawback that it could not be taken well and the weldability deteriorated.

[0013] These problems are solved by the applicant's earlier Japanese Patent Application Laid-open No. Hei 4-
The same applies to the improved invention disclosed in Japanese Patent No. 87916.

[0014]

The object of the present invention is to fill a product by a bag making process based on a material sheet such as a polyethylene film based on the prior art described above, and furthermore, a zipper tape is automatically provided at the edge of the bag. The technical problem to be solved in the process of welding is to solve the problem. During bag making, the welding of the zipper tape to the material sheet is performed without wrinkles of the material sheet, and the filling of the product is also possible. In addition, all of these processes can be performed easily and the process can be simplified, as well as initial assembly of production, as well as easy maintenance, maintenance, control and adjustment of equipment during operation, and cost reduction. The present invention aims to provide an excellent bag-making and filling apparatus that can be used in the distribution industry to benefit the field of product handling technology.

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a configuration of the invention of the present application for solving the above-mentioned problems is provided by a vertical sealer provided outside a cylinder provided integrally with a former. And a horizontal sealer below the vertical sealer is provided, and an intermittent pulling-down device for the material sheet and the zipper tape is provided. Is provided with a pair of guides for the chuck tape, and a pair of tape sealers for the chuck tape is additionally provided with the guide interposed therebetween, and synchronized with the intermittent pulling-down device between the vertical sealer and the horizontal sealer below the sealer. It is based on a bag making and filling device in which a pulling piece and a heat block that perform a box motion that operates in a vertical manner are arranged, and The tape sealer and the vertical sealer are arranged upwardly and laterally so as to form a bag making and filling device, and further, the tape sealer is in a fully open position, and the vertical sealer is close to the cylinder. In this case, technical means are adopted to make the apparatus be a bag making and filling apparatus arranged.

[0016]

A material sheet is formed from a bobbin of a sheet roll via a dancer roller and a guide roller so as to integrally weld a zipper tape to an opening / closing portion made of polyethylene film or the like so as to fill a predetermined product into a bag. And formed into a cylindrical shape along the side surface of the cylinder provided in the former, and the material sheet is intermittently pulled down by an intermittent pulling-down device. A sealer and a horizontal sealer below the sealer are provided, intermittent pulling down of the material sheet and the chuck tape is performed cooperatively, an intermittent pulling down device is cooperatively provided below the vertical sealer, and the chuck tape is attached to the cylinder. A pair of guides is provided. A tape sealer is provided, and a heat block that performs a box motion that operates synchronously with the intermittent pull-down device is provided between the vertical sealer and a horizontal sealer below the tape sealer. The tape sealer is fully opened so that the vertical sealer and the vertical sealer are displaced upward and sideways, so that the vertical sealer is arranged close to the cylinder, and The integrated chuck tape in the occlusal state is fed through a guide from a magazine or the like to a vertical sealer portion of the former through a guide, and is intermittently pulled outside the cylinder integrally with the material sheet. In the process where the upper and lower vertical sealers are pulled down and stopped, the tape sealer removes the zipper tape from the material. The chuck tape is crushed by a heat block that operates in a box motion type in synchronization with the intermittent pull-down device. It performs the action, so that the product is weighed and weighed in the previous stage through a chute or the like provided at the upper part of the cylinder, and then filled and filled. Next, when the intermittent feed is stopped, the upper and lower parts are sealed horizontally. This is a product in which a bag filled with goods can be obtained by performing horizontal cutting.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is an explanation of a preferred embodiment of the present invention, with reference to FIGS. 1 to 7, with reference to FIGS.

The same parts as those in FIG. 9 will be described using the same reference numerals.

Reference numeral 22 denotes a bag-making and filling device which forms the center of one aspect of the invention of the present application. The bag-making and filling device 22 is used for filling a predetermined product 1 in a polyethylene film bag 2 in a sealed state. A hopper type chute (not shown) connected to a preceding weight weighing device (not shown) is connected to an upper portion of a cylinder 14 having a circular cross section extending integrally from the inside of the former 9. An upper vertical sealer 16 and a lower vertical sealer 16 'opposed to each other from the center to the lower part of the cylinder 14 are attached to the apparatus frame in the same manner as in the conventional mode, and a predetermined lower part thereof is intermittently pulled down as a feeding mechanism. The driving devices 20 are provided to face each other, and the driving device 20 ′ is electrically connected to a predetermined control device 23.

A tape presser 17 of an electric heat type heat sealer is provided below the intermittent pulling-down device 20 so that the heat blocks 17 ', 17' face each other so as to be able to approach and separate from each other. It is manually provided so as to be capable of ascending and descending manually for positioning, is electrically connected to the control device 23, and is intermittently pulled down in a predetermined box motion synchronously with the intermittent pulling down device 20 to perform the chuck tape 6 '.
The occlusal portion 61 ((c) in FIG. 4) is provided with a crushing action to provide a crushing seal at a predetermined pitch.

Further, slightly above the heat block 17 ', a sheet pulling piece 17 for wrinkle elongation of the material sheet 8 is provided.
"", 17 "are disposed opposite to the edge of the material sheet 8, and the timing is slightly shifted with respect to the heat blocks 17", 17 ", and moves up and down in a square-shaped box motion type. In this way, the material sheet 8 is prevented from being wrinkled.

A horizontal sealer 18 is provided below the tape presser 17, and a built-in cutter 19 is provided.
Is electrically connected to the control device 23 and operates in synchronism with the intermittent pulling-down device 20 to stop the intermittent feeding of the material sheet 8 to cut the bag 2 filled with the product 1 to the next stage. To fall to.

A material sheet 8 made of polyethylene film or the like is intermittently pulled down from a bobbin 7 of a sheet roll via dancer rollers 10, guide rollers 11, and the like.
0 is intermittently fed to the former 9.

The basic mechanism described above is substantially the same as the conventional embodiment shown in FIG.

In the invention of this application, the intermittent pulling action of the intermittent pulling device 20 on the outer surface of the cylinder 14 of the raw sheet 8 immediately causes the intermittent pulling of the raw sheet 8 from the bobbin 7 of the sheet roll. The zipper tape 6 ″ is fed intermittently to the former 9 in a box motion in synchronization with the former 9 to perform a crushing action.

Therefore, in the invention of this application, a continuous feeding mechanism 21 near the bobbin 7 side of the sheet roll and an intermittent feeding mechanism for the cylinder 14 as shown in FIG. There is no need to provide two kinds of equipment for the feeding mechanism 20.

A magazine 12 ″ of the chuck tape 6 ″ is disposed on the upper side of the former 9, and is connected to a driving device 20 ′ that reduces the pulling resistance of the intermittent pulling device 20. , Chuck tapes 6, 6 'are convex stripes 5.
And the corresponding concave groove 5 'is integrated into an occlusal state and wound for a predetermined length, and the chuck tape 6''taken out from the magazine 12''is passed through the guide reels 24, 24. As shown in FIGS. 3 and 5, the outer side of the inner guide 25 and the outer side of the outer guide 25 'fixed to the cylinder 14 via a bracket 26, as shown in FIGS. Is to be sent between.

As shown in FIG. 3, between the guides 25 and 25 ', there is formed a gap 27 between the engaging portions 61 of the chuck tapes 6 and 6'. , 25 'are arranged so as to be along the same plane (that is, on the same straight line in cross section).

As shown in FIG. 5, chuck tapes 6, 6 'are provided at predetermined positions between the two guides 25, 25'.
Are pivotally mounted.

At the lower part of the guide roller 28 and at the upper part of the intermittent pulling-down device 20, an electric heat tape sealer 29, 29 is provided instead of the conventional ultrasonic energy sealer. The chucking tape 6 ″ in an occlusal state is inserted into the edge of the material sheet 8 so as to be adjacent to and separated from the side of the material sheet 8 in an opposed posture, as shown in FIG. When the box motion of the pull-down operation is stopped, it is welded integrally to the inner surfaces of the front and rear surfaces.

Accordingly, the material sheet 8 is vertically sealed at both ends when the pull-down operation is stopped, and then the chuck tape 6 ″ in the occlusal state of the occlusal portion 61 is applied to both sides of the edge of the material sheet. It is to be integrally welded to the inner surface.

In the bag making and filling apparatus 22 having the above-described structure, when the intermittent pulling-down apparatus 20 starts operating in a state in which the material sheet 8 is externally formed in a cylindrical shape outside the cylinder 14, the material sheet 8 becomes intermittent. The pulling device 20 intermittently pulls the bobbin 7 of the sheet roll from the bobbin 7 with a predetermined tension by the pulling drive.
2 is intermittently fed to the former 9 via the dancer roller 10 and the guide roller 11, and both edge portions thereof are united and formed below the cylinder 14 by the former 9 and intermittently pulled down. As shown in FIGS. 3, 5 and 6, the inner sheet 25 is guided by the inner guide 25 and the outer guide 25 ′ which are integrally fixed to the cylinder 14, so that the inner surface of the pair of edge portions of the material sheet 8 is separated. Occlusal part 61 of chuck tape 6 ″ in an occlusal state so as to be interposed between
Is vertically slid into the gap 27 between the guides 25, 25 ', and the chuck tape 6 "and the material sheet 8 are pulled down by the electrothermal tape sealers 29, 29 and are welded together when the operation is stopped. The vertical seal at the top and the bottom is also performed by the vertical sealer 16 at the bottom and the bottom sealer 16 'at the bottom when the pulling down is stopped, and the expansion of the chuck tape 6''at the lower part of the upper vertical sealer 16 is performed. The heat sealer-type tape presser 17 intermittently pulls down the control unit 23 in synchronization with the operation signal of the drive unit 20 ′ of the pull-down unit 20 in order to prevent the occurrence of air leaks and wrinkles due to pinholes or the like due to turbulence. The heat blocks 17 ', 17' are synchronously actuated to provide a squeezing action via the heat block 17 '. In the lower part, the horizontal sealers 18 and 18 operate in a predetermined manner by the control device 23 to perform a horizontal seal when the lowering operation is stopped, and also perform a horizontal seal at the lower part. The product 1 weighed to a predetermined weight by the weighing device at the preceding stage is filled and charged by a chute (not shown) through the cylinder 14, and at the time of stopping after the next predetermined intermittent feed stroke, the upper horizontal seal is performed and the cutter 19 is cut. , The bag 2 filled with the commodity 1 is dropped and transferred to the next processing step.

Therefore, since the tape presser 17 intermittently operates as a tape sealer, no bad thermal effect is produced on the material sheet 8 and the chuck tape 6 '' by the conventional ultrasonic integrated welding device or the like. When the pull-down operation on the material sheet 8 is stopped by the tape sealers 29, 29, the integral welding of the chuck tape 6 '' is reliably performed.

Then, the material sheet 8 from the bobbin 7 of the sheet roll and the chuck tape 6 from the magazine 12 ''
The intermittent feeding of ″ ″ is performed by the intermittent pulling-down device 20 provided outside the cylinder 14 in the same intermittent feeding as the intermittent pulling-down feeding of the cylindrical material sheet 8 outside the cylinder 14. .

The drive unit 20 'for the magazine 12 "
'Is actuated to reduce the withdrawal resistance of the intermittent withdrawal device 20.

Also, as described above, the feeding of the chuck tape 6 '' from the magazine 12 '' is similarly performed by the same intermittent feeding by the intermittent pulling-down device 20, and the entire feeding mechanism is greatly simplified.

Then, as in the embodiment shown in FIG. 7, the tape sealers 29, 2 for the chuck tape 6 '' shown in FIG.
9 in the fully open position, and fix the zipper tape 6 '.
′ Is not fed from the magazine 12 ″, and by operating the vertical sealer 16 in a predetermined proximity to the cylinder 14 side, packaging with only a four-sided seal can be made possible.

It is needless to say that the embodiments of the invention of this application are not limited to the above-described embodiments. For example, various materials such as paper, cloth, mesh and the like can be used for the material sheet in addition to the polyethylene film. is there.

It goes without saying that bags other than the pillow type can be used, such as gusset type bags.

Further, it goes without saying that the target commodities may be commodities other than food products.

[0041]

As described above, according to the invention of this application, it is possible to open and reseal a product filling bag used in a distribution market basically by using a chuck. In automatic bag making and filling that can fully utilize the advantage that confidentiality is maintained and reliability for quality assurance etc. can be fully utilized, feeding and feeding of polyethylene and other material sheets from the bobbin of sheet rolls and magazines Single feeding by box motion synchronized with intermittent lowering in the process performed when stopping the operation by pulling down the vertical and horizontal seal after forming the circle outside the cylinder of the former Since it is performed by a mechanism, the structure is extremely simple in terms of equipment, and not only initial assembly of the device, but also maintenance, inspection, maintenance, control, management, and adjustment become extremely easy. Effect is achieved that, excellent effect that significantly reduced can be achieved in terms of cost are obtained.

In the process of performing vertical and horizontal sealing in the step of intermittently pulling down the material sheet, the chuck tape is inserted between both edge portions of the material sheet together with the material sheet when the same intermittent feed is stopped. Unlike conventional welding using ultrasonic energy, electro-thermal tape sealing enables welding without being affected by the welding speed, and eliminates the need to select or adjust boosters in conventional ultrasonic welding equipment. Yes, and by using an electrothermal tape sealer as the tape presser, intermittent operation can be performed in the same way as intermittent pulling down, so there is an effect that the adverse effect of heat generation by continuous ultrasonic irradiation does not occur, As a result, the effect that the product yield is good and the processing efficiency is improved is also exerted.

The welding of the zipper tape to the material sheet by the tape sealer is performed when the box motion is stopped in the process of forming a circular cross section by the former, and when the intermittent feeding of the sheet roll is stopped, the integrated strip state is engaged. By doing so, unlike the case where each of the zipper tapes is welded to the material sheet sent out from the bobbin of the sheet roll for each strip at the former stage of the former, the deformed shape such as wrinkles at the intermediate dancer roller and guide roller No state appears, heat generation at the former stage of the foamer is prevented, and the reliability of the product is further improved without air leakage or wrinkles of the bag, in combination with the crushing action of the tape presser by the tape sealer. This is an excellent effect.

[Brief description of the drawings]

FIG. 1 is an overall schematic perspective view of an apparatus structure according to an embodiment.

FIG. 2 is a partial cross-sectional view of welding a material sheet and a zipper tape.

FIG. 3 is a partial sectional view of a guide.

FIG. 4 is a sectional view of a chuck tape.

FIG. 5 is a partial cross-sectional view in which a chuck tape guide and a heat sealer are engaged.

FIG. 6 is a front perspective view of the same.

FIG. 7 is a partial cross-sectional view of another embodiment.

FIG. 8 is a perspective view of a bag.

FIG. 9 is a perspective view of a main part mechanism of a bag making and filling apparatus based on the prior art.

[Explanation of symbols]

 9 Former 8 Material sheet 6 '' Chuck tape 1 Product 16, 16 'Vertical sealer 18 Horizontal sealer 14 Cylinder 20 Intermittent pull-down device 22 Bag-making and filling device 12' 'Chuck tape feeding device 25, 25' Guide 29 Tape sealer 17 Tape press 17 '' Sheet tension piece 17 '' Heat block

Claims (3)

(57) [Claims] A vertical sealer and a horizontal sealer below the vertical sealer are provided outside a cylinder provided integrally with the former, and an intermittent pulling-down device for a material sheet and a chuck tape is provided. The intermittent pull-down device is provided in coordination, the cylinder is provided with a pair of guides for the chuck tape, and a pair of tape sealers for the chuck tape is further provided with the guide interposed therebetween. A bag making and filling apparatus characterized in that a pulling piece for performing a box motion and a heat block, which operate in synchronization with the intermittent pull-down device, are arranged vertically between a sealer and a lower horizontal sealer. 2. The bag making and filling apparatus according to claim 1, wherein the tape sealer and the vertical sealer are arranged so as to be displaced upward and sideways. 3. The bag making and filling apparatus according to claim 2, wherein said tape sealer is in a fully open position, and a vertical sealer is disposed close to said cylinder.