JP6807339B2 - Fusing machine and filling and packaging equipment - Google Patents

Description

The present invention is applied to a filling and packaging device in which a strip-shaped sheet is molded into a packaging bag and the object to be packed is filled inside, and both edge portions of the film are fused to each other to form a tubular body. The present invention relates to a fusing machine and a filling and packaging device including the fusing machine.

In the food manufacturing industry, a filling and packaging device is used in which a strip-shaped film is formed into a packaging bag and the object to be packaged is filled inside.

FIG. 10 is a configuration diagram of a main part of a filling and packaging device disclosed in Patent Document 1 described later, and in the drawing, R is a sheet roll formed by winding a strip-shaped sheet. The sheet S drawn out from the sheet roll R is guided to the neck-shaped shaping plate 30 while applying the required tension through the plurality of rolls 120, 120, ..., Shaped into the neck-shaped shape there, and then arranged in the vertical direction. It is guided to a portion near the upper end of the cylindrical shaped plate 40, and both edge portions of the strip are butted by a predetermined width, and the other strip-shaped portion is cylindrical following the outer peripheral surface of the tubular shaping plate 40. It is molded into a shape.

At a position near the lower end of the tubular shaping plate 40, a fusing machine 50 for fusing the abutted both edges of the sheet S is arranged so as to face each other at a predetermined distance from the outer peripheral surface of the tubular shaping plate 40. The abutting edge portions of the sheet S are fused by the fusing machine 50 to form a tubular body T, which is pulled out below the tubular shaping plate 40. A liquid or gel-like filler is injected into the T from an injection pipe 200 that penetrates the tubular shaping plate 40. At the lower position of the tubular shaping plate 40, a pair of feed rolls 121 and 121 that sandwich the tubular body T and send it downstream, and for regulating the amount of the filling material G injected into the tubular body T. A pair of restricting plates 140, 140, a sealing machine 151 for sealing the entire width region of the tubular body T to form packaging bags H, H, ..., And cutting between each packaging bag H, H, ... The cutting machines 152 are arranged in this order, and are carried out as packaging bags H, H, ... Filled with a material to be filled.

In the fusion machine 50 described above, a heating block that sandwiches the abutted both edge portions of the sheet S to melt predetermined portions of both edge portions and a pressing block that presses both edge portions of the sheet S against the heating block are arranged to face each other. Then, a melting portion in which both edge portions of the sheet S are inserted between the two to melt the sheet S, and both edge portions arranged downstream of the melting portion and drawn out from the melting portion are arranged in a pair or in tandem. It is provided with a crimping portion that is sandwiched between a pair of rolls to crimp the molten portion.

Japanese Unexamined Patent Publication No. 2009-91002

In such a filling and packaging device, the feed rolls 121 and 121 are stopped at the timing when the sealing machine 151 seals the entire width of the tubular body T to communicate with the feeding operation of the tubular body T and the tubular body T. The pull-out operation of the sheet S is temporarily stopped, but in the conventional fusion splicer 50 as described above, when the pull-out of the sheet S is paused, the abutted both edges of the sheet S are melted. Since the temperature of the portion existing between the fused portion and the crimped portion is lowered by cooling, there is a problem that the crimping portion of the fusion splicer 50 is defective. Therefore, when the temperature of the heating block arranged in the molten portion is raised, the abutted both edge portions of the sheet S are excessively melted, and the slag eluted and solidified from both edge portions of the sheet S adheres to the lower end of the molten portion. It ends up. To remove such slag, the operation of the filling and packaging device must be suspended.

The present invention has been made in view of such circumstances, and even when the drawing of the sheet is temporarily stopped, crimping defects are avoided without raising the heating temperature of the molten portion more than necessary. The present invention provides a fusion splicer capable of forming a fusing machine, and a filling and packaging device including the fusing machine.

(1) In the fusion splicer according to the present invention, a melted portion that melts predetermined portions of both edge portions of a resin sheet formed into a strip shape and a melted portion of the sheet melted by the melted portion are pressed against each other. In a fusion machine provided with a crimping portion, the sheet is fed in the vertical direction while repeatedly pausing, and the melting portion follows both edge portions of the sheet in the longitudinal direction of the sheet. It is provided with a pair of blocks that are sandwiched between the blocks and melted, and the molten portion of the sheet melted between both blocks of the melting portion is directly supplied between the melting portion and the crimping portion without being crimped. A post-heating portion for sandwiching and post-heating the molten portion is provided, and the post-heating portion is transferred to the melted portion of the sheet melted by the melted portion, and the post-heating roll is used to post-heat the molten portion. It is characterized by comprising a holding roll for sandwiching the molten portion between the post-heating roll and a post-heating block for heating the peripheral surface of the post-heating roll to an appropriate temperature.

In the fusion splicer of the present invention, a melted portion that melts a predetermined portion of both edge portions of a resin sheet formed into a strip shape and a crimping portion that crimps the melted portion of the sheet melted by the melted portion to each other. The sheet is fed in the vertical direction while repeatedly pausing, and the molten portion melts by sandwiching both edge portions of the sheet in a manner that follows the longitudinal direction of the sheet. A pair of blocks are provided, and the molten portion of the sheet melted between both blocks of the melting portion is directly supplied between the melting portion and the crimping portion without being crimped, and the molten portion is sandwiched. heating unit is provided after the post-heating Te. After this, the post-heating portion post-heats the melted portion of the abutted both edge portions of the sheet, which exists between the melted portion and the crimping portion. Therefore, even when the drawing of the sheet is temporarily stopped, the portion of the sheet is maintained at an appropriate temperature, and it is possible to prevent a crimping defect in the crimping portion downstream of the post-heating portion. As a result, both edge portions of the sheet can be stably fused without raising the heating temperature in the molten portion more than necessary.

Further, in the present fusion machine , the post-heating portion is transferred to the molten portion of the sheet melted in the molten portion, and between the post-heating roll for post-heating the molten portion and the post-heating roll. It is provided with a holding roll for holding the molten portion and a post-heating block for heating the peripheral surface of the post-heating roll to an appropriate temperature .

In the present fusion machine , the above-mentioned post-heating portion is transferred to the molten portion of the sheet melted in the molten portion, and the post-heating roll for post-heating the molten portion and the post-heating roll are used. A sandwiching roll for sandwiching the molten portion is provided between the two, and the peripheral surface of the post-heating roll is heated to an appropriate temperature by a post-heating block arranged to face the peripheral surface of the post-heating roll. It is done. Here, the post-heating roll is made of a metal material having appropriate thermal conductivity. Then, when the above-mentioned portion of the sheet is sandwiched between the post-heating roll and the sandwiching roll after being heated to an appropriate temperature by the post-heating block, and the drawing of the sheet is temporarily stopped. Also keeps the portion of the sheet at an appropriate temperature. At this time, since the post-heating roll is transferred to the portion of the sheet sandwiched between the post-heating roll and the sandwiching roll, the portion of the sheet can be reliably heated, but when the drawing of the sheet is restarted, the sheet can be reliably heated. Smooth withdrawal is guaranteed without disturbing the withdrawal of the seat. On the other hand, since the post-heating roll is heated by the heating block, the post-heating portion can be made compact. As a result, the outer dimensions of the fusion splicer can be made substantially the same as the conventional dimensions, and the fusion splicer can be easily attached to the existing filling and packaging device.

(2) In the fusion splicer according to the present invention, a portion of the post-heating block facing the peripheral surface of the post-heating roll is formed into a curved recess, and the peripheral surface of the post-heating roll is formed in the recess. It is characterized in that a part of is loosely fitted.

In the fusion splicer of the present invention, the portion of the post-heating block facing the peripheral surface of the post-heating roll is a curved recess. Here, the curvature of the recess may be substantially the same as the curvature of the peripheral surface of the post-heating roll. Then, a part of the peripheral surface of the post-heating roll is loosely fitted in the recess of the post-heating block. As a result, the peripheral surface of the post-heating roll can be efficiently heated, and the temperature control accuracy of the post-heating roll is also high.

(3) In the fusion splicer according to the present invention, the peripheral surface of the post-heating roll is provided with a large-diameter region and a small-diameter region that transition to the molten portion of the sheet, and the large-diameter region is provided. by, characterized in that you have Do so that post-heating the edge region of the melting portion of the sheet. As a result, the edge regions of the abutted edges of the sheet are post-heated.

(4) The filling and wrapping device according to the present invention comprises a molded plate in which both edges of a resin sheet molded in a strip shape are continuously joined together to form a tubular shape, and a sheet molded by the molded plate. A fusion machine that melts predetermined parts of both edge portions and crimps the melted portions of this sheet to each other, a feeding means that sends the tubular body generated by the fusion machine downstream, and a filling material into the tubular body. A filling means for filling the tubular body and a sealing means for sealing the tubular body over the entire width are provided, and the downstream and upstream portions of the portion of the tubular body filled with the material to be filled are sealed over the entire width. The filling and packaging device that has been stopped and cut from the tubular body in that state is provided with the fusion splicer according to any one of (1) to (3).

In the filling and packaging apparatus of the present invention, there are a molded plate in which both edges of a resin sheet molded in a strip shape are continuously joined to form a tubular shape, and both edges of the sheet molded by the molded plate. A fusion machine that melts a predetermined part of the portion and crimps the melted parts of the sheet to each other, a feeding means that sends the tubular body generated by the fusion machine downstream, and a filling material is filled in the tubular body. It is provided with a filling means and a sealing means for sealing the tubular body over the entire width, and is downstream and upstream of the portion of the tubular body filled with the material to be filled by the feeding means and the sealing means described above. Is sealed over the entire width, and is configured to be cut from the tubular body in that state. Then, as the fusion splicer, the fusion splicer according to any one of (1) to (3) described above is provided. Therefore, the filling and packaging apparatus of the present invention exerts each of the effects described in (1) to (3) above.

It is an external front view which shows the filling packaging apparatus which concerns on this invention. It is a front view of the fusion machine shown in FIG. It is a side view of the fusion machine shown in FIG. It is a top view of the part of the fusion part of the fusion machine shown in FIGS. 2 and 3. 2 is a plan view of a portion of the rear heating portion of the fusion splicer shown in FIGS. 2 and 3. FIG. 5 is a plan view showing another example of the portion of the rear heating portion shown in FIG. 2 is a plan view of a crimping portion of the fusion splicer shown in FIGS. 2 and 3. It is a front view which shows the state which opened the rear heating part and the crimping part of the fusion machine shown in FIG. It is explanatory drawing explaining the main part structure of the filling packaging apparatus shown in FIG. It is a main part block diagram of the filling packaging apparatus disclosed in Patent Document 1.

The fusion splicer and the filling and packaging device according to the present invention will be described in detail with reference to the drawings.
It should be noted that the fusion splicer and the filling and packaging device described in the present embodiment are examples for explaining the gist of the present invention, and it goes without saying that the present invention includes deformation and modification within a range not deviating from the gist. Absent.

FIG. 1 is an external front view showing a filling and packaging device according to the present invention, and in the figure, 1 is a rectangular housing. A sheet roll R formed by winding a strip-shaped sheet is detachably installed at a position inside the housing 1 near one side of the housing 1, and is provided in front of the housing 1. The opening / closing door 10 can be opened to replace the seat roll R. A discharge port (not shown) for discharging the sheet S drawn out from the sheet roll R is provided on the other side surface of the housing 1, and the sheet S is located between the sheet roll R and the discharge port. It is hung around a plurality of arranged rolls 2, 2, ... To prevent bending and apply tension. On the other side of the housing 1, a columnar cylindrical shaping plate 4 in a vertical posture is arranged facing the discharge port, and a neck-shaped shaping plate 4 is formed in a portion near the upper end of the tubular shaping plate 4. The plate 3 is fitted on the outside.

The sheet S pulled out from the sheet roll R is guided to the neck-shaped shaping plate 3 while applying the required tension through the plurality of rolls 2, 2, ..., shaped into the neck-shaped shape there, and then arranged in the vertical direction. It is guided to a portion near the upper end of the cylindrical cylindrical shaping plate 4, and both edge portions thereof are abutted in a strip shape having a predetermined width, and the portion other than the both edge portions of the sheet S is the tubular shaping plate 4. It is molded into a cylindrical shape following the outer peripheral surface.

At the position on the lower end side of the tubular shaping plate 4, a fusion machine 5 for fusing the abutted both edges of the sheet S is arranged so as to face each other at a predetermined distance from the outer peripheral surface of the tubular shaping plate 4. The abutting edge portions of the sheet S are fused by the fusion machine 5 to form a tubular body, which is pulled out below the tubular shaping plate 4.

In the tubular shaping plate 4, one end of an injection tube 20 for injecting a liquid or gel-like filling material is inserted to a position near the lower end of the tubular shaping plate 4, and the injection tube 20 and others. The end is connected to a tank (not shown) where the material to be filled is stored. A pump P is interposed at the middle position of the injection pipe 20, and the material to be filled in the tank is fused by the operation of the pump P at both abutting edges of the sheet S as described above. It is designed to be filled into the body. The filling means is composed of the injection pipe 20, the pump P, and the like.

A pair of feed rolls 12, 12 for feeding the tubular body downstream are arranged at a lower position of the tubular shaping plate 4, and the feed rolls 12, 12 are rotatably attached to the tips of the opening / closing arms 11, 11. There is. The opening / closing arms 11 and 11 are designed so that the tip portions thereof swing in the direction of approaching and the direction of separating from the tubular body so that the feed rolls 12 and 12 sandwich the packaging bag in the packaging bag. The filling of the material to be filled into the packaging bag is stopped, the tubular body is fed downstream by a predetermined length dimension, and the feeding rolls 12 and 12 are opened to hold the packaging bag, so that the material to be filled into the packaging bag is charged. The operation of permitting filling is repeated.

Downstream of the feed rolls 12 and 12, they are arranged in parallel with each other at appropriate distances, and a pair of regulating plates 14, 14 for regulating the amount of the material to be filled in the tubular body, and a tubular shape. A sealing and cutting machine 15 for sealing the entire width area of the body to form a packaging bag and cutting the packaging bag from the tubular body is arranged in this order, and the packaging bag filled with the material to be filled is carried out. It is designed to be carried out by the machine 17.

2 and 3 are a front view and a side view of the fusion splicer 5 shown in FIG. As described above, the fusion machine 5 has a melting portion 6 in which both abutting edge portions of the sheet S are inserted through the tubular shaping plate 4 to melt the sheet S, and a molten state of the melted portion in the melting portion 6 of the sheet S. It is provided with a post-heating portion 7 for heating in order to maintain the above position, and a crimping portion 8 for crimping the melted portion of the sheet S. FIG. 4 is a plan view of the portion 6 of the fusion machine 5 shown in FIGS. 2 and 3, and FIG. 5 is a plan view of the portion 7 of the rear heating portion 7 of the fusion machine 5. FIG. Is a plan view of the crimping portion 8 of the fusing machine 5. The fusion splicer 5 according to the present invention will be described in more detail with reference to FIGS. 2 to 5 and 7.

The melting portion 6 is provided with a substantially rectangular heating block 62 that is heated by an external power supply, and the pressing block 63 that presses the abutted edge portions of the sheet S against the heating block 62 is the heating block 62. It is arranged so that it can move forward and backward. The power supply to the heating block 62 is controlled by a control unit (not shown), and the temperature is raised to a predetermined value by the control unit.

On the other hand, both internal measuring surfaces of the heating block 62 and the pressing block 63 are formed in a substantially U-shape in which the plan views face each other as shown in FIG. The abutted both edge portions of the sheet S are inserted between the heating block 62 and the pressing block 63, and the tip edges of both edge portions are formed by the heating block 62 and the pressing block 63 formed in a substantially U shape. A portion that passes through the gap portion 64 and is slightly separated from the tip edge portions of both edge portions is softly pressed against the front side edge portion of the heating block 62 by the pressing block 63 so that the portion is heated and melted. It has become.

Here, the outer surface of the pressing block 63 is supported by a first support plate 61 arranged to face each other with an appropriate gap. An elastic member such as a spring is interposed between one surface of the first support plate 61 and the outer surface of the pressing block 63 to apply an elastic force to the pressing block 63, thereby heating the object as described above. It can be pressed softly against the block 62. The other surface of the first support plate 61 is fixed to one end of the support arm 66 suspended from the first support plate 61, and the other end of the support arm 66 is connected to the advancing / retreating drive unit 67. The advancing / retreating driving unit 67 pushes the pressing block 63 while the butted edge portions of the sheet S are inserted between the heating block 62 and the pressing block 63 by a predetermined length dimension by a control unit (not shown). The operation of advancing to the heating block 62 side and then retracting the pressing block 63 for a predetermined time is repeated. When the pressing block 63 is advanced to the heating block 62 side, the abutted both edge portions of the sheet S are heated and melted, and when the pressing block 63 is retracted, the abutted both edge portions of the sheet S are formed. Is not melted by heating.

A predetermined portion of the abutted edge portions of the sheet S is melted while passing between the heating block 62 and the pressing block 63 of the melting portion 6, and the post-heating portion 7 is arranged near the exit side of the melting portion 6. Will be transported to.

The rear heating portion 7 includes a strip-shaped second support plate 72 attached in parallel with the support arm 66 of the melting portion 6, which is the front surface of the second support plate 72 and is the heating block 62 and the pressing block 63. Second axes 78 and 78 are erected at positions on the extension line of the above, respectively, so that the dimensions between the two second axes 78 and 78 can be changed. A post-heating roll 75 formed by forming a metal material in an annular shape is rotatably fitted onto the one second shaft 78 located on the extension line of the heating block 62, and is a peripheral surface of the post-heating roll 75. In the predetermined region of the above, a plurality of grooves are provided at appropriate intervals in the width direction of the post-heating roll 75. On the other hand, the other second shaft 78 is rotatably fitted with a holding roll 76 formed by forming a heat-resistant elastic material such as silicon rubber or a metal material in an annular shape, and is used for holding roll 76 and post-heating. The roll 75 sandwiches the abutted both edge portions of the sheet S conveyed from the melting portion 6. Here, on the peripheral surface of the post-heating roll 75, the diameter of the region near the second support plate 72, which is the width direction of the post-heating roll 75, is the width direction of the post-heating roll 75. Therefore, a step portion is provided so as to be smaller than the diameter of the region on the side separated from the second support plate 72, and as a result, as will be described later, the edge regions of the abutted both edge portions of the sheet S are rearward. It is heated.

In addition, corresponding to the post-heating roll 75, as shown in FIG. 6, the peripheral surface of the holding roll 76a is also in the width direction of the holding roll 76a and is on the side near the second support plate 72. The step portion may be provided by making the diameter of the region smaller than the diameter of the region on the side separated from the second support plate 72 in the width direction of the holding roll 76a. In the holding roll 76a, a region of the holding roll 76a that is transferred to the post-heating roll 75 can be formed of a heat-resistant elastic material or a metal material.

Further, a post-heating block 73 for heating the post-heating roll 75 is fixed at a position on the front surface of the second support plate 72 opposite to the holding roll 76 of the post-heating roll 75. There is. After this, the depth dimension of the post-heating block 73 is larger than the width dimension of the post-heating roll 75. Further, the portion of the side surface of the post-heating block 73 facing the post-heating roll 75 is formed into an arc-shaped recess 74 that follows the post-heating roll 75, and the post-heating roll 75 is formed in the recess 74. A part of the peripheral surface of the is fitted loosely.

The post-heating block 73 is supplied with power from a power supply unit (not shown), and the post-heating block 73 generates heat due to electrical resistance to heat the opposing post-heating rolls 75 to a required temperature. The outer peripheral surface of the post-heating roll 75 is flattened, and the width dimension thereof is substantially the same as the width dimension of the abutted both edge portions of the sheet S described above.

As described above, the abutted edge portions of the sheet S were melted at a predetermined portion while passing between the heating block 62 and the pressing block 63 of the melting portion 6, and were arranged near the exit side of the melting portion 6. It is conveyed to the post-heating unit 7, sandwiched between the post-heating roll 75 and the pinching roll 76, and post-heated to a required temperature.

Here, the temperature for post-heating the molten portion of the sheet S with the post-heating roll 75 is set to about 50 ° C. or higher and about 160 ° C. or lower. Further, the temperature for post-heating is preferably set to about 60 ° C. or higher and about 140 ° C. or lower. If the post-heating temperature is less than about 50 ° C., the effect of preventing poor fusion of both edges of the sheet S is too low, so the melting temperature in the melting portion 6 must be raised, and there is a risk of excessive melting. There is. Further, if the post-heating temperature exceeds about 160 ° C., the melting of both edges of the sheet S becomes excessive. On the other hand, when the post-heating temperature is about 60 ° C. or higher and about 140 ° C. or lower, the occurrence of fusion failure at both edges of the sheet S is surely prevented while the melting temperature in the melting portion 6 is as low as possible. It is possible to avoid excessive melting of both edges of the sheet S.

As shown in FIGS. 2, 3 and 7, a crimping portion 8 for crimping the molten portions of both edge portions of the sheet S drawn out from the melting portion 6 described above is arranged downstream of the post-heating portion 7. It is done. The crimping portion 8 includes a strip-shaped third support plate 83 attached in parallel with the second support plate 72 of the rear heating portion 7, which is the front surface of the third support plate 83 and is provided in the melting portion 6. One or more pairs (in the present embodiment) at positions on the extension lines of both the second shafts 78 and 78 provided on the heating block 62 and the pressing block 63, and the second support plate 72 of the rear heating unit 7. 2 pairs) of the third axes 88,88,88,88 are erected so that the dimensions between the paired third axes 88,88,88,88 can be changed. In the case of having a plurality of pairs of third axes 88, 88, 88, 88, the third axes 88, 88, 88, 88 forming each pair are arranged in tandem, respectively.

The first crimping rolls 81, 81 formed by forming a metal material or a heat-resistant resin material in an annular shape are rotatably formed on the third shaft 88, 88, which is located on the extension line of the heating block 62 and the second shaft 78. It is externally fitted, and a plurality of grooves are provided on the peripheral surfaces of both first crimping rolls 81 and 81 at appropriate intervals in the width direction of the first crimping rolls 81 and 81. On the other hand, the other third shafts 88 and 88 are rotatably fitted with second crimping rolls 82 and 82 formed by forming a heat-resistant elastic material such as silicon rubber in an annular shape. The 82 and the first crimping rolls 81 and 81 sandwich the both edge portions of the sheet S conveyed from the post-heating portion 7, and crimp the melted portions of the both edge portions.

The other second shaft 78 provided on the second support plate 72 and the other third shafts 88 and 88 provided on the third support plate 83 are the corresponding second shaft 78 and one. It is configured to be movable in a direction away from the third shafts 88 and 88, and as shown in FIG. 8, between the holding roll 76 provided on the second support plate 72 and the post-heating roll 75, Further, both the first crimping rolls 81 and 81 and the second crimping rolls 82 and 82 provided on the third support plate 83 can be opened. As a result, in the initial setting, the sheet S can be easily inserted between the holding roll 76 and the post-heating roll 75, and between the first crimping rolls 81, 81 and the second crimping rolls 82, 82. In addition, maintenance of each of the holding rolls 76, the post-heating roll 75, the first crimping rolls 81, 81, and the second crimping rolls 82, 82 can be easily performed.

In the present embodiment, a case where a fluid-like filler such as liquid or gel is injected into the packaging bag from the injection pipe 20 has been described, but the present invention is not limited to this and is solid. A conveyor in which a plurality of buckets for storing objects are connected at appropriate intervals may be provided, and the filling means may be configured so that solid substances are charged into the packaging bag from each bucket. In this case, it goes without saying that the above-mentioned injection pipe 20 may also be provided so as to fill the packaging bag with both the solid material and the fluid-like material to be filled.

Next, a method of manufacturing a packaging bag filled with an object to be filled by such a filling and packaging device will be described.

FIG. 9 is an explanatory diagram illustrating a main configuration of the filling and packaging apparatus shown in FIG. In the drawings, the parts corresponding to the parts shown in FIGS. 1 to 5, 7 and 8 are given the same numbers.

As shown in FIG. 9, the sheet S pulled out from the sheet roll R is guided to the neck-shaped shaping plate 3 while applying the required tension through the plurality of rolls 2, 2, ..., And is shaped into the neck-shaped shape there. After that, it is guided to a portion near the upper end of the cylindrical cylindrical shaping plate 4 arranged in the vertical direction, and both edge portions thereof are abutted in a strip shape having a predetermined width, and other than the both edge portions of the sheet S. The portion is formed into a cylindrical shape following the outer peripheral surface of the tubular shaping plate 4.

As described above, the butted edge portions of the sheet S are the heating block 62 and the pressing block 63 of the melting portion 6 constituting the fusion machine 5 arranged at the position on the lower end side of the tubular shaping plate 4 (either Also, while passing between the sheet S and the sheet S, a portion slightly separated from both edges of the sheet S is melted, and the rear heating roll 75 and the holding roll 76 (both of FIGS. 2) of the rear heating unit 7 are melted. While being sandwiched by (see), the temperature of the molten portion of the sheet S is sent to the crimping portion 8 while being heated and held, and the first crimping rolls 81, 81 and the second crimping rolls 82, 82 (referred to) arranged in the crimping portion 8 (see). While passing through both of them (see FIG. 2), both edge portions of the sheet S, where the melted portions are pressed against each other, form a tubular body T.

The filler G is injected from the injection pipe 20 into the tubular body T sent downstream from the tubular shaping plate 4, but the restricting plates 14 and 14 arranged opposite to each other inject the filling material G into the tubular body T. The amount of material G to be injected is regulated. The above-mentioned sealing and cutting machine 15 is arranged on the downstream side of the regulating plates 14 and 14, and seals the entire width region of the tubular body T with a predetermined width while sealing at a substantially central position of the sealing width. The portion is cut into a packaging bag H filled with the material to be filled G.

In the present embodiment, the case where the sealing cutting machine 15 in which the sealing means and the cutting means are combined has been described, but the present invention is not limited to this, and the sealing means and the cutting means are separately provided. Needless to say, it may be. In this case, the cutting means is arranged at a position downstream from the sealing means by an appropriate distance, but the position of the cutting means may be adjustable.

The operation of pulling out the sheet S from the sheet roll R and the operation of feeding the sheet S and the tubular body T downstream are performed by the feed rolls 12 and 12 arranged below the tubular shaping plate 4. The opening / closing arms 11 and 11 are closed, the feed rolls 12 and 12 sandwich the tubular body T, and the injection of the filling material G from the injection pipe 20 into the tubular body T is stopped. In this state, the feed rolls 12 and 12 operate to feed the tubular body T downstream by a predetermined length dimension. At this time, the heating block 62 and the pressing block 63, and the paired first crimping rolls 81, 81 and the second crimping rolls 82, 82 melt the predetermined portions of the abutted edge portions of the sheet S as described above. -The tubular body T is generated by crimping.

Next, the sealing / cutting machine 15 operates to seal the entire width region of the tubular body T with a predetermined width as described above, and cuts the sealing portion at a substantially central position of the sealing width. As a result, as shown in FIG. 9, the tip end portion of the tubular body T is sealed at the previous timing, the portion on the base end side of the region filled with the filling material G is sealed, and the tubular body T is tubular. The packaging bag H is cut from the body T and filled with the material G to be filled. On the other hand, during this period, the opening / closing arms 11 and 11 are opened for an appropriate time to fill the tubular body T with the material to be filled G, and then the opening / closing arms 11 and 11 are closed to cover the tubular body T. Filling of the filler G is stopped.

Since the feeding of the tubular body T and the sheet S to the downstream is temporarily stopped while the opening / closing arms 11 and 11 are open, the pressing block 63 of the melting portion 6 is a support arm that supports the pressing block 63. By the operation of the advance / retreat drive unit 67 and the advance / retreat drive unit 67, the heating block 62 (both see FIG. 2) is separated from the heating block 62. Then, at the timing when the opening / closing arms 11 and 11 are closed, the pressing block 63 is also brought close to the heating block 62 side.

In this way, when the feeding of the sheet S to the downstream is temporarily stopped, it is a portion melted by the melting portions 6 at both edges of the sheet S, and is a region between the melting portion 6 and the crimping portion 8. The temperature of the part located in the area drops sharply. Next, when the opening / closing arms 11 and 11 are closed, the sheet S is sent downstream, but in the conventional fusion splicer, the portion where the temperature of the sheet S has dropped is directly sent to the crimping portion 8 as described above. Since it was sent, poor fusion occurred, and if the melting temperature in the melting section 6 was raised in order to prevent this, inconvenience due to excessive melting occurred.

In the present invention, as shown in FIG. 2, when the post-heating portion 7 is arranged between the melting portion 6 and the crimping portion 8 and the feeding of the sheet S to the downstream is temporarily stopped. Even if there is, the portion that is melted by the melting portions 6 at both edges of the sheet S and is located in the region between the melting portion 6 and the crimping portion 8 is heated and maintained at an appropriate temperature. .. As a result, it is possible to prevent poor fusion due to a temperature drop at the melted portion of the sheet S, and to avoid inconvenience due to excessive melting. As a result, various materials can be used as the sheet S, and the usage of the filling and packaging device can be expanded.

3 Neck type shaping plate 4 Cylindrical shaping plate 5 Fusion machine 6 Melting part 7 Rear heating part 8 Crimping part 12 Feed roll 14 Regulation plate 62 Heating block 63 Pressing block 73 Rear heating block 75 Rear heating roll 76 Holding roll 81 1st crimping roll 82 2nd crimping roll S sheet T tubular body H packaging bag

Claims (4)

In a fusion machine provided with a melting portion that melts predetermined portions of both edge portions of a resin sheet formed in a strip shape and a crimping portion that crimps the melted portions of the sheet melted by the molten portion to each other.
The sheet is designed to be fed in the vertical direction while repeatedly pausing.
The melting portion includes a pair of blocks that sandwich and melt both edge portions of the sheet in a manner that follows the longitudinal direction of the sheet.
A post-heating portion is provided between the molten portion and the crimping portion, in which the molten portion of the sheet melted between both blocks of the melting portion is directly supplied without being crimped, and the molten portion is sandwiched and post-heated. There is
The post-heating portion is transferred to the molten portion of the sheet melted by the molten portion, and the post-heating portion is sandwiched between the post-heating roll for post-heating the molten portion and the post-heating roll. A fusion machine comprising a roll for heating and a block for post-heating that heats the peripheral surface of the post-heating roll to an appropriate temperature. The portion of the post-heating block facing the peripheral surface of the post-heating roll is a curved recess, and a part of the peripheral surface of the post-heating roll is loosely fitted in the recess. The fusion machine described. The peripheral surface of the post-heating roll is provided with a large-diameter region and a small-diameter region that transition to the molten portion of the sheet, and the large-diameter region provides an edge region of the molten portion of the sheet. The fusion splicer according to claim 1 or 2, which is designed to be post-heated. A molded plate in which both edges of a resin sheet molded in a strip shape are continuously joined to form a tubular shape, and a predetermined portion of both edges of the sheet molded by the molded plate are melted, and this sheet is formed. A fusion machine for crimping the molten portions of the above to each other, a feeding means for sending the tubular body generated by the fusion machine downstream, a filling means for filling the tubular body with a material to be filled, and the tubular body. It is provided with a sealing means for sealing over the entire width, and the downstream and upstream of the portion of the tubular body filled with the material to be filled are sealed over the entire width, and in that state, the tubular body is cut. In the filling and packaging equipment that has come to be used
A filling and packaging apparatus comprising the fusion splicer according to any one of claims 1 to 3.

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