JP2023015975A - Lateral sealing machine and filling and packaging device - Google Patents

Abstract

To provide a lateral sealing machine and filling and packaging device having the same, capable of fusing with high precision even when a wider fusing area has been set.SOLUTION: A waste heat part 67 includes a waste heat part body 167 and a leg part 168. A heating block 65 includes a heating block 65 formed with a recessed part 164a into which the leg 168 of the waste heat part 67 is fitted at the bottom part thereof and a first heater 63 built in the heating block 65. The waste heat part 67 is structured to fit the leg part 168 into the recessed part 164a of the heating block 65 to advance and retract, so that a support member 64 supporting a waste heat part body 167 to advance and retract extends from the bottom part of the heating block 65, is formed with an elastic member 68 energizing the waste heat part 67 and is further formed with a stepped part 169 on the bottom part of the waste heat part 167. The support member 64 is formed with an engagement part 64a engaging with the stepped part 169 of the waste heat part body 167.SELECTED DRAWING: Figure 4

Description

The present invention is applied to a filling and packaging apparatus that forms a belt-shaped sheet into a packaging bag and fills the inside with an object to be packaged, and a horizontal sealing machine that seals the cylindrical body formed by forming the sheet into a cylindrical shape in the width direction. and a filling and packaging apparatus equipped with the horizontal sealing machine.

In the food manufacturing industry, a filling and packaging apparatus is used that fills the inside of a packaging bag with an object to be packaged while forming a strip-shaped sheet into a packaging bag.

FIG. 8 is a block diagram of a main part of a filling and packaging apparatus disclosed in Patent Document 1, which will be described later. In the figure, R is a sheet roll formed by winding a strip-shaped sheet. The sheet S pulled out from the sheet roll R is guided to the neck shape shaping plate 130 while a required tension is applied via a plurality of rolls 120, 120, . Both edge portions of the belt-like shape are abutted against each other by a predetermined width, and the other belt-like portion follows the outer peripheral surface of the cylindrical shaping plate 140 to form a cylinder. molded into a shape.

At a position near the lower end of the cylindrical shaping plate 140, a fusing machine 150 for fusing the butted edge portions of the sheet S is arranged facing the outer peripheral surface of the cylindrical shaping plate 140 at a predetermined distance. The abutted edge portions of the sheet S are fused by the fuser 150 to form a cylindrical body T, which is pulled downward from the cylindrical shaping plate 140. A filling material such as liquid or gel is injected into T from an injection pipe 200 penetrating through the cylindrical shaping plate 140 . Below the cylindrical shaping plate 140, a pair of feed rolls 121, 121 for sandwiching the cylindrical body T and feeding it downstream, A pair of regulating plates 240, 240, a horizontal sealing machine 260 for sealing the entire width area of the cylindrical body T to form the packaging bags H, H, . The cutting machines 270 are arranged in this order, and the packaging bags H, H, .

FIG. 9 is an explanatory diagram for explaining the configuration and operation of the horizontal sealing machine 260 shown in FIG.
As shown in FIG. 9, the horizontal sealing machine 260 includes a roller body 261 having a width larger than the width of the cylindrical body T described above, and a pressure roller that rolls in contact with the cylindrical body T and presses it. A roller portion 260a and a receiving portion 260b containing a rod-shaped heater 360 for heating the cylindrical body T are arranged opposite to each other with an appropriate distance in the lateral direction. A drive unit (not shown) repeats the movement of advancing until they abut against each other and then retreating to the initial position. The contact surface of the receiving portion 260b with which the pressure roller portion 260a contacts is flat.

The pressure roller portion 260a is formed by rotatably supporting the roller body 261 on the tip of a pressure arm 264, and the base end of the pressure arm 264 is movable in the advancing and retreating directions. It is supported so as to be swingable in the perpendicular vertical direction. A spring-like elastic member 265 that biases the roller body 261 is fitted around the pressure arm 264 , and a support shaft having a length dimension shorter than that of the pressure arm 264 is provided at the bottom of the pressure arm 264 . 266 is arranged, and one end of the support shaft 266 is rotatably connected to the machine body, and the other end of the support shaft 266 is connected to a shaft 267 suspended from the tip side of the pressure arm 264 .

In the horizontal sealing machine 260 having such a configuration, as shown in FIG. 9(a), the driving section advances the pressure roller portion 260a and the receiving portion 260b by equal distances, and 2, after the pressure roller portion 260a is brought into contact with the receiving portion 260b at the central position between the pressure roller portion 260a and the receiving portion 260b, the pressure roller portion 260a is further contacted with the receiving portion 260b. By pressing the elastic member 265, as shown in FIG. Since the roller main body 261 rolls on the contact surface of the receiving portion 260b from the lower position to the upper position while receiving, the cylindrical body T is squeezed over its entire width, and the heater 360 built in the receiving portion 260b is moved. , the cylindrical body T is fused over its entirety. As a result, the material to be filled is excluded from the heating area of the cylindrical body T by the receiving portion 260b, and the occurrence of defects in the heating area of the cylindrical body T due to thermal expansion of the material to be filled during fusion bonding is prevented. Was.

Japanese Patent Application Laid-Open No. 2009-91002

However, in such a conventional horizontal sealing machine 260, since the cylindrical body T is heated by the heater 360 built in the receiving portion 260b, the fusion bonding area of the cylindrical body T is set wide. In this case, there is a risk that the entire area will not be sufficiently heated, resulting in defects due to insufficient melting in the fused area.

The present invention has been made in view of such circumstances, and includes a horizontal sealing machine capable of performing fusion with high precision even when a wider fusion area is set, and the horizontal sealing machine. A filling and packaging machine is provided.

(1) A horizontal sealing machine according to the present invention includes a first head portion and a second head portion which are arranged to face each other across a cylindrical material to be sealed which is transported in the vertical direction, and which are arranged to face each other. a driving unit for advancing and retreating in directions of approaching and separating; the first head unit is provided with a roller unit that is brought into rolling contact with the second head unit; and the second head unit heats the second head unit. A horizontal sealing machine that has a built-in heater and advances both head parts to clamp the material to be sealed, and then swings the first head in the vertical direction to melt and pressure-bond the material to be sealed. The first head portion is provided with a preheating portion for preheating the material to be sealed and a heating portion for heating the preheating portion prior to rolling contact of the roller portion. .

In the horizontal sealing machine of the present invention, the first head portion and the second head portion are arranged so as to face each other with the vertically conveyed cylindrical material to be sealed sandwiched therebetween, and the two head portions are brought closer to each other. The first head portion is provided with a roller portion that is brought into rolling contact with the second head portion, and the second head portion is provided with a heating portion that heats the second head portion. It has a built-in device. After the two head portions are moved forward to clamp the material to be sealed, the first head portion is vertically swung to melt and pressure-bond the material to be sealed.

Here, since the surface temperature of the roller portion provided in the first head portion decreases as the rolling contact distance in the second head portion increases, as the width of the fused region of the material to be sealed increases, It is necessary to set the heating temperature of the roller part high, but if the temperature is set too high, defects will occur inside or on the surface of the area of the material to be sealed that has been melt-pressed, while if the set temperature is low, the melt-pressing will be insufficient. Therefore, many defective products are produced.

However, in the horizontal sealing machine of the present invention, a preheating section for preheating the material to be sealed and a heating section for heating the preheating section are provided before the roller section comes into rolling contact with the above-described first head section. As a result, even if the set temperature of the roller portion is relatively low compared to the case where preheating is not performed, melt pressure bonding does not occur excessively or deficiently, and the material to be sealed can be melted and pressed satisfactorily.

By the way, polyester is sometimes used as a material for the material to be sealed, but since such a material has the property of becoming brittle when a high temperature is applied, it is difficult to fuse other materials to be sealed. Fusion must be performed at a low temperature, which may cause defects in fusion by the horizontal sealing machine. Therefore, the occurrence of such defects can be avoided.

(2) In the horizontal sealing machine according to the present invention, the preheating section includes a preheating section main body heated by the heating section, and the preheating section main body preheats the entire area of the material to be sealed in the width direction. It is characterized in that it is configured to

In the horizontal sealing machine of the present invention, the preheating section comprises a preheating section main body heated by the heating section, and the preheating section main body preheats the entire area of the material to be sealed in the width direction. configured. As a result, the entire area in the width direction of the material to be sealed is preheated by the main body of the preheating section. The melt pressure bonding of the material to be sealed can be satisfactorily finished over the entire area in the width direction without causing excess or deficiency.

(3) In the horizontal sealing machine according to the present invention, the preheating section includes a preheating section main body heated by the heating section and a protruding section protruding from the preheating section main body, and the protruding section is configured to preheat the central region in the width direction of the material to be sealed.

In the horizontal sealing machine of the present invention, the preheating section comprises a preheating section main body heated by the heating section and a protruding portion protruding from the preheating section main body. It is configured to preheat the central region in the width direction of the.

As the material to be sealed, there is a case in which both edge portions of a belt-shaped sheet are butted together and the butted edge portions are fused together. The fused edge portions are located, and while the number of sheets is four, there is no such situation in other areas in the width direction of the material to be sealed. As for the number of sheets, two sheets are laminated. Therefore, when the material to be sealed is laterally sealed, by preheating the central area in the width direction of the material to be sealed by the protruding portion, the other areas in the width direction of the material to be sealed are not affected. Even with four sheets, it is possible to sufficiently fuse the entire area of the material to be sealed in the width direction without causing defective fusion.

(4) In the horizontal sealing machine according to the present invention, the first head portion is oscillated from the upstream side to the downstream side in the vertical direction, and the roller portion is the first head portion and moves in the vertical direction. and the preheating section is arranged on the upstream side of the first head section in the vertical direction.

In the horizontal sealing machine of the present invention, the first head portion is oscillated from the upstream side to the downstream side in the longitudinal direction. Even if there is, the filled liquid is prevented from entering the melt-pressed region of the material to be sealed. Therefore, regardless of the material filled in the material to be sealed, it is possible to prevent defects from occurring in the melt pressure bonding area of the material to be sealed.

In the horizontal sealing machine of the present invention, the roller portion is arranged upstream of the first head portion which swings from the upstream side to the downstream side in the vertical direction, and the preheating portion is arranged on the downstream side in the vertical direction. A portion of the material to be sealed which is preheated by the preheating portion is melted and pressure-bonded by the roller portion.

(5) In the horizontal sealing machine according to the present invention, the preheating section includes a preheating section main body that contacts the second head section, and a leg that extends from the preheating section main body to the opposite side of the second head section. The heating unit comprises a heating block provided with a recess in which the legs of the preheating unit are fitted in the bottom of the heating unit, and a heater built into the heating block. The leg portion of the preheating portion is fitted in the concave portion of the heating block so as to be movable back and forth. Further, a stepped portion is provided at the bottom of the preheating portion main body at a position a predetermined distance from the contact surface that contacts the second head portion. The supporting member is provided with an engaging portion that engages with the stepped portion of the preheating portion main body, and when the engaging portion of the supporting member engages with the stepped portion of the preheating portion main body, the preheating portion main body abuts. It is characterized in that the surface protrudes from the roller portion toward the second head portion by a predetermined dimension.

In the horizontal sealing machine of the present invention, the preheating section includes a preheating section main body that abuts on the second head section, and a leg section that extends from the preheating section main body to the opposite side of the second head section. In addition, the heating unit comprises a heating block provided with a recess for fitting the legs of the preheating unit at the bottom, and a heater built into the heating block, The legs of the preheating part are fitted into the recesses of the heating block so as to move back and forth. The heating block is heated by the heater, and the heat is conducted to the residual heat portion whose leg portion is fitted in the concave portion of the heating block so as to move back and forth.

The preheating section main body is movably supported by a supporting member extending from the bottom of the heating block. In addition, while the preheating portion is configured to be biased toward the second head portion by the elastic member, it is located at the bottom of the preheating portion main body described above and is located at a predetermined distance from the abutting surface that is brought into contact with the second head portion. A stepped portion is provided at a spaced apart position, and the support member is provided with an engaging portion that engages with the stepped portion of the preheating section main body. When the engaging portion of the supporting member is engaged with the stepped portion of the residual heat portion main body, the contact surface of the residual heat portion main body protrudes from the roller portion toward the second head portion by a predetermined dimension.

In this way, since the main body of the preheating section of the first head section protrudes from the roller section by a predetermined distance, the main body of the preheating section contacts the material to be sealed at a timing earlier than the timing at which the roller section contacts the material to be sealed. Since they are in contact with each other, the material to be sealed can be sufficiently preheated.

On the other hand, the first head portion and the second head portion move forward until the roller portion comes into contact with the second head portion. is avoided.

Further, when the melt pressure bonding of the material to be sealed is completed, the first head portion and the second head portion are retracted to their original positions by the driving portion. Then the residual heat part advances. At this time, a stepped portion is provided at the bottom of the preheating section main body at a position a predetermined distance from the contact surface that contacts the second head section, and the support member is engaged with the stepped portion of the preheating section main body. When the engaging portion of the supporting member is engaged with the stepped portion of the preheating section main body, the contact surface of the preheating section main body protrudes from the roller section toward the second head section by a predetermined dimension. Therefore, when the first head portion and the second head portion are brought into contact with each other again by the driving portion, the main body of the preheating portion is brought into contact with the material to be sealed at a timing earlier than the timing at which the roller portion contacts the material to be sealed, as before. contacts the material to be sealed.

(6) The horizontal sealing machine according to the present invention is characterized in that the heating block is provided with a semi-cylindrical concave portion, and the roller portion is loosely fitted in the semi-cylindrical concave portion.

In the horizontal sealing machine of the present invention, the heating block described above is provided with a semi-cylindrical recess, and the roller portion is loosely fitted in this semi-cylindrical recess, whereby the peripheral surface of the roller portion is can also be heated, and the material to be sealed can be melted and crimped reliably without causing defects.

(7) In the horizontal sealing machine according to the present invention, the ceiling of the preheating section body is arranged so as to face the peripheral surface of the roller section, and the ceiling of the preheating section body follows the semi-cylindrical recess. It is characterized by being molded in an arc shape.

In the horizontal sealing machine of the present invention, the ceiling of the preheating section main body is arranged so as to face the peripheral surface of the roller section. It is molded in an arc shape that follows the recessed part. As a result, the roller portion is heated not only by the heating block but also by the main body of the preheating portion, so that the heating efficiency of the roller portion is high. Therefore, since the roller portion can be raised to a predetermined set temperature in a shorter time, it is possible to cope with even a case where the conveying speed of the material to be sealed is increased.

(8) The horizontal sealing machine according to the present invention is characterized in that a receiving portion for receiving the residual heat portion is provided vertically on the bottom portion of the second head portion.

In the horizontal sealing machine of the present invention, since the receiving portion for receiving the residual heat is provided vertically on the bottom portion of the second head portion, the first head portion can be swung from the upstream side to the downstream side in the vertical direction. When the preheated portion of the first head portion is disengaged from the contact surface of the second head portion by being moved, the receiving portion can receive the preheated portion. This prevents the preheated portion from protruding toward the bottom of the second head portion due to the biasing force from the elastic member, and prevents the preheated portion and the second head portion from damaging each other.

(9) In the horizontal sealing machine according to the present invention, the receiving surface of the receiving portion for receiving the preheated portion is arranged such that the distance from the surface of the second head portion with which the first head portion abuts is the downstream side in the longitudinal direction. It is characterized by a tapered shape that becomes longer as it goes.

In the horizontal sealing machine of the present invention, the receiving surface of the receiving portion for receiving the residual heat portion is positioned so that the distance from the surface of the second head portion with which the first head portion abuts is directed to the downstream side in the vertical direction. Since the elastic member is tapered to become longer as it increases, excessive contraction of the elastic member is prevented as the residual heat portion slides further downstream, and damage to the elastic member is avoided.

(10) The filling and packaging apparatus according to the present invention includes a forming plate for continuously joining both edge portions of a resin sheet formed into a belt shape to form a cylindrical shape, and a sheet formed by the forming plate. A fusing machine that melts predetermined portions of both edge portions and presses the melted portions of the sheets together; feeding means that feeds the cylindrical material to be sealed produced by the fusing machine downstream; and a horizontal sealing machine for fusing the material to be sealed over the entire width, and the downstream and upstream portions of the material to be sealed filled with the material to be sealed cover the entire width. A filling and packaging apparatus configured to cut from the tubular body while each of the tubular bodies is sealed over the entire length, characterized by comprising the horizontal sealing machine according to any one of (1) to (9). .

In the filling and packaging apparatus of the present invention, both the forming plate for forming a tubular shape by continuously joining both edge portions of a resin sheet formed into a belt shape, and the sheet formed by the forming plate. A fusing machine that melts a predetermined portion of an edge portion and presses the melted portions of the sheets together; a sending means that feeds the cylindrical material to be sealed produced by the fusing machine downstream; and into the material to be sealed. A filling means for filling the material to be filled and a horizontal sealing machine for fusing the material to be sealed over the entire width, and the downstream and upstream portions of the material to be sealed filled with the material to be sealed extend over the entire width. In a filling and packaging apparatus configured to cut from the cylindrical body in a state where each is sealed by the above, the horizontal sealing machine according to any one of the above (1) to (9) is provided. Each effect is exhibited.

BRIEF DESCRIPTION OF THE DRAWINGS It is an external front view which shows the filling packaging apparatus which concerns on this invention. FIG. 2 is an enlarged view showing the regulating plate and the horizontal sealing machine portion of the filling and packaging apparatus shown in FIG. 1 together with the drive section of the horizontal sealing machine. FIG. 3 is a partially broken plan view showing the horizontal sealing machine shown in FIG. 2 together with its driving portion; FIG. 4 is a partially broken enlarged side view showing the first head portion shown in FIGS. 2 and 3; FIG. FIG. 4 is an explanatory diagram for explaining the operation of the horizontal sealing machine shown in FIGS. 2 and 3; FIG. It is a schematic partially broken enlarged side view of the 1st head part which concerns on the 2nd form for implementing this invention. FIG. 7 is a plan view of the preheating section shown in FIG. 6; 1 is a configuration diagram of a main part of a filling and packaging apparatus disclosed in Patent Document 1; FIG. FIG. 9 is an explanatory diagram for explaining the configuration and operation of the horizontal sealing machine shown in FIG. 8;

A horizontal sealing machine and a filling and packaging apparatus according to the present invention will be described in detail with reference to the drawings.
The horizontal sealing machine and the filling and packaging apparatus 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 modifications and alterations within a range that does not deviate from the gist of the invention. do not have.

(First mode for carrying out the invention)
FIG. 1 is an external front view showing a filling and packaging apparatus according to the present invention. In the figure, 1 is a rectangular housing. Inside the housing 1 and near one side of the housing 1, a sheet roll R formed by winding a strip-shaped sheet is detachably installed. The opening/closing door 10 is opened so that the sheet roll R can be replaced. A discharge port (not shown) for discharging the sheet S pulled out from the sheet roll R is formed on the other side surface of the housing 1, and the sheet S is disposed between the sheet roll R and the discharge port. It is wound around a plurality of arranged rolls 2, 2, . . . to prevent bending and apply tension. On the other side of the housing 1, a cylindrical shaping plate 4 in a vertical posture is disposed facing the discharge port. A plate 3 is fitted on the outside.

A sheet S pulled out from a sheet roll R is guided to a neck shape shaping plate 3 while a required tension is applied through a plurality of rolls 2, 2, . The sheet S is guided to the vicinity of the upper end of the cylindrical shaping plate 4, and both edges of the sheet S are abutted in strips of a predetermined width. It is molded into a cylindrical shape following the outer peripheral surface.

At the position on the lower end side of the cylindrical shaping plate 4, a fusing machine 5 for fusing the butted edge portions of the sheet S is arranged facing the outer peripheral surface of the cylindrical shaping plate 4 at a predetermined distance. The fusing machine 5 fuses the butted edge portions of the sheet S to form a cylindrical body (material to be sealed), which is drawn downward from the cylindrical shaping plate 4 . .

One end of an injection tube 20 for injecting a filling material such as liquid or gel is inserted into the cylindrical shaping plate 4 so as to project slightly from the lower end of the cylindrical shaping plate 4. The other end of 20 is connected to a tank (not shown) in which the filling material is stored. A pump P is interposed at an intermediate position of the injection pipe 20. By the operation of the pump P, the material to be filled in the tank is formed into a cylindrical shape by fusing the butted edge portions of the sheet S as described above. It is designed to be filled into the body. The injection pipe 20, the pump P, and the like constitute filling means.

A pair of feed rolls 12, 12 for feeding the cylindrical body downstream are disposed at a position slightly lower than the lower end of the cylindrical shaping plate 4, and the feed rolls 12, 12 rotate at the tips of the opening and closing arms 11, 11. installed as possible. The opening/closing arms 11, 11 are designed such that their distal end portions swing toward and away from the cylindrical body, thereby causing the feeding rolls 12, 12 to pinch the packaging bag, thereby moving the packaging bag inside the packaging bag. At the same time as stopping the filling of the filling material into the packaging bag, the cylindrical body is sent downstream by a predetermined length, and the feeding rolls 12, 12 release the nipping of the packaging bag to fill the packing bag with the filling material. The action of permitting filling is repeated.

Downstream of the feed rolls 12, 12, a pair of regulating plates 14, 14 are erected parallel to each other with an appropriate distance therebetween for regulating the amount of filling material to be filled in the tubular body, and the tubular body. A horizontal sealing machine 6 for sealing the entire width area of the shaped body to form a packaging bag, and a cutting machine 17 for cutting the packaging bag sealed by the horizontal sealing machine 6 from the cylindrical body are arranged in this order. , the packaging bag filled with the material to be filled is carried out by a carry-out machine (not shown).

2 is an enlarged view showing the regulating plates 14, 14 and the horizontal sealing machine 6 of the filling and packaging apparatus shown in FIG. 1 together with the driving part of the horizontal sealing machine 6. FIG. Fig. 4 is a partially broken plan view showing the machine 6 together with its drive; The configuration of the horizontal sealing machine 6 according to the present invention will be described in detail with reference to these drawings. In both figures, the parts corresponding to the parts shown in FIG. 1 are given the same numbers. 2 and 3, part of the configuration is omitted.

As shown in FIGS. 2 and 3, the horizontal sealing machine 6 has a pair of head portions for sandwiching and heat-sealing the tubular body T described above, which are arranged to face each other at an appropriate distance in the horizontal direction. One of the pairs is a first head portion 61 comprising a preheating portion 67 for preheating the cylindrical body T and a roller portion 66 for rolling contact with the cylindrical body T preheated by the preheating portion 67, The other is a second head portion 62 that receives the first head portion 61 . Here, the width dimension of the first head portion 61 and the second head portion 62 is made larger than the width dimension of the tubular body T. As shown in FIG.

The second head portion 62 is shaped like a strip having a length dimension larger than the width dimension of the cylindrical body, and the contact surface 162 of the second head portion 62 is substantially flat. Near the contact surface 162 of the second head portion 62 , a rod-shaped second heater 69 is incorporated over substantially the entire length of the contact surface 162 . A strip-shaped second substrate 73 is arranged parallel to the second head portion 62 on the side opposite to the contact surface 162 of the second head portion 62 . supported and fixed. On the surface of the second substrate 73 opposite to the second head portion 62, a tip end of a second advancing/retreating rod 92 constituting the driving portion 9, which will be described later, is fixed.

In this embodiment, the case where the second head portion 62 is supported and fixed to the second substrate 73 has been described, but the present invention is not limited to this. For example, while two short support cylinders are fixed at a distance from each other, one end of each of the support cylinders is fixed to the second head portion 62, and a support for supporting the second head portion 62 is provided. The other end of the support shaft is inserted forward and backward, and the two support cylinders and the support shafts for both receivers are fitted between the second head portion 62 and the second substrate 73, respectively. An elastic member such as a spring member may be interposed, and the elastic member may bias the second head portion 62 toward the first head portion 61 side.

As a result, the contact time between the second head portion 62 and the cylindrical body T can be lengthened, and the cylindrical body T can be sufficiently heated even when the feeding speed of the cylindrical body T is increased. can be done.

On the other hand, both sides of the first head portion 61 are sandwiched between plate-shaped side support pieces 70 , 70 , and the side support pieces 70 , 70 are positioned so that the second head portion 62 is positioned relative to the first head portion 61 . It is supported by a band plate-like support plate 71 installed on the opposite side.

4 is a partially broken enlarged side view showing the first head portion 61 shown in FIGS. 2 and 3. FIG. In the figure, the same numbers are given to the parts corresponding to the parts shown in FIGS.

As shown in FIG. 4, the first head portion 61 is provided with a roller portion 66 that is brought into rolling contact with the contact surface 162 of the second head portion 62. The roller portion 66 is the side support piece 70 ( 70) is rotatably supported. A heating block 65 is interposed between the roller portion 66 and the support plate 71, and the heating block 65 constituting the heating portion is fixed to the support plate 71 with a predetermined distance therebetween. A substantially bird's head-shaped heating block 65 has a square neck portion 164 and a head portion 165 larger in size than the neck portion 164. The neck portion 164 is provided with a rod-like first heater 63 constituting a heating portion. It is built in over substantially the entire length of the first head portion 61 .

A semi-circular concave portion 165 a is provided in a region facing the second head portion 62 of the heating block 65 from the head portion 165 to the neck portion 164 . Approximately half of the radial portion of the roller portion 66 described above is fitted in the semi-circular concave portion 165a with an appropriate gap between it and the heating block 65, whereby the roller portion 66 is , a part of which protrudes from the semicircular recess 165a.

On the other hand, a recess 164a is provided in the bottom of the neck portion 164 and in a substantially central region in the longitudinal direction of the neck portion 164 so as to pass through the neck portion 164 in the thickness direction. A leg portion 168 is inserted so as to be slidable in the advance and retreat direction. The preheating portion 67 is located on the bottom side of one side surface of a preheating portion main body 167 formed by erecting the short side of a strip material, and has a short leg portion 168 projecting from substantially the central portion in the longitudinal direction. , which is T-shaped in plan view. A plurality of holes 168a (168a, . . . ) are provided on the surface of the leg portion 168 facing the support plate 71, and each hole 168a (168a, . spring) 68 (68, . . . ) are inserted. The other end of each elastic member 68 (68, . . . ) is in contact with the support plate 71, and when the residual heat portion 67 retreats, the elastic member 68 (68, . . . ) is biased forward. ing.

At the bottom of the heating block 65, a support member 64 made by bending a strip material into a lateral L-shape and supporting the residual heat portion 67 is fixed by a fixture 163 (163) suspended from the heating block 65, The support member 64 supports the residual heat portion 67 so as to be able to advance and retreat. Further, the tip region of the support member 64 extends from the heating block 65 toward the second head portion 62 side, and the bent engaging portion 64a of the support member 64 is connected to the stepped portion 169 provided at the bottom portion of the leg portion 168. is adapted to engage the As described above, the residual heat portion 67 is supported by the support member 64 so as to be movable back and forth, and the bent engaging portion 64a of the support member 64 is engaged with the stepped portion 169 of the leg portion 168 so that the residual heat portion 67 is moved from a predetermined position. It is designed to prohibit forward movement.

On the other hand, the ceiling of the preheating section main body 167 is formed into a roll heating section 167b for heating the outer peripheral surface of the roller section 66 by forming an arcuate curvature corresponding to the curvature of the peripheral surface of the roller section 66. As shown in FIG. A preheating surface 167a of the preheating section main body 167 facing the second head section 62 is tapered so that the width dimension of the preheating section main body 167 decreases from the ceiling toward the bottom surface. When the first head portion 61 is in contact with the second head portion 62 in a slightly upward posture, the preheating surface 167a of the first head portion 61 and the contact surface 162 of the second head portion 62 are parallel to each other. It is designed to abut on the

Further, the preheating section main body 167 is configured so that a part of the preheating surface 167a protrudes from the outer peripheral surface of the roller section 66 by about 1 to 2 mm when the first head section 61 is not in contact with the second head section 62. There is.

The outer peripheral surface of the roller portion 66 described above is formed as a heating surface for heating the cylindrical body T (see FIG. 2) described above by suitably molding heat-resistant resin such as silicone rubber or metal. The heat generated by the first heater 63 built in the heating block 65 is conducted through the heating block 65 and applied to the roller portion 66 from the peripheral surface of the semi-circular concave portion 165a. The heat is conducted to the residual heat portion and applied to the roller portion 66 from the inner peripheral surface of the roll heating portion 167b, so that the outer peripheral surface of the roller portion 66 is heated to a required value. Further, the heat conducted to the preheating portion 67 raises the temperature of the preheating portion main body 167 and the preheating surface 167a to a required value.

By the way, as shown in FIGS. 2 to 4, one ends of pressure arms 75, 75 for applying a pressing force to the first head portion 61 are provided at positions facing the roller portion 66 of the support plate 71 described above. are connected. On the other hand, at a position separated from the support plate 71 by a predetermined distance, a strip-shaped first substrate 72 is arranged parallel to the support plate 71, and a universal joint 74 (74 ), the other ends of the pressure arms 75, 75 are supported so as to be swingable and slidable in the universal joint 74 (74). Elastic members (spring members in this embodiment) 76, 76 such as spring members are fitted to the pressurizing arms 75, 75, and the support plate 71 is secured by the elastic members 76, 76 to the second head facing thereto. It is adapted to be biased toward the portion 62 side.

On the other hand, the above-described side support pieces 70, 70 are extended to a position higher than the ceiling of the heating block 65, and support shafts 77, 77 having a length dimension shorter than the pressure arms 75, 75 are attached to the extended portions. are rotatably connected to each other. The support shafts 77 , 77 are provided with length adjusting members 78 , 78 such as turnbuckles, and the other end of the support shafts 77 , 77 is higher than the position where the pressure arms 75 , 75 of the first substrate 72 are connected. It is pivotally connected to the position.

The support shafts 77, 77 are substantially parallel to the second head portion 62, i.e. substantially horizontal, when the first head portion 61 and the second head portion 62 are not in contact with each other. On the other hand, the pressurizing arms 75, 75 are in an inclined posture in which the height position rises as they are separated from the first substrate 72. As shown in FIG. The first head portion 61 and the second head portion 62 are slanted so that the distance between the first head portion 61 and the second head portion 62 decreases from the ceiling toward the bottom, and the roller portion 66 rolls in contact with the second head portion 62. The upstream end of the region faces the upper end of the contact surface 162 of the second head portion 62 . At this time, the preheating portion 67 of the first head portion 61 faces the area on the downstream side including the substantially central position of the contact surface 162 .

As a result, as will be described later, the first head portion 61 and the second head portion 62 are brought into contact with each other, and when a further pressing force is applied, the elastic members 76 contract and the first head portion 61 and the first head portion 61 and this expand. While the support plate 71 that supports the is retracted, the pressure arms 75, 75 and the support plate 71 and the first head portion 61 swing toward the downstream side in the vertical direction along which the cylindrical body T is conveyed, the contact surface 162 of the second head portion 62 is exposed to residual heat that forms the first head portion 61 . After the preheating surface 167a of the portion 67 has slid from the upstream side to the downstream side in the vertical direction, the roller portion 66 comes into rolling contact with it.

At this time, as described above, the preheating surface 167a of the preheating portion 67 is tapered so that the width dimension of the preheating portion body 167 decreases from the ceiling toward the bottom surface, while the first head portion 61 has a tapered shape. Since the distance between the second head portion 62 and the second head portion 62 is inclined toward the bottom, the preheating surface 167a of the preheating portion 67 and the contact surface 162 of the second head portion 62 are parallel to each other. contact in a positive posture.

After the preheating surface 167a of the preheating portion 67 constituting the first head portion 61 slides from the upstream side to the downstream side in the longitudinal direction to preheat the fused region of the cylindrical body T, the preheating surface 167a is continuously heated. Since the roller portion 66 is configured to roll-contact the preheated fusion bonding area, even if a wider fusion bonding area is set, the fusion bonding area of the cylindrical body T can be fused with high accuracy. can.

Here, as shown in FIG. 2, on the bottom of the second head portion 62, a residual heat portion 67 is slid on the contact surface 162 of the second head portion 62 from the upstream side to the downstream side in the vertical direction. A receiving portion 81 is provided vertically so that when the residual heat portion 67 of the first head portion 61 deviates from the contact surface 162 of the second head portion 62 toward the downstream side in the vertical direction, the receiving portion 81 is Since the residual heat portion 67 is received, the residual heat portion 67 is prevented from protruding toward the bottom side of the second head portion 62 due to the bias from the elastic members 68 (68, . . . ), and the residual heat portion 67 and the second head portion 62 are mutually Mutual damage is avoided.

The receiving surface 81a of the receiving portion 81 with which the residual heat portion 67 is in sliding contact has a tapered shape in which the distance in the horizontal direction from the contact surface 162 of the second head portion 62 increases toward the downstream side in the vertical direction. This prevents excessive contraction of the elastic member 68 (68, . …) from being damaged.

At this time, the angle formed by the second head portion 62 and the tapered receiving surface 81a of the receiving portion 81 is preferably 15° to 25°. If the formed angle is less than 15°, the elastic member 68 (68, . This is because the portion 67 and the second head portion 62 may damage each other.

On the other hand, the tip portions of the first advancing/retreating rods 91, 91 constituting the driving portion 9 are fixed to both side edge portions of the first substrate 72 described above, and the first substrate 72 includes the first advancing/retreating rods 91, It is supported at 91 so as to be able to move forward and backward in the longitudinal direction of the first forward/backward rods 91 and 91 .

As the drive unit 9, for example, as shown in FIGS. 2 and 3, a cam shaft 95 is arranged parallel to the first head unit 61 and the second head unit 62 at a position spaced apart from the inner surface of the housing 1 by a predetermined distance. Then, the cam shaft 95 can be configured to be rotationally driven by a motor (not shown). On this cam shaft 95, a first rice-ball-shaped cam 93 for driving the first head portion 61 forward and backward and a second rice-ball-shaped cam 94 for driving the second head portion 62 forward and backward are arranged in rotationally symmetrical postures. They are fitted and fixed on the shaft 95 with a predetermined distance in the longitudinal direction. The first cam 93 is operated via a cam follower 96 arranged on the opposite side of the camshaft 95 from the first head portion 61 and a lever 97 vertically provided from the base ends of the first advancing/retreating rods 91 , 91 . The first advancing/retreating rods 91, 91 are driven to advance/retreat, and the second cam 94 is vertically provided from the base ends of the cam follower 98 and the second advancing/retreating rod 92 arranged on the second head portion 62 side of the cam shaft 95. Via the lever 99, the second advancing/retreating rod 92 is driven to advance/retreat in synchronization with the first advancing/retreating rods 91,91.

The first advancing/retreating rods 91 and 91 and the second advancing/retreating rod 92 constituting the driving unit 9 are passed through the wall surface of the housing 1, and the first advancing/retreating rods 91 and 91 further pass through the second substrate 73. and fixed to the first substrate 72 . On the other hand, the second advancing/retreating rod 92 is fixed to the central portion of the back surface of the second substrate 73 opposite to the second head portion 62 .

By the operation of the driving portion 9, the first head portion 61 and the second head portion 62 move forward in the direction of approaching each other, and the first head portion 61 and the second head portion 62 come into contact with each other. Furthermore, when a force is applied from the driving portion 9 to cause both of them to abut against each other, the elastic members 76, 76 of the first head portion 61 gradually contract as described above, and the first head portion 61 and the first head portion 61 are supported. While the support plate 71 retreats, the pressing force applied from the support shafts 77, 77 to the side support pieces 70, 70 causes the universal joint 74 (74), the pressure arms 75, 75, the support plate 71 and the first The head portion 61 swings to the downstream side in the vertical direction. Therefore, the preheating surface 167a of the preheating portion 67 constituting the first head portion 61 slides on the contact surface 162 of the second head portion 62 from the upstream side to the downstream side in the vertical direction. 66 rolls.

In this manner, the heated region of the cylindrical body T is melted and pressure-bonded while being squeezed from the upstream side to the downstream side in the vertical direction, which is the conveying direction.

FIG. 5 is an explanatory diagram for explaining the operation of the horizontal sealing machine 6 shown in FIGS. 2 and 3. Using this diagram, the procedure for horizontal sealing of the cylindrical body will be explained. In FIG. 5, parts corresponding to those in FIGS. 2 and 3 are assigned the same numbers.

As shown in FIG. 5(a), the first head portion 61 and the second head portion 62 of the horizontal sealing machine 6 are at the starting position separated by a preset gap. The contact surface 162 of the second head portion 62 is oriented obliquely upward with respect to the vertical direction. The conveyed cylindrical body T is inserted between the first drive head portion 61 and the second head portion 62 . On the other hand, the first heater 63 of the first head portion 61 and the second heater 69 of the second head portion 62 cause the roller portion 66 and preheat portion 67 of the first head portion 61 and the second head portion 62 to contact each other. Surface 162 has been heated to the required value.

When forward driving force is applied to the first advancing/retreating rod 91 and the second advancing/retreating rod 92 at a predetermined timing from the driving portion 9 (see FIGS. 2 and 3), the first head portion 61 and the second head portion 62 move. Start moving towards each other.

The first head portion 61 and the second head portion 62 move forward with each other by a predetermined distance, and the first head portion 61 and the second head portion 62 come into contact with each other to sandwich the cylindrical body T, as shown in FIG. ), the upstream end of the rolling contact area of the roller portion 66 with the second head portion 62 of the first head portion 61 is positioned at the upper end of the contact surface 162 of the second head portion 62, and The preheating portion 67 of the 1 head portion 61 is positioned in a region including the substantially central position of the contact surface 162 and downstream therefrom. Therefore, the downstream portion of the fused region of the cylindrical body T including the substantially central position is sandwiched and preheated by the preheating portion 67 of the first head portion 61 and the second head portion 62, and the cylindrical body T is fused. A portion of the attachment area on the upstream side of the substantially central position is sandwiched between the roller portion 66 of the first head portion 61 and the second head portion 62 and melted and pressure-bonded.

At this time, since the preheated portion 67 of the first head portion 61 protrudes slightly from the roller portion 66 as described above, the preheated portion 67 reaches the cylindrical body T at a timing earlier than the timing at which the roller portion 66 contacts the cylindrical body T. T, so that the fused region of the tubular body T can be sufficiently preheated.

On the other hand, since the preheating portion 67 of the first head portion 61 is supported by the heating block 65 so as to move back and forth, the elastic member 68 (68, . . . ) contracts and the preheating portion 67 retreats. Then, the roller portion 66 rolls against the upstream end of the contact surface 162 of the second head portion 62 with the cylindrical body T interposed therebetween, and the upstream end of the fused region of the cylindrical body T is melt-pressed.

When the forward driving force is further applied while the first head portion 61 and the second head portion 62 are in contact with each other, as shown in FIG. ) gradually shrinks, the first head portion 61 and the support plate 71 supporting it retreat, while the pressing force applied from the support shaft 77 (77) to the side support piece 70 (70) , the pressure arm 75 (75), the support plate 71 and the first head portion 61 swing through the universal joint 74 (74) to the downstream side in the vertical direction where the cylindrical body T is transferred. Therefore, the preheating surface 167a of the preheating portion 67 constituting the first head portion 61 slides on the contact surface 162 of the second head portion 62 from the upstream side to the downstream side in the vertical direction. 66 rolls continuously to the downstream end of the contact surface 162 .

Since the surface temperature of the roller portion 66 decreases as the rolling contact distance increases, it is necessary to increase the set temperature of the roller portion 66 as the width of the fused region of the cylindrical body T increases. If the temperature is set too high, defects will occur inside or on the surface of the melt-pressed area of the cylindrical body T, whereas if the temperature is set too low, the melt-pressing will be insufficient, resulting in many defective products.

However, as described above, the region including the substantially central position of the contact surface 162 of the second head portion 62 and downstream therefrom, that is, the fused region of the cylindrical body T and the rear half side where the roller portion 66 is in rolling contact. , is preheated by the preheating portion 67 of the first head portion 61 and the contact surface 162 of the second head portion 62, the set temperature of the roller portion 66 is relatively low compared to the case where preheating is not performed. Even if it is relatively low, the melt pressure-bonding of the cylindrical body T is not excessive or insufficient, and the melt pressure-bonding of the cylindrical body T can be finished satisfactorily.

Here, when the roller portion 66 of the first head portion 61 rolls into contact with the contact surface 162 of the second head portion 62 and is positioned at the downstream end of the contact surface 162 of the second head portion 62 , the residual heat portion 67 of the first head portion 61 is discharged from the contact surface 162 . Since the residual heat portion 67 is disengaged downstream, it tries to move forward beyond the contact surface 162 due to the bias of the elastic member 68 (68, . . . ). 5(c), the preheating portion 67 abuts against the tapered receiving surface 81a provided in the receiving portion 81, whereby the preheating portion 67 and the second head portion 62 are brought into contact with each other. are avoided from damaging each other.

As described above, the receiving surface 81a is tapered at an angle of 15° to 25° with respect to the second head portion 62, so that excessive contraction of the elastic member 68 (68, . . . ) can be prevented. This can be prevented, the life of the elastic member 68 (68, . . . ) can be lengthened, and the running cost can be reduced.

At the timing when the melt pressure bonding of the fused region of the cylindrical body T is completed in this manner, the first advancing/retreating rod 91 and the second advancing/retreating rod 92 are supplied with a retreating driving force from the driving portion 9 (see FIGS. 2 and 3). is given, and the first head portion 61 and the second head portion 62 begin to recede in a direction separating from each other.

When the first head portion 61 and the second head portion 62 begin to retreat due to the operation of the drive portion 9, the support plate 71 and the first head portion 61 are returned to their original positions by the biasing forces of the elastic members 76, 76 (see FIG. 3). position, the pressure arm 75 (75), the support plate 71 and the first head portion 61 swing through the universal joint 74 (74) to the upstream side in the vertical direction where the cylindrical body T is transferred. Move to return to original position. Also, the residual heat portion 67 of the first head portion 61 protrudes from the roller portion 66 by a predetermined length due to the biasing force of the elastic members 68 (68, . . . ), and the distance between the first head portion 61 and the second head portion 62 becomes Restore to original value. At this time, since the bent engaging portion 64a of the support member 64 that supports the preheating portion 67 engages with the stepped portion 169 (see FIG. 4) of the preheating portion 67, the preheating portion 67 is positioned ahead of the predetermined position. It is prohibited to advance to

This series of operations is carried out at preset timings, and the cutting machine 17 shown in FIG. By cutting, the packaging bag H sealed by the horizontal sealing machine 6 is cut from the cylindrical body T. As shown in FIG.

As described above, the fused region of the cylindrical body T, which is located on the rear half side where the roller portion 66 rolls, is the contact surface between the preheat portion 67 of the first head portion 61 and the second head portion 62 . 162, even if the set temperature of the roller portion 66 is relatively low compared to the case where preheating is not performed, melt pressure bonding does not occur excessively or deficiently, and the cylindrical body T is well melted and pressure bonded. can be finished.

Further, since the first head portion 61 is configured to swing from the upstream side to the downstream side in the vertical direction, even when the packaging bag H is filled with a filling material such as liquid or gel, , the filling material can be prevented from entering the fused region of the cylindrical body T as much as possible, thereby avoiding defects in the melt-pressed portion of the cylindrical body T. be.

On the other hand, the first head portion 61 and the second head portion 62 are continuously driven without being stopped and/or re-driven, and the drive control of the first head portion 61 and the second head portion 62 is relatively controlled. It can be implemented easily and with high precision. Therefore, the cylindrical body can be heated with high accuracy.

(Second mode for carrying out the invention)
FIG. 6 is a schematic partially cutaway enlarged side view of a first head portion 61 according to a second embodiment of the present invention, in which 67 is a preheating portion. 7 is a plan view of preheating section 67 shown in FIG. In both figures, the same numbers are given to the parts corresponding to the parts shown in FIGS. 2 to 4, and the explanation thereof is omitted.

As shown in FIGS. 6 and 7, in the heating block 65 according to the present embodiment, recesses 164a (164a) are formed on the bottom side of the neck portion 164 and near both edges of the neck portion 164 in the longitudinal direction. is provided so as to pass through the neck portion 164 in the thickness direction, and the leg portions 168, 168 of the preheating portion 67, which will be described later, are fitted in the concave portion 164a (164a) so as to be slidable in the advancing and retreating directions.

The preheating part 67 has short legs 168, 168 projecting from one side surface of a strip-shaped preheating part body 167 having approximately the same length as the heating block 65, and on both edge sides of the preheating part body 167, respectively. It has a U-shape in plan view. A plurality of (two in this embodiment) holes 168a, 168a are provided on the surfaces of the legs 168, 168 facing the first support plate 71, and elastic members such as springs ( In FIG. 6, one ends of springs 68, 68 are inserted. The other ends of the elastic members 68, 68 are in contact with the first support plate 71, and are biased forward by the elastic members 68, 68 when the residual heat portion 67 retreats.

On the other hand, from the other side surface of the preheating section main body 167 and between the two legs 168, 168, that is, from the substantially central region in the longitudinal direction of the preheating section main body 167, a triangular shape in side cross section is formed and protrudes. An iron portion (protruding portion) 167c, which is in sliding contact with the cylindrical body T, is raised in the tangential direction of the first roller portion 66, and the tip of the iron portion 167c is slightly larger than the first roller portion 66. , so as to come into sliding contact with the center region of the cylindrical body T in the width direction, as will be described later.

The tip of the iron portion 167c protrudes from the outer peripheral surface of the first roller portion 66 by about 1 to 2 mm when the first head portion 61 is not in contact with the second head portion 62. As shown in FIG.

As described above, the outer peripheral surface of the first roller portion 66 is formed as a heating surface for heating the tubular body T (see FIG. 2) by appropriately molding a heat-resistant resin such as silicone rubber or metal. The heat generated by the first heater 63 incorporated in the heating block 65 is conducted through the heating block 65 and applied to the first roller portion 66 from the peripheral surface of the semi-circular concave portion 165a. , the heat is transferred to the residual heat portion 67 and applied to the first roller portion 66 from the inner surface of the iron portion 167a, so that the outer peripheral surface of the first roller portion 66 is heated to a required value. Further, the tip of the iron portion 167a is also heated to a required value by the heat conducted to the residual heat portion 67. As shown in FIG.

In such a first head portion 61, the first head portion 61 and the second head portion 62 clamp the cylindrical body T by the operation of the driving portion 9 as before. At this time, the iron portion of the preheating portion 67 constituting the first head portion 61 is attached to the contact surface 162 of the second head portion 62 . 167c slides in the central region in the width direction of the cylindrical body T from the upstream side in the vertical direction to the downstream side, and subsequently the roller portion 66 of the first head portion 61 slides on the downstream side of the contact surface 162. Continuous rolling contact to the end.

In the central area of the cylindrical body T in the width direction, there is a portion where the butted edge portions of the sheet S (see FIG. 1) are fused as described above, and the number of sheets is While four sheets are laminated, this is not the case in other regions in the width direction of the cylindrical body T, and two sheets are laminated as the number of sheets. Therefore, when the cylindrical body T is laterally sealed by the horizontal sealing machine 6 (see FIG. 1), the central region of the cylindrical body T in the width direction is preheated by the iron part 167c so that the cylindrical body T The entire area in the width direction of the cylindrical body T can be sufficiently fused without affecting the other areas in the width direction of the tubular body T and without inviting defective fusion even with four sheets. .

On the other hand, as before, the surface temperature of the roller portion 66 decreases as the rolling contact distance increases. However, if the temperature is set too high, defects will occur inside or on the surface of the area of the cylindrical body T that is melt-pressed, while if the temperature is set too low, the melt-pressing will be insufficient, resulting in many defective products. end up

However, as described above, the region including the substantially central position of the contact surface 162 of the second head portion 62 and downstream therefrom, that is, the fused region of the cylindrical body T and the rear half side where the roller portion 66 is in rolling contact. is preheated by the iron portion 167c of the preheating portion 67 and the contact surface 162 of the second head portion 62, the set temperature of the roller portion 66 is relatively low compared to when preheating is not performed. Even if it is set to a low value, the melt pressure bonding of the cylindrical body T can be finished well without excessive or insufficient melt pressure bonding.

In addition, in the first embodiment and the second embodiment, the case where the contact surface 162 of the second head portion 62 is substantially flat has been described. However, the present invention is not limited to this, and it is preferable that the contact surface 162 is provided with a plurality of linear projections extending in the width direction of the contact surface 162 . For example, the linear protrusions have a width of about 0.5 mm and a height of about 0.3 mm. Up to about 9 can be provided.

As a result, a plurality of line-segment irregularities extending over the entire width of the cylindrical body T are formed at predetermined intervals in the movement direction of the cylindrical body T in the fused region of the cylindrical body T (see FIG. 1). Therefore, even if the material to be filled is a liquid, the tubular body T can be squeezed more, and the material to be filled can be reliably removed from the fused region of the tubular body T. The occurrence of defects in the fused region of the shaped body T is further prevented.

REFERENCE SIGNS LIST 1 housing 6 horizontal sealing machine 9 drive section 61 first head section 62 second head section 63 first heater (heating section)
64 Support member 69 Second heater 65 Heating block (heating unit)
66 roller portion 67 preheating portion 68 elastic member 75 pressure arm 76 elastic member 77 support shaft 91 first advancing/retreating rod 92 second advancing/retreating rod 93 first cam 94 second cam 164 neck portion 164a concave portion 165 head portion 167 preheating portion main body 167a preheating surface 167c iron part (protruding part)
168 leg portion 169 stepped portion T cylindrical body (material to be sealed)
H packaging bag

Claims (10)

A first head portion and a second head portion are arranged so as to face each other across a cylindrical material to be sealed which is transported in the vertical direction, and a driving portion for moving the two head portions forward and backward in a direction of approaching and separating from each other. In addition, the first head portion is provided with a roller portion that is brought into rolling contact with the second head portion, and the second head portion includes a heater that heats the second head portion. is moved forward to sandwich the material to be sealed, and then the first head portion is swung in the vertical direction to melt and crimp the material to be sealed, wherein
A horizontal sealing machine, wherein the first head portion is provided with a preheating portion for preheating the material to be sealed and a heating portion for heating the preheating portion prior to rolling contact of the roller portion. 2. The preheating part according to claim 1, wherein the preheating part comprises a preheating part body heated by the heating part, and the preheating part body is configured to preheat the entire widthwise region of the material to be sealed. Horizontal sealing machine. The preheating section includes a preheating section main body heated by the heating section, and a protruding portion protruding from the preheating section main body. 2. The transverse sealing machine of claim 1, wherein the transverse sealing machine is constructed to: The first head portion is configured to swing from the upstream side to the downstream side in the vertical direction,
4. Any one of claims 1 to 3, wherein the roller portion is the first head portion and is arranged on the upstream side in the vertical direction, and the preheating portion is the first head portion and is arranged on the downstream side in the vertical direction. The horizontal sealing machine described in . The preheating section includes a preheating section main body that abuts on the second head section, and a leg that extends from the preheating section main body to the opposite side of the second head section,
In addition, the heating unit comprises a heating block provided with a recess in which the legs of the preheating unit are fitted in the bottom thereof, and a heater built into the heating block,
The legs of the preheating part are fitted in the recesses of the heating block so as to move forward and backward,
A support member extends from the bottom of the heating block to support the preheating section main body so as to move back and forth,
comprising an elastic member that biases the preheat section toward the second head section;
Further, a stepped portion is provided at the bottom of the preheating section main body at a predetermined distance from the abutment surface to be brought into contact with the second head portion, and the support member is engaged with the stepped portion of the preheating section main body. When the engaging portion of the supporting member is engaged with the stepped portion of the preheating section main body, the contact surface of the preheating section main body protrudes from the roller section toward the second head section by a predetermined dimension. 5. A transverse sealing machine according to claim 4, adapted to: 6. The horizontal sealing machine according to claim 5, wherein said heating block is provided with a semi-cylindrical recess, and said roller portion is loosely fitted in said semi-cylindrical recess. 6. The preheating section body according to claim 5, wherein the ceiling of the preheating section body is arranged so as to face the peripheral surface of the roller section, and the ceiling of the preheating section body is formed in an arc shape following the semi-cylindrical recess. Horizontal sealing machine. 8. The horizontal sealing machine according to any one of claims 4 to 7, wherein a receiving portion for receiving the residual heat portion is vertically provided on the bottom portion of the second head portion. The receiving surface of the receiving portion for receiving the residual heat portion is tapered such that the distance from the surface of the second head portion with which the first head portion abuts becomes longer toward the downstream side in the vertical direction. The horizontal sealing machine according to claim 8. A molding plate for continuously joining both edge portions of a belt-shaped resin sheet to form a cylindrical shape, and a predetermined portion of both edge portions of the sheet molded by the molding plate are melted to obtain the sheet. a fusing machine for crimping the melted portions of each other, feeding means for feeding the tubular sealed material produced by the fusing machine downstream, filling means for filling the material to be sealed into the material to be sealed, and and a horizontal sealing machine that fuses the material to be sealed over the entire width, wherein the cylinder is sealed over the entire width at the downstream and upstream portions of the portion of the material to be sealed filled with the material to be sealed. In a filling and packaging device configured to be cut from a shaped body,
A filling and packaging apparatus comprising the horizontal sealing machine according to any one of claims 1 to 9.

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