JPH0585408B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a sealing device for welding a sealing film formed by punching out a tape-like film to the mouth of a container.

BACKGROUND TECHNOLOGY As shown in FIG. 24, an apparatus for filling a cup with food or the like and then sealing the mouth of the cup with a film is as shown in FIG.
3 to form a container 304, and the filling machine 3
After filling food 305a and the like with 05, a film 306 serving as a lid is placed over the top, sealed with a sealing part 307, punched into a predetermined shape with a punching part 308, and taken out and placed on a conveyor 309.

Problems to be Solved by the Invention However, according to the above-mentioned conventional configuration, all operations are intermittent operations due to the film welding and punching operations at the seal portion, making it difficult to increase the speed.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a sealing device that can continuously seal the mouth of a container and can be operated at high speed.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a film feeding device that feeds out a roll-shaped film intermittently, and when the film feeding device feeds out a strip-shaped film, when the film is stopped. A rotor that can continuously rotate around a vertical axis and its outer periphery are equipped with a plurality of press shearing devices that lift and lower punches with air holes for adsorption and separation formed on the film contact surface to form punched and sealing films. a film welding device having a plurality of sealing head devices disposed in the sealing head device, the sealing head device having a suction pipe capable of adsorbing and holding a sealing film, and a container for holding a container for welding the sealing film; A holding part and a film welding part for press-welding a sealing film to the opening of the container are provided, and a film is moved around the vertical axis between the shearing position of the press shearing device and the moving path of the film holding part of the sealing head device. A transfer table is provided which is equipped with a plurality of film holders that rotate intermittently to receive the sealing film from the press shearing device during the stop and pass it to the film holder of the sealing head device during the rotation, It is formed into a flat shape and has pores for adsorption and separation of the sealing film.

Operation In the above configuration, the sealing film punched by lowering the punch by intermittent operation is held on the film contacting surface by the air holes in the film contacting surface, and the film holding base of the transfer table is stopped. The film is adsorbed onto the receiving surface of the film via the pores, and is delivered from the film holder to the suction pipe of the continuously rotating film holder while the film holder is rotating.
As a result, the sealing film punched out in an intermittent operation can be accurately and smoothly delivered to the seal head device of the continuous operation film welding device via the transfer table that rotates intermittently around the vertical axis. Since the sealing head device welds the sealing film to the container held by the film holder, it is possible to perform sealing in a continuous operation, making it possible to increase the speed.

Embodiment Hereinafter, a sealing device which is an embodiment of the present invention will be described.
This will be explained based on FIGS. 24 to 24.

As shown in FIGS. 4a, b, and c, this sealing device includes, for example, a resin drip bottle (hereinafter referred to as a container) 1 having an oval shape in plan view, into which a resin liquid stopper 2 is fitted. A substantially elliptical sealing film 4 made of resin and having a handle 4a formed thereon is welded to the upper surface of the opening 3 by pressure welding. This container 1 has a liquid stopper member 2 formed in a cylindrical shape and is closed by a rubber material 2a inside the liquid stopper member 2, and a seal welded to the upper opening 2b of the liquid stopper member 2. The sealing film 4 is used to prevent contamination of the surface of the rubber material 2a, and when used, after peeling off the sealing film 4, a syringe needle or the like is inserted into the rubber material 2a to pour out the drug solution in the container 1. . The sealing film 4 is welded to the periphery of the upper opening 2c of the cylindrical portion of the resin liquid stopper member 2 and its peripheral edge 2c,
The handle portion 4a of the sealing film 4 is always attached to the container 1 so as to face in a fixed direction, that is, in the longitudinal direction of the container 1 as shown in FIG. 4c. This is to prevent the handles 4a of adjacent sealing films 4 from coming into contact with each other and peeling off of the sealing films 4 when a plurality of containers 1 are lined up and boxed.

First, the outline of this sealing device will be explained with reference to FIGS. 1 to 3.

A film punching device 8 in which a film strip 5 wound into a roll is intermittently fed out by a film feeding device 6, and the fed out strip film 5 is punched into a sealing film 4 of a predetermined shape by a press shearing device 7. will be placed. The sealing film 4 punched by the film punching device 8 is
The film is transferred to a film welding device 10 by a transfer table 9 that rotates intermittently around a vertical axis.
As shown in FIG. 3, this film welding device 10 has film holding sections 13 of a seal head device 12 disposed at predetermined intervals around the outer periphery of a rotor 11 that continuously rotates around a vertical axis 122. While holding the sealing film 4 on the transfer table 9, the container holding part 14 moves the sealing film 4 from the inlet conveyor 15 to the inlet star wheel 1.
The sealing film 4 is continuously welded to the opening 3 of the container 1 by a film welding section 17 while the sealing head device 12 is rotating. The container 1 is then discharged onto an exit conveyor 19 by an exit starwheel 18. 20 are two redirect levers located near the exit star wheel,
A photoelectric detection device (not shown) confirms the presence or absence of the sealing film 4 on the sealed container 1 and the seal position, and if the container is defective, the redirect lever 20 is rotated by a signal from the photoelectric detection device to remove the defective container. 1 to the reject table 21. Two sets of the film punching device 8 and the transfer table 9 are provided for one film welding device 10 due to the speed and welding efficiency of the film welding device 10. The film welding apparatus 10 is also provided with an emergency welding stop device 221 that prevents excessive welding of the sealing film 4 during pressure welding during an emergency stop.

The details will be explained below.

The film feeding device 6 of the film punching device 8 has a feeding reel 31 as shown in FIG.
The strip-shaped film wound on the
2, the strip-shaped film 5 is introduced between a continuous feeding roll 33 and a presser roll 34 which are continuously rotated, and is fed out from the feeding reel 31 at a constant speed. The film is introduced between a constant pitch feed roll 38 and a presser roll 39 which are guided by a second guide roll 37 and rotated intermittently, and then wound onto a take-up reel 41 which is rotated by a wind-up motor 40. The step roll 35 is rotatably attached to the free end of an arm 44 that is supported to be swingable around a pin 42 and is biased to rotate in the direction of arrow A by a spring 43, and is fed at a constant pitch. The slack of the film strip 5 due to the difference between the amount of film drawn out intermittently by the roll 38 and the amount of film fed out continuously by the continuous feed roll 33 is absorbed, and the intermittent film feeding is made smooth. In addition, it is constructed so that the band-shaped film 5 is not adversely affected by impact or the like due to the tensile force.

A press shearing device 7 is disposed between the first guide roll group 36 and the second guide roll 37. As shown in FIGS. 6 and 7, in this press shearing device 7, a punch holder 48 having a punch 47 is disposed on a pair of guide pins 46 erected on a base 45 so as to be movable up and down. A die 49 corresponding to the punch 47 is provided. The strip-shaped film 5 is placed on the die 49 and introduced into a film introduction hole 50b of a film holder 50 having an insertion hole 50a for the punch 47. Further, an air hole 51 is formed in the center of the punch 47 and opens in the vertical direction to the lower surface, which is the film contact surface of the punch 47. 55. The switching valves 54, 55 are operated via, for example, limit switches 56, 57, which are interlocked with the rise and fall of the punch 47, and are operated from the top dead center a of the punch 47 as shown in the timing chart of FIG. During the descent from the slightly lowered position b to the bottom dead center c, the vacuum pipe 52 is connected, and the band-shaped film 5 and the sealing film 4 punched into it are attracted to the lower surface of the punch 47, and from the bottom dead center c to the slightly raised position d. In the ascending section, the sealing film 4 is connected to the blow pipe 53, separated from the lower surface of the punch 47, and delivered to the transfer table 9.

As shown in FIG. 5, the fixed pitch feed roll 38 of the film feeding device 6 and the punch 47 of the press shearing device 7 are driven by a drive shaft 59 which is rotationally driven via a belt 58 by the driving source of the sealing device.
It will be more linked. That is, a belt pulley 61 around which a belt 58 is wound is attached to a drive shaft 59 rotatably supported by a bearing via a cam clutch 60, and a solenoid 62 operates a cam clutch 60 via a lever 63 to rotate the belt pulley. 61 and the drive shaft 59 can be connected and detached. A feed crank mechanism 66 consisting of a crank plate 64 and a connecting rod 65 is provided at one end of the drive shaft 59. It is rotatably connected to the free end of the movable lever 68 and converts the rotation of the drive shaft 59 into reciprocating rocking of the rocking lever 68 within a certain range.
A ratchet mechanism 69 consisting of a pawl and a ratchet wheel (not shown) is interposed between the rotating shaft 67 and the fixed pitch roll 38, and converts the swinging of the swing lever 68 into intermittent rotation of the fixed pitch roll 38. .

On the other hand, a punching crank mechanism 72 consisting of a crank plate 70 and a continuous rod 71 is interposed at the other end of the drive shaft 59, and the tip of the continuous rod 71 is rotated via a pin 73 to the punch holder 48 of the press shearing device 7. They are movably connected and convert rotation of the drive shaft 59 into reciprocating movement of the punch 47. Therefore, since the constant pitch feed roll 38 and the punch 47 are linked to the same drive shaft 59, the timing of each operation can be set reliably and accurately with an extremely simple structure. The above timing is as shown in FIG. 9a and b, when the drive shaft 59
The rotation of the swing lever 68 causes the swing lever 68 to reciprocate, and when the swinging lever 68 first moves from the upper limit position to the lower limit position in the direction of arrow B, the swing shaft 67 and the fixed pitch feed roll 38 are interlocked by the ratchet mechanism 69. The fixed pitch feed roll 38 rotates by a predetermined angle α to feed the strip film 5 by a certain amount. Further, when returning to swing in the direction of arrow C from the lower limit position to the upper limit position, the rotation shaft 67 and the constant pitch feed roll 38 are separated by the ratchet mechanism 69, and the constant pitch feed roll 38
is stopped, and the feeding of the strip film 5 is stopped.
This is illustrated by the timing behavior curve in Figure 9b. The punch 47 is driven so as to perform punching when the strip tape 5 is stopped during the return shown in this timing curve. That is, the punch 47 reciprocates from the top dead center a to the bottom dead center c through the shearing device that punches the strip film 5 on the die 49, but the time e during which the punch 47 is located below the shearing position is As shown in FIG. 8b, it may be set within the return time f. This can be done very easily by adjusting the respective feed crank mechanisms 66, 72, and reliable and accurate interlocking can be expected.

As shown in FIGS. 10 and 11, the transfer table 9 that transfers the sealing film 4 formed by the press shearing device 7 to the sealing head device 12 of the sealing film welding device 10 is
A rotary shaft 83 is rotatably supported around a vertical axis 80 via a bearing on a boss 82 extending vertically through the substrate 81. A rotary table 84 is fixed to the upper part of the rotary shaft 83, and a rotary table 84 is fixed to the lower part A driven gear 87 that meshes with a driving gear 86 of a cam unit 85 that can be driven intermittently is attached to the cam unit 85 . On the outer periphery of the rotary table 83, film holding stands 89 with flat receiving surfaces for adsorbing, for example, six sealing films, are arranged at regular intervals. A support shaft 90 suspended from the rotary table is rotatably supported via a bearing on the tip end of a guided member 91 arranged in the radial direction of the rotary table, and a base end of the guided member 91 is attached to the rotary table 84. It is arranged to be movable in the radial direction of the rotary table 84 while being guided by a guide body 92 that is fixed in the radial direction. A track cam follower 93 is attached to the lower part of the support shaft 90, and a rotation cam follower 95 is attached via an arm 94. Said boss 8
A fixed table 96 is fixed to 2, and a holding table guide portion 97 is provided on the fixed table 96 along the rotation path A of the film holding table 89 via a plurality of supports 97a. This holding table guide part 97 is
It consists of a pair of track cam plates 98a forming a track cam groove 98, a pair of rotation cam plates 99a forming a rotation cam groove 99, and a support member 100 for each of the cam plates 98a and 99a. The cam follower 93 for the rotation is engaged with the cam groove 98 for the track to move the film holder 89 in the radial direction of the rotary table 84, and the cam follower 95 for rotation is engaged with the cam groove 99 for rotation to hold the film. Platform 8
9 is configured to be rotatable around a support shaft 90. The rotation path A of the film holder 89 due to the rotation of the rotary table 84 is approximately along the circumference passing through the film receiving position B below the die 49 of the press shearing device 7, and also along the circumference of the film receiving position B below the die 49 of the press shearing device 7. A film transfer section (2) is formed which overlaps a part of the rotation path (C) of No. 12, and this film transfer section (2) is designed to align the film holding table rotation path (A) with the seal head rotation path (C).
The track cam groove 98 is formed along the seal head rotation path as shown in FIG. Also, punch 4 at the film receiving position B.
The sealing film 5 punched and supplied by the sealing film 7 is punched and placed, for example, on a film holding table 89 so that the long diameter direction of the sealing film 4 is tangential to the support table rotation path A. It is transported to the transfer section 2. As shown in FIG. 12, the rotation cam groove 99 moves the rotation cam follower 95 so that the long diameter direction of the sealing film 4 faces in the tangential direction of the sealing head rotation path C in the film transfer section 2. Thus, the film holding table 89 is rotated via the arm 94 and the support shaft 90.

In addition, for example, two air holes 101 are formed on the upper surface of each of the film holding stands 89 in order to adsorb and hold the sealing film 4 and to discharge and separate it.A vacuum pipe 102 and a blow pipe 103 are connected to these air holes 102. , each pipe 10
Reference numerals 2 and 103 denote a vacuum valve 104 and a blow valve 10, which are arranged for each film holding table 89 on the rotary table 84 below the guide body 92, respectively.
5. Each of the vacuum valves 10
4 is connected to a vacuum hole 106 formed on the axis of the rotating shaft 83, and this vacuum hole 106 is connected to a main vacuum pipe 108 via a rotary joint 107 provided at the lower end. Further, each blow valve 105 is connected to a branch pipe 109 arranged at the upper end of the rotating shaft 83.
9 is connected to the main blow pipe 1 via a rotary joint 110.
11 and on the fixed table 96, the rotation path E of each valve 104, 105, the roll 104b of the operating rod 104a of the vacuum valve 104 and the operating rod 1 of the blow valve 105 are shown.
A vacuum cam 112 and an air blow cam 113 are provided which respectively act on the roll 105b of 05a. That is, the vacuum cam 112
is the rotation path of the vacuum valve 104,
A film holding table 89 is disposed in an area corresponding to the position from the front of the film receiving position B to the front position of the film transfer section 2,
The sealing film 4 is suctioned and held by acting on the operating rod 104a to suck air from the pores 101. In addition, the air blow cam 113 is attached to the film holding table 89 in the rotation path of the blow valve 105.
is disposed within the film transfer section 2, acts on the actuating rod 105a of the blow valve 105 to discharge air from the pores 101, and seals the sealing film 4.
is passed to the seal head device 12.

The rotary table 84 is intermittently rotated in the direction of arrow D by a cam unit 85, and is at a film receiving position where the sealing film 4 is delivered from the press shearing device 7 to the film holding table 89, as shown by the solid line in FIG. Stop. The film holding table 89 from the front to the rear of the film transfer section 2 is accelerated in the section from the stop position g to the confluence h of the seal head rotation path C, and the film transfer section 89 from the confluence h to the branch point i is accelerated. At the transfer section D, it rotates at the same circumferential speed as the seal head device 12, and in the section from the branch point i to the next stop position j, it is set to be decelerated and stopped.

Next, the film welding device will be explained.

As shown in FIG. 3, on the frame 121,
A column-shaped rotor 11 having a central axis 123 on a vertical axis 122 is disposed, and this rotor 11
A ring gear 127 fixed to the lower surface of the rotor 11 is rotatably supported by an annular guide body 128 disposed on the frame 121 via a ball bearing 129. A rotary transformer 125 attached to the frame 121 via a support member 126 is connected to the lower end of the central shaft 123. On the base 130 below the frame 121 is a drive motor 1 with a reduction gear that continuously rotates the rotor 11.
31 is arranged, and a drive gear 132 attached to the output shaft passes through the frame 121 and is rotatably supported by the lower intermediate gear 134 of the intermediate shaft 133.
The upper intermediate gear 135 of the intermediate shaft 133 meshes with the ring gear 127, and the rotor 11
As shown in the figure, it is rotated in the direction of arrow F. Also,
This motor 131 is connected to the inlet and outlet star wheels 1 through an optional interlocking mechanism (not shown).
6 and 18 are rotated.

Seal head devices 12 are disposed at predetermined intervals on the outer circumference of the rotor 11, and these seal head devices 12, as shown in FIG. 3 and FIG. 17.

First, the container holding part 14 will be explained with reference to FIGS. 13 to 15. A pair of left and right guide shafts 137 are rotatably suspended from a column top plate 136 forming the rotor 11, and a lower ring plate 138 along the outer circumference of the rotor 11 is supported at the bottom of the guide shaft 137 via a bearing 140. Ru. A linear motion bearing 14 is provided between both guide shafts 137.
1, an elevating body 142 is arranged to be able to rise and fall freely,
In addition, the base end of each guide shaft 137 is fitted onto the outside of the guide shaft 137 so as to be able to rise and fall freely through a linear motion bearing 143, and a pair of bottle chucks 144 that are rotatably connected to the upper surface of the elevating body 142 are attached.
will be placed. These bottle chucks 144 are
As shown in FIG. 15, a recess 144a into which the neck 1b of the container 1 can fit is formed at the opposite position of the tip, and the top surface 144b of the tip is used to hold the liquid stopper 2 inserted into the container 1. It is formed so that it can be locked on the lower surface of the lower end flange 2d. A bottle holder 14 is provided on the upper surface of the lower ring plate 138 and protrudes outward from between the guide shafts 137 via a support member 145.
6 is provided protrudingly, and the outer surface of this bottle holder 146 has an engaging recess 1 that can be engaged with the lower side surface of the container 1.
46a is formed. In addition, the lower ring plate 138
A bottle support plate 147 is provided on the outer upper surface of the container 1 and extends along the lower ring plate 138 that can support the bottom of the container 1.
, the bottle support plate 147 and the bottle holder 146
and hold it in the bottle chuck 144. Sector-shaped gears 148A and 148B are attached to the pair of guide shafts 137 that protrude downward from the lower ring plate 139, respectively, and are keyed so as to mesh with each other. A tension spring 150 is connected to rotate and bias the bottle chuck 144 in the direction of arrow E, which is the closing direction of the bottle chuck 144, and a cam follower 152 for opening and closing the bottle chuck 144 is provided on one guide shaft 149 via a swing arm 151. This opening/closing cam follower 152 is connected to the bottle chuck 144 in the seal head rotation path.
The bottle chuck 144 is opened by engaging with an opening/closing cam plate 153 disposed along the opening section. A cam follower 154 for lifting and lowering the bottle is provided on the inner surface of the lifting body 142, and the cam follower 154 for lifting and lowering the bottle engages with a cam plate 155 for lifting and lowering the bottle disposed along the seal head rotation path. The bottle chuck 144 is raised and lowered to raise and lower the container 1.

Next, the film holder 13 is
This will be explained with reference to Figure 4. A frame 160 with open inner and outer surfaces is erected on the column upper plate 136, and a vertical shaft 163 is erected between the upper plate 161 and the lower plate 162. This vertical axis 16
Linear motion bearing 164 is installed at the top of 3.
An upper housing 165 is fitted onto the outside of the upper housing 165 so as to be able to rise and lower freely, and a pipe holder 167 is attached to the outside of the upper housing 165 in which a vertical through hole 166 is formed. The upper part of a suction pipe 168 capable of suctioning the sealing film 4 is fitted inside and supported so as to be movable up and down within a predetermined range. The upper end of this suction pipe 168 is connected to a vacuum valve 169 disposed on the top plate 161 of the frame body 160 via a connecting pipe, and this vacuum valve 169 is connected to the central shaft 1.
23 is connected to a suction pump (not shown) via a rotary joint 170 disposed at the upper end. This vacuum valve 169 has an operating rod 169b having a roller 169a at the tip, and a suction cam plate 171 disposed at a predetermined position on the seal head rotation path acts on the roller 169a of the operating rod 169b, causing the suction pipe Seal film 4 by 168
The adsorption effect is turned on and off. A regulation hole 172 passing through the upper housing 165 in the vertical direction is formed in the middle part of the upper housing 165, and a bolt 173 hanging from the top plate 161 of the frame 160 is movably inserted into the regulation hole 172. The head 173a at the lower end of the bolt 173 is connected to the upper housing 1.
65 and restricts the lower limit of the upper housing 165. And the upper housing 16
A cam follower 174 for lifting and lowering the suction pipe 168 is provided inside the suction pipe 168. The suction pipe 168 is moved up and down at a predetermined rotational position by the action of the plate 175. Furthermore, the suction pipe 168 is supported by a locking part 176 at the upper end and a locking ring 177 at the middle part of the suction pipe 168, and a compression spring 17 is fitted onto the suction pipe 168.
When the pipe holder 167 is lowered to its lower limit, the compression spring 178 urges the suction pipe 168 downward to bring the sealing film 4 into close contact with the mouth 3 of the container 1.

Next, the film welding portion 17 will be explained with reference to FIGS. 13, 14, and 16 to 18. A lower housing 182 is fitted on the lower part of the vertical shaft 163 via a linear motion bearing 181 so as to be able to move up and down, and a heater holder 183 that is movably fitted on the suction pipe 168 is provided on the outside of the lower housing 182. A heater block 185 is attached to the lower part of the heater holder 183 via a spherical bearing 184.
That is, the heater block 185 is formed in a cylindrical shape with a spherical seat 184a on the inner surface of the lower end, and has an insertion hole 186 for the suction pipe 168 on the upper surface portion 183a. A spherical body 184b with a heater block 185 fixed to the lower surface thereof is slidably fitted and supported on the spherical seat 184a, and an insertion hole 187 for the suction pipe 168 is provided at the center of the spherical body 184b and the heater block 185. 18
8 are formed respectively. Furthermore, the spherical body 184b is located within the space 189 of the heater holder 183.
A balance coil spring 190 that fits around the suction pipe 168 is interposed between the upper surface and the upper part of the heater holder, and urges the pressure contact surface of the lower end of the heater block 185 to be a horizontal surface. A heater block 1 is provided on the inner protrusion 191 of the lower housing 182 and is installed upright on the column top plate 136.
The cylinder rod 192a of the lifting air cylinder device 192 of 85 is connected to the lower housing 18.
2 and the heater holder 183, the heater block 185 is raised and lowered. An air supply pipe is connected to this air cylinder device 192 for lifting and lowering through a master valve 193, and this master valve 193 has a pilot valve 195 for lowering and a pilot valve 196 for raising which are arranged on the lower surface of the lower ring plate 138. Operating rods 195b, 1 are connected to each pilot valve 195, 196 and have rollers 195a, 196b at their tips.
96b is a descending and ascending cam plate 197, 1 disposed at a predetermined position on the seal head rotation path C.
98 and is engaged with the air cylinder device 192 for lifting and lowering.
is driven.

As shown in FIGS. 16 to 18, the heater block 185 includes a heater 199 and a thermocouple 200 therein. an upper ring 2 disposed along the circumference of the rotor 11 via a support 201;
The heater block 185 is connected to the temperature controller 203 on the 02 and is configured to constantly heat the heater block 185 to a temperature at which the sealing film 4 can be welded. Around the insertion hole 188 at the lower part of the heater block 185 is an annular pressure contact portion 2 whose lower end surface is in pressure contact with the sealing film 4.
04 is formed in a protruding manner, and around this annular pressure contact portion 204, a plurality of (six in this embodiment) subheater blocks 205 are arranged in the circumferential direction.
This sub-heater block 205 has a cylindrical engagement part 206 formed along the circumferential direction at the upper end thereof, and this engagement part 206 is formed at the outer periphery of the upper end of the annular pressure contact part 204, and is an annular receiving groove having a semicircular cross section. The sub heater block 205 is slidably engaged with the sub heater block 207 and is slidable around a tangential line along the circumferential direction.
has a mounting hole 2 radially penetrated through its center.
A mounting bolt 209 implanted on the outer circumferential surface of the annular pressure contact portion 204 is loosely fitted into 08, and a load spring 21 is fitted onto the mounting bolt 209 between the head 209a of the mounting bolt and the subheater block 209.
0, the subheater block 205 is biased toward the annular pressure contact portion 204, and the lower end of the subheater block 205 projects downward from the annular pressure contact portion 204, and a tapered pressure contact surface 211 that widens downward is formed on the inner surface. Even if the opening 3 of the container 1 is misaligned due to poor centering, the subheater block 205 swings outward as shown in FIG. 18, and the peripheral edge around the annular pressure welding part 204 can be reliably welded. In addition,
Engaging portion 206 of the sub-heater block 205
Since it has an arcuate shape in plan view, the shape of the annular receiving groove 207 is designed to be somewhat larger to allow for rocking. The subheater block 205 is heated by heat conduction from the contact surface with the heater block 185.

Here, the operation of the main members in the film welding apparatus 10 will be explained with reference to a timing chart in FIG. 19.

When the container 1 is supplied from the inlet star wheel 18 during one rotation of the seal head device 12 from the outlet star wheel 18, the bottle chuck 144 is first moved to close.
Hold the neck 1b of the container 1 in the recess 144a of 4,
Next, the bottle chuck 144 is raised to engage the lower surface of the flange 2d of the liquid stopper member 2 on the upper surface of the bottle chuck 144, and the container 1 is slightly raised from the bottle support plate 147. (About 2 to 3 mm) This is because the container 1 is made of resin and is elastic, and the bottom shape of the container 1 is not a planar shape that can be stably supported. This prevents the pressure contact force by the heater block 185 from working sufficiently. This is to do so. Furthermore, the suction pipe 168 that has adsorbed the sealing film 4 from the transfer table 9 is lowered to bring the sealing film 4 into close contact with the opening 3 of the container 1, and then the heater block 185 is lowered to transfer the sealing film 4 to the container. Welded to the opening 3 of 1. After this pressure welding section has passed, first the heater block 185 is raised, then the suction pipe 168 is raised, and the bottle chuck 144 is lowered to the receiving position and opens to transfer the sealed container 1 to the outlet star wheel 18. The reason why the bottle chuck 144 is further lowered depends on its positional relationship with the transfer table 9.
Also, at this transfer table 9 position, the suction pipe 168 is lowered somewhat and the film holding table 89 is moved downward.
Receive the upper sealing film 4.

At the time of emergency stop, the film welding device 10 has the following functions:
An emergency welding stop device 221 is provided which lifts the heater block 185 that is welding the sealing film 4 under pressure to stop the welding and prevent seal failure due to excessive welding. This will be explained with reference to FIGS. 20 to 23. Heater block 18 in film welding part 17
As shown in FIG. 20, as shown in FIG. A plate 198 is disposed and is configured to act on each operating rod 195b, 196b of a descending pilot valve 195 and an ascending pilot valve 196 disposed above and below the lower portion of the lower ring plate 139. That is, when the rotor 11 is rotated in the direction of arrow F and the lowering cam plate 197 acts on the roller 195a of the operating rod 195b of the lowering pilot valve 195, the master valve 1
93, the cylinder rod 192a of the lifting air cylinder device 192 is shortened, the heater block 185 is lowered, and the sealing film 4 is pressure welded to the opening 3 of the container 1 in the pressure welding section. When the lifting cam plate 198 acts on the roller 195a of the operating rod 195b of the lifting pilot valve 195, the operating rod 192a of the lifting air cylinder device 192 is extended via the master valve 193, and the heater block 185 is raised. Nu is the rising section.

As shown in FIG. 20, the emergency welding stop device 221 is disposed outside the rotation path of the pressure welding section of the ascending pilot valve 196, and is arranged in a plurality (6 in the embodiment) in the circumferential direction. emergency cam plates 222a to 222f, which are divided into 222
The emergency cam plate ejecting/retracting device 223 is provided, which causes the operating rods 196b of the ascending pilot valve 196 to act by protruding f. The operating surfaces of the emergency cam plates 222a to 222f are formed into arcuate surfaces along the seal head rotation path C, and the emergency cam plates 222 extend so as to overlap below the lowering cam plate 197. These emergency cam plate egress and withdrawal devices 223 consist of air cylinder devices 224, and as shown in FIG.
The electromagnetic switching valves 226 installed in the 24 operating air pipes 225 are each connected to and controlled by a control device 227 having a built-in timer. Further, the descending cam plate 197 is also connected to the ascending pilot valve 196.
A descending cam plate evacuation device 228 is configured to be freely retractable between an active position and a non-active position, and has a cylinder device 227 for advancing and retracting the descending cam plate 197, and a switching valve 229 thereof is provided. That is,
During normal operation when the descending cam plate 197 protrudes and acts on the ascending pilot valve 196, when an emergency stop is made due to some kind of failure, the descending cam plate 1 first
97 is retracted to the non-operating position by the egress and egress device 228, and the emergency cam plates 222a to 222f are moved to each egress and egress device 22.
3, the exit side (ascending cam plate 198 side), that is, the emergency cam plate 222f, which takes a long time to press and weld the sealing film 4 by the heater block 185.
The pilot valves 19 for lifting are successively projected from the
Heater block 1 after the proper pressure welding time by each heater block 185 has passed.
85 are raised and separated one after another. Then, after the last emergency cam plate 222a on the entrance side is projected to the operating position, all the emergency cam plates 222 are retracted to the non-operating position. Due to the above action, all the seals in the pressure welded section are completed. At the start of work, when the sealing film 4 is detected by a detection device (not shown) on the suction pipe 168 of the sealing head device 12, the lowering cam plate 197 is projected to the operating position and welding is started.

Next, the operation of this sealing device will be explained.

In the film punching device 8, the strip-shaped film 5 is continuously fed out from the feeding reel 31 of the film feeding device 6 by the continuous feeding roll 33.
is stored by the step roll 35, and is intermittently sent from the step roll 35 to the press shearing device 7 by a constant pitch feed roll 38. In this press shearing device 7, when the strip-shaped film 5 fed into the film holder 50 is stopped,
A drive shaft 59 drives the constant pitch feed roll 38 via a ratchet mechanism 69 and a feed crank mechanism 66, and a punch 47 is lowered and punched via a punching crank mechanism 72, thereby forming the sealing film 4. This sealing film 4 is adsorbed and held on the film holder 89 of the transfer table 9 by the pores 101. Then, in the film transfer section 2 which is rotated synchronously with the sealing head device 12, the sealing film 4 is
The film is blown with air from 01 and separated from the film holding table 89, and is held by suction at the lower end of the suction pipe 168. The seal head device 12 holding the sealing film 4 is rotated to receive the container 1 from the inlet star wheel 16 by means of the bottle chuck 144 and the bottle holder 146 of the container holder 14 and the bottle support plate 147. Then, the bottle chuck 144 is raised to raise the container 1, and the suction pipe 168 is lowered to attach the sealing film 4 to the opening 3 of the container 1.
Close contact. Furthermore, heater block 185
is lowered, and the sealing film 4 is pressure-welded to the opening 3 of the container 1 by the annular pressure welding part 204 and the subheater block 205. More precisely, the periphery of the upper surface opening 2b of the liquid stopper member 2 and its peripheral edge 2c are welded under pressure. After a predetermined period of time has elapsed, the suction pipe 168 and heater block 185 are raised, and the container 1 sealed by the outlet star wheel 18 is discharged onto the outlet conveyor 19.

According to the above embodiment, two transfer tables 9 are provided for one film welding device, and the film holding table 8 of the transfer table 9 is
9 is superimposed in a predetermined film transfer section 2 of the rotation path C of the sealing head device 12, and the transfer table 9, which holds the sealing film 4 that has been punched intermittently and rotates intermittently, transfers the film. Seal head device 1 that rotates continuously in section 2
By moving synchronously at the same speed as 2, the sealing film 4 can be reliably delivered to the film holding part 13 of the sealing head device 12, and the film welding device 10 can be arranged around the rotor 11. The plurality of sealing head devices 12 provided allow successive sealing of containers during rotation, thereby increasing speed.

Effects of the Invention As described above, according to the present invention, a sealing film punched in an intermittent operation is transferred accurately and smoothly to a sealing head of a continuously operating film welding device by a transfer table that intermittently rotates around a vertical axis. This allows for a smooth transition from the intermittent operation of press shearing equipment, which has a limit to speeding up, to the continuous operation of film welding equipment, which can increase speed, and improves the welding action of sealing films. It can be significantly faster.

[Brief explanation of the drawing]

1 to 33 show a sealing device according to an embodiment of the present invention, and FIG. 1 is an overall plan view of the sealing device;
Fig. 2 is an overall front view of the sealing device, Fig. 3 is a partial side sectional view showing the film welding device, Fig. 4a,
b and c are respectively an exploded perspective view of the container and the sealing film, an enlarged perspective view showing the sealed state, and a plan view showing the sealed state, FIG. 5 is a perspective view showing the film feeding device, and FIGS. 6 and 7 are A side sectional view and a plan view showing the press shearing device, FIG. 8 is a timing chart showing the drive of the press shearing device, and FIGS. 9a and b are schematic diagrams showing the fixed pitch feed roll and the press shearing device and their relationship. FIG. 10 is a plan view showing the transfer table, FIG. 11 is a side sectional view showing the transfer table, FIG. 12 is a partial plan view showing the rotation cam groove of the transfer table, and FIG. Figures 13 and 14 are side sectional views and front views showing the seal head device, Figure 15 is a plan sectional view showing the container holding portion of the seal head device, and Figures 16 and 17 are partially cutaway views showing the heater block. A side view and a bottom view, Fig. 18 is a partial sectional view showing how the heater block is used, Fig. 1
Fig. 9 is a timing chart of the seal head device, Fig. 20 is a schematic plan view showing the welding emergency stop device, Figs. 21 and 22 are a plan view of the groove shown in Fig. 20 and its side view, and Fig. 23 is a schematic plan view showing the welding emergency stop device. FIG. 24, a piping system diagram of the welding emergency stop device, is a schematic perspective view showing the steps of a conventional sealing device. DESCRIPTION OF SYMBOLS 1... Container, 3... Mouth part, 4... Seal film, 5... Strip film, 6... Film feeding device, 7... Press shearing device, 8... Film punching device, 9... Transfer table, 1
0...Film welding device, 11...Rotor, 1
2...Seal head device, 13...Film holding part, 14...Container holding part, 17...Film welding part, 38...Constant pitch feed roll, 47...Punch, 49...Dice, 51...Air hole , 59...
Drive shaft, 66...Feed crank mechanism, 69...Ratchet mechanism, 72...Punching crank mechanism, 8
9...Film holding stand, 98...Race cam groove,
101...Stomata, 144...Bottle chuck, 1
68... Suction pipe, 183... Heater holder, 185... Heater block, A... Film holding table rotation path, C... Seal head rotation path, D... Film transfer section, R... Pressure welding section.

Claims (1)

[Claims] 1. A film feeding device is provided that feeds out a roll-shaped film intermittently, and when the strip-shaped film fed out by the film feeding device is stopped, an air hole for adsorption and separation is formed on the film contact surface. A film welding device that is equipped with a plurality of press shearing devices that lift and lower formed punches to form punched sealing films, and has a rotor that can continuously rotate around a vertical axis and a plurality of seal head devices arranged around its outer periphery. The sealing head device is provided with a film holding part having a suction pipe capable of adsorbing and holding a sealing film, a container holding part holding a container to which the sealing film is welded, and a sealing film attached to the opening of the container. and a film welding part that is welded by pressure contact, and is intermittently rotated about a vertical axis between the shearing position of the press shearing device and the moving path of the film holding portion of the sealing head device, and the press shearing device is moved while stopped. A transfer table is provided with a plurality of film holders that receive the sealing film from the printer and pass it to the film holder of the sealing head device during rotation. A sealing device characterized by forming pores.