JPH079626Y2 - Drum for soft container assembly - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is designed to press the opening edge of the body part when attaching the peripheral edge of the upper wall or the lower surface wall to the opening edge of the tubular body part of the flexible container. The present invention relates to a drum for assembling a soft container, which can hold a body part in an unfolded state.

[Conventional technology]

FIG. 5 shows a conventional soft container assembling drum used for assembling a soft container. Reference numeral 1 shown in the figure is a cylindrical drum whose outer diameter is slightly smaller than the inner diameter of the body portion 3 of the soft container. This drum 1 has one end 1a supported by a support base 2 so as to be rotatable about a central axis. FIG. 5 is a diagram showing a state in which the body portion 3 is mounted on the drum 1 and the outer peripheral edge of the upper surface wall 4 is attached to the opening edge 3 a of the body portion 3.

Using this drum for assembling a soft container, a cylindrical body portion 3 as shown in FIG. 6, an upper surface wall 4 of a disc-shaped sheet having an article input tube 6 and an article output tube 7 are provided. A procedure for assembling the soft container having the lower wall 5 of the plate-like sheet will be described. First, as shown in FIG. 5, the drum 1 is inserted from the free end side thereof into the through hole 3c of the cylindrical body portion 3 of the soft container, and the opening edge 3b of the body portion 3 inserted first is free of the drum. The body 3 is folded back outward so as to face the end side. Then, align the opening edge 3a of the inner body portion 3 with the circumferential edge of the free end portion of the drum 1 and
The adhesive is applied to the outer peripheral surface of 3a, and the adhesive is applied to the annular portion 4a along the outer peripheral edge of the surface of the upper surface wall 4 on the side where the charging cylinder 6 projects. Then, the annular portion 4a on the outer peripheral edge of the upper surface wall 4 and the outer peripheral surface of the opening edge 3a of the body portion 3 are attached to each other with an adhesive applied respectively.

Next, the outer peripheral surface 4b of the upper surface wall 4 adhered to the body portion 3 and the circumferential portion 3d along the outer peripheral edge of the upper surface wall 4 on the outer peripheral surface of the body portion 3 are coated with an adhesive and the adhesive is coated. An adhesive is applied to one side surface of the rubber belt 8 having the above width. And
The rubber belt 8 is bonded to the outer peripheral surface 4b of the upper surface wall 4 coated with the adhesive and the circumferential portion 3d of the body 3 with the adhesive.

Then, the opening edge 3b of the body portion 3 which is folded back to be the outside
Is aligned with the circumferential edge of the free end of the drum 1 from above the rubber belt 8 and the opening edge of the body 3 which is the outer side in the same manner as above.
An annular portion 5a is formed by applying an adhesive to the outer peripheral surface of 3b and along the outer peripheral edge of the surface of the lower surface wall 5 on which the discharge cylinder 7 does not project.
Apply adhesive to. Then, the annular portion 5a of the lower surface wall 5 and the outer peripheral surface of the opening edge 3b of the body portion 3 are adhered to each other with an adhesive applied.

Further, the outer peripheral surface 5b of the lower surface wall 5 attached to the body portion 3, the drum 1
5c of the lower surface wall 5 along the outer peripheral edge of the surface on the free end side of the
An adhesive is applied to the circumferential portion 3e of the outer peripheral surface of the body portion 3 along the outer peripheral edge of the lower surface wall 5, and the adhesive is applied to one side surface of the rubber belt 9 having the width of the portion to which the adhesive is applied. Then, the rubber belt 9 is attached to the outer peripheral surface 5b of the lower surface wall 5 and the circumferential portion 3e of the body portion 3 with an adhesive applied to each of them.

However, in order to increase the sticking force of the sticking part, the upper surface wall 4, the lower surface wall 5 and the rubber belt 9 are respectively bonded to the body portion 3 at each time, and the body portion 3 and the upper surface wall 4 are rotated along with the drum 1. Then, the attaching portion is pressed by a roller (not shown) or the like.
The flexible container thus assembled is shown in FIG.

[Problems to be solved by the device]

In the conventional drum for assembling a soft container shown in FIG. 5, the outer diameter of the drum 1 is formed slightly smaller than the inner diameter of the body portion 3 so that the drum 1 can be easily inserted into the through hole 3c of the body portion 3 of the soft container. There is a need. However, when the outer diameter of the drum 1 is formed in this way, when the outer peripheral edges of the upper surface wall 4 and the lower surface wall 5 are bonded to both opening edges 3a and 3b of the body portion 3, and the rubber belts 8 and 9 are bonded. In doing so, since it is not possible to hold the respective portions to be bonded so as not to be displaced on the outer peripheral surface of the drum, the opening edge 3a of the body portion 3 during the bonding work,
3b, the upper surface wall 4, the lower surface wall 5 and the like are wrinkled, and there is a problem that the adhered portion may be wrinkled.

The object of the present invention is to easily attach and detach the body portion 3 of the soft container to the drum 1, and to attach the upper surface wall 4 and the lower surface wall 5 to the body portion 3.
An object of the present invention is to provide a soft container assembling drum that facilitates the sticking work by holding the portions to be stuck so as not to move when sticking and when the rubber belts 8 and 9 are stuck to them. To do.

[Means for Solving the Problems]

In order to achieve the above object, the drum for assembling a soft container of the present invention has an outer diameter slightly smaller than the inner diameter of the cylindrical body of the soft container and is supported in a cantilever manner about the central axis. The adjusting drum and the two frames connected via the rotating portion center the rotating portion in a direction approaching and a direction separating from each other within a plane perpendicular to the central axis of the adjusting drum. And a rotating frame which is rotatably mounted on the free end of the adjusting drum, and two semi-circular plates, one on each side, so as to form a notched circle on both sides. Attached to the center axis of the adjusting drum, the plate surfaces form a right angle to form an annular end surface on the free end side of the adjusting drum, which are continuous with the outer edges of the two semi-circular plates. Then the end surface A mold provided with a semi-circular peripheral surface portion to be formed, the two semi-circular arc plates, and a pair of end portions facing each other at the cutout position of the semi-circular peripheral surface portion and extending from one end portion of the pair of end portions. A bridge provided so as to supplement the notch and two frames of the expansion / contraction frame are connected to each other so that both ends of each frame are moved toward and away from each other, and are driven about the rotating portion. And a drive unit that is provided.

[Action]

When the soft container assembling drum of the present invention is used to assemble a soft container as shown in FIG. 6, for example, when the adjusting drum is inserted into the through hole 3c of the body portion 3 of the soft container or the assembled container is assembled. When removing the adjusting drum from the adjusting drum, drive the driving unit so that the two ends of the two frames of the expansion / contraction frame move from the positions apart from each other to the positions closer to each other, with each frame centering on the rotating unit. Rotate in a plane perpendicular to the central axis. By the rotation of the expansion / contraction frame, a pair of end portions facing each other at the cutout positions of the two semi-circular plates of the mold coupled to the expansion / contraction frame are rotated from a distant position to an approaching position, and The outer diameter formed by the semi-circular plates can be changed from an enlarged state slightly larger than the inner diameter of the body portion to a reduced state slightly smaller than the inner diameter of the body portion.

Also, for example, when the adhesive is applied to the outer peripheral surfaces of the opening edges 3a and 3b of the body portion 3 of the soft container from the state where the mold is reduced, the upper surface wall 4 and the lower surface are formed on the outer peripheral surfaces of the opening edges 3a and 3b. When the wall 5 is expanded for bonding, the drive unit is driven to center the rotating unit until both ends of the two frames of the expansion / contraction frame move from positions close to each other to positions separated from each other. And rotate each frame. By the rotation of the expansion / contraction frame, a pair of end portions facing each other at the cutout positions of the two semi-circular plates of the mold form a right angle with respect to the central axis of the adjusting drum from a position close to a position apart. By rotating in a plane, the outer diameter formed by the two semi-circular plates of the mold can be changed from the reduced state to the enlarged state. With the outer diameter of the mold enlarged, the portion of the soft container to be attached can be attached to the mold without being displaced. The centers of the two semi-circular plates are aligned with the center axis of the adjusting drum in the state where the mold is expanded, and the semi-circular peripheral surface portions of both of them and the cutout portions of the annular end surface are formed. Are supplemented by bridges.

Further, since the adjusting drum is cantilevered so as to be rotatable about the central axis, the adjusting drum can be rotated together with the adjusting drum in a state in which, for example, the body portion 3 of the soft container is mounted on the adjusting drum. .

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. This soft container assembly drum is mounted on a turntable 12 which is rotatably mounted on a base 11 as shown in FIG.
The table is mounted radially. The base 11 is a disc-shaped body and is installed on the upper surface of the floor 16. On the upper surface of the base 11, a turntable 12 having an outer diameter substantially the same as that of the base 11 and supported by six wheels 13 (one shown in the drawing) is placed. The turntable 12 is rotatably provided on the base 11 about the central axis of the base 11. A total of six fixed frames 14 (one shown in the figure) are provided at six positions along the circumference of the outer peripheral edge of the upper surface of the rotary table 12, and each fixed frame is provided. A support shaft 15 is attached to each of the 14 shafts. The support shaft 15 is arranged at 60 ° intervals along the outer peripheral edge of the turntable 12, the central axis of the support shaft 15 is parallel to the upper surface of the floor 16, and the tip end is outside the center of the turntable 12. It extends in the direction of radiation. An adjusting drum 17 is rotatably attached to the support shaft 15.
A scaling frame 18 is attached to the free ends of 17. A mold 19 is attached to the expansion / contraction frame 18, and the mold 19 is expanded / contracted by driving the expansion / contraction frame 18 by a drive unit provided in the adjusting drum 17. The bridge 20 is provided on the outer peripheral portion of the mold 19.

The adjusting drum 17 includes a rotating frame 21 and a guide portion 22. The rotating frame 21 is formed by connecting shaped steels into a cylindrical basket shape as shown in FIG.
It is rotatably supported by the support shaft 15 via bearings 23, 24, 25 in a state where the center axis line 74 of 21 coincides with the center axis line of the support shaft 15. And this rotating frame 21
Is rotatably driven by a motor 26 attached to the fixed frame 14, and a spur gear 27 provided at the base end of the rotary frame 21 and a spur gear 28 connected to the rotary shaft of the motor are meshed with each other. . A body cover 29 is attached to the outer periphery of the rotary frame 21. The guide portion 22 is a guide screw.
It is provided with 30, a guide rod 31, and a connecting rod 32. Guide screw 30
1 is provided with a left screw portion 33 on the left side portion and a right screw portion 34 on the right side portion of FIG. Eight guide screws 30 (two appear in the figure) parallel to the support shaft 15 at 45 ° intervals around a circle smaller than the diameter of the rotating frame 21 about the support shaft 15. ) It is provided. Both ends of the guide screw 30 are rotatably supported by respective inner portions of both ends of the rotary frame 21 via bearings 35 and 36. The left screw portion 33 and the right screw of the eight guide screws 30 are rotatably supported. Part 34
Nuts 37 and 38 are respectively screwed into the. And this 8
A total of eight nuts 37 screwed into the left screw portion 33 of the book guide screw 30 are connected via an annular body 39, and another total eight nuts 38 screwed into the right screw portion 34 are also included. They are connected via another ring 40. Further, a sprocket 41 is attached to the left end of each of the eight guide screws 30, and an annular chain 42 shown by a broken line is hung from the outside of each of the eight sprockets 41. Further, another sprocket 43 is attached to one guide screw 30, and this sprocket 43 is rotatably supported on the inner surface of the left end portion of the rotating frame 21 by another sprocket 44 and a chain 45. Are connected via. As shown in FIG. 1, compression springs 46, 46 are inserted through the eight guide screws 30 outside the nuts 37, 38 of the left screw portion 33 and the right screw portion 34, respectively. The compression spring 46 presses the nut 37 to the right at the right end with the left end locked to the stopper. The right compression spring 46 has a nut at the left end while the right end is locked to the end surface of the bearing 36.
38 is pushed to the left. These compression springs 46 can prevent the nuts 37, 38 from rattling with the guide screw 30 by pressing the nuts 37, 38. Guide rod 31
Is a support shaft which is larger than the diameter of the rotary frame 21 about the support shaft 15 and is arranged at an angle of 45 ° along a circle which is slightly smaller than the inner diameter of the body portion 3 of the soft container mounted on the adjusting drum 17. It is provided parallel to 15. Each guide rod 31 is provided corresponding to each guide screw 30 and is connected to each nut 37, 38 of the guide screw 30 via two connecting rods 32. First
As shown in the figure, the left connecting rod 32 has one end connected to the corresponding left end of the guide rod 31 via a pivotal support 49, and the other end connected to a nut 37 via a pivotal support 47. is doing. One end of the right connecting rod 32 is connected to the right end of the corresponding guide rod 31 via the pivotal support 50, and the other end is connected to the nut 38 via the pivotal support 48. It should be noted that 11 rubber rollers 51 are attached to each of the guide rods 31 at positions where the roller surfaces of the guide rollers 31 protrude from the outer surface of the guide rod 31. The rubber roller 51 facilitates attachment / detachment of the tubular body 3 of the soft container to the outer circumference of the eight guide rods 31. When the outer diameters of the eight guide rods 31 of the adjusting drum 17 configured as described above are set to an appropriate size for mounting the body portion 3 of the soft container, the movable shaft 52 is moved in a predetermined direction by the ratchet handle 53. By rotating the guide screw 30, the eight guide screws 30 are rotated. When the guide screw 30 rotates, the nuts 37 and 38 screwed to the left screw portion 33 and the right screw portion 34 of the guide screw 30 move in the directions away from each other (approaching directions). The diameter can be moved in the increasing direction (decreasing direction).

As shown in FIGS. 1 and 2, the expansion / contraction frame 18 is composed of two frames 55 having a U-shaped cross section, which are connected to each other via a rotating portion 54, and the two frames 55 can be expanded / contracted. It is provided with six guides 56 held at the free end of the rotating frame 21. As shown in FIG. 2, the two frames 55 are separated from each other at both ends 57, 57, and each frame 55 is held by three guides 56 so that they form a circle. Each of the six guides 56 has a through hole 58 formed therein, and is attached to the free end of the adjusting drum 17. A line passing through the centers of these through holes 58 forms a circle in a plane that is perpendicular to the central axis line 74 of the adjusting drum 17. The two frames 55 are inserted into the through holes 58 of the six guides 56, and are inserted and retained so as to be movable in the diameter direction of the circle formed by the center lines of the six through holes 58. There is.

As shown in FIG. 2 (a), the mold 19 is provided with a notch 59 in the upper part, and two semi-circular plates 60 are provided so that the outer peripheral edges form a circle. It is attached to the frame 55. The center of the circle of the outer peripheral edge of the two semi-circular plates 60 coincides with the central axis line 74 of the adjusting drum 17, and each plate surface is perpendicular to the central axis line 74 of the adjusting drum 17. An annular end surface is formed on the free end side of the adjusting drum 17, and semicircular arc-shaped peripheral surface portions 61 that continuously form end peripheral surfaces are provided on the outer edges of the two semicircular arc-shaped plates 60. There is.

As shown in FIGS. 2 and 3, the bridge 20 is a short arc-shaped body having a U-shaped cross section, and two semi-circular plates 60 are formed in the notch 59 of the mold 19 shown in FIG. And the semi-circular arc-shaped peripheral surface portion 61 extends from the end portion on the left side in the drawing to the end portion on the right side in order to supplement the cutout portion 59.

The drive unit 62 is a motor mounted on the motor mounting unit 63.
Equipped with 64. This motor mounting portion 63 is shown in FIGS.
As shown in the figure, an end cover 65 attached to the free end of the adjusting drum 17 at a position corresponding to the cutout 59 of the mold 19.
It is provided in. The rotating shaft of the motor 64 has two spur gears.
It is connected to a guide bolt 68 via 66 and 67. A nut 69 is screwed into the guide bolt 68 and is rotatably supported by the motor mounting portion 63. The nut 69 faces the respective end portions 57 of the two frames 55 on the left side and the right side as shown in FIG. The left side portion of the nut 69 and the end portion 57 of the left frame 55 shown in the figure are connected via the left connecting body 70 in a state where they are pivotally supported by both end portions of the left connecting body 70, respectively. There is. The right side portion of the nut 69 and the end portion 57 of the right frame 55 are connected to both end portions of the right connecting body 71 via the right connecting body 70 while being pivotally supported by the pivotal supporting portions. In FIG. 2A, the motor 64 rotates in a direction to widen the gap between the end portions 57, 57 of the two frames 55, and the outer surfaces of the two frames 55 have through holes 58 for the six guides 56. It is a figure which shows the state which contact | abutted to the inner surface of the outer side position. In this state, the outer diameter of the mold 19 is slightly larger than the inner diameter of the body portion 3 of the soft container. In FIG. 2B, the motor 64 rotates in the direction in which the distances between the end portions 57, 57 of the two frames 55 are close to each other, and the inner surface of the two frames 55 has the through holes 58 of the six guides 56. It is a figure which shows the state contact | abutted to the inner surface of an inner side position. In this state, the dimension of the mold 19 in the diameter direction is slightly smaller than the inner diameter of the body portion 3 of the soft container.

Next, a procedure for assembling the soft container shown in FIG. 6 using this soft container assembling drum will be described. First,
The expansion / contraction frame 18 is driven by the drive unit 62 to reduce the outer diameter of the mold 19 to a state shown in FIG. 2 (b) in which the outer diameter is slightly smaller than the inner diameter of the body portion 3 of the soft container. Then, as shown in FIG. 1, the adjusting drum 17 is inserted from the free end side thereof into the through hole 3c of the body portion 3 of the soft container, and the opening edge 3b of the body portion 3 inserted first is free of the adjusting drum 17. The body 3 is folded back outward so as to face the end side. Then, the opening edge 3a of the inner body portion 3 is aligned with the circumferential edge of the mold 19 on the free end side, and the drive portion 62 expands and contracts to temporarily fix the opening edge 3a of the body portion 3 to the mold 19. The frame 18 is driven so that the outer diameter of the mold 19 becomes substantially equal to the inner diameter of the body portion 3. At this time, in order to check whether the opening edge 3a of the body portion 3 is aligned with the circumferential edge of the mold 19, the motor 26 is driven to adjust the drum.
The mold 19 is rotated about 17 times together with 17. If the opening edge 3a of the body 3 is aligned with the circumferential edge of the mold 19, the drive unit 62 is driven to prevent the body 3 from being displaced from the mold 19, and the outer diameter of the mold 19 is changed. The enlarged state shown in FIG. 2A is slightly larger than the inner diameter of the body portion 3. If the opening edge 3a of the body 3 is
If the position is not correct after it is temporarily fixed to 19, fix it with this temporarily fixed state. After that, the opening edge of the body 3
An adhesive is applied to the outer peripheral surface of 3a, and at the same time, an adhesive is applied to the annular portion 5a along the outer peripheral edge of the surface of the upper surface wall 4 on the throw-in cylinder 6 side. Then, as shown in FIG. 4 (a), the annular portion 5a of the upper surface wall 4 and the outer peripheral surface of the opening edge 3a of the body portion 3 are bonded to each other with an adhesive applied.

Next, the outer peripheral surface 4b of the upper surface wall 4 adhered to the body portion 3 and the circumferential portion 3d along the outer peripheral edge of the upper surface wall 4 on the outer peripheral surface of the body portion 3 are coated with an adhesive and the adhesive is coated. An adhesive is applied to one side surface of the rubber belt 8 having the above width. And
The rubber belt 8 is bonded to the outer peripheral surface 4b of the upper surface wall 4 coated with the adhesive and the circumferential portion 3d of the body 3 with the adhesive.

Then, as shown in FIG. 4 (b), the opening edge 3b of the body portion 3 which is folded back to the outside is placed on the rubber belt 8 from the mold.
Align with the circumference of the circle on the free end side of 19. This procedure is the same as the procedure in which the opening edge 3a on the inner side of the body 3 is fitted to the mold 19. First, the outer opening edge 3b is temporarily fixed to the mold 19, and after confirming that the opening edge 3b is aligned with the predetermined position of the mold 19, the mold 19 is expanded. Thereafter, an adhesive is applied to the outer peripheral surface of the opening edge 3b of the body portion 3 which is the outer side, and is adhered to the annular portion 5a along the outer peripheral edge of the surface of the lower surface wall 5 on which the discharge cylinder 7 does not project. Apply the agent. Then, the annular portion 5a at the outer peripheral edge of the lower surface wall 5 and the outer peripheral surface of the opening edge 3b of the body portion 3 are attached to each other with an adhesive applied.

Further, the outer peripheral surface 5 of the lower surface wall 5 attached to the opening edge 3b of the body portion 3
b, an adhesive is applied to the annular portion 5c of the lower surface wall 5 along the outer periphery of the surface on the free end side of the mold 19 and the circumferential portion 3e of the outer peripheral surface of the body portion 3 along the outer peripheral edge of the lower surface wall 5. The adhesive is applied to one side surface of the rubber belt 9 having the width of the portion to which the adhesive is applied. Then, as shown in FIG. 4B, the rubber belts 9 are attached to each other across the outer peripheral surface 5b of the lower surface wall 5 and the circumferential portion 3e of the body portion 3 with an adhesive applied to each.

However, after bonding the upper surface wall 4 and the lower surface wall 5 to the body portion 3, and after bonding the rubber belts 8 and 9 over the body portion 3 and the upper surface wall 4 and the body portion 3 and the lower surface wall 5, respectively. At this point, there is provided a step of rotating the body portion 3, the upper surface wall 4, etc. along with the adjusting drum 17 and pressing the sticking portion with a roller or the like, so that the sticking force of each sticking portion can be enhanced. In this way, the soft container shown in FIG. 6 can be assembled.

Further, the mold 19 can be replaced according to the inner diameter of the body 3. To replace the mold 19, remove the mold 19 attached to the frames 55, 55 and replace the mold 19 of the desired outer diameter with the frame 5.
It should be installed on 5, 55.

[Effect of device]

Since the present invention is configured as described above, when the soft container, for example, the body portion 3 is attached to or detached from the adjusting drum, the work is performed by reducing the outer diameter of the mold. There is an effect that it can be made easier.

Then, for example, by aligning the opening edges 3a, 3b of the body 3 with the semicircular arc-shaped peripheral surface of the mold so that the outer diameter of the mold is enlarged, the opening edges 3a, 3b of the body 3 are closed. There is an effect that the semicircular arc-shaped peripheral surface can be held so as not to be displaced. In this way, since the opening edges 3a and 3b of the body 3 can be held in the mold so as not to be displaced, the adhesive is applied to the outer peripheral surfaces of the opening edges 3a and 3b of the body 3. This is advantageous in that it is easy to carry out, and it is easy to attach the upper wall 4 and the lower wall 5 of the soft container to the outer peripheral surface coated with this adhesive.

Further, since the annular end faces are formed on the two semi-circular plates of the mold, it is easy to apply the adhesive to the portion corresponding to the annular end face of the lower surface wall 5 mounted on the mold. However, there is an effect that it is easy to attach a rubber belt or the like to the annular portion of the lower surface wall coated with the adhesive.

Furthermore, since the outer peripheral edges of the opening edges 3a and 3b of the body portion 3, the upper surface wall 4 and the lower surface wall 5 can be attached to the semicircular arc-shaped peripheral surface portion of the mold without displacement. As shown in FIG. 2 (a), the body portion 3 is rotated while the adhesive is being discharged from the nozzle 72, and the brush 73 is rotated in a state of being in contact with the semicircular arc-shaped peripheral surface portion of the mold to rotate the body portion. Three
This is effective for automating the work of applying the adhesive to the outer peripheral surfaces of the opening edges 3a and 3b. Further, the opening edges 3a, 3b of the body portion 3
It is also effective for automating the work of bonding the upper surface wall 4, the lower surface wall 5, the rubber belt 9 and the like.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a drum for assembling a soft container according to the present invention as seen from the direction AA of FIG. 2, FIG. 2 (a),
(B) is a front view showing the mold of the same embodiment in an expanded state and a contracted state, and FIG. 3 is a view of the mold and the expansion / contraction frame of the same embodiment as seen from the BB direction in FIG. Sectional views, FIGS. 4 (a) and 4 (b) are partial sectional views of the mold of the embodiment in which the parts of the soft container are attached, as seen from the direction AA of FIG. 2, and FIG. FIG. 6 is a perspective view showing a state in which the body part and the top wall of the soft container are mounted on the soft container assembling drum, and FIG. 6 is a partial vertical side view of the soft container. 3 ... Body, 4 ... Top wall, 5 ... Bottom wall, 6 ... Injection tube, 7 ... Exhaust tube, 8,9 ... Rubber belt, 11 ... Adjustment drum center axis, 17 ... Adjustment Drum, 18
…… Scaling frame, 19 …… Mold, 20 …… Bridge, 26…
… Adjust drum drive motor, 54… Rotating part, 55…
… Frame, 56 …… Guide, 58 …… Guide through hole, 59
...... Notch part, 60 ...... semi-circular plate, 61 ...... semi-circular peripheral surface part, 62 ...... drive part, 64 ...... expansion and contraction frame drive motor.

Claims (1)

[Scope of utility model registration request] 1. An adjusting drum, which has an outer diameter slightly smaller than the inner diameter of a tubular body of a soft container and is supported in a cantilever manner about a central axis, is connected via a rotating portion. The two ends of the adjusting drum are rotatable about the rotating portion in a direction approaching and a direction separating from each other in a plane perpendicular to the central axis of the adjusting drum. And the expansion / reduction frame attached to each of them, and two semi-circular plates are attached to each of the two frames so as to form a notched circle on both sides, with respect to the central axis of the adjustment drum. And each plate surface forms a right angle to form an annular end surface on the free end side of the adjusting drum, and a semicircular arc-shaped peripheral surface that continuously forms end peripheral surfaces on the outer edges of the two semicircular arc-shaped plates. A mold provided with a surface portion, and the above 2 Of the semi-arcuate plate and a bridge provided so as to extend from one end of a pair of end portions facing each other at the cut-out position of the semi-circular peripheral surface portion so as to supplement the cut-out, and the two frames of the expansion / contraction frame. A drum for assembling a soft container, comprising: a drive unit that is connected to a frame and is driven so as to drive both ends of each frame toward and away from each other about the rotating unit.