JPH06219499A - Cap sealing head - Google Patents

Abstract

PURPOSE:To simplify a pressing structure for machining a cap for a sled roller and a skirt roller. CONSTITUTION:A sealing head 11 to be coupled to a lower part of a sealing head support means 4 comprises an adapter 31, an attaching block 47, a roller ring 45, a roller 51, a bearing case 57, a center, shaft 61, a spring receive 49, a head spring 65, a plate cam 83, a plate spring lever 81 having a sled roller 93 and a plate spring lever 81 having a skirt roller 95. After a cap press 75 at the lower end of the center shaft 61 relatively in a state of rotation being stopped pushes an untightened cap put on a container, a downward stroke is done, whereby the rollers 51,51 under the rotating roller rings 45,45 push the plate cams 83,83 on the plate spring levers 81,81 which are also rotating, so that the sled roller 93 and the skirt roller 95 are moved inward to have a cap clamped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap for forming a screw cap from a cup-shaped material made of a metal plate such as aluminum covered with a container having a screw groove on the upper outer peripheral surface, and tightening the cap at the container mouth. It concerns a sealing head.

[0002]

2. Description of the Related Art Conventionally, a cap sealer having a supporting body, a sealing head supporting means mounted on the supporting body, and a sealing head mounted on the supporting body has been put to practical use. The sealing head support means is
It has a central shaft fixed to the support body and a rotating member mounted around the central shaft. The central shaft moves up and down integrally with the support body, and the rotating member is rotatable relative to the central shaft and moves up and down integrally with the central shaft. The sealing head includes a mounting portion, a pressing center shaft for preventing relative rotation of the cap fitted on the mouth and neck of the container, and a thread roller and a skirt roller for tightening the cap on the mouth and neck of the container. , A cap sealer mechanism with a cam that brings them closer to the cap. The pressing center shaft is connected to the central shaft body of the sealing head supporting means and fixed in the rotational direction, and the sealing mechanism is rotatable relative to the center shaft and the rotating member of the sealing head supporting means. Connect and rotate. Further, both the center shaft and the sealing mechanism can be moved up and down together with the sealing head supporting means. A conventional example of this cap sealer will be described below.

FIG. 5 shows an example of a conventional cap sealer, which includes a supporting body 2, a sealing head supporting means 4 mounted on the supporting body 2, and the sealing head supporting means 4.
It has a sealing head 6 attached to the. Further, the sealing head support means 4 has a central shaft 8 extending vertically.
Further, it has a rotating member 10 which is rotatable relative to the central axis 8. Further, a bearing housing 12 is attached to the support body 2, and an elongated tubular rotary member 10 is rotatably supported inside the bearing housing 12 via a bearing 14, and one end portion of the rotary member 10 is rotatably supported. That is, the transmission pulley 18 is attached to the upper end by the nut 16. The transmission pulley 18 and the rotating member 10 are configured to rotate integrally via a key 20, the central shaft 8 is disposed inside the rotating member 10, and both ends thereof, that is, the upper end and the lower end are bearings 22. It is rotatably supported by the rotating member 10 via. Further, one end of the central shaft 8, that is, the upper end is fixed to the L-shaped member 26 by the nut 24.
The other end of the character-shaped member 26 is attached to the upper end of the bearing housing 12.

Further, in FIG. 5, a cap 28 is mounted on the lower end surface of the bearing housing 12, and spacers 30 and 32 are provided between the bearing 14 and between the bearing 14 and the transmission pulley 18, respectively. ing. Spacers 34 and 36 are provided between the pair of bearings 22 and between the bearing 22 and the L-shaped member 26, respectively. As described above, in the sealing head supporting means 4, when the support body 2 is vertically moved by a mechanism (not shown), the central shaft 8 and the rotating member 10 are also vertically moved integrally with the support body 2, and the support body 2 is also moved vertically. 2 does not rotate about an axis extending in the vertical direction. Therefore, when the conductive pulley 18 is rotated in a predetermined direction by a conductive member (not shown) such as a conductive belt, the rotating member 10 is rotated in the predetermined direction relative to the support body 2 and the central shaft 8.

Next, the sealing head 6 will be described. The sealing head 6 comprises a sealing head pressing means indicated by reference numeral 38 and a sealing head tightening means indicated by reference numeral 40. The sealing head pressing means 38 is It has a central shaft 42 and a pressing tool 44, and one end of the coaxial shaft 42, that is, the upper end is mounted so as to rotate integrally with the other end of the central shaft 8 of the sealing head supporting means 4, that is, the lower end. The pressing tool 44 is attached to the other end of the central shaft 42, that is, the lower end, and the other end has a concave portion having a shape substantially corresponding to the top wall (not shown) of the lid fitted to the mouth and neck of the container. Are formed. Further, the sealing head tightening means 40 has a pair of skirt rollers 46 and a pair of thread rollers 48, which are arranged at an interval of substantially 90 degrees. Further, a sleeve-shaped outer shaft member 50 is arranged outside the central shaft 42, and
Both ends of the shaft are rotatably supported by the outer shaft member 50 via bearings 52. A member 54 is fixed to the outer shaft member 50, and rocking levers 58, 5 are attached to the member 54 via a shaft 56.
8 is swingably mounted, and the swing levers 58, 5
A skirt roller 46 and a thread roller 48 are rotatably attached to the lower end of each of 8 via a sleeve 60.

The skirt roller 46 and the thread roller 48 are held in the positions shown by the biasing action of the coil springs 62, but they can move downward from the above positions against the biasing actions of the coil springs 62. it can. The sealing head 6 also comprises an actuating mechanism 64 for moving the skirt rollers 46 and the thread rollers 48 inward in the radial direction, i.e. for acting these rollers 46 and 48 on the skirt wall of the lid fitted on the container. There is. The operating mechanism 64 includes a cam member 66 and the cam member 66.
A driven roller 68 that cooperates with the cam member 66 is provided.
Is composed of a sleeve-shaped member, and is an outer shaft member 50.
Of the cam member 66 and the outer shaft member 50.
A key 70 is provided between and. Also, the cam member 6
Cam portions are provided on the outer peripheral surface of 6 at intervals of substantially 90 degrees.

On the other hand, the driven rollers 68 are rotatably mounted on an operating arm 72 rotatably mounted on the shaft 56 via a short shaft, and each driven roller 68 contacts a corresponding cam portion of the cam member 66. The cam member 66, the outer shaft member 50, and the central shaft member 42 are relatively movable in the vertical direction,
When the outer shaft member 50 and the central shaft 42 are moved upward relative to the cam member 66, the cam portion of the cam member 66 causes the swing lever 58 to swing inward via the driven roller 68 and the operation arm 72. The skirt roller 46 and the sled roller 48 are moved inward. As described above, in the sealing head 6, the central shaft 42 is connected to the central shaft 8 of the sealing head supporting means 4, and the cam member 66 is connected to the rotating member 10 of the sealing head supporting means 4.

When the lid fitted to the mouth and neck of the container is tightened, the transmission pulley 18 is rotated in a predetermined direction, whereby the rotating member 10 of the sealing head supporting means 4 and the cam member 66 of the sealing head 6, the outside. Shaft member 5
0, the member 54, the swing lever 58, the skirt roller 46, and the thread roller 48 are rotated in the predetermined direction. Then, in such a state, the support body 2 is moved downward. When the support main body 2 is lowered, first, the pressing tool 44 of the sealing head pressing means 38 contacts the peripheral portion of the top wall of the lid (not shown) fitted to the mouth and neck of the container, and the lid is attached to the container. Press on the mouth and neck. The pressing tool 44 as described above
Contact with each other, the central shaft 42, the central shaft 8, the L-shaped member 2
6, the relative rotation of the lid with respect to the container is reliably prevented via the bearing housing 12 and the support body 2. Pressing tool 4
When the support body 2 is further lowered after the abutting of 4 as described above, the downward movement of the pressing tool 44 is blocked by the container (not shown), so that the biasing action of the spring means (not shown) is resisted. The sealing head pressing means 38, that is, the pressing tool 44 and the central shaft 42 are moved upward relative to the other components (sealing head supporting means 4 and sealing head tightening means 40).

Therefore, the cam portions provided on the cam member 66 act on the corresponding driven rollers 68, and the swing lever 58 is swung inward via the driven rollers 68 and the operating arm 72. Thus, the skirt roller 46 is tilted inward in the radial direction and acts on the lower end of the skirt wall of the lid, and the lower end of the skirt wall is bent inward in the radial direction to form a locking jaw portion formed on the neck of the container ( (Not shown). At the same time, the thread roller 48 is tilted inward in the radial direction and acts on the skirt wall main portion of the lid, and corresponds to the male thread formed on the mouth and neck of the container, and the female thread is formed on the skirt wall main portion. To form.

[0010]

In the conventional device shown in FIG. 5, many parts are incorporated in the swing lever 58 for supporting the thread roller 48 and the skirt roller 46 for tightening the cap to the neck of the container. Therefore, the structure becomes complicated and the cost becomes high, and the push-cut positions of the thread roller 48 and the skirt roller 46 are fixed, so that there is a problem that it is not possible to cope with variations in the neck and neck dimensions of the container. . The present invention has been proposed to solve the above conventional problems.

[0011]

For this reason, according to the present invention, a central shaft fixedly supported by a vertically movable supporting body is rotatably attached to the outside of the central shaft, and a sealing head is attached and detached. A cap sealing head connected to a lower part of a sealing head supporting means constituted by a rotating member having a connecting means that can be easily attached, wherein the cap sealing head is connected to the rotating member of the sealing head supporting means and a female screw is formed on an inner cylindrical surface. Adapter, a plurality of mounting blocks mounted equidistantly on the downward cylindrical bottom surface of the same adapter, and a male screw threaded to the female thread of the adapter on the outer peripheral surface, and equally mounted on the cylindrical surface. With four elongated holes, four freely rotatable rollers mounted on the lower part of the roller ring evenly distributed on the circumference, and the mounting block A bearing case having a plurality of longitudinal grooves evenly arranged on the circumference so that the upper and lower shafts are supported by the bearing case, and the upper end axis is the center of the sealing head supporting means. The center shaft is fitted to the shaft so as to be slidable in the axial direction, and the center shaft is provided between the center shaft having the cap retainer at the lower end and the center shaft and the spring bearing fixed to the lower part of the mounting block. Urge it to push down,
A pair of leaf spring levers having a head spring installed via a thrust bearing, a plate cam symmetrically attached to the outer circumference of the bearing case, having a longitudinal position adjustable mid-position, and a thread roller provided at the lower end. And a pair of leaf spring levers, which are symmetrically attached to the outer periphery of the bearing case at positions rotated by 90 degrees, have a plate cam whose longitudinal position can be adjusted in the middle, and have a skirt roller at the lower end. The cap retainer at the lower end of the center shaft, which is relatively in a rotation stopped state, pushes an untightened cap that covers the container, and then the descending stroke that is performed subsequently causes the roller ring in a rotating state. Similarly, the roller at the bottom of the blade is in the rotating state. Moving the over La skirt roller inside made of so as to the seaming of the cap, it is an unit for which a problem solution.

[0012]

With the ceiling head support means supported by the vertically movable support body lowered and in a relatively stopped state, the cap retainer at the lower end of the center shaft pushes the unsealed cap that covers the container. After that, the subsequent lowering stroke causes the lower roller of the rotating roller ring to descend, and also pushes the plate-shaped cam on the leaf spring lever that is in the same rotating state but does not descend to move the sled roller and skirt roller inside. Move to and tighten the cap. Further, the roller ring is rotated by 90 degrees with respect to the adapter to change the longitudinal position of the roller ring, and the position of the plate-shaped cam is changed to adjust the position of the force point of the operating roller with respect to the leaf spring lever, thereby adjusting the thread roller. And the cap processing pushing force of the skirt roller can be increased or decreased. Further, since the leaf spring lever that operates the thread roller and the skirt roller has flexibility in the moving direction, it is possible to cope with the dimensional error of the neck of the container.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments of the drawings. FIGS. 1 to 4 show an embodiment of the present invention, in which a cap sealing device is mounted on the supporting main body 2 which can move up and down. It comprises a sealing head support means 4 and a sealing head 11 attached to it. In addition,
1 to 4, the same parts as those in FIG. 5 will be described using the same reference numerals. The sealing head support means 4 has a central shaft 8 extending in the vertical direction and a rotary member 10 that is rotatable relative to the central shaft 8. A bearing housing 12 is attached to the support body 2, and an elongated tubular rotary member 10 is rotatably supported inside the bearing housing 12 via a bearing 14. A conductive pulley 18 is attached to the upper end of the rotary member 10 by a nut 16, and the conductive pulley 18 and the rotary member 10 rotate integrally via a key 20.

The central shaft 8 is disposed inside the rotating member 10, and the upper end and the lower end of the central shaft 8 are provided with bearings 22 to form the rotating member 1.
It is rotatably supported at 0. Further, the upper end of the central shaft 8 is fixed to the L-shaped member 26 by the nut 24, and the other end of the L-shaped member 26 is attached to the upper end of the bearing housing 12 and is attached to the lower end surface of the bearing housing 12. Is fitted with a cap member 28, and between the bearings 14 and the bearing 1.
4 and the transmission pulley 18 between the spacers 30
And 32 are interposed. Further, spacers 34 and 36 are provided between the pair of bearings 22 and between the bearing 22 and the L-shaped member 26, respectively. In this way, in the sealing head supporting means 4, the central shaft 8 and the rotating member 10 also move up and down when the support body 2 moves up and down by a mechanism (not shown). Further, the support body 2 is not rotationally driven about an axis extending in the vertical direction, and therefore when the conductive pulley 18 is rotationally driven in a predetermined direction by a conductive member (not shown) such as a conductive belt, the rotary member 10 is rotated. Rotates in a predetermined direction relative to the support body 2 and the central axis 8. A bush 41 having a square hole is fixedly provided at the lower end of the central shaft 8.

Next, the sealing head 11 will be described. The sealing head 11 includes an adapter 31 directly coupled to the rotating member 10 of the sealing head support means 4, a roller ring 45 screwed to the adapter 31, and an adapter 31.
And a sealing roll mechanism having a structure capable of relatively sliding up and down inside the combination of the roller rings 45. The adapter 31 has a male screw 31a on its upper portion, and is screwed with a female screw 43a of the sealing head coupling nut 43 so that it can be easily attached to and detached from the rotary member 10. Further, the coupled adapter 31 and rotating member 10 are configured to rotate integrally via the key 35. Inside the adapter 31, four mounting blocks 47 are evenly arranged on the circumference and It is attached by bolts 55. A female screw is formed on the inner cylindrical surface of the adapter 31, and a roller ring 45 having a male screw on the outer peripheral surface is screwed into the inner screw surface. The cylinder of the roller ring 45 is provided with four elongated holes 45a. There is. At the lower part of the roller ring 45, four rollers 51 are provided so as to be freely rotatable on a horizontal tangential horizontal shaft 53 mounted equidistantly on the circumference. Furthermore, on the outer peripheral surface of the adapter 31, one screw hole is formed in the radial direction, and the fixing bolt 3
3 is screwed together. When adjusting the vertical position of the roller ring 45, the roller ring 45 is rotated to move in and out of the adapter 31. Further, by inserting the end of the fixing bolt 33 into the elongated hole 45a of the roller ring, the roller ring 45 can be positioned with respect to the adapter 31 every 90 degrees rotation.

Reference numeral 57 denotes a bearing case, which is a main member of the sealing roller mechanism, and which has four longitudinal grooves 5 equally distributed on the circumference.
7a, which engages with the mounting block 47 through the vertical grooves 57a of the four jobs and can slide up and down in the adapter 31. Also mounting block 47
The lower end of is attached to a spring receiver 49 by a bolt 55. Reference numeral 61 is a center shaft supported by the bearing case 57 via the bearing 59, and has an angular shaft 61a at its upper end. The angular shaft 61a is provided in the angular hole of the bush 41 at the lower end of the central shaft 8 of the sealing head supporting means 4, It is fitted so that it can slide vertically. A cap retainer 75 is attached to the lower end of the center shaft 61, and a head spring 65 and a thrust bearing 69 are provided between the center shaft 61 and the spring receiver 49 fixed to the attachment block 47. The center shaft 61 is biased so as to be pushed down via the nut 71. A pair of leaf spring levers 81 are symmetrically attached to the outer periphery of the bearing case 57,
A support block 91 is fixed to the lower end of the leaf spring lever 81, and a thread roller 93 is rotatably attached to a sleeve 97 that is screwed with the support block 91.

Further, another pair of leaf spring levers 81 is attached to the outer periphery of the bearing case 57 at a position rotated 90 degrees with the leaf spring lever 81.
Similarly, a support block 91 is fixed to the lower end of the skirt roller 95, and a skirt roller 95 is rotatably mounted on a sleeve 99 screwed to the support block 91. 2 above
The circumferential angular position of the pair of leaf spring levers 81 is matched with the circumferential angular position of the roller 51 of the roller ring 45 described above. The thread roller 93 and the skirt roller 95 are arranged between the sleeve 97 and the sleeve 99, respectively.
Although it is held at the position shown in the drawing by the biasing force of the coil spring 101, it can be moved downward from the position shown in the drawing against the biasing force of the coil spring 101. Further, a plate cam 83 is attached to each plate spring lever 81 by a bolt 85 and a nut 87 so that the position of the plate cam 83 can be changed by using the long hole 81b formed in the plate spring lever 81. Has become.

A detection shaft 73 is slidably fitted in an elongated hole formed in the lower end of the center shaft 61, and a horizontal pin 79 is inserted in the middle of the detection shaft 73. 79 passes through the elongated hole 61c of the center shaft 61 and is fixed by a ring 77. The bearing 103 is fitted in the ring 77. In the cap sealing process, the cap 39 that has not been tightened yet is attached to the container 37.
If it is covered, the detection shaft 73 as shown in FIG.
Is pushed up, and at the same time, the ring 77 also rises, so that the support block 91 at the lower end of the leaf spring lever 81 and the thread roller 93 and the skirt roller 95 supported by this can move inward, and the cap sealing work is started without any trouble. However, if the container 39 is not covered with the cap 39, neither the detection shaft 73 nor the ring 77 rises, the projection 91a of the support block 91 at the lower end of the leaf spring lever 81 hits the ring 77, and stops, and the leaf spring lever 81 bends. Thread roller 93 and skirt roller 95 without peeling
Does not directly touch the neck of the container 37.

The operation of the embodiment shown in FIGS. 1 to 4 constructed as above will be described below. FIG. 1 shows a state in which the container 37 is not provided below the sealing head 11, and FIG. 3 shows the sealing head 11. The container 37 covered with the cap 39 is placed on the lower side, and the cap sealing operation is performed. In the cap sealing step, the transmission pulley 18 is rotationally driven in a predetermined direction, whereby the rotary member 10 of the sealing head supporting means 4, the adapter 31 of the sealing head 11, and the roller ring 4 are rotated.
5, a mounting block 47 fixed to the adapter 31,
Bearing case 5 that engages with the mounting block 47
7, the leaf spring lever 81 attached to the bearing case 57, the thread roller 93 and the skirt roller 95 provided at the lower end of the leaf spring lever 81 are simultaneously driven to rotate in the predetermined direction. In this state,
When the ceiling head supporting means 4 supported by the vertically movable support body 2 descends, the rotation direction of the sealing head support means 4 is restricted by the central shaft 8 fixed to the support body 2, and the center shaft 61 is in a relatively stopped state. Lower cap 75
Comes into contact with the upper surface of the non-tightened cap 39 placed on the container 37 and pushes it with the biasing force of the head spring 65. Further, since the container 37 is also in the rotation stopped state, the relative rotation of the cap 39 with respect to the rotating portion of the sealing head 11 is reliably prevented.

By the descending stroke of the sealing head 11 which is subsequently performed, the roller ring 45 in the rotating state is rotated.
The roller 51 at the bottom of the leaf spring 81 descends and pushes the leaf cam 83 of the leaf spring lever 81 which is in the synchronous rotation state but does not descend, so that the sled roller 93 and the skirt roller 95 provided at the lower end of the leaf spring lever 81 are pushed inside as shown in FIG. Move to and start the tightening operation. It should be noted that what is indicated by a chain double-dashed line in FIG. 3 is a state in which the roller 51 is not lowered and is not acting on the plate cam 83 of the plate spring lever 81. Here, in the winding tightening operation, as shown by the solid line, the thread roller 93
Acts on the peripheral wall of the cap 39 and forms a female screw on the peripheral wall of the cap 39 corresponding to the male screw formed on the mouth and neck of the container 37. At the same time, the skirt roller 95 acts on the lower end of the skirt of the cap 39, bends the lower end of the skirt inward, and engages with the engaging jaw formed on the mouth and neck of the container 37. Thread roller 93 and skirt roller 9
Since the leaf spring lever 81 that operates 5 is flexible in the moving direction, it is possible to cope with the dimensional error of the container neck. Also, the sealing head 11 rotates by a predetermined angle,
After the sealing work is completed, the support body 2 is raised, the roller 51 is separated from the plate cam 83 of the plate spring lever 81, the sled roller 93 and the skirt roller 95 are moved to the outside,
By further raising the support body 2, one sealing step is completed, the container 37 is discharged, and the next step is carried out.

FIG. 4 shows the position of the plate cam 83 which is simultaneously adjusted when the position of the roller 51 by the position adjustment of the roller ring 45 is changed from the position X1 (shown by the chain double-dashed line) to the position X2. . Roller 51 for leaf spring lever 81
Is the thread roller 93 or the skirt roller 95.
, The pressing force of the roller that processes the cap 39 increases. Further, the shape of the plate cam 83 is thickened downward, and the roller 51 is set so as to push the thick portion of the plate cam 83, whereby the displacement of the plate spring lever 81 is increased and the thread roller 93 or the skirt roller 95 is processed and pushed. You can also increase the power.

[0022]

As described in detail above, according to the present invention, the swing lever in the conventional sealing head is replaced with the lever having the leaf spring structure, so that the operating mechanism is simplified and the cost can be reduced. The leaf spring lever is
Since it has flexibility in the moving direction, the operating range of the lever has flexibility and can cope with variations in the size of the container neck.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a sealing head according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the sealing head shown in FIG.

FIG. 3 is a view of a sealing head according to an embodiment of the present invention.
FIG. 6 is a vertical sectional view showing an operating state different from that of FIG.

FIG. 4 is a vertical sectional view showing a moving position of a roller of the sealing head in FIG.

FIG. 5 is a vertical sectional view of a conventional sealing head.

[Explanation of symbols]

 2 Supporting Body 4 Sealing Head Supporting Means 8 Center Shaft 10 Rotating Member 11 Sealing Head 12 Bearing Housing 31 Adapter 30, 32, 34, 36 Spacer 33 Bolt 41 Bushing 43 Sealing Head Connecting Nut 45 Rolling Ring 47 Mounting Block 49 Spring Bearing 51 Roller 53 Horizontal eccentric shaft 55 Bolt 57 Bearing case 59 Bearing 61 Center shaft 61a Square shaft 61c Long hole 65 Head spring 69 Thrust bearing 73 Detection shaft 75 Cap retainer 77 Ring 81 Leaf spring lever 83 Plate cam 91 Support block 93 Thread roller 95 Skirt roller 97, 99 sleeve

Claims (1)

[Claims] 1. A rotating member having a central shaft fixedly supported by an elevating and lowering support body, and a connecting means rotatably mounted on the outer side of the central shaft so that a sealing head can be easily attached and detached. A cap sealing head coupled to the lower part of the sealing head supporting means constituted by the above, and an adapter connected to the rotating member of the sealing head supporting means and having an internal thread formed on the inner cylindrical surface thereof; Rolling ring having a plurality of mounting blocks mounted on the bottom surface of the cylinder evenly distributed, and a male thread on the outer peripheral surface to be screwed into the female thread of the adapter, and having four elongated holes equally distributed on the cylindrical surface. And four freely rotatable rollers mounted on the lower part of the roller ring evenly distributed on the circumference, and a circle for engaging the mounting block and sliding up and down. A bearing case having a plurality of vertical grooves evenly arranged on the circumference, and a bearing case supported by the bearing case so that the upper end shaft can slide axially on the central axis of the sealing head supporting means. Then
Between the center shaft having the cap retainer at the lower end and the center shaft and the spring receiver fixed to the lower part of the mounting block, the center shaft is urged so as to be pushed down and installed through the thrust bearing. Head spring, and a pair of leaf spring levers that are symmetrically attached to the outer periphery of the bearing case, have a plate cam that can adjust the vertical position in the middle part, and have a thread roller at the lower end, and the outer periphery of the bearing case. It is installed symmetrically with the leaf spring lever at a position rotated by 90 degrees, and is equipped with a pair of leaf spring levers that have a leaf cam that can adjust the vertical position in the middle and a skirt roller at the lower end. The cap retainer at the lower end of the center shaft, which is in the rotation stopped state, is the After pressing the top, the subsequent lowering stroke causes the lower roller of the rotating roller ring to rotate in the same manner and pushes the plate cam on the leaf spring lever to move the thread roller and the skirt roller inward. A cap sealing head characterized by being moved to and tightening the cap.