JPH031430Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The invention relates to a capping machine that seals the opening of a container with a lid, and more specifically, the invention relates to a capping machine that seals the opening of a container with a lid. The present invention relates to a cap tightening machine that is clamped between members.

``Prior Art'' Conventionally, this type of capping machine has a supporting member and a clamping member disposed facing each other on the inside and outside of a sealing portion between a container and a lid body, and is operated by an actuating device. A lid tightening machine is known in which a clamping member is moved forward toward the supporting member via an operating member to clamp the sealing portion, and the sealing portion is bonded by heat, adhesive, or the like.

``Problem that the invention seeks to solve'' However, if the container is manufactured from a material such as paper and has a joint on its outer periphery for manufacturing the container, the thickness of the container may be reduced at the joint. As a result, when the seal portion is sandwiched between the support member and the clamping member, the clamping force becomes uneven between the joint portion and other portions, resulting in an incomplete seal.

"Means for Solving the Problem" In view of such circumstances, the present invention comprises a driving-side operating member for operating the operating member, and a driven-side operating member to which the clamping member is attached,
The driven-side actuating member is connected to the drive-side actuating member so as to be relatively displaceable in the advancing and retracting direction of the holding member, and the driven-side actuating member is biased and held in a forward position with respect to the driving-side actuating member, and further, the holding member is attached to the driven-side actuating member so as to be swingable about a direction substantially parallel to the axial direction of the container.

"Operation" According to the above configuration, the driven side actuating member to which the clamping member is attached is biased and held in the forward position with respect to the driving side actuating member, so that as the driving side actuating member moves forward, the driven side actuating member and When the clamping members are moved forward together and the clamping member is pressed against the seal portion of the container and the drive-side actuating member is further advanced, the clamping member is moved by the urging force that urges the driven-side actuating member. Therefore, by appropriately setting the biasing force, the clamping member can be crimped to the seal portion of the container with an appropriate pressure force.

In addition, since the holding member is attached to the driven actuating member so as to be able to swing around a direction substantially parallel to the axial direction of the container, the paper container can be manufactured, for example, in the circumferential direction of the paper container. Even if the clamping member has a convex part such as a joint part for sealing, the clamping member can follow the shape of the outer peripheral surface of the container, and therefore the pressing force in the circumferential direction of the sealing part can be kept as constant as possible. can be maintained to provide a reliable seal.

``Embodiment'' The present invention will be described below with reference to the illustrated embodiment. In FIG. The outer periphery of container 2 is curved to have an inverted U-shaped cross section, and by fitting the upper end of container 1 inside the inverted U-shape and heating the seal portion 3, the two can be integrated. This allows it to be placed in close contact with the

An air cylinder device 6 is fixed to the machine frame 5 disposed above the container 1 so as to face vertically downward, and the upper end of the outer cylinder 10 is fixed to the lower end of the piston rod 7 of the air cylinder device 6. . This outer cylinder 10
is slidably fitted into a holder 11 fixed to the lower machine frame 5, and the lower end surface of the upper large diameter portion 10a comes into contact with the upper end of the holder 11, so that the lower end position is regulated. It's getting old.

An inner cylinder 12 is slidably fitted inside the outer cylinder 10, and a spring 13 is elastically mounted between the outer cylinder 10 and the inner cylinder 12. The large diameter portion 12 of the inner cylinder 12 is attached to the provided stepped portion 10c.
The lower end surface of a is brought into contact.

A stopper member 14 is provided on the upper outer periphery of the inner cylinder 12.
A slit 1 is formed in the outer cylinder 10 by fixing the
5, and when the inner cylinder 12 is lowered by a predetermined amount together with the outer cylinder 10, the stopper member 14 is brought into contact with the holder 11, and the inner cylinder is moved while allowing the outer cylinder 10 to descend. 12 can be stopped from descending. Furthermore, a support member 16 that supports the inner peripheral surface of the seal portion 3 is attached to the lower end surface of the inner cylinder 12, and a heater 17 is provided above the support member 16 so that the support member 16 can be heated.

A plurality of mounting portions 18 (FIG. 2) are provided at equal intervals in the circumferential direction on the outer periphery near the center of the inner cylinder 12, and each mounting portion 18 is provided with a clamping member disposed on the outer peripheral surface side of the seal portion 3. The member 19 is attached to the support member 16
The actuating device 2 is moved forward toward the target and the seal portion 3 is held between the supporting member 16 and the holding member 19.
0 is set.

Each actuating device 20 has an upper drive-side actuating member 21 that is actuated in conjunction with a cam surface 10b formed on the lower outer periphery of the outer cylinder 10, and this drive-side actuating member 21 is capable of relative displacement therebetween. The holding member 19 is attached to a lower member 23 that constitutes a part of the driven actuating member 22. The intermediate portion of the driving-side operating member 21 and the upper end portion of the driven-side operating member 22 are swingably attached to the mounting portion 18 by a common pin 24.

An outer cylinder 1 is provided at the upper end portion of the drive-side operating member 21.
A roller 25 that rolls on the cam surface 10b of 0 is attached, and an annular spring 26 disposed so as to surround the outer periphery of the inner cylinder 12 is attached to each drive side actuating member 2.
1, that is, above the pin 24, and the contracting force of the spring 26 causes the roller 25 of each actuating device 20 to be connected to the cam surface 1 of the outer cylinder 10.
It is constantly in bullet contact with 0b.

On the other hand, the driven side actuating member 22 is formed into a roughly U-shape from the upper part to the center thereof, and the driving side actuating member 21 is disposed between mutually parallel arm portions 22a forming the U-shape. Its upper end is pivotally supported by the pin 24. In the upper and lower parts of the pin 24,
Bridge portions 22b and 22c connect the pair of arm portions 22a on the inner cylinder 12 side relative to the drive-side operating member 21;
is provided, and a disc spring 28 is elastically mounted between the lower bridge portion 22c and the drive-side actuating member 21, and the driven-side actuating member 22 and the driving-side actuating member 21 are biased and rotated in the direction of separating them from each other. At the same time, the upper bridge portion 22b is brought into contact with a screw 29 screwed into the upper portion of the drive-side operating member 21 to stop its rotation.

Therefore, when the outer cylinder 10 is moved up and down with respect to the inner cylinder 12, the cam surface 10b allows the driving side actuating member 21 to swing around the pin 24, and the driven side actuating member 22 can also be made to swing integrally with the drive-side actuating member 21 about the pin 24.

By the way, the disc spring 28 is connected to the drive side operating member 2.
It is fitted onto the outer periphery of a screw 30 screwed into the screw 30 and elastically mounted between the head of the screw 30 and the driven-side actuating member 22, and can be attached by adjusting the amount of tightening of the screw 30. It allows you to adjust your forces. The tip of this screw 30 is connected to the driven side actuating member 2.
2 is loosely fitted into the hole formed in 2, so that the relative operation of the drive-side actuating member 21 and the driven-side actuating member 22 against the disc spring 28 is not inhibited.

Further, by adjusting the amount of tightening of the screw 29 that contacts the upper bridge portion 22b, the relative operating position between the driving side operating member 21 and the driven side operating member 22 can be adjusted. Thereby, the distance between the holding member 19 supported by the lower lower member 23 constituting the driven side operating member 22 and the support member 16 can be adjusted, and the pressure force between them can be adjusted.

Lower member 23 below the driven side operating member 22
is formed into a fan shape as shown in FIG. 3, and the outer peripheral portion of the fan-shaped holding member 19 is fitted into a groove provided horizontally on the inner peripheral surface side.
By pivotally supporting the central portion of the clamping member 19 with a bolt 31, the clamping member 19 can swing freely around a direction substantially parallel to the axial direction of the container 1. The shape of the outer peripheral surface can be imitated.

Note that the fan-shaped holding member 19 is the supporting member 16.
Although four are arranged around the , it is not necessarily limited to this.

In the above configuration, in the non-operating state shown in the figure, the outer cylinder 10 is located at the rising end position, and the inner cylinder 12 is moved toward the stepped portion 10 of the outer cylinder 10 by the elastic force of the spring 13.
It is pressed against c. Further, the rollers 25 of each drive-side actuating member 21 fixed to the inner cylinder 12 are fixed to the spring 2
6, the holding member 19 is in elastic contact with the lower portion of the cam surface 10b of the outer cylinder 10, and the holding member 19 forms a required distance between it and the opposing support member 16.

In this state, when the container 1 whose upper end is fitted inside the inverted U-shaped portion of the lid 2 is intermittently conveyed to a position directly below the air cylinder device 6 and stopped, the container 1 is removed by the air cylinder device 6. The cylinder 10 and the inner cylinder 12 are lowered together, and the seal portion 3 of the container 1 and the lid 2 is secured to the clamping member 19 and the support member 16.
It will be inserted relatively within 〓 between and.

When the seal portion 3 is relatively inserted into the space, the stopper member 14 provided on the inner cylinder 12
comes into contact with the holder 11 and its descent is stopped, so the outer cylinder 10 descends while compressing the spring 13 against the inner cylinder 12, and as a result, the cam surface 10b of the outer cylinder 10
The upper end portion of each drive-side operation member 21 is pushed outward via the roller 25 above each drive-side operation member 21 .

When the upper end of the drive-side actuating member 21 is pushed outward and the lower end of the drive-side actuator 21 is pushed inward, the clamping member 19 is moved to the support member via the driven-side actuator 22. 16, and the seal portion 3 is held between the holding member 19 and the support member 16, so that the lid 2 is brought into close contact with the opening of the container 1 by the heat from the heater 17.

At this time, since the driven side actuating member 22 is biased and held in the forward position relative to the driving side actuating member 21, the holding member 19
Even if the drive-side actuating member 21 is further advanced, the clamping member 19 is crimped to the seal portion 3 of the container 1 by the urging force of the disc spring 28 that urges the driven-side actuating member 22. Therefore, by appropriately setting the biasing force, the holding member 19 can be crimped onto the seal portion 3 with an appropriate crimping force.

In addition, since the clamping member 19 is attached to the driven actuating member 22 so as to be able to swing around a direction substantially parallel to the axial direction of the container 1, the holding member 19 can move the container 1 in the circumferential direction of the container 1. Even if the holding member 19 has a convex part such as a joint part for manufacturing, the container 1
It is possible to imitate the shape of the outer circumferential surface of the seal portion 3, and therefore it is possible to maintain the pressing force in the circumferential direction of the seal portion 3 as constant as possible to provide a reliable seal.

Thereafter, when the outer cylinder 10 is raised by the air cylinder device 6, the rollers 25 of each drive-side actuating member 21 that are engaged with the cam surface 10b on the lower outer periphery of the outer cylinder 10 move radially inward, so that the holding member 19 The distance between the support member 16 and the support member 16 increases, and the sealed container 1 becomes separated from both members 16 and 19. Then, when the outer cylinder 10 is returned to the ascending end position by the air cylinder device 6, the sealed container 1 is carried out from the lower part of the air cylinder device 6 and a new container 1 is supplied. The operation is repeated.

"Effects of the Invention" As described above, according to the present invention, even if the sealing part has a convex part such as a joint part, it is possible to reliably seal the container.

[Brief explanation of drawings]

Fig. 1 shows an embodiment of the present invention, with the right side of the center line showing the non-operating state and the left side a sectional view showing the operating state, Fig. 2 a side view of the main parts of Fig. 1, and Fig. 3 FIG. 3 is a sectional view taken along the - line in FIG. 2; 1... Container, 2... Lid, 3... Seal part, 6
... Air cylinder device, 5 ... Machine frame, 10 ... Outer cylinder, 12 ... Inner cylinder, 14 ... Stopper member, 16
. . . Support member, 17 . . . Heater, 19 . . . Holding member, 20 .

Claims (1)

[Claims for Utility Model Registration] A supporting member located inside the sealing portion between the container and the lid, a holding member located outside the sealing portion opposite to this supporting member, and the above-mentioned A lid tightening machine comprising an actuating device that advances a holding member toward a supporting member and pinches the seal portion between the holding member and the supporting member, a drive-side actuating member that actuates the actuating member; and a driven-side operating member to which the clamping member is attached, and the driven-side operating member is connected to the drive-side operating member so as to be relatively displaceable in the advancing and retreating direction of the clamping member, and the driven-side operating member is connected to the driving-side operating member. 1. A lid tightening machine, wherein the clamping member is biased and held in a forward position with respect to an operating member, and the holding member is attached to the driven-side operating member so as to be swingable about a direction substantially parallel to the axial direction of the container.