JPS6147350A - Manufacture of cap with pilfer-proof member - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a bottle filled with soft drinks, etc.

The present invention relates to a method for producing a cap with a pilfer-proof member that allows confirmation of whether the cap is unopened or opened.

[Prior art] As a cap for a bottle filled with soft drinks, etc., for the purpose of guaranteeing the freshness and safety of the contents.

A cap with a pilfer-proof member is known that allows confirmation of whether a bottle is unopened or opened.

Conventionally, as this type of cap with a pilfer-proof member, a cap with a pilfer-proof member 1 as shown in Fig. g7 is known. This conventional cap 1 with a pilfer-proof member includes a cap body 3 that is screwed onto a neck 2a of a bottle 2, a top plate 3a of the cap body 30, and a bottle spout 2.
The seat liner 4 and the cap body 3 interposed between the
A pilfer-proof member 5 is interposed between the lower end 3b and the neck 2a, and the pilfer-proof member 5 is engaged with a groove 3C formed inside the lower end 3b. An attachment ring portion 5a, a pilfer-proof ring portion 5b formed on the neck portion 2a and engaged with the lower surface of the fc annular protrusion 2C, and a pilfer-proof ring portion 5b that is connected between the attachment ring portion 5a and the pilfer-proof ring portion 5b. Connecting part 5
It is composed of C. Then, when removing the cap,
When the cap body 3 is moved upward, the cap body 3
■The attachment ring part 5a and the annular protrusion part 2c of the bottle 2 engaged with the groove part 3C! The pilfer-proof ring part 5b is pulled together, and the connecting part 50 is cut.
so that you can confirm that the cap has been removed.
g.

This cap 1 with a pilfer-proof member is made by separately molding a cap body 3, a seat liner 4, and a pilfer-proof member 5, and first attaches the seat liner 4 to the inside of the top plate portion 3a of the cap 3, and then The attachment ring portion 5a of the pilfer-proof member 5 is inserted into the groove portion 3 of the cap body 3.
Manufactured by engaging C.

[Problem that the invention seeks to solve]

However, in the conventional manufacturing method of the cap with a pilfer-proof member described above, the sheet liner 4 and the pilfer-proof member 5 are molded separately and attached to the cap body 3 separately, so the molding There was a problem in that it required a large number of man-hours and assembly man-hours. The pilfer-proof member 5, which is made of an annular elastic member, has a problem that it has low rust resistance, is difficult to hold and position, requires some experience in assembly, and is therefore difficult to mechanize assembling. .

[Ninth way to solve the problem]

This invention is a means for solving the above problems, and is manufactured by the following method.

First, a sheet liner is integrally formed inside the pilfer-proof member via a connecting portion. Next, the attachment ring portion of this integrally molded pilfer-proof member with companion sheet liner is engaged with the inner groove portion of the lower end portion of the cap body. Then, the connecting portion between the pilfer-proof member and the seat liner is cut, and the seat liner is attached to the inside of the top plate of the main body.

〔Example〕

This embodiment relates to a manufacturing method for making a cap 10 with a pilfer-proof member shown in FIG. 3, which has almost the same shape as the conventional cap 1 with a pilfer-proof member. The bottom of the liner is integrally formed, and the 411FgL is installed.

1 to 6 are diagrams showing an embodiment of the present invention. In these figures, reference numeral 11 indicates a cap body, and reference numeral 31 indicates a pilfer-proof member with a sheet liner.

First, before explaining the manufacturing method of this example, 7 mg
This will be explained with reference to FIGS. 4 to 6.

As mainly shown in FIG. 4, the cap body 11 is made of synthetic resin and consists of a disk-shaped top plate part 12 and a cylindrical part 13 extending downward from the peripheral edge of the top plate part 120.

A seat liner fitting part 14 having a slightly smaller diameter than the outer diameter of a seat liner 38 (described later) is formed on the inner peripheral surface of the cylinder part 13 adjacent to the top plate part 12, and a seat liner fitting part 14 is formed in the middle of the inner peripheral surface of the cylinder part 130. A female threaded portion 15 is formed to be screwed into the male threaded portion of the neck of the bottle. A knurling 16 is formed on the outer peripheral surface of the cylindrical portion 13. The outer circumferential surface of the lower end 17 of the cylindrical portion 13 is enlarged in diameter n1 to approximately the same diameter as the peak of the knurling 16, and the inner circumferential surface of the lower end 17 is similarly enlarged in diameter. A flange 18 protruding radially inward is formed on the lower end edge of the cylindrical portion 13, thereby forming an annular recess 19 on the inner circumferential surface of the lower end portion 17 of the cylindrical portion 13. A large number of protrusions 20 are provided at the upper end of this annular recess 19 at equal intervals in the inner circumferential direction, so that the annular recess 19 engages with a mounting ring portion 32 of a pilfer-proof member 31 with a seat liner, which will be described later. Two matching grooves are formed.

On the other hand, the pilfer-proof member 31 with sheet liner is
The seat liner is integrally molded to the Bill Far pull member, and as shown in detail in Figures F44 to 6, there is a mounting ring part 32, and a bridge 33 and a stem 34 are attached to this mounting ring part 32. It consists of a pilfer-proof ring part 36 connected via a connecting part 35 made up of, and a tote liner 38 connected to this pilfer-proof ring part 36 through a connecting part 37,
It is integrally molded from soft synthetic resin.

The attachment ring portion 32 has an outer circumferential surface tapered downwardly and bidirectionally outward, and a vertical inner circumferential surface with a trapezoidal cross section, and has the largest outer diameter. The diameter of this portion is approximately the same as the inner diameter of the groove portion 21 of the cap body 11.

On the inner circumferential surface of this attachment ring portion 32, large diameter stems 34 are provided at three locations equally spaced around the circumference so as to extend downward. The inner peripheral surface of fc1, and each stem 34.
A narrow-diameter bridge 33 extending downward is provided so as to equally divide the space between the holes 34 into 5. In addition, the attachment ring part 32
A pilfer-proof ring portion 36 is provided below and coaxially with the pilfer-proof ring portion 36 at a predetermined interval.

It is connected to the lower part of 34b and the lower end of the bridge 33, and is held below the attachment ring part 32.

The pilfer-proof ring portion 36 has a substantially V-shaped cross section and is composed of a ring body 39 and a locking tongue piece 40. The ring body 39 is connected to the stem 34 and the bridge 33, and its inner diameter is larger than the outer diameter of the narrow annular projection formed on the neck of the bottle with which it fits.

A portion of the ring body 39 that is connected to one side surface 34a of the stem 34 is formed thin, and this portion serves as a cutting portion 41 that is easy to cut. At the lower end of the t1 ring main body 39, there are locking tongue pieces 4 at each interval between the stems 34 and 34.
0 is set consecutively.

This locking tongue piece 40 is provided so as to gradually incline upward from the lower end of the ring body 39, and the inner diameter of its upper end portion is formed in the neck of the bottle to which it is fitted. The outer diameter of the lower part of the annular protrusion is approximately the same size as the outer diameter of the lower part of the annular protrusion. The locking tongue piece 40 and the ring body 39 have unevenness formed on their opposing inner surfaces, respectively.

On the inner circumferential surface of the upper end of the locking tongue piece 40, connecting portions 37 having a small diameter and extending radially inward are provided at intervals in the circumferential direction. Further, a seat liner 38 coaxial with the locking tongue piece 40 is provided at a predetermined distance inward in the radial direction of the inner circumferential surface of the upper end portion of the locking tongue piece 40, and this seat liner 38 is connected to the connecting portion 37. is maintained. The seat liner 38 is disc-shaped, and its outer diameter is equal to the seat liner fitting portion 1.
It is formed slightly larger than the inner diameter of No. 4.

Next, a first method for assembling the cap 10 with a pilfer-proof member from the cap main body 11 configured as described above and the pilfer-proof member 31 with a sheet liner will be described.
This will be explained with reference to FIGS.

First, as shown in FIG. On the other hand, the pilfer-proof member 31 with a sheet liner is placed in a coaxial position above the cap body 11 by the holding member 52,
Hold with the attachment ring part 32 facing down. Holding member 5
2 is a suction cup-shaped member whose outer diameter is slightly smaller than the outer diameter of the seat liner 38 and has a recess formed in the center of its lower surface, and holds the seat liner-attached pilfer-proof member 31 by vacuuming. .

The sheet liner-attached pilfer-proof member 31 held in this manner is pushed down along with the cap body 11 in the direction of the arrow in the drawing of the brush 1. Then, the attachment ring portion 3z is connected to the cap body 11 so that the seven tapered outer circumferential surfaces thereof are connected to each other.
The flange portion 18 is fitted so as to be in contact with the inner peripheral surface of the flange portion 18,
Then, it is engaged with the groove portion 21 as shown in the IEZ diagram. Here, the pilfer-proof member with sheet liner 3
1 is held in a state where it cannot be moved either upward or downward because its attachment ring portion 32 and groove portion 21 are engaged. Next, in this state, the holding member sz′f:gz
When the seat liner 38 is pushed down further in the eight direction of the arrow in the figure, thereby applying a downward force to the seat liner 38, the connection portion 37 between the seat liner 38 and the pilfer-proof ring portion 36 is severed. Furthermore, the seat liner 38 is inserted toward the top plate part 12, and is fitted into the seat liner fitting part 14 having a slightly smaller diameter than the outer diameter of the seat liner 38 as shown in FIG. 3, and is fixed.

In addition, in the assembly method as described above, each deformed shape and strength are set as follows. The axial force required to fit the tab and attachment ring portion 32 into the groove portion 21 = l−X, the connection portion 35 between the attachment ring portion 32 and the pilfer-proof ring portion 36 does not buckle. Assuming that the maximum axial force allowed for Y1 is 2 and the force required to break the connection 37 between the sheet liner 3B and the pilfer-proof ring 36 is 2, then x<z<y. The shape and diameter of the outer peripheral surface of the attachment ring portion 32 and the inner peripheral surface of the flange 18 are set so that the connecting portion 3
5 and the strength of the connecting portion 37 are set.

The cap 10 with a pilfer-proof member assembled in this manner is attached to the neck of a bottle as shown in the fXr diagram, similarly to the cap 1 with a pilfer-proof member. When the cap moves upward, the locking tongue catches on the annular protrusion formed on the neck of the bottle, severing the bridge and cut section, making it possible to confirm that the bottle has been opened. ing.

As described above, this Yuzukuri method connects the seat liner 3B to the pilfer-proof ring portion 36 and the attachment ring portion 3.
Compared to the method of molding 2 separately and assembling them separately, the molding and assembly man-hours can be shortened, and the pilfer-proof member 31 with a di-turner is rigid and can be easily held and positioned by a machine. Therefore, mechanization of assembly is possible.

In the above embodiment, the sheet liner 38 is formed into a disk shape with a constant thickness, but the sheet liner 38 is formed into a disc shape with a constant thickness, and the sheet liner 38 is in contact with either the inside or outside of the bottle mouth, or both. A ring-shaped embankment may also be provided. Furthermore, in the above embodiment, the seat liner 38 is fitted into the seat liner fitting portion 14 having a diameter slightly smaller than the outer diameter of the seat liner 38, but the seat liner 38 is bonded to the inside of the top plate portion 12. It may be fixed with an agent.

[Effects of the Invention] According to this invention, the pilfer-proof member and the seat liner are integrally molded, and the mounting ring portion of the integrally molded pilfer-proof member with the seat liner is engaged with the groove portion of the cap body. Since the sheet liner is then cut from the pilfer-proof member and attached to the inside of the top plate of the cap body, the molding and assembly man-hours are reduced, and the pilfer-proof member with the sheet liner is The advantages are that it is easy to hold and position, and it is easy to mechanize assembly.

[Brief explanation of the drawing]

W, Figures 1 to 6 show an embodiment of the present invention, Figures 1 to 3 are sectional views showing a method of assembling a cap with a pilfer-proof member of this embodiment, and Figure 4 is a cap body. 5 is a plan view showing a pilfer-proof member with a sheet liner, FIG. 6 is a perspective view showing the main parts, and FIG. 7 is a conventional pilfer-proof member. FIG. 3 is a sectional view showing a state in which the cap with a proofing member is attached to the neck of the bottle. 1...Cap with pilfer-proof material, 2
... Bottle, 2a ... Neck, 21) ...
... Bottle mouth, 2c ... Annular protrusion, 3 ...
...Cap body, 3a...Top plate part, 3b...
...Lower end, 3c...Groove, 4...
- Strainer, 5... Pilfer proof member,
5a... Attachment ring part, 5b... Pilfer proof ring part, 5c... Connection part, 1
0...Cap with pilfer-proof material, 1
DESCRIPTION OF SYMBOLS 1...Cap body, 12...Top plate part, 15...Female thread part, 17...Lower end part, 21...Groove part, 31...Pilfer proof member with seat liner, 32...Mounting ring part, 35...Connecting part, 36...
- Pilfer-proof ring part, 37... Connection part, 38... Seat liner.

Claims (1)

[Claims] A cap body that is screwed onto the neck of the bottle, a sheet liner that is interposed between the top plate of the cap body and the bottle mouth, and a pill that is interposed between the lower end of the cap body and the neck of the bottle. The pilfer-proof member includes an attachment ring portion that engages with a groove on the inner circumferential surface of the lower end of the cap body, and a lower surface of an annular protrusion formed on the neck of the bottle. It is formed from a pill-proof ring part that is attached to the neck of the bottle, and a connection part that is easy to cut and is connected between the attachment ring part and the pill-proof ring part. so that when the cap is raised relative to the neck of the bottle, the connection between the attachment ring part engaged with the cap body and the pilfer-proof ring part engaged with the annular projection of the bottle is torn apart. In the method for manufacturing a cap with a pill-proof member configured, a seat liner is integrally molded inside the pill-proof member via a connection part that is easy to cut, and this integrally-molded pill-proof cap with a seat liner is manufactured. The attachment ring portion of the member is engaged with the groove on the inner peripheral surface of the lower end of the cap body, and then the connection between the pilfer-proof member and the seat liner is cut, and the seat liner is attached to the inside of the top plate of the cap body. A method for manufacturing a cap with a pilfer-proof member, characterized in that the cap is attached to a cap.