JPS63218090A - Cap fixture for tube vessel - 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 [Field of Industrial Application] The present invention relates to an apparatus for attaching a cap to a tube container.

[Prior Art] Tube containers used for toothpaste, medicines, cosmetics, etc. are generally constructed as shown in FIG.

That is, 1 in the figure is a tube container main body, and a shoulder portion 2 is welded to one end of the tube container main body 1. A cap 3 is attached to this shoulder portion 2. Recently, many caps 3 are of the so-called mirror hinge type as shown in FIG.

This cap 3 is composed of a cap body 4 that is screwed onto the spout part of the shoulder part 2, and a lid part 6 that is attached to this cap body 4 via a thin hinge part 5. When using the device, the lid portion 6 is opened and closed.

Such tube containers are shipped to manufacturers of drugs, cosmetics, etc. in the state shown in Figure 1, that is, with the cap 3 attached and the bottom end of the tube container main body 1 open. After the manufacturer fills the contents from the bottom opening, the bottom of the tube container body is sealed.

Therefore, when manufacturing such a tube container, it is necessary to attach the cap 3 to the tube container body 1. Conventionally, when attaching this cap, a mandrel is inserted through the bottom opening of the tube container body to hold the tube container body, the cap is gripped by a chuck mechanism, and the cap is pressed against a part of the shoulder. While rotating the cap, the cap was screwed on. Also,
A chuck mechanism is also provided at the base of the mandrel, and this chuck mechanism grips the bottom of the tube container body to prevent the tube container body from rotating.

However, in the conventional method as described above, a chuck mechanism must be provided for each mandrel. Generally, a large number of these mandrels are provided on a rotary table or the like, and if a chuck mechanism is provided for each of these mandrels, the entire device becomes complicated. Furthermore, in order to open and close these chuck mechanisms on the rotary table, these chuck mechanisms must be opened and closed via mechanical means such as cam rails provided on the fixed member side of the device, making the structure even more complicated. Become.

[Problem 4F to be Solved by the Invention The present invention has been made based on the above-mentioned circumstances, and provides a cap mounting device for a tube container that has a simple IP structure and is highly reliable.

[Means for solving the problems and their effects] The present invention has the following features:
A cap mounting head is provided near the mandrel that holds the tube container, and this cap mounting head is provided with a chuck mechanism for gripping and screwing the cap, and this cap mounting head is provided with a chuck mechanism that abuts against the circumferential surface of the tube container body. A tube holding arm is provided to prevent the tube from rotating.

Therefore, it is possible to prevent the tube container body from rotating when the cap is screwed on. There is no need to provide a chuck mechanism for each mandrel,
Moreover, since the cap tube head is provided on the fixed side of the apparatus, the opening/closing mechanism of the tube holding arm is also simplified.

[Example] The present invention will be described in detail below with reference to FIGS. 2 to 6. This device is a device for attaching a mirror hinge type cap 3 as shown in FIG. FIG. 2 shows the entire cap mounting device. Reference numeral 11 in the figure is the main body of this device, and a rotating table 12 is provided on this main body. This rotary table is configured to be intermittently rotated in a vertical plane about a horizontal axis. On the outer periphery of this turntable 12, there are four sets of two-piece mandrels 13,
A total of eight pieces are provided to protrude in the radial direction. The rotary table 12 is configured to be rotated intermittently by 90'', and each set of mandrels 13 is configured to stop at horizontal and vertical positions, respectively.

This device is provided with a tube container main body supply mechanism 16. The tube container main body 1 is conveyor 14
from this column 15 to the tube body supply mechanism 16.
They are inserted two by two into the horizontal mandrels 13 and held by these mandrels 13.

Further, a cap mounting head 17 is provided above and near the position where the mandrel 13 stops vertically upward. Further, the cap 3 to be attached is supplied from the hopper 19 via the parts feeder 18 and the chute 20,
Two caps are supplied to the cap mounting head 17 by the cap supply mechanism 21, and the cap mounting head 17
The tube container body 1 is screwed onto the tube container body 1 held by the mandrel 13 which is stopped vertically upward.

Then, the tube container main body 1 with the cap 3 attached is removed from the mandrel 13 by the tube discharge mechanism 22 at the position where the mandrel 13 stops in the horizontal direction.
Sent to the next process. In addition, this tube discharge mechanism 22
A light source 24 and a photodetector 23 are provided at the position where the light source 24 and the photodetector 23 are provided.

The photodetector 23 detects the outline of the cap portion of the tube container, thereby determining whether the cap 3 is completely screwed on and whether the lid portion 6 of the cap 3 is open. be inspected.

Note that 25 is a control section of the device, which houses electric circuits and the like that control the operation of this device.

Further, 26 is an operating section of this device.

Next, the structure of the cap mounting head 17 described above will be explained with reference to FIGS. 3 to 6. Reference numeral 33 in the figure indicates this head body, and this head body 33 is disposed above the mandrel 13 that is stopped vertically upward.

The head body 33 is provided with chuck rotation mechanisms 32 corresponding to the two mandrels 13, respectively. A motor, a speed reducer, etc. are accommodated in the chuck rotation drive mechanism 32, and a chuck mechanism 31 is provided at the lower end of each rotating shaft.

Then, a cap supply mechanism 21 is provided from the chute 20.
The caps 3 are taken out two by two, and these caps 3 are conveyed to just below the chuck mechanism 31.

These caps 3 are gripped by the chuck mechanism 31, and then the cap supply mechanism retreats from below the chuck mechanism 31, and then the chuck mechanism 31 is lowered and the rotation drive mechanism 32 These chuck mechanisms 31 are rotated, and the cap 3 is screwed onto the tube container body 1.

Furthermore, a pair of rotating members 35 are provided at the lower end of the head main body 33 at the front and rear with the rotational drive mechanism in between, and these rotating members 35 are rotatably supported by a shaft 34. There is. Two tube holding arms 36 are provided to protrude downward from each of these rotating members 35, and a holding member 37 is attached to the lower end of each of these tube holding arms 36. The rotating member 35 is rotated by an opening/closing drive mechanism (not shown) such as an air cylinder built into the head main body 33,
The tube holding arm 36 opens and closes in the direction of the arrow in FIG. It is configured to prevent the main body 1 from rotating.

Further, the chuck mechanism 32 described above is configured as shown in FIG. That is, 51 in the figure is a chuck body, and this chuck body 51 is provided with a plurality of chuck arms 52.

Rubber contact members 53 are attached to the tips of these chuck arms 52, respectively. Also,
These chuck arms 52 are supported by shafts 55 so as to be rotatable in the radial direction. These chuck arms 52 are urged in the opening direction by a garter spring 56. In addition, these chuck arms 5
Cam rollers 57 are provided at the inner ends of the rollers 2, respectively. Further, a piston 59 is provided inside the chuck main body 51 so as to be slidable in the axial direction.

A conical cam portion 5 is provided at the end of the piston 59.
8 is formed. A pressure chamber 60 is formed on one side of the piston 59, and a pressure supply passage 61 communicates with the pressure chamber 60. In addition, this chuck body 51
A cap abutting member 62 is provided at the center of the distal end surface.

In such a chuck mechanism 32, when pressure such as air pressure is not supplied to the pressure chamber 60, the chuck arm 52 is moved by the urging force of the garter spring 56.
is open. In this state, the chuck mechanism 32 is lowered, and the cap abutting member 6 is placed on the upper surface of the cap 3 held by the cap supply mechanism 21.
2 come into contact. Next, pressure is supplied into the pressure chamber 60, and the piston 59 moves forward. As the piston 59 moves forward, the cam roller 57 is pushed up along the cam portion 58, and the chuck arm 52 is closed against the biasing force of the garter spring 56. The abutment members 53 at the distal ends of these chuck arms 52 abut against the outer peripheral surface of the base end of the cap 3, and the cap 3 is gripped and held. ' According to such a chuck mechanism 32, it is possible to reliably grip and hold such a mirror hinge type cap 3. That is, this mirror-hinge type cap has a hinge portion 5 and the like protruding from its tip portion, and its outer shape is not cylindrical. For this reason, a normal chuck mechanism cannot accurately grip and hold such a cap. but,
In this chuck mechanism 32, a cap abutting member 62 abuts the distal end surface of the cap 3, and an abutting member 53 at the distal end of the chuck arm 52 contacts the proximal end of the cap body 4 of the cap 3, that is, the hinge portion 5. Since the cap 3 comes into contact with a cylindrical portion that does not protrude, the cap 3 can be accurately and reliably gripped.

Further, the cap supply mechanism is configured as follows. That is, 41 in FIG. 3 is the cylinder mechanism, and the piston rod of this cylinder mechanism is configured to be rotated and expanded/contracted. An arm 43 is attached to the tip of this piston rod, and a cap holding plate 42 is attached to the tip of this arm 43.

Two cap fitting members 44 are provided protrudingly on the cap holding plate 42, and these two cap fitting members 4
4 has a bifurcated shape. Further, two grooves 45 are formed at each tip of the chute 20, and these grooves 45 are formed from the bottom wall to the tip wall of the tip of the chute 20. The cap 3 fed from the parts feeder 18 is configured to slide down the chute 20 and stop at the tip where the groove 45 is formed. Then, the arm 43 rotates, and the cap fitting member 44 on the cap holding plate 42 is positioned directly below the cap 3. Next, the cap holding plate 42 is raised so that the cap fitting member 44 passes through the groove 45 and fits into the cap 3, and the cap 3 is positioned above the upper edge of the chute 20. Push these up. Next, the arm 43 is rotated in the opposite direction, the cap holding plate 42 is separated from the chutes 20, and the cap 3 held by the cap fitting member 44 is taken out from the chutes 20. Then, the cap holding plate 42 is moved to below the chuck mechanism 31 of the cap mounting head 17. Then, the chuck mechanism 31 mentioned above descends and grips these caps 3. Next, the cap holding plate 42 is retreated from below these chuck mechanisms 31, and the cap 3 held by these chuck mechanisms 31 is screwed onto the tube container body 1.

Note that the present invention is not limited to the above embodiments.

For example, the chuck mechanism, cap supply mechanism, etc. described above are not necessarily limited to the structures described above.

[Effects of the Invention] As described above, the present invention includes a chuck mechanism that grips and mounts a cap on a cap mounting head, and a tube holding arm that abuts against the circumferential surface of the tube container body and prevents its rotation. Therefore, there is no need to provide a chuck mechanism for holding the tube container for each mandrel. Furthermore, since this cap mounting head is attached to the fixed side of the device, the mechanism for driving this tube holding arm is also simplified.

Therefore, it has a simple structure and high reliability, and has great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the structure of the tube container. Second
Figures 6 to 6 show one embodiment of the device of the present invention, and the second
The figure is a front view of the entire device, Figure 3 is a front view of the cap mounting head, Figure 4 is a view taken along the line IV-IV in Figure 3, and Figure 5 is a front view of the entire device.
The figure is a longitudinal sectional view of the chuck mechanism, and FIG. 6 is a perspective view showing the main parts of the cap supply mechanism. 13... Mandrel, 17... Cap mounting head, 20... Chute, 21... Cap supply mechanism,
31... Chuck mechanism, 33... Head body, 36
...Tube holding arm applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 4

Claims (1)

[Claims] A mandrel inserted into and holding the tube container body, a cap mounting head provided near the mandrel, a chuck mechanism provided on the cap mounting head for gripping the cap, and rotating the chuck mechanism. A cap mounting device for a tube container, comprising: a rotational drive mechanism; and a tube holding arm provided on the cap mounting head and abutting against the circumferential surface of the tube container main body to prevent the tube container main body from rotating.