JPS63175750A - Rotary mechanism for container - Google Patents

Abstract

PURPOSE:To securely grip a container at a perpendicular attitude by providing two freely rotatable rollers and one driving roller for gripping the collar of the mouth part of the container at three positions, two roller support rods which are freely opened and closed to right and left, and a mechanism which opens and closes the support rods to right and left. CONSTITUTION:The container 3 is placed on a belt conveyor 35 and a motor is driven to move the driving roller as shown by an arrow. The roller supporting rods 52 of the container support mechanism 48 are opened to right and left to receive the container 3 and the collar 60 of the mouth part is crimped by the three rollers 49, 51, and 51 and rotated by 90 deg. as shown by an arrow together with a rotary disk 47. Then a rotary gear 53 engages a driving gear 58 and an inspection device 20 is lowered along the sensor support rods 59 to a constant position of the upper end part of the mouth part of the container 3 when the motor 56 is actuated, its force is transmitted to the driving roller 49 to which the rotary gear 53 is fixed through the driving gear 58 to rotates the container 3 and two rollers 51 and 51 with its frictional force. Thus, they are rotated while the upper part of the container 3 is supported at the three points, so the container 3 is securely held at the perpendicular attitude and the rotating operation is performed stably as well.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a container rotation mechanism that is capable of reliably and stably rotating a container.

(Technical background of the invention and its problems) The market for containers made of synthetic resin, particularly containers made of PET (polyethylene terephthalate), continues to expand, mainly for large soft drink containers. Recently, the need for heat-resistant multilayer containers has increased, and in response, research and development are progressing. To explain the manufacturing method of general synthetic Jll containers (including heat-resistant multilayer containers) with reference to FIGS. 3 (Δ) to (D), first, an injection molding machine (not shown)
3 (A)), and then hold the opening of the parison l in the mold 2 of a stretch blow molding machine (not shown) (the third
Figure (B)), by stretch blow molding (Figure 3 (C))
), a container 3 of a predetermined shape can be obtained (see Fig. 3 (
D)).

However, it is necessary to judge whether the performance of the heat-resistant multilayer container made by the method described above is good or bad, and the standard for this is that if the heat-resistant resin is uniformly present throughout the heat-resistant multilayer container, it is judged as good. .

The conventional method of determination is visual inspection, but
There is a drawback that determination cannot be made when the main resin and the heat-resistant resin are the same color or transparent. Destructive testing using sampling can determine pass/fail, but heat-resistant multilayer containers have more unstable manufacturing factors than single containers, and there is a risk of sudden defects. There were problems such as a lack of sexuality.

Therefore, the present applicant has developed an inspection method and apparatus that utilizes the property that the main resin has superior ultraviolet transmittance at a specific wavelength compared to heat-resistant resins.

FIG. 4 is a perspective view of the schematic structure of the inspection equipment, and FIG. 5 is a cross-sectional side view of the structure of the sensor section.

This inspection device 20 uses a mercury/xenon lamp (not shown)
a light source device 21 that generates ultraviolet rays and visible rays; and a quartz fiber 22 for light with a diameter of 2 mm that is connected to this light source device 21 and condenses and transmits the ultraviolet rays and visible rays.
and a diameter 1n for receiving the projected light.
+m detector quartz fiber 24 and a light receiving section 26 having a guide 25 that supports the detector quartz fiber 24. Here, the reason why a mercury/xenon lamp is used as a light source is to increase the amount of light in the ultraviolet region. Further, when aligning the ends of the light quartz fiber 22 and the detector quartz fiber 24, it is not visible only with ultraviolet rays, but it can be easily done because visible light is emitted. Further, in the middle of the quartz-based fiber 24 for the detector, there is a sensor section consisting of an interference filter 27 that transmits only a specific wavelength (350±10 nm) and a photoelectric conversion type gallium phosphide element 28 that receives the ultraviolet rays and visible light. 29, and at the end of a cable 30 extending from the sensor section 29, a determination section 31 consisting of an amplifier (not shown) and a determination circuit (not shown) is provided. Due to the molding process, if a heat-resistant resin layer exists at the upper end of the mouth of the container, it means that the entire container has a heat-resistant resin layer, so the inspection method is to inspect the upper end of the mouth of the container all around. This can be achieved by measuring over a period of time and determining the distribution state of the heat-resistant resin layer. Generally, the mouth of the container is often equipped with a screw to seal it with a cap, so measurements cannot be taken at the screw, but the rubber gasket installed inside the cap can be crushed to seal the container. Measurement is performed using the cylindrical shape of the container, which has no threaded part at the upper end of the mouth, which is provided for the purpose of increasing the effectiveness. However, as shown in FIG. 6, the light quartz fiber 22 and the detector quartz fiber 2
4 are placed in a straight line using the visible light,
The light generated from the light source device 21 is projected through the quartz-based fiber 22 for light, is narrowed by a slit 32, and is focused on the upper end 33 of the opening of the container 3, which is being rotated by a container rotation device 34.
is irradiated. The light transmitted through the mouth upper end 33 is received by the detector quartz fiber 24, and is filtered at a specific wavelength (350±t
onm), and this specific wavelength of light is extracted from gallium.
When detected by the phosphorus element 28, this gallium phosphorus element 2
8 generates a voltage, and this voltage is amplified by an amplifier and manually inputted to a judgment circuit to judge whether the container 3 is good or bad (Patent Application No. 1983)
-289864).

However, in order to perform accurate measurements, a mechanism is required to reliably grip the container 3 and rotate it smoothly. but,
Conventionally, there were no inspection methods and equipment as described above,
There was no mechanism for rotating the container 3 that could accommodate this, which was a problem.

(Object of the Invention) The present invention was made in view of the above-mentioned circumstances, and an object of the present invention is to provide a container rotation mechanism that can securely grip a container and rotate it smoothly. .

(Summary of the Invention) The present invention relates to a container rotation mechanism, and includes two rotatable rollers and one drive roller for gripping the lip of the mouth of the container at three locations, and a rotatable roller and a driving roller. two roller support rods that can be opened and closed left and right to take in the brim of the mouth of the container, which is equipped with a roller at one end; a mechanism for opening and closing these two roller support rods left and right; and the container. and a mechanism for rotating the drive roller.

(Example of the invention) Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1(A) shows a plan view of the main part of the container rotation mechanism of the present invention, and FIG. 1(B) shows its side view.

The container support mechanism 48 includes a drive roller 49 that rotates the container 3.
It has one set of 11tlI150 equipped with 11tlI150 and two sets of roller support rods 52 equipped with rotatable rollers 51, and the rotation of the roller support rods 52 is such that the two sets of roller support rods 52, 52 sandwich ψ1b50. It is fixed on the stand 62. Therefore, three rollers 49, 51 .
51 is arranged in a triangular shape, and the drive roller 49
A rotating gear 53 is fixed to the upper part and meshes with a drive gear 58 connected to an output shaft 57 of a motor 56 on a stand 65 provided at the upper part of the stand 62. The roller support rod 52 has a three-pronged shape centered on a rotating shaft 61, and has a rotatable roller 51. An opening/closing roller 63 is fixed to the other end, and one end of a spring 64 is fixed to the other end. An air cylinder 66 and a core rod 67 are fixed on the stand [i2] behind the opening/closing roller δ3.

Next, the operation of the above embodiment will be explained.

The air cylinder 66 operates and the core rod 67 moves to the left in the figure, pushing away the two opening/closing rollers 63, 63.
Two roller support rods 52.5 are arranged around the roller rotation shaft 61.
Spread 2 to the left and right. When the brim 60 at the mouth of the container 3 enters between the two roller support rods 52 and 52, the air cylinder 66 is operated again and the core rod 67 is moved to the right in the figure. Then, the spring 64 is restored and the two roller support rods 52.52 are closed around the roller rotation shaft 61, and the constricted portions of the three rollers 49.degree. do. When the motor 56 starts, the output increases to h57. The drive roller 49 is rotated via the drive gear 581 and the rotating gear 53, and the friction force thereof causes the container 3 and the two rotatable rollers 51, 51 to rotate.

This rotation is performed by supporting the upper part of the container 3 at three points, so that the container 3 can be reliably gripped and a stable rotation operation can be performed while maintaining an accurate vertical posture.

In addition, for the above-mentioned rotation transmission, a belt is used instead of a gear, and a hydraulic cylinder is used instead of the air cylinder 66.
Furthermore, an air cylinder may be used instead of the spring 64 without any particular limitation.

FIG. 2 (8) and ([1)] show the above-mentioned inspection device 2.
0 and rotating machine! FIG. 11 shows a plan view and a side view of a schematic configuration of a container rotation device equipped with a '948. The container rotating device 34 has conveyor belts 35, 35 for carrying in and carrying out the containers 3, and conveyor belt rollers (not shown) arranged at the ends of the conveyor belts. +
A belt 44 is hooked around a pulley 38° 38 at the end of 37.37 and a pulley 43 on an output shaft 42 of a deceleration mechanism 41 of a motor 40 in the main body 39 to drive a conveyor belt 35.35.

A mechanism 45 for rotating the container 3 is provided between the two conveyor belts 35 and 35, and a rotating shaft 46 that rotates using the motor 40 and deceleration mechanism 41 described above is attached to the upper part of the main body 39. A rotating disk 47 is fixed to the rotating shaft 46 and rotates integrally with the rotating shaft 46 .

On the circumference of this rotary disk 47, there is a set of shafts 50 equipped with drive rollers 49 at every 90 degrees, and a set of rotatable rollers 51.
Four sets of container support mechanisms 48, 48, 48, and 411, each of which includes two sets of roller support rods 52, are fixed. The three rollers 49, 51, 51 are arranged in a triangular shape, and a rotating gear 5 is mounted above the drive roller 49 located on the inner circumferential side.
3 is fixed. Further, above the rotating disk 47, there is a shaft 54 that is stopped without being affected by the rotation of the rotating lll1k46, and a stopping disk 55 is attached to the shaft 54.
is fixed. 90° to the left of this stop disk 55 (
The carrying direction of the conveyor belt 35 is set as 00, and the rotating disk 4
A motor 56 is fixed on the circumference at 9° in the rotational direction of the motor 7, and a drive gear 58 at the end of its output shaft 57 is provided to mesh with the rotating gear 53. Furthermore, an L-shaped sensor support rod 59 is located at 90° to the left of the main body 3.
A silica-based fiber 22 for use as a light source is installed at the tip of the quartz-based fiber 22. A detector quartz fiber 24 having a guide and a slit 32 are fixed at the aforementioned positions (see FIG. 6).

Next, the operation of the above embodiment will be explained.

The container 3 is placed on the conveyor belt 35, and the motor 40 is activated to rotate a drive roller (not shown) to move the container 3 in the direction of the arrow in the figure. And the container support mechanism 4-8
When the roller support rods 52, 52 open left and right to receive the container 3, the collar 60 at the mouth is held between the three rollers 49, 51, 51, and rotated 90 degrees in the direction of the arrow in the figure together with the rotary disk 47. , the rotating gear 53 and the driving gear 58 mesh with each other. When the inspection device 20 is lowered along the sensor support rod 59 to a fixed position at the upper end of the mouth of the container 3 and the motor 56 is started, its rotation is transmitted via the drive gear 58 to the fixed drive of the rotating gear 53. The friction force is transmitted to the roller 9, and the container 3 and the two rotatable rollers 51, 51 rotate due to the frictional force.

Since this rotation is carried out by supporting the upper part of the container 3 at three points, the container 3 can maintain an accurate vertical posture, and its rotating operation can also be performed stably. In response to such movements, the inspection device 20 performs the measurements described above. After the measurement is completed, the inspection device 20 rises along the sensor support rod 59, and the container 3 moves 90'' in the direction of the arrow again together with the rotating disk 47.
rotates, and the roller support rods 52 and 52 open left and right to open the container 3.
The above operation of opening the container, placing it on the conveyor belt 35, and moving it in the direction of the arrow in the figure has been described for one container, but when the containers are conveyed continuously, the above operation is performed continuously. repeated.

Moreover, this rotational m-drawing can be used not only for the above-mentioned container inspection apparatus, but also, for example, for a container foreign matter inspection apparatus, and the apparatus is not particularly limited.

(Effects of the Invention) As described above, according to the container rotation mechanism of the present invention, since the upper part of the container is supported at three points, the container can be reliably gripped.

Furthermore, it becomes possible to perform stable rotation while maintaining an accurate vertical posture.

[Brief explanation of the drawing]

Figures 1 (8) and (B) are a plan view and side view schematically showing the rotation mechanism of a container that realizes the present invention, and Figures 2 (A) and ([1] are inspections of a container to which the present invention is applied. A plan view and a side view schematically showing the container rotating device equipped with the device, FIG.
^) ~ (D) are diagrams showing the manufacturing method of synthetic resin containers, 'f3
FIG. 4 is a perspective view schematically showing the container inspection device, FIG. 5 is a sectional side view showing the sensor section, and FIG. 6 is a side view showing an inspection method using the container inspection device. DESCRIPTION OF SYMBOLS 1... Parison, 20... Inspection device, 22... Quartz fiber for light, 24... Quartz fiber for detector, 3A... Container rotation device, A8... Rotation mechanism. Applicant's agent Yu Yasugata Sancha 4 Kogyo 5 Rules (A) CB + No. (C) (D) 3 times

Claims (1)

[Claims] two rotatable rollers and one driving roller for gripping the mouth brim of the container at three places, and the brim of the container mouth provided with the rotatable roller at one end; There are two roller support rods that can be opened and closed on the left and right sides for
1. A container rotation mechanism comprising: a mechanism for opening and closing the roller support rods left and right; and a mechanism for rotating the drive roller that rotates the container.