JPS5828521B2 - Binkounaikeikensahouhou Oyobi Souchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bottle mouth inner diameter inspection device for automatically measuring and inspecting the inner diameter of a bottle mouth of a molded bottle, and for picking out and rejecting bottles with a non-standard diameter.

Bottles containing various liquids are usually sealed with an inner stopper made of synthetic resin, rubber, cork, etc., but for this purpose the inner diameter of the bottle opening must be molded within a certain range.

Therefore, in order to inspect and extract defective caliber bottles, the lower end was
In other words, a method is usually used in which a round bar with two diameters is used as a gauge, with the minimum allowable inner diameter and the adjacent part has a large diameter, that is, the maximum allowable inner diameter, and judgment is made by the fit of this round bar in the bottle mouth. ing.

However, manual testing is inherently low in efficiency, and it is natural that the reliability of test results is lowered due to fatigue caused by long hours of academic work, and the testing speed is further reduced.

Thus, the inspection of the inner diameter of the bottle mouth has traditionally been an important bottleneck in the bottle production process.

The present invention is an inspection device that completely solves the problems in the conventional inspection methods described above.

FIGS. 1A, B, and C are side views of a two-stage diameter round bar gauge showing a longitudinal section of the bottle mouth for detailed explanation of the present invention, respectively;
FIG. 2 is a partially longitudinal side view showing the device of the present invention, FIG. 3 is an enlarged longitudinal sectional view of the detecting section of the device, and FIG. 4 is a sectional view taken along the line A--A in FIG. 3.

First, the principle of the present invention will be explained with reference to FIG. 1. In each figure of FIG. 1, if the inner diameter of the bottle mouth of bottle a is D3, the maximum allowable inner diameter of the bottle mouth is D1h, and the minimum allowable inner diameter is D2, then The diameter of the small diameter portion at the lower end of the measuring portion of the round bar gauge is D2, and the diameter of the large diameter portion adjacent thereto is Dl.

In addition, in each figure A, B, and C, C is the upper end of the round bar gauge,
d is a light source using a light emitting diode, and e is a photoreceptor using a phototransistor.

Figure A shows the state in which a standard diameter bottle is being measured, and the relationship between the inner diameter of the bottle mouth and the measurement part of the round bar gauge is D.
2〈D3〉Dl, in this case, the round bar gauge is at its upper end cf) 3 From the light-emitting element d just below to the light-receiving element e below
It comes to a point where it blocks the beam of light that reaches it.

In this way, in the case of a standard caliber bottle, of the light rays passing between the two sets of light emitting elements and light receiving elements, only the lower one is blocked, so this is electrically transmitted, and the bottle is passed on to the next process. sent to.

Figure B shows a state in which a bottle with an inner diameter smaller than the standard is being measured and inspected. comes to a place where its upper end C intercepts two beams of light from the light emitting element d to the light receiving element e.

This condition is immediately communicated electrically and the bottle is removed from the process.

Figure C shows a state in which a bottle having an inner diameter larger than the standard is being measured and inspected.

The relationship between the inner diameter of the bottle mouth and the measurement part of the round bar gauge is Dl<D
3, and the round bar gauge is located at a position where its upper end does not block any of the cbsZ beams.

In this case, since the state in which the two light receiving elements e are still receiving light is transmitted as an electrical signal, the bottle is immediately removed from the process.

In short, the principle of the present invention is to configure the positional relationship between the step of the measuring part of the round bar gauge and the two light beams as described above, so that the detection output of the light receiving element e is used as an input to the actuating device for the next process of eliminating defective bottles. According to this, by using a light emitting diode as a light projecting device, the size can be reduced.

Therefore, since the projector and the round bar gauge can be moved together and their relative positions allow extremely accurate measurements, this is extremely advantageous for automation.

Next, the second to fourth embodiments of the apparatus of the present invention will be described.
This will be explained using figures.

Reference numeral 1 denotes a two-stage diameter round bar type measuring element, 2 a guide rod, and 3 a guide shaft. The measuring element 1 is detachably attached to the guide shaft 3 by a male screw 4 at its tip.

The guide shaft 3 is slidably inserted into the cylinder 6, and its collar 5 engages with the stepped portion 6' of the cylinder 6, thereby preventing it from falling off downward.

A coil spring 8 is attached to the guide rod 2 between the cylinder end 7 at the upper end of the cylinder 6 and the collar 5, and the entire round bar gauge is always urged downward with respect to the cylinder.

A guide ring 9 having a tapered conical hole 9' is screwed onto the lower end of the cylinder 6.

The cylinder 6 is fitted into a cylindrical sliding shell 10, and the nut 1
1 is concluded.

A detection part 12 is attached to the upper end of the sliding shell 10 with a bolt 13, and the upper end of the guide rod 2 reaches an inner hole 12' of the detection part 12.

A fixing rod 1 is attached to the outer cover 16 fixed to the upper end of the outer shell 14.
5 is attached, and the entire apparatus is attached to, for example, a cylinder 17 which can be moved up and down by means of a male thread 15' cut at the upper end of the fixed rod 15.

The detection unit 12 is an upper layer member 18. The inner hole 12' is formed by the middle layer member 19 and the lower layer member 20, and these three members are engaged by the step 21, and the depth of the recess due to the step 21 of each member is compared to the height of the convex portion. Since it is relatively thick, two slits 22 are formed.

23 is a light emitting element (light emitting diode), 24 is a light receiving element (
A pair of phototransistors (phototransistors) are housed in holes 25 and 26 formed at the position of the slit 22, facing each other, and these terminals (not shown) are electrically connected to an external detector.

Next, the operating state of the device of the present invention will be explained.

When the device is lowered for a bottle placed or temporarily stopped below the device, the position of the bottle opening is precisely determined by the tapered conical hole 9' of the guide ring 9.

Then, when the measuring element 1 is protruded into the bottle mouth, the sliding shell 10 enters into the outer shell 14 due to the resistance, and absorbs the stroke difference of the cylinder 17.

Next, in the case of a bottle whose inner diameter conforms to the standard or a small bottle that does not meet the standard, the guide shaft 3 and guide rod 2 are pushed up relative to the detection part 12 etc. against the elasticity of the coil spring 8. The upper end of the guide rod 2 that has reached the inner hole 12' of the detection unit 12 further enters the inner hole 12', connects only the lower part of the upper and lower slits 22, or both, and accordingly slit light. is shaded.

On the other hand, if the bottle has a larger inner diameter than the standard, the guide rod 2 will not rise relative to the detection section 12, so the slit light will not be blocked.

In this way, whether the light-receiving element 24 facing the light-emitting element 23 remains in a light-receiving state, one or both of them is in a non-light-receiving state is transmitted as an electrical signal, and whether the diameter of the bottle is within the standard or not is transmitted as an electrical signal. It is determined whether

The device is then lifted up by the cylinder 17 and moved away from the bottle mouth, and the next actuating device is operated by the output of the detection section 12, and the defective bottles are removed from, for example, a belt conveyor.

According to the device of the present invention as described above, the guide shaft 3
It is possible to immediately handle inspections of bottles of different standards by exchanging the measurement head 1 screwed on the tip of the cylinder 6 and the guide ring 9 screwed on the bottom end of the cylinder 6. By downsizing the detection unit using a transistor, the detection unit operates integrally with the cylinder 6, guide ring 9, etc., and the inner diameter of the bottle mouth can be measured by changing the relative positional relationship between the probe 1 and the guide ring 9. It is extremely easy and accurate since it is done with a chisel.

Therefore, by incorporating the device of the present invention into the bottle production line, the post-inspection of bottles can be completely automated, speeded up, and accurate. It is extremely thick.

[Brief explanation of the drawing]

Figures 1A, B, and C are side views of a two-stage diameter round bar gauge taken longitudinally through the bottle mouth for detailed explanation of the present invention, and Figure 2 shows an apparatus that is an embodiment of the present invention. FIG. 3 is an enlarged longitudinal sectional view of the detecting section of the device, and FIG. 4 is a sectional view taken along the line A--A in FIG. 3. a...Bottle, b...Round bar gauge measuring section, C...Round bar gauge upper end, d...Light source, e...・Photoreceptor, 1...Measuring element, 2
...Guide rod, 3...Guide shaft, 6...-Cylinder, 7...Cylinder end, 8...-Spring, 9...・・・
-Guide ring, 10...Sliding shell, 12...
・Detection section, 14...-Outer shell, 22...Slit, 23...Light-emitting element, 24...-
Light receiving element.

Claims (1)

[Claims] 1. A round rod type measuring element 1 with a tip having a smaller diameter is screwed onto its lower end, a guide shaft 3 with a guide rod 2 fixed to it via a flange 5 is attached to its upper end, and a guide ring 9 is attached to its lower end. A coil spring 8 is inserted between the collar 5 of the guide rod 2 and the cylinder end 7, and the upper end of the guide rod 2 is placed on the sliding shell 10 which is attached to the cylinder 6. The sliding shell 10 faces into the inner hole 12' of the fixed measuring part 12, and the sliding shell 10 is further fitted with an outer shell 14 having attachment means for a vertically moving cylinder or the like on the upper part. By being pushed up relatively to
A bottle opening inner diameter inspection device characterized in that only or both of the lower part of the slit light in the inner hole 12' passing through the inner hole 12' is blocked.