JPH0536191Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an apparatus for measuring the internal pressure of a can by holding the can body in the diametrical direction when determining whether the internal pressure of the can is appropriate.

(Prior art) One of the conventional examples of the above-mentioned measuring device is
It is disclosed in Publication No. 157537. As shown in FIG. 8, this device includes a cylindrical and rotatable receiving roll 1, which is provided at a position facing the roll, and whose outer peripheral surface 2 has a medium-height shape and is rotatably attached to a support shaft 3. It includes a measuring roll 4, a bearing 5 that horizontally supports the support shaft 3, and a pressure measuring device 6 that measures the pressure transmitted from the measuring roll 4 to the support shaft 3. In addition, 8 is a round belt (4 pieces) that presses against the canned food at the upper and lower sides of the canned food support horizontal plate 7 and both sides of the canned food, in order to advance and pass the canned food A between the receiving roll 1 and the measuring roll 4. It is.

The internal pressure of a can can be measured using this device as follows.

Canned food A is placed on horizontal plate 7 and advanced between round belts 8, 8. The canned food advances on the horizontal plate 7 as the round belt advances, and passes between the receiving roll 1 and the measuring roll 4 while being held therebetween. The pressure at this time reaches the pressure measuring device 6 from the measuring roll 4 via the support shaft 3 and is measured.

In this conventional device, two sets of the above-mentioned receiving rolls, measuring rolls, pressure measuring devices, etc. are arranged in parallel in the direction of travel of the can, and the two measured values are calculated to determine whether the internal pressure of the can is good or bad.

(Problems to be solved by the invention) The above conventional device has a configuration in which the measuring roll directly operates the pressure measuring device, so the measurement accuracy is insufficient, and the supporting axis of the measuring roll is set in a direction perpendicular to the can. Furthermore, since the pressure measuring device is provided on the extension of the support shaft, there is a problem in that these devices protrude in the lateral direction orthogonal to the can, requiring a large installation space.

(Means for solving the problem) The above-mentioned problem is solved by a pair of rotating rollers facing each other so as to sandwich the can body in the diametrical direction, and a pair of rotating rollers each having the rotating rollers on one end side and facing each other in a direction parallel to each other. a set of extending roller shafts; a support portion that supports the other end of each roller shaft so as to enable rocking of the roller shafts on a plane on which the set of roller shafts is located;
This problem can be solved by including a measuring device located between the axes of the pair of rollers and connected to both roller axes to measure the pressing force applied to the pair of rotating rollers.

(Function) A pair of parallel roller shafts having a rotating roller on one end and swingably supported on the other end, and a pressure measuring device located between these shafts and connected to both roller shafts. As a result, the pressing force applied to the rotating roller is doubled and acts on the pressure measuring device, improving measurement accuracy.Also, from a structural perspective, protrusion in the lateral direction perpendicular to the can can be minimized. Because it can be installed in a small space, the installation space can be small.

(Embodiment 1) First, one embodiment of this invention will be explained with reference to FIGS. 1, 2, and 3.

In this example, cans are obtained one by one and inserted between measuring rolls, and in these figures,
Reference numerals 11 and 11 denote a pair of rotating rollers that are arranged to face each other so as to sandwich the can body of canned food A in the diametrical direction;
2 connects this rotating roller 11 to one end side 12a.
A pair of roller shafts 13, 13 are rotatably attached to the roller shafts and extend parallel to each other. the other end 12b,
A support part 14 for supporting the roller shaft 12b is located between the pair of roller shafts 12, 12, and the support part 14 supports the roller shaft 12b.
The roller shafts 12, 12 are connected to the roller shafts 12, 12 through arms 15, 15 extending perpendicularly to the shaft and in the direction of the mating roller shaft.
This is a pressure measuring device that is connected to the rollers 11, 11 and measures the pressing force that the rollers 11, 11 receive.

The arm 15 is on the other end side of the roller shaft 12b, 12b.
It is best to install it near the Further, in this embodiment, the support portion 13 is composed of a cylinder 13a provided perpendicularly to the substrate 16, and a fulcrum shaft 13b rotatably inserted into the cylinder 13a and orthogonally connected to the roll shaft 12 at the end of the roll shaft. . Furthermore, reference numerals 17 and 17 refer to support members that slidably support the arms 15 and 15 so that the roller shafts 12 and 12 extending parallel to the substrate 16 can swing around the support parts 13 and 13 as fulcrums;
18 is a signal processing display unit that stands upright on the substrate 16 and receives signals from the pressure measuring device 14 and displays pressure, etc.;
19 is a wire for sending signals.

The configuration of the pressure measuring device 14 in this embodiment is shown in FIGS. 4 and 5.

This consists of a pair of threaded bolts 14a, 14a connected to the arms 15, respectively: a pair of dish-shaped parts 1 each having a U-shaped cross section, with each bolt 14a protruding from the center of the outer surface.
4b, 14b: fitted into the recesses of the dish-shaped portion, respectively;
A pair of pressing members 14f1 and 14f2 are fixed to the dish-shaped portion by screws 14e (each includes a disk 14c and a plurality of legs 14d extending from the outer periphery of the disk perpendicularly to the disk). The legs 14d of the other member 14f2 are located between the legs 14d of the one member 14f1, forming a facing configuration. , consists of. Note that 14g is a screw hole into which the screw 14e is screwed.

In this pressure measuring device, canned food A is placed on rotating roller 1.
When inserted between 1 and 11, the rotating rollers 11 and 11
receives a pressing force from the can A while widening the distance between them, and this pressing force is applied to the roller shafts 12, 12, and accordingly the arm 15, screw bolt 14a, and dish-shaped portion 14
b. The pressing force is transmitted to the portion consisting of the pressing portion 14f in a direction that reduces the distance between the respective discs 14c, 14c, and compressive stress commensurate with the pressing force is applied to the compressively strained material 20 from both sides. The strained material 20
sends a signal to the display section 18. The display unit 18 processes the signal and displays the can internal pressure.

(Example 2) Another example will be described with reference to FIGS. 6 and 7. This embodiment is a device for measuring the internal pressure of canned goods being conveyed on a conveyor.

In FIGS. 6 and 7, 21 and 21 are a set of rotating rollers similar to those in the first embodiment, and 22 and 22 are the rotating rollers 21 and 21 connected to one end side 22, respectively.
A pair of roller shafts 23, 23 are attached to the roller shafts 22, 22a and extend vertically parallel to each other, and both roller shafts 2
a support part 2 that supports the other ends 22b, 22b of the roller shaft, respectively, so as to enable rocking of the roller shafts 2, 22;
Reference numeral 4 denotes a pressure measuring device having the same configuration as in the first embodiment and connected to the roller shafts 22, 22 via arms 25, 25.

In this embodiment, upright plates 26, 26 are provided near both sides of the conveyor belt B for conveying the canned goods A, and the ends are fixed to the upright plates 26, 26, respectively, so that the upper parts are located parallel to each other at the same height. stick 2
7, 27 and lower rods 28, 28 are provided, and the upper rod 2
7 and 27 have upper cylinder fixing members 3 having upper cylinders 29 and 29 protruding in opposite directions in the horizontal direction.
0 and 30 were fixed, respectively, and lower cylinder fixing members 32 and 32 having similar lower cylinders 31 and 31 were also fixed to the lower rods 28 and 28, respectively. and,
On the side surface of the support case 34 containing the ball bearing 33 into which the other end 22b of the roller shaft 22 is fitted,
A circular hole 35 is provided in which the roller shaft hangs and into which the upper cylinder 29 is rotatably fitted. 22 was installed.
Thus, the support portion 23 is attached to the upper cylindrical fixing member 3.
0, consists of an upper cylinder 29 and a support case 34.
Further, in order to allow the roller shaft 22 to swing smoothly using the upper cylinder 29 as a fulcrum, a spherical bearing 36 is provided on the arm 25.
A long hole 39 into which the lower column 31 is fitted is provided on the side surface of a lower case 38 which supports the roller shaft 2 and houses a ball bearing 37 into which a roller shaft is fitted. In addition, 40, 40 is a thrust bearing, 4
1 is a motor for rotating the roller shaft 22;

In this embodiment, first, the motor 41 rotates the roller shaft 22 and the rotating roller 21.
Rotate so that the circumferential speed of belt B matches the feed speed of belt B. In this manner, canned food A is placed on belt B and advanced toward between rotating rollers 21 and 21. Canned food A and rotating roller 21,
Even if there is some deviation between the roller shafts 22 and 21,
can swing parallel to each other, and since the rotating rollers 21 are rotating, they can smoothly pass between the rotating rollers. At this time, the internal pressure of the canned food is measured in the same manner as in the previous example.

In both of the above embodiments, a compression strain gauge was used as the pressure measuring device, but other strain gauges or minute displacement gauges may also be used.

(Effect of the invention) The device of the invention has a rotating roller at one end, and the other end is between a pair of roller shafts supported so that the roller shaft can swing. Since it is equipped with a pressure measuring device connected to the can, the pressing force applied to the rotating roller is doubled and acts on the pressure measuring device, thus improving the pressure measurement accuracy. Since it has a structure that does not protrude in any direction, it has the effect of requiring less installation space.

Furthermore, since a set of roller axes can swing parallel to each other, when introducing canned goods between the rotating rollers, even if the long axis of the canned food is not exactly parallel to the roller axis, or the canned food is Even if the roller shafts are not inserted into the center of the two roller shafts accurately, the roller shafts swing parallel to each other, and the canned food can be smoothly placed or passed between the rotating rollers.

[Brief explanation of drawings]

Figures 1 to 3 show one embodiment of this invention.
2 is a front view, FIG. 3 is a side view, FIG. 4 is a sectional view showing the configuration of an example of a pressure measuring device, FIG. 5 is a perspective view of a pressing member, and FIG. 7 is a partially cutaway front view of another embodiment, FIG. 7 is a view taken along the - arrow in FIG. 6, and FIG. 8 is a schematic layout diagram of a conventional example. 11, 12...Rotating roller, 12, 22...Roller shaft, 13, 23...Roller shaft support part, 1
4,24...Pressure measuring device.

Claims (1)

[Claims for Utility Model Registration] (1) A set of rotating rollers facing each other so as to sandwich the can body in the diametrical direction, and a set of rotating rollers each having one end thereof and extending parallel to each other. a roller shaft, a support part that supports the other end side of each roller shaft so as to enable rocking of the roller shaft on the plane on which the set of roller shafts is located, and a support section located between the set of roller shafts. and a measuring device connected to both roller shafts to measure the pressing force applied to the pair of rotating rollers. (2) The can internal pressure measuring device described in the preceding paragraph, wherein the measuring device is equipped with a strain gauge.