WO2024024163A1

WO2024024163A1 - Gob monitoring device and method for adjusting position of line sensor camera

Info

Publication number: WO2024024163A1
Application number: PCT/JP2023/011466
Authority: WO
Inventors: 岳鈴木
Original assignee: 東洋ガラス株式会社
Priority date: 2022-07-26
Filing date: 2023-03-23
Publication date: 2024-02-01
Also published as: KR20240015614A

Abstract

The present invention provides a gob monitoring device that is less likely to malfunction due to swabbing oil smoke and a method for adjusting the position of a line sensor camera.　The gob monitoring device 1 according to the present invention comprises a first line sensor camera 51 that captures images of gobs 32 that fall between an outlet 18a of a deflector 18 that guides gobs 32 distributed between a plurality of sections Sc1 to Sc5 in a scoop 14 to a rough mold 20 and the rough mold 20 and a control device 40 that detects the gobs 32 from the plurality of images 60 captured by the first line sensor camera 51 and detects delays in introduction of the gobs 32 into the rough mold 20. The first line sensor camera 51 is arranged at a position where a plurality of images of the falling gobs 32 are captured in the plurality of sections Sc 1 to Sc5.

Description

How to adjust the position of gob monitoring device and line sensor camera

The present invention relates to a gob monitoring device and a method for adjusting the position of a line sensor camera that images gobs.

Generally, in the glass bottle production process, there is a system in which the molten glass extruded from an orifice provided under the spout is cut by a shear blade, and the gobs generated by the cutting are sent to a glass bottle forming machine via a gob distribution device. Are known. In such systems, hot gobs slide through a gob distribution device consisting of a scoop, trough, deflector, etc., and the gobs exiting the outlet of the deflector fall freely into the rough mold of a glass bottle forming machine. Injected.

The falling speed of the gob may suddenly decrease due to a malfunction of the gob cutting system or the shear blade cutting off foreign objects in the molten glass. Such a decrease in the falling speed of the gob causes the gob to deviate from the timing when it should be fed into the rough mold, causing situations such as falling or adhering to other parts such as baffles during operation (gob feeding error). There is a fear. When a gob feeding error occurs, it takes time to replace parts and adjust the molding machine, leading to a long halt in glass bottle production.

The invention disclosed in Patent Document 1 is a gob fall monitoring/warning system that issues an alarm when the time from when a gob is cut by a shear blade until before it enters a scoop is delayed in order to avoid gob insertion errors. be. On the other hand, Patent Document 1 cannot cope with a gob insertion error caused by a gradual and continuous decrease in the falling speed of the gob due to an increase in the coefficient of friction in a scoop, trough, deflector, etc. through which the gob continuously passes.

In order to solve the problem of Patent Document 1, the invention disclosed in Patent Document 2 proposes detecting the timing of arrival of the gob to the rough mold with a laser sensor placed between the outlet of the deflector and the rough mold. are doing.

Japanese Unexamined Patent Publication No. 7-10550 International Publication No. 2013/014782

However, the laser sensor as disclosed in Patent Document 2 may malfunction due to the laser light being blocked by oil smoke when swabbing a mold release agent onto a rough mold.

Therefore, an object of the present invention is to provide a gob monitoring device and a method for adjusting the position of a line sensor camera that are less likely to cause malfunctions due to swabbing oil smoke.

The present invention has been made to solve at least part of the above-mentioned problems, and can be realized as the following aspects.

[1] One aspect of the gob monitoring device according to the present invention is
a line sensor camera that images the gob falling between the coarse mold and an outlet of a deflector that guides the gob distributed into a plurality of sections with a scoop to the coarse mold;
a control device that detects gobs from a plurality of images captured by the line sensor camera and detects a delay in feeding the gobs into the rough mold;
Equipped with
The line sensor camera is arranged at a position where the falling gob in the plurality of sections is captured in the plurality of images.

[2] One aspect of the gob monitoring device according to the present invention is
a line sensor camera that images the gob falling between the coarse mold and an outlet of a deflector that guides the gob distributed into a plurality of sections with a scoop to the coarse mold;
a control device that detects gobs from a plurality of images captured by the line sensor camera and detects a delay in feeding the gobs into the rough mold;
Equipped with
The field of view of the line sensor camera intersects the direction in which the plurality of sections are lined up, and the height of the plurality of sections from the rough mold is constant.

[3] In any one aspect of the gob monitoring device,
The plurality of sections include a plurality of the rough molds for each section,
The line sensor camera may be placed at a position where a plurality of gobs falling at positions corresponding to the plurality of rough molds in each section are captured in the plurality of images without overlapping each other.

[4] In any one aspect of the gob monitoring device,
In the gob monitoring device according to claim 1 or claim 2,
The control device inserts the gob into the rough mold based on the number of images from the start of imaging by the line sensor camera to the detection of the tip of the gob after a predetermined time after the molten glass is cut by the shear blade. Delays can be detected.

[5] In any one aspect of the gob monitoring device,
In the gob monitoring device according to claim 1 or claim 2,
further including a plurality of other sections arranged next to each other in the direction in which the plurality of sections are arranged,
The line sensor camera is a first line sensor camera,
further comprising a second line sensor camera that images the falling gob at positions corresponding to the other plurality of sections,
The control device can detect a gob from a plurality of images taken by the second line sensor camera, and can detect a delay in introducing the gob into a rough mold in the other plurality of sections.

[6] One aspect of the method for adjusting the position of a line sensor camera according to the present invention is as follows:
A method for adjusting the position of a line sensor camera that images gobs falling between the outlet of a deflector and the rough mold that guide gobs distributed into a plurality of sections by a scoop into a rough mold, the method comprising:
three light sources installed at the same height directly below the deflector, which is the falling position of the gob to be imaged;
After adjusting the position of the line sensor camera so that the light source at the center is imaged at the center of the field of view of the line sensor camera, the light source of the line sensor camera is adjusted so that the light sources at both ends are imaged within the field of view. The method is characterized in that the line sensor camera is adjusted by rotating it around an axis.

[7] In one aspect of the method for adjusting the position of the line sensor camera,
An area sensor camera having a field of view that includes the center of the field of view of the line sensor camera is provided integrally with the line sensor camera, and before adjusting the position of the line sensor camera using the central light source, The positions of the line sensor camera and the area sensor camera can be adjusted such that the line sensor camera and the area sensor camera come within the field of view of the area sensor camera.

According to one aspect of the gob monitoring device according to the present invention, by detecting the light emission of the gob using a line sensor camera, it is possible to make it less susceptible to the influence of oil smoke from swabbing oil. Further, according to one aspect of the method for adjusting the position of a line sensor camera according to the present invention, it is possible to accurately and easily position the line sensor camera, which is less susceptible to the effects of swabbing oil smoke.

FIG. 1 is a front view schematically showing a gob monitoring device according to the present embodiment with some parts omitted. FIG. 2 is a plan view schematically showing the monitoring range of the line sensor camera. FIG. 3 is a diagram illustrating a plurality of images captured by the line sensor camera. FIG. 4 is a diagram schematically showing a line sensor camera used in the method for adjusting the position of a line sensor camera according to this embodiment. FIG. 5 is a diagram illustrating a method for adjusting the position of the line sensor camera according to this embodiment. FIG. 6 is a front view of a line sensor camera according to a modification.

Hereinafter, preferred embodiments of the present invention will be described in detail using the drawings. Note that the embodiments described below do not unduly limit the content of the present invention described in the claims. Furthermore, not all of the configurations described below are essential components of the present invention.

1. Gob Monitoring Device A gob monitoring device 1 according to the present embodiment will be described in detail using FIGS. 1 to 3. FIG. 1 is a front view schematically showing a gob monitoring device 1 according to the present embodiment with some parts omitted, and FIG. 2 is a plan view schematically showing a monitoring range of a line sensor camera. 3 is a diagram illustrating a plurality of images 60 captured by a line sensor camera. 1, the second line sensor camera 52 and its monitoring range are omitted, FIG. 2 shows the fields of view A1 and A2 of the line sensor camera with shading, and FIG. In FIG. 3(b), a part of the plurality of images 60 is enlarged and the black and white are reversed to make it easier to see.

As shown in FIGS. 1 and 2, the glass bottle forming machine 100 includes a spout 10 in which molten glass 30 is accommodated, and a shear cutting device that uses a shear blade to cut the molten glass 30 that is extruded from an orifice provided below the spout 10. 12, a gob distribution device 11 that distributes and guides the cut gobs 32 to a plurality of rough molds 20, a rough mold 20 arranged in a plurality of sections, for example, Sc1 to Sc10 (sections Sc1 to Sc6 in FIG. 1), The gob monitoring device 1 monitors the fall of the gob 32. The number of sections in the glass bottle forming machine 100 is not particularly limited as long as it is plural, and it may be less than 10 sections or more than 10 sections, for example, it may be 12 sections or 16 sections. . Further, the number of line sensor cameras in the gob monitoring device 1 is not particularly limited, and can be changed within a range that can accurately image the gob 32 corresponding to the rough mold 20 of each section. The gob 32 put into the rough mold 20 is formed into a parison, and then transferred to a finishing mold (not shown) and blow-molded into a glass bottle.

The molten glass 30 is at a high temperature, and the gob 32 that falls from the spout 10 and is thrown into the rough mold 20 emits light at a high temperature of, for example, 1100° C. to 1200° C. Therefore, in the image captured by the first line sensor camera 51, the gob 32 can be clearly identified as the

detection bodies

62 and 64, as shown in FIG. 3A, for example. Further, since the first line sensor camera 51 takes an image using the light emitted from the gob 32, it is not easily affected by oil smoke caused by swabbing oil. Moreover, since the first line sensor camera 51 images the gob 32 over a wide range of a plurality of sections (five sections Sc1 to Sc5 in this embodiment) without overlapping, the first line sensor camera 51 is located at a position far from the glass bottle molding machine 100. The effect of oil smoke caused by swabbing oil is reduced by installing the swabbing oil.

The shear cutting device 12 cuts the molten glass 30 to a predetermined length by moving a pair of shear blades forward and backward relative to each other using a drive mechanism (not shown). The shear cutting device 12 is electrically connected to the control device 40 and transmits a cutting signal to the control device 40 every time the molten glass 30 is cut.

The gob distribution device 11 includes, for example, a swingable scoop 14, a plurality of troughs 16, and a plurality of deflectors 18. The gob distribution device 11 can guide the hot gob 32 to the rough mold 20 of the plurality of sections Sc1 to Sc10 while sliding it. Although only the trough 16 and deflector 18 of section Sc1 are shown in FIG. 1, the plurality of troughs 16 and the plurality of deflectors 18 are provided in accordance with the number of rough molds 20 of the plurality of sections Sc1 to Sc10. The scoop 14 can be swung by a drive mechanism (not shown) so as to distribute the gobs 32 to a plurality of troughs 16.

The gob monitoring device 1 is a first line that images gobs 32 falling between the coarse mold 20 and the exit 18a of the deflector 18 that guides the gobs 32 distributed into a plurality of sections Sc1 to Sc10 by the scoop 14 to the coarse mold 20. A sensor camera 51 and a control device 40 that detects the gob 32 from a plurality of images 60 (FIG. 3) captured by the first line sensor camera 51 and detects a delay in putting the gob 32 into the rough mold 20. Be prepared.

The control device 40 is electrically connected to the shear cutting device 12, the first line sensor camera 51, and the second line sensor camera 52, and executes a detection process of the gob 32 based on a cutting signal from the shear cutting device 12, for example. Then, when a delay in the gob 32 is detected, a process is executed to output a warning signal. The control device 40 may be connected to a warning light that emits light based on a warning signal or a display that displays the warning signal. The control device 40 includes, for example, a processor such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit), an HDD (Hard Disk Drive), or an SSD (Solid State). Drive), ROM (Read-Only Memory), RAM (Random Access It is composed of a memory device such as a keyboard, a mouse, an input device such as a touch pad, a display device such as a liquid crystal display, an organic EL (Electro Luminescence) display, and a digital input/output board such as an I/O board. The CPU, storage device, etc. of the control device 40 may be not only one but a plurality of physically separated devices, for example, and in that case, they may be connected via a communication network. The control device 40 includes, for example, a detection section 41, a measurement section 43, a calculation section 45, a determination section 47, and an output section 49. At least a part of the configuration of the control device 40 may be provided integrally with the first line sensor camera 51 and/or the second line sensor camera 52. Specific processing of each part of the control device 40 will be described later.

In the embodiment of FIG. 2, the first line sensor camera 51 is arranged at a position where the falling gob 32 in the plurality of sections Sc1 to Sc5 is captured in a plurality of images 60 (FIG. 3). The first line sensor camera 51 and the second line sensor camera 52 have at least one row of line sensor camera elements, such as CCD imaging sensor elements. Using a line sensor camera enables higher resolution and faster processing than an area sensor camera. Further, by using a line sensor camera, the delay status of the gob 32 can be calculated with high accuracy from the captured image 60. Since a wide range can be monitored with one first line sensor camera 51, the gob monitoring device 1 is economically superior. Furthermore, by using the first line sensor camera 51, it is less susceptible to the influence of oil smoke caused by swabbing oil as in the conventional case. The first line sensor camera 51 and the second line sensor camera 52 detect the gobs 32 of adjacent sections in the width direction D (FIG. 2) of the field of view A1 so that it can be seen which sections Sc1 to Sc10 the gobs 32 are being detected. It is preferable to obtain images that do not overlap.

The field of view A1 of the first line sensor camera 51 intersects the direction X in which the plurality of sections Sc1 to Sc5 are lined up, and the height H1 from the rough mold 20 in the plurality of sections Sc1 to Sc5 is constant. The aspect in which the field of view A1 intersects with the direction X in which the visual field A1 is lined up is a manner in which the width direction D of the visual field A1 intersects with the direction X in which the visual field A1 is lined up without being parallel or perpendicular to it, for example, the visual field A1 is lined up as shown in the plan view of FIG. This means that it is oblique to the direction X. The field of view in the present invention is a range that can be imaged by a line sensor camera. The field of view may be a range that can be directly imaged by a line sensor camera as in this embodiment, or may be a range that can be indirectly imaged through a mirror as in a modification described later. Since the field of view A1 intersects with the alignment direction It can be avoided. Furthermore, since the height H1 of the visual field A1 is constant, the timing at which the gob 32 is detected in the visual field A1 can be made constant.

As shown in FIG. 2, it is possible to further include a plurality of other sections Sc6 to Sc10 that are lined up next to each other in the direction X in which the plurality of sections Sc1 to Sc5 are lined up. It may further include a second line sensor camera 52 that images the falling gob 32 at positions corresponding to the other plurality of sections Sc6 to Sc10. The control device 40 detects the gob 32 from the plurality of images 60 (FIG. 3) captured by the second line sensor camera 52, and detects the delay in feeding the gob 32 into the rough mold 20 in the other plural sections Sc6 to Sc10. can be detected. Although two line sensor cameras are used in this embodiment, the number is not limited to this, and depending on the monitoring range, for example, only one or three or more may be used.

Similarly to the first line sensor camera 51, the second line sensor camera 52 is also arranged at a position where the falling gobs 32 in the plural sections Sc6 to Sc10 are captured in a plurality of images. The field of view A2 of the second line sensor camera 52 intersects the direction X in which the plurality of sections Sc6 to Sc10 are lined up, and the height H1 of the plurality of sections Sc6 to Sc10 from the rough mold 20 is constant. Note that if images can be taken so that adjacent gobs 32 in the front and back or left and right directions do not overlap, the range that the first line sensor camera 51 and the second line sensor camera 52 image is not limited to five sections each, but for example, six sections each. More than one section may be imaged, or a different number of sections may be imaged. Furthermore, if all sections can be imaged with one line sensor camera, the gob monitoring device 1 may be configured to include only one line sensor camera.

Further, as shown in FIG. 2, the plurality of sections Sc1 to Sc10 may each include a plurality of rough molds 20, and in that case, the first line sensor camera 51 and the second line sensor camera 52 may be provided for each section. The plurality of gobs 32 falling at positions corresponding to the plurality of rough molds 20 are arranged at positions where they are captured in a plurality of images without overlapping each other. Specifically, as shown in FIG. 2, when two rough molds 20 are arranged in one section, not only the gob 32 of another section but also the other gob 32 of the same section as shown by the dashed line The first line sensor camera 51 and the second line sensor camera 52 are arranged at positions that do not overlap in the field of view A1. Therefore, the first line sensor camera 51 and the second line sensor camera 52 are arranged at a position away from the rough mold 20 to be monitored, and so that the field of view A1 is oblique with respect to the line-up direction X. . This arrangement makes the first line sensor camera 51 and the second line sensor camera 52 less susceptible to the influence of oil smoke. Furthermore, since a relatively large space can be provided between the first line sensor camera 51 and the second line sensor camera 52 and the rough mold 20, installation and movement of a swabbing robot or collaborative robot (not shown) can be allowed. . In addition, since the two line sensor cameras are arranged in plane-symmetrical positions and their fields of view A1 and A2 intersect, for example, even if the swabbing robot moves toward the first line sensor camera 51, the second line sensor camera Monitoring by the sensor camera 52 can continue. Note that the swabbing robot is a device that automatically sprays a mold release agent such as oil onto a rough mold etc. employed in the glass bottle molding machine 100, and moves back and forth along the direction X in which it lines up in front of the rough mold 20. It's a robot.

The plurality of images 60 shown in (a) of FIG. 3 is an image obtained by arranging

images

601, 602, . It is. In the image 60 of FIG. 3, the gobs 32 are displayed in the order of imaging from the bottom, so the gobs 32 are gradually displayed from the bottom to the top in the image 60. The images 60 may be displayed after being rearranged in the order of shooting.

The control device 40 displays images from the start of imaging by the first line sensor camera 51 and the second line sensor camera 52 until the

tips

62a and 64a of the gob 32 are detected after a predetermined time after cutting the molten glass 30 with the shear blade. The delay in charging the gob 32 into the rough mold 20 is detected based on the number of 601.... The detection unit 41 detects detection objects 62 and 64 corresponding to the falling gob 32 from among the plurality of images 60. The detection unit 41 detects at least the

tips

62a and 64a of the

detection bodies

62 and 64. The detection unit 41 can, for example, binarize the plurality of images 60 and identify the clarified white parts as the detection objects 62 and 64. The measurement unit 43 measures the number of images 601...690...693 captured by the first line sensor camera 51 until the

tips

62a, 64a detected in each section are captured, and similarly measures the number of images 601...690...693 captured by the second line sensor camera 52. The number of images taken by the user is also counted. The calculation unit 45 calculates the time from cutting by the shear blade until the

tips

62a and 64a are imaged, based on the number of measured images. This time is close to the time it takes for the gob 32 to be put into the rough mold 20. The determination unit 47 determines whether there is a delay in feeding the gob 32 into the rough mold 20 from the calculated time, and outputs the determination result. If the delay is small, production can be continued as it is; if the delay is large, the operator is notified, the operation of the rough mold 20 is stopped, the gob 32 is removed before feeding into the rough mold 20, etc. Execute processing. The output unit 49 can output signals to each part of the glass bottle molding machine 100 based on the determination result. For example, if it is determined that there is a delay in the gob 32, a warning signal can be output to the display. Further, by continuously observing the calculated time, the operator can check changes in the length of the gob. For example, when the temperature of the gob is higher than the set temperature range, the viscosity of the glass decreases and the gob becomes longer (elongates). If a change in the length of the gob is confirmed by observing the progress of the calculated time, the operator can take measures such as lowering the temperature of the molten glass 30. Furthermore, by transmitting the measured data to peripheral devices, it is possible to send alarms to peripheral devices to prevent trouble.

As described above, according to one aspect of the gob monitoring device 1, by detecting the light emission of the gob 32 using the first line sensor camera 51 and the second line sensor camera 52, it is possible to make it less susceptible to the influence of oil smoke. . Furthermore, unlike conventional laser sensors, the line sensor camera is not adjacent to the rough mold 20 but is placed apart from it, so malfunctions due to oil stains are less likely to occur and maintenance is easy.

2. Gob Monitoring Method A gob monitoring method using the gob monitoring device 1 will be described with reference to FIGS. 1 to 3.

When the shear cutting device 12 cuts the molten glass 30, a cutting signal is output from the shear cutting device 12 to the control device 40, and when the cutting signal is input to the control device 40, the first line sensor camera 51 and the second line sensor camera The control device 40 instructs the camera 52 to take an image. Imaging may be started after a delay time corresponding to a preset falling path of the gob 32 has elapsed from the cutting signal.

A plurality of images 60 captured by the first line sensor camera 51 according to a command from the control device 40 are output to the control device 40. The detection unit 41 detects detection objects 62 and 64 corresponding to the gob 32 from the plurality of acquired images 60.

The plurality of images 60 shown in (a) of FIG. 3 are a plurality of lines from an image 601 for one line ((b) of FIG. 3) obtained by the first imaging immediately after the start of imaging until the end of imaging. By arranging the

images

602, 603, . . . in the order in which they were taken, they are represented as one continuous image. In FIG. 3A, two

detection bodies

62 and 64 are imaged in a portion corresponding to the first section Sc1. The detection object 62 is an image of the gob 32 falling into the A cavity (Acav) of the rough mold 20 of the first section Sc1, and the detection object 64 is an image of the gob 32 falling into the B cavity (Bcav) of the rough mold 20 of the first section Sc1. This is an image of the gob 32 that moves. Since the gob 32 emits light at a high temperature, parts brighter than the surroundings can be detected as

detection bodies

62 and 64.

The detection unit 41 detects the tip 62a of the detection object 62 in the image 691, and detects the tip 64a of the detection object 64 in the image 694. Based on the detection result of the detection unit 41, the measurement unit 43 measures the number of images (for example, the number of captured lines is 3) from when the tip 62a is detected until when the tip 64a is detected. Since the first line sensor camera 51 captures images at fixed time intervals (for example, 0.1 ms), based on the measurement results of the measurement unit 43, the calculation unit 45 calculates the time (0 .1ms×3 lines=0.3ms). The determining unit 47 determines whether the delay time calculated by the calculating unit 45 exceeds a preset threshold. The output unit 49 outputs a warning signal to, for example, a display, flashes a warning lamp, and sounds a siren when the delay time exceeds a threshold value. Then, by checking the warning displayed on the display, the operator sprays, for example, lubricant on the trough 16 and deflector 18 corresponding to the rough mold 20 that is experiencing a delay, to prevent gob insertion errors at an early stage. be able to.

In this embodiment, the delay time is calculated using the imaging time interval, but the invention is not limited to this, and the determination may be made simply based on the number of images (the number of imaged lines) corresponding to the delay in falling of the gob 32. However, the determination may be made by calculating the angle corresponding to the delay in falling of the gob 32 by converting it into an angle corresponding to the operation cycle of the molding machine. In addition, in FIG. 3, two gobs 32 falling on two rough molds 20 in the same section Sc1 are compared, but the present invention is not limited to this, and an appropriate threshold value can be set for each section, and if the threshold value is exceeded, When the

tips

62a and 64a are detected, it may be determined that there is a delay in the timing at which the gob 32 is introduced into the rough mold 20.

3. Method for adjusting the position of the line sensor camera A method for adjusting the position of the line sensor camera will be described using FIGS. 4 and 5. FIG. 4 is a diagram schematically showing the first line sensor camera 51 used in the method for adjusting the position of a line sensor camera according to the present embodiment, and FIG. 5 is a diagram schematically showing the method for adjusting the position of the line sensor camera according to the present embodiment. FIG. FIG. 4A is a sectional view of the first line sensor camera 51 viewed from the side, and FIG. 4B is a front view of the first line sensor camera 51 viewed from the lens 513 side. (a) and (c) of FIG. 5 are views of the rough mold 20 viewed from the front, and (b) and (d) are a plurality of images 60 taken in the field of view A1 in (a) and (c). . Although the first line sensor camera 51 will be described in FIGS. 4 and 5, since the second line sensor camera 52 has a similar configuration, the same adjustment method can be implemented.

As shown in FIG. 4, the first line sensor camera 51 is provided integrally with the area sensor camera 53. As described above, the first line sensor camera 51 detects the gob 32 falling between the outlet 18a of the deflector 18 and the rough mold 20, which guides the gob 32 distributed into the plurality of sections Sc1 to Sc5 by the scoop 14 to the rough mold 20. It is used to image. The line sensor camera element 510 receives the detection light incident from the lens 513 of the first line sensor camera 51, and the half mirror 512 reflects the detection light in a direction perpendicular to the optical axis O. Sensor element 530 receives the light. The area sensor camera 53 has a field of view A3 that includes the center of the field of view A1 of the first line sensor camera 51. The first line sensor camera 51 is rotatably supported on a gonio stage 54, and the first line sensor camera 51 is rotatable around the optical axis O by the gonio stage 54.

In (a) and (c) of FIG. 5, the field of view A1 and the field of view A3 are shown shaded. The centers of the visual field A1 and the visual field A3 are set at the same position. The visual field A3 is shorter in the direction X than the visual field A1, and wider in the height direction than the visual field A1.

The method for adjusting the position of the first line sensor camera 51 is to arrange three

light sources

55, 56, and 57 installed at the same height H1 directly below the deflector 18, which is the fall position of the gob 32 to be imaged, and After adjusting the position of the first line sensor camera 51 so that the light source 55 is imaged at the center of the field of view A1 of the first line sensor camera 51, the position of the first line sensor camera 51 is adjusted so that the

light sources

56 and 57 at both ends are imaged at the center of the field of view A1. The first line sensor camera 51 is rotated around the optical axis O of the first line sensor camera 51 for adjustment.

The central light source 55 is installed directly below the deflector 18 through which the gob 32 that falls into the section Sc3 at the center of Acav among the plurality of sections Sc1 to Sc5 passes. The

light sources

56 and 57 are respectively arranged directly below the

deflectors

18 and 18 through which the gob 32 that falls into the sections Sc1 and Sc5 at both ends of the plurality of sections Sc1 to Sc5 of Acav passes. The

light sources

55, 56, 57 are fixed to the glass bottle molding machine 100 via a support 58. The

light sources

55, 56, and 57 are each fixed to the support 58 with, for example, LED spot illumination directed toward the first line sensor camera 51 side.

In the position adjustment method according to the present embodiment, first, the position of the first line sensor camera 51 is adjusted so that the central light source 55 is imaged at the center of the field of view A1 of the first line sensor camera 51. The visual field A1 for the line is narrow. Therefore, before adjusting the position of the first line sensor camera 51 using the central light source 55, the first line sensor camera 51 must be adjusted so that the central light source 55 enters the field of view A3 of the area sensor camera 53 explained in FIG. and adjust the position of the area sensor camera 53. The position of the first line sensor camera 51 is adjusted using a support (not shown) that supports the goniometer stage 54. The first line sensor camera 51 and the area sensor camera 53 can be rotated together by a goniometer stage 54. By adjusting the position of the first line sensor camera 51 using the area sensor camera 53 whose field of view A3 is wider than the field of view A1 in the height direction, the position of the first line sensor camera 51 can be easily adjusted. As a specific adjustment, when the light source 55 is not within the field of view A1, first, the light source 55 is captured within the wide field of view A3 of the area sensor camera 53, and then the light source 55 is captured in the center of the field of view A3. The height of the 1-line sensor camera 51 and the position in the line direction X are adjusted. Since the center of the visual field A1, the center of the visual field A3, and the optical axis O coincide, the first line sensor camera 51 can be adjusted to an accurate position in the height direction of the visual field A1 and the alignment direction X.

Next, the first line sensor camera 51 is rotated around the optical axis O using the goniometer stage 54 so that the

light sources

56 and 57 at both ends are imaged within the field of view A1. At the beginning of the adjustment, the field of view A1 was off from the

light sources

56 and 57 as shown in FIG. 5(a), so only the detection object 65 corresponding to the light source 55 is captured in the plurality of images 60 as shown in FIG. 5(b). However, as the first line sensor camera 51 (field of view A1) is rotated as shown in FIG. 5C, detection objects 66 and 67 corresponding to the

light sources

56 and 57 are imaged near both ends of the field of view A1. At this position, the rotation of the first line sensor camera 51 by the goniometer stage 54 is stopped and the first line sensor camera 51 is positioned.

Thereafter, by removing the

light sources

55, 56, 57 and the support 58 from the glass bottle molding machine 100, the position adjustment work is completed and the gob 32 can be monitored at an appropriate position. As described above, according to the method for adjusting the position of a line sensor camera according to the present embodiment, it is possible to accurately and easily position the first line sensor camera 51, which is less susceptible to the influence of oil smoke.

4. Modification Example A first line sensor camera 51a according to a modification example of the gob monitoring device 1 will be described with reference to FIG. FIG. 6 is a front view of a first line sensor camera 51a according to a modification. The gob monitoring device 1 according to the embodiment described above can employ a first line sensor camera 51a according to a modification instead of the first line sensor camera 51. Note that the second line sensor camera 52 can have the same configuration as the first line sensor camera 51a, and the other configurations are the same as the gob monitoring device 1, so a description thereof will be omitted here.

As shown in FIG. 6, the first line sensor camera 51a includes at least a camera body 51b and a mirror 51c. The camera body 51b is a line sensor camera having at least one row of line sensor camera elements (for example, CCD elements), and the first line sensor camera 51 in the above embodiment can be applied thereto. The camera body 51b may or may not be provided with the goniometer stage 54 (FIG. 4). The camera main body 51b has the same field of view A1 as the first line sensor camera 51 in the above embodiment through the mirror 51c. The mirror 51c includes a reflective surface that can reflect the field of view A1 toward the camera body 51b.

The first line sensor camera 51a may further include an adjustment device 51d, a fixing base 51e, and a fixing rod 51f. The mirror 51c is attached to the adjustment device 51d so that the direction of the reflective surface can be changed with respect to the camera body 51b. The adjustment device 51d is fixed at a predetermined position on the fixed base 51e. A camera body 51b and an adjustment device 51d are fixed to a fixed base 51e at predetermined positions. In the illustrated example, the camera body 51b is fixed to a fixed base 51e so that the optical axis O faces vertically downward, and the adjustment device 51d is fixed at a position where the reflective surface of the mirror 51c is approximately 45 degrees with respect to the optical axis O. The optical axis O is directed horizontally.

The adjustment device 51d may include, for example, a goniometer stage capable of changing the angle Q of the reflective surface of the mirror 51c with respect to the optical axis O, a rotation stage capable of rotating the mirror 51c around the optical axis O along the field of view A1, or the like. Can be done. The fixed base 51e can rotate around the fixed rod 51f. By adjusting the rotation of the adjustment device 51d and the fixed base 51e, the reflective surface of the mirror 51c can be adjusted so that the first line sensor camera 51a maintains the field of view A1 (field of view A2 in the case of the second line sensor camera 52) (see FIG. 2). . The fixing rod 51f can fix the fixing base 51 so that the height position of the fixing base 51e can be adjusted. According to the first line sensor camera 51a according to the modification, even if the ceiling is low and there is no space to install the camera, the position of the field of view A1 can be adjusted by embedding everything other than the mirror 51c in the ceiling.

The present invention may omit some configurations or may combine embodiments and modifications as long as the features and effects described in this application are achieved.

The present invention includes configurations that are substantially the same as those described in the embodiments (configurations that have the same functions, methods, and results, or configurations that have the same objectives and effects). Further, the present invention includes a configuration in which non-essential parts of the configuration described in the embodiments are replaced. Further, the present invention includes a configuration that has the same effects or a configuration that can achieve the same objective as the configuration described in the embodiment. Further, the present invention includes a configuration in which a known technique is added to the configuration described in the embodiment.

DESCRIPTION OF SYMBOLS 1... Gob monitoring device, 10... Spout, 11... Gob distribution device, 12... Shear cutting device, 14... Scoop, 16... Trough, 18... Deflector, 18a... Outlet, 20... Rough mold, 30... Molten glass, 32... Gob, 40... Control device, 41... Detection section, 43... Measurement section, 45... Calculation section, 47... Judgment section, 49... Output section, 51, 51a... First line sensor camera, 510... Line sensor camera element, 512 ...half mirror, 513...lens, 51b...camera body, 51c...mirror, 51d...adjusting device, 51e...fixing base, 51f...fixing rod, 52...second line sensor camera, 53...area sensor camera, 530...area sensor Element, 54... Goniometer stage, 55, 56, 57... Light source, 58... Support, 60... Multiple images, 601, 602, 603, 604, 690, 691, 692, 693, 694... Image, 62, 64, 65, 66, 67...Detection object, 62a, 64a...Tip, 100...Glass bottle molding machine, A1, A2, A3...Field of view, D...Width direction, H1...Height, O...Optical axis, Q...Angle, Sc1 ~Sc10...1st section to 10th section, X...line direction

Claims

a line sensor camera that images the gob falling between the coarse mold and an outlet of a deflector that guides the gob distributed into a plurality of sections with a scoop to the coarse mold;
a control device that detects gobs from a plurality of images captured by the line sensor camera and detects a delay in feeding the gobs into the rough mold;
Equipped with
The gob monitoring device is characterized in that the line sensor camera is disposed at a position where the falling gobs in the plurality of sections are captured in the plurality of images.
a line sensor camera that images the gob falling between the coarse mold and an outlet of a deflector that guides the gob distributed into a plurality of sections with a scoop to the coarse mold;
a control device that detects gobs from a plurality of images captured by the line sensor camera and detects a delay in feeding the gobs into the rough mold;
Equipped with
The gob monitoring device is characterized in that the field of view of the line sensor camera intersects a direction in which the plurality of sections are lined up, and the height of the plurality of sections from the rough mold is constant.
In the gob monitoring device according to claim 1 or claim 2,
The plurality of sections include a plurality of the rough molds for each section,
The line sensor camera is characterized in that the line sensor camera is arranged at a position where the plurality of gobs falling at positions corresponding to the plurality of rough molds in each section are captured in the plurality of images without overlapping each other. Gob monitoring device.
In the gob monitoring device according to claim 1 or claim 2,
The control device inserts the gob into the rough mold based on the number of images from the start of imaging by the line sensor camera to the detection of the tip of the gob after a predetermined time after the molten glass is cut by the shear blade. A gob monitoring device characterized by detecting delays.
In the gob monitoring device according to claim 1 or claim 2,
further including a plurality of other sections arranged next to each other in the direction in which the plurality of sections are arranged,
The line sensor camera is a first line sensor camera,
further comprising a second line sensor camera that images the falling gob at positions corresponding to the other plurality of sections,
The control device detects a gob from a plurality of images taken by the second line sensor camera, and detects a delay in putting the gob into a rough mold in the other plurality of sections. Monitoring equipment.
A method for adjusting the position of a line sensor camera that images gobs falling between the outlet of a deflector and the rough mold that guide gobs distributed into a plurality of sections by a scoop into a rough mold, the method comprising:
three light sources installed at the same height directly below the deflector, which is the falling position of the gob to be imaged;
After adjusting the position of the line sensor camera so that the light source at the center is imaged at the center of the field of view of the line sensor camera, the light source of the line sensor camera is adjusted so that the light sources at both ends are imaged within the field of view. A method for adjusting the position of a line sensor camera, the method comprising adjusting the line sensor camera by rotating it around an axis.
The method for adjusting the position of a line sensor camera according to claim 6,
An area sensor camera having a field of view that includes the center of the field of view of the line sensor camera is provided integrally with the line sensor camera, and before adjusting the position of the line sensor camera using the central light source, A method for adjusting the position of a line sensor camera, the method comprising adjusting the positions of the line sensor camera and the area sensor camera so that the line sensor camera and the area sensor camera enter the field of view of the area sensor camera.