JP2001261150A - Carriage position detection device for carried object and can barrel handling device using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carriage position detection device for a carried object capable of easily and rapidly detecting a carriage position of the carried object carried by a turret, and to provide a can barrel handling device using it. SOLUTION: This carriage position detection device 19 for the carried object comprises identifiers 16, a sensor F and a calculation device 18. The plural identifiers 16 corresponding to respective rotating pedestals D are provided to the second turret 12 having the plural rotating pedestals D at positions distant from the rotation center of the second turret 12 such that the identifiers 16 have equal positional relation to the rotating pedestals D corresponding to the respective identifiers 16. At least one position among positions of brief residence of the respective identifiers 16 accompanying intermittent rotation of the second turret 12 is provided with the sensor F detecting the carried identifier 16. The calculation device 18 specifies the rotating pedestal D corresponding to the identifier 16 on the basis of a detection signal of the sensor F and calculates a position of the rotating pedestal D.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting the position of an object to be conveyed by a turret which conveys an object by intermittently rotating, and a can body handling apparatus for conveying a can body using the turret. About.

[0002]

2. Description of the Related Art As a device for transporting an object to be transported, for example, a device using a turret having holding portions for holding the object to be transported at a plurality of positions in a circumferential direction is known. As such an apparatus, for example, a can body handling apparatus for transporting a can body in a manufacturing process of a can body of a beverage can is known. Examples of the manufacturing process of a beverage can include a process (surface inspection) for inspecting, for example, defective molding of the can body and defective painting of the surface of the can body. As a can body handling device used in this step, for example, a turret provided with holding portions for holding the can body at a plurality of positions in a circumferential direction is provided, and the turret is used to perform a surface inspection on the can body before the inspection. It is known to sequentially carry the can body after the inspection onto the stage and sequentially carry out the can body after the inspection from the inspection stage and send it to the subsequent process.

Further, in this can body handling apparatus, a sorting mechanism is provided at a stage subsequent to the inspection stage, and the can body that has been inspected is subjected to a subsequent stage processing by the sorting mechanism when the can body is a good can. It is sent out to the process, and if the can body is defective, it is removed from the production line.

The sorting mechanism switches the delivery destination according to the quality of the can body by comparing the can body sent from the turret with the result of the surface inspection of the can body.
In the can body handling device 1, it is necessary to grasp the transported position of the can body that has been inspected. Conventionally, for example, one dog is provided at an arbitrary position in the circumferential direction of the turret, and a sensor for detecting the dog is provided at a fixed position around the turret,
The position where the sensor detects the dog in the turret that rotates intermittently is set as the reference position in the rotation direction, and the control device monitors the rotation angle of the turret thereafter.
Thereby, the position of each holding portion of the turret (the position of the can body) is detected, and the transported position of the can body that has been inspected is grasped.

[0005]

In the can body handling apparatus, for example, when the can body handling apparatus is started, or when the operation of the can body handling apparatus is temporarily interrupted and the operation is resumed, the control device controls each holding. If the position information of each holding unit is not provided, it is necessary to make the control device detect the position of each holding unit. However, in the conventional transport position detecting device, it is necessary to rotate the turret to the reference position manually, for example, in order for the control device to detect the position of each holding unit. Was the cause.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an apparatus for detecting a transport position of a transported object which can easily and quickly detect the transport position of the transported object transported by a turret. An object of the present invention is to provide a can body handling device using the same.

[0007]

According to a first aspect of the present invention, there is provided an apparatus for detecting a transport position of an object to be transported, wherein a plurality of holding portions for holding the object to be transported are provided at substantially equal intervals in a circumferential direction. In the turret that rotates the intermittently in the circumferential direction and conveys the conveyed object, at a position separated from the rotation center of the turret, the turret corresponds to each of the holding units, and the positional relationship with the corresponding holding unit. Among a plurality of identifiers provided as equal, and a place where these identifiers temporarily stay with intermittent rotation of the turret,
At least one location, a sensor that detects the identifier conveyed to this location, and identifies the holding unit corresponding to the identifier from information on the identifier detected by the sensor,
An arithmetic unit that detects a position of the holding unit based on a positional relationship of the identifier with respect to the holding unit.

In the apparatus for detecting the position of a conveyed object, the turret is provided with holding portions at substantially equal intervals in a circumferential direction of the turret. A plurality of identifiers are provided in correspondence with each other and in the same positional relationship with the corresponding holding unit. Then, among the places where these identifiers stay with the intermittent rotation of the turret, the identifiers conveyed to at least one place are detected by the sensor. Since the identifier indicates the corresponding holding unit, no matter which identifier the sensor detects, based on the detection signal of the sensor, the arithmetic unit identifies the holding unit corresponding to the identifier, The position of the holding unit is detected. That is, the position of the holding unit is detected regardless of the orientation of the turret. Here, the identifier and the holding unit may be provided at positions that are in phase with the rotation center of the turret,
Further, the phases may be shifted from the rotation center. For example, the identifier may be provided so as to be transported to a position facing the sensor while the corresponding holding unit is transported to a target position (for example, an inspection stage or the like).

According to a second aspect of the present invention, in the transport position detecting apparatus for an object to be transported, the identifier has a detector provided with a different number of installations for each of the corresponding holding units, and the sensor comprises The number of the detectors provided in the identifier is detected, and the arithmetic device specifies the holding unit corresponding to the identifier from the number of the detectors detected by the sensor. In the transport position detecting device for the transported object configured as described above, the holding unit corresponding to the identifier is represented by the number of detectors installed, and the arithmetic unit calculates the identifier from the number of detectors detected by the sensor. Is specified. Here, the sensor can be configured by, for example, a plurality of proximity sensors provided to face the identifier. In this case, holes or protrusions are provided at positions facing the proximity sensors on the turret with different numbers for the holders corresponding to the respective identifiers, and these are used as detectors. The proximity sensor detects holes or protrusions formed at positions facing each other in the turret, and therefore detects the presence of the holes or protrusions among these proximity sensors. Based on the number of sensors, the holding unit corresponding to the identifier is specified.

According to a third aspect of the present invention, in the apparatus for detecting a transport position of an article to be transported, the identifier includes a detector provided in a different arrangement for each of the corresponding holding sections, and the sensor includes the detector. The arrangement of a child is detected, and the arithmetic unit specifies the holding unit corresponding to the identifier from the arrangement of the detector.

[0011] In the transport position detecting apparatus for an article to be transported configured as described above, the holding section corresponding to the identifier is represented by the arrangement of the detector, and the arithmetic unit determines the arrangement of the detector detected by the sensor. The holding unit corresponding to the identifier is specified. Here, the sensor can be configured by, for example, a plurality of proximity sensors provided to face the identifier. In this case, holes or protrusions are provided at positions facing the proximity sensors on the turret with different arrangements for the respective holders corresponding to the respective identifiers, and these are used as detectors. The proximity sensor detects holes or protrusions formed at positions facing each other in the turret, and therefore detects the presence of the holes or protrusions among these proximity sensors. Based on the arrangement of the sensors, the holding unit corresponding to the identifier is specified.

According to a fourth aspect of the present invention, in the apparatus for detecting a transported position of an object to be transported, the identifier has a detector provided with a different number of installations and different arrangements for each of the corresponding holding units, and the sensor is The number of arrangements and arrangement of the detectors are detected, and the arithmetic unit specifies the holding unit corresponding to the identifier from the number of arrangements and arrangement of the detectors.

[0013] In the transport position detecting apparatus for the transported object thus configured, the holding unit corresponding to the identifier is represented by the number and arrangement of the detectors, and the arithmetic unit detects the detectors detected by the sensor. The holding unit corresponding to the identifier is specified from the number of installations and the arrangement. Here, the sensor can be configured by, for example, a plurality of proximity sensors provided to face the identifier. In this case, holes or protrusions are provided at positions facing the proximity sensors on the turret with different numbers and arrangements of the holders corresponding to the respective identifiers, and these are used as detectors. The proximity sensor detects holes or protrusions formed at positions facing each other in the turret, and therefore detects the presence of the holes or protrusions among these proximity sensors. Based on the number and arrangement of the sensors, the holding unit corresponding to the identifier is specified. Here, a different identification number may be given to each holding unit of the turret, and each identifier may indicate, as a binary number, the identification number of the holding unit corresponding to the identifier according to the number and arrangement of detectors. .

According to a fifth aspect of the present invention, there is provided a can body handling apparatus for use in a processing apparatus for performing a process on a can body on a processing stage, wherein the can body before processing is sequentially placed on the processing stage. It has a transport mechanism for carrying in and sequentially carrying out the processed can body from the processing stage, and as the transport mechanism, a plurality of holding units for holding the can body are provided at substantially equal intervals in a circumferential direction. Having a turret that rotates the intermittently in the circumferential direction and conveys the can body,
As a device for detecting the transfer position of the can body by the turret, the device for detecting a transfer position of an object to be transferred according to any one of claims 1 to 4 is used. In the thus configured can body handling device, the transport position of the can body is detected using the transported object position detecting device according to any one of claims 1 to 4.

[0015]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG. Here, in the present embodiment, as an example of a can body handling device using a device for detecting a transfer position of a transferred object, a device used in a surface inspection device (processing device) for inspecting the surface of a can body is shown. FIG. 1 is a front view schematically showing a surface inspection apparatus using the can body handling apparatus of the present invention, FIG. 2 is an enlarged view of a main part of the can body handling apparatus shown in FIG. 1, and FIG. It is a top view which shows a mechanism and the conveyance position detection apparatus of the conveyed object of this invention.

As shown in FIG. 1, a can body handling device 1 constitutes a part of a surface inspection device 2,
A supply mechanism 4 for taking in the can body C from the preceding step and a can body C taken from the supply mechanism 4 are sequentially inspected (process stage) on a substantially box-shaped base 3 standing on the floor F.
And a transport mechanism 5 for sequentially transporting the can body C having undergone the surface inspection from the inspection stage, and receiving the inspected can body C from the transport mechanism 5 and comparing the can body with the inspection result. A can body without defects (good cans) is sent out to a subsequent process, and a can body with abnormalities (defective cans) is discharged from a production line. The surface inspection apparatus 2 rotates the can body C around its axis on an inspection stage, for example, and the line camera V
The surface of the can body C is inspected by taking an image with an (imaging device) and comparing the image taken by the line camera V with a reference image. In the present embodiment, as the surface inspection device 2, an inspection stage is provided at two places, and the surface inspection of the can body C is performed twice.

As shown in FIG. 1 and FIG.
The first turret 11 that holds the can body C taken in from the preceding step at a plurality of locations on the outer periphery and intermittently rotates the can body C by a predetermined angle and sends out the can body C to the transport mechanism 5 intermittently. Have. Here, the first turret 1
1 is for holding the outer peripheral surface of the can body C. As shown in FIG. 2, the transport mechanism 5 is provided with a second turret 12 intermittently rotating by a predetermined angle, and a plurality of the transport mechanisms 5 on the outer periphery of the second turret 12 at substantially equal intervals in the circumferential direction. A substantially disk-shaped rotary pedestal D (holding portion) is provided.
These rotating pedestals D respectively hold the can body C and
And the second turret 12 is rotatable about its axis.
2 intermittently in the rotation direction α. In the present embodiment, a total of eight rotating pedestals D are provided. Further, in the second turret 12, an outer peripheral portion including the rotary pedestal D is provided at a position closer to the base 3 than the first turret 11, and the first and second turrets 11 and 12 interfere with each other. Not to be.

The first and second turrets 11 and 12 are rotated by the first and second turrets 11 and 12.
, The can body C is sequentially supplied. Here, among the places where the intermittently moved rotary pedestal D temporarily stays, at least a place where the can body C is delivered from the supply mechanism 4 (first delivery position P1) moves in the rotation direction α. The spot where the inspection is performed is defined as an inspection stage. The present embodiment shows an example in which two inspection stages are provided (a first inspection stage S1 and a second inspection stage S2 in order from the side closer to the delivery position P1). Then, the can body handling device 1 converts the rotating pedestal D carried into the first and second inspection stages S1 and S2 into
Each of them has a rotation mechanism (not shown) for rotating around the axis of the can body C held.

The sorting mechanism 6 is arranged so that the rotation pedestal D temporarily stays in the rotation direction α at least from the inspection stage.
(The second delivery position P2), the can body C is received from the rotary base D. In the present embodiment, a position moved four steps in the rotation direction α from the first inspection stage S1 is defined as a second transfer position P2. In addition, the sorting mechanism 6
As a mechanism for receiving and transporting the can body C from the second turret 12, for example, the third turret 14
Is used. The third turret 14 holds the outer peripheral surface of the can body C. In the second turret 12, the outer peripheral portion including the rotating pedestal D is the third turret 14.
The second and third turrets 12 and 14 do not interfere with each other. These first, second and third turrets 11, 1
Reference numerals 2 and 14 are connected to a drive device (not shown), and are intermittently driven to rotate in synchronization with each other. Between these, the delivery of the can body C is performed according to the rotation.

As shown in FIG. 3, in the transport mechanism 5,
At a position separated from the rotation center of the second turret 12,
A plurality of identifiers 16 are provided, each corresponding to each rotating base D and having the same positional relationship with respect to each corresponding rotating base D. In the present embodiment, the identifier 16
Is provided between the rotary pedestals D on the outer peripheral surface of the second turret 12, and among the rotary pedestals D, the rotary pedestal D provided from the identifier 16 to the rear in the rotation direction of the second turret 12. It corresponds to. The panel 3a of the base 3 has at least one of the locations where the identifiers 16 temporarily stay with the intermittent rotation of the second turret 12, and the identifiers conveyed to this location. 1
6 is provided. In the present embodiment, the sensor F is provided at a position on the outer peripheral surface of the second turret 12 facing a portion located between the first inspection stage S1 and the second inspection stage S2.

The sensor F is connected to an arithmetic unit 18. The arithmetic unit 18 specifies the rotary base D corresponding to the identifier 16 based on the detection signal of the sensor F, and calculates the position of the rotary base D. Things. In the present embodiment,
The identifier 16 detected by the sensor F corresponds to the rotating pedestal D carried into the first inspection stage S1, and the arithmetic unit 18 calculates the first inspection stage S1 from the information of the identifier 16 detected by the sensor F. The rotating pedestal D carried into the is identified. This information is transmitted to a control device (not shown) of the can body handling device 1. The identifier 16, the sensor F, and the arithmetic unit 18 constitute a transport position detecting device 19 for detecting the transport position of the can C transported by the second turret 12.

The identifier 16 has a detector provided in a different number and arrangement for each corresponding rotating pedestal D. In the present embodiment, a hole H formed on the outer peripheral portion of the second turret 12 is used as the detector (for example, a protrusion provided on the outer peripheral portion of the second turret 12 is used as the detector. May be). This hole is provided on the outer peripheral surface of the second turret at a position where each sensor F faces. Further, as the sensor F, it is desirable to use a sensor capable of detecting the presence of the hole H (or the protrusion) in a non-contact manner. For example, a proximity sensor or the like can be used.

In the present embodiment, an identification number (for example, number 0 to number 7) is given to each rotary base D (in FIGS. 3 and 4, the identification number of each rotary base is given a reference numeral. ). Each identifier 16 has a corresponding rotating base D
(For example, if there is a hole H at a position facing each sensor F on the outer peripheral surface of the second turret 12, 1 is a hole number). If there is no H, it represents 0). Then, the arithmetic unit 18 manages each rotating base D by its identification number. In this case, each sensor F
For example, it is desirable to arrange the second turret 12 so as to be substantially linear along either the circumferential direction or the thickness direction of the second turret 12. In this embodiment, a total of three sensors F1, F2, and F3 are provided on a substantially straight line, and the arithmetic unit 18 calculates the number of the sensors F that have detected the holes H in these sensors F and the arrangement thereof. , The identification number of the rotating base D indicated by the identifier 16 is determined. FIG. 4 shows an example of the correspondence between the arrangement of the holes H and the identification numbers indicated by the identifiers 16. In FIG. 4A, the rotating base D whose identification number is 1 is shown.
4 shows the identifier 16 corresponding to the rotary base D5 whose identification number is No. 5. FIG. (The range surrounded by the two-dot chain line indicates the position where each sensor F faces in the second turret 12).

Hereinafter, the operation flow of the can body handling device 1 thus configured will be described. First,
The can body C taken into the supply mechanism 4 from the previous step is:
When the first turret 11 rotates intermittently, the first turret 11 is transferred to the rotating base D of the second turret 12 at the first transfer position P1. And the second turret 1
2 rotates intermittently, the rotating pedestal D that has received the can body C is carried into the first inspection stage S1, and the rotating pedestal D is specified by the transport position detecting device 19 for the transported object, and this rotation is performed. A surface inspection of the can body C held on the pedestal D is performed. The result of the surface inspection of the can body C is managed by an arithmetic unit (not shown) together with the identification number of the rotating pedestal D carried into the first inspection stage S1 at the time of inspection, and the can body C is sorted by the sorting mechanism 6. Used when receiving.

The rotation pedestal D carried into the first inspection stage S1 is specified by the sensor F detecting the identifier 16, and the arithmetic unit 18 calculating the identification number based on the detection signal. And the can body handling device 1
The rotation of the second turret 12 thereafter is monitored by a control device (not shown), and the position of the can C that has been inspected in the first inspection stage S1 is grasped.

After the inspection at the first inspection stage S1, the second turret 12 is further rotated by one stage, so that the can body C inspected at the first inspection stage S1 is moved to the second inspection stage. It is carried into S2. Then, the can body C is inspected in the same manner as the inspection in the first inspection stage S1.

Then, when the second turret 12 which has completed the inspection in the first inspection stage S1 rotates four steps,
The can body C is delivered from the rotating pedestal D to the sorting mechanism 6. Based on the inspection results at the first and second inspection stages S1 and S2, the cans C passed to the sorting mechanism 6 are transferred to the transport path 6a leading to the subsequent process, and the defective cans are turned to the production line based on the inspection results at the first and second inspection stages S1 and S2. Is sent out to a discharge path 6b provided separately from the
reference).

The transport position detecting device 19 for the transported object configured as described above and the can body handling device 1 using the same.
Accordingly, the position of the rotary pedestal D can be detected regardless of the orientation of the second turret 12, so that the transport position of the can body C can be detected easily and quickly. In addition, the identifier 16 and the sensor F can have a simple configuration, and the installation cost of the transport position detecting device 19 for the transported object can be reduced.

In the above embodiment, the identifier 16 is
An example in which the number and arrangement of the inspection elements (holes H) for each of the corresponding rotating pedestals D is used to indicate the corresponding rotating pedestal D was used. However, the present invention is not limited to this example. For example, FIG. As described above, the identifier 16 may be simply determined by changing the number of detectors provided for each of the corresponding rotary pedestals D, and specifying the rotary pedestal D corresponding to the identifier 16 from the number of sensors F that have detected the detectors. Good. In this case, the number of detectors provided may be different for each identifier 16, and may be the same as the identification number of the corresponding rotary base D, for example. In addition, as shown in FIG. 5 (b), the identifier 16 is simply changed for each of the corresponding rotating pedestals D, and the arrangement of the sensor F that has detected the detector among the sensors F is changed. Therefore, the rotary pedestal D corresponding to the identifier 16 may be specified. In this case, for example, an identification number or the like is also given to each sensor F, and a detector is provided at any one of the positions where the sensors F face each other in the second turret 12, and the sensor F of the sensor F that has detected the detector is provided. From the identification number, the rotary pedestal D corresponding to the identifier 16 can be specified. Further, the detector is not limited to the hole H, and may be configured by, for example, a protrusion projecting from the outer peripheral surface of the second turret 12 toward the sensor F.

[0030]

According to the present invention, the following effects can be obtained.
According to the transported object position detecting device and the can body handling device using the same, the position of the holding portion can be detected regardless of the orientation of the turret, so that it is easy and quick. The transport position of the transported object can be detected at the same time.

According to the apparatus for detecting the position of a conveyed object and the can handling apparatus using the apparatus, the identifier and the sensor can be simplified. In addition, it is possible to reduce the installation cost of the device for detecting the transport position of the transported object.

[Brief description of the drawings]

FIG. 1 is a front view schematically showing a surface inspection apparatus using a can body handling apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of the can body handling device shown in FIG.

FIG. 3 is a plan view showing a transfer mechanism of the can body handling device and a device for detecting a transfer position of a transferred object according to the present invention.

FIG. 4 is a diagram showing an example of a correspondence between the arrangement of holes H (detectors) and an identification number indicated by an identifier 16, and in FIG. 4 (a), it corresponds to a rotating pedestal D having an identification number of 1; FIG. 4B shows the identifier 16 corresponding to the rotating base D whose identification number is No. 5.

FIG. 5 is a diagram showing another example of the configuration of the identifier 16, and FIG. 5 (a) shows an example in which the identifier 16 has a configuration in which the number of detectors installed is simply different for each of the corresponding rotating pedestals D; FIG. 5B shows an example in which the identifier 16 is configured such that the arrangement of the detectors is simply different for each corresponding rotary base D.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 can body handling device 2 surface inspection device (processing device) 5 transport mechanism 12 second turret 16 identifier 17 sensor 18 arithmetic device 19 transported object transport position detecting device C can drum (transported object) D rotating pedestal (holding) Part) H hole (detector)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3F072 AA07 AA27 GA03 GB07 GB10 GE02 GE03 GE09 GG06 JA05 KC01 KC05 KC06 KC12

Claims (5)

[Claims] 1. A turret which is provided with a plurality of holding portions for holding an object to be conveyed at substantially equal intervals in a circumferential direction and intermittently rotates in a circumferential direction to convey the object to be conveyed. A plurality of identifiers respectively corresponding to the respective holding portions at positions distant from the center, and provided with the same positional relationship with respect to the respective corresponding holding portions, and these identifiers are associated with intermittent rotation of the turret. A sensor for detecting the identifier conveyed to the location at least at one of the locations where the sensor temporarily stays, and identifying the holding unit corresponding to the identifier from information on the identifier detected by the sensor, and And a calculating device for detecting the position of the holding portion based on the positional relationship with respect to the holding portion. 2. The method according to claim 1, wherein the identifier has a detector provided with a different number of installations for each corresponding holding unit, and the sensor detects an installation number of the detectors included in the identifier, 2. The apparatus according to claim 1, wherein the arithmetic unit specifies the holding unit corresponding to the identifier based on the number of detectors installed by the sensor. 3. The identifier has a detector provided with a different arrangement for each corresponding holding unit, the sensor detects the arrangement of the detector, and the arithmetic unit detects the detector. 2. The storage device according to claim 1, wherein the holding unit corresponding to the identifier is specified based on a child arrangement.
3. The transfer position detecting device for a transferred object according to claim 1. 4. The sensor according to claim 1, wherein the identifier includes a detector provided with a different number of installations and arrangements for each corresponding holding unit, wherein the sensor detects the number of installations and the arrangement of the detectors, 2. The apparatus according to claim 1, wherein the arithmetic unit specifies the holding unit corresponding to the identifier based on the number and arrangement of the detectors. 5. A can body handling device used in an inspection apparatus for inspecting a can body on an inspection stage, wherein the can body before inspection is sequentially carried into the inspection stage, and the inspection is completed. A transport mechanism for sequentially carrying out the inspection stage from the inspection stage, and a sorting mechanism for receiving the inspected can body from the transportation apparatus and sorting the can body into good cans and defective cans according to the inspection result by the inspection apparatus. A plurality of holding portions for holding the can body are provided at substantially equal intervals in a circumferential direction, and a turret for intermittently rotating in a circumferential direction to transfer the can body is provided as the transfer mechanism. The transport position detecting device for the transported object according to any one of claims 1 to 4, wherein the transport position detecting device for the transported object of the can body that has been inspected by the turret is used. Transfer position detection device Based on the information of the detected position of the said can body, the can body handling apparatus characterized by Ru test results the can barrel.