JP2016033018A - Processing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a processing system capable of performing position correction accurately while restraining a cycle time from becoming long.SOLUTION: A processing system 1 performs blanking processing with a blanking part 70 while intermittently conveying a laminated sheet 6 formed by bonding a thermoplastic resin cup material sheet 2 and a seal material sheet 4 which are continuous, on a conveyance path. The processing system 1 comprises: a deviation amount determination part 104 for calculating a positional deviation amount δin a conveyance direction of the laminated sheet 6 at a position before the laminated sheet is conveyed to the blanking part 70; and a correction part that includes a moving carriage 77 for moving the position of the blanking part 70 in the conveyance direction with respect to the laminated sheet 6 so as to eliminate the positional deviation amount δ. The deviation amount determination part 104 calculates the positional deviation amount δby comparing a reference image Rretained in advance with an actual image D. The correction part eliminates the position deviation amount δwhile a region of the laminated sheet 6 where the actual image has been photographed is conveyed to a processing part.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a processing system suitable for application to, for example, a molding and filling system having a position correction function corresponding to thermal strain caused by heating a sheet-shaped resin material.

Conventionally, in various fields such as foods, beverages, cosmetics, and pharmaceuticals, a container comprising a container body having a cup-shaped housing recess for containing contents and a lid (or seal) for sealing the opening of the container body. Products containing are used.
A product including this container for containing contents can be produced, for example, as follows (Patent Document 1).
Deep drawing that dents the heated part into the same shape as the container body while heating while conveying a sheet made of thermoplastic resin for molding the container body (hereinafter referred to as cup material sheet) Perform molding. The cup material sheet is conveyed intermittently, that is, repeatedly conveyed and stopped. Assuming that the supply side of the cup material sheet is upstream, heating is performed at a predetermined position on the upstream side (referred to as P1) and a predetermined position on the downstream side (referred to as P2) during the interval in which the conveyance is stopped. Deep drawing is performed in step (b). Next, when the cup material sheet is conveyed toward the downstream side until the region heated at the position P1 reaches the position P2, the conveyance is stopped, and heating is performed at the position P1 as a subsequent process. Deep drawing is performed at the downstream position P2. As described above, intermittent conveyance, heating, and molding are repeated, but the cup material sheets that are continuously connected are molded corresponding to a plurality of containers in both the conveyance direction and the width direction. There are also products.

When the deep-drawn part is conveyed to a predetermined position (referred to as P3) on the downstream side of the position P2, the lid is prepared separately after filling the cup portion forming the container body with the contents. For example, a resin sheet (hereinafter referred to as a sealing material sheet) is attached to the cup material sheet after being aligned.
Thereafter, when the laminated sheet on which the cup material and the sealing material sheet are adhered is conveyed to a predetermined position (referred to as P4) on the downstream side, the laminated sheet is punched out in order to divide a plurality of containers into individual containers. Cut with.

In the series of steps described above, when the sealing material sheet is attached, it is necessary that the sealing material sheet is aligned at a normal position with respect to the cup material sheet. In other words, character information and graphic information including the product name are described on the sealing material sheet, but when the sealing material sheet is displaced and pasted on the cup material sheet, the character information Etc. cause a positional shift with respect to the container.
Further, in the punching process, if the laminated sheet is displaced from the normal position with respect to the punching tool, the punched product is different from the desired shape, for example, the flange portion connected to the housing recess. .
Usually, a product whose character information or the like is misaligned or a product whose punching position is misaligned is discarded as a defective product.

  As described above, since the cup sheet is heated for deep drawing, thermal strain, typically shrinkage, can occur. Therefore, even if the cup material sheet is intermittently conveyed by the conveyance device by a certain amount, if thermal distortion occurs, there is a possibility that the seal position and the punching position are displaced.

  Patent Document 2 detects the positioning marking formed on the cup material sheet at the time of deep-draw molding by, for example, a marking detection means provided at the punching position, and the detection result. Based on the above, it is proposed to adjust the punching position. According to the proposal in Patent Document 2, even if the sheet itself is stretched or contracted by thermal stress, it is possible to perform punching at a regular position.

Japanese Patent Publication No. 61-9164 JP 2001-277191 A

In Patent Document 2, after the cup material sheet is conveyed to a predetermined processing position, the cup material sheet is moved until the position of the optical fiber sensor as the marking detection means matches the position of the through hole as the marking. Patent Document 2 then performs processing such as pasting or punching of a sealing material sheet. As described above, Patent Document 2 performs alignment after correcting the position deviation after the cup material sheet is conveyed to a position where a predetermined process is performed.
When the time interval (hereinafter referred to as cycle time) for intermittently conveying the cup material sheet and the seal material sheet may be long, the proposal of Patent Document 2 is effective, but when the cycle time is short. It is difficult to apply the proposal of Patent Document 2. For example, t1 is a time required for processing such as pasting and punching, t2 is a time required for conveyance, and t3 is a time required for position correction. When applied to the proposal of Patent Document 2, since the cycle time of Patent Document 2 is t1 + t2 + t3, the cycle time becomes longer by t3 as compared with the case where position correction is not performed (t1 + t2). From the standpoint of production efficiency, there are cases where the cycle time cannot be allowed to increase by t3.
Accordingly, an object of the present invention is to provide a processing system capable of performing position correction accurately while suppressing an increase in cycle time.

For this purpose, the processing system of the present invention conveys the first continuous thermoplastic resin sheet to the first sheet that is stopped while being conveyed intermittently on the conveyance path. A predetermined process is performed at a specific part of the road.
The processing system of the present invention is provided at a specific portion on the conveyance path, and performs a predetermined process on the first sheet, and a positional deviation amount in the conveyance direction of the first sheet before being conveyed to the processing unit. And a correction unit that moves the relative position of the processing unit with respect to the first sheet in the conveyance direction so as to eliminate the positional shift amount by the shift amount determination unit.
In the processing system of the present invention, the deviation amount determination unit compares the reference image held in advance with the actual image obtained by photographing the first sheet before being conveyed to the processing unit. Find the amount of displacement. The correction unit is characterized in that the processing unit is moved so as to eliminate the positional deviation amount while the region where the actual image of the first sheet is captured is conveyed to the processing unit.

  The processing system of the present invention compares the reference image with the actual image to determine the amount of misalignment, and corrects the misalignment so that the position of the first sheet is accurately corrected for the processing unit. be able to. In addition, since the processing system of the present invention performs position correction within the transport period in which the region where the actual image of the first sheet is captured is transported to the processing unit, there is no need to provide a period t3 for performing position correction. . Therefore, the present invention is suitable for producing a product that requires a short cycle time because the cycle for producing the product can be limited to the sum of the processing period t1 and the conveyance period t2.

In the processing system of the present invention, it is preferable that the reference image is obtained by photographing a first sheet that is recognized as having no positional deviation in the same photographing region where the actual image is photographed.
In particular, the reference image is preferably obtained by photographing in a cueing step for positioning the first sheet with respect to the processing unit, which is performed at the beginning of continuous production.

  The processing system of the present invention is typically applied to a system called a molding and filling machine. The processing system includes: a molding unit that molds a storage recess having a predetermined shape on a first sheet softened by heating; a filling unit that fills the storage recess with a predetermined content; and a first sheet having a storage recess. By sticking a 2nd sheet | seat, the sealing part which seals an accommodation recessed part with a 2nd sheet | seat, and the punching part punched in a predetermined number of units so that an accommodation recessed part and its peripheral part may be included are provided. In this processing system, it is preferable to provide a deviation amount determination unit and a correction unit in one or both of the seal portion and the punching portion that are particularly required to avoid positional deviation.

  In the above processing system including a forming part, a filling part, a seal part, and a punching part, the laminate of the first sheet and the second sheet is sandwiched from the front and back between the seal part and the punching part and intermittently conveyed. It is preferable that a transport unit is provided.

  According to the processing system of the present invention, the positional deviation amount is obtained by comparing the reference image and the actual image, and correction for eliminating the positional deviation is performed, so that the position of the first sheet is accurately corrected for the processing unit. be able to. In addition, the processing system of the present invention performs position correction within the transport period in which the area where the actual image of the first sheet is captured is transported to the processing unit, so it is necessary to provide another processing period for performing position correction. There is no. Therefore, the present invention is suitable for producing a product requiring a short cycle time because the cycle for producing the product can be limited to the sum of the processing period (t1) and the conveyance period (t2).

It is a block diagram which shows the component of the shaping | molding filling system which concerns on this Embodiment. It is a figure which shows schematic structure after the pre seal part of the shaping | molding filling system of FIG. It is a figure which shows the detection method of the position shift in the shaping | molding filling system of FIG. It is a figure which shows how to obtain | require the positional offset amount in the shaping | molding filling system of FIG. It is a figure which shows the intermittent operation | movement of the shaping | molding filling system of FIG. It is a timing chart which shows operation | movement of the shaping | molding filling system of FIG. FIG. 7 is an enlarged view of a part of the timing chart of FIG. 6, where (a) shows the first shot, (b) shows the second shot, and (c) shows the third shot.

Hereinafter, the present invention will be described by taking a molding and filling system 1 shown in the accompanying drawings as an example.
The molding filling system (hereinafter simply referred to as system) 1 according to the present embodiment, after filling the plurality of cup-shaped receiving recesses 7 formed in the cup material sheet by deep drawing, affixing the sealing material sheet, Thereafter, a series of steps of producing the product P by dividing into individual containers by punching is performed.

[Configuration of system 1]
As shown in FIGS. 1 and 2, the system 1 includes a preheating unit 10, a molding unit 20, a filling unit 30, a pre-seal unit 40, a seal unit 50, an intermittent conveyance unit 60, and a punching unit 70 from the upstream side toward the downstream side. (Dispensing unit 80) is arranged in a line to form a conveyance path. The system 1 can produce the product P in an aseptic state by housing the preheating unit 10, the forming unit 20, the filling unit 30 and the pre-seal unit 40 in the aseptic chamber R.

In the system 1, an original fabric roll 3 in which a cup material sheet (first sheet) 2 prepared as a long sheet is wound in a roll shape is disposed upstream of the preheating unit 10. When producing the product P, the system 1 produces the product P by unwinding the cup material sheet 2 from the raw roll 3 and sequentially passing through the preheating unit 10 to the punching unit 70. The cup material sheet 2 may be made of a resin having a material suitable for the application, and is made of, for example, a thermoplastic resin such as polystyrene or polypropylene. The present embodiment is suitable for producing the product P in a short cycle time using a material having a small thermal strain such as polystyrene.
In addition, the upstream and downstream in the molding filling system 1 shall be determined based on the direction in which the cup material sheet 2 and the sealing material sheet 4 are conveyed. This transport direction is indicated by a white arrow d in FIGS.

The system 1 includes an original fabric roll 5 in which a sealing material sheet (second sheet) 4 prepared as a long sheet is wound in a roll shape. When producing the product P, the system 1 unwinds the sealing material sheet 4 from the raw roll 5 and supplies it toward the cup material sheet 2 after the contents are filled by the filling unit 30.
The sealing material sheet 4 may be made of a resin having a material suitable for the application, and is made of a thermoplastic resin such as polystyrene or polypropylene. Moreover, the sealing material sheet 4 can also use metal foil, for example, aluminum foil.

  The system 1 includes a collection roll 9 for collecting the laminated sheet 6 after the product P is punched out on the most downstream side.

  In the system 1, the cup material sheet 2 unwound from the raw fabric roll 3 and the sealing material sheet 4 bonded to the cup material sheet 2 in the middle are set to a stop period t1 by the intermittent conveyance unit 60 described later, and the conveyance period is set to t1. Necessary processing is performed in the stop period (= processing period) t1 while performing intermittent conveyance at t2. In other words, while the cup material sheet 2 is stopped for t1 seconds, the cup material sheet 2 is placed within a time period of t2 seconds after necessary processing is performed in each part such as the preheating unit 10 and the molding unit 20. Transport only a fixed amount. Next, the product P is produced by repeating the procedure of stopping for t1 seconds and performing necessary processing in each part such as the preheating unit 10 and the molding unit 20 during this period.

The preheating unit 10 heats and softens the cup material sheet 2 so that deep drawing can be performed in the molding unit 20. The form of the preheating unit 10 is arbitrary. For example, a planar heater that can uniformly heat a predetermined region can be used, or a heater that includes a heating region corresponding to only a portion that needs to be heated is used. Can do. These heaters can be provided on both the front and back sides of the cup material sheet 2 so as to sandwich the conveyed cup material sheet 2 from the front and back sides.
The temperature at which the cup material sheet 2 is heated by the preheating unit 10 is determined according to the resin that constitutes the cup material sheet 2.

The molding unit 20 employs a plug molding method including a plug that is a molding tool pressed against the cup material sheet 2 heated to a predetermined temperature, and a drive source that moves the plug up and down. As many plugs as the number of accommodating recesses 7 formed by one molding are prepared.
However, as the molding unit 20, for example, other molding methods such as heating / pressure forming, drum vacuum forming, pin forming, preheater pressure forming, preheater plug assist pressure forming can be applied.

The filling unit 30 is arranged along the conveyance path of the cup material sheet 2 on the downstream side of the molding unit 20 and automatically fills the receiving recess 7 (see FIG. 3) formed by the molding unit 20 with a predetermined content. To do. If the content is liquid, the filling unit 30 may cause the filling nozzle to face the housing recess 7 and drop the content C during an interval (processing period) in the process of transporting the cup material sheet 2. it can. Further, the filling unit 30 may use a mechanism for gripping the content C as long as the content C is solid.
The content C to be filled is not limited in any way, and can be applied regardless of liquid or solid, and may be a granular material or a paste-like material.

  The pre-seal part 40 is arrange | positioned downstream from the filling part 30, and bonds the sealing material sheet 4 unwound from the raw fabric roll 5 to the cup material sheet 2 filled with the contents C. However, in the pre-seal part 40, only the part of the both edges E of the cup material sheet 2 and the sealing material sheet 4 in the width direction is bonded. Bonding can be performed by heat sealing.

The seal unit 50 (processing unit) bonds portions other than both edge portions of the cup material sheet 2 and the seal material sheet 4 together. This bonding can also be performed by heat fusion.
As shown in FIG. 2, the seal unit 50 conveys the heating source 51, the supporting column 55 that supports each of the four corners of the heating source 51, the moving carriage 57 to which the lower end of the supporting column 55 is fixed, and the moving carriage 57. A drive source 58 that reciprocates in the direction and a pair of rails 59 that restrict the movement of the moving carriage 57 only in the transport direction are provided.
The seal unit 50 controls the position of the heating source 51 by operating the drive source 58 based on a command from the controller 100. The drive source 58 is composed of a servo motor, for example. The contents of this control will be described later.
In the present embodiment, the pre-sealing part 40 and the sealing part 50 are used to bond the cup material sheet 2 and the sealing material sheet 4 in two stages.

  As shown in FIG. 2, the intermittent conveyance unit 60 is disposed downstream of the seal unit 50 and between the seal unit 50 and the punching unit 70, and intermittently holds the cup material sheet 2 and the seal material sheet 4. Transport. In the process of producing the product P, the intermittent conveyance unit 60 is responsible for conveying the cup material sheet 2 and the sealing material sheet 4.

As long as conveyance and stop (interval) can be alternately repeated, the form of the intermittent conveyance unit 60 is not limited, or the intermittent conveyance unit 60 of the present embodiment includes a plurality of upper cylinders 61, lower cylinders 62, and upper cylinders 61. An upper support beam 63 to be fixed, a lower support beam 64 to which the lower cylinder 62 is supported, a pair of support columns 65 and 65 connecting both ends of the upper support beam 63 and the lower support beam 64 in the width direction, and a lower support beam A pair of rails 69, 69 that are supported so that 64 is reciprocally movable, and a drive source 68 that reciprocates the lower support beam 64 are provided.
The intermittent conveyance unit 60 operates the drive source 68 based on a command from the controller 100, so that the upper components including the lower support beam 64 move between the upstream start position and the downstream end position. The cup material sheet 2 is intermittently conveyed in the following manner.

The intermittent conveyance unit 60 stands by at the start position, and upon receiving a conveyance command from the controller 100, the piston rod of the upper cylinder 61 is lowered and the piston rod of the lower cylinder 62 is raised, thereby the laminated sheet 6 is pinched from the front and back.
The intermittent conveyance unit 60 moves the upper constituent element to the end position while holding the laminated sheet 6 between the upper cylinder 61 and the lower cylinder 62. Since the laminated sheet 6 is sandwiched, the laminated sheet 6 is conveyed downstream by the same distance as the upper component moves from the start position to the end position.
When the laminated sheet 6 finishes moving to the end position, the piston rod of the upper cylinder 61 is raised and the piston rod of the lower cylinder 62 is lowered to release the holding of the laminated sheet 6. Thereafter, the intermittent conveyance unit 60 returns to the start position and waits for a conveyance command from the controller 100 to arrive.
When a conveyance command from the controller 100 arrives, the laminated sheet 6 is sandwiched by the upper cylinder 61 and the lower cylinder 62, and thereafter, the laminated sheet 6 is conveyed intermittently by repeating the above-described procedure.

As shown in FIG. 2, the punching unit (processing unit) 70 is disposed on the downstream side of the intermittent conveyance unit 60, and includes a housing recess 7 of the laminated sheet 6 and a peripheral portion thereof in units of a predetermined number of products P. Has a punching function.
The punching unit 70 includes, for example, a punching tool that uses a die as a lower die 71 and a punch as an upper die (not shown), and a drive source (not shown) that moves the lower die 71 or the upper die up and down. can do.
The punching unit 70 includes a column 75 for supporting the lower mold 71 at each of its four corners, a movable carriage 77 to which the lower end of the pillar 75 is fixed, a drive source 78 for reciprocating the movable carriage 77 in the conveying direction, and a movable carriage. And a pair of rails 79 for restricting the movement of 77 only in the transport direction.
The punching unit 70 controls the positions of the lower mold 71 and the upper mold in the conveyance direction by operating the drive source 78 based on a command from the controller 100. The drive source 78 is composed of a servo motor, for example. The contents of this control will be described later.

  The laminated sheet 6 after the product P is punched in the punching portion 70 is wound and recovered by a recovery roll 9 disposed downstream of the punching portion 70.

  As shown in FIG. 1, the payout unit 80 is disposed below the punching unit 70, receives the product P that is punched and dropped by the punching unit 70, and conveys it toward the next process. The paying-out part 80 can be comprised from the belt conveyor arrange | positioned so that it may orthogonally cross in the conveyance direction of the cup material sheet 2, for example.

As shown in FIG. 2, the system 1 includes two container position detection units 101 and 102. The container position detection units 101 and 102 detect the position of the laminated sheet 6 at each position when performing a cueing process described later. As will be described in detail later, the cueing step is an operation in which each of the seal portion 50 and the punching portion 70 is positioned at a normal position with respect to the laminated sheet 6 in the initial stage of continuously producing the product P. .
The container position detection unit 101 is arranged on the upstream side of the seal unit 50, and is emitted from a pair of light emitting units 101A and 101a arranged at a predetermined interval in the transport direction, and the light emitting units 101A and 101a. Light receiving elements 101B and 101b for receiving the inspection light. Although the light receiving elements 101B and 101b are not shown in the drawing, the reference numerals are given to distinguish them from each other. The same applies to light receiving elements 102B and 102b described later. The light emitting means 101A and 101a are composed of optical fibers, for example, and emit light supplied from a light source (not shown) as inspection light LA and La from the side of the laminated sheet 6 during the interval. The light receiving elements 101B and 101b receive the inspection lights LA and La emitted from the light emitting means 101A and 101a and passing through the width direction of the laminated sheet 6. However, if the laminated sheet 6 is misaligned, the inspection light LA, La is blocked by the housing recess 7, so that the light receiving elements 101B, 101b can receive either the inspection light LA, La. Disappear.

FIG. 3 shows three forms in which the light receiving elements 101B and 101b receive the inspection lights LA and La.
FIG. 3A shows a state in which the light receiving elements 101B and 101b receive the inspection lights LA and La, respectively, without both of the inspection lights LA and La being blocked by the housing recess 7. When this light receiving mode is obtained, the controller 100 indicates that the laminated sheet 6 is in a normal position and no positional deviation occurs.
Next, FIG. 3B shows that the upstream inspection light LA is blocked by the accommodation recess 7, and FIG. 3C shows the state where the downstream inspection light La is blocked by the accommodation recess 7. Show. In both cases of FIG. 3B and FIG. 3C, the laminated sheet 6 is displaced, but in FIG. 3B, the accommodation recess 7 is located upstream from the normal position. In FIG. 3C, the housing recess 7 is displaced downstream from the normal position.
The light reception results in the light receiving elements 101B and 101b are sent to the controller 100, and the controller 100 operates the drive source 58 based on the light reception results to eliminate the positional deviation of the seal portion 50.

  The container position detection unit 102 is arranged on the upstream side of the punching unit 70, and is emitted from a pair of light emitting units 102A and 102a arranged at a predetermined interval in the transport direction, and the light emitting units 102A and 102a. Light receiving elements 102B and 102b for receiving the inspection light. The container position detection unit 102 is displaced from the container position detection unit 101, and the drive source 78 is operated based on the light reception results of the light receiving elements 102B and 102b, thereby causing the position shift of the punching unit 70. Except for eliminating the above, since it performs the same function as the container position detection unit 101, the following description is omitted.

  Next, the system 1 includes two deviation amount determination units 103 and 104. The deviation amount determination units 103 and 104 calculate the positional deviation amount of the laminated sheet 6 based on the image information obtained by the imaging units 103A and 104A, for example, CCD image sensors (Charge Coupled Device Image Sensor) and the imaging unit. Sections 103B and 104B.

Shift amount determining unit 103, the seal portion 50 is disposed on the upstream side, the imaging unit 103A is, before actual image D ₅₀ by imaging the laminated sheet 6 from the side during the interval of reaching the sealing portion 50 To get. The deviation amount determination unit 104 is disposed upstream of the punching unit 70, and the imaging unit 104A captures images of the laminated sheet 6 immediately before reaching the punching unit 70 from the side during the interval. Image _D70 is acquired.

Calculation unit 103B compares the reference image _{R 50} held in advance and the actual image _{D 50} obtained. The reference image R ₅₀ is image information acquired by the imaging unit 103A in a cueing process to be described later, and as shown in FIG. 4, the reference image R ₅₀ and the actual image D ₅₀ are compared with each other for the time of cueing. A shift amount δ ₅₀ of the position of the laminated sheet 6 in the conveyance direction is obtained. Information about the obtained deviation amount δ ₅₀ is sent to the controller 100, and the controller 100 operates the drive source 58 so that the deviation amount δ ₅₀ is eliminated. As will be described in detail later, this operation is performed in the process in which the laminated sheet 6 in the region to be imaged is conveyed toward the seal unit 50.
The arithmetic unit 104B compares the reference image _{R 70} held in advance and the actual image _{D 70} obtained. The reference image R ₇₀ is image information acquired by the imaging unit 104A in a cueing step to be described later, and as shown in FIG. 4, the reference image R ₇₀ and the actual image D ₇₀ are compared to determine the time of cueing. A deviation amount δ ₇₀ of the position of the laminated sheet 6 in the conveyance direction is obtained. Information about the obtained deviation amount δ ₇₀ is sent to the controller 100, and the controller 100 operates the drive source 78 so that the deviation amount δ ₇₀ is eliminated. As will be described in detail later, this operation is performed in the process in which the laminated sheet 6 in the region to be imaged is conveyed toward the punching unit 70.

Next, the system 1 includes two movement limit detection units 105 and 106 as shown in FIG.
The movement limit detection unit 105 is provided in association with the moving carriage 57 of the seal unit 50 and detects whether or not the movement carriage 57 has reached the movement limit, and the movement limit detection unit 106 is a movement carriage of the punching unit 70. 77 is provided to detect whether the movable carriage 77 has reached the movement limit.

  The movement limit detection unit 105 includes a pair of proximity switches 105A and 105a that are arranged so as to be spaced apart from each other in the transport direction and fixed in position, while the moving carriage 57 includes a contact piece 105C. The distance between the proximity switches 105A and 105a is set in a range in which the movement of the movable carriage 57 is allowed, and the contact piece 105C is fixed to the movable carriage 57 so as to be disposed between the proximity switch 105A and the proximity switch 105a. The When the moving carriage 57 moves upstream and the contact piece 105C contacts the proximity switch 105A, the proximity switch 105A notifies the controller 100 that the moving carriage 57 has reached the upstream movement limit. When the moving carriage 57 moves downstream and the contact piece 105C contacts the proximity switch 105a, the proximity switch 105a notifies the controller 100 that the moving carriage 57 has reached the downstream movement limit.

  The movement limit detection unit 106 includes a pair of proximity switches 106A and 106a that are arranged so as to be spaced apart from each other in the transport direction and fixed in position, while the moving carriage 77 includes a contact piece 106C. The movement limit detection unit 106 is the same as the movement limit detection unit 105 except that the position where the movement limit detection unit 106 is provided is different and that the distance between the proximity switches 106A and 106a is set in a range in which the movement of the movement carriage 77 is allowed. Therefore, the following description is omitted.

[Operation of system 1]
The operation of the system 1 having the above configuration will be described.
The system 1 sequentially performs a cueing process at the beginning of the production of the product P and a main production process performed following the cueing process. In the cueing process, the cup material sheet 2 and the sealing material sheet 4 are newly attached to the original fabric roll 3 and the original fabric roll 5 to start production of a new batch. This is also the case when production is resumed after stopping. Hereinafter, the cueing process and the main production process will be described in this order. In the cueing step, the cup material sheet 2 unwound from the original fabric roll 3 and the sealing material sheet 4 unwound from the original fabric roll 5 are predetermined positions where the steps of the cueing step described below are performed. It starts from the state that has been reached. This transfer can also be performed manually by an operator.

<Cueing process>
The cueing process is performed in the seal part 50 and the punching part 70, respectively. However, since the specific processing procedure of the cueing process is the same, the seal part 50 will be described below. Only the differences from 50 will be mentioned.

<Cueing at seal 50>
The cueing step is performed using the container position detection unit 101 as described below.
The container position detection unit 101 emits the inspection lights LA and La from the pair of light emitting units 101A and 101a, and transmits the detection results of the inspection lights LA and La by the light receiving elements 101B and 101b to the controller 100.
The controller 100 drives the drive source 58 and moves the movable carriage 57 according to the detection result. That is, when both the inspection lights LA and La are detected (FIG. 3A), the controller 100 determines that the position of the seal portion 50 with respect to the cup material sheet 2 and the seal material sheet 4 is appropriate, and the drive source 58. No drive command is issued.
When only the inspection light La is detected (FIG. 3B), the controller 100 determines that the seal portion 50 is displaced downstream with respect to the cup material sheet 2, and the moving carriage 57 Issues a drive command to the drive source 58 so that it moves a predetermined distance upstream.
When only the inspection light LA is detected (FIG. 3C), the controller 100 determines that the seal portion 50 is displaced upstream with respect to the cup material sheet 2, and the moving carriage 57 Issues a drive command to the drive source 58 so as to move a predetermined distance downstream.

  When the controller 100 detects only the inspection light La or only the inspection light LA, the controller 100 detects the inspection lights LA and La by the light receiving elements 101B and 101b after the movable carriage 57 has moved by a predetermined distance. Get the result. If only one of the inspection lights LA and La is detected, the movable carriage 57 is moved in the same manner as described above, and thereafter, until both the inspection lights LA and La are detected, the state shown in FIG. Repeat the procedure.

When both the inspection lights LA and La are detected, the controller 100 captures the reference sheet R ₅₀ , the reference image by photographing the laminated sheet 6 including the housing recess 7 with the imaging units 103A and 104A of the shift amount determination units 103 and 104. so as to obtain a R _70, it instructs the shift amount determining unit 103, 104. The deviation amount determination units 103 and 104 are prepared for the calculation units 103B and 104B to hold the captured reference image R ₅₀ and the reference image R ₇₀ and obtain a positional deviation amount in the production process.

<Cueing at the punching portion 70>
The cueing process in the punching unit 70 uses the container position detection unit 102 to emit the inspection lights LA and La from the pair of light emitting means 102A and 102a, and the detection results of the inspection lights LA and La by the light receiving elements 102B and 102b. Is transmitted to the controller 100, and is the same as the seal unit 50 except that the drive target is the drive source 78 and the movable carriage 77 of the punching unit 70. Therefore, the following description is omitted.

<Position correction in this production process>
When the cueing process is completed, the process proceeds to the production process.
Hereinafter, after describing a series of operations in the production process, a position correction procedure in the seal portion 50 and the punching portion 70 will be described.

  This production process is a processing period in which the operation of attaching the sealing material sheet 4 to the cup material sheet 2 in the seal portion 50 and the operation of punching out the portion corresponding to the product P of the laminated sheet 6 in the punching portion 70 are performed in parallel. t1 is provided. When the processing period t1 ends, a conveyance period t2 for conveying the laminated sheet 6 is executed, and thereafter, a cycle unit operation including the processing period t1 and the conveyance period t2 is repeatedly performed. The laminated sheet 6 remains stationary during the processing period t1 and is subjected to predetermined processing.

  For example, it is assumed that the first processing (first shot) in the cueing step shown in FIG. At this time, the N1th processing area 6A of the laminated sheet 6 corresponds to the punched portion 70, and the N5th processing area 6A corresponds to the seal portion 50. In FIG. 5, the positions of the seal portion 50, the punched portion 70, and the laminated sheet 6 are drawn so as to show the relative positional relationship between the seal portion 50, the punched portion 70, and the laminated sheet 6. Further, an N6th processing area 6A exists in front of the seal portion 50, and an N2th processing area 6A exists in front of the punching portion 70.

When the processing of the first shot (processing period t1) is completed, the laminated sheet 6 is conveyed by the intermittent conveyance unit 60, so that the N2nd processing region 6A is moved to the punching unit 70 as shown in FIG. Correspondingly, the N6th processing region 6A corresponds to the seal portion 50. This conveyance is performed during the conveyance period t2.
When the conveyance is completed, the N2th processing area 6A is punched by the punching section 70, and the cup material sheet 2 and the sealing material sheet 4 are pasted by the sealing section 50 in the N6th processing area 6A. This second shot process is also performed during the processing period t1. In addition, it transfers to this production process from the 2nd shot.
When the processing of the second shot is completed, the laminated sheet 6 is conveyed by the intermittent conveyance unit 60, so that the N3th processing region 6A corresponds to the punching unit 70, and the N7th processing region 6A corresponds to the seal unit 50. To do. This conveyance is performed during the conveyance period t2.
Thereafter, the product P is continuously produced by repeating the same procedure.

Also in this production process, in each of the seal part 50 and the punching part 70, the detection process for detecting the positional deviation amount of the laminated sheet 6 and the seal part 50 and the punching 70 are moved in order to eliminate the detected positional deviation amount. Moving processing to be performed. The system 1 performs detection processing during the processing period t1, and performs movement processing during the transport period t2.
Although the processing for correcting the positional deviation is performed in both the seal portion 50 and the punching portion 70, since the specific processing procedure is the same, the punching portion 70 will be described below. Only the differences from 70 will be mentioned.

<Detection process>
Shift amount determining unit 104, the positional deviation amount of the laminated sheet 6 is calculated in the calculating portion 104B on the basis of the actual image _{D 70} obtained by the imaging unit 104A. As shown in FIG. 4, the positional deviation amount δ ₇₀ is obtained by comparing the acquired actual image D ₇₀ with a reference image R ₇₀ held in advance. The reference image R ₇₀ is acquired by photographing by the imaging unit 104A when it is determined in the cueing step that cueing is performed, that is, there is no positional deviation.
The controller 100 acquires information regarding the obtained deviation amount δ ₇₀ , and the controller 100 obtains the operation amount of the drive source 78 so that the deviation amount δ ₇₀ is eliminated.

<Move process>
The controller 100 commands the drive source 78 to be driven with the obtained operation amount. This command includes orientation and distance. The drive source 78 moves the movable carriage 77 based on a command from the controller 100 to eliminate the positional deviation of the punched portion 70 with respect to the laminated sheet 6.

<Explanation of operation timing>
The series of operation timings of the system 1 will be described with reference to the timing charts shown in FIGS.
FIG. 6 shows an operation in which cueing is performed in the first shot and the process shifts from the second shot to the main production process, and the vertical axis indicates the processing contents in each shot.
<First shot>
In the first shot, the laminated sheet 6 is transported to a predetermined position where the product P can be punched by the punching portion 70 (transport period t2). When transported so far, the cup material sheet 2 and the seal material sheet 4 are transported to a predetermined position where the cup material sheet 2 and the seal material sheet 4 can be attached in the seal portion 50. This conveyance is performed by the intermittent conveyance unit 60.

When the conveyance is performed to the predetermined position, the operation of the intermittent conveyance unit 60 is stopped and the cueing operation is started. The contents of the cueing operation are as described above.
When the cueing operation is completed, the cup material sheet 2 and the sealing material sheet 4 are attached at the seal portion 50, and at the same time, the product P is punched at the punching portion 70 (processing period t1).
In the cueing step, during the processing period t1, the deviation amount determination units 103 and 104 capture the reference image R ₅₀ and the reference image R ₇₀ and hold them.
When the sealing process and the punching process for the first shot are completed, the second shot is started.

<Second shot>
Shift to the production process from the second shot.
The second shot is started by conveying the laminated sheet 6 and the like by a predetermined distance during the conveyance period t2.
Once transported to a predetermined position, next, during the processing period t1, sticking is performed at the seal portion 50, and punching is performed at the punching portion 70.
During the processing period t1, the deviation amount determination units 103 and 104 acquire the real image D ₅₀ and the real image D ₇₀ , and the deviation amount δ ₅₀ and the deviation are compared with the reference image R ₅₀ and the reference image R _70. The quantity δ ₇₀ is determined.
In the second shot, the operation for correcting misalignment is not performed. This is because the positional deviation correction has already been performed in the cueing.
When the sealing process and the punching process for the second shot are completed, the third shot is started.

<3rd shot>
The third shot is started by conveying the laminated sheet 6 and the like by a predetermined distance during the conveyance period t2.
For the third shot, position correction is performed during the transport period t2. In this position correction, the movable carriages 57 and 77 are moved via the drive sources 58 and 78 so that the deviation amounts δ ₅₀ and δ ₇₀ obtained in the second shot are eliminated.
When the position correction is completed and the conveyance is completed, the sticking is performed at the seal portion 50 and the punching is performed at the punching portion 70 during the processing period t1.
Similar to the second shot, during this treatment period t1, the shift amount determining unit 103, the actual image _{D 50,} acquires the actual image _{D 70,} the reference image _{R 50,} compared with the reference image _{R 70} Thus, the deviation amount δ ₅₀ and the deviation amount δ ₇₀ are obtained.
When the sealing process and the punching process for the third shot are completed, the fourth shot is started. After the fourth shot, the same procedure as the third shot is repeated.

<Effect of system 1>
Next, the effect regarding the system 1 demonstrated above is demonstrated.
First, in the main production process after cueing, the system 1 acquires the real image D ₅₀ and the real image D ₇₀ , and compares this with the reference image R ₅₀ and the reference image R _70, and the shift amount δ _50. Then, a deviation amount δ ₇₀ is obtained, and correction for eliminating the positional deviation is performed. Therefore, it is possible to accurately align the cup material sheet 2 and the seal material sheet 4 in the seal portion 50 and to position the laminated sheet 6 in the punching portion 70.

  Moreover, since the system 1 performs the position correction process during the conveyance period t2, there is no need to provide another processing period for performing the position correction. Therefore, the cycle for producing the product P is divided into the processing period t1 and the conveyance period. It can be kept at the sum of t2. Therefore, the system 1 is suitable for producing a product P that is required to have a short cycle time. For example, the product P having a short cycle time corresponds to a case where the cup material sheet 2 and the sealing material sheet 4 are made of polystyrene (PS).

Here, in order to perform the position correction process during the conveyance period t2, the system 1 performs processing for each of the sealing process and the punching process in the subsequent shots. Deviation amounts δ ₅₀ and δ ₇₀ are obtained on the upstream side. That is, since the amount of deviation is obtained in advance before the process is performed, the positions of the seal part 50 and the punching part 70 can be corrected during the period when the process is carried to the apparatus where the process is actually performed.

Next, the system 1 acquires the reference image R ₅₀ and the reference image R ₇₀ used for obtaining the deviation amount δ ₅₀ and the deviation amount δ ₇₀ every time the cueing is performed. Therefore, since the reference image R ₅₀ and the reference image R ₇₀ in the production environment similar to the main production process including the ambient temperature can be acquired, positioning can be performed with high accuracy.

Next, the system 1 includes not only one storage recess 7 but also the adjacent storage recess 7 in the search area for acquiring the real image D ₅₀ and the real image D _{70, so} that only the shift amounts δ ₅₀ and δ ₇₀ are included. In addition, the direction of the deviation can be specified.

As described above, the present invention has been described based on the embodiments. However, the configuration described in the above embodiments may be selected or changed to other configurations as appropriate without departing from the gist of the present invention. is there.
Specific elements constituting the system 1 are arbitrary. For example, a mechanism for moving the heat source 51 in the seal unit 50 to correct the heating source 51 is arbitrary, and a linear motor can be used. The mechanism is also arbitrary and can be cut by irradiating laser light instead of using a tool.

DESCRIPTION OF SYMBOLS 1 Molding filling system 2 Cup material sheet 3 Original fabric roll 4 Seal material sheet 5 Original fabric roll 6 Laminated sheet 6A Processing area | region 7 Accommodating recessed part 9 Winding roll 10 Preheating part 20 Molding part 30 Filling part 40 Pre seal part 50 Seal part 51 Heating Source 55 Post 57 Moving carriage 58 Driving source 59 Rail 60 Intermittent transfer part 61 Upper cylinder 62 Lower cylinder 63 Upper support beam 64 Lower support beam 65 Post 68 Drive source 69 Rail 70 Punching part 71 Lower mold 75 Post 77 Moving carriage 78 Drive source 79 Rail 80 Dispensing unit 100 Controller 101, 102 Container position detecting unit 101A, 101a Light emitting unit 102B, 102b Light emitting unit 103, 104 Deviation amount determining unit 103A, 104A Imaging unit 103B, 104B Calculation unit 105, 106 Movement limit detecting unit 105A, 105a Proximity switch 1 06A, 106a Proximity switch 105C, 106C Contact piece

Claims (6)

The first sheet made of a continuous thermoplastic resin is intermittently transported on the transport path, and is predetermined at a specific portion of the transport path with respect to the first sheet on which the transport is stopped. A processing system for performing processing,
A processing unit that is provided in the specific part and performs a predetermined process on the first sheet;
A deviation amount determination unit for obtaining a positional deviation amount of the first sheet in the conveyance direction before being conveyed to the processing unit;
A correction unit that moves the position of the processing unit with respect to the first sheet in the conveyance direction so as to eliminate the positional deviation amount by the deviation amount determination unit;
The deviation amount determination unit
The positional deviation amount is obtained by comparing a reference image held in advance with an actual image obtained by photographing the first sheet before being conveyed to the processing unit,
The correction unit is
Moving the processing unit so as to eliminate the positional deviation amount while the region where the actual image of the first sheet is photographed is conveyed to the processing unit;
A processing system characterized by that. The reference image is
In the same shooting area where the actual image is shot, it is obtained by shooting the first sheet that is recognized as having no displacement.
The processing system according to claim 1. The reference image is
It is obtained by photographing in a cueing step for positioning the first sheet with respect to the processing unit, which is performed at the beginning of continuous production.
The processing system according to claim 2. The actual image is
Photographed while a predetermined process in the processing unit is being performed on the first sheet,
The processing system as described in any one of Claims 1-3. The processing system includes:
A molding part that molds a housing recess having a predetermined shape in the first sheet softened by heating;
A filling portion for filling the receiving recess with a predetermined content;
A seal portion that seals the housing recess with the second sheet by attaching a second sheet to the first sheet in which the housing recess is formed;
A punched portion that is punched in a predetermined number of units so as to include the accommodating concave portion and the peripheral portion thereof, and
One or both of the seal part and the punching part are provided with the shift amount determination part and the correction part,
The processing system as described in any one of Claims 1-3. Between the seal part and the punching part in the transport direction,
A conveyance unit is provided that intermittently conveys the laminate of the first sheet and the second sheet from the front and back sides thereof.
The processing system according to claim 5.

Images