JP5368405B2 - Article supply device in horizontal bag making and filling machine - Google Patents

Description

  The present invention relates to an article supply apparatus that supplies articles toward a film formed by bag making means in a horizontal bag making and filling machine.

  In a horizontal bag making and filling machine that forms a belt-shaped film drawn from a raw roll by bag making means, and after filling an article in the formed film, the film is subjected to vertical sealing and horizontal sealing to obtain a packaged product. Therefore, it is required to supply the article to the center of the width of the accommodation region in the hollow-formed film, and various proposals have been made for aligning the article with the center line along the conveying direction.

  For example, in Patent Document 1, side belts having inclined surfaces that are inclined toward the conveyance center line are arranged on both sides of a positioning conveyor arranged just before the bag making machine entrance, and the side belt is driven in synchronization with the positioning conveyor. Thus, the article passing between the side belts is configured to move in alignment with the conveyance center line. Moreover, in patent document 2, the conveyance surface by which a strip | belt-shaped wrapping paper is mounted and conveyed in the upstream of a bag making machine is comprised by a display means, and the position which should mount the article | item on a wrapping paper is displayed by a display means. The operator can place the article at an appropriate position on the wrapping paper.

Japanese Patent Publication No. 7-67922 Japanese Patent No. 3738093

  In the supply device of Patent Document 1, when supplying articles such as confectionery such as buns and cakes, which are sticky or soft and easily damaged on the surface, they are transferred from the transfer center line. If the article to be slid on the conveyor is forcibly moved toward the conveyance center line, the bottom of the article may be peeled off or the article itself may be deformed due to frictional resistance with the conveyor surface, resulting in a reduction in product value. The problem that becomes a defective product is pointed out.

  Further, in a configuration in which an operator places an article directly on a wrapping paper as in Patent Document 2, when the processing speed is increased to improve productivity, the operator is set to the placement position displayed by the display unit. The article cannot be placed with a margin, and the article is likely to be displaced from the placement position, and there is a limit to improving the processing speed. In particular, in the case of an article such as a confectionery such as a bun or cake that has adhesiveness that adheres to the film, the article is displaced in the left-right direction with respect to an appropriate placement position on the wrapping paper. If it is placed, one side will be lifted by the film without slipping and moving when both sides of the film are raised by the downstream bag making machine, and the article will be deformed or damaged. This may cause problems such as

  That is, the present invention has been proposed to solve this problem in view of the above-described problems inherent in the conventional article supply apparatus, and is an article whose surface is soft and easily damaged, such as a bun or cake. Even so, it is an object of the present invention to provide an article supply apparatus in a horizontal bag making and filling machine capable of supplying the article toward the center of the width of the accommodation area of the film formed by the bag making means without damaging or deforming the article. And

In order to overcome the above-mentioned problems and achieve the intended purpose, an article supply apparatus in a horizontal bag making and filling machine according to the present invention comprises
An article supply device in a horizontal bag making and filling machine that supplies articles into a film formed by bag making means,
A belt conveyor that is rotated by a drive mechanism so as to displace the conveyance end point in the left-right direction with the upstream side as a fulcrum, and transports articles placed at predetermined intervals toward the bag making means,
A first sensor that detects a left-right placement position of an article conveyed by the belt conveyor,
Based on the placement position of the article when detected by the first sensor, the conveyance end is displaced in the left-right direction toward a position where the article can be fed into the center of the width of the film storage area. The drive mechanism is driven and controlled to rotate the belt conveyor.

  In the invention which concerns on Claim 2, the mounting position of the articles | goods when detected by the said 1st sensor was divided in the left-right direction by the width unit smaller than the difference of the width | variety of the storage area | region of the said film, and the width | variety of an article | item. The gist is that the drive mechanism is driven and controlled so as to rotate the belt conveyor by the width unit of the conveyance end corresponding to the width of each of the partition areas, by specifying which of the plurality of partition areas. To do.

  The gist of the invention according to claim 3 is that the drive mechanism includes a motor, and the belt conveyor is rotated by the motor.

  In the invention which concerns on Claim 4, it is provided with the 2nd sensor which detects the goods which came off the right and left outside from the permissible line in the horizontal direction both sides of the belt conveyor in the upstream rather than the detection position by the 1st sensor, The gist is that the belt conveyor is stopped based on the article detection by the second sensor.

  In the invention which concerns on Claim 5, the said belt conveyor is comprised from the 1st belt conveyor and the 2nd belt conveyor connected to the downstream of this 1st belt conveyor, The conveyance speed of a 2nd belt conveyor is made into 1st belt conveyor. The gist is that it is set to be higher than the conveying speed of the one-belt conveyor and the same as the conveying speed of the film formed by the bag making means.

  In the invention which concerns on Claim 6, it is provided with the 3rd sensor which detects the articles | goods conveyed by the said belt conveyor, The structure which drives-controls the conveyance operation of a film so that the detection articles | goods and film may be aligned by this 3rd sensor. The summary is as follows.

  The gist of the invention according to claim 7 is that the first sensor detects the placement position of the article at the timing when the article is detected by the third sensor.

  In the invention according to claim 8, both longitudinal edges of the film supplied from above to the bag making means are polymerized below the bag making means, and an empty space formed below the bag making means. A transfer conveyor for supplying articles transferred from the belt conveyor into the film is disposed at the transfer conveyor, and the transfer speed is set to be the same as the transfer speed of the film formed by the bag making means. In addition, the gist is that it is configured to travel in conjunction with the film transport operation.

According to the first aspect of the present invention, the article conveyed by shifting from the center of the width of the film accommodating area formed by the bag making means is slid on the belt conveyor, for example, or the article bottom is peeled off. Can be supplied toward the center of the width of the film storage area, even if the article is sticky like a bun or cake, or is soft and easily damaged on the surface. Can be supplied to the appropriate position in the film. Further, the belt conveyor is pivoted about the upstream side to displace the conveyance end in the left-right direction, so that the displacement in the left-right direction on the upstream side, which is the fulcrum side of the belt conveyor, is slight. For this reason, when an operator places an article on the upstream side of the belt conveyor, the article can be smoothly placed at an appropriate position where the article can be conveyed toward the center of the width of the film accommodation area.
According to the invention of claim 2, since the belt conveyor is rotated by the width unit of the conveyance end corresponding to the width of each partition area, the article is supplied toward the center of the width of the film storage area. The arithmetic processing is simplified, and the control load can be reduced.
According to the invention of claim 3, since the belt conveyor can be smoothly rotated by the motor, it is possible to reduce the inertial force that may cause the article to be displaced on the belt conveyor when the belt conveyor is rotated. it can.
According to the invention according to claim 4, among the articles placed on the belt conveyor, an article that may not be fed to the center of the width of the film accommodating area even if the belt conveyor is rotated, Since the conveyor can be stopped to correct or remove the position, even if the article is easily damaged or deformed, the article can be prevented from being damaged or deformed.
According to the invention according to claim 5, the article interval can be widened when the article is transferred from the first belt conveyor to the second belt conveyor even when the article is placed on the first belt conveyor with a gap therebetween. In addition, since the article of the second belt conveyor can be fed into the film at the same speed as the film conveyance speed, it is possible to prevent the bottom of the article from being damaged due to the speed difference between the article and the film, and to the film. Thus, it is possible to stably supply individual articles while maintaining the article interval. Therefore, continuous packaging becomes possible.
According to the sixth aspect of the invention, the conveyance operation of the film is driven and controlled so as to align the detected article with the film by the third sensor, so that the article feeding interval with respect to the film is always constant. It can be sent to the proper position.
According to the seventh aspect of the invention, the third sensor for driving and controlling the film transport operation is also used as a sensor for obtaining the timing for detecting the placement position of the article by the first sensor. The number of sensors can be reduced.
According to the invention according to claim 8, since the article conveyed by the crossing conveyor can be fed into the film at the same speed as the film conveying speed, the bottom surface of the article is damaged due to the speed difference between the article and the film. And can stably supply individual articles to the film.

It is a schematic front view which shows the article supply apparatus which concerns on an Example. It is a schematic plan view which shows the article supply apparatus which concerns on an Example. It is a principal part vertical side view of the goods supply apparatus which concerns on an Example. It is a main control block diagram of the goods supply apparatus which concerns on an Example. It is explanatory drawing which shows the relationship between the articles | goods detected by the 1st sensor which concerns on an Example, and a belt conveyor, Comprising: The center position of articles | goods shows the state which corresponds to a conveyance center line. It is explanatory drawing which shows the relationship between the articles | goods detected by the 1st sensor which concerns on an Example, and a belt conveyor, Comprising: The center position of articles | goods shows the state which has shifted | deviated from the conveyance center line.

  Next, a preferred embodiment of the article supply apparatus in the horizontal bag making and filling machine according to the present invention will be described below with reference to the accompanying drawings.

  1 and 2 show a schematic configuration of an article supply apparatus in a horizontal bag making and filling machine (hereinafter referred to as a packaging machine) according to an embodiment, and the article supply apparatus requires tight packaging. A supply conveyor 11 is provided for carrying and transporting articles 10 that are sticky or soft and easily damaged on the surface, such as raw confectionery such as buns. The supply conveyor 11 includes a belt conveyor 12 in which an endless belt is wound around a plurality of rollers disposed in the machine frame 26, a drive mechanism that travels on the belt conveyor 12, and the like. A transition conveyor 14 is connected in series on the downstream side of the belt conveyor 12. Then, the article 10 is pulled out from the film supply source 53 through the transfer conveyor 14 by the film conveying means including the feeding means 54 and the film feeding roller 50 driven by the film feeding motor 48, and is formed into a cylindrical shape by the bag making means 16. In the film (cylindrical film) F formed into a film, it is supplied at predetermined intervals. In the packaging machine, both ends in the longitudinal direction of the film F supplied from above to the bag making means 16 are polymerized below the bag making means 16 and vertically sealed by a vertical sealing means (not shown). At the same time, the cylindrical film F is subjected to horizontal sealing / cutting by a horizontal sealing means (not shown) at the front and rear positions of the article 10 between which the pillow package product is obtained.

  The belt conveyor 12 is connected in series with a second belt conveyor 24 that circulates an endless belt by a second drive motor 22 on the downstream side of the first belt conveyor 20 that circulates an endless belt by a first drive motor 18. Configured. The conveying speed of the second belt conveyor 24 is set to be higher than the conveying speed of the first belt conveyor 20 and the same as the conveying speed of the tubular film F formed by the bag making means 16, and the first belt conveyor The articles 10 fed from 20 to the second belt conveyor 24 are configured to be conveyed downstream with their front-rear intervals separated from each other. The conveyance speed of the second belt conveyor 24 and the conveyance speed of the tubular film F are not limited to the same speed, but may be substantially the same speed that does not cause damage to the bottom surface of the article when the article 10 is delivered. Good.

  A moving frame 28 in which the belt conveyor 12 is arranged is supported on a machine frame 26 of the article supply apparatus via a vertical rotation shaft 30 provided on the upstream side of the belt conveyor 12 so as to be horizontally rotatable. As shown in FIG. 3, a pair of rollers 34 and 34 sandwiching a support plate 32 horizontally disposed on the machine frame 26 are provided on the moving frame 28 near the lower end of the conveyance end, which is the downstream end of the belt conveyor 12. Two sets are arranged apart from each other in the left-right direction. For this reason, the conveyance terminal of the belt conveyor 12 is supported so as to be movable in the left-right direction along the support plate 32. The moving frame 28 is provided with the first and second drive motors 18 and 22, and both the motors 18 and 22 are configured to rotate horizontally integrally with the moving frame 28. In addition, an operator with respect to the article supply device may be placed on the endless belt of the first belt conveyor 20 at the work station S set on the upstream side of the belt conveyor 12 and close to the support position on the rotary shaft 30. The article 10 is placed.

  As shown in FIG. 1, an adjustment motor (motor) 36 such as a servo motor is disposed in the machine frame 26 in the vicinity of the support plate 32, and an adjustment mechanism 38 operated by the adjustment motor 36 is a moving frame. 28. That is, by operating the adjusting mechanism 38 with the adjusting motor 36, the belt conveyor 12 disposed on the moving frame 28 with respect to the machine frame 26 is rotated so that the conveyance end is displaced in the left-right direction with the rotation shaft 30 as a fulcrum. Moved. An encoder 40 is attached to the adjustment motor 36, and is set so as to detect the rotation angle with respect to the reference position of the belt conveyor 12. In the embodiment, the cylindrical film F formed by the bag making means 16 on the extension of the center line (hereinafter referred to as the transport center line) L1 in the transport direction in the belt conveyor 12 intersecting the center line of the rotating shaft 30. The position where the center line L2 in the film transport direction (hereinafter referred to as the film transport center line) L2 in the bag making means 16 corresponding to the center of the width of the storage area overlaps and is aligned in a row is the reference position of the belt conveyor 12 (FIG. 5). reference). As the adjusting mechanism 38, a cam mechanism comprising a follower that is eccentrically rotated by the adjusting motor 36 and a long hole that is formed on an adjusting plate disposed in the moving frame 28 and faces the follower. In the embodiment, the adjustment motor 36 and the adjustment mechanism 38 constitute a drive mechanism.

  As shown in FIG. 2, the moving frame 28 is provided with a first sensor 42 on the side of the belt conveyor 12 for detecting a horizontal placement position that intersects the conveying direction of the article 10 with respect to the belt conveyor 12. Is done. The first sensor 42 employs a displacement sensor that irradiates the article 10 with laser light and can measure the distance to the article 10 based on the received light level of the reflected light. Further, on the moving frame 28, it was placed on the outside of the right and left outer sides from the permissible lines L 3 and L 3 set on both sides in the left and right direction across the conveyance center line L 1 of the belt conveyor 12 during the conveyance in the first belt conveyor 20. Two second sensors 44 that detect the article 10 are disposed apart from each other in the left-right direction across the conveyance center line L1. Incidentally, the allowable line L3 may be unable to be fed into the center of the width of the storage area of the tubular film F even if the belt conveyor 12 is rotated among the articles 10 placed on the belt conveyor 12. Only the position shifted from the transport center line L1 is set. Further, a third sensor 46 for detecting the article 10 conveyed by the belt conveyor 12 is disposed in the machine frame 26 downstream of the detection position of the first sensor 42.

  The transfer conveyor 14 is connected to the downstream side of the second belt conveyor 24, and is formed between the film folding guide portion formed on the bottom of the bag making means 16 and the belt conveyor 12, as shown in FIG. It is arranged corresponding to the empty space (lower space) to be driven, and is driven by obtaining drive via a belt from a film feed motor 48 that drives the feeding means 54. The transfer conveyor 14 is driven to synchronize with the feeding means 54 (film conveying means) and is set to convey the article 10 at the same speed as the film conveying speed conveyed by the feeding means 54. When there is a difference between the timing when the article 10 detected by the third sensor 46 is fed into the tubular film F and the specified timing, the feeding means 54 accelerates the film conveyance speed according to the difference. Alternatively, the speed is changed so as to decelerate, and various other operation mechanisms in the packaging machine such as the crossing conveyor 14 and the lateral sealing means are driven and controlled to synchronize with the change in the film conveying speed. The crossover conveyor 14, the feeding means 54, and the horizontal sealing means are synchronized on the basis of a clock pulse generated from a clock pulse generator provided in the control means 52.

  As shown in FIG. 4, the control means 52 includes motors 18, 22, 48 for driving the first belt conveyor 20, the second belt conveyor 24, and the transfer conveyor 14, an adjustment motor 36, a vertical sealing means, Each control motor of the horizontal sealing means is connected, and connected so that a detection signal related to the placement position of the article 10 detected by the first sensor 42 arranged corresponding to the belt conveyor 12 is inputted. At the same time, the detection signal of the article 10 detected by the second and third sensors 44 and 46 is connected. Based on the detection signal of the first sensor 42 and the detection signals of the second and third sensors 44 and 46, the motors 18, 22, and 48 of the first belt conveyor 20, the second belt conveyor 24, and the crossing conveyor 14, respectively. In addition, each of the adjusting motor 36 and each control motor of the lateral seal means is configured to be driven and controlled by the control means 52.

  In the control means 52, the placement area of the article 10 on the belt conveyor 12 detected by the first sensor 42 is a width unit smaller than the difference between the width of the accommodation area of the tubular film F and the width of the article 10. A plurality of sections are set, and the control means 52 specifies a section area where the article 10 detected by the first sensor 42 is located. And the belt conveyor in the width unit of the conveyance termination of the belt conveyor 12 corresponding to the width | variety of each division area so that the articles | goods 10 located in this specified division area may be sent to the width | variety center of the accommodation area | region of the cylindrical film F The control motor 52 is configured to drive and control the adjustment motor 36 so as to rotate the motor 12. Note that the conveyance end width unit corresponding to the width of the partition area is that the movement distance at the conveyance end is larger than the movement distance at the detection position of the first sensor 42 because the belt conveyor 12 rotates about the rotation shaft 30. Means longer.

  In the initial setting, as shown in FIG. 5 and FIG. 6, nine division areas divided by lines A to J are set in the placement area of the article 10 between the conveyance center line L1 and the first sensor 42. The center position C of the article 10 is placed on the conveyance center line L1, and the side end of the article 10 on the first sensor 42 side is the middle of the section area between the lines EF in the middle of the nine section areas. And the belt conveyor 12 is positioned at the reference position.

  At the work station S set on the upstream side of the first belt conveyor 20, the articles 10 placed by the operator on the transport center line L1 of the first belt conveyor 20 at intervals in a row are The two belt conveyors 24 and the first belt conveyor 20 are transported by the second belt conveyor 24 separated by a required interval due to the speed difference. For this reason, it is possible to prevent the articles 10 from being transferred to the transfer conveyor 14 while the interval between the front and rear articles 10 and 10 is clogged from the second belt conveyor 24, and individual articles without interrupting the packaging operation. 10 can be continuously packaged.

  Until the article 10 is delivered from the first belt conveyor 20 to the second belt conveyor 24, the article 10 deviates to the left and right outside from the permissible lines L3, L3 set on the left and right sides sandwiching the conveyance center line L1. Is detected by the second sensors 44, 44, the control means 52 controls the drive motors 18, 22 to stop the first belt conveyor 20 and the second belt conveyor 24. In this case, after the operator corrects the position of the article 10 to be detected, the operation switch is operated to restart the operation of the belt conveyor 12, so that the second belt conveyor 24 has a conveyance center line L1. Only the article 10 with a small amount of deviation is delivered.

  When the article 10 conveyed by the second belt conveyor 24 is detected by the third sensor 46, the placement position of the article 10 is detected by the first sensor 42. Based on the detection signal from the first sensor 42, the control means 52 calculates which partition region the side end of the article 10 is located in and determines that it is located in the partition region between the lines EF. In this case (the state of FIG. 5), the center position C of the article 10 is not shifted from the transport center line L1, and therefore the current position is maintained without rotating the belt conveyor 12. In this case, the article 10 delivered from the second belt conveyor 24 to the transfer conveyor 14 is fed toward the center of the width of the accommodation area of the tubular film F formed by the bag making means 16. Further, the transfer conveyor 14 is set at the same speed as the film conveying speed by the film conveying means comprising the film feeding roller 50 disposed downstream of the feeding means 54 or the bag making means 16, and further, these film conveying means. Therefore, the article 10 that has passed through the crossing conveyor 14 is satisfactorily fed into the center of the width of the storage area of the tubular film F. Furthermore, since the conveyance speed of the second belt conveyor 24 and the transfer conveyor 14 is set to the same speed as the film transfer speed, the transfer from the second belt conveyor 24 to the transfer conveyor 14 and from the transfer conveyor 14 to the tubular film F are performed. At the time of delivery, damage to the bottom surface of the article 10 due to the speed difference can be prevented, and the individual articles 10 can be stably supplied to the transfer conveyor 14 and the tubular film F.

  In addition, when there is a prescribed timing and a deviation with respect to the timing at which the article 10 detected by the third sensor 46 is fed to the cylindrical film F during the conveyance of the second belt conveyor 24, the difference is determined by the film conveying means. The article 10 can be fed into the cylindrical film F at regular intervals by shifting the film conveyance speed and aligning the detected article with the film. In addition, each operation mechanism of the packaging machine such as the transverse sealing means is driven and controlled in conjunction with the operation of the film conveying means, so that the articles 10 are not bitten between the articles 10 supplied into the tubular film F. A pillow package product in which the article 10 is accommodated in one bag is obtained by transverse sealing and cutting by a transverse sealing means in a direction crossing the film conveyance direction.

  Next, the case where the article 10 is displaced in the left-right direction with respect to the position fed from the belt conveyor 12 toward the center of the width of the accommodation area of the tubular film F will be described. When the control means 52 determines that the side edge of the article 10 is located in the partition region between the lines CD based on the detection signal from the first sensor 42 (state of FIG. 6), the article 10 Is shifted to the right side (side away from the first sensor 42) by two sections with respect to the transport center line L1, so that the control means 52 is a belt conveyor corresponding to the width of two sections. The adjustment motor 36 is driven and controlled so that the belt conveyor 12 is rotated to the left by an angle corresponding to the width of the conveying end 12. As a result, the conveyance end of the belt conveyor 12 is displaced to the left, and the article 10 conveyed by the belt conveyor 12 is moved over the film conveyor center line L2 so that the center position C of the article 10 moves on the film conveyance center line L2. 14 is sent to. The belt conveyor 12 is stopped and held at the rotated position. Further, in the control means 52, the current position (rotation angle) of the adjusted belt conveyor 12 is stored and updated by the pulse from the encoder 40.

  When the side end of the next article 10 is located, for example, in the partition region between the lines GH, the center position C of the article 10 is left by two sections with respect to the transport center line L1. It is misaligned. However, due to the rotation of the belt conveyor 12 with respect to the previous positional shift of the article 10, the current position (rotation angle) of the belt conveyor 12 is shifted to the left by two sections of the transport center line L1 with respect to the reference position. Therefore, the control means 52 determines the belt conveyor 12 at an angle corresponding to the width of the conveying end of the belt conveyor 12 corresponding to the width of four sections, based on the current position of the belt conveyor 12 and the detection result of the first sensor 42. The adjustment motor 36 is driven and controlled so as to rotate to the right. As a result, the conveyance end of the belt conveyor 12 is displaced to the right, and the article 10 conveyed by the belt conveyor 12 moves the cross conveyor 14 so that the center position C of the article 10 moves on the film conveyance center line L2. It is sent toward. In addition, although the conveyance direction of the articles | goods 10 in the belt conveyor 12 after rotation changes from the conveyance direction of the articles | goods 10 in the belt conveyor 12 before rotation to the left-right direction, the detection position in the 1st sensor 42 is the position of the belt conveyor 12. It is in the vicinity of the conveyance end, and the influence of changing the conveyance direction is negligible.

  That is, the belt is arranged such that the conveyance end is displaced left and right toward a position where the article 10 can be fed to the center of the width of the accommodation area of the film F according to the positional deviation of each article 10 conveyed by the belt conveyor 12. Since the conveyor 12 is rotated, the article 10 does not slide on the conveyor, and even if the article 10 is soft and sticky like a bun or cake, the surface is not damaged or deformed. It can supply toward the center of the width | variety of the storage area | region of the cylindrical film F. FIG. Further, the displacement in the left-right direction on the upstream side which is the rotation fulcrum side of the belt conveyor 12 is slight, and when the operator places the article 10 on the belt conveyor 12 at the work station S, the conveyance center The article 10 may be placed so as to align with the line L1. That is, it is not necessary for the operator to change the placement position of the article 10 each time the belt conveyor 12 is rotated, and it is possible to cope with a high speed without reducing workability. Further, since the belt conveyor 12 is rotated in units of the width of the conveyance end corresponding to the preset width of the partition area, the article 10 is supplied toward the center of the width of the storage area of the tubular film F. The arithmetic processing in the control means 52 can be simplified and the control load can be reduced. In addition, since the width of each partition area is set to be smaller than the difference between the width of the storage area of the tubular film F and the width of the article 10, the belt is in the width unit of the conveyance end corresponding to the width of the partition area. Even if the conveyor 12 is rotated, the article 10 whose feeding position has been adjusted does not come into contact with the film rising on the side of the tubular film F.

  Here, when the second sensor 44 detects the article 10 placed outside the left and right outer sides from the allowable lines L3 and L3 set on both sides in the left and right direction across the conveyance center line L1 of the belt conveyor 12, Since the position of the article 10 can be corrected or removed by stopping the belt conveyor 12, even if the article 10 is easily damaged or deformed, the article 10 can be prevented from being damaged or deformed. . Further, since the adjustment motor 36 is used as a drive source of the drive mechanism for rotating the belt conveyor 12, the belt conveyor 12 can be smoothly rotated, and the article 10 is transferred to the belt conveyor 12 when the belt conveyor 12 is rotated. It is possible to reduce the inertial force that can be a factor such as positional displacement. Further, since the third sensor 46 for driving and controlling the film conveying means is also used as a sensor for obtaining the timing for detecting the placement position of the article 10 by the first sensor 42, the number of sensors is reduced. Thus, the manufacturing cost can be kept low.

(Example of change)
The present invention is not limited to the configuration of the embodiment, and can be modified as follows.
(1) In the embodiment, the case of the normal pillow type packaging machine in which the vertical seal is applied below the conveyance surface has been described. However, the back seal type pillow packaging machine or the three-side seal that performs the vertical seal above the conveyance surface. The present invention can also be applied to a packaging machine such as a type and a four-side seal type. In these packaging machines, the article 10 can be directly transferred from the belt conveyor 12 to the tubular film F, so that the transfer conveyor can be omitted.
(2) In the embodiment, the first sensor 42 is disposed on the moving frame 28, but the first sensor 42 may be disposed on the machine frame 26. In this case, the separation distance between the article 10 and the first sensor 42 located at a reference position (position on the extension line of the film conveyance center line L2) that can be supplied toward the center of the width of the storage area of the tubular film F. Is set in advance as a reference distance, and the rotation direction and the rotation amount of the belt conveyor 12 may be calculated from the difference between the reference distance and the measurement distance to the article 10 detected by the first sensor 42.
(3) In the embodiment, the displacement sensor is used as the first sensor 42. However, data obtained by analyzing an image of the article 10 and the belt conveyor 12 taken from above by using an imaging unit such as a camera is used. Based on this, a configuration is adopted in which the rotation angle of the belt conveyor 12 is adjusted so that each article 10 is supplied to the film conveyance center line L2 (the center of the width of the storage area of the tubular film F) in the bag making means 16. obtain. The image pickup means may be installed in either the machine frame 26 or the moving frame 28. Similarly to the embodiment, the image pickup means is transferred from the belt conveyor 12 to the transfer conveyor 14 based on the data obtained by the image pickup means. It is possible to generate a timing signal that synchronizes the operations of the transfer conveyor 14, the film transport unit, and the horizontal sealing unit with the timing of delivering the article 10 toward the target.
(4) In the embodiment, the current position of the belt conveyor 12 is detected by a pulse from the encoder 40, but a contact type or non-contact type switch capable of detecting the rotation of the belt conveyor 12 at every predetermined angle is provided. A plurality of them may be arranged, and the rotation angle of the belt conveyor 12 may be driven and controlled by the ON / OFF pattern of each switch.
(5) Since the detection signal by the third sensor 46 in the embodiment is used as a timing signal for synchronization with the film conveying means and the lateral sealing means, the position at which the article 10 is detected by the third sensor 46 is Based on the detection of the article by the third sensor 46, a control motor such as the film feeding motor 48 of the film conveying means is accelerated so that a time can be obtained in which the film conveying speed is substantially equal to the speed at which the article 10 is fed into the bag making means 16. Furthermore, it is desirable to set the required length upstream from the end of conveyance of the belt conveyor 12.
(6) In the embodiment, the adjustment motor 36 is described as the drive means of the drive mechanism that rotates the belt conveyor 12. However, a linear actuator such as a hydraulic cylinder or other drive means can be used.
(7) In the embodiment, the cam mechanism is used as the adjustment mechanism 38 of the drive mechanism that rotates the belt conveyor 12, but various other mechanisms such as a link mechanism and a ball screw mechanism may be employed.
(8) In the embodiment, it has been described that the transport speed of the second belt conveyor 24 and the transport speed of the film are the same speed. However, the same speed is not limited to the completely same speed but includes substantially the same speed. It is.

DESCRIPTION OF SYMBOLS 10 Article, 12 Belt conveyor, 14 Transition conveyor, 16 Bag making means 20 1st belt conveyor, 24 2nd belt conveyor 36 Adjustment motor (motor, drive mechanism), 38 Adjustment mechanism (drive mechanism), 42 1st sensor 44 1st 2 sensors, 46 3rd sensor, F cylindrical film (film), L3 tolerance line

Claims (8)

An article supply apparatus in a horizontal bag making and filling machine for supplying an article (10) into a film (F) formed by a bag making means (16),
Articles (10) are placed and conveyed at predetermined intervals toward the bag making means (16), and rotated by a drive mechanism (36, 38) so that the conveyance end is displaced in the left-right direction with the upstream side as a fulcrum. Belt conveyor (12)
A first sensor (42) for detecting a horizontal placement position of the article (10) conveyed by the belt conveyor (12),
Based on the placement position of the article (10) when detected by the first sensor (42), the article (10) is directed to a position where it can be fed into the center of the width of the accommodation area of the film (F). Article supply in a horizontal bag making and filling machine characterized in that the drive mechanism (36, 38) is driven and controlled to rotate the belt conveyor (12) so as to displace the conveyance end in the left-right direction. apparatus.   The placement position of the article (10) when detected by the first sensor (42) is a horizontal unit smaller than the difference between the width of the storage area of the film (F) and the width of the article (10). The drive mechanism (36, 38) is specified so as to rotate the belt conveyor (12) by the width unit of the conveyance end corresponding to the width of each partition area. The article supply apparatus in the horizontal bag making and filling machine according to claim 1, wherein the apparatus is driven and controlled.   3. The article supply in the horizontal bag making and filling machine according to claim 1, wherein the drive mechanism (36, 38) includes a motor (36), and the belt conveyor (12) is rotated by the motor (36). apparatus.   A second part for detecting an article (10) placed on the upstream side of the detection position by the first sensor (42) and deviating from the left and right outside of the permissible line (L3) on both sides of the belt conveyor (12). The horizontal bag making and filling machine according to any one of claims 1 to 3, further comprising a sensor (44) configured to stop the belt conveyor (12) on the basis of article detection by the second sensor (44). Article supply device.   The belt conveyor (12) includes a first belt conveyor (20) and a second belt conveyor (24) connected to the downstream side of the first belt conveyor (20). ) Is set at a speed higher than that of the first belt conveyor (20) and the same speed as that of the film (F) formed by the bag making means (21). The article supply apparatus in the horizontal bag making and filling machine according to any one of the above.   A third sensor (46) for detecting the article (10) conveyed by the belt conveyor (12) is provided, and the film (F) is positioned so that the detected article and the film (F) are aligned by the third sensor (46). The article supply apparatus for a horizontal bag making and filling machine according to any one of claims 1 to 5, wherein the conveying operation of F) is driven and controlled.   The horizontal bag making and filling machine according to claim 6, wherein the first sensor (42) detects a placement position of the article (10) at a timing when the article (10) is detected by the third sensor (46). Article supply apparatus.   Both ends in the longitudinal direction of the film supplied from above to the bag making means (16) are configured to be polymerized below the bag making means (16), and are formed below the bag making means (16). A transfer conveyor (14) for supplying the articles (10) transferred from the belt conveyor (12) into the film (F) is disposed in the empty space, and the transfer conveyor (14) has a transfer speed of the product. The speed of the film (F) formed by the bag means (16) is set to the same speed as that of the film (F) and travels in conjunction with the film (F) transport operation. The article supply apparatus in the horizontal bag making and filling machine described above.

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