JP2011162308A - Supply origin detecting device of supply conveyor in horizontal bag making filling machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a supply origin detecting device of a horizontal bag making filling machine, without causing erroneous detection, even if a change is caused in a carrying speed of a supply conveyor processed at high speed. <P>SOLUTION: This supply origin detecting device includes a chain 15 traveling on a guide part 13 of a guide rail 11 arranged along a carrying line, and a push-sending member 18 arranged at a predetermined interval in the chain 15, and supports and carries an article on a bed 12 between the push-sending member 18 and itself. The guide rail 11 is provided with a support part 14 for supporting the lower side of the guide part 13 and abutting on the lower side of the push-sending member 18. The guide part 13 is formed with a horizontal hole 24 penetrated through the side crossing with the carrying line, outside a travel area of the chain 15 and in an area for passing the push-sending member 18. An optical detecting means (a reflection type sensor 26 and a reflecting plate 27) for passing the light through the horizontal hole 24, is arranged on the side dislocated from a position of a clearance 12a opened in the bed 12 under the bed 12, to detect the push-sending member 18. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a supply origin detection device for determining a supply origin of a supply conveyor in a horizontal bag making and filling machine that conveys an article by a conveyance member disposed on an endless cord such as a chain or a belt.

  Supply conveyors that transport articles with transport members arranged on endless cords such as chains and belts are used for film packaging of articles, such as horizontal bag making and filling machines, waist-wrapping machines, and push-up type stretch packaging machines. It is arranged on the supply side of the packaging machine as a part of the packaging machine or separately from the packaging machine, or on the supply side of the measuring instrument. These devices detect the feeding conveyor's conveying member, etc. with the origin sensor and determine the feeding origin, so that the conveying conveyor's conveying member conveys the article and the post-processing of the film transfer means, sealing means, etc. The drive is controlled so that the drive timing with the means is synchronized. For example, as in Patent Document 1, it is known that an origin sensor is provided so as to detect a conveying member in a return path (return side) of an endless cord body after the article has been conveyed and laid down.

JP 2008-68992 A

  The stretch wrapping machine or the like in Patent Document 1 has a processing capacity of several tens of packets per minute, but the horizontal bag making and filling machine has a processing capacity of several hundreds per minute and is processed at high speed. Further, the horizontal bag making and filling machine is configured in such a manner that a chain is wound around a drive sprocket on the downstream side and a driven sprocket on the upstream side of the supply conveyor, and the chain is slackened downward. For this reason, in the supply conveyor of the horizontal bag making and filling machine, the return path of the endless cord is caused by the change in the centrifugal force acting on the endless cord along with the change in the transport speed of the supply conveyor, etc. The state of the body slack angle, movement path, etc. changes. Therefore, based on the output of the origin sensor arranged on the return path (return side) of the endless cable body, for example, while operating the supply conveyor at a low speed during the preparatory operation before the start of normal operation, A shift occurs in the supply origin position when the origin sensor detects after the normal operation that is processed at a high speed from the preparatory operation, and a shift occurs in the supply timing of the article and the processing timing of the processing means in the subsequent process. Therefore, there is a possibility that the detection reliability of the supply origin is lowered.

  It is an object of the present invention to provide a supply origin detection device for a horizontal bag making and filling machine that is not erroneously detected even if a change occurs in the conveyance speed of a supply conveyor that is processed at high speed.

  In the supply conveyor of the horizontal bag making and filling machine according to the first aspect of the present invention, the endless cord 15 traveling on the guide portion 13 of the guide rail 11 disposed along the transport line, and the endless cord 15 A conveying member 18 is provided at predetermined intervals, and the article 7 is supported and conveyed between the conveying members 18. The guide rail 11 is provided with a support portion 14 for supporting and guiding the lower side of the guide portion 13 and supporting the lower side of the transport member 18. The guide portion 13 is formed with a lateral hole 24 penetrating to the side intersecting the transport line outside the travel region of the endless cord 15 and in the region through which the transport member 18 passes. Optical detection means 26 and 27 that allow light to pass through the lateral hole 24 are disposed below the bed 12 that is laterally removed from the extension passage 12a of the conveying member 18, and the optical detection means 26 and 27 27 detects the conveying member 18.

  In the invention of claim 2 premised on the invention of claim 1, a foreign matter for preventing erroneous detection of the passage of light due to debris or the like of an article dropped from the extending passage 12a toward the periphery of the lateral hole 24 Excluding means 25 is provided.

In the invention of claim 3 premised on the invention of claim 2, the foreign matter removing means is a vertical hole 25 or a notch passing through the support portion in the vertical direction.
In the invention of claim 4 based on any one of claims 1 to 3, the lateral hole 24 is formed in the vicinity of the conveyance start end side of the guide rail 11.

  The invention according to claim 5, which presupposes any one of the inventions according to claims 1 to 4, wherein the optical detection means includes a reflecting plate 27 disposed on one of both sides sandwiching the guide portion 13, and the like. A reflective sensor disposed on the side.

  According to the first aspect of the present invention, in the forward path (carrier side) that travels on the guide rail while the conveying member is supported and guided by the support portion of the guide rail together with the endless cord traveling on the guide portion of the guide rail, the guide portion Since the optical detection means detects only the conveying member by allowing light to pass through the horizontal hole formed in the centrifugal hole, the centrifugal force changes when the conveying speed of the supply conveyor to be processed at high speed changes from high speed to low speed, for example. Even so, since the state of the slack angle of the endless cord and the movement path do not change, the detection reliability of the supply origin is not impaired even in high-speed processing. Further, since the optical detection means is disposed below the bed that is laterally removed from the extension passage of the conveying member, the waste of the article that naturally falls from the extension passage between the beds is detected by the optical detection means. Therefore, even in high-speed processing, the detection reliability of the supply origin is not impaired.

  In the invention of claim 2, since the foreign matter removing means can prevent the debris of the articles that naturally fall from the extending passage between the beds from collecting around the lateral hole of the guide rail and causing the detection failure, the optical type The light by the detection means does not reliably pass through the lateral hole and impair the detection reliability of the supply origin.

  According to a third aspect of the present invention, the foreign matter removing means is made to correspond to the lateral hole of the guide rail, and a simple structure in which a vertical hole penetrating in the vertical direction or a notch is provided in the support portion of the guide rail is provided. It is possible to prevent the occurrence of a detection failure due to accumulation of debris or the like of an article that naturally falls from the extension passage of the guide rail and accumulates around the lateral hole of the guide rail.

  In the invention of claim 4, by forming the lateral hole in the vicinity of the unloading start end side of the guide rail, for example, when the operator manually supplies the article to the bed, the lateral hole corresponds to a position outside the supply region. Since the hole is formed, the debris and the like of the articles that have dropped naturally during the supply of the articles do not accumulate near the conveyance start end side of the guide rail. Accordingly, the supply origin detection reliability is not impaired.

  In the invention of claim 5, since the optical detection means includes a reflection plate disposed on one of both sides sandwiching the guide portion and a reflection type sensor disposed on the other side, the reflection plate is provided on the reflection plate side. Since no wiring such as a power source is required, wiring can be simplified. For example, even if the place where the optical detection means is disposed is a movable member such as an openable / closable cover, disconnection or the like can be avoided because the reflecting plate has no wiring.

(A) is a schematic view of a horizontal bag making and filling machine, (b) is a partial schematic view showing a conveying start end side of the article supply conveyor, and (c) is a portion of a guide rail in the article supply conveyor. It is a top view, (d) is the fragmentary perspective view of this guide rail. (A) is a partial schematic drawing which shows the guide rail of this article supply conveyor, a conveyance member, etc., (b) is a fragmentary sectional view in the AA location of (a). (A) is a partial approximate body figure which shows the state which a pushing member closes the horizontal hole of the guide rail of this goods supply conveyor, (b) is a fragmentary sectional view in the BB location of (a).

  The horizontal bag making and filling machine shown in FIG. 1 (a) forms a belt-like film 2 drawn from a raw fabric roll 1 into a cylindrical shape by a bag making means 3, and conveys the center of a conveyance path 10 of an article supply conveyor 6. The cylindrical film 4 is sealed and cut while the article 7 sent along the line is placed in the cylindrical film 4 to obtain a pillow packaged product.

  As shown in FIGS. 2B and 3B, the article supply conveyor 6 includes a frame 28. On the upper surface of the frame body 28, a pair of beds 12 and a pair of article guides 9 are disposed on both the left and right sides (sides) that intersect the conveyance line. A conveyance path 10 is formed between the pair of article guides 9 along the conveyance line. Between the pair of beds 12, 12, a gap 12 a penetrating in the vertical direction is extended along the transport line as an extension passage of a later-described pushing member 18 extending upward from the bed. Below the pair of beds 12, 12, a guide rail 11 disposed along a conveyance line is supported by a frame body 28 (not shown).

  As shown in FIG. 1B, the conveyance start end 11a of the guide rail 11 is connected to a lever 22 that can swing in the vertical direction, and the inclination of the lever 22 and the height position of the guide rail 11 are adjusted. The height position of the guide rail 11 with respect to the conveyance path 10 can be adjusted. Further, by inclining the lever 22, a later-described pushing member 18 lying on the forward path side (carrier side) of the supply conveyor 6 reaches the conveyance start end 11a of the guide rail 11 disposed on the forward path side. Smooth transition to the standing state is possible.

  As shown in FIGS. 2 and 3, the guide rail 11 supports the lower end of the guide portion 13 and the guide portion 13 extending along the transport line below the gap 12 a and from the lower end of the guide portion 13. It has a support portion 14 that protrudes from the left and right sides and is wider than the guide portion 13. An endless chain 15 (endless cord) in which roller links 16 and pin links 17 are alternately connected is placed on the upper end of the guide portion 13 so as to be able to travel along the transport line. Specifically, a pin plate 17 b is connected to the roller plate 16 b by a pin 17 a inserted into the roller 16 a, the roller 16 a is placed on the upper end of the guide portion 13, and the roller plate 16 b is connected to the guide portion 13. The pair of side walls 13a in the vicinity of the upper end is placed so as to be sandwiched therebetween, and the chain 15 is disposed so as to be able to travel on the guide portion 13.

  As shown in FIG. 3B, the pushing member 18 (conveying member) disposed on the chain 15 at predetermined intervals is an upper plate constructed between the left and right leg portions 19a and the front end portions of both leg portions 19a. A moving part 19 having a part 19b and an article conveying part 20 projecting upward from the upper plate part 19b are provided, and both leg parts 19a are rotatably supported with respect to the pin 17a. A weight 21 is attached to one leg 19a behind the pin 17a. The both leg portions 19a of the moving portion 19 sandwich the pin plate 17b and the roller plate 16b from both the left and right sides, and the lower side of both leg portions 19a is in contact with the support portion 14. The article conveyance unit 20 extends upward from a gap (extension passage) 12 a between the beds 12 and is exposed between the article guides 9 in the conveyance path 10. When the chain 15 travels on the upper side of the guide unit 13, the article transport unit 20 moves on the transport path 10 along the transport line along the clearance 12 a. Therefore, the article 7 placed between the pushing members 18 protruding upward from the gap 12a in the conveying path 10 is pushed (supported) by the pushing member 18 and conveyed on the conveying path 10 from the upstream side to the downstream side. Can do.

  The through-hole 23 is formed by integrally forming a lateral hole 24 penetrating the guide portion 13 laterally intersecting the conveyance line and a vertical hole 25 (foreign matter removing means) penetrating the support portion 14 in the vertical direction. . The lateral hole 24 is a through hole that is opened at a height position that is below the traveling region of the chain 15 that travels on the guide portion 13. The vertical hole 25 is a through-hole opened in the lower periphery of the horizontal hole 24 in the support portion 14 corresponding to a dropping region such as a residue of articles falling from the gap 12a opened between the pair of beds 12. The debris of the article dropped from the gap 12a around the horizontal hole 24 can be dropped from the vertical hole 25 and removed.

  As shown in FIG. 2B, the optical detection means that allows light to pass through the lateral hole 24 includes a reflective sensor 26 having a light projecting portion and a light receiving portion, and a reflective plate 27, and includes a reflective sensor. 26 and the reflection plate 27 are disposed below the bed 12 so as to face opposite side frames 28 that are out of the position of the gap 12a with the guide portion 13 interposed therebetween. As shown in FIG. 2A, in a state where the moving portion 19 of the pushing member 18 does not pass through the left and right sides of the horizontal hole 24, the light from the reflective sensor 26 passes through the horizontal hole 24 and passes through the reflecting plate. 27 is reflected. As shown in FIGS. 3A and 3B, in a state where the moving portion 19 of the pushing member 18 passes through both the left and right sides of the horizontal hole 24, the light passing through the horizontal hole 24 is blocked by both leg portions 19a. The supply origin can be detected by control means (not shown) based on the signal from the reflective sensor 26.

This embodiment has the following effects.
(1) Guiding on the forward path (carrier side) traveling on the guide rail 11 while the pushing member 18 is supported and guided by the support portion 14 of the guide rail 11 together with the chain 15 traveling on the guide portion 13 of the guide rail 11 Since the optical detection means (reflection type sensor 26 and reflection plate 27) passes light through the horizontal hole 24 formed in the section 13 and detects only the pushing member 18, the article supply conveyor 6 to be processed at high speed is used. For example, when the conveyance speed is changed from high speed to low speed, the state of the slack angle of the chain 15 and the movement path does not change even if the centrifugal force or the like is changed. There is nothing.

  (2) Since the optical detection means is disposed below the bed 12 and laterally away from the gap 12a (extended passage of the conveying member) opened in the bed 12, the optical detection means is naturally provided from the gap 12a of the bed 12. Since it is possible to avoid the debris and the like of the dropped article 7 from adhering to the optical detection means, the detection reliability of the supply origin is not impaired even in high-speed processing.

  (3) Since the foreign matter removing means can prevent the detection defect from occurring due to the debris of the article 7 that naturally falls on the guide rail 11 from the gap 12a of the bed 12 around the lateral hole 24, the optical detecting means Thus, the light reliably passes through the lateral hole 24 and does not impair the detection reliability of the supply origin. In addition, since the foreign matter removing means is configured by the vertical hole 25 penetrating the support portion 14 of the guide rail 11 in the vertical direction so as to correspond to the horizontal hole 24 of the guide rail 11, for example, the residue of the article is removed by air. The configuration is simpler than the configuration of the device or the like.

  (4) By forming the horizontal hole 24 in the vicinity of the conveyance start end side of the guide rail 11, the horizontal hole 24 corresponds to the position outside the supply area when the operator manually supplies the article 7 to the bed 12. Since the hole 24 is formed, the debris and the like of the articles that have dropped naturally during the supply of the articles do not accumulate in the vicinity of the conveyance start end 11a side of the guide rail 11. Accordingly, the supply origin detection reliability is not impaired.

  (5) The bed 12 includes a reflection plate 27 disposed on one side of the guide unit 13 with the optical detection means, and a reflective sensor 26 having a light projecting unit and a light receiving unit disposed on the other side. Since it is provided at a lower position, no wiring such as a power source is required on the reflecting plate 27 side, so that the wiring can be simplified. For example, even if the place where the optical detection means is disposed is a movable member such as an openable / closable cover, the reflecting plate 27 has no wiring, so that disconnection or the like can be avoided.

  (6) Since the leg 19a of the pushing member 18 blocks the lateral hole 24 of the guide rail 11 and blocks the passage of light from the reflective sensor 26, the feeding origin can be detected. Compared with the prior art that detects the supply origin by detecting the position of the feed member 18, the position of the feeding member 18 is changed along with the change of the size of the article 7, or even after the entire chain 15 is removed. The supply origin can be easily determined based on the detection of the movement of the leg 19a closing the horizontal hole 24.

For example, the following embodiment may be configured as follows.
In place of the reflective sensor, a light source may be detected by passing light through the horizontal hole 24 using a transmissive photoelectric sensor.

  In the present embodiment, the feeding member 18 that pushes and conveys the article 7 placed on the bed that cannot travel is adopted as the carrying member, but the carrying member that runs while placing or supporting the article is adopted. May be.

  ・ As a foreign matter exclusion means for reliably passing the light of the optical detection means through the horizontal hole 24, instead of the vertical hole 25, a notch is provided, or air is constantly or intermittently blown around the horizontal hole 24 to vibrate. For example, the waste of the article may not be accumulated around the lateral hole 24.

  ・ As an endless cord, a belt may be used instead of a chain.

  6 ... Supply conveyor, 7 ... Article, 10 ... Conveying path, 11 ... Guide rail, 12 ... Bed, 12a ... Gap (extension passage), 13 ... Guide part, 14 ... Support part, 15 ... Chain (endless cord) , 18 ... pushing member (conveying member), 19 ... moving part, 20 ... article conveying part, 24 ... horizontal hole, 25 ... vertical hole (foreign matter removing means), 26 ... sensor (optical detection means), 27 ... reflecting plate (Optical detection means).

Claims (5)

An endless cord traveling on a guide portion of a guide rail disposed along a transport line, and a transport member disposed at predetermined intervals on the endless cord, and supporting an article between the transport members Supply conveyor in a horizontal bag making and filling machine,
The guide rail is provided with a support portion for supporting and guiding the lower side of the guide portion and supporting the lower side of the conveying member,
The guide part is formed with a lateral hole penetrating to the side intersecting the conveyance line outside the traveling region of the endless cord and in the region through which the conveyance member passes.
An optical detection means for allowing light to pass through the lateral hole is disposed below the bed that is laterally removed from the extending passage of the conveying member, and the conveying member is detected by the optical detecting means. A supply origin detection device for a supply conveyor in a horizontal bag making and filling machine. The horizontal bag making and filling according to claim 1, further comprising a foreign matter removing means for preventing erroneous detection of light passing or not due to debris or the like of an article dropped from the extending passage toward the periphery of the horizontal hole. Supply origin detection device of the supply conveyor in the machine. 3. The supply origin detecting device for a supply conveyor in a horizontal bag making and filling machine according to claim 2, wherein the foreign matter removing means is a vertical hole or a cutout portion penetrating the support portion in the vertical direction. The supply origin detection device for a supply conveyor in a horizontal bag making and filling machine according to any one of claims 1 to 3, wherein the horizontal hole is formed in the vicinity of a conveyance start end side of the guide rail. . The optical detection means includes a reflecting plate disposed on one of both sides of the guide portion and a reflective sensor disposed on the other side. A supply origin detection device for a supply conveyor in the horizontal bag making and filling machine according to claim 1.

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