JP4650031B2 - Banding device - Google Patents

Description

  The present invention relates to a so-called “banding” banding device that winds a product with a band sheet.

In general, products with trays with lids, such as lunch boxes, wrap a belt sheet around the products (tray with lids), and weld the overlapping portions of the belt sheets to fix the lids of products (tray with lids). In other words, so-called “banding” is performed.
Banding with this band sheet is to supply the band sheet along the inner side of the annular guide, make a loop with the band sheet, fix the tip of the band sheet to the product placed in the guide, The opposite side is pulled back, the initial loop is narrowed down to a loop along the outer periphery of the product, and the portion that overlaps with the tip of the belt sheet is bonded and cut to hang the belt sheet on the product (see, for example, Patent Document 1).

  Then, the belt sheet is fed out by a predetermined amount by driving a pair of upper and lower feed rollers to form a loop, and the belt sheet forming the loop is fed to the product placed in the loop. The roller was driven back by a predetermined amount, and the loop was squeezed to complete the packaging.

  However, depending on the product to be banded or the tray with a lid (container), the band sheet can be easily deformed when the loop is pulled back and the loop is squeezed. There is a problem that it is easy to come off, and it is necessary to adjust the retraction amount or the squeezing force each time.

  In addition, the pair of upper and lower feed rollers for feeding or pulling out the belt sheet includes pressure when the belt sheet is fed out (pressure for attaching the belt sheet with the upper and lower feed rollers) and when the belt sheet is pulled back to reduce the loop diameter. For example, when packaging a soft tray, set the pressure so that the tray will not be crushed by the belt sheet when the belt sheet is pulled back and the loop diameter is reduced. If the feeding is to be performed, the banding pressure by the feed roller is loose (weak), and it may be difficult to feed the belt sheet smoothly and well.

Japanese Patent No. 3075666

The present invention has been made in view of the above-described problems of the prior art, and the problem is that the initial loop formed by feeding out the belt sheet is banded with a pull-back throttle amount suitable for the product. An object of the present invention is to provide a banding device that can perform the above.
It is another object of the present invention to provide a banding device that can vary the pressure when the band sheet is fed out and the pressure when the band sheet is pulled back, and can perform stable banding packaging.

The technical means taken by the present invention in order to solve the above-mentioned problem is that the belt sheet is fed out in a loop shape so as to surround the product placing portion, the leading end portion of the belt sheet is fixed, the opposite side is pulled back, and the initial loop In a banding device that squeezes the belt sheet along the outer periphery of the product and bonds and cuts the portion that overlaps the tip of the belt sheet to band the belt sheet on the product, the loop extending from the initial loop to the product outer periphery for each product A storage unit that stores aperture information to be narrowed down to a shape, an identification unit that identifies a product, and a control unit that reads back aperture information corresponding to the identified product and controls a pull-down aperture when banding. the shall be the feature.

As the band sheet used for the above-mentioned banding, it is provided with a rigidity (strength of stiffness) that advances straight along the inner side of the annular guide by feeding by a feed roller, and a band-shaped sheet made of synthetic resin or a paper sheet. use. And the adhesion | attachment of the part which superimposes a sheet | seat may be what kind of adhesion | attachment methods, such as heat welding and an adhesive agent.
As the above-mentioned drawing information, in addition to the amount (length) of pulling back the rear side of the band sheet forming the loop in order to reduce the diameter from the initial loop formed by extending the band sheet to the loop shape along the outer periphery of the product, In order not to deform the tray when it is hung, the hardness of the tray (container) with a lid is input.

In addition, as a specifying means for specifying a product, the product number (product number), a tray number of a tray with a lid (container) is input from the operation unit, or the tray number is automatically measured by measuring the size of the tray with a lid. And a method of automatically specifying the product number based on the shape and color of the product obtained from the image of the product.
The product referred to in the present invention means both a product and a tray with a lid (container) containing the product.

  According to the above means, since the aperture information is stored in the storage means for each product or lidded tray (container) to be strapped, when the product is specified by the specifying means, the aperture corresponding to the specified product is specified. The information is read out, and it is pulled back from the initial loop based on the read aperture information, and then it is narrowed and banded. Therefore, it is possible to band the pull-back stop in a state suitable for the product.

In addition, the storage means includes printing means for storing product information for printing in addition to the aperture information for each product, and printing on a belt sheet based on the product information, the control means together with printing on strip sheet reads the product information and stop information corresponding to the product specified, but it may also be configured to control the retraction stop when the strapping.
The product information may be printed directly on the belt sheet or may be printed on both the belt sheet and the printing paper by attaching a printing paper (label) in advance according to the contents of printing on the belt sheet. Good.

  According to the above means, since the aperture information for each product and the product information for printing are stored in the storage means, the product information related to the product is read and applied by specifying the product. A predetermined print item is printed on the belt sheet. Then, the belt sheet on which the product information is printed is drawn out to form an initial loop, and similarly to the above, banding suitable for the product is performed based on the aperture information of the product.

Also, the storage unit, but it may also be so provided and product file for storing trays code and product information for each product, and a tray file for storing information and aperture tray code for each tray.
According to the above means, since the aperture information is stored in the tray file that stores the information for each tray, the storage capacity can be reduced as compared with the method for storing the aperture information for each product. Moreover, by specifying the product, it is possible to read not only aperture information for banding but also product information for printing on the belt sheet.

Furthermore, the aperture information shall be the amount that pulling back the band sheet to shrink to the fastening loop condition along the initial loop product periphery (length).
According to the above means, since the amount (length) of pulling back the belt sheet is controlled to change from the initial loop state to the tightened loop state, there is little possibility of over-squeezing, and the drawing process can be performed at high speed. it can.

Or, wherein the aperture information is not good even slip limit force of the feed roller that performs feeding and pulling back the band sheet.
According to the above means, since the management is performed based on the slip limit force of the feed roller, the aperture information can be made the same if the product has the same softness even if the size of the product is different. Accordingly, it is possible to easily perform the setting operation of aperture information in the storage means.

Further, the belt sheet is fed out in a loop so as to surround the product placement portion, the front end portion of the belt sheet is fixed, the opposite side is pulled back, and the initial loop is narrowed to the loop along the outer periphery of the product, and the front end portion of the belt sheet In the banding device for bonding and cutting the overlapping portions and banding the band sheet on the product, the feed section for feeding or pulling out the band sheet includes a pair of upper and lower feed rollers, and a pressing means for moving the rollers closer to and away from each other. the a, and pressure at which feed the strip sheet by the pressing means, characterized by comprising control means for controlling made different pressure when pulling back the band sheet.

  According to the above means, since the pressure by the pair of upper and lower feed rollers for feeding out or pulling back the belt sheet can be changed between the time of feeding and the time of drawing back (squeezing), the belt sheet can be reliably fed out and pulled back.

Then, the pressing means is a pressing cam which switches and away with respect to the other feed roller of one of the pair of upper and lower feed rollers, the control means shall be the configuration for controlling the rotation of the pressing cam. As the pressing cam, an eccentric cam having a different distance from the rotation center to the outer peripheral surface is generally used.
According to the above means, since the pressing cam is an eccentric cam in which the distance from the rotation center to the outer peripheral surface is not constant and the distance is variable from one to the other in the circumferential direction, the pressing cam is rotated. The pressure between the feed rollers can be easily adjusted by dynamic adjustment.

Further, the banding device has a printing unit for printing on a band sheet to be wrapped and wrapped, and the control data of the control unit is associated with the product data related to the printing or the tray data of the tray for storing the product. and, but it may also be provided with a reading means for further reading out the item data or trays data.
According to the above means, since the control data for controlling the rotation of the eccentric cam member of the pressing means is associated with the product data or the tray data related to the printing, the product data or the tray data is related to the printing. By selecting, the belt sheet can be fed out and pulled back (squeezed) with a pressure suitable for the product or tray.

According to the banding device of the present invention, according to the configuration of the first aspect, the band sheet suitable for the product or the tray with a lid (container) can be squeezed, thereby reliably performing the banding suitable for the product. it can. Therefore, it is possible to easily prevent the product or the tray from being deformed due to the excessive narrowing of the belt sheet, and the detachment of the belt due to insufficient narrowing of the belt sheet.
Further, compared to a method of adjusting the band sheet aperture amount every time the band is applied, it is possible to eliminate waste of the test product and the band sheet for determining the adjustment amount.
In addition, it is possible to improve the workability of the banding work because it is possible to print a predetermined print item on the band sheet and band it according to the product simply by specifying the product necessary for printing. it can.

Or, the configuration of the second aspect, since the diaphragm information tray file for storing information for each tray is stored, can be reduced storage capacity compared to the method for storing information aperture for each product. Moreover, by specifying the product, it is possible to read out both the aperture information for banding and the product information for printing on the belt sheet.

Furthermore, according to the configuration of the fourth aspect, the slip limit force of the feed roller becomes the same if the softness is the same even if the size of the product is different, so that the aperture information can be set to be the same. Accordingly, it is possible to easily perform the setting operation of aperture information in the storage means. Or, when used with a method of controlling the amount of retraction, the retraction amount of the set value can be relatively easily determined, and it is possible to straw early the diaphragm process rather final.

According to the fifth aspect of the present invention, the pressure of the pair of upper and lower feed rollers can be varied at the time of feeding and retracting (squeezing) the belt sheet, so that the feeding and withdrawal (squeezing) of the belt sheet is ensured. It can be carried out. Therefore, it is possible to solve the problems that it is difficult to smoothly feed the belt sheet, the pulling back (drawing) is too strong and the product is crushed, or the pulling back (drawing) is too weak and the banding is loose.
Further, by selecting product data or tray data in relation to printing, it is possible to feed and retract (squeeze) the belt sheet with a pressure suitable for the product or tray.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 7 show an outline of the banding device A, which is arranged on the side of the guide 1 and an annular guide 1 that forms an initial loop around the product W for circulating the band sheet a. Product information on the loading section 2 of the belt sheet roll a ′, the label pasting section 3 for pasting the label b for barcode printing on the belt sheet a, the label b and the belt sheet a stuck on the belt sheet a A printing unit 4 for printing the product sheet, a drive unit 5 for feeding and pulling the belt sheet on which the product information is printed along the inner surface of the annular guide 1, and a rear end side of the belt sheet from the initial loop state to pull back the product sheet W. A heat welding part 6 for reducing the diameter into a loop shape along the outer periphery and heat-welding the front end part and the overlapping part of the belt sheet, a cutter 7 for cutting the belt sheet, and a drive part for driving the heat welding part 6 and the cutter 7 up and down 8 and more product information etc. are displayed The display unit 9 and the operation unit 10 are configured.

The annular guide 1 has a pair of front and rear side plates 1a and 1b in which a substantially rectangular window hole 11 for opening and removing the product W is opened, and the front and rear side plates 1a and 1b are slightly wider than the tape width of the belt sheet a. The bottom plate 1c is opposed to each other at an interval and rotated in the circumferential direction along a position that is outside the opening edge of the window hole by a predetermined dimension, and the surface of the bottom plate 1c acts as a guide surface for the belt sheet a. To do. The bottom plate 1c is formed in an approximately elliptical shape along the edge of the window hole so that the fed belt sheet a can be smoothly guided and the initial loop can be reliably formed. The bottom plate 1c is attached so that the leading end and the terminal end sandwiching the opening 45 formed in the bottom plate 1c are shifted in the vertical direction so that a loop can be formed by overlapping the leading end of the fed belt sheet a and the roll a ′. Further, a stopper 46 is attached to the inner surfaces of the side plates 1a and 1b above the starting end side of the bottom plate 1c, and the leading end of the belt sheet a is positioned.
The lower hole edge of the window hole of the guide 1 functions as a placement portion for the product W. In addition, the shape of the window hole established in the front and rear side plates is not limited to a rectangular shape, and the shape is arbitrary as long as it does not interfere with the taking in and out of the product.

  The loading section 2 of the band sheet roll a ′ arranged on the side of the guide 1 is a place where a roll a ′ in which a tape-shaped band sheet as a banding material is wound in a roll shape is loaded, A rotating shaft 12 with a built-in one-way clutch that rotates freely in the direction in which the belt sheet is fed toward the guide and rotates in the reverse direction is attached to the belt sheet. It is comprised so that it may drive. When the belt sheet roll a 'is reversely rotated by the motor 13, the belt sheet roll a' is retracted by the reverse rotation of the driving unit 5 described later. In addition, a door (not shown) that can be freely opened and closed is attached to the front surface of the loading unit 2 so that dust, dust, and the like do not adhere to the belt sheet. The rotating shaft 12 is equipped with a friction plate brake structure 14 that prevents excessive rotation with respect to the rotation in the direction in which the belt sheet is pulled out.

  The leading end of the belt sheet a of the belt sheet roll a ′ loaded in the loading unit 2 is supplied to the drive unit 5 via the guide roller 15 and the guide plate 15 ′ attached to the main body case. In operation, the belt sheet a is fed out to the inside of the guide 1. In the middle of the guide plate 15 ′, a label sticking unit 3 is arranged, and a printing unit 4 for printing on a belt sheet to which a label sheet is stuck downstream of the label sticking unit 3 and upstream of the drive unit. Is arranged.

  The label sticking unit 3 is a dispenser that peels the label paper b from the base roll b ′, the label roll b ″ on which the label paper b is detachably attached, the mount take-up reel 16, and the mount b ′. 17 and a pressing member 18 for pressing the label paper b peeled off from the mount b ′ to the band sheet a is disposed downstream of the dispenser 17, and the mount take-up reel 16 is a motor. By being driven and rotated at 19, the mount b 'to which the label paper b is stuck is drawn out from the label roll b ".

  The printing unit 4 that prints product information on a belt sheet to which a label sheet is attached includes an ink ribbon 20, a thermal head 21, a platen roller 22, a stepping motor 23 that drives and rotates the platen roller 22, and the platen roller. The thermal head 21 and the platen roller 22 are arranged to face each other. As a result, a predetermined item relating to the product is printed on the belt sheet a, and a JAN code (bar code) is printed on the label paper b. The printing on the belt sheet and the label paper is managed and controlled by the length from the leading edge of the belt sheet. This will be described later.

The platen roller 22 in the printing unit 4 is horizontally supported on one side of a platen roller support frame 25 having a substantially U-shaped cross section, and the other end side of the platen roller support frame 25 is a frame 26. Further, the platen roller 22 supported in the platen roller support frame 25 is inserted into an arc guide hole 28 formed in the frame so that the shaft 27 is centered on the shaft 27. The vertical movement of the platen roller 22 is guided by the arc guide hole 28.
The moving mechanism 24 for moving the platen roller 22 toward and away from the thermal head 21 fixes a pressing piece 30 that pushes the platen roller support frame 25 downward to a shaft 29 that is horizontally mounted on the frame 26. The platen roller support frame 25 is pressed downward about the shaft 27 by the downward rotation of the pressing piece 30 by the rotation, whereby the platen roller 22 is pressed against the thermal head 21. The rotation of the shaft 29 on which the pressing piece 30 is attached is configured such that the rotation shaft of the motor 31 and the shaft 29 are connected by a plurality of link pieces 32, and the rotation of the motor 31 is transmitted to the shaft 29. Has been.

Further, a flag 33 for detecting contact / separation (opening / closing) of the platen roller 22 with respect to the thermal head 21 is attached to an end of the shaft 29 to which the pressing piece 30 is fixed. 34, 34 'are arranged. Further, the operation of bringing the platen roller 22 into contact with the thermal head 21 is performed by the rotation of the motor 31 described above. The operation of moving the platen roller 22 away from the thermal head 21 is performed by the platen roller support frame 25 and the frame 26. The platen roller support frame 25 is pulled upward by the tension of the tension spring 35, and the platen roller 22 is separated from the thermal head 21. The separation of the platen roller 22 is performed by the tension spring 35 functioning when the pressing piece 30 is rotated in the upward direction away from the platen roller support frame 25 by the rotation of the motor 31.
An operation lever 36 is attached to the front side end of the shaft 29 to which the pressing piece 30 is fixed, so that the pressing of the platen roller support frame 25 by the pressing piece 30 can be released manually.

The drive unit 5 that supplies the belt sheet a on which predetermined printing has been performed by the printing unit 4 to the guide 1 side is composed of a pair of upper and lower feed rollers 5a and 5b, and the lower feed roller 5b is supported at a fixed position. The upper feed roller 5a is supported so as to be movable in the vertical direction.
The lower feed roller 5b is configured to be driven and rotated by a motor 5c. The upper feed roller 5a is linked to the vertical movement (opening / closing movement) of the platen roller 22 in the printing unit 4 and is connected to the lower feed roller 5b. It is comprised so that the contact pressure with respect to 5b may switch strength. The band sheet a is attached by the pair of upper and lower feed rollers 5a and 5b, and the lower feed roller 5b is driven to rotate in the forward rotation direction (clockwise direction), whereby the band sheet a is fed out toward the guide 1. The belt sheet 1 is pulled back by driving and rotating in the reverse direction (counterclockwise direction).

The upper feed roller 5a is horizontally supported by a rectangular frame 37 so that the frame 37 can be moved up and down with respect to the frame 26 on a vertical line passing through the center of the lower feed roller 5b. ing. The frame body 37 is configured such that the pressing operation is turned ON / OFF by a pressing cam 38 pivotally supported on the frame 26 in the vicinity of the frame body 37.
The rotation of the pressing cam 38 is performed by connecting the shaft 29 to which the pressing piece 30 of the printing unit 4 is fixed and the pressing cam 38 by a link 39, and the pressing cam 38 swings through the link 39 by the rotation of the shaft 29. It is comprised so that it may be moved (refer Fig.4 (a) and FIG.5 (a)).

  The pressure at which the belt sheet a is attached by the upper feed roller 5a and the lower feed roller 5b in the drive unit 5 is such that the upper feed roller 5a (movable side) is moved to the lower feed roller 5b (fixed side). On the other hand, in addition to the method of switching on / off (ON / OFF), the pressure to be attached may be adjusted in a plurality of stages. As an adjustment method thereof, the shape of the cam surface of the pressing cam can be changed. Hereinafter, the embodiment will be described with reference to FIGS.

The upper feed roller 5a is horizontally supported by a rectangular frame 37 so that the rotation center of the feed roller 5a moves up and down on a vertical line passing through the rotation center of the lower feed roller. Is supported on the frame 26 so as to be vertically rotatable.
A pressure receiving arm portion 37 ′ is integrally formed on the side portion of the frame body 37, and the pressure receiving arm portion 37 ′ is rotatably supported by the frame 26 in the vicinity of the frame body 37. The pressing cam 38 'is in contact with the outer peripheral surface. The frame body 37 is urged by a spring or the like in a direction in which the upper feed roller 5a is separated from the lower feed roller 5b.
The pressing cam 38 ′ is configured as an eccentric cam in which the distance from the rotation center to the outer peripheral surface in contact with the pressure receiving arm portion 37 ′ is not constant, and the distance changes in the middle position in the circumferential direction. That is, one half is formed at the distance L1, and the other half is formed at the distance L2, where distance L1> distance L2. As a result, the position where the pressing cam 38 'rotates and contacts the pressure receiving arm portion 37' of the frame 37 holding the upper feed roller 5a is the peripheral surface portion of the distance L1 and the peripheral surface portion of the distance L2. The distance from the lower feed roller 5b is varied by the difference between the distance L1 and the distance L2.
The rotation of the pressing cam 38 ′ is performed by connecting the shaft 29 to which the pressing piece 30 in the printing unit 4 is fixed and the pressing cam 38 ′ with a link 39, and pressing the shaft 29 by rotating the shaft 29. The cam 38 'is configured to be swung through the link 39 (see FIGS. 14 and 15).

Adjustment of the pressure for rotating the pressing cam 38 'to attach the belt sheet a by the feed rollers 5a and 5b detects the contact / separation (open / close) of the platen roller 22 in the printing unit 4 with respect to the thermal head 21. This is configured to be performed using the flag 33. That is, the flag 33 is attached to the shaft 29 on which the pressing cam 38 ′ rotates, and the sensors 34 and 34 ′ are arranged on the rotation locus of the flag 33, and move between the sensors 34 and 34 ′. It can be adjusted by changing the stop position of the flag 33 (see FIG. 16).
That is, a state in which the belt sheet a is fed out (a state in which the flag 33 blocks the sensor 34 ': a state in which the platen roller 22 of the printing unit 4 is separated from the thermal head 21 and the feed rollers 5a and 5b of the driving unit 5 approach) 5 (a) and 5 (b)), the platen / feed roller opening / closing drive motor (stepping motor) 31 is driven in reverse rotation, and the number of pulses after which the motor 31 is stopped, or the timing (position) to stop is stopped. It is set in information hardness data (see FIG. 11).
By changing the position where the flag 33 stops, the position of the circumferential surface where the pressing cam 38 ′ contacts the pressure receiving arm portion 37 ′ of the frame body 37 holding the upper feed roller 5 a can be changed, and thereby the frame body 37 can be contacted. The distance between the upper feed roller 5a and the lower feed roller 5b is variable. Note that the change in the distance from the rotation center of the pressing cam 38 ′ to the outer peripheral surface is not limited to the distance change shown in the present embodiment, and the distance from the center to the outer peripheral surface is continuous from one to the other in the circumferential direction. It is good also as an increase form.

  The belt sheet a supplied into the guide 1 is guided along the inner surface of the guide 1 at the downstream side of the drive unit 5 and below the guide to form an initial loop, and then placed in the guide. The initial loop is squeezed to reduce the diameter along the outer peripheral surface of the placed product W, the portion overlapping the leading end portion of the band sheet a is thermally welded, and the thermal welding for cutting the band sheet a connected to the band sheet roll a ′ is performed. A part 6, a cutter 7, and a drive part 8 that drives the heat welding part 6 and the cutter 7 up and down are arranged.

The heat welding portion 6 includes a first presser plate 40 and a first presser plate 40 vertically arranged at predetermined intervals in the opening 45 of the lower bottom plate 1c in the window hole 11 of the guide 1 toward the feeding direction of the belt sheet. 2 presser plates 41, a heat welding plate 42 disposed between the first presser plate 40 and the second presser plate 41, and the first presser plate 40, the second presser plate 41, and the heat weld plate 42. It is comprised with the receiving plate 43 arrange | positioned freely in the position from the side of the guide 1. As shown in FIG.
The first presser plate 40 disposed near the drive unit 5 is provided with a through hole 44 into which the band sheet a is inserted and placed slightly below the upper end surface, and the band sheet fed out by the operation of the drive unit 5. The tip of a is supplied to the guide 1 through the through hole 44. Therefore, the upper end of the second presser plate 41 arranged on the downstream side of the first presser plate 40 is flush with the lower hole edge of the through hole 44 of the first presser plate 40 or below the lower hole edge. It is arranged to become.
The heat welding plate 42 disposed between the first presser plate 40 and the second presser plate 41 is welded after the band sheet a is pressed by the first presser plate 40 and the second presser plate 41, The upper end of the heat welding plate 42 is positioned below the upper end of the second presser plate 41.

  A receiving plate 43 for receiving the upper end surfaces of the first pressing plate 40 and the heat welding plate 42 is disposed on the side (back side) of the guide 1 and orthogonal to the guide, and the upper surface of the receiving plate 43 is the guide 1. Is held flush with the lower hole edge of the window hole 11 and protrudes into the guide 1 to form a product placement surface. And the front-end | tip part of the strip sheet a is inserted in the channel | path (space) divided by this receiving plate 43 and the baseplate 1c of the guide 1, The front-end | tip part of the strip sheet | seat a is the side plate 1a in the downstream from the said opening 45, Positioning of the tip is performed by abutting against a stopper 46 projecting from the inner surface of 1b.

  The cutter 7 heat-bonds the overlapping portion of the belt sheet a to complete the loop, and then cuts the belt sheet continuous with the loop in the vicinity of the weld portion. The first presser plate 40 and the heat welding plate 42 are cut. And a belt penetrating the through hole 44 by moving up and down to a position exceeding the through hole 44 of the first presser plate 40 along the side surface of the first presser plate 40. The sheet a is configured to be cut by the shearing action of the hole edge of the through hole 44 of the first pressing plate 40 and the cutter 7.

  The drive unit 8 that drives the heat welding unit 6 and the cutter 7 up and down includes a motor 47 and a cam mechanism 48. The cam mechanism 48 includes the first press plate 40 and the second press plate. 41, the thermal welding plate 42, and the cutter 7. Further, the first presser plate 40, the second presser plate 41, the thermal welding plate 42, and the cutter 7 are configured to move up and down sequentially with a time difference. Then, in order to control the operation of the cam mechanism 48, the rotating plate 52 is fixed to the shaft that rotates the cam, the origin provided at a predetermined position on the outer periphery of the rotating plate 52 is detected by the cam origin sensor 53, and the drive unit 8 To be controlled.

In addition, the leading end of the belt sheet a supplied for banding reaches a predetermined position at a predetermined position on the near side (upstream side) from the position where the leading edge of the belt sheet a of the guide 1 is stopped. A belt sheet tip detection sensor (stop sensor) 50 for detecting this is disposed. The driving of the driving unit 5 for feeding out the band sheet a is stopped by the detection signal of the band sheet leading edge detection sensor 50, and the feeding until the leading edge of the band sheet a contacts the stopper is controlled again.
Further, a product detection sensor 51 is installed at a position before the position where the product W is placed in the guide 1 so that it is detected whether or not the product W is placed at a predetermined position in the guide 1. If the product W is not detected, the band sheet a is stopped.

FIG. 8 is a block diagram showing an electrical configuration of a control unit that controls the operation of banding of the banding device A configured as described above and a printing unit that performs printing on the banding band sheet a.
The band control unit 54 is connected to the print control unit via the communication INF so as to be able to communicate with each other. The control units 54 and 59 each include a CPU (central processing unit) 55, which is a microcomputer. 60.
The CPU 55 includes a ROM 56, a RAM 57, a banding mechanism driving unit 58, a band sheet leading end detection sensor (stop sensor) 50, a product detection sensor 51, a cam origin sensor 53, a label pasting unit (label issuing unit) 3 via a bus 55a. Is connected.
The ROM 56 stores a control program executed by the CPU 55, and the RAM 57 is provided with a work area for performing calculations and the like.

  As the banding mechanism driving unit 58, ON / OFF of energization to the heat welding plate 42 of the heat welding unit 6, opening / closing driving motor 31 of the platen roller 22 and upper feed roller 5a, and driving motor for the lower feed roller 5b are provided. 5c, belt sheet take-up drive motor 13, heat welding portion 6 and vertical drive motor 47 of the cutter 7, and platen roller drive motor 23, and the drive / stop of these are controlled.

A ROM 61, a RAM 62, a display operation unit 9, and a key operation unit 10 are connected to the CPU 60 of the print control unit 59 through a bus 60a.
The ROM 61 stores a control program to be executed by the CPU 59. The RAM 62 stores a print format file for storing a print format number for printing a predetermined item relating to a product on a banded belt sheet (including a label). File areas such as a product file (see FIG. 10) for storing various data relating to the product W (see FIG. 10) and a tray file (see FIG. 11) for storing various data relating to the tray are provided. Yes.
The display operation unit 9 is composed of a touch panel, and displays input data, preset data, and various messages based on commands from the CPU 60.
The key operation unit 10 includes various switches for starting and stopping the apparatus and a keyboard for inputting data and the like.

  As shown in FIG. 10, the product file stored in the RAM 62 includes a product number (product number), a JAN code (bar code), a product name, a unit price, a tray number, raw materials, and the like. The product can be specified by.

  In addition, as shown in FIG. 11, the tray file includes the tray information, the tray size, the print format number, and the drawing information (band sheet information) for reducing the diameter of the initial loop formed by the band sheet into a shape along the outer periphery of the product. (Retraction amount, tray hardness) are provided, and the product can be specified by the tray number, and stable banding is possible by the pull back amount when the specified product is banded.

  As shown in FIG. 12, a print format number, a print item, and a print position are set in the print format file, and the print position is set with respect to the distance from the front end of the band sheet and the position with respect to the width of the band sheet. When the JAN code (bar code) is printed by attaching a label sheet to the belt sheet, the application unit is driven so that the print position data of the JAN code matches the position where the label sheet is attached.

Next, the outline of the control of the operation of tying the product will be described based on the flowchart of FIG.
(Start) ... Turn on the power switch of the banding device.
(SP1)... It is determined whether the product number input has been performed from the display operation unit 9 or the key operation unit 10, and the process is repeated until the product number input is confirmed.
(SP2) ... Product information corresponding to the input product number is read from the product file. Next, the tray information corresponding to the tray number in the product file is read from the tray file. Next, the print format information corresponding to the print format number in the tray information is read from the print format file.
(SP3)... The belt 5 is started to be fed to the guide 1 by rotating the feed roller of the drive unit 5. At the same time, when the print position of each item of the read print format information coincides with the position of the print section from the leading end of the belt sheet a, the downward bias of the upper feed roller in the drive section 5 is released, and the print The platen roller 22 of the section 4 is moved and brought into contact with the thermal head 21 to print the corresponding item on the belt sheet a. In addition, the motor 19 that drives and rotates the mount take-up reel 16 in the label attaching portion 3 is driven so that the print position data of the JAN code matches the position where the label paper b is attached. At this time, the position where the label paper b is attached to the belt sheet a can be determined by managing the amount of rotation from the feed start of each of the stepping motors 5c and 23 that drive the feed roller 5b or the platen roller 22. Yes.
In addition, when the JAN code is printed based on the printing position data, the JAN code (bar code) can be printed on the label paper b attached to the belt sheet a. When printing is completed, the upper feed roller 5a in the drive unit 5 is urged downward, and the clamping force by the lower feed roller 5b is increased, and the platen roller of the print unit 4 is pulled away from the thermal head 21. Thus, the printed belt sheet a can be fed out at high speed (see FIG. 4). The feeding of the belt sheet a is supplied to the guide 1 through the through hole 44 of the first presser plate 40 constituting the heat welding portion 6.
(SP4) ... It is determined whether or not the leading end portion of the belt sheet a fed out by the operation of the driving unit 5 is detected by the belt sheet leading edge detection sensor 50 arranged at a predetermined position of the guide 1, and the processing is repeated until YES is obtained. . That is, it is determined whether or not the supply of the belt sheet a to the guide 1 is completed and the initial loop is completed.
(SP5) ... Then, the pressing force of the upper feed roller 5a in the drive unit 5 to the lower feed roller 5b is adjusted to a position corresponding to the hardness data of the diaphragm information. That is, the platen / feed roller opening / closing drive motor (stepping motor) 31 is controlled. Thereby, the slip limit force of the drive part 5 is adjusted. This adjustment is a state in which the belt sheet a is fed out (a state in which the flag 33 blocks the sensor 34: a state in which the platen roller 22 of the printing unit 4 is separated from the thermal head 21 and the feed rollers 5a and 5b of the driving unit 5 approach). 5 (a) and 5 (b)), the platen / feed roller opening / closing drive motor (stepping motor) 31 is driven in reverse rotation, and the number of pulses after which the motor 31 is stopped, or depending on the stop timing (position). The pressure of the feed rollers 5a and 5b is adjusted. The number of pulses for stopping the motor 31 is set in the hardness data of the aperture information (see FIG. 11). For example, as shown in FIG. 16, when the flag 33 moves from the sensor 34 toward the sensor 34 ′, the pressure of the feed rollers 5 a and 5 b changes from “strong” to “weak”.
(SP6)... It is determined whether the product W corresponding to the product number input by the operator using the operation unit is placed on the banding position (product placement unit) in the guide 1 and the product detection sensor 51 detects the product. The determination is repeated until YES is reached.
(SP7)... The belt roller a is reversely rotated (counterclockwise) so that the amount of drawing information set in the tray information is pulled back, the belt sheet a is drawn back, and the initial loop is drawn. The band sheet roll a ′ is reversely rotated with a small force so that the pulled-back band sheet a does not loosen, and is wound around the roll. That is, the belt sheet roll a ′ is rotated in reverse by driving the motor 13 (see FIGS. 5 and 7A).
When the belt sheet is drawn back, the initial loop is squeezed. As the squeezing progresses, the belt sheet squeezes the product W, and a reaction force exceeding the slip limit force is applied to the drive unit (feed roller) 5. The feed roller slips to stop pulling back the belt sheet a, and the diameter reduction stops (see FIG. 7B).
(SP8) ... The belt sheet continuous with the belt sheet roll a 'located under the leading edge of the belt sheet a and the leading edge of the belt sheet a by driving the heat welding unit 6 and the driving unit 8 that moves up and down the cutter 7. And the portion near the upstream side of the welded portion is cut with a cutter 7 (see FIG. 7C).
Thus, as shown in FIG. 9, banding and pricing with a band sheet printed with product information such as product name, price, raw material, barcode, etc. is completed.

  In the above-described embodiment, the product number is input as a means for specifying the product. However, instead of inputting the product number, the tray number may be input, the aperture information may be read from the tray file, and the banding aperture control may be performed. .

  Also, instead of inputting the product number and the tray number as described above, as in Japanese Patent No. 3133285, the tray number is measured and the tray number is automatically specified, or the product image is taken from the photographed product. The product number (product number) may be specified based on the shape and color, and thereby the aperture control suitable for the product may be performed and banded.

  Further, instead of the product detection sensor 51 detecting that the product is placed at a predetermined position in the guide 1 in the above-described embodiment, the banding operation is started by the input of the start operation of the operation unit. It may be.

  In addition, detection of whether or not a product is placed on the product placing unit described above is performed by providing a weighing pan at the product placing position and detecting the presence or absence of the product by measuring the weight of the product using the weighing pan. Also good.

The schematic front view which shows an example of implementation of the banding apparatus which concerns on this invention. The top view which shows the outline of the mechanism part. The side view which shows the outline of the mechanism part. (A) is an enlarged view showing a label sheet attaching part, a printing part, and a drive part (feed roller), (b) is an explanatory view showing a positional relationship of a drive mechanism that moves up and down the platen roller. (A) is the same enlarged view at the time of pulling back and narrowing a belt sheet, (b) is explanatory drawing which shows the positional relationship of the drive mechanism which raises / lowers the platen roller in the state. (A) is a top view which shows the appearance structure of a receiving plate, (b) is explanatory drawing which shows formation of an initial stage loop by supply of a strip sheet. Explanatory drawing which shows the narrowing process of a belt sheet. The block diagram which shows the electrical structure of a banding control part and a printing control part. (A) is a perspective view of the product which completed the banding, (b) is sectional drawing which follows the (X)-(X) line of (a) figure. Explanatory drawing which shows an example of a goods file. An explanatory view showing an example of a tray file. FIG. 3 is an explanatory diagram illustrating an example of a print format file. It is a flowchart explaining banding operation | movement. The enlarged view which shows the modified example of the press cam which changes the pressure of a drive part (feed roller), and shows the state adjusted to the low pressure state. The enlarged view which shows the state which adjusted the press cam to the state of strong pressure. Explanatory drawing which shows the positional relationship of the drive mechanism which adjusts the pressure of a press cam.

Explanation of symbols

A ... Banding device a ... Band sheet
b ... Label paper 1 ... Guide
3 ... Label paper sticking part 4 ... Printing part
5 ... Drive section (feed roller) 6 ... Heat weld section
7 ... Cutter 8 ... Heat welded part / Cutter vertical drive part
9 ... Display unit 10 ... Operating unit 38, 38 '... Pressing cam

Claims (5)

The belt sheet is fed out in a loop so as to surround the product placement section, the tip of the belt sheet is fixed, the opposite side is pulled back, the initial loop is narrowed to the loop along the outer periphery of the product, and the tip of the belt sheet is superposed In the banding device that bonds and cuts the part to band the band sheet on the product,
For each product, storage means for storing aperture information and product information for printing from an initial loop to a loop shape along the outer periphery of the product ,
An identification means for identifying the product;
Printing means for printing on the belt sheet based on the product information;
Equipped with a,
A banding device for reading product information and aperture information corresponding to the product specified by the specifying unit, printing the band information on the band sheet, and controlling a pullback aperture at the time of banding. The storage means
A product file that stores a tray code and product information for each product,
A tray file that stores the tray code and aperture information for each tray,
Strapping device according to claim 1, wherein the formed Rukoto from. The belt sheet is fed out in a loop so as to surround the product placement section, the tip of the belt sheet is fixed, the opposite side is pulled back, the initial loop is narrowed to the loop along the outer periphery of the product, and the tip of the belt sheet is superposed In the banding device that bonds and cuts the part to band the band sheet on the product,
For each tray, aperture information that narrows down from the initial loop to a loop shape along the outer periphery of the product, a tray file that stores a tray code for identifying the tray,
A product file that stores a tray code and product information for each product,
An identification means for identifying the product;
Control means for reading the aperture information corresponding to the product specified by the specifying means and controlling the pullback aperture when banding;
A banding device characterized by comprising: The belt sheet is fed out in a loop so as to surround the product placement section, the tip of the belt sheet is fixed, the opposite side is pulled back, the initial loop is narrowed to the loop along the outer periphery of the product, and the tip of the belt sheet is superposed In the banding device that bonds and cuts the part to band the band sheet on the product,
For each product, storage means for storing aperture information that narrows down from the initial loop to a loop shape along the product outer circumference;
An identification means for identifying the product;
Control means for reading the aperture information corresponding to the identified product and controlling the pullback aperture when banding,
The banding device according to claim 1, wherein the squeezing information is a slip limit force of a feed roller that feeds and pulls out the band sheet . The belt sheet is fed out in a loop so as to surround the product placement section, the tip of the belt sheet is fixed, the opposite side is pulled back, the initial loop is narrowed to the loop along the outer periphery of the product, and the tip of the belt sheet is superposed In the banding device that bonds and cuts the part to band the band sheet on the product,
The feed unit that feeds or pulls back the belt sheet has a pair of upper and lower feed rollers and a pressing means for approaching and separating the two rollers, the pressure when the belt sheet is fed by the pressing means, and when the belt sheet is pulled back Equipped with control means to control the pressure differently,
Furthermore, it has a printing means for printing on the belt sheet to be wrapped and wrapped, and the control data of the control means is associated with the product data related to the printing or the tray data of the tray containing the product, A banding device comprising reading means for reading product data or tray data .

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