JP2008087807A - Binding machine, control method and winding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the trailing end of a binding device from entering a binding machine and to keep the trailing end of the binding device on the outside of the binding machine. <P>SOLUTION: The binding machine includes a control section 40 that continues or discontinues the drawing of twist tie 14 based on whether a reel 2 has been detected within a predetermined set period of monitoring. In this example, a sensor 7 detects a through-hole 8 and outputs a detection signal to the control section 40. Based on the detection signal, the control section 40 controls the drawing of the twist tie 14. For example, when any through-hole 8 is not detected by the sensor 7, the control section 40 determines that the reel 2 has not rotated, and then discontinues the drawing of the twist tie 14. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a binding machine that can be applied to a twist tie binding machine that binds a bag mouth with a linear or band-like binding tool such as a covered wire or twist tie wound around a winding tool, a control method therefor, and a winding method. It is related to attachments.

  Specifically, when the presence or absence of rotation of the wrapping tool is detected, and the presence or absence of rotation of the wrapping tool is not detected within a predetermined monitoring set time, the end of the binding tool is It is possible to prevent the inside of the binding machine from entering, and to allow the terminal end of the binding tool to remain outside the binding machine.

  Conventionally, a user has used a binding machine in order to automatically bind a wire-like or band-like binding tool (covered wire, twist tie) to the mouth of a bag packed with goods or the like. For example, the user pushes the bag mouth into the binding mouth of the binding machine after bundling the mouth of the bag. At this time, the binding machine senses that the bag mouth has been pushed into the binding mouth, pulls out the twist tie wound around the winding tool (reel) for a predetermined length, and wraps around the bag mouth. Place twist tie and cut. After cutting, both ends of the twist tie are held by a tip S-shaped shaft rotating member, and the rotating member is rotated by a predetermined number of screws. This twists the twist tie and binds the bag mouth. In this way, the bag mouth is automatically bundled by the twist tie.

  In connection with such a conventional example, Patent Document 1 discloses a binding device. According to this binding device, the binding base portion is provided, and the bag mouth of the bag is bound by twisting the binding material of a predetermined length wound around the spool (reel). As a result, the bag mouth is automatically bound by the binding material.

JP S44-18480 (page 2 Fig. 1)

  By the way, according to patent document 1 which concerns on a prior art example, a binding material is pulled out so that it may unwind from a reel, and a bag mouth is tied with a binding material by a binding base part. However, since the reel is pulled and rotated by the binding material, the binding base portion tries to bind the bag mouth with the binding material even if the end portion of the binding material is separated from the reel. For this reason, the terminal part of the binding material often enters the inside of the binding base part. Thereby, the terminal part of the binding material remains inside the binding base part, which may cause a failure. When taking out the terminal part of the binding material remaining inside, it is often necessary to disassemble the binding base part one by one.

  Therefore, the present invention solves such a problem related to the conventional example, and prevents the terminal portion of the binding material (binding tool) from entering the inside of the binding device (binding machine) and binds it. It is an object of the present invention to provide a binding machine, a control method thereof, and a winding tool in which a terminal portion of the tool remains outside the binding machine.

  In order to solve the above-described problem, the binding machine according to claim 1 of the present invention pulls out the binding tool wound around the winding tool, cuts it to a predetermined length, and binds the bag mouth with the binding tool. Based on the presence or absence of rotation of the wrapping tool detected by the detection means, the binding means is continued to pull out the binding tool, the detection means for detecting the presence or absence of rotation of the wrapping tool, or the binding tool And a control means for controlling the binding means so as to stop the drawing.

  According to the binding machine of the present invention, the binding means pulls out the binding tool wound around the winding tool, cuts it to a predetermined length, and binds the bag mouth with the binding tool. A detection means detects the presence or absence of rotation in a winding tool. The control means controls the bundling means so as to continue pulling out the bundling tool or stop pulling out the bundling tool based on the detected rotation of the winding tool. For example, when the presence of rotation of the wrapping tool is not detected within a predetermined monitoring set time, the control means stops pulling out the binding tool. Thereby, when all the binding tools are pulled out from the winding tool, the pulling-out of the binding tools is stopped, so that it is possible to prevent the terminal portion of the binding tool from entering the inside of the binding machine.

  In order to solve the above-described problem, a control method for a binding machine according to claim 5 according to the present invention is such that the binding tool wound around the winding tool is pulled out and cut into a predetermined length, and the bag mouth is opened with the binding tool. A method of controlling a binding machine that binds the winding tool, the step of detecting the presence or absence of rotation of the winding tool, and continuing to pull out the binding tool based on the detected presence or absence of rotation of the winding tool, or And a step of stopping the drawer of the binding tool.

  In order to solve the above-described problem, the winding tool according to claim 7 according to the present invention pulls out the binding tool wound around the winding tool, cuts it to a predetermined length, and binds the bag mouth with the binding tool. A wrapping tool that can be attached to a binding machine, comprising: a rotating shaft; and a guide plate having a predetermined shape attached to both ends of the rotating shaft, wherein at least one of the guide plates is centered on the rotating shaft It is characterized in that a mark is provided on the circumference.

  According to the winding tool according to the present invention, the binding tool is pulled out and cut to a predetermined length, and can be attached to a binding machine that binds the bag mouth with the binding tool, and within a predetermined monitoring set time, A mark is detected according to the rotation of the winding tool. Thereby, the presence or absence of rotation of the winding tool can be detected.

  According to the binding machine and the control method thereof according to the present invention, the pulling-out of the binding tool is continued or the pull-out of the binding tool is stopped based on the detected rotation of the winding tool.

  With this configuration, it is possible to prevent the end portion of the binding tool from entering the inside of the binding machine, and it is possible to leave the end portion of the binding tool outside the binding machine.

  According to the winding tool according to the present invention, the binding tool is pulled out and cut to a predetermined length, and can be attached to a binding machine that binds the bag mouth with the binding tool, and at least one guide plate includes A mark is provided on the circumference around the rotation axis.

  With this configuration, the presence or absence of rotation of the winding tool can be detected by combining the mark and the predetermined sensor. Thereby, it becomes possible to stop pulling out the binding tool based on the detected rotation of the winding tool.

  Hereinafter, embodiments of a binding machine, a control method thereof, and a winding tool according to the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a configuration example of a binding machine 100 according to the present invention. The binding machine 100 shown in FIG. 1 is in a state in which a cover for protecting the internal mechanism of the binding machine 100 is removed. The binding machine 100 includes a binding mechanism 1, a reel 2, a tag feed mechanism 3, a support base 4, a sensor 7, and a control unit 40.

  The bundling mechanism 1 functions as an example of a bundling means, and is engaged with the support base 4 so as to be adjustable up and down. For example, the support base 4 includes a support bar 31, and the support bar 31 is attached perpendicularly to the support base 4. The support bar 31 includes a cylinder 31a and a bar member 31b, and the bar member 31b is inserted and fixed to the cylinder 31a so as to be movable up and down. The bundling mechanism 1 pulls out a twist tie (bundling tool) 14 wound around the reel 2 and cuts it to a predetermined length, and binds the bag mouth with the twist tie 14.

  The tag feed mechanism 3 is attached to one end side of the bundling mechanism 1 that faces the reel 2. The tag feeding mechanism 3 supplies a tag (not shown) to the binding port 15 of the binding mechanism 1.

  The reel 2 is fixed to the support base 4 so as to be rotatable about its axis. The support base 4 includes a reel support portion 5, and the reel support portion 5 is fixed to the support base 4. The reel 2 is attached to the reel support portion 5 so as to be axially rotatable. For example, the reel support portion 5 has a semicircular arc portion for supporting the rotation shaft 6 of the reel 2, and the rotation shaft 6 of the reel 2 is engaged with the semicircular arc portion. The circumference of the semicircular arc portion is designed to be slightly larger than the circumference of the rotating shaft 6 of the reel 2. Thus, when the twist tie 14 wound around the reel 2 is pulled out by the bundling mechanism 1, the reel 2 rotates while using the semicircular arc portion of the reel support portion 5.

  The reel 2 includes a rotating shaft 6 and circular reel outer plates (guide plates) 2 a and 2 b attached to both ends of the rotating shaft 6. At least one of the reel outer plates 2a is provided with through holes 8 constituting an example of a mark at equal intervals on a circumference around the rotation shaft 6.

  The sensor 7 is attached to the reel support portion 5 in the broken-line circle in the figure, and functions as an example of a detection means in cooperation with the through hole 8 arranged at a position corresponding to the sensor 7. The presence or absence of rotation in the reel 2 is detected by the sensor 7 and the through hole 8.

  The control unit 40 is attached to the reel support unit 5 and functions as an example of a control unit. The control unit 40 controls the bundling mechanism 1 so as to continue pulling out the twist tie 14 or stop pulling out the twist tie 14 based on the detected rotation of the reel 2. For example, if the presence of rotation of the reel 2 is not detected within a predetermined monitoring set time, the control unit 40 stops pulling out the twist tie 14.

  The sensor 7 functions as an example of a detection unit, detects the through hole 8, and outputs a detection signal to the control unit 40. The control unit 40 controls the withdrawal of the twist tie 14 based on this detection signal. For example, when the through hole 8 is not detected by the sensor 7 at a predetermined monitoring set time, the control unit 40 determines that the reel 2 has not been rotated, and controls the bundling mechanism 1 to stop pulling out the twist tie 14. To do. Thereby, it is possible to prevent the terminal portion of the twist tie 14 from entering the inside of the bundling mechanism 1. Therefore, the terminal portion of the twist tie 14 can remain outside the bundling mechanism 1.

  The sensor 7 is a transmissive photosensor having a structure in which both elements face each other so that light emitted from the light emitting element strikes the light receiving element. The sensor 7 captures the output current of the light receiving element that changes when the light emitted by the light emitting element passes through the through-hole 8 and is received by the light receiving element, and outputs it as a detection signal to the control unit 40.

  Subsequently, the function of the binding machine 100 will be described with reference to FIGS. 1 and 2. 2A to 2D are process diagrams illustrating an example of functions of the binding machine 100. The tag 10 shown in FIG. 2A is supplied to the bundling mechanism 1 by the tag feed mechanism 3. The tag 10 is disposed in the vicinity of the bag 13 in which the bag mouth is bundled. For example, the user bundles the bag mouth of the bag 13 and places the bag mouth in the binding mouth 15 of the binding mechanism 1. After the placement, the control unit 40 senses that the bag mouth is placed at the binding port 15 and requests the tag feeding mechanism 3 to send one tag 10 to the binding mechanism 1. In response to this request, the tag feed mechanism 3 supplies about one tag 10 to the bundling mechanism 1. The bundling mechanism 1 receives the tag 10 supplied by the tag feeding mechanism 3 and arranges it near the bag mouth. At this time, the arrangement position is adjusted with reference to the notches 12a and 12b of the tag 10. In this way, the tag 10 is arranged in the vicinity of the bag mouth.

  FIG. 2B is a diagram in which the twist tie 14 is inserted into the tag 10. For example, the bundling mechanism 1 pulls out the twist tie 14 wound around the reel 2 by about 80 mm, and inserts the tip of the twist tie 14 into the tag fixing hole 11 a of the tag 10.

  FIG. 2C is a diagram in which the shape of the twist tie 14 after being inserted into the tag 10 is regulated. For example, the binding mechanism 1 inserts the tip of the twist tie 14 into the tag fixing hole 11b after inserting the tip of the twist tie 14 into the tag fixing hole 11a. After the insertion, the bundling mechanism 1 cuts a predetermined position of the twist tie 14 and sets the total length of the twist tie 14 to about 80 mm. After cutting, the bundling mechanism 1 moves both ends of the twist tie 14 toward the bag 13 and restricts the shape of the twist tie 14 to a U shape.

  FIG. 2D is a diagram in which the tag 10 is fixed to the bag mouth of the bag 13 with a twist tie 14. For example, both ends of the twist tie 14 restricted to a U-shape are held by the S-shaped member 30b of the S-shaped twisted arm 30 shown in FIG. 2C, and a predetermined number of the rotation shaft 30a of the twisted arm 30 is screwed. Rotate. Thereby, the twist tie 14 is twisted and the tag 10 is fixed to the bag mouth of the bag 13 by the twist tie 14. In this way, the bag mouth of the bag 13 is automatically bound and the tag 10 is fixed.

  FIG. 3 is an enlarged view showing a mounting example of the sensor 7 in the broken-line circle shown in FIG. The sensor 7 shown in FIG. 3 is attached to the reel support 5 such that the light emitting element and the light receiving element of the sensor 7 sandwich the reel outer plate 2a. Further, when the light emitting element and the light receiving element of the sensor 7 are connected by a straight line, the sensor 7 is attached so that the straight line passes through the through hole 8 of the reel outer plate 2a.

  The sensor 7 includes a reaction output terminal 9. A line is drawn from the reaction output terminal 9, and this line is connected to the control unit 40. Thereby, the sensor 7 can capture the output current of the light receiving element that changes when the light emitted by the light emitting element passes through the through-hole 8 and is received by the light receiving element, and can output it to the control unit 40 as a detection signal. It becomes like this.

  4A and 4B are explanatory diagrams showing a configuration example of the reel 2. The reel 2 shown in FIG. 4A is a perspective view in a state where the twist tie 14 is not wound. The reel outer plates 2a and 2b are manufactured using the same mold by a resin injection molding machine. For this reason, the reel outer plate 2a and the reel outer plate 2b have the same shape, and each of these outer plates is provided with eight through holes 8 each. Since the result is the same regardless of which of the through holes 8 of the reel outer plates 2a and 2b is detected, in this example, the through hole 8 of the reel outer plate 2a is detected. The radius of the reel 2 is about 100 mm, and a twist tie 14 of about 1000 m is wound around the reel 2.

  The rotation shaft 6 of the reel 2 is provided with a hook portion (not shown), and the tip portion of the twist tie 14 is hooked on the hook portion, and the twist tie 14 is wound around the reel 2. When the twist tie 14 wound around the reel 2 is completely consumed, the tip end is pulled by the pulling force of the twist tie 14 by the bundling mechanism 1 by being hooked by the hooking portion. Thereby, an excessive load is not applied to the bundling mechanism 1 and the reel 2.

The reel 2 shown in FIG. 4B is a front view, and the circumference P of the reel outer plate 2a is equally divided into eight by a one-dot chain line around the rotating shaft 6, and the angle θ of one section is set to 45 °. This angle θ is R when the radius of the reel 2 is R, the pull-out amount of the twist tie 14 is L, the angle formed by two adjacent through holes 8 is θ, and the circumference is π.
360 ° × [L / (2 × π × R)]> θ (1)
The angle θ is set so as to satisfy In this example, when the radius R of the reel 2 is set to 100 mm and the withdrawal amount L is set to 80 mm, when these values are applied to the expression (1), the left side of the expression (1) is 45.9 °. Accordingly, when the twist tie 14 is used for one time, the reel 2 rotates at least 45.9 °, so that the through hole 8 can be detected at least once if the angle θ is set to 45.9 ° or less.

  That is, when the radius of the twist tie 14 wound around the reel 2 is substantially equal to the radius R of the reel 2, in other words, when the twist tie 14 is first used, the amount of rotation of the reel 2 is 45.9 °. It will be about. The through holes 8 are arranged at a pitch at which the rotation of the reel 2 can be detected under these conditions. As the twist tie 14 is pulled out and used, the radius of the twist tie 14 wound around the reel 2 becomes smaller than the radius of the reel 2, so that the twist tie 14 can be used for one use. Thus, the reel 2 tends to rotate more. Further, it is not normally considered that the twist tie 14 is wound around the reel 2 until it protrudes from the reel outer plate 2a.

  A through-hole 8 is arranged at the intersection of the dashed line and the circumference P. Thereby, when the twist tie 14 is pulled out from the reel 2 and the reel 2 is rotated, the through hole 8 of the reel 2 passes through the sensor 7 at least once.

  As described above, according to the reel 2 according to the present invention, the twist tie 14 can be pulled out and cut, and the twist tie 14 can be attached to the binding machine 100 that binds the bag mouth. The plate 2a is provided with through-holes 8 at equal intervals on the circumference around the rotation shaft 6.

  Therefore, by combining the through hole 8 and the sensor 7, it is possible to detect the presence or absence of rotation of the reel 2. Thereby, the drawing of the twist tie 14 can be stopped based on the detected rotation of the reel 2.

  FIG. 5 is a configuration diagram of the upper surface illustrating an operation example (part 1) of the bundling mechanism 1. The bundling mechanism 1 shown in FIG. 5 shows the internal structure of the bundling mechanism 1 shown in FIG. 1 and is in a state before the bag mouth of the bag 13 is bound. The bundling mechanism 1 has the functions shown in FIGS. That is, the bundling mechanism 1 has a function of fixing the tag 10 to the bag mouth of the bag 13 with the twist tie 14. In order to realize this function, the bundling mechanism 1 includes a first operation plate 20, a second operation plate 21, a curl guide 22, a feed roller 23, a feed groove 24, a first link 25, and a second link 26. , A third link 27, a cutter 28, shift arms 29 a and 29 b, a torsion arm 30 and a connecting rod 31. Although not shown, the bundling mechanism 1 includes a plurality of gears, cams, and the like, and transmits the power of the motor 48 to the operation plates 20 and 21 using a plurality of gears, cams, and the like. The bundling mechanism 1 is driven by a single motor 48.

  The operation plate 20 has a roller at one end of the operation plate 20, and has a long hole 20 a at the center of the operation plate 20. The roller of the action | operation board 20 is couple | bonded with the cam groove with which the gearwheel which is not shown in figure was equipped. A restriction bolt 20b or the like is attached to the long hole 20a of the operation plate 20, and the operation plate 20 is coupled to the main body of the bundling mechanism 1 so as to be movable in the longitudinal direction of the long hole 20a. One end of a link 27 is rotatably coupled to the other end of the working plate 20. A curl guide 22 is coupled to the other end of the link 27. A tag 10 is attached to the curl guide 22.

  The link 27 has a torque limiter function. For example, the link 27 is composed of two sets of members and springs that can rotate about the shaft, and the shafts of the two sets of members are stopped by spring force or frictional force. For example, when an excessive driving torque from the operation plate 20 is applied, the two sets of members move in the facing direction. As a result, excessive driving torque escapes, so that the gears and cams that are the driving mechanism can be prevented from being damaged.

  Like the operation plate 20 described above, the operation plate 21 has a roller at one end of the operation plate 21, and has a long hole 21 a at the center of the operation plate 21. The roller of the working plate 21 is coupled to a cam groove provided in a gear (not shown). A restriction bolt 21b or the like is attached to the long hole 21a of the operation plate 21, and the operation plate 21 is coupled to the main body of the bundling mechanism 1 so as to be movable in the longitudinal direction of the long hole 21a.

  One end of a scissor-like link 25 is rotatably coupled to the other end of the operating plate 21. A link 26 is coupled to one end of the scissors-like link 25 so as to be rotatable. The shape of the link 26 is substantially D-shaped, and the link 26 has a concave portion 26a in a substantially D-shaped arc portion. A roller 28a of the cutter 28 is disposed corresponding to the recess 26a. The roller 28a of the cutter 28 is coupled to the link 26 via a spring 28b and is pulled in a certain direction. Further, a close arm 29 a is fixed to the link 26.

  A connecting rod 31 is coupled to the other end of the scissors-like link 25 so as to be rotatable about the shaft, and a moving arm 29 b is fixed to the connecting rod 31. In this state, the two shifting arms 29 a and 29 b constitute a part of the feed path of the twist tie 14.

  In addition, a torsion arm 30 is provided in the vicinity of a portion located on the other end side of the operating plate 21 so as to be rotatable. An S-shaped S-shaped member 30b is attached to the tip of the rotating shaft 30a of the torsion arm 30, and the S-shaped member 30b is rotated in a screw shape by the rotating shaft 30a of the torsion arm 30. In this way, the bundling mechanism 1 is configured, and the tag 10 is fixed to the bag mouth of the bag 13 by the twist tie 14.

  Next, the bundling mechanism 1 in a state where the twist tie 14 is pulled out by 80 mm will be described. FIG. 6 is a configuration diagram of the upper surface showing an operation example (No. 2) of the bundling mechanism 1. The bundling mechanism 1 shown in FIG. 6 is in a state where the twist tie 14 is pulled out 80 mm from the state shown in FIG.

  In this example, the binding mechanism 1 senses that the bag mouth of the bag 13 has been pushed into the binding mouth 15 and rotates the motor 48 and the gears shown in FIG. At this time, the roller of the working plate 20 coupled to the cam groove provided in the rotated gear moves according to the shape of the cam groove. The operation plate 20 moves in the longitudinal direction (arrow P direction) of the long hole 20a in the operation plate 20 with the movement of the roller.

  The operating plate 20 moves in the arrow P direction, and the curl guide 22 coupled via the link 27 moves in the arrow Q direction, which is the opposite direction of the arrow P direction. For example, when the size of the bag mouth of the bag 13 pushed into the binding port 15 is too large and the bag 13 protrudes from the binding port 15, the curled guide 22 cannot be moved to a fixed position by the protruding bag 13. At this time, an excessive driving torque applied to the operation plate 20 and the like can be released due to the torque limiter function provided in the link 27 acting.

  After the curl guide 22 moves in the arrow Q direction, the curl guide 22 constitutes a part of the feed path of the twist tie 14. Subsequently, the feed roller 23 rotates in the direction of the arrow V, and the twist tie 14 is fed to the stop position R at the tip end portion in the drawing through the feed groove 24, the one approach arm 29a, the curl guide 22, and the other approach arm 29b. It is. In this example, the delivery amount is 80 mm. In this way, the twist tie 14 is delivered 80 mm.

  Next, the bundling mechanism 1 in a state where the sent twist tie 14 is bound to the bag 13 will be described. FIG. 7 is a configuration diagram of the upper surface showing an operation example (No. 3) of the bundling mechanism 1. 7 is a state in which the twist tie 14 is bound to the bag 13 from the state shown in FIG.

  In this example, after the twist tie 14 is delivered to the stop position R shown in FIG. 6, the bundling mechanism 1 moves the operating plate 21 in the direction of the arrow Q. For example, in the same manner as the operation plate 20, the roller of the operation plate 21 coupled to the cam groove provided in the gear moves the operation plate 21 according to the shape of the cam groove. As the roller moves, the operating plate 21 moves in the longitudinal direction (arrow Q direction) of the long hole 21a in the operating plate 21.

  As the operating plate 21 moves in the direction of arrow Q, the link 26 coupled to one other end of the scissors-like link 25 pushes the roller 28a of the cutter 28 by the crest of the recess 26a of the link 26. As a result, the blade of the cutter 28 is moved in a certain direction to cut the twist tie 14. Further, the leading end of the approach arm 29 a fixed to the link 26 is moved in the direction of the torsion arm 30. At the same time, the leading end of the approach arm 29b fixed to the connecting rod 31 coupled to the other other end of the scissors-like link 25 is also moved in the direction of the torsion arm 30. At this time, the leading ends of the two shifting arms 29 a and 29 b are moved toward the torsion arm 30 while holding the end portions of the twist tie 14. After the movement, each end of the twist tie 14 is attached to the S-shaped member 30 b of the torsion arm 30. The rotating shaft 30a of the torsion arm 30 is rotated in the shape of a screw in a state where each end of the twist tie 14 is mounted. Thereby, twist tie 14 is twisted and the bag mouth of bag 13 is bound.

  FIG. 8 is a block diagram illustrating a configuration example of a control system of the binding machine 100. A binding machine 100 illustrated in FIG. 8 includes a sensor 7, a control unit 40, a signal processing unit 46, a motor driving unit 47, a motor 48, and an LED 49. The sensor 7, the control unit 40, and the motor 48 are the same as those shown in FIG.

  The signal processing unit 46 is connected to the sensor 7, receives the detection signal S <b> 1 from the sensor 7, and outputs the detection data D <b> 1 to the control unit 40. For example, the detection signal S1 is an output current from the sensor 7. In this example, when the sensor 7 detects the through-hole 8 of the reel 2, the output current becomes larger than a predetermined value. The signal processing unit 46 binarizes (digitalizes) the detection signal S1 and outputs 3-bit detection data D1 to the control unit 40.

  The control unit 40 is connected to the signal processing unit 46 and includes a CPU 41, a RAM 42, an EEPROM 43, an I / O port 44, and a system bus 45. An EEPROM (Electronically Erasable and Programmable Read Only Memory) 43 is connected to a CPU (Central Processing Unit) 41 via a system bus 45. The EEPROM 43 stores a control program for the binding machine 100 and the like. In this control program, a reference value serving as a reference for the presence or absence of rotation of the reel 2 is set. This reference value is compared with detection data D1 created based on the output current from the sensor 7.

  A RAM (Random Access Memory) 42 is connected to the CPU 41 via a system bus 45. When the power of the binding machine 100 is activated, a control program is developed in the RAM 42 by the CPU 41.

  The CPU 41 is connected to the EEPROM 43 and the RAM 42, reads the control program stored in the EEPROM 43, and develops it in the RAM 42. The CPU 41 is connected to a signal processing unit 46 and a motor driving unit 47 via an I / O (Input / Output) port 44. The CPU 41 is connected to an LED (Light Emitting Diode) 49. The CPU 41 inputs the detection data D1 from the signal processing unit 46, controls the lighting of the LED 49, and drives and controls the motor driving unit 47.

  In this example, the sensor 7 detects the presence or absence of rotation in the reel 2 within a predetermined monitoring set time, and outputs a detection signal S1 to the CPU 41 via the signal processing unit 46. The CPU 41 compares the detection data D1 obtained by converting the detection signal S1 with the above-described reference value. As a result of the comparison, if the CPU 41 determines that the detection data D1 does not satisfy the reference value, the CPU 41 stops pulling out the twist tie 14.

  For example, if the detection data D1 is larger than the above-described reference value, the CPU 41 determines that the sensor 7 has detected the through hole 8 of the reel 2 and continues to pull out the twist tie 14. If the detection data D1 is smaller than the reference value, the CPU 41 determines that the sensor 7 has not detected the through-hole 8 of the reel 2 and outputs LED control data D3 for lighting to the LED 49 and motor control for stopping. Data D2 is output to the motor drive unit 47.

  The motor drive unit 47 is connected to the I / O port 44 and the motor 48, receives motor control data D2 from the CPU 41 via the I / O port 44, and creates a motor control signal S2 based on the motor control data D2. The motor control signal S2 is output to the motor 48. For example, the motor control signal S2 stops the motor 48.

  The motor 48 is connected to the motor drive unit 47, receives the motor control signal S2, and rotates based on the motor control signal S2. For example, in the case of the stop motor control signal S2, the motor 48 stops rotating.

  The LED 49 is connected to the CPU 41, receives LED control data D3 from the CPU 41, and lights up based on the LED control data D3. For example, in the case of LED control data D3 for lighting, the LED 49 is lit.

  As a result, the motor 48 stops and the LED 49 lights up in red, for example. Therefore, when the bundling mechanism 1 is stopped when the LED 49 is lit in red, the user can know that the twist tie 14 has disappeared. Thereby, it is possible to prevent the terminal portion of the twist tie 14 from entering between the feed roller 23 and the cutter 28 of the bundling mechanism 1. Therefore, the terminal portion of the twist tie 14 can remain outside the bundling mechanism 1.

  When the motor 48 is temporarily stopped, the CPU 41 performs control so that the motor 48 is stopped and the LED 49 is turned off when the main power of the binding machine 100 (not shown) is turned off or the reset button is pressed. . After the release, the binding machine 100 is in a normal operation. That is, when the user pushes the bag 13 into the binding port 15 of the binding machine 100, the CPU 41 drives the motor driving unit 47 to start the binding process.

  Next, an operation example of the binding machine 100 that binds the bag mouth of the bag 13 with the twist tie 14 will be described. FIG. 9 is a flowchart illustrating an operation example of the binding machine 100. The use length of one twist tie 14 is 80 mm. It is assumed that the reel 2 is wound about 800 mm, which corresponds to the amount consumed by the twisting tie 14 for 10 times of bundling operation.

  Under these conditions for binding the bag mouth, in step T1 shown in FIG. 9, the CPU 41 determines whether or not the bag mouth of the bag 13 has been pushed into the binding mouth 15 shown in FIG. If it is determined that the bag mouth has not been pushed in, it is determined again whether the bag mouth has been pushed in. If it is determined that it has been pushed, the process proceeds to step T2.

  In step T <b> 2, the CPU 41 controls the tag feeding mechanism 3 to send the tag 10 to the bundling mechanism 1. For example, the CPU 41 outputs a control signal requesting to send one tag 10 to the tag sending mechanism 3. The tag feed mechanism 3 receives the tag request control signal, sends about one tag 10 to the bundling mechanism 1, and proceeds to step T3.

  In step T <b> 3, the CPU 41 controls the bundling mechanism 1 so as to pull out the twist tie 14 from the reel 2. For example, the CPU 41 outputs a drive signal to the motor drive unit 47 of the bundling mechanism 1. The motor drive unit 47 rotates the motor 48 based on this drive signal. When the motor 48 is rotated, the operation plate 20 shown in FIG. 6 moves in the direction of arrow P, and the curl guide 22 coupled to the operation plate 20 via the link 27 moves in the direction of arrow Q. After the curl guide 22 moves in the arrow Q direction, the curl guide 22 constitutes a part of the feed path of the twist tie 14. Subsequently, the feed roller 23 is rotated, and the twist tie 14 is fed to the stop position R (see FIG. 6) of the front end portion through the feed groove 24, the one approach arm 29a, the curl guide 22, and the other approach arm 29b. . In this example, the feed amount is 80 mm. In this way, the twist tie 14 is pulled out from the reel 2. Subsequently, the process proceeds to step T4.

  In step T4, the CPU 41 detects the presence or absence of rotation of the reel 2 within a predetermined monitoring set time. For example, the monitoring setting time is, for example, 3 seconds from the binding start time. This binding start time is the time at the moment when it is sensed that the bag mouth of the bag 13 is pushed into the binding mouth 15. The CPU 41 compares the detection data D1 created based on the output current of the sensor 7 with the reference value for 3 seconds from the bundling start time, and if the comparison result shows that the detection data D1 is larger than the reference value, the sensor 7 It is determined that the through hole 8 is detected. That is, it is determined that the reel 2 has rotated, and the process proceeds to step T5.

  In step T <b> 5, the CPU 41 controls to cut the twist tie 14. For example, the CPU 41 outputs a drive signal to the motor drive unit 47 of the bundling mechanism 1. The motor drive unit 47 rotates the motor 48 based on this drive signal. When the motor 48 is rotated, the operating plate 21 moves in the direction of the arrow Q, and the link 26 coupled to one other end of the scissors-like link 25 is cut by the crest 28 of the recess 26 a of the link 26. The roller 28a is pushed. Thereby, the blade of the cutter 28 is moved in a certain direction, the twist tie 14 is cut, and the process proceeds to step T6.

  In step T6, the CPU 41 controls to twist the twist tie 14 to the bag mouth. For example, when the motor 48 is rotated, the leading end of the moving arm 29a fixed to the link 26 is moved in the direction of the torsion arm 30, and at the same time, the connecting rod coupled to the other end of the scissor-like link 25. The leading end of the approach arm 29 b fixed to 31 is also moved in the direction of the torsion arm 30. At this time, the leading ends of the two shifting arms 29 a and 29 b are moved toward the torsion arm 30 while holding the end portions of the twist tie 14. After the movement, each end of the twist tie 14 is attached to the S-shaped member 30 b of the torsion arm 30. The rotating shaft 30a of the torsion arm 30 is rotated in the shape of a screw in a state where each end of the twist tie 14 is mounted. As a result, the twist tie 14 is twisted to bind the bag mouth of the bag 13 and the tag 10 is fixed.

  In step T4, the CPU 41 compares the detection data D1 and the reference value for 3 seconds from the binding start time, and if the comparison result shows that the detection data D1 is smaller than the reference value, the sensor 7 detects the through hole 8 of the reel 2. Judge that it did not. That is, it is determined that the reel 2 has not been rotated. In this example, when the binding machine 100 is used for the eleventh time, the above-mentioned 800 mm is used up, so that the tip of the twist tie 14 hooked on the hook of the reel 2 comes off and the reel 2 does not rotate. Subsequently, the process proceeds to step T7.

  In step T7, the CPU 41 turns on the LED 49 because the reel 2 has been identified as being in a non-rotating state after 3 seconds from the binding start time. For example, the LED control data D3 for lighting is output to the LED 49. The LED 49 receives the LED control data D3, lights up in red, for example, and proceeds to step T8.

  In step T8, the CPU 41 stops the motor 48 and stops pulling out the twist tie 14. For example, the CPU 41 outputs stop motor control data D2 to the motor drive unit 47. The motor drive unit 47 creates a stop motor control signal S2 based on the motor control data D2, and outputs the motor control signal S2 to the motor 48. The motor 48 receives the motor control signal S2, stops rotating based on the motor control signal S2, and ends the bundling process.

  When the main power supply of the binding machine 100 (not shown) is turned on or the reset button is pressed, the CPU 41 controls to stop the motor 48 and turn off the LED 49. For example, when the LED 49 is lit and the binding machine 100 is stopped, the user temporarily turns off the power, removes the empty reel 2 from the reel support 5, and attaches a new reel 2 to the reel support 5. After the attachment, the user turns on the power and delivers the tip of the new reel 2 twist tie 14 to the bundling mechanism 1. As a result, the bundling work can be started.

  Thus, according to the binding machine 100 and the control method thereof according to the present invention, the pull-out of the twist tie 14 is continued or the pull-out of the twist tie 14 is stopped based on the detected rotation of the reel 2. is there.

  Accordingly, it is possible to prevent the end portion of the twist tie 14 from entering the inside of the binding machine 100 and to leave the end portion of the twist tie 14 outside the binding machine 100.

  In this embodiment, the case where the presence or absence of rotation of the reel 2 is detected using the through-hole 8 and the photosensor is shown, but the present invention is not limited to this, and a magnet and a magnetic sensor may be used. In this case, a magnet is attached to the position of the through hole 8 of the reel 2, and a magnetic sensor is attached instead of the photosensor. In the case of a magnet, the attachment position of the magnet can be changed, so that the interval for detecting the rotation of the reel 2 can be changed. Further, the mark is not limited to the through-hole 8 and may be anything that can be detected by the sensor 7 such as a notch. Moreover, although the case where LED49 was used as a warning means was demonstrated, not only this but using an alarm buzzer etc. can also be considered.

  In addition, the twist tie has been described as a binding tool, but the present invention is not limited to a twist tie in which a core wire member such as a wire is provided with a belt-like coating, but when a covered wire having a substantially circular cross section is used as a binding tool However, the present invention is applicable. Further, the present invention can also be applied to a case in which a wire that is not coated, a coated wire having a resin core wire, a linear member or a band-shaped member made of resin, and the like are used as a binding tool.

  The present invention is suitable for application to a twist tie binding machine that binds a bag mouth with a binding tool such as a covered wire or a twist tie wound around a winding tool.

It is a perspective view which shows the structural example of the binding machine 100 which concerns on this invention. A to D are process diagrams illustrating an example of functions of the binding machine 100. It is an enlarged view which shows the example of attachment of the sensor 7 in the broken-line circle | round | yen shown in FIG. A and B are explanatory views showing a configuration example of the reel 2. It is a block diagram of the upper surface which shows the operation example (the 1) of the bundling mechanism. It is a block diagram of the upper surface which shows the operation example (the 2) of the bundling mechanism. It is a block diagram of the upper surface which shows the operation example (the 3) of the bundling mechanism. It is a block diagram which shows the structural example of the control system of the binding machine. 5 is a flowchart illustrating an operation example of the binding machine 100.

Explanation of symbols

1 Bundling mechanism 2 Reel (winding tool)
2a, 2b Reel outer plate (guide plate)
6 Rotating shaft 7 Sensor (detector)
8 Through hole (mark)
13 Bag 14 Twist Tie (Binder)
40 Control unit (control unit)
41 CPU
100 binding machine

Claims (8)

A binding means for pulling out the binding tool wound around the winding tool, cutting it to a predetermined length, and binding the bag mouth with the binding tool;
Detecting means for detecting presence or absence of rotation in the winding tool;
Control means for controlling the binding means so as to continue pulling out of the binding tool or to stop pulling out of the binding tool based on the presence or absence of rotation of the winding tool detected by the detection means. Bundling machine that features. The control means includes
2. The binding machine according to claim 1, wherein when the rotation of the winding tool is not detected within a predetermined monitoring set time, the binding tool is stopped from being pulled out. The detection means includes
On the circumference around the rotation axis of the winding tool, a mark provided on the winding tool,
A detection unit for detecting the mark,
The detector is
Detecting the mark and outputting a detection signal to the control means;
The control means includes
2. The binding machine according to claim 1, wherein the binding unit is controlled to stop pulling out the binding tool based on the detection signal. When the radius of the wrapping tool is R, the pull-out amount of the binding tool is L, the angle formed by two adjacent marks is θ, and the circumference is π,
360 ° × [L / (2 × π × R)]> θ
The binding machine according to claim 3, wherein the angle θ is set so as to satisfy. A method of controlling a binding machine that pulls out a binding tool wound around a winding tool, cuts it to a predetermined length, and binds the bag mouth with the binding tool,
Detecting the presence or absence of rotation in the winding tool;
A control method for a binding machine, comprising the step of continuing to pull out the binding tool or stopping the pulling-out of the binding tool based on the detected presence or absence of rotation of the winding tool. Detecting the presence or absence of rotation in the wrapping tool within a predetermined monitoring set time and outputting a detection signal;
The output detection signal is compared with a reference value which is a reference for the presence or absence of rotation,
6. The method of controlling a binding machine according to claim 5, wherein, as a result of the comparison, if it is determined that the detection signal does not satisfy the reference value, drawing of the binding tool is stopped. A winding tool that can be attached to a binding machine that pulls out the binding tool wound around the winding tool, cuts it to a predetermined length, and binds the bag mouth with the binding tool,
A rotation axis;
A predetermined-shaped guide plate attached to both ends of the rotating shaft,
At least one of the guide plates includes
A winding tool, wherein a mark is provided on a circumference around the rotation axis. When the radius of the wrapping tool is R, the pull-out amount of the binding tool is L, the angle formed by two adjacent marks is θ, and the circumference is π,
360 ° × [L / (2 × π × R)]> θ
The winding tool according to claim 7, wherein the angle θ is set so as to satisfy the following condition.

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