JP2016078901A - Binding band cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a binding band cutting device capable of preventing cutting failure of a binding band, even when binding of the binding band is loosened.SOLUTION: A binding band cutting device comprises a gripping cutting device 3 constituted so as to grip and cut a binding band wound on an outer peripheral surface of a coil C, and the gripping cutting device 3 comprises a pair of gripping parts 31a and 32a for gripping the binding band, a hydraulic cylinder 3A for approaching the pair of gripping parts 31a and 32a and an air pressure cylinder 3C for moving in the winding shaft direction of a coil C, a cutting blade 33 for cutting the binding band, a band detection sensor 61 and control means for cutting the binding band by the cutting blade 33 thereafter, by controlling the hydraulic cylinder 3A and the air pressure cylinder 3C so as to grip the binding band, by approaching the pair of gripping parts 31a and 32a, by stopping the movement when the band detection sensor 61 detects the binding band, after starting the movement in the winding shaft direction of the coil C of the pair of gripping parts 31a and 32a.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a binding band cutting device that automatically cuts a binding band obtained by binding a thin plate wound in a coil shape (simply referred to as “coil” in the present specification and claims).

  A thin plate, for example, a thin steel plate, is bundled by winding its outer peripheral surface with a binding band in a state (form) in which a long one is wound in a coil shape for easy handling during storage and transportation.

  An apparatus for automatically cutting such a binding band is disclosed in Patent Documents 1 and 2, for example. For example, Patent Document 1 describes an apparatus configured to hold a binding band with a pair of claws, float it from the surface (outer peripheral surface) of the coil, and cut it with a cutting blade.

JP 2010-1061 A JP-A-62-235036

  However, a coil that is bound with a binding band often loosens the binding band during handling such as transportation, and if the binding is loose, the coil must be gripped accurately. May not be cut, resulting in poor cutting.

  In addition, Patent Document 2 has a description that it is effective to provide a band presser or the like in order to prevent the band from escaping, but does not describe any specific configuration thereof.

  The present invention has been made to solve the above-described problems, and provides a binding band cutting device that can prevent a cutting failure of a binding band even when the binding of the binding band is loose. It is aimed.

  In order to achieve the above object, a binding band cutting device according to an aspect of the present invention is configured to be capable of contacting and separating from an outer peripheral surface of a coil formed by winding a thin plate, and the outer peripheral surface of the coil. A band gripping and cutting means configured to grip a binding band that is wound around the outer peripheral surface of the coil and binds the coil in a state of being in contact with the coil, and to cut the gripped binding band; The gripping and cutting means includes a pair of gripping portions for gripping the binding band by approaching from a state where they are separated from each other by a predetermined distance in the winding axis direction of the coil while being in contact with the outer peripheral surface of the coil. The pair of gripping portions are moved in the direction of the winding axis of the coil while being in contact with the outer peripheral surface of the coil and the first driving means for bringing the pair of gripping portions closer to each other from the state separated by the predetermined distance The A second driving means, a cutting means for cutting the binding band, and the pair of gripping parts being moved by the second driving means at a predetermined position between the pair of gripping parts. A band detection means for detecting the binding band when a band is present, and a winding axis direction of the coil of the pair of gripping portions by the second driving means in a state where the pair of gripping portions are separated by the predetermined distance The movement of the pair of gripping portions by the second driving unit is stopped when the band detecting unit detects the binding band, and the pair of the pair of gripping units is stopped by the first driving unit. Control means for controlling the first and second driving means to grip the binding band by approaching a gripping portion, and then controlling the cutting means to cut the binding band.

  According to this configuration, when the binding band is gripped and cut by the band gripping and cutting means, the second driving means starts the lateral feed operation (movement of the coil in the winding axis direction) of the pair of gripping portions. After that, when the band detecting means detects the binding band, the lateral feeding operation is stopped, and the first driving means performs the approaching operation of the pair of gripping portions so as to grip the binding band. Therefore, even when the binding band is loose, the binding band can be satisfactorily gripped and cut without being moved by the lateral feed operation, and cutting failure of the binding band can be prevented.

  Of the pair of gripping portions, the gripping portion on the rear side in the moving direction in the movement by the second driving means has a stepped portion that is caught by the binding band during the movement, and the band detecting means is The binding band is arranged to move together with the gripping portion having the stepped portion so as to detect the binding band at the time when the binding band comes into contact with the stepped portion during the movement of the pair of gripping portions or immediately before contact. It may be.

  According to this configuration, since the band detecting means moves together with the grip portion having the step portion, it becomes easy to detect the binding band when the binding band comes into contact with the step portion or immediately before the contact.

  In addition, in the state where the band gripping and cutting means is in contact with the outer peripheral surface of the coil, it has a rod-shaped member extending in the winding axis direction of the coil, and the rod-shaped member places the binding band on the outer peripheral surface of the coil. You may further provide the band press means biased so that it may press.

  According to this configuration, when the binding band is gripped and cut by the band gripping and cutting means, the binding band is pressed against the outer peripheral surface of the coil by the rod-like member of the band pressing means. Regardless of the binding condition), the band detection means can accurately detect the binding band, make the binding band stationary, and better grip and cut the binding band, thereby further preventing the binding band from being cut badly. Can do.

  The bar-shaped member of the band pressing means is biased by a spring, and the band pressing means is attached to the band gripping cutting means, and the band gripping cutting means abuts on the outer peripheral surface of the coil. The rod-shaped member is configured to come into contact with and separate from the outer peripheral surface of the coil as it moves away from the coil, and when the band gripping and cutting means is in contact with the outer peripheral surface of the coil, The member may be biased so as to be pressed against the outer peripheral surface of the coil.

  According to this configuration, the band pressing means can be made simple and there is no need to control the band pressing means.

  The band pressing means may be provided with two rod-shaped members, and the two rod-shaped members may be arranged so as to face each other across a range in which a gap between the pair of gripping portions moves. Good.

  According to this configuration, the binding band is pressed against the outer peripheral surface of the coil by the two rod-shaped members arranged so as to face each other across the range in which the gap between the pair of gripping parts moves. Even when the band is loose, the binding band is firmly fixed, and the band gripping and cutting means can grip and cut the binding band better, thereby further preventing the cutting failure of the binding band.

  The present invention has the above-described configuration, and in the binding band cutting device, even when the binding band is loose, the binding band can be prevented from being cut badly.

It is a side view which shows the structure of the whole schematic of the binding band cutting device of embodiment of this invention. In the binding band cutting device of the embodiment of the present invention, it is an enlarged view showing a state in which the binding band held by the gripping cutting device is pushed up to the winding device side by the lifting device. (A) is a front view of the gripping and cutting device viewed from the coil side when the gripping and cutting device is in contact with the coil in FIG. 1, and (b) is an X- It is the partial perspective view which looked at the arrow with X-ray, (c) is the schematic which looked at the arrow at the YY line in Fig.3 (a). (A) is the enlarged view which looked at the XX line in FIG. 3 (a), (b) is the figure which extracted a part from FIG. 4 (a). (A), (b) is a figure which shows the attachment and removal method of a presser bar. (A) is a figure which shows a pair of holding | grip block and bundling band just before the start of the band holding | grip operation | movement of a holding | grip cutting device, (b) is a front view of the holding | grip cutting device at that time. (A) is a figure which shows a pair of holding | grip block and bundling band in the band holding | grip operation | movement of a holding | grip cutting device, (b) is a front view of the holding | grip cutting device at that time. (A) is a figure which shows a pair of holding | grip block and binding band at the time of completion | finish of band holding operation | movement of a holding | grip cutting device, (b) is a front view of the holding | grip cutting device at that time, (c) is a figure. It is an enlarged view of 8 (a). It is a block diagram which shows the outline of the control system of the binding band cutting device of this embodiment. It is a flowchart which shows an example of operation | movement of the binding band cutting device of this embodiment.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference symbols throughout all the drawings, and redundant description thereof is omitted. Further, the present invention is not limited to the following embodiment.

(Embodiment)
FIG. 1 is a side view showing an overall schematic configuration of a binding band cutting device according to an embodiment of the present invention, and FIG. 2 is a drawing device that winds a binding band held by a gripping cutting device with a lifting device. It is an enlarged view which shows the state pushed up to the side. For convenience, as shown in FIG. 1, in the binding band cutting device, “front” and “rear” are determined and described.

  The coil C bound by the binding band B is transported by a transport device (such as an overhead crane device) (not shown) and placed on the coil receiving portion 81 provided in front of the binding band cutting device of the present embodiment. . Note that a coil support roller may be provided instead of the coil receiving portion 81.

  The binding band cutting device of the present embodiment is disposed at a main body frame 1, a swing post 2 that is swingable with respect to the main body frame 1, and a tip of the swing post 2. A gripping / cutting device (band gripping / cutting means) 3, a band presser device (band presser means) 40 </ b> A (FIG. 3) attached to the gripping / cutting device 3, and a winding device 4 for winding the cut binding band B in a coil shape. A lifting device 5 that pushes up the binding band B cut to the winding device 4 side, a discharge device 7 that discharges the binding band B wound in a coil shape by the winding device 4 backward, and the main body frame 1. 4, four fixing posts 6 for attaching the winding device 4, the lifting device 5, the discharge device 7, and the like, and a control device (control means) 8 that controls the operation of each actuator. The four fixed posts 6 are composed of two left and right fixed posts 6a on the front side and two fixed posts 6b on the left and right sides, and a bar or the like is appropriately provided between the posts.

  The swing post 2 is configured to be swingable with respect to the main body frame 1 by a predetermined angle range (α) by the expansion and contraction operation of the hydraulic cylinder 2A around the pivot shaft 2a. The hydraulic cylinder 2A is swingably attached about a shaft 2m. The swingable angle range α of the swing post 2 is set in the control device 8 in accordance with each dimension of the minimum diameter to the maximum diameter of the processable coil C. The main body frame 1 is configured to be rotatable, for example, like a rotary table. However, since the main body frame 1 is not directly related to the present invention, the main body frame 1 is described as being fixed in the state shown in FIG. To do.

  In addition, the gripping / cutting device 3 swings forward from the position (origin position) indicated by a solid line in FIG. 1, and the gripping / cutting device 3 is placed on the outer peripheral surface of the coil C as indicated by a two-dot chain line. It is configured to be able to grip and cut the binding band B wound around the coil C when in contact. After cutting the binding band B, the gripping / cutting device 3 returns to the original position by swinging the swing post 2 backward while gripping one end of the cut binding band B. The state at this time is shown by a solid line in FIG. The details of the gripping and cutting device 3 will be described later.

  The lifting device 5 is attached to both ends of a substantially U-shaped frame 5f, a substantially U-shaped bracket 5g attached to the tip of the frame 5f, and a front view ( 1), a substantially V-shaped push-up bracket 5a, 5b, an arm 5v having one end connected to the base end of the frame 5f via a pivot shaft 5m, and the other end of the arm 5v. And a pneumatic cylinder 5A. Here, the frame 5f is configured to be swingable about the pivot shaft 5m by the pneumatic cylinder 5A via the arm 5v. The pneumatic cylinder 5A is attached so as to be swingable about the shaft 5n. When the pneumatic cylinder 5A contracts from the extended state shown in FIG. 1, the push-up brackets 5a and 5b swing from the standby position (position shown in FIG. 1) by a predetermined angle around the pivot shaft 5m. Then, the binding band B cut to the winding device 4 side is pushed up. At this time, the binding band B is held up and pushed up by the substantially V-shaped bottoms of the push-up fittings 5a and 5b.

  FIG. 2 is an enlarged view of the winding device 4 and the vicinity thereof. As shown in FIG. 2, the winding device 4 includes a winding roller 4c that is rotationally driven by a hydraulic motor 4C, and a pair of pressing rollers 4a configured to be able to approach and separate from the winding roller 4c. 4b, and the binding band B after being pushed up by the push-up device 5 can be wound into a coil. More specifically, the pair of pressing rollers 4a and 4b are configured to perform an approaching / separating operation around the pivot shaft 4d with respect to the winding roller 4c by an expansion / contraction operation of the hydraulic cylinder 4B (see FIG. 9). At the same time, these pressing rollers 4a and 4b are configured to be inserted and removed from the back of the sheet of FIG. 2 to the front of the hand (winding work space) by the expansion and contraction of the hydraulic cylinder 4A (see FIG. 9). It is configured to be inserted into the winding work space when the winding work is performed and to be detached from the winding work space after the winding is completed.

  The discharge device 7 includes a plate-like swing chute 7a configured to swing around a fulcrum 7c, and a bowl-shaped (U-shaped cross-section) discharge fixed to the fixed post 6 via an attachment member. A chute 7b and a pneumatic cylinder 7A for swinging the swing chute 7a are provided.

  Here, the winding operation and discharging operation of the cut binding band B will be described with reference to FIG.

  First, the band winding operation by the winding device 4 will be described. As shown in FIG. 2, when the cut binding band B is pushed up by the lifting device 5, the binding band B is pressed against the winding roller 4c. Thereafter, the pressing rollers 4a and 4b are inserted forward from the back (original position) in FIG. 2, and then approach the winding roller 4c. Thereby, the binding band B is sandwiched between the winding roller 4c and the pressing rollers 4a and 4b. At this time, the pneumatic cylinder 7A is stopped in the rod contracted state, and the swing chute 7a is in contact with the binding band B in a state of lowering right as shown by a broken line in FIG. And the raising metal fittings 5a and 5b of the raising device 5 are returned to the respective standby positions by the extending operation of the pneumatic cylinder 5A.

  Thereafter, the gripping and cutting device 3 releases the binding band B, and the winding roller 4 c is driven to rotate at a low speed so that the binding band B moves in the rewinding direction indicated by the arrow 13. When the tip of the binding band B moves away from the swing chute 7a, the rod of the pneumatic cylinder 7A is in the most retracted position. When the pneumatic cylinder 7A (with sensor) detects this, the winding immediately takes place. The roller 4c is rotated at a high speed with the rotation being reversed. As a result, the binding band B moves in the winding direction indicated by the arrow 14, and is wound in a coil shape on the swing chute 7a by being wound with the pressing rollers 4a and 4b being pressed against the winding roller 4c. Taken. Thereafter, the band discharging operation by the discharging device 7 is performed, and the pressing rollers 4a and 4b are returned to their original positions. Note that the pressing rollers 4a and 4b may be driven when the winding roller 4c is driven. Side walls 12 are provided on both sides of the swing chute 7a so that the binding band B wound in a coil shape does not fall to the side of the swing chute 7a.

  Next, the band discharging operation by the discharging device 7 will be described. As described above, after the binding band B is wound around the swing chute 7a in a coil shape, the rod of the pneumatic cylinder 7A of the discharge device 7 is extended so that the swing chute 7a is shown as a two-dot chain line in FIG. The state is ascending to the right as indicated by. As a result, the binding band B wound up in a coil shape rolls down the discharge chute 7b from the swing chute 7a and is discharged to a collection container (not shown).

  Next, the detail of the holding | grip cutting device 3 is demonstrated with reference to FIGS. FIG. 3A is a view seen from the direction of the arrow 9 when the gripping / cutting device 3 is in contact with the coil C in FIG. 3 (b) is a partial perspective view taken along line XX in FIG. 3 (a), and FIG. 3 (c) is YY in FIG. 3 (a). It is the schematic seen from the line. FIG. 4A is an enlarged view taken along line XX in FIG. 3A, and FIG. 4B is a diagram extracted from FIG. 4A. FIGS. 5A and 5B are diagrams showing a method of attaching and removing the presser bar.

  FIG. 6A is a diagram showing a pair of gripping blocks 31 and 32 and a binding band B immediately before the start of the gripping operation of the gripping / cutting device 3 (just before the start of the lateral feed operation of the gripping block). (B) is a front view of the gripping and cutting device 3 at that time. FIG. 7A is a diagram showing the pair of gripping blocks 31, 32 and the binding band B during the gripping operation of the gripping / cutting device 3 (when the lateral feed operation of the gripping block is stopped), and FIG. These are front views of the holding | grip cutting device 3 at that time. FIG. 8A is a diagram showing the pair of gripping blocks 31 and 32 and the binding band B at the end of the gripping operation of the gripping / cutting device 3 (at the end of the approaching operation of the gripping block), and FIG. These are the front views of the holding | grip cutting device 3 at that time, FIG.8 (c) is an enlarged view of Fig.8 (a). 6 to 8 are mainly referred to in the description of operations described later.

  First, as shown in FIGS. 3A to 3C, the gripping and cutting device 3 includes two support rollers 37 and two resin-made support portions 38 on a main frame 30 that forms an outline and a skeleton thereof. The support roller 37 and the support portion 38 are attached so as to be on the forefront, and the coil C is in contact with the coil C (the state in which the gripping and cutting device 3 is in contact with the coil C). The main frame 30 is attached to the tip of the swing post 2 so that it can swing within a predetermined range.

  In addition, the gripping and cutting device 3 includes a pair of gripping blocks (grip part constituting bodies) 31 and 32. For example, as shown in FIG. 6 (a), the tip of one gripping block 31 is provided with a knife edge-shaped gripping portion 31 a for scooping the binding band B from the surface of the coil C, and the tip of the other gripping block 32. On the side, a grip portion 32a constituting a locking step portion is provided, and a pair of grip blocks 31 so that the grip portion 31a and the grip portion 32a face each other in the axial direction of the winding axis CL (FIG. 1) of the coil C. , 32 are arranged. The other gripping block 32 is provided with a guide 32b (not shown in FIGS. 8A and 8C) for guiding the binding band B to the tip of the gripping portion 32a. One gripping block 31 is attached with a cutting blade 33 (see also FIG. 8C) that is swingably attached and a hydraulic cylinder 3B for swinging the cutting blade 33. Yes. Cutting means is constituted by the cutting blade 33 and the hydraulic cylinder 3B.

  One gripping block 31 is swingably attached to the first mounting plate 34 so that the gripping portion 31a is along the surface of the coil C when the gripping and cutting device 3 is in contact with the coil C. Similarly, the other gripping block 32 is swingably attached to the second mounting plate 35 so that the gripping portion 32a is along the surface of the coil C when the gripping / cutting device 3 is in contact with the coil C. ing. That is, when the gripping and cutting device 3 is in contact with the coil C, the gripping portions 31 a and 32 a are in contact with the outer peripheral surface of the coil C in addition to the support roller 37 and the support portion 38.

  Further, a rail 36a of a linear guide 36 having two blocks 36b is disposed at the back of the main frame 30, the first mounting plate 34 is fixed to one block 36b, and the second block 36b is second. A mounting plate 35 is fixed. In FIG. 3A, the rail 36a between the pair of gripping blocks 31, 32 is not shown.

  The end of the first mounting plate 34 is connected to the rod head at the front end of the hydraulic cylinder 3A, and the end of the second mounting plate 35 is connected to the cap at the rear end of the hydraulic cylinder 3A. Further, the pneumatic cylinder 3C is fixed to the side of the main frame 30, and the second mounting plate 35 is connected to the rod head of the pneumatic cylinder 3C. In FIG. 3C, the pneumatic cylinder 3C is not shown.

  With the above configuration, the movement operation in the direction indicated by the arrow 18 of the grip blocks 31, 32 attached to the first and second attachment plates 34, 35 is performed by the expansion / contraction operation of the pneumatic cylinder 3C, and the hydraulic cylinder 3A The operation of moving the pair of gripping blocks 31 and 32 toward and away from each other by the expansion and contraction operation is performed.

  The gripping and cutting device 3 includes a coil detection rod 10 and a proximity sensor 11. The coil detection rod 10 is configured to be capable of advancing and retreating, and is brought forward when the gripping and cutting device 3 is brought into contact with the coil C. The coil detection rod 10 detects the coil C by contacting the coil C and outputs a detection signal. The proximity sensor 11 detects the coil C when the gripping / cutting device 3 contacts the coil C, and outputs a detection signal. The detection signals of the coil detection rod 10 and the proximity sensor 11 are input to the control device 8.

  Further, the gripping / cutting device 3 includes a band detection sensor (band detection means) 61 for detecting the binding band B during the lateral feed operation of the gripping blocks 31 and 32. The band detection sensor 61 is constituted by, for example, an optical fiber sensor, is attached to the second attachment plate 35 via an appropriate attachment member, and moves together with the grip block 32. Here, the band detection sensor 61 is gripped as shown in FIGS. 7A and 7B when the gripping blocks 31 and 32 are laterally moved in the direction indicated by the arrow 15 in FIG. The binding band B can be detected at the same time or almost simultaneously when the binding band B is hooked on the grip 32a of the block 32 (in other words, when the binding band B comes into contact with the stepped portion of the grip 32a or immediately before it comes into contact). Has been placed.

  The band detection sensor 61 is connected to the control device 8 and outputs a band detection signal to the control device 8 when the binding band B is detected. As soon as the band detection signal is input, the control device 8 stops the lateral feed operation of the grip blocks 31 and 32 (step S4 in FIG. 10), and performs the approach operation of the grip blocks 31 and 32 (FIG. 10). Step S5) is configured.

  In addition, a band presser 40A having a presser bar (bar-shaped member) 40 for pressing the binding band B against the outer peripheral surface of the coil C is attached to the gripping and cutting device 3. The band presser 40A is configured to be urged so that the presser bar 40 is always pressed against the outer peripheral surface of the coil C when the gripping and cutting device 3 is in contact with the coil C. The surface of the presser bar 40 is subjected to anti-slip processing (for example, knurling), so that when the binding band B is pressed, the binding band B can be firmly fixed. The configuration of the band presser 40A will be further described with reference to FIGS.

  As shown in FIG. 5A, both ends of the presser bar 40 are fixed to the support frame 41 via connection members 42. Here, the connecting members 42 at both ends are respectively fixed to the support frame 41 with bolts 43. As shown in FIG. 5B, the presser bar 40 can be removed by simply removing one bolt 43. .

  Specifically, each of the connecting members 42 at both ends is provided with a protruding portion 42a and an insertion hole 42b through which the bolt 43 is inserted. And both ends of the presser bar 40 are provided with bottomed insertion holes 40a into which the protruding portions 42a are inserted. Further, screw holes 41 a for fixing the connection member 42 with bolts 43 are provided on both end faces of the support frame 41. With such a configuration, the presser bar 40 can be easily replaced by attaching and detaching one bolt 43. For example, it is possible to easily change to a presser bar 40 having a different type of anti-slip processing or to replace it with a new presser bar 40 depending on the binding state of the binding band.

  The portions near both ends of the support frame 41 are fixed to the arm portions 44 (FIG. 4B), respectively. Each arm portion 44 is provided with a shaft hole 44a, and a biased portion 45 and a stopper portion 46 are projected as shown in FIG. 4B. A shoulder bolt 50 is inserted into the shaft hole 44a of the arm portion 44, and the shoulder bolt 50 is fixed to the attachment member 53 (FIG. 3). The attachment member 53 is fixed to the main frame 30 via an appropriate connecting member or the like. Thereby, the arm part 44 is supported by the shoulder bolt 50 so as to be swingable.

  Further, the biased portion 45 is provided with a spring insertion hole 45a, and one end of the compression spring 48 is inserted therein. A spring retainer plate 49 is attached to the other end of the compression spring 48 and is inserted into the spring insertion hole 56 a of the spring holder 56. An adjustment bolt 52 for adjusting the urging force of the compression spring 48 by adjusting the position of the spring pressing plate 49 is attached to the spring holder 56. The spring holder 56 is fixed to the main frame 30 via a connecting member 57 and the like.

  A bolt 47 that contacts the stopper portion 46 is attached to the attachment member 54. The attachment member 54 is fixed to an attachment member 53 (FIG. 3) fixed to the main frame 30.

  With the above configuration, the presser bar 40 can swing in the direction of the arrow 51 around the shaft hole 44a (shoulder bolt 50), and the biased portion 45 is urged in the direction of the arrow 55 by the compression spring 48. Therefore, the presser bar 40 is urged in the direction of the arrow 58. The presser bar 40 extends in the axial direction of the winding axis (core axis) CL (FIG. 1) of the coil C in a state where the gripping and cutting device 3 is in contact with the coil C. When the device 3 is in contact with the coil C, the binding band B is pressed against the outer peripheral surface of the coil C by the presser bar 40. It should be noted that the presser bar 40 has a pair of gripping portions 31a and 32a when the presser bar 40 extends in the axial direction of the winding axis CL of the coil C and the pneumatic cylinder 3C expands and contracts. It is comprised so that the movable range of the clearance gap between the holding parts 31a and 32a may be included. Further, here, when the gripping and cutting device 3 is brought into contact with the coil C, the binding band B that binds the coil C is within the movable range of the gap between the pair of gripping portions 31a and 32a. It shall be wound.

  Moreover, FIG. 9 is a block diagram which shows the outline of the control system of the binding band cutting device of this embodiment. The control device 8 includes a hydraulic cylinder 2A, a hydraulic cylinder 3A, a hydraulic cylinder 3B, a pneumatic cylinder 3C, a hydraulic cylinder 4A, a hydraulic cylinder 4B, a hydraulic motor 4C, a pneumatic cylinder 5A, a pneumatic cylinder 7A, and not shown. Each actuator including the actuator is connected to each control unit (not shown) of each actuator by a control line, so that the operation of these actuators can be controlled. The control device 8 is also connected to the coil detection rod 10, the proximity sensor 11, and the band detection sensor 61, and each detection signal is input. Therefore, the entire operation of the binding band cutting device of the present embodiment is controlled by the control device 8. The control device 8 can be constituted by, for example, a microcontroller. The control device 8 may be configured by a single control device that performs centralized control, or may be configured by a plurality of control devices that perform distributed control in cooperation with each other.

  The operation of the binding band cutting device of the present embodiment configured as described above will be further described with reference to FIG. FIG. 10 is a flowchart showing an example of the operation of the binding band cutting device of the present embodiment. This operation is realized by processing of the control device 8.

  First, the contact operation to the coil in step S1 is such that the control device 8 extends the hydraulic cylinder 2A to tilt the swing post 2 from the origin position to the coil C side around the pivot shaft 2a. The gripping / cutting device 3 disposed at the tip of the swing post 2 is brought into contact with the outer peripheral surface of the coil C. At this time, first, the advancing / retracting coil detection rod 10 is advanced, the hydraulic cylinder 2A is extended, and when the coil detection rod 10 comes into contact with the coil C and the coil C is detected, the expansion of the hydraulic cylinder 2A is increased. When the operation is slowed down and the coil C is detected by the proximity sensor 11, the extension operation of the hydraulic cylinder 2A is stopped.

  At this time, for example, as shown in FIGS. 6A and 6B, the gripping / cutting device 3 is brought into contact with the coil C so that the binding band B is positioned substantially at the center of the gripping / cutting device 3. At this time, the hydraulic shilling 3A is in an extended state, and the pair of gripping portions 31a and 32a is maintained at a predetermined distance. Further, as described above, while the gripping and cutting device 3 is in contact with the coil C, the presser bar 40 is pressed against the outer peripheral surface of the coil C, and is bound between the presser bar 40 and the outer peripheral surface of the coil C. The band B is sandwiched. That is, the binding band B is pressed against the outer peripheral surface of the coil C by the presser bar 40.

  After the gripping and cutting device 3 contacts the outer peripheral surface of the coil C in this way, in the next step S2, the grip block transverse feed operation (the lateral feed movement operation of the gripping portions 31a and 32a) is started. In this transverse feed operation, the control device 8 operates (extends) the pneumatic shilling 3C (second drive means), thereby causing the pair of gripping blocks 31 and 32 to move around the winding axis (core axis) of the coil C. It is moved in the axial direction of CL (FIG. 1) (moved in the direction indicated by arrow 15 in FIG. 6A).

  During this movement, the control device 8 determines whether or not a band detection signal is input from the band detection sensor 61 (whether or not the binding band B is detected) (step S3). 7A and 7B, when the binding band B is located immediately below the band detection sensor 61, the binding band B is detected and a band detection signal is input to the control device 8. . When the band detection signal is input, the control device 8 stops the operation of the pneumatic shilling 3C and stops the lateral movement operation of the gripping block (step S4). At this time, the binding band B is locked (contacted) with the gripping portion 32a (stepped portion) of the gripping block 32.

  Next, the approaching operation of the gripping block (the approaching operation of the gripping portions 31a and 32a) in step S5 is performed. In this approaching operation, the control device 8 causes the hydraulic shilling 3A (first driving means) to contract, so that the grip block 31 moves in the direction of the arrow 16 as shown in FIGS. 8 (a) and 8 (b). Then, the two gripping blocks 31, 32 approach each other, and the gripping portion 31a of the gripping block 31 rolls under the binding band B that is locked by the gripping portion 32a, and is bound between the pair of gripping portions 31a, 32a. Band B is gripped.

  Next, the band cutting operation in step S6 is performed. This is because the control device 8 extends and retracts the hydraulic cylinder 3B in a state where the binding band B is gripped by the pair of gripping portions 31a and 32a, so that the cutting blade 33 is pivoted as shown in FIG. The binding band B is cut by swinging in the direction of arrow 17 about 33a. Even after this cutting, the control device 8 maintains the state in which the binding band B is gripped by the pair of gripping portions 31a and 32a by maintaining the contracted state of the hydraulic cylinder 3A.

  Next, in the detachment operation from the coil in step S7, the control device 8 causes the hydraulic cylinder 2A to contract, thereby returning the swing post 2 to the origin position and detaching the gripping and cutting device 3 from the outer peripheral surface of the coil C.

  Next, in step S8, the band push-up operation is performed by causing the control device 8 to contract the pneumatic cylinder 5A, so that the bundled band B cut by the push-up fittings 5a and 5b is wound up as shown in FIG. Push up to 4 side.

  Thereafter, the band winding operation in step S9 and the band discharging operation in step S10 are performed as described above, and the cut binding band B is wound into a coil shape by the winding device 4 and is discharged from the discharge chute 7b of the discharging device 7. Discharged.

  In the present embodiment, when the binding band B is gripped and cut by the gripping and cutting device 3, the band detection sensor 61 is moved by the band detection sensor 61 after the lateral feed operation of the gripping blocks 31 and 32 (the gripping portions 31a and 32a) is started. When B is detected, the lateral feeding operation is stopped and the approaching operation is performed so that the gripping portions 31a and 32a grip the binding band B. Therefore, even when the binding of the binding band B is loose, The binding band B can be gripped and cut satisfactorily without being moved by the lateral feed operation, and cutting failure of the binding band B can be prevented.

  Furthermore, when the binding band B is gripped and cut by the gripping and cutting device 3, the binding band B is pressed against the outer peripheral surface of the coil C by the presser bar 40 of the band pressing device 40A. Regardless of whether it is slow or steep (bundling condition), the band detection sensor 61 can accurately detect the binding band B, make the binding band B stationary, and grip and cut the binding band B better. Cutting failure can be prevented more. Thus, although it is more preferable to provide the band pressing device 40A, it is not always necessary to provide it.

  Further, the presser bar 40 of the band presser device 40A is urged by the compression spring 48, the band presser device 40A is attached to the gripping / cutting device 3, and the gripping / cutting device 3 contacts and separates from the outer peripheral surface of the coil C. Accordingly, since the presser bar 40 is configured to abut (press) and separate from the outer peripheral surface of the coil C, the band presser device 40A can be simply configured and does not need to be controlled.

  Further, a presser bar similar to the presser bar 40 is sandwiched across the range in which the gap between the pair of gripping parts 31a and 32a moves when the pair of gripping parts 31a and 32a is moved by the pneumatic cylinder 3C. You may arrange | position so that 40 may be opposed. In this case, since the binding band B is pressed against the outer peripheral surface of the coil C by the two presser bars, even when the binding of the binding band B is loosened, the binding band B is firmly fixed, and the binding band B Can be better gripped and cut, and the cutting failure of the binding band B can be further prevented.

  In the present embodiment, an optical fiber sensor is used as the band detection sensor 61, but other sensors may be used as long as the binding band B can be detected. For example, a contact type sensor or an image sensor may be used. In the case of an image sensor, for example, a light / dark boundary at the edge of the binding band B may be detected.

  It goes without saying that the present invention is not limited to the above-described embodiment, and can be implemented in a mode appropriately modified by those skilled in the art.

  The present invention is useful as a binding band cutting device that can cut a binding band satisfactorily.

B Binding band C Coil 3 Gripping and cutting device 8 Controllers 31 and 32 Grip blocks 31a and 32a Gripping part 33 Cutting blade 3A and 3B Hydraulic cylinder 3C Pneumatic cylinder 40A Band presser device 40 Presser bar 48 Compression spring 61 Band detection sensor

Claims (5)

A binding that is configured to be capable of contacting and separating from an outer peripheral surface of a coil around which a thin plate is wound, and is wound around the outer peripheral surface of the coil and bound to the coil while being in contact with the outer peripheral surface of the coil A band gripping and cutting means configured to grip the band and cut the gripped binding band;
The band gripping and cutting means is
A pair of gripping portions for gripping the binding band by approaching from a state where they are separated from each other by a predetermined distance in the winding axis direction of the coil in a state of being in contact with the outer peripheral surface of the coil;
First driving means for causing the pair of gripping portions to approach from a state separated by the predetermined distance;
A second driving means for moving the pair of gripping portions in the winding axis direction of the coil in a state of being in contact with the outer peripheral surface of the coil;
Cutting means for cutting the binding band;
Band detecting means for detecting the binding band when the binding band is present at a predetermined position between the pair of gripping parts while the pair of gripping parts are being moved by the second driving means;
After the pair of gripping portions are separated from each other by the predetermined distance, the second driving unit starts to move the pair of gripping portions in the winding axis direction of the coil, and then the band detection unit is configured to bind the binding band. When the first driving means stops the movement of the pair of gripping portions by the second driving means, the first driving means causes the pair of gripping portions to approach and grip the binding band. And control means for controlling the cutting means so as to cut the binding band after controlling the second driving means,
Cable tie cutting device. Of the pair of gripping portions, the gripping portion on the rear side in the movement direction in the movement by the second driving means has a stepped portion that is caught by the binding band during the movement,
The band detecting means moves together with the gripping portion having the stepped portion so as to detect the binding band when the binding band comes into contact with the stepped portion or immediately before the paired gripping portion is moved. Arranged to
The binding band cutting device according to claim 1. A rod-shaped member extending in the winding axis direction of the coil in a state where the band gripping and cutting means is in contact with the outer circumferential surface of the coil, and the rod-shaped member presses the binding band against the outer circumferential surface of the coil. Further provided with a band pressing means biased by
The binding band cutting device according to claim 1 or 2. The bar-shaped member of the band pressing means is urged by a spring;
The band pressing means is
Attached to the band gripping and cutting means, the band gripping and cutting means is configured to contact and separate from the outer peripheral surface of the coil as the band gripping and cutting means contacts and separates from the outer peripheral surface of the coil. When the band gripping and cutting means is in contact with the outer peripheral surface of the coil, the rod member is biased by the spring so as to be pressed against the outer peripheral surface of the coil.
The binding band cutting device according to claim 3. The band pressing means is
5. The bundling according to claim 3, wherein two rod-shaped members are provided, and the two rod-shaped members are arranged to face each other across a range in which a gap between the pair of gripping portions moves. Band cutting device.

Images