JP3655091B2 - Tape guide mechanism for binding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This is a tape guide mechanism that is applied to a binding machine that forms a loop with a tape and binds an object to be bound by tightening the loop, and guides the tape traveling for loop formation.
[0002]
[Prior art]
Conventionally, as a compact bundling device for bundling banknotes, etc., a bundling tape with at least one side being heat-adhesive is wound around the object to be bundled, and the outer surface of the winding start portion and the inner surface of the winding end portion are polymerized. The heated portion is pressed against the polymerized portion by a heater, and the polymerized portion is thermally fused with the thermoplastic resin applied to the tape, thereby binding the objects to be bound. ing.
[0003]
In this bundling device, the tape fed from the unwinding part side is run along the arch-shaped guide path to form a tape loop along the guide path, and then the loop is narrowed down and arranged in the loop. Bundled objects are bundled.
[0004]
[Problems to be solved by the invention]
By the way, the guide member that guides the inner surface of the loop in the guide path supports and guides the inner surface of the loop when the loop is formed, and must retract from the tape when the tape is tightened to reduce the loop diameter. .
[0005]
Therefore, in the conventional tape guide mechanism, a guide member is disposed only on one side in the width direction of the tape, and this guide member is advanced to the tape side to guide the tape that travels when forming a loop. In order to allow the tape to be tightened when the loop diameter is reduced, the tape is moved to a retracted posture in which the tape is retracted.
[0006]
However, in order to stably guide the running of the tape with a single guide member, it is necessary for the guide member to advance and support at least half of the tape width.
[0007]
For this reason, a guide member becomes a big thing and the stroke amount of the advance / retreat of a guide member also becomes very large. As a result, there has been a problem that the tape guide mechanism becomes very large, and as a result, the binding machine becomes large.
[0008]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a tape guide mechanism of a binding machine that can be reduced in size.
[0009]
[Means for Solving the Problems]
As a problem-solving means for achieving the above object, according to an embodiment of the present invention, a loop is formed by a tape, and a binding machine that binds an object to be bound by tightening the loop travels for loop formation. A tape guide mechanism having a guide path for guiding a tape, which is supported on both sides of the tape in the width direction orthogonal to the tape traveling direction by a support member so as to be movable back and forth in the width direction of the tape. A pair of guide path forming members that are displaceable between a guide attitude for guiding the tape traveling during loop formation and a retracted attitude for retracting the tape to permit tightening of the tape when the loop diameter is reduced, and the guide attitude of the guide path forming member retracted position and a driving mechanism for driving is provided on the said drive mechanism is driven altogether a first end corresponding to each other of the pair of guide path forming member A first drive mechanism and a second drive mechanism that collectively drive second ends corresponding to each other, wherein each of the first and second drive mechanisms includes a displacement direction of the guide path forming member. And a conversion mechanism that converts the displacement of the movable member into the displacement of both guide path forming members. The conversion mechanism includes a pair of movable members formed on the movable member. The groove cam mechanism includes a guide groove and a cam follower formed in each guide path forming member and guided by a cam surface in the corresponding guide groove .
[0010]
In the conventional case where the tape travel is supported by a single guide member, the guide member must be advanced to half or more (preferably substantially the full width) of the tape width, so that a large guide member is used. It was necessary, and the stroke amount of the advance and retreat was also long.
[0011]
On the other hand, in this aspect, since both sides of the tape are supported by the pair of guide path forming members, the entire tape can be stably supported only by supporting the vicinity of both edges of the tape. Therefore, each guide path forming member can be made small, and the total stroke amount of both the guide path forming members can be made shorter than the conventional stroke amount of the single guide member.
[0013]
The drive mechanism includes a first drive mechanism that collectively drives the first ends corresponding to each other of the pair of guide path forming members and a second drive that collectively drives the second ends corresponding to each other. 2 drive mechanisms, the following advantages are obtained. That is, in order to smoothly displace the guide path forming member, it is necessary to drive at least a pair of end portions. If each guide path forming member is individually driven, it is necessary to provide at least four drive mechanisms. . On the other hand, in this aspect, each drive mechanism collectively drives a pair of corresponding end portions of both guide path forming members, so that a pair of drive mechanisms is sufficient, and the drive mechanism is simplified. Can do.
[0015]
Furthermore, each of the first and second drive mechanisms is a movable member driven by the drive means in a direction intersecting the displacement direction of the guide path forming member, and converts the displacement of the movable member into the displacement of both guide path forming members. The conversion mechanism includes the following advantages. That is, by making the driving direction of the movable member by the driving means intersect with the advancing / retreating direction of each guide path forming member, the degree of freedom of arrangement of the driving means is increased and the size can be further reduced. As the driving means, a hydraulic cylinder that reciprocates the movable member is preferable because a small and sufficient driving force can be secured.
[0017]
Further, the conversion mechanism includes a groove cam mechanism including a pair of guide grooves formed on the movable member and a cam follower formed on each guide path forming member and guided by the cam surface in the corresponding guide groove. So there are the following advantages. In other words, since the groove cam mechanism works for both the advancement and retraction of the guide path forming member, the operation of the guide path forming member is reliable.
[0018]
Aspect of the invention according to claim 2, Oite to claim 1, each guide path forming member has a pair of flanges for guiding respectively the outer and inner surfaces of the tape forming a loop, and toward the tape side An outer fixed guide member that is formed of a groove-shaped member that is opened, is disposed between the pair of guide path forming members in an immovable manner, and guides the central portion in the width direction of the outer surface of the tape forming a loop. It is what.
[0019]
In this aspect, by using a pair of channel-shaped members, it is possible to guide the inner surface, the outer surface, and the edge of the traveling tape, and the traveling tape can be stably guided. Further, by using the outer guide member that is fixedly arranged, the tape can be stably supported even if the groove depth of the groove-shaped member is reduced. As a result, the guide mechanism can be further miniaturized through the miniaturization of the channel member.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described with reference to the accompanying drawings.
[0021]
FIG. 1 shows a main part of a binding machine including a tape guide mechanism according to a first embodiment of the present invention. Referring to the figure, the binding machine is of a type that forms a loop with a tape and binds the object to be bound by tightening the loop, and the object to be bound is placed on the upper surface of the machine frame 1 of the binding machine. A table 2 for placing the tape is formed, and a groove 3 as a tape path is formed in the table 2.
[0022]
The tape guide mechanism 4 is arranged on the upper part of the machine casing 1 and supported by the machine casing 1. The tape guide mechanism 4 includes a front fixing plate 5 and a rear fixing plate 6 that are fixed to the machine casing 1.
[0023]
By these front and rear fixing plates 5 and 6, a front guide path forming member 7, a fixed guide member 8 and a rear guide path forming for defining a guide path 10 for guiding a tape traveling for loop formation. The member 9 is supported via a support shaft described later. Both guide path forming members 7 and 9 are symmetrical, and are formed by groove-shaped members that open toward the tape side. As shown in FIG. 2A, the groove-shaped members forming the guide path forming members 7 and 9 are an upper flange 11 and a lower flange 12 that respectively guide the outer surface and the inner surface of the tape T forming a loop, and both flanges. 11 and 12 and a web 13 connecting the two. The web 13 regulates the position in the width direction of the running tape.
The fixed guide member 8 is disposed in a stationary manner between the pair of guide path forming members 7 and 9, and guides the central portion in the width direction of the outer surface of the tape forming a loop.
[0024]
Each guide path forming member 7, 9 slides in the width direction of the tape T (the front-rear direction in the present embodiment), thereby guiding the tape T that travels during loop formation as shown in FIG. As shown in FIG. 2 (b), it can be displaced to a retracted posture of retracting from the tape T so as to allow the tape T to be tightened when the loop diameter is reduced.
[0025]
Referring to FIG. 1 again, a pair of hydraulic cylinders 14 and 14 are fixed above the table 2 to the machine casing 1 as a drive mechanism for moving the front and rear guide path forming members 7 and 9 forward and backward, respectively. (For the rear drive mechanism, only one hydraulic cylinder 14 is shown).
The tape introduction side end 15 of each guide path forming member 7, 9 is inclined so as to enter below the discharge side end 16. Further, the discharge side end 17 of the fixed guide member 8 is bent upward so as to release the tape upward from the discharge side end 16 of both guide path forming members 7 and 9.
[0026]
Below the table 2, a tape traveling mechanism 20 that feeds and retracts the tape T is provided. The tape running mechanism 20 has a feed roller 18 and a bundling roller 19 made of rubber rollers. The feed roller 18 is driven and controlled so as to rotate forward (clockwise), and when the tape T of the winding portion (not shown) is fed toward the introduction side end 15 of both guide path forming members 7 and 9. used. The bundling roller 19 is driven and controlled so as to rotate reversely (rotate counterclockwise) with respect to the delivery roller 18.
[0027]
Metal driven rollers 21 and 22 are respectively disposed immediately above the feed roller 18 and the bundling roller 19. These driven rollers 21 and 22 are supported by the side plates of the binding machine main body 1 so as to alternately contact the corresponding feed rollers 18 and the binding rollers 19. That is, when feeding the tape T of the winding portion, the feeding roller 18 and the driven roller 21 are in contact with each other (at this time, the driven roller 22 is separated from the binding roller 19), and the tape T is placed around the object to be bound. In the case of binding by tightening, the binding roller 19 and the driven roller 22 are brought into contact with each other, and the sending roller 18 and the driven roller 21 are separated from each other.
[0028]
In addition, referring to FIG. 4, the mechanism of the binding machine includes a receiving plate 23 that can be moved back and forth to receive the lower surface of the object to be bound, and a lower surface of the receiving plate 23 from the front end portion of the tape T. A first clamp member 24 that clamps a portion separated by a predetermined distance, a second clamp member 25 that clamps between a lower end of the receiving plate 23 and a winding end portion of the tape T that is superimposed on the tip of the tape T, A heating pressing portion 26 that heats and presses the overlapping portion of the tape T between the clamp members 24 and 25, a cutter 27 that is elastically supported by the heating pressing portion 26, and cuts the tape T after heat sealing are disposed.
[0029]
Next, it will be described in more detail with reference to the exploded perspective view of FIG. Both guide path forming members 7, 9 and fixed guide member 8 are penetrated by a plurality of support shafts 28, 29, 30. The support shafts 28 and 29 are arranged corresponding to the left and right end portions of the both guide path forming members 7 and 9, and the support shaft 30 is arranged corresponding to the upper portion of the central portion between the left and right end portions. Both ends of the support shafts 28, 29, 30 are supported by the front fixing plate 5 and the rear fixing plate 6 via receiving members 31, respectively. The receiving member 31 includes a boss 32 through which the respective support shafts 28, 29, and 30 are inserted, and an annular flange 33 that is integrally formed at one end of the boss 32 and is screwed to the front fixing plate 5 and the rear fixing plate 6. Have. The ends of the set screws 34 that penetrate the annular flange 33 in the radial direction are pressed against the support shafts 28, 29, 30 to fix the support shafts 28, 29, 30.
[0030]
Reference numeral 35 denotes a bearing member that is slidably fitted in an axially intermediate portion between the support shafts 28 and 29. The bearing member 35 is a bush, and a corresponding guide path forming member 7 is provided at one end of the bush. , 9 are integrally formed with an annular flange 36 for screwing. Each of the guide path forming members 7 and 9 can be displaced between the guide posture and the retracted posture by sliding in the axial direction of the support shafts 28, 29 and 30. The bushing end surfaces of the pair of bearing members 35, 35 facing each other in the axial direction of the support shafts 28, 29 are in contact with the front surface and the rear surface of the fixed guide member 8. Is to be specified.
[0031]
Each hydraulic cylinder 14 is fixed to the machine frame 1 via a bracket 37. An adapter screw 38 fixed to the tip of the rod of each hydraulic cylinder 14 is fixed to the corresponding guide path forming members 7 and 9.
[0032]
Reference numerals 39 and 40 denote a pair of tape guides arranged below the table 2 and having a constant distance between each other. These tape guides 39 and 40 are guides for guiding the travel of the tape T from a winding portion of the tape T (not shown) to the tape guide mechanism 4 and are formed by groove-shaped members that open toward the tape side. 41 is a tape detection sensor for detecting the end of the tape T. Reference numerals 42 and 43 denote receiving bars which are formed integrally with a screw member for fixing the tape guides 39 and 40 to the machine frame 1 and receive the leading end of the tape T.
[0033]
Reference numeral 44 denotes a clamp bar provided with urethane claws 45. The clamp bar 44 is fixed to the tip of a swing arm 47 that is swingably supported around a support shaft 46. When the swing arm 47 is swung by the hydraulic cylinder 48, the tape T is clamped between the lower surface of the receiving plate 23 (see FIG. 4).
[0034]
49 and 50 consist of L-shaped plates, and restrict the positions of the guide path forming members 7 and 9 in the retracted position while being screwed to the left and right ends of the fixed guide member 8, respectively.
[0035]
Next, the bundling operation will be described with reference to FIGS. First, as shown in FIG. 4A, the object A to be bound is placed on the upper surface of the receiving plate 23 that has advanced into the groove.
[0036]
Next, as shown in FIG. 4B, the tape T is fed out by the feed roller 18 and the driven roller 21, and the front and rear guide path forming members 7 in the guide posture shown in FIG. , 9 along the guide path 10.
[0037]
Next, as shown in FIG. 4 (c), a loop L of the tape T is formed along the guide path 10, and a portion away from the tip of the fed tape T by a predetermined distance is formed on the lower surface of the receiving plate 23. It is clamped and fixed between the first clamp member 24 that has advanced.
[0038]
Next, the guide path forming members 7 and 9 are moved back to the retracted position shown in FIG. 2B with the space between them being increased, and the tape T is pressed by the bundling roller 19 as shown in FIG. 4D. 4 is pulled back to reduce the loop diameter, and after the reduction, as shown in FIG. 4 (e), the front end portion of the tape T and the winding end portion of the tape T are overlapped to form the lower surface of the receiving plate 23 and the second clamp member 25. After clamping in between, the heating pressing part 26 with the cutter 27 rises.
[0039]
After the heated pressing portion 26 is heated while pressing the overlapping portion Ta of the tape T against the lower surface of the plate 23 between the clamp members 24 and 25, the overlapping portion is heat-sealed, and then the tape T is removed by the cutter 27. After the cutting, the heating pressure unit 26 is lowered as shown in FIG. Thereafter, the backing plate 23 is retracted, and the binding is completed.
According to the present embodiment, since the both sides in the width direction of the tape T are supported by the pair of guide path forming members 7 and 9, the entire tape T can be stabilized only by supporting the vicinity of both edges of the tape T. Can be supported. Therefore, the guide path forming members 7 and 9 can be reduced in size, and the total amount of advance and retreat strokes of the both guide path forming members 7 and 9 is larger than the amount of advance and retreat stroke when a conventional single guide member is used. Can also be shortened. As a result, a small tape guide mechanism 4 can be achieved, and the binding machine can be downsized.
[0040]
Moreover, since a groove-shaped member is used as the guide path forming members 7 and 9, the inner surface, the outer surface, and the edge of the traveling tape T can be guided, so that the guide can be stably provided. Further, by using the outer guide member 8 that is fixedly arranged, the guide path forming members 7 and 9 made of a groove-shaped member can be further miniaturized. As a result, the tape guide mechanism 4 can be further miniaturized.
[0041]
5 to 8 show other embodiments of the present invention. Referring to FIG. 5, in the present embodiment, in tape guide mechanism 4A, left end portions 7a and 9a serving as first ends corresponding to each other of a pair of guide path forming members 7 and 9 are collectively driven. The first drive mechanism 51 and the second drive mechanism 52 that collectively drives the right end portions 7b and 9b as the second end portions corresponding to each other of the pair of guide path forming members 7 and 9 are provided.
[0042]
The drive mechanisms 51 and 52 are respectively in the direction intersecting with the displacement direction of the guide path forming members 7 and 9 (the front-rear direction in the present embodiment, the direction orthogonal to the paper surface in FIG. 5) (the upper and lower directions in the present embodiment). A movable member 53 that can be displaced in the direction), a hydraulic cylinder 54 that drives the movable member 53, and a conversion mechanism 55 that converts the displacement of the movable member 53 into the displacement of both guide path forming members.
[0043]
Referring to FIG. 6, the movable member 53 has a pair of vertically extending long holes 56, 57 arranged vertically, and support shafts 58, 59 fixed to the machine frame 1 in these elongated holes 56, 57. As a result, the movable member 53 is only allowed to be displaced in the vertical direction. The tip of the rod 54 a of the hydraulic cylinder 54 is fixed to the lower end portion of the movable member 53 by a mounting plate 60 and a mounting screw 61. In addition, a pair of guide grooves 62 and 63 are formed through the movable member 53, and each guide groove 62 and 63 has a cam follower 64 provided at the end of the corresponding guide path forming member 7 and 9. 65 is inserted respectively. The cam followers 64 and 65 are rollers that are pivotally supported on the end portions of the guide path forming members 7 and 9, and can smoothly roll on the cam surfaces that are the inner surfaces of the corresponding guide grooves 62 and 63.
[0044]
The distance between the pair of guide grooves 62 and 63 becomes narrower as they go downward. Therefore, as shown in FIG. 7, when the movable member 53 is raised by the hydraulic cylinder 54, both guide path forming members 7 and 9 come close to each other and assume a guide posture for guiding the traveling of the tape T. Conversely, as shown in FIG. 8, when the movable member 53 is lowered by the hydraulic cylinder 54, both guide path forming members 7, 9 move away from each other and assume a retracted posture that allows the loop diameter to be reduced. The pair of guide grooves 62 and 63 and the cam followers 64 and 65 guided by the guide grooves 62 and 63 constitute a conversion mechanism 55 including a groove cam mechanism. 7 and 8 show only the second drive mechanism 52, the same applies to the first drive mechanism 51.
[0045]
According to the present embodiment, the pair of corresponding end portions of the guide path forming members 7 and 9 are collectively driven by the drive mechanisms 51 and 52, so that a pair of drive mechanisms is sufficient. Can be simplified.
[0046]
Further, the driving direction of the movable member 53 by the hydraulic cylinder 54 as the driving means (vertical direction in the present embodiment) intersects the forward / backward direction (front-back direction in the present embodiment) of the guide path forming members 7 and 9. Therefore, the degree of freedom of arrangement of the drive mechanisms 51 and 52 is increased, and the size can be further reduced. Moreover, it is only necessary to provide a pair of relatively expensive hydraulic cylinders, and the structure can be simplified and the manufacturing cost can be reduced.
[0047]
In particular, since the groove cam mechanism is used as the conversion mechanism 55, the operation of the guide path forming members 7 and 9 is reliable.
[0048]
The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention.
[0049]
【The invention's effect】
According to the first aspect of the present invention, since both sides of the tape are supported by the pair of guide path forming members, the entire tape can be stably supported only by supporting the vicinity of both edges of the tape. Therefore, each guide path forming member can be made small, and the total stroke amount of both the guide path forming members can be made shorter than the conventional stroke amount of the single guide member. As a result, a small tape guide mechanism can be achieved, and the binding machine can be downsized.
[0050]
In addition , since each pair of driving mechanisms collectively drive the pair of corresponding end portions of both guide path forming members, a pair of driving mechanisms is sufficient, and the driving mechanism can be simplified.
[0051]
Furthermore , the driving direction of the movable member by the driving means can be made to intersect the advancing / retreating direction of each guide path forming member, so that the degree of freedom of arrangement of the driving mechanism is increased and the size can be further reduced.
[0052]
Moreover , since the groove cam mechanism is used, the operation of the guide path forming member is reliable.
[0053]
In the invention described in claim 2, since the inner surface, the outer surface and the edge of the running tape can be guided using the groove-shaped member, it can be guided stably. Further, by using the outer guide member that is fixedly arranged, the groove-shaped member can be reduced in size, so that the guide mechanism can be further reduced in size.
[Brief description of the drawings]
FIG. 1 is a partially broken perspective view of a main part of a binding machine including a tape guide mechanism according to an embodiment of the present invention.
FIGS. 2A and 2B are schematic cross-sectional views for explaining the operation of the guide path forming member, in which FIG. 2A shows a state in which the guide path forming member is in a guide position, and FIG. 2B shows a state in which the guide path forming member is in a retracted position; Is shown.
FIG. 3 is an exploded perspective view mainly showing a tape guide mechanism.
FIGS. 4A to 4F are schematic front views of a binding machine sequentially illustrating a binding process.
FIG. 5 is a partial cross-sectional schematic front view of a tape guiding mechanism as another embodiment of the present invention.
FIG. 6 is an exploded perspective view of a second drive mechanism.
FIG. 7 is a partial cross-sectional schematic side view of the tape guide mechanism showing a state in which the guide path forming member is in a guide posture.
FIG. 8 is a partial sectional schematic side view of the tape guide mechanism showing a state in which the guide path forming member is in a retracted posture.
[Explanation of symbols]
T Tape L Loop A Bundled object 1 Machine frame 4, 4A Tape guide mechanism 5 Front fixed plate 6 Rear fixed plate 7, 9 Guide path forming member 8 Fixed guide member 10 Guide path 11, 12 Flange 13 Web 14 Hydraulic cylinder ( Drive mechanism)
51 1st drive mechanism 52 2nd drive mechanism 53 Movable member 54 Hydraulic cylinder (drive means)
55 Conversion mechanism 62, 63 Guide groove 64, 65 Cam follower

Claims (2)

In a binding machine that forms a loop with a tape and binds an object to be bound by tightening the loop, a tape guide mechanism having a guide path for guiding a tape traveling for loop formation,
A guide posture and a loop reduction diameter that guides the tape running during loop formation by being supported by a support member so as to be able to advance and retract in the tape width direction on both sides of the tape width direction perpendicular to the tape running direction. A pair of guide path forming members that are displaceable in a retracted position to retreat from the tape to allow tightening of the tape at times,
A drive mechanism for driving the guide path forming member to a guide posture and a retracted posture ;
The drive mechanism includes a first drive mechanism that collectively drives the first ends corresponding to each other of the pair of guide path forming members, and a second drive that collectively drives the second ends corresponding to each other. A drive mechanism,
Each of the first and second driving mechanisms converts a movable member driven by the driving means in a direction crossing the displacement direction of the guide path forming member, and converts the displacement of the movable member into the displacement of both guide path forming members. Conversion mechanism,
The conversion mechanism includes a groove cam mechanism including a pair of guide grooves formed in the movable member and a cam follower formed in each guide path forming member and guided by the cam surface in the corresponding guide groove. A tape guide mechanism for a binding machine. Each of the guide path forming members has a pair of flanges that respectively guide the outer surface and the inner surface of the tape forming a loop, and is formed of a groove-shaped member that opens toward the tape side,
2. The binding according to claim 1, further comprising an outer fixed guide member that is fixedly disposed between the pair of guide path forming members and guides a central portion in the width direction of the outer surface of the tape forming a loop. Tape guide mechanism of the machine.

Images