JPH08282614A - Packing machine - Google Patents

Abstract

PURPOSE: To smoothly guide a band into a band path of a band guide without a resistance to reduce the damage of the band and to obtain the band path of the band guide suitable for a different lateral width of a band by a simple constitution. CONSTITUTION: Band guides 30, 39 for guiding and feeding a packing band B are provided. In the band guides 30, 39, band guide rotating bodies (ball bearings) 66 are disposed on both sides of a band path P so as to be idly rotated. The band guides 30, 39 each consist of a first clamping guide 40 positioned on the top surface of the band B, a second clamping guide 50 positioned on the lower surface of the band, and a laterally moving clamping guide 60 positioned on the lower side of the band and laterally moved to the second clamping guide 50 for adjusting the width of the band path P.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The present invention is capable of automatically performing a work of winding a tape-shaped band made of a thermoplastic material such as polypropylene around an article to be packed and binding the polymerized portion by welding. Regarding the packing machine
Particularly, it relates to a band guide for guiding and holding the band.

[0002]

2. Description of the Related Art Generally, in order to improve the efficiency and labor saving of packing work, a band made of a thermoplastic resin such as polypropylene is wound around an object to be packed, and the band is tightened. A packing machine that is capable of heating, melting and pressing and automatically performing the work up to cutting has already been put into practical use.

The packing machine includes, for example, a box-shaped main body housing having a work table on which an object to be packed is placed, and a gate-shaped band guide arch portion for band guide arranged on the main body housing. I have it. A reel housing portion for housing a reel unit loaded with a band coil is provided in the main body housing, and a band fed from the reel unit is fed and tightened between the reel housing portion and the work table. A band feeding and tightening mechanism for carrying out and a band supply end processing mechanism for carrying out heating, melting, pressure bonding and cutting of the polymerized portion where both ends of the band are butted are arranged.

The band delivery tightening mechanism is provided with a pair of band holding rollers composed of a feed roller rotated by a stepping motor and a pinch roller pressed against the feed roller by pressure adjusting means such as a solenoid type actuator. ing. Below the pair of band holding rollers, a receiving side band guide including a pair of members having a band guiding passage therein is arranged, and from the upper surface of the feed roller toward the central portion of the work table. A delivery side band guide including a pair of members having a band guide passage is disposed inside.

The receiving side band guide guides and guides the band fed from the reel unit to the pair of band holding rollers, and the sending side band guide processes the band from the pair of band holding rollers to the band supply end processing. It guides and guides the mechanism.

[0006]

In the band delivery tightening mechanism of the conventional packing machine as described above, the receiving side band guide and the delivery side band guide have a guide passage for guiding the band inside. Since it is composed of a joined body of sheets, when the feed roller and the pinch roller are rotationally driven to perform band feeding, primary tightening, and secondary tightening, the side surface of the band is the receiving side band guide. Alternatively, friction is generated by contacting both side surfaces of the guide passage of the delivery side band guide, the passage resistance of the guide passage increases, the supply load for feeding the band becomes high, and the guide passage becomes long-term use. There was a problem that both sides were worn out and needed to be replaced.

A plurality of types of bands having different widths are prepared for the band used in the packing machine, and the bands having different widths are used depending on the purpose of use. With a band guide made of a joined body of two plates having a guide passage for guiding, it was not possible to obtain a width of the guide passage that fits a plurality of bands having different lateral widths to be used.

The present invention has been made in view of the above problems, and its object is to guide the band smoothly into the guide passage of the band guide without resistance, and to provide both sides of the band and the passage. The object of the present invention is to provide a guide passage of a band guide which fits different lateral widths of the band with a simple structure while reducing the damage of the portion.

[0009]

[Means for Solving the Problems] To achieve the above object,
The packing machine according to the present invention has a band guide that guides and transfers a packing band, and the band guide has a band guide rotating body laid loosely on both sides of the band passage. The feature is that it is a bearing.

The band guide is laterally moved with respect to the first holding guide located on the upper surface side of the band, the second holding guide located on the lower surface side, and the second holding guide located on the lower surface side. And a band-moving sandwiching guide for adjusting the band passage width, and the band guide is arranged on the band receiving side or the sending side of the band sending and tightening mechanism.

[0011]

In the packing machine according to the present invention constructed as described above, the band guides for guiding and transferring the packing band have band guide rotating bodies (balls) in idle states on both sides of the band guide passage formed therein. Since the bearing is arranged, even if the band guided to the band guide passage moves to the left and right in the course of its transfer and comes into contact with the band rotation guide (ball bearing), the band rotation guide (ball) Since the bearings) are arranged so as to rotate freely, they rotate in the transfer direction of the band, and the contact with the band becomes rolling frictional contact, so that the band exerts a large resistance in the band guide passage with little friction. It moves and is transferred without receiving.

Further, when using bands having different lateral widths, both the sending side band guide and the receiving side band guide are moved laterally with respect to the second holding guide of the band guide. Change the width of the band passage formed in the both band guides,
Make sure that the packing operation is performed with a width that matches the width of the band using the band passage.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic front view of the packing machine 10 of this embodiment, showing an automatic example. The packing machine 10 is a packed machine W.
An arch portion 15 for band guide is provided on a box-shaped main body housing 13 having a work table 14 on which a band reel 16 having a band coil BC is stored and supported. ing. The casters 1 are provided at the four corners of the bottom surface of the main body housing 13.
9 and 19 are attached so that the entire packing machine 10 can be easily moved.

The band reel 16 is a band coil B.
A drum 17 loaded with C, a reel shaft 16a that rotatably supports the drum 17, a band reel mounting member 18 to which one end of the reel shaft 16a is fixed, the band reel mounting member 18, and the drum. 17 and a band reel brake device 11 arranged between them. A space between the band reel 16 and the work table 14 is filled with a band including a pool feed roller 21, a pressing roller 22, a band guide 23, a pool chamber 24, and the like.
A pool mechanism L, a band delivery tightening mechanism S (described later in detail) for sending out and tightening the band B supplied from the band filling / pooling mechanism L, and a front end portion and a rear end portion of the band B sent out and tightened. A band end known per se which is driven by a stepping motor in which a superposed portion of the band B is heated by a heater, a melted part is pressure-bonded by a press, then cooled and joined, and a rear end of the band B is cut. A bundling mechanism including a processing mechanism (not shown) is arranged.

As shown in FIG. 2, the band feeding and tightening mechanism S arranged on the lower right side of the work table 14 has a feed roller 25 and a solenoid type actuator 27 which are rotationally driven by a stepping motor (not shown). And a pinch roller 26 that is pressed against the feed roller 25 by a pressure adjusting means. A receiving side band guide 30 for guiding the band B fed from the band filling / pooling mechanism L between the two rollers 25 and 26 is disposed below the rollers 25 and 26. Together with the feed roller 25
A band guide 39 on the delivery side is provided from the upper surface of the work table 14 toward the central portion of the work table 14. The tip end of the band B sandwiched between the feed roller 25 and the pinch roller 26 and sent out is received by the sending side band guide 39 and sent out, and passes through the top of the band end processing mechanism (not shown). Then, the gate-shaped arch portion 15
And is guided around the article W placed on the work table 14 in a loop shape.

Next, the details of the sending side band guide 39 will be described with reference to FIGS. The delivery side band guide 39 is located on the upper surface side of the band B, the second holding guide 50 is located on the lower surface side, and is located on the lower surface side and is lateral to the second holding guide 50. It is composed of a lateral movement holding guide 60 that moves to adjust the width of the band passage P.

The second holding guide 50 includes a lower band guide plate portion 51 having a band sliding surface 51a and an elongated convex portion 51b for maintaining a gap in the band passage P, and from one side of the lower band guide plate 51. And a band guide support plate portion 52 extending downward at a right angle. The band guide support plate portion 52 is fixed to a side wall (not shown) provided upright in the main body housing 13 by appropriate mounting and fixing means such as bolts and welding. A pair of cylindrical rod-shaped guide support stays 53, 53 extending vertically from the plate surface of 52 and guiding and supporting the lateral movement sandwiching guide 60 are fixed to the plate surface of the band guide support plate portion 52 by welding or the like. . A band guide rotating body (miniature seal ball) in which set screw holes 54, 54 are formed in the center on both front and rear sides of the elongated convex portion 51b of the lower band guide plate portion 51 in the longitudinal direction (the feeding direction of the band B). Circular grooves 55, 55 for engaging the outer rings of the bearings 56, 56 in a free-wheeling state are formed by counter boring or the like.

The lateral movement holding guide 60 has an elongated convex portion 6 for maintaining a gap between the band sliding surface 61a and the band passage P.
1b and a position adjusting plate portion 62 extending downward from one side of the moving band guide plate portion 61 at a right angle. On the front and rear sides in the longitudinal direction of the elongated convex portion 61b of the movable band guide plate portion 61,
Set screw holes 64, 64 are formed in the center, and band guide rotating bodies (miniature seal ball bearings) 66, 6
Circular grooves 65, 65 are formed to engage the 6 in a free rotation state. A rotating body holding plate 71 is located above the moving band guide plate portion 61, and the rotating body holding plate 71 connects the band guide rotating bodies 66, 66 to the band guide plate portion 61.
And is arranged to form a passage P for the band B therebetween. On both front and rear sides in the longitudinal direction of the rotating body sandwiching plate 71, through holes 72, 7 for the set screw in which a plate is also seen.
2 is provided in the bottom of the set screw holes 72, 72, and circular grooves 73, 7 for engaging the band guide rotating bodies (miniature seal ball bearings) 66, 66 in an idle state.
3 is formed concentrically with the set screw holes 72, 72.

The band guide rotating bodies (miniature seal ball bearings) 66, 66 are circular grooves 65, 65, 7 between the band guide plate portion 61 and the rotating body holding plate 71.
3, 73 and 73, while inserting the rotating body set screws 67, 67 into the set screw through holes 72, 72 while being sandwiched between the plate portions 61, 71, the set screw holes 64,
By screwing into 64, the outer ring is tightened and fixed in a freely rotatable manner.

A pair of circular holes 68, 68 are formed in the front and rear of the position adjusting plate 62, and the circular holes 68, 68 are fitted and supported by the cylindrical rod-shaped guide support stays 53, 53. Support stay bolt 6 having support holes 69a, 69a
9, 69 are inserted and fastened and fixed to the position adjusting plate portion 62 by stay bolt fixing nuts 70, 70 located on the back surface side of the position adjusting plate portion 62. Screw holes 74, 74 for thumbscrews are formed in the lower portions of the support stay bolts 69, 69, and screw holes 74, 7 for thumbscrews are formed.
Position fixing thumbscrews 75, 75 for adjusting the positions of the support stay bolts 69, 69 on the guide support stays 53, 53 are screwed into the guide screw 4.

The first holding guide 40 is disposed above the second holding guide 50 and the lateral moving holding guide 60, and the first holding guide 40 moves laterally with the second holding guide 50. An upper band guide plate portion 41 facing the lower band guide plate portion 51 and the moving band guide plate portion 61 of the sandwiching guide 60, and a curve arranged at both front and rear ends of the upper band guide plate portion 41 in the band transfer direction. The band-shaped band guide plate portion 42 and the plate-shaped band guide plate portion 43 are provided. A plate-shaped groove portion 44 having an opening on one side is formed on the lower surface of the upper band guide plate portion 41, and the rotating body holding plate 71 is configured to be slidable in the lateral direction in the plate-shaped groove portion 44. Has been done. At the front and rear ends in the longitudinal direction inside the plate-like groove portion 44, there are elongated groove portions 4 which further extend in the lateral direction.
5, 45 are formed in the elongated groove portions 45, 45, and the rotary body set screw 6 for fastening and fixing the rotary body holding plate 71 is provided.
The heads 7 and 67 are loosely fitted and movable.
A pair of setscrew through holes 46, 46 are formed in the bottom of the plate-shaped groove portion 44 of the upper band guide plate portion 41 in the lateral direction, and the lower surface of the upper band guide plate portion 41 is formed with the above-mentioned holes. A pair of circular grooves 4 concentric with the through holes 46, 46 for the set screw.
7, 47 are formed.

After accommodating the band guide rotating bodies (miniature seal ball bearings) 56, 56 in the circular grooves 55, 55 of the lower band guide plate portion 51, the band guide rotating bodies (miniature seal ball bearings) 56. , 56 are housed in the circular grooves 47, 47 of the upper band guide plate portion 41, and the band guide rotating body (miniature seal ball bearing) 56, 56 is provided between the upper and lower band guide plate portions 41, 51. The upper band guide plate by inserting a pair of tightening fixing screws 48, 48 into the pair of set screw through holes 46, 46 and screwing the set screw holes into the set screw holes 54, 54. The portion 41 and the lower band guide plate portion 51 are integrally fixed.

Next, the support holes 69 of the support stay bolts 69, 69 fixed to the lateral movement holding guide 60.
a and 69a are fitted to the guide support stays 53 and 53 of the second holding guide 50, and the upper band guide plate portion 4
The rotating body holding plate 71 fixed to the lateral movement holding guide 60 is fitted into the plate-shaped groove 44 of one. In this state, the passage P between the elongated convex portion 51b and the elongated convex portion 61b.
After adjusting the lateral movement sandwiching guide 60 by moving it in the lateral direction so as to match the width of the band B to be used,
The position fixing thumbscrews 75, 75 are screwed and tightened, and the lateral movement holding guide 6 is mounted on the guide support stays 53, 53.
Fix 0.

When the band B is supplied, the band B is positioned and transferred on the band sliding surfaces 51a and 61a of the passage P between the elongated convex portions 51b and 61b. However, in the four band guide rotating bodies (miniature seal ball bearings) 56, 56, 66, 66 located on the front and rear sides of the elongated protrusions 51b, 61b, the outer circumference of the rotatable outer ring is the elongated protrusions 51b. , 61b
Is arranged so as to slightly project to the inside of the facing surface, that is, to the band B side. When the band B is guided and transferred by the arrangement, the left and right ends of the band B are the band guide rotating bodies (miniature seal ball bearings) 56, 5.
The outer ring of 6, 66, 66 is in contact with the outer ring. The band guide rotating body (miniature seal ball bearing)
Since the outer rings of 56, 56, 66, 66 are arranged in an idling state, the left and right ends of the band B are the band guide rotating bodies (miniature seal ball bearings) 56, 56, 66, 66 during transfer. When the outer ring is contacted, the band guide rotating bodies 56, 56, 66, 66 rotate and come into contact with each other in a rolling frictional state, and are transferred in a state where frictional resistance is small.

On the other hand, the receiving side band guide 30 has the band B drawn from the band filling / pooling mechanism L.
2 is guided between the two rollers 25 and 26. As shown in FIG. 2, a member is arranged in an upside-down relationship with the delivery side band guide 39, and the first holding guide located on the back side is disposed. 40 ', a second holding guide 50' which is also located on the back side, and a lateral movement holding guide 60 'which is located on the front side and moves laterally with respect to the second holding guide 50' to adjust the band guide width. Although the basic configuration is the same as that of the receiving side band guide 39, the upper guide plate of the first holding guide 40 ′ and the second holding guide 5 are configured.
The shape of the band receiving portion of the lower guide plate of 0'and the lower guide plate of the lateral movement holding guide 60 'that receives the band B from the band filling / pool mechanism L, the upper guide plate and the lower guide plate The shape of the band feeding portion between the two rollers 25 and 26 and the shape of the band guide support plate portion 52 'of the second holding guide 50' are different from those of the feeding side band guide 39, and the band B is The band filling / pooling mechanism L smoothly receives the band guide 30 on the receiving side, and the two rollers 25,
It is shaped so as to be guided and guided between the 26.

The receiving side band guide 30 is, like the sending side band guide 39, a plurality of idle band rotating guides (miniature seal ball bearings) located on the left and right in the transfer direction of the guide passage P of the band B. ) 66, 66 ... Guides the band B, and the second holding guide 5
0'is moved laterally along the guide support stays 53 ', 53' for guiding and supporting the lateral movement sandwiching guide 60 ', and the support stay bolts 69', 69 'are positioned at a position adapted to the lateral width of the band B. The position fixing thumbscrews 75 'and 75' are tightened and fixed to adjust the width of the band passage P.

Next, the operation of the illustrated packaging machine 10 which is an embodiment of the present invention will be described. In the packing operation, when a start switch of a control device (not shown) of the packing machine 10 is operated, a pool feed motor (not shown) of the band filling / pooling mechanism L is activated, and a tip portion of the band B is in a pressure contact state. The band guide 23 passes between the pressing roller 22 and the pool feed roller 21, is inverted by the band guide 23, moves upward, and is guided to the receiving side band guide 30 of the band delivery tightening mechanism S.

Since the plurality of band guide rotating bodies (miniature seal ball bearings) 66, 66 ... In the idle state are arranged on the left and right sides of the band passage P of the receiving side band guide 30, The band B thus guided moves in the left-right direction of the band passage P during the transfer process, and the band rotation guide bodies (miniature seal ball bearings) 66, 66 ...
・ Even if the outer ring comes into contact with the outer ring, it will come into contact in a rolling friction state, so that the band B can be kept in a state of low friction.
Is moved in the band passage P, and is guided to a contact portion between the feed roller 25 and the pinch roller 26 of the band delivery tightening mechanism S.

Since the feed roller 25 of the band delivery tightening mechanism S is rotationally driven by a stepping motor (not shown) for driving the feed roller 25 at the same time when the start switch of the control device is operated, the band B The leading end of the feed roller 25 is
It is nipped by the contact portion between the pinch roller 26 and the pinch roller 26, is rotatably transferred, and is guided to the delivery side band guide 39.

The band guide 39 on the delivery side guides the band B through the passage between the outer periphery of the feed roller 25 and the curved band guide plate part 42 to the upper band guide plate part 41 and the lower band guide plate part 42. Plate portion 51, and
It is guided and transferred to the band passage P formed by the moving band guide plate portion 61. Before and after and in the left and right of the band passage P in the band moving direction, the plurality of band rotation guide bodies (miniature seal ball bearings) 56, 6 in an idle state.
Since the outer rings 6 and so on are arranged, the band B moves to the left and right of the band passage P during the transfer process, and the band rotation guide bodies (miniature seal ball bearings) 56, 66 ,. Even if it comes into contact with, the contact will be in a rolling friction state, and the band B will be moved in the band passage P and guided to the upper part of the band end processing mechanism in a state with little friction.

The band B guided to the upper part of the band end processing mechanism goes out of the work table 14 and enters the arch portion 15, returns to the upper part of the band end processing mechanism again, and the band B By stopping the stepping motor of the band delivery tightening mechanism S by contacting the limit switch of the band end processing mechanism (not shown) with the tip end,
The band B stops the transfer and is set at the packing work start position.

When the object W to be packed on the work table 14 is to be packed at the packing work start position, the stepping motor of the band delivery tightening mechanism S is rotated in the opposite direction to the above. , Perform primary tightening and secondary tightening. Also at this time, the receiving side band guide 30
Since the band guides 39, 66, 66 ', etc. in the idle state are arranged on the left and right sides of the band passage P in the band transfer direction, the band guides 39, 66', ... The band B transferred in the passage P is guided and transferred in a state where the frictional resistance is small.

When using the bands B having different band widths, the position fixing thumbscrews 75, 75 '... Of the sending side band guide 39 and the receiving side band guide 30 are used.
And laterally move the lateral movement clamping guides 60, 60 'with respect to the second clamping guides 50, 50' to change the lateral width of the band passage P formed in both the band guides 30, 39, Perform packing work with a width that fits the width of the band used.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment,
Various changes in design may be made without departing from the spirit of the invention as claimed. For example, in the above-described embodiment, the first holding guide 40 is arranged to cover the upper portions of the second holding guide 50 and the lateral movement holding guide 60. However, depending on the place where the band guide is used, Alternatively, the one holding guide 40 may be located only above the second holding guide 50.

The band guide rotating body is not limited to a ball bearing as long as it is rotatable and has wear resistance.

[0036]

As can be understood from the above description, according to the present invention, the band guide rotating body is arranged in the passage of the band guide, so that the band is moved to the left and right while the band is passing through the band passage in the band guide. Even if it moves to one side, the band guide rotating body comes into contact in a rolling friction state, so that low friction
The band can be transferred in the band passage of the band guide with low resistance.

Further, by constructing the band guide rotating body with a ball bearing, it is possible to reduce wear of the contact portion with the band, and it is possible to use it for a long period of time. Further, since the lateral width of the band passage can be easily adjusted, the optimum width of the band passage can be set according to the type of band.

[Brief description of drawings]

FIG. 1 is a schematic front view with a front side wall removed to show an internal configuration of a packaging machine according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a band delivery tightening mechanism portion of the packing machine shown in FIG.

FIG. 3 is an enlarged plan view of a delivery side band guide of the band delivery tightening mechanism of FIG.

FIG. 4 is an enlarged side view of a delivery side band guide of the band delivery tightening mechanism of FIG.

5 is a cross-sectional view of the band guide on the delivery side of FIG.

6 is an exploded perspective view of the delivery side band guide of FIG.

[Explanation of symbols]

 10 Packing Machine 30 Band Guide (Receiving Side) 39 Band Guide (Sending Side) 40 First Clamping Guide 50 Second Clamping Guide 56 Band Guide Rotating Body (Ball Bearing) 60 Lateral Moving Clamping Guide 66 Band Guide Rotating Body (Ball Bearing) B band S band feeding tightening mechanism P band passage

Claims (4)

[Claims] 1. A packing machine 10 having band guides 30, 39 for guiding and transferring a packing band B, wherein the band guides 30, 39 are provided on both sides of a band passage P of the band guide rotating bodies 56, 66 ... A packing machine characterized by having an idle arrangement. 2. The packing machine according to claim 1, wherein the band guide rotating bodies 56, 66, ... Are ball bearings. 3. The band guides 30, 39 are a first holding guide 40 located on the upper surface side of the band B, a second holding guide 50 located on the lower surface side, and the second holding member located on the lower surface side. The packing machine according to claim 1 or 2, further comprising: a laterally-moving holding guide 60 that laterally moves with respect to the guide 50 to adjust the width of the band passage P. 4. The band guides 30 and 39 are arranged on the band receiving side or the band sending side of the band sending and tightening mechanism S, respectively.
Packing machine described.