JP2598283Y2 - Packing machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packing machine,
The present invention relates to a packing machine capable of automatically or semi-automatically performing a work of winding a tape-shaped band made of a thermoplastic resin such as polypropylene around an object to be packed and welding and bonding a polymerized portion of the tape-shaped band.

[0002]

2. Description of the Related Art In general, a tape-shaped band made of a thermoplastic resin such as polypropylene is wrapped around an object to be packed, and the band is tightened. A packing machine has been already put to practical use in which a butt-polymerized portion is heated and melt-pressed and the operation up to cutting is automatically or semi-automatically performed. That is, as is well known, these packing machines rotate a camshaft and various cams externally fixed to the camshaft by driving force from an electric motor, and press, a heater plate, and a slide. A mechanism such as a table is operated at a shifted timing to perform operations such as gripping, pressing, melting, and cutting the band.

[0003]

In the conventional packing machine as described above, each structural member such as an outer frame member, a side plate, a leg, a top plate, a band reel mounting member and the like constituting the packing machine body is assembled. And a rigid structure that is firmly fixed to each other by fixing members such as bolts and nuts. Therefore, when assembling and disassembling the packing machine body, particularly the legs, it is necessary to use tools for tightening or removing the fixing member, and the like, so that the assembling and disassembling work is not easy. There is a problem that a great deal of time and labor is required for disassembling and assembling operations before and after transport. Also,
Since the large number of fixing members are configured to be tightened and removed from the outside of the body, a part of the fixing members protruding outside (eg, heads of bolts) may come into contact with the worker's body or other members. However, there is a problem in that it is a hindrance that it involves dangers such as damage to the body and objects, and also impairs the aesthetic appearance. Further, since the band reel mounting member is configured by using a plurality of brackets to secure the support rigidity of the band reel, the internal structure of the packing machine becomes complicated and expensive due to an increase in the number of parts, so that space is limited. In addition, there is a problem that the assembling / disassembling operation is not easy.

The present invention has been made in view of such a problem, and has as its object to provide a simple and inexpensive structure in which the number of parts can be reduced, and that the assembling and disassembling can be performed. Provided is a packing machine capable of easily performing operations, performing maintenance operations such as component replacement and the like, saving space, and improving appearance. It is.

[0005]

In order to achieve the above-mentioned object, a packing machine according to the present invention comprises a top plate on an upper surface and legs at four corners.
A band reel supported by a band reel mounting member is housed in a box-shaped packing machine main body provided with, and a band fed from the band reel is tightened between the band reel and the top plate. , Gripping, pressing,
A bundling mechanism for performing operations such as melting and cutting is arranged, the packing machine is composed of a plurality of structural units that can be disassembled and assembled without requiring tools, and the band reel mounting member has an L-shaped angle. The band reel is cantilevered, and is fixed to the packing machine body with a fixing member such as a thumb screw.

[0006]

[0007]

In the packing machine according to the present invention configured as described above, the packing machine has a leg, a band reel mounting member on which the band reel is mounted, and the leg removed from the packing machine body. It is composed of a plurality of structural units consisting of the main body housing unit, and the assembly and fixing work between these structural units is performed with fixing members such as thumb screws that do not require tools, so that assembly is quick and easy. And can be decomposed. In addition, since the fixing member of the leg portion has an internal tightening structure for tightening from the inside of the packing machine main body, there is no protruding portion, so that not only can damage due to contact with the body or other members can be prevented. It does not impair the aesthetic appearance.

[0008]

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 plan view of a packing machine according to the present invention, in which a top plate is removed to show the entire inside of the packing machine, FIG. 2 is a schematic front view of a cutaway main part, and FIG. It is a schematic diagram. FIG. 4 is an enlarged perspective view of a portion IV in FIG.

The packing machine 1 of the illustrated example has columns 3, 3,... Equipped with casters 2, 2,.
3. Top plate 4 horizontally mounted and attached to each upper end of ...
, A box-shaped packing machine body 10 having a box-like shape, comprising: a side plate 5 attached to and surrounding four side surfaces; and an inspection port (not shown) provided at an appropriate position of the side plate 5 so as to be freely opened. As a frame member. Further, a band guide arch (not shown) is formed on the upper part of the packing machine main body 10 and formed of a cylindrical body formed in a downward substantially U-shape to automatically arrange the band B around the article to be packed. Can be installed as needed. Also, legs 31, 31 of the columns 3, 3,...
, And the top plate 4 are integrally formed of, for example, an extruded aluminum material (both will be described later).

As shown in FIG. 4, the column 3 has a cylindrical leg 31 made of an extruded material such as aluminum, and a plate having bent portions 32a and 32a at both ends.
A holding member 32 for supporting and fixing the base member 1 to the packing machine main body 10, a reinforcing plate-shaped insertion member 33 inserted into the gap between the bent portions 32a, 32a and the side plate 5, and the packing machine main body 10. It comprises: thumb screws 34, 34 for tightening and fixing the leg 31 via the pressing member 32 from the inside; and a caster 2 attached to the lower end of the leg 31. The fitting member 33 and the bent portion 32a of the pressing member 32 are fixed by bolts 35, 35, and the upper end of the leg 31 is inserted into a gap formed at the ridge thereof, and the butterfly is inserted. It is supported and fixed by screws 34, 34.

The top plate 4 is, as shown in FIG.
A plurality of hollow portions 4 'extending in a direction perpendicular to the plane of the paper,
4 ′,... Are formed, and a center top plate 4c. The center top plate 4c
Is formed with a notch 106 in a band binding work site (above the band supply end processing means K described later).

A band reel 6 into which a band coil can be loaded is installed in the packing machine main body 10 by a band reel mounting member 103 described later with its central axis 6a oriented sideways. In addition, a plate-like support plate 11 extending horizontally and horizontally is fixedly mounted in an upper portion of the inside of the packing machine main body 10 on the opposite side (the right side in FIGS. 1 and 2) to the side where the band reel 6 is installed. Above the support plate 11, a band supply end processing means K (to be described in detail later), which includes various cams and arms for performing operations such as gripping, pressing, melting, and cutting the band B, is disposed. Has been established. And
The band supply end processing unit K together with the stepping motor M ₁ is arrayed cam drive with reduction gears 7 which allowed to drive a forward and reverse rotatable feed backfeed stepping motor M _2, the feed-back feed roller 8 , A band supply / tightening (feed / backfeed) means F composed of a rocker roller 9 and the like are provided side by side and fixed.

A plate-like support plate 101 extending horizontally and horizontally is fixedly mounted on the upper portion of the band reel 6, and the upper surface of the support plate 101 is provided with an odor generated when the band is melted. A ventilator V including a centrifugal blower and the like for sucking smoke and discharging the smoke to the outside is provided. An intake duct 102 whose upper end is connected to the hollow portion 4 'of the central top plate 4c is vertically connected to the intake side of the exhaust fan V. Further, the hollow portion 4 'of the central top plate 4c is used by the blower V to discharge the foul odor smoke discharged from the upper surface of the press 55 (see FIG. 5 described later) of the band supply end processing means K in the band melting step. To form an air duct.

As shown in FIG. 3, on the lower surface of the support plate 101, the band reel mounting member 103 having a substantially U-shaped cross section and an L-shape as a whole is provided with thumb screws 104, 104 as fixing members. It is fixed by using. in this way,
Since the band reel mounting member 103 is formed in an L-shape, even if the band reel 6 is cantilevered,
Sufficient support strength is obtained. Therefore, as the fixing member 104 for fixing the band reel mounting member 103 to the support plate 101, thumb screws 104, 104 that do not need to be firmly tightened with a tool are used.

As shown in FIG. 3, the band reel mounting member 103 has a horizontal portion 103a and a vertical portion 103.
b, and the horizontal portion 103a is
(See FIG. 2), and the vertical portion 103b is an exhaust duct, so that the foul odor sent from the exhaust fan V is exhausted from the lower end to the outside. Has become. The hollow part 4 ′ of the top plate 4, the intake duct 102, the exhaust fan V, and the band reel attaching member 103 constitute a deodorizing device H. The deodorizing effect can be further improved by installing a deodorizing canister in at least one of the hollow portion 4 'of the top plate 4, the intake duct 102, and the band reel mounting member 103 as necessary. Of course.

As described above, the band reel mounting member 1
Reference numeral 03 has not only a function as a support member of the band reel 6 but also a function as an exhaust duct for exhausting the exhaust from the exhaust fan V to the outside of the machine. next,
The details of the packing machine 1 of the illustrated example, particularly, the band binding mechanism will be described. 5 is an enlarged view of a main part of FIG. 2, and FIG.
It is a VI-VI arrow side view.

First, the band supply end processing means K will be described. The driving force from the cam driving stepping motor M ₁ is decelerated by the speed reducer 7 and transmitted to a cam shaft 14 supported by a rolling bearing 13. The camshaft 14 is provided between both side plates 12a and 12b of the frame 12, and is supported on the right side plate 12b by a rolling bearing 15.

As shown in FIG. 4, a heater cam 21, a front clamp cam 22, a press cam 23, a slide cam 24,
The rear clamp cam 25 and the middle slide cam 26 are fitted and inserted into the camshaft 14 and fixed by the key 16. Each of the cams 21 to 26 is
It is formed by laminating two plate members of the same shape punched and formed into a predetermined cam shape by a press. In the gap formed between the cams 21 to 26 adjacent to each other, a circular shape of the same shape made of plastic or the like, which is inserted through the camshaft 14 concentrically with the cams 21 to 26. Are interposed, and the spacers 17, 17,..
1 to 26 are fixed together by bolts 18, 18.

A front clamp 40 that moves up and down following the rotation of the front clamp cam 22 is provided between the left and right side plates 12a and 12b. The front clamp 40 is formed integrally with a spring-fitting insertion portion 41 having a gate-shaped cross-section, and can be rotatably locked to a pivot shaft 42 at the base end. Notch ring part 43a
Is formed of an elongated plate-shaped arm 43 formed with a head, and a head 45 fixed to the upper part of the spring fitting portion 41 with a bolt or the like. This front clamp 40
Is formed from an extruded material such as aluminum, and a guide hole 44 for guiding when supplying the band is formed in the head portion 45.

On the inner surfaces of the left and right legs of the gate-shaped cross section of the spring fitting insertion portion 41, the spring fitting insertion portion 41 extends laterally (rightward in FIG. 6) in parallel with the arm portion 43. Stiffened steel cam roller support member 51,
51 are attached. The cam roller support member 51,
A spring member 46 having a buffering action is fitted and inserted in an upper portion of 51, and a cam roller 52 that swings following the front clamp cam 22 is sandwiched in a lower portion of the spring member 46. Then, the base end portion 5 of the cam roller support member 51, which is pivotally fixed to the arm portion 43 of the front clamp 40.
1a, the cam roller 52 is attached to the front clamp cam 2;
A spring member 53 that urges the support plate 2 is pressed between the support member 11 and the spring member 53.

Similarly, the press 55 and the rear clamp 56 have substantially the same configuration as the front clamp 40, and cam rollers 57, 58 which swing following the press cam 23 and the rear clamp cam 25, respectively. (The details of the configuration are omitted.) A cutter member 59 for cutting the band is integrally fixed to the upper end side of the press 55.

Further, as shown in FIG.
A heater member 61, a slide member 62, and a middle slide member 63 are swingably disposed near the upper end portion between a and 12b. The heater member 61 includes a plate-shaped heater plate 64 positioned at an upper end portion, and a heater arm 65 fixed to a lower surface of the heater plate 64 and extending downward.
The heater arm 65 includes the side plates 12a, 1
It is pivotally supported by a pivot shaft 30 laid between 2b. The heater arm 65 is connected to the cam roller 7.
1 and is swingably attached to the heater cam 21 in conjunction with the heater cam 21.

Similarly, the slide member 62 has a plate-shaped slide table 67 fixed to an upper end of a slide arm 66 supported by the pivot shaft 30. The slide arm 66 is swingably attached to the slide cam 24 via a cam roller 72. Further, the middle slide member 63 is disposed on the side opposite to the arrangement of the heater member 61 and the slide member 62 with respect to the pivot shaft 30. That is, the middle slide member 63 is configured such that a middle slide 74 to which the limit switch L is fixed is fixed to an upper end of a middle slide arm 73 supported by the pivot shaft 30. The middle slide arm 73 is swingably attached to the middle slide cam 26 via a cam roller 75. The heater member 6
1. At the lower ends of the respective arms 65, 66, 73 of the slide member 62 and the middle slide member 63, the respective cam rollers 71, 72, 75 are attached to the heater cam 21, the slide cam 24, and the middle slide cam 26. Spring members 76, 76, 76 for urging to be pressed are interposed between the support plate 11 and the spring members 76, 76, 76.

Next, the band supplying / tightening means F will be described. Figure 7 is a longitudinal sectional view of the stepping motor M ₂ feed-back feed. The illustrated stepping motor M ₂ includes a motor main body 81 and a gear case 83 integrally fixed to the motor main body 81 on a protruding side of the output shaft 82. The gear case 8
3 through the rolling bearings 84 and 85 (FIG. 5).
The feed / back feed roller shaft 86 protruding from the left side of FIG. In the vicinity of the end of the feed / back feed roller shaft 86 in the gear case 83, a feed / back feed roller rotating gear 88 meshed with a tooth portion 87 engraved at the tip of the output shaft 82 is provided. On the other hand, at the outer end of the feed / back feed roller shaft 86, the feed / back feed roller 8 is fixed. In the vicinity of the periphery of the gear case 83, an attachment shaft 89 for fixing a band guide cover 98 attached to the outside of the front end of the feed / back feed roller 8 projects forward and is fitted. I have. The rocker roller 9 is always driven by the feeding means (not shown).
It is attached so as to be pressed against the back feed roller 8 (see FIG. 3).

As can be seen from FIG. 5, the band B wound on the band reel 6 is fed through the twist roller 92 and the idle roller 93 to the feed belt.
After passing through the pressure contact portion between the back feed roller 8 and the rocker roller 9, the inside of the tubular band guide member 94, the guide hole 44 of the front clamp 40, the gap between the press 55 and the middle slide 74, the rear clamp 56 And sequentially passes through the gap between the slide table 67 and the slide table 67 and exits from the top plate 4 to the outside. Next, the tip of the band B looped around the object to be packed in a loop shape (if a band arch is installed, a loop is formed through the inside of the band arch) is attached to the slide table 67. Is introduced into the packing machine 1 again through the band introduction port 95 formed on the side of the slide table 67, passes through the gap between the slide table 67 and the middle slide 74, and comes into contact with the limit switch L to complete the setting. Is configured.

Next, the operation of the packing machine according to one embodiment of the present invention will be described. First, the operation of the band binding mechanism will be described. First, the feed switch is operated by operating a start switch of a control device (not shown).
Operating the backfeed stepping motor M _2, the feed-back feed roller 8 starts to rotate feed the band B fed (supplied)
The band B is as described above, are caused to orbit at a distance around the object to be packed to stop the feed backfeed stepping motor M ₂ is brought into contact with the limit switch L, of the band B The set is completed.

Next, the cam driving stepping motor M ₁ is activated to rotate the front clamp cam 22, and the arm 43 is centered on the pivot shaft 42 by the operation of the cam roller 52 which is a follower thereof. Then, the front clamp 40 is swung upward, and the front end of the band B is clamped by the upper end surface of the front clamp 40 and the lower surface of the slide table 67. At the same time, the stop cam driving stepping motor M ₁ is the feed back feed stepping motor M ₂ is started and starts to rotate in the opposite tightening (backfeed) direction of the supply (feed) direction, Primary tightening is performed by high-speed, low-torque drive. Then, the band B comes into contact with the outer peripheral surface of the article to be packed, and a predetermined value of tension is applied to the band B.
, The feed / back feed stepping motor M ₂ is operated by a tension sensor (not shown) or the like.
The operation mode is automatically switched, and the low-speed / high-torque drive rotation is performed to perform secondary tightening. The operation of the cam driving stepping motor M ₁ is being made to retain the stop position through the primary and secondary tightening period.

[0028] Subsequently, the load tension of the band B by the secondary tightening reaches a set upper limit value of the tension sensor, the stepping motor M ₁ is restarted for the cam drive. Thereby, the rear clamp cam 25 operates, and the rear clamp 56 rises. The rear portion of the overlapping portion of the band B is clamped by the upper surface of the rear clamp 56 and the lower surface of the slide table 67.

Next, the heater arm 65 and the middle slide arm 73 for supporting and fixing the heater plate 64 and the middle slide 74, which are attached to each other in the width direction of the band B, are connected to the heater cam 21 and the middle slide arm 73. Via the cam rollers 71 and 75 which are operated following the rotational movement of the middle slide cam 26,
With the pivot shaft 30 as the center of rotation, rotation is performed so as to advance and retreat in conjunction with each other. That is, the direction in which the middle slide 74 retreats from the overlapping portion of the band B (rightward in FIG. 6).
The heater plate 64 is simultaneously slid in the same direction (rightward in FIG. 6) (guided by the middle slide 74). In this way, the heater plate 64 is attached to the middle slide 7.
Instead of the position 4 (see FIG. 5), the band B is inserted into the gap between the overlapping portions of the bands B which are arranged at a distance from each other in an up-and-down tension state. By the simultaneous squeezing pressure with the press 55 raised by the operation, the melt-press bonding of the opposing surface of the overlapping portion of the band B is performed. Here, the press 55 is first lightly pressed against the overlapping portion of the band B, and then is lowered once. At the same time, the heater plate 64 is pulled out of the band overlap portion (to the left as viewed in FIG. 6), and subsequently,
The press 55 rises again, and the cutter member 59 cuts the band B on the front clamp 40 side. Then, the press 55 is pressed strongly against the overlapping portion of the band B. In this state, the overlapping portion of the band is cooled for a predetermined time (for example, 1 to 1.7 seconds), and the press 55 is lowered. Incidentally, in the press 55 during the pressing operation of the first time was increased, as well as cooling period, the cam driving stepping motor M ₁ is held in the stop position.

Lastly, during the entire process, the slide table 67, which is held at a position substantially in the same horizontal plane as the upper surface of the top plate 4, includes the cam roller 72, which is a follower of the slide cam 24, and the cam roller 72, Slide arm 66
Through the above, the rotation is made in the retreating direction (left direction in FIG. 6) about the pivot shaft 30 as the rotation center. Next, the operation of the deodorizing device H will be described.

The foul-smelling smoke generated above the band supply end processing means K when the band B is melt-compressed is
The suction force of the exhaust fan V sucks the air from the end 106a of the notch 106 into the hollow portion 4 'of the central top plate 4c, passes through the intake duct 102 to the exhaust fan V, and then The air is discharged downward by the air blower V, and is discharged from the lower end of the vertical portion 103b to the outside of the machine through the horizontal portion 103a of the band reel mounting member 103.

Further, a case will be described in which the packing machine main body 10 constructed as described above is disassembled for transportation or the like. First, the band reel 6 is removed. At this time, if the thumb screws 104 are turned by hand and removed, the band reel mounting member 103 can be easily removed from the packing machine main body 10 without using a tool or the like while the band reel 6 is mounted. Can be removed. Next, the thumb screws 34, 3 of the legs 31, 31,.
By releasing the screwing of 4,..., The legs 31, 31,. In this way, the packing machine main body 10 is provided with a plurality of compact structural units that are advantageous during transportation or the like, that is, the legs 31, 31,
.. Can be disassembled into the band reel mounting member 103 on which the band reel 6 is mounted, and the main body housing unit 100 from which the legs 31, 31,. In order to assemble this structural unit, an operation reverse to the above-mentioned operation may be performed.

As described above, in the packing machine according to the present invention, the packing machine main body 10 can be divided into a plurality of structural units having an appropriate size by a minimum disassembling operation, and these are assembled together. Since a fixing member such as a thumb screw which does not require a tool is used, assembly and disassembly can be performed quickly and easily. Also, since the fixing members 34, 34,... Of the legs 31, 31,... Are tightened from the inside of the packing machine main body 10, there is no protruding portion, so that contact with the body and other members is eliminated. Not only can be prevented from being damaged, but also the appearance is not impaired.

Although one embodiment of the present invention has been described in detail, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the present invention described in the claims for utility model registration. Design changes can be made. For example, in the illustrated example, the stepping motors M ₁ and M _{1 are} used as motors for driving the cam and for feeding and back-feeding.
_{Although 2} is used, it goes without saying that another motor may be used.

[0035]

As will be understood from the above description, according to the present invention, the number of parts can be reduced and the whole can be configured simply and inexpensively, and the assembling and disassembling operations can be performed easily. In addition, maintenance work such as component replacement can be easily performed, space can be saved, and the appearance can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a packing machine according to an embodiment of the present invention, in which a top plate is removed to show the entire inside of the packing machine.

FIG. 2 is a schematic front view of a cutaway main part of the packing machine shown in FIG. 1;

FIG. 3 is a schematic side view taken along the line III-III of FIG. 2;

FIG. 4 is an enlarged perspective view of an IV part in FIG. 1;

FIG. 5 is an enlarged view of a main part of FIG. 2;

FIG. 6 is a side view taken along the line VI-VI in FIG. 5;

FIG. 7 is a view showing a feeder provided to a packing machine according to an embodiment of the present invention.
FIG. _{5 is} a longitudinal sectional view of a stepping motor M2 for back feed.

[Explanation of symbols]

 B band F band supply / tightening means H deodorizer K band supply end processing means V air blower 1 packing machine 4 top plate 6 band reel 10 packing machine main body 31 structural unit (leg) 34 fixing member (thumb screw) 100 Structural unit (main body housing) 103 Band reel mounting member 104 Fixing member (thumb screw)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-65803 (JP, U) JP-A-40771 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65B 13/00-13/34 B65B 27/00-27/12

Claims (1)

(57) [Scope of request for utility model registration] 1. A top plate (4) on an upper surface and legs (31, 3) at four corners.
A band reel (6) supported by a band reel mounting member (103) is housed in a box-shaped packing machine body (10) provided with the band reel (6) and the band reel (6). A binding mechanism (F, K) for performing operations such as feeding, tightening, gripping, pressing, melting, cutting, and the like of the band (B) fed from the band reel (6) is arranged between the band plate (4) and the top plate (4). The packing machine (1) comprises a plurality of structural units (31, 31, 3) which can be disassembled and assembled without requiring tools.
1, 100, 6, 103), and the band reel mounting member (103) is formed of an L-shaped angle member, supports the band reel (6) in a cantilever manner, and is fixed to a fixing member (such as a thumb screw). 104, 104), the packing machine body (1).
A packing machine fixed to 0).