JPH054615A - Device for pasting in packing machine for bulky object - Google Patents

Abstract

PURPOSE:To optimize the position of pasting on packing paper independent of the diameter of the work. CONSTITUTION:There are provided a forwarding conveyor 22, a clamp unit 36, a pasting unit 32, and a swing roller 33b. When packing paper is cut off at a length from the loose end, the forward end projecting from the tread W, is clamped by the clamp unit 34 beforehand. After cutting packing paper P by a specified length, the clamp unit 34 is released and the work W is moved by the use of the forwarding conveyor 22 and the swing roller 33b; then the forward end of the packing paper P can be brought to a fixed position and paste A can be applied at an optimal position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glue for a thick packaging machine which is useful for packaging a thick workpiece, which is obtained by winding various flexible sheet-like materials into a cylindrical shape, with a strong wrapping paper. Related device.

[0002]

2. Description of the Related Art Textiles, flexible sheet-like materials such as paper and flooring materials are rolled up in a cylindrical shape, transported and stored. Therefore, a packaging machine for efficiently and automatically packaging these thick workpieces has been developed.

In order to wrap a thick work piece with a strong wrapping paper such as kraft paper, first, the wrapping paper expanded in a plane is held vertically, and the work is horizontally placed across the wrapping paper. When moved, the wrapping paper bends so as to cover almost the half circumference of the work.After that, the wrapping paper is cut into a predetermined length, the wrapping paper is wrapped around the remaining half circumference of the work, and then both ends of the wrapping paper are bonded. do it. When the work is moved horizontally, the lower end of the wrapping paper is clamped and a certain tension is applied upward. Further, the work to be moved should be supported horizontally as a whole and parallel to the wrapping paper.

In such a packaging machine, a gluing device is used for wrapping a wrapping paper around a work in a tubular shape and then adhering both ends thereof. The conventional glue pasting device is provided with a glue pasting unit that moves in the width direction of the wrapping paper while ejecting the glue and sticks the glue in a streak shape toward a predetermined position at one end of the wrapping paper, and then wraps the wrapping paper. To glue. At this time, the glue must be attached at an optimum fixed distance from the tip of the wrapping paper. This is because if the distance from the tip is too large, extra wrapping paper will remain on the surface of the packaged work, and the finish will be unsatisfactory, while if it is too small, adhesion will not be possible.

[0005]

According to the prior art, when the diameter of the work is changed, it is necessary to re-adjust the position where the glue is adhered to, so that the operation is extremely complicated. was there. In other words, the glue attachment position is determined by the relative relationship between the installation position of the glue unit and the position of one tip of the wrapping paper.In the former, the diameter of the work fluctuates because it is generally fixed. This is because if the required length of the wrapping paper fluctuates, the position of the leading end of the wrapping paper needs to be readjusted accordingly.

Therefore, in view of the problems of the prior art, an object of the present invention is to combine a transfer conveyor, a clamp unit, a gluing unit, and a swing roller so that even if the diameter of the work varies, An object of the present invention is to provide a pasting device in a thick packaging machine capable of optimally maintaining the adhering position of the item without adjustment.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the structure of the present invention comprises a transfer conveyor for transferring a cylindrical work in a direction perpendicular to the axis, and a transfer conveyor provided at the upstream end of the transfer conveyor. A clamp unit that clamps the tip of the wrapping paper on the side protruding from the grounding part, a glue unit that is arranged above the transfer conveyor and moves in the width direction of the wrapping paper, and a work on the transfer conveyor through the wrapping paper. Is equipped with a positively driven swing roller that pushes in the axial direction,
The gist of the invention is that the transfer conveyor and the swing roller are driven at the same time to optimize the gluing position of the gluing unit.

The clamp unit may be a combination of a clamper for firmly clamping the wrapping paper and a gripping mechanism for lightly clamping the wrapping paper, and the swing roller may be provided with a downward air nozzle.

[0009]

With this structure, when the work is placed on the transfer conveyor with the wrapping paper having a predetermined length enough to go around the work, the work is placed on the conveyor.
The tip of the wrapping paper on the side protruding from the grounding portion of the work can be firmly clamped, and at that time, the other end of the wrapping paper makes a round around the work and is a free end side. on the other hand,
Since the swing roller presses the work from above the work via the wrapping paper, the wrapping paper is in a state of being restrained with respect to the surface of the work at least in the range from the ground contact portion of the work to the swing roller.

In this state, the clamp unit is released,
If the work is moved to the downstream side of the transfer conveyor by driving the transfer conveyor and the swing roller at the same time, the wrapping paper becomes
The tip portion on the side projecting from the grounding portion is pulled out from the clamp unit and extends in a plane shape toward the upstream side of the transfer conveyor. At this time, the position of the leading end of the wrapping paper clamped by the clamp unit before pulling out is constant regardless of the diameter of the work, and therefore the position of the leading end is always set to a fixed position by the subsequent pulling out. It is possible. Therefore, the glued position by the glued unit can always be optimized regardless of the diameter of the work.

When the clamp unit is composed of the combination of the clamper and the gripping mechanism, the gripping mechanism still clamps the wrapping paper lightly even after releasing the clamper. Therefore, the wrapping paper is clamped by the transfer conveyor and the swing roller. Tension can be applied to the wrapping paper when it is pulled out from the unit, and therefore, there is no fear that unnecessary creases are generated in the wrapping paper or the position of the tip end after the wrapping is varied.

If the swing roller is equipped with an air nozzle,
The air nozzle can press the free end side of the wrapping paper against the surface of the work by ejecting air,
It is possible to effectively prevent the glue from accidentally adhering to the free end side when the glue is applied.

[0013]

Embodiments Embodiments will be described below with reference to the drawings.

The pasting device in the thick packaging machine mainly comprises the transfer conveyor 22, the clamp unit 34, the pasting unit 32, and the swing roller 33b (FIG. 1).

The thick packaging machine is equipped with a pusher device 10, a carry-in conveyor 21, and a carry-out conveyor 2 in addition to the gluing device.
3 and a cutter unit 31, and the swing roller 3
3b is included in the swing roller unit 33.

The bare columnar work W is carried by the carry-in conveyor 2
1 is carried in in the direction of arrow A in FIG. 2, is moved in the direction of arrow B by the pusher device 10, the transfer conveyor 22, and the slope 23a, and is carried out in the direction of arrow C by the carry-out conveyor 23. Further, when the work W is transferred from the carry-in conveyor 21 to the transfer conveyor 22, the entire circumference of the work W is wrapped with the wrapping paper P on the transfer conveyor 22. The wrapping paper P is unwound from the paper roll P1 and hangs vertically between the carry-in conveyor 21 and the transfer conveyor 22.

The pusher device 10 is disposed on one side of the carry-in conveyor 21 and has a swing plate 12 attached to the front surface of the frame 11 (FIG. 3). The frame 11 is formed by bending a plate material into a U-shaped cross section to form a horizontally long rectangle, and has gentle slopes 11a and 11a at both front end portions thereof. A long cylinder 13 is horizontally connected to the back surface of the frame 11, and guide rods 14 and 14 are connected in parallel with the cylinder 13. However, each guide rod 14 has a guide block 14a, 1
4a slidably passing through the guide blocks 14a, 14
The cylinder 13 is fixed to a machine frame (not shown).

The oscillating plate 12 is a horizontally long plate member whose lower portion is curved forward, and is swingably attached to the frame 11 via hinges 12a, 12a. On the other hand, at both ends of the frame 11, the short cylinder 1
5 and 15 are mounted, and the rods of the cylinders 15 and 15 penetrate the frame 11 to provide cushioning materials 15a and 15a.
The rocking plate 12 can be driven forward via the. The lower end of the rocking plate 12 hangs very close to the upper surface of the carry-in conveyor 21 (FIG. 1).

The transfer conveyor 22 is formed by arranging a plurality of unit conveyors 22a, 22a ... In parallel (FIGS. 1 and 2), and is arranged on the opposite side of the pusher device 10 across the carry-in conveyor 21. The transfer conveyor 22 can convey the work W in a direction perpendicular to the axis. The carry-out conveyor 23 is connected to the downstream side of the transfer conveyor 22 via a slope 23a. Transfer conveyor 22 of carry-in conveyor 21
On the upstream side of the transfer conveyor 22, brackets 21a and 22b are provided so as to smoothly move the work W from the carry-in conveyor 21 to the transfer conveyor 22, respectively. A slit S that allows the wrapping paper P to be drawn in is formed between the brackets 21a and 22b.

The cutter unit 31 is arranged directly above the slit S.

The cutter unit 31 is incorporated in a pair of unit frames 31a1 and 31a2 arranged on both sides of the wrapping paper P. Unit frames 31a1 and 31a
Both ends of each of the two are integrally connected, and can be moved up and down as a whole along guide rods 31b, 31b, ... Which are arranged in the vertical direction via a drive mechanism (not shown).

The cutter unit 31 has a paper clamp 31d driven by a driving source 31c such as a short-stroke cylinder or a solenoid, and a cutter blade 31e. The paper clamp 31d is incorporated in one unit frame 31a1 and the other. The wrapping paper P can be clamped between the unit frame 31a2 and the unit frame 31a2 and clamped. Further, the cutter blade 31e is the unit frame 31a.
2 is provided on the lower surface of a moving block 31f assembled obliquely downward, and the moving block 31f is connected to a belt mechanism (not shown) to form a unit frame 31a2.
Can be reciprocated in the longitudinal direction, that is, in the width direction of the wrapping paper P.

The gluing unit 32 includes a transfer conveyor 22.
Is disposed above the upstream end of the. Glued unit 32
Is attached to the lower end of a long hanging bracket 32b and has a downwardly facing nozzle 32a. Further, the bracket 32b is provided with the horizontal guide rods 32c, 32.
It is movably supported by c (FIG. 4), and the motor 32d1 and the pulley 32d2 are connected via the connecting member 32b1.
, 32d2 are connected to an endless timing belt 32d. Therefore, the glued unit 3
2 can reciprocate in the width direction of the wrapping paper P along the guide rods 32c and 32c by driving the motor 32d1 in the forward and reverse directions.

A hot melt adhesive, for example, can be jetted from the nozzle 32a, if necessary.
That is, the glue hose 32e is connected to the glue unit 32 via an on-off valve (not shown), and the glue hose 32
It is assumed that e is connected to a glue adjusting unit (not shown) via a bendable hose guide 32e1.

The swing roller unit 33 includes swinging arms 33a, 33a arranged on both sides of the transfer conveyor 22.
And a swing roller 33b pivotally attached to the tip ends of the swing arms 33a, 33a (FIGS. 1 and 2), the swing roller 33b can be positively driven by a motor 33c (FIG. 5). The rocking arms 33a, 33a are connected via a connecting beam 33a1 and can be rocked up and down by a single cylinder 33a2. In addition, the swing arms 33a, 33a include ropes 33a3,
Counterweights 33a5 and 33a5 are connected via 33a3 and sheaves 33a4 and 33a4. The swing roller 33b can press the work W on the transfer conveyor 22 in the axial direction when swinging the swing arms 33a, 33a downward.

From the top, downward air nozzles 33d, 33d ... Are attached to the swing roller 33b.
The air nozzles 33d, 33d ... Are connected to a header pipe 33d1 fixed to the connecting beam 33a1, and the header pipe 33d1 is connected to an air source via an air hose (not shown).

The clamp unit 34 is used for the carry-in conveyor 2
1. It is arranged below the intermediate portion of the transfer conveyor 22 (FIGS. 1 and 6). The clamp unit 34 is provided with a plurality of clampers 34b, 34b, ... upwardly arranged on a beam 34a which is guided by guide rods 34a1 and 34a1 and is vertically driven by a cylinder 34a2.

The clampers 34b, 34b ... Can firmly clamp the lower end of the wrapping paper P by opening and closing the grips at the tips. In addition, the clampers 34b, 34b
Can extend and retract the cylinder 34a2 so that the tip end thereof protrudes above the brackets 21a and 22b (two-dot chain line in FIG. 7), and can be sunk below the brackets 21a and 22b (FIG. 1). . Therefore, in the portions of the brackets 21a, 22b corresponding to the clampers 34b, 34b ..., The slits S are partially expanded so that the clampers 34b, 34b.

The clamp unit 34 includes the bracket 21.
It has another gripping mechanism by a and an L-shaped member 34c connected to the beam 34a (FIG. 7). However, a plurality of brackets 21a are arranged in the longitudinal direction of the beam 34a (FIG. 6), and an L-shaped member 34c is pivotally attached to the side surface of the bracket 21a so as to be vertically rotatable. (Fig. 7). One end of the L-shaped member 34c has screw rods 34d and 34d, the lengths of which can be adjusted via a screw coupling 34d1, and an auxiliary bracket 34d2.
Is connected to the side surface of the beam 34a through. Therefore, when the beam 34a is moved up and down and the clampers 34b, 34b ... Are moved up and down, the L-shaped member 34c is opened and closed between the front end face of the bracket 21a (solid line and two-dot chain line in FIG. 7) and closed. In this case, the lower end of the wrapping paper P can be lightly clamped.

The paper roll P1 which is the supply source of the wrapping paper P is
Above the pusher device 10, the support rollers 41, 4
It is rotatably supported via 1 (Fig. 1).

The wrapping paper P is guided to the cutter unit 31 via the guide roller 42, the supply roller 43, the dancer roller 44, and the guide rollers 45, 45, passes between the unit frames 31a1 and 31a2 from the top to the bottom, and passes vertically. The clamper 34b of the clamp unit 34 at the lower end,
34b ... firmly clamps and stands by. At this time, the clampers 34b, 34b ...
It is lowered below a and 22b. Therefore, the wrapping paper P
The lower end of the bracket 21a, through the slit S,
It is pulled down to below 22b, and is also lightly clamped by the L-shaped member 34c of the clamp unit 34.

The supply roller 43 includes a pusher roller 43.
a is attached, and the supply roller 43 is intermittently driven as needed, and a predetermined amount of the wrapping paper P can be pulled out from the paper roll P1. Further, the dancer roller 44 moves up and down to move from the supply roller 43 to the clamp unit 34.
It is possible to apply a predetermined constant tension to the wrapping paper P during the period.

Incidentally, sensors PS1 and PS2 for detecting the work W are arranged on the upstream side of the transfer conveyor 22.

The operation of the thick packaging machine is as follows.

When the work W is carried in by the carry-in conveyor 21 and the work W stops in front of the pusher device 10 (FIG. 8), the cylinder 13 is extended and the frame 11 is advanced. At this time, the lower end of the wrapping paper P is clamped by the clamper 34.
It is clamped by b, 34b ... And hung vertically between the carry-in conveyor 21 and the transfer conveyor 22. The cutter unit 31 is retracted upward, and the glue unit 32 is moved to one side of the transfer conveyor 22 (FIG. 2).

The pusher device 10 extends the cylinder 13 and advances the frame 11 to move the swing plate 1
The work W can be extruded to the upstream end of the transfer conveyor 22 via 2 and moved horizontally (two-dot chain line in FIG. 8). At this time, the wrapping paper P is bent so as to cover the work W so as to cover almost half the circumference on the opposite side of the pusher device 10, and can be tightly attached to the surface of the work W without wrinkles. The wrapping paper P has a clamper 3 at the lower end.
This is because they are clamped by 4b, 34b ... And a constant tension by the dancer roller 44 is applied above.

When the work W is horizontally moved to a predetermined position, the swing arm 33a of the swing roller unit 33,
33a is driven downward (two-dot chain line in the same figure), and the wrapping paper P is sandwiched between the swing roller 33b and the work W.
Press on.

Subsequently, the work W is further advanced to position the work W (FIG. 9). That is, the motor 3
By 3c, the swing roller 33b is driven in the direction of arrow K1 in the figure, and the pushing force of the pusher device 10 is used to move the work W somewhat to the downstream side of the transfer conveyor 22. At this time, the work W is moved to a position where it passes the position of the sensor PS1 on the upstream side and does not pass the position of the sensor PS2 on the downstream side, so that the work W is positioned at a fixed position, and from the grounding portion W1 to the clamper 34b, 34
The length of the wrapping paper P up to b ... can be set to a predetermined length. This is because the clampers 34b, 34b ... Clamp the tip of the wrapping paper P on the side protruding from the ground portion W1 to fix the position of the tip.

After the positioning is completed, the pusher device 10 is temporarily retracted.

Next, when the cutter unit 31 is lowered (FIG. 10), the wrapping paper P is placed on one unit frame 3
It is pushed down by 1a2 and bent so as to cross its lower surface. Therefore, in this state, by closing the paper clamp 31d and moving the cutter blade 31e in the width direction of the wrapping paper P, the cutter blade 31e can cut the wrapping paper P into a predetermined length.

When the cutting of the wrapping paper P is completed, the cutter unit 31 is retracted upward (FIG. 11). At this time,
Since the wrapping paper P on the side continuous with the paper roll P1 is clamped by the paper clamp 31d, it can be protruded by a predetermined length from the lower surfaces of the unit frames 31a1 and 31a2 and retracted upward together with the cutter unit 31. .

On the other hand, the wrapping paper P on the side of the work W opens the clampers 34b, 34b ... And releases the leading end on the side projecting from the grounding portion W1. After that, the transfer conveyor 22 and the swing roller 33b are driven in the directions of arrows K2 and K3 in FIG. 11, respectively, and the work W is slightly moved to the downstream side of the transfer conveyor 22, and the packages released from the clampers 34b, 34b. The leading end of the paper P slips out of the slit S, extends on the bracket 22b from the grounding portion W1 of the work W to a substantially constant length, and the position of the leading end is set to the bracket 22b.
It can be moved to a predetermined position above. However, at this time, the front end of the wrapping paper P is lightly clamped by the L-shaped member 34c even when the clampers 34b, 34b ... Are opened, and therefore, when the work W is moved, the wrapping paper P is L-shaped. It will be pulled out from the slit S against the gripping force of the member 34c.

Subsequently, the wrapping paper P is pasted by the pasting unit 32. That is, first, air is jetted from the air nozzles 33d, 33d, ... Of the swing roller unit 33 to press the free end side of the wrapping paper P against the work W, and then the paste unit 32 is moved to the guide rod 3.
Move along 2c and 32c. Glued unit 32
If the glue is ejected from the nozzle 32a in the middle of the movement process of No. 2, the glue A can be attached in a streak shape over substantially the entire width of the wrapping paper P extending onto the bracket 22b. Here, the glued position by the glued unit 32 is
It depends on the position of the tip of the wrapping paper P, and the position of the tip is
Since it is adjusted to the predetermined position in the previous step, the glued position is always proper.

Then, the pusher device 10 is advanced again (FIG. 12). At this time, the rocking plate 12 is
15 is extended and rocked forward. Therefore, the free end side of the wrapping paper P is
The work W can be deeply wound toward the ground contact portion W1. Therefore, the transfer conveyor 22 and the swing roller 33b
When the work W is rotated in the directions of arrows K4 and K3 in the same figure and the work W is rotated in the direction of arrow K4, the wrapping paper P is wrapped tightly around the entire circumference of the work W with the free end side folded inward. , Glue A can be bonded in a tubular shape (Fig. 1
3). Therefore, after that, if the swing roller 33b is retracted upward, the packaged work W can be discharged to the downstream side of the transfer conveyor 22 (two-dot chain line in the figure), and the discharged work W is It may be conveyed to the next step through the slope 23a and the carry-out conveyor 23.

On the other hand, when the pusher device 10 is retracted to its original position and the cutter unit 31 is lowered again (as shown in the figure), the paper clamp 31d clamps the upper wrapping paper P for the next work. You can pull it down as it is. Therefore, the cylinder 34a2 causes the clampers 34b, 34b ... To project above the brackets 21a, 22b, and the clampers 34b, 34b.
Since the clampers 34b, 34b ... Can firmly clamp the lower end of the wrapping paper P, subsequently, the paper clamp 31d is released to retract the cutter unit 31 upward,
The clampers 34b, 34b ... Are attached to the brackets 21a, 22b.
If it is retracted below, the lower end of the wrapping paper P can be drawn below the brackets 21a and 22b through the slit S (FIG. 1) to return to the initial standby state.

In the same manner, the processing of the next work W may be continued.

The cutter blade 31 of the cutter unit 31
e has a double-edged shape, and the wrapping paper P can be cut in either case when the moving block 31f is moved left and right. Therefore, it is sufficient for the cutter blade 31e to move with respect to each work W in either one of the left and right directions. The same applies to the glued unit 32.
This is because the glue unit 32 can adhere the glue A on the wrapping paper P in a streak shape when moving to the left or right.

The above description can be applied as it is even if the diameter of the work W changes. That is, in this thick packaging machine, the wrapping paper P on the side of the work W always has the position of the tip on the side projecting from the grounding portion W1 and the length on the free end side regardless of the diameter of the work W. It can be automatically controlled to be optimal and therefore
Even if the diameter of the work W changes, it can be operated without adjustment.

[0049]

As described above, according to the present invention, the transfer conveyor, the clamp unit disposed at the upstream end of the transfer conveyor, the glue unit disposed above the transfer conveyor, and the transfer conveyor By combining it with a swing roller that presses the work in the axial direction, the wrapping paper that is cut around the work to a predetermined length is
The tip on the side projecting from the grounding part is clamped in advance by a clamp unit, and then the clamp unit is released to move the workpiece, so that the tip position is always set to a fixed position regardless of the diameter of the workpiece. Therefore, even if the diameter of the work fluctuates, there is an extremely excellent effect that the glue adhesion position can be optimized without adjustment.

[Brief description of drawings]

FIG. 1 Schematic diagram of the overall concept of the machine

2 is an explanatory plan view of FIG.

FIG. 3 is a perspective view of a pusher device.

FIG. 4 is an explanatory perspective view showing a drive system of the glued unit.

FIG. 5 is an explanatory perspective view of a swing roller unit.

FIG. 6 is a view corresponding to the arrow X in FIG.

FIG. 7 is an explanatory diagram corresponding to the line YY in FIG.

[Fig. 8] Operation explanatory diagram (1)

[Fig. 9] Operation explanatory diagram (2)

FIG. 10 is an operation explanatory view (3)

FIG. 11 is an operation explanatory diagram (4)

[Fig. 12] Operation explanatory diagram (5)

FIG. 13 is an operation explanatory diagram (6)

[Explanation of symbols]

W ... work W1 ... Grounding section P ... Wrapping paper 22 ... Transfer conveyor 32 ... Glued unit 33b ... Swing roller 34 ... Clamp unit 34b ... clamper

Claims (3)

[Claims] 1. A transfer conveyor for transferring a cylindrical work in a direction perpendicular to an axis, and a transfer conveyor disposed at an upstream end of the transfer conveyor.
A clamp unit that clamps the tip of the wrapping paper on the side protruding from the grounding portion of the work, a glue unit that is arranged above the transfer conveyor and moves in the width direction of the wrapping paper,
A wrapping paper is provided, and a swing roller for positively driving the work on the transfer conveyor in an axial direction is provided,
The pasting device for a thick packaging machine, wherein the transfer conveyor and the swing roller are simultaneously driven to optimize the pasting position of the pasting unit. 2. The clamp unit is composed of a combination of a clamper that firmly clamps the wrapping paper and a gripping mechanism that lightly clamps the wrapping paper.
Paste device for the thick packaging machine described. 3. The swing roller comprises a downward air nozzle.
Paste device for the thick packaging machine described.