JPH08217010A - Driving force transmitting mechanism of arch type packing machine - Google Patents

Abstract

PURPOSE: To obtain a speed reducing mechanism which causes an arch type packing machine to be reduced in breadth from the front side to the rear side by making a driving mechanism for roller and seal units of the packing machine small-sized, and rationally transmits driving forces to the shafts of both roller and seal units. CONSTITUTION: In an arch type packing machine, roller shafts of a roller unit and a driving cam shaft of a seal unit are perpendicularly intersect each other. A large diameter pulley 33 of a motor 31 drives a group of rollers arranged parallel with the motor 31 and a small diameter pulley 34 of the motor 31 is connected to an input shaft of a cross double output shaft type speed reducer. An output shaft 53 of the speed reducer drives a return roller 39 and the other output shaft that perpendicularly intersects the shaft 51 drives a driving cam shaft of the seal unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for operating various heads in an arch type packing machine for fixing a band wound around an object to be packed with a seal unit and cutting the seal. The drive shaft of the return roller, which is the main roller of the feed roller unit for winding, pulling back and tightening the band, is driven by the same motor. The present invention relates to a driving force transmission mechanism.

[0002]

2. Description of the Related Art In a conventional general arch type packing machine, a roller unit for feeding a band to an arch part and for performing primary tightening and secondary tightening is generally a return roller.
The axis of the la is usually provided in a direction orthogonal to the arch, which comprises the groove of the arch guide provided in the arch and the shape of the flat band fed in the groove. This is rational in relation to the shape of the roller for feeding the flat band by the roller group.

On the other hand, in the packing device of this type, due to the structure of the seal unit, a compression head, a gripper, etc. pressed against the anvil are inevitably provided below the arch in parallel with the arch. Similarly, the control cam group is arranged in parallel with the arch, and the cam shaft for driving the cam group is also arranged in parallel with the arch.

On the other hand, in the arch type packing machine of this type, since the arch surrounds the object to be packed, the packing machine body is in a direction parallel to the arch. It is unavoidable to have a structure with large dimensions, but in order to make the packing machine itself as small as possible,
It is desirable to avoid wasted dimensions as much as possible in the direction perpendicular to the chi.

Therefore, in the conventional arch type packing machine, in order to drive the above-mentioned orthogonal cam shafts and the return roller shafts, two shafts are provided as separate drive means. Using a motor etc. to drive each individually,
The separate drive mechanisms are controlled by special control means so as to synchronize them.

[0006]

DISCLOSURE OF THE INVENTION The invention of the present application increases the size of the apparatus and increases the cost due to the control means for synchronizing the cams, which are caused by providing separate drive mechanisms in the conventional packing machine as described above. Avoid, simple structure,
An object of the present invention is to provide a driving mechanism that drives a downsized roller unit and a cam group.

[0007]

In order to solve the above problems, in the arch type packing machine of the present invention, one mower is used as a power source for driving the mechanism of each part of the packing machine. A dual output shaft type deceleration with a drive shaft of a return roller, which is a main roller for band tightening, and a drive cam shaft of a seal unit, which is orthogonal to the drive shaft, are connected to the same motor. By connecting to each orthogonal output shaft of the machine,
It achieves that purpose.

[0008]

A small pulley provided on the output shaft of the motor and a pulley on the input shaft side of the reduction gear are connected by a belt, and one output shaft of the orthogonal two-output shaft reduction gear is connected to the retarder. A return roller is connected to the output shaft through a one-way clutch by making the output shaft coincide with the roller shaft, and the other output shaft of the orthogonal dual output shaft type speed reducer is arranged in parallel with the cam shaft, Since the cam shaft is driven by appropriately connecting the parallel output shaft and the cam shaft with a pulley and a belt, the two orthogonal drive shafts are driven by a simple motor with a simple device. As a matter of course, other rollers and other actuating mechanisms can be easily driven synchronously without providing a special control mechanism, and there is no need to provide a plurality of motors, speed reducers, etc. Obtaining a miniaturized arch type packing machine A.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a speed reduction mechanism 50, which is a feature of the present invention, and a return roller 39 driven by a drive mechanism,
The camshaft 64 and their related configurations are clearly shown in FIGS. 3, 4, and 5, respectively.

First, the outline of the structure of the packing machine of the present invention will be described with reference to embodiments. The packing machine body 10 includes a band supply unit 20, a roller unit 30, and a speed reduction mechanism section 5.
0, a seal unit 60, and an arch 70.
The band supply unit 20 includes a band reel 21, and the band wound around the band reel 21 is sent to the roller unit 30 through the guide rollers 22 and 23. The chamber 24 temporarily stores the band B that is sent to the bundling unit at a high speed for packing, and also temporarily stores the pulled back band when the band wound around the article A is pulled back and bound. It is a storage room. The structure of the roller unit 30 is particularly clear in FIGS. On the other hand, the motor 31
A pair of feed rollers 37, 38, a high-speed pullback roller 40, and a tension roller via a belt with a large diameter pulley 33.
Drive the laser 42.

The return roller 39, which plays a central role in the bundling operation by the band, is driven by the small-diameter pulley 34 of the motor 31 via the belt, as is apparent from FIGS. Input shaft 52 of the orthogonal dual output shaft type speed reducer 51
Is connected via a one-way clutch to a first output shaft 53 which is parallel to.

Further, a seal unit 60 is provided substantially in the center of the packing machine main body 10, and the band fed by the roller unit is wrapped around the article A to be packed A band guide 71 of an arch 70. After winding through the
After being tightened and bound by a la 39, a pullback roller 40, a tightening rocker roller 41 and the like, they are tied and bound by a compression head 61 of a seal unit.

Next, details of the driving force transmission mechanism according to the characteristic components of the present invention will be described. In FIG. 3, the motor 3
The large-diameter pulley 33 driven by 1 drives the feed roller 37, the tension roller 42, and the high-speed pullback roller 40 via the belt. On the other hand, the small diameter pulley 34 is an input shaft pulley provided on the input shaft 52 of the speed reducer 51 via a belt.
It is connected so as to drive the battery 35.

In the embodiment of FIG. 3, the packaging machine body 10
A motor 31 having an output shaft in a direction orthogonal to the arch 70 and a reduction mechanism 50 having an input shaft 52 in a direction orthogonal to the arch 70 are juxtaposed in the machine frame. ,
As described above, the pulley 34 and the pulley 35 are belted. The speed reduction mechanism section 50 is composed of an orthogonal dual output shaft type speed reducer 51, and its two output shafts 53 and 54 are orthogonal to each other as shown in the drawing.

Then, one output shaft, that is, the input shaft 5
A return roller 39 is directly mounted on the output shaft 53 parallel to the shaft 2 via a one-way clutch.
The other output shaft, that is, the input shaft 52, is orthogonal to the arch 70.
The second output shaft 54 that extends in parallel with the first drive shaft 6 is provided with a pulley 55 and is parallel to the second output shaft 54.
The belt 66 is attached to the pulley 66 provided on the No. 4 belt.

What is important here is that, in general, in an arch type packing machine, when the band is wound around the article to be packed through the band guide in the arch, the packing machine main body is used because of the structure of the band guide. That is, it becomes larger in the lateral direction, that is, in the arch direction. However, it is desirable to minimize the width of the body in the direction orthogonal to the arch, ie, the front-back direction.

Therefore, when the drive mechanism according to the present invention is adopted, the drive motor and the seal unit, especially the seal unit thereof, are adopted.
It is possible to reasonably connect and drive the arrangement position and direction of the shaft that drives the le cam, reduce the width in the front-rear direction of the packing machine body, and drive the roller unit for band feeding operation. And a band for band binding
Since the cam shaft driving means of the ruler unit can be driven by one motor, this contributes greatly to the downsizing of the packing machine, the reduction of the number of constituent parts, and the cost reduction in combination with the arrangement of the driving mechanism.

FIG. 6 shows a swinging mechanism which is a synchronous operation mechanism for alternately bringing the pullback roller 40 and the band feed rocker roller 38, which are synchronously driven by the cam 67, into and out of contact with the return roller 39 by pressure. The moving member is shown. FIG. 7 shows an outline of a seal unit in the packing machine of the present invention. A cam group 65 for synchronously driving the grippers 62, 63 and the compression head 61 is driven by a seal cam shaft 64, and the cam shafts are also driven. Is provided with a cam 67.

The pullback roller 40 and the feed rocker roller 38 are respectively a swing lever 44 and a drive lever 46.
And is synchronously controlled by the cam 67 via the hook 47. Therefore, when the feeding of the band B to the band guide 71 is completed, the rocker roller 3 continues.
At the same time as 8 is separated, the pullback roller 40 is pressed against the return roller 39 to perform the primary high speed tightening. After that, as shown in FIGS. 4 and 5, the secondary tightening rocker roller 41 is supported by the arm driven by the solenoid S or the like, so that the secondary tightening rocker roller 41 is pressed against the return roller 39 and is strong at a low speed. The tightening is done.

[0020]

The first effect of the present invention is that the band feed operation roller group and the camshaft of the seal unit can be driven by using one motor. A second effect is that in a packing machine of a type in which the respective axial directions of the band operation roller and the direction of the seal unit drive cam shaft are orthogonal to each other, both orthogonal shafts are provided with a single reducer by a compact reducer. It can be driven only. A further important effect is that the front-rear width of the machine can be extremely effectively reduced in size in an arch type packing machine main body having a seal unit drive cam shaft orthogonal to each roller shaft.

[0021]

[Brief description of drawings]

FIG. 1 is a schematic front view of an arch type packing machine of the present invention.

FIG. 2 is a plan view of the arch type packing machine shown in FIG.

FIG. 3 is an enlarged plan view of a driving force transmission mechanism portion that is a characteristic portion of the present invention.

FIG. 4 is a schematic front view of a roller unit portion and a seal unit drive cam portion of FIG.

5 is an explanatory view of a roller unit portion of the packing machine shown in FIG.

FIG. 6 is a side view of a timing mechanism of a seal unit cam drive shaft and a roller unit.

FIG. 7 is an enlarged front view of a seal unit portion.

[0022]

[Explanation of symbols]

 10 Packing Machine Main Body 20 Band Supply Unit 30 Roller Unit 31 Motor 33 Large Diameter Pulley 34 Small Diameter Pulley 37 Feed Roller 39 Return Roller 40 Pullback Roller 41 Tightening Roller 50 Reduction Mechanism 51 Orthogonal Dual Output Axis Reduction Gear 52 Input Axis 53 Output Axis 54 Output Shaft 64 Cam Shaft 65 Cam 66 Cam Shaft Pulley 71 Band Guide

Claims (1)

[Claims] 1. A seal shaft for driving a band seal unit of an arch type packing machine is provided in parallel with the arch, and a band tightening return roller of a band feed operation roller unit is provided. A drive mechanism of a packing machine in which a drive shaft is provided so as to be orthogonal to an arch, in which a seal unit drive cam shaft and a return roller drive shaft, which are orthogonal to each other, pass through an orthogonal dual output shaft type speed reducer. A driving force transmission mechanism in an arch type packing machine, wherein the driving force transmission mechanism is connected to one motor.