JPS6229290B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a packaging device, and more particularly, to an indexing device for equally spaced indexing of the outer periphery of a cylindrical object to be packed, which wraps a cylindrical object having a core hole by wrapping an arbitrary number of bands at equal intervals from the core hole to the outer periphery. Regarding the equipment,
A packing device that detects the diameter of a cylindrical object and automatically sequentially rotates the object to be packed by one-third or one-quarter of its diameter to perform so-called three-band or four-band wrapping. Regarding.

[Prior art and problems]

Several types of packaging devices for cylindrical objects having such core holes have been proposed in the past. In cases where the position cannot be detected automatically, there is a rotation angle control mechanism as shown in Japanese Patent Application Laid-Open No. 55-38245 and the main part of which is shown in Fig. 10. This is performed by rotating the rotary plate 73 that is brought into contact with the side surface of the object to be packed by sliding friction when the object to be packed W rotates, and controlling the rotation angle, so the entire process becomes slow. In addition to increasing the time required for one packing process and hindering packing efficiency, it cannot be applied to items that are short in the longitudinal direction, and since the side surface and rotating plate rotate in orthogonal planes, slippage between the two may occur. This method had many drawbacks, such as a lack of accuracy.

【the purpose】

The present invention eliminates such conventional drawbacks, and has a compact configuration that instantly and accurately detects the outer diameter of an object to be packed, no matter what diameter it is, and based on this detected value, The object to be packed is rotated on a lifter roller at regular intervals an arbitrary number of times according to the diameter of the object to be packed, and the object to be packed is rotated by a desired angle such as 1/3 or 1/4 to automatically remove the object to be packed. It is an object of the present invention to provide an apparatus that can wrap an arbitrary number of pieces with bands at equal intervals around the outer circumference.

【composition】

The structure for achieving the above object of the present invention will be described based on the illustrated embodiment. A machine frame 1, a packaging machine main body 10 provided in the machine frame 1 so as to be freely movable up and down,
Slide arches 20 and 21 connected to the bandway in the packing machine main body and provided movably in the core hole WC of the object W to be packed, and a lifter 30 provided below the slide arch so as to be movable up and down; Two lifter rollers 36, 36 are provided on the lifter so as to be freely rotatable by a motor and parallel to each other with an appropriate interval between them.
In the packaging apparatus, a swinging rod 57 is provided above the machine frame 1 and supports a diameter detection lever 51 which is rotated by the object to be packed that enters onto the lifter 30, and which is interlocked with the rotation of the diameter detection lever. Further, the swinging rod 57 is provided with a reverse rotation prevention mechanism, and the shaft 73 of the rotation adjusting means for controlling the rotation of the motor 39 of the lifter rollers 36, 36 is configured to be interlocked with the swinging rod 57. It is characterized by:

[Effect]

Therefore, the object to be packed W is placed on the lifter rollers 36, 3
6, the diameter detection lever 51 rises, and the swinging rod 57 that interlocks with the diameter detection lever rotates in accordance with the distance that the diameter detection lever 51 has risen. At this time, the shaft 73 of the rotation adjustment means interlocked with the swinging rod 57 that rotates in conjunction with the diameter detection lever is rotated by an amount corresponding to the detected diameter, and the packing machine body is lowered to circumferentially circumscribe the object to be packed. Every time one packing process is completed, the motors 39 of the lifter rollers 36, 36 rotate at a speed and time set in the rotation adjustment means, and after stopping, the motors 39 are set again after the set time required for one packing process has elapsed. The rotating and stopping operations are repeated a predetermined number of times within the specified speed and time, and the objects to be packed are packed at equal intervals through each of the packing steps performed between the stopping and rotation.

【Example】

Hereinafter, details of the present invention will be explained based on illustrated embodiments. FIG. 1 shows the entire packing apparatus according to the present invention, which has an indexing device for equally spaced around the outer periphery of objects to be packed. 1 is a machine frame, which supports the main body 10 of the packing machine so as to be able to move up and down; The fixed arches 2 and 3 located on the left and right sides of the main body 10 and the fixed arches 3 on the left and right sides of the machine frame 1 are horizontally suspended on both sides of the machine frame 1. The second slide arch 20, 2 moves forward and backward into the core hole WC.
1, and the upper part of the machine frame 1 is provided with an air drive device 4 and an air driving device 4, which is slidable by the objects to be packed carried on the lifter rollers in order to detect the core holes of the objects to be packed carried into the packing apparatus. A diameter detection lever 51 is provided, and below the machine frame 1, a lifter 30 is provided that is located parallel to the slide arches 20, 21 and has lifter rollers 36, 36 that can be freely rotated by a motor and is movable up and down. It is being Reference numeral 5 denotes a band pool from which a desired amount of bands are pulled out from a band reel 6 and pooled, and the bands are supplied into the main body 10 via a back pool 7. Note that W indicates the item to be packed and WC indicates the core hole. The packaging machine main body 10 has a rectangular outer frame constituting the machine frame 1 supported by another frame body having a freely rolling guide roller, and is mounted on the machine frame 1 on the top of the other frame body. The rod end of the provided air cylinder 8 is attached, and the packaging machine main body 10 is provided within the machine frame 1 so as to be freely movable up and down. Further, a known band supply and tension mechanism 12 and welding and cutting mechanisms 13 are housed in the packaging machine main body 10, and the band supply and tension mechanism 12 and the machine frame 1 are arranged on the lower surface of the main body 10. There is a built-in bandway 14 that connects band guide arches 2 and 3 fixed to the left and right frames with their openings facing each other and allows the packaging band to pass through, and a phototube (not shown) is installed on the bottom surface of the main body 10. is installed. The left and right band guide arches 2 and 3 are curved, and the upper end surfaces of the arches 2 and 3 are arranged in the main body 1.
The lower end surface is connected to the opening surface of the bandway 14 linearly arranged in the 0, and the lower end surface is brought into contact with the upper opening surface of the rear end of the slide arch when the two slide arches enter and join. There is. Although the details are not shown, the two slide arches 20 and 21 are fixed on a guide rod, and a rack is carved on the lower surface of the guide rod, and a rear end of the guide rod that does not have the rack is provided with a rack. A roller is attached and housed in a case 25. The gear meshing with the rack is connected to the sprocket of the motor 28 via a chain to a sprocket arranged parallel to the gear. In this way, the slide arches 20 and 21 on the guide rod move linearly forward and backward at a fixed position without vertical and horizontal wobbling. As shown in FIGS. 1 and 2, the lifter 30 transmits the rotation of a motor 32 installed on a base 31 via a threaded rod 33 to the ends of links 34 and 34 that intersect at the center, respectively. The rollers 35 provided at each end of the lifter 30 rotate in the lower part of the lifter 30 and in the groove of the base 1 to raise and lower the lifter 30 in a horizontal state. Further, the lifter 30 is provided with lifter rollers 36, 36 with appropriate gaps in the longitudinal direction of the upper surface thereof, and the lifter rollers 36, 36 are connected to sprockets 37, 37 provided at one end, respectively, as shown in FIG. The motor 39 is connected via a chain 40 to a motor 39 placed within a frame 38 which is suspended and supported by the motor 30 . In Fig. 2, reference numeral 41 denotes an unloading board, which is a plate tilted toward the unloading line OL and fixed on the base 31, which protrudes from the surface of the lifter rollers 36, 36 when the lifter 30 is lowered to its lowest point. installed at a height. In the same figure, 42 is a stopper that urges one end of the crank supported by the lifter 30 to protrude from the surface of the lifter rollers 36, 36 through a spring 43, and once the lifter roller 3
The items to be packaged placed on 6 and 36 are transported to the carry-in line.
It is designed to prevent them from transferring to the IL side. Reference numeral 44 denotes a stopper pin which projects from the surface of the lifter rollers 36, 36 by means of an air cylinder as the lifter 30 ascends, and is lowered by the cylinder when descending. Next, a device for equally spaced indexing of the outer periphery of an object to be packed according to the present invention will be explained. This device detects the diameter of the object to be packed, and based on the detected diameter, rotates two lifter rollers, which are rotatably provided parallel to the axis and spaced apart at an appropriate interval, to circumferentially circumscribe the object. The rotation is stopped at each position where the material is divided into equal parts, and at each stop, a band is applied, so that the object to be packed is covered with so-called three or four bands. In FIG. 1 and FIGS. 4 to 9, 51 is a diameter detection lever, which has a roller 52 at its tip, cranks 53, 53 are rotatably connected to the other end, and is mounted above the machine frame 1. It is supported by a mounting plate 22 provided. One end of the adjustment belt is attached to the upper end of this diameter detection lever 51, that is, one end of the chain 54 is attached via the rod end 23 in this embodiment,
The machine frame 1 in FIG.
The other end of the chain 54 is connected to the rod 5.
Connect to 5. As shown in FIG. 5, the rod 55 is connected to one end of a swing rod 57 rotatably provided on a support plate 56 that stands up from the base 31. As shown in FIG. The swinging rod 57 has its pivot point 58 at a 2:1 point of its entire length, and a short lever 59 is provided at the tip of the other side, that is, the short side 57a, protruding in a direction perpendicular to the swinging rod 57. and,
The tip of one side, that is, the long side 57b, is connected to the chain 54 which interlocks with the diameter detection lever 51 via the rod 55 as described above. In Fig. 4, reference numeral 61 is a stopper which has a built-in spring. On the other hand, in FIG. 5, reference numeral 60 denotes a position detecting means, such as a touch sensor, and the contact piece 64 of the sensor 60 is attached so as to be able to come into contact with and separate from the short lever 59 provided at one end of the swinging rod 57. That is, the touch sensor 60 is connected to the lifter 3 described above.
It is attached at an appropriate position below the correction rod 65 which moves up and down with zero. This correction rod 65 has its upper end facing the midpoint between the two lifter rollers 36, 36, and is arranged in parallel with the support plate so that it can move up and down independently in a vertical state. 65 into the bearing member 67, and the bearing member 67
A spring 66 is disposed between the upper end protrusion of the correction rod 65 to urge the correction rod 65 upward. Incidentally, a one-way clutch 26 and an electromagnetic brake 27 are attached to the shaft of the swinging rod 57, as shown in FIG.
is provided, and the one-way clutch 26 operates only when the electromagnetic brake is in operation, forming a reversal prevention mechanism that allows the swinging rod 57 to rotate only in the clockwise direction in FIG. 5. 28 is a weight, and 68 is a brake, so that even when the diameter detection lever 51 is raised rapidly, the swinging rod 57 swings slowly, so that the diameter of the object to be packed can be accurately detected. It is also possible to use other detection means instead of the touch sensor 60, such as a proximity sensor or a limit switch. Further, 71 is a crank whose upper end is rotatably supported at an arbitrary position of the swinging rod 57, and a rack 72 on the side surface of the lower end is connected to a motor of the lifter rollers 36, 36 such as a variable resistor, a timer or a pulse generator. It is meshed with a gear provided on a shaft 73 which constitutes rotation adjustment means of 39. FIG. 7 shows another embodiment of the equally spaced indexing device according to the present invention, in which the same members are given the same numbers. The difference from the previous embodiment is that the crank 71 is separated into two sides 71a and 71b, and 71a has one end pivoted at an appropriate position of the swinging rod 57, and the other end is connected to the side 71b through a rod end. One end and both ends are rotatably connected, while the other end of the side 71b is fixed to the shaft of a rotation adjusting means 73 of a lifter roller such as a timer or a pulse generator. The rotation adjustment means 73 is attached to the support plate 56. The rotation adjustment means rotates, for example, the shaft of a variable resistor by the rack 72 by an amount corresponding to the detected diameter, and this rotation causes the flow to flow to, for example, a speed control motor provided in a control panel (not shown). It is provided to regulate the voltage and control the rotational speed of this motor. The center of a disk is inserted into the rotating shaft of this speed control motor, and a slit is formed in the disk. Further, a phototube for detecting the slit is attached, and the rotation of the motor of the lifter roller is stopped by detecting the position of the slit using the phototube. Furthermore, after a predetermined time (one packaging process time), the timer rotates the disc and therefore the motor of the lifter roller again, and then,
As described above, the rotation of the lifter roller motor is stopped by detecting the position of the slit using a phototube. Thereafter, the above operation is repeated one or more times. Next, the operating state will be explained. The packaging machine main body 10 is now in the highest position, and each end surface of the bandway 14 in the main body 10 is joined to the curved left and right fixed arches 2 and 3 fixed to the machine frame 1. Also, the left and right slide arches 20, 21
is fully opened and completely housed in the case 25, and the lifter 30 is in the position shown by the chain line in FIG. . When the power is turned on in this state, the diameter detection lever 51
An electromagnetic brake provided on the shaft of the swinging rod 57 that is interlocked with is activated, and a one-way clutch is activated to allow the swinging rod 57 to rotate in only one direction (FIG. 6). When the article to be packed W is carried onto the lifter rollers 36, 36 from the carry-in line IL, the lever 51 rises, and the long side 57b of the swinging rod 57, which is connected to the diameter detection lever 51 via the chain 54, As shown in FIGS. 5 and 7, the diameter detection lever 51 rotates by the same distance as the upward movement, while the short side 57a of the swinging rod 57 rotates a distance that is half the length of the long side 57b. That is, the moving distance of the long side 57b is the same as the diameter of the object to be packed, and the moving distance of the short side 57a is the same as its radius, 2:1. In addition, the lifter roller 3
The correction rod 65 between 6 and 36 is pushed down further as the short axis of the object becomes larger depending on the size of the object to be packed. Therefore, the touch sensor 60 is also lowered. The swinging rod 57 maintains its swinging position by the brake, electromagnetic brake, and one-way clutch provided on the shaft of the swinging rod 57 when the diameter detection lever 51 is pushed up by the object to be packed. At this time, the rack 72 of the crank 71 is moved by the sliding movement of the swinging rod 57 interlocking with the diameter detection lever.
As a result, the shaft of the rotation adjusting means, such as the variable resistor 73, is rotated by a predetermined value, and the voltage flowing to the speed control motor in the switchboard connected to the variable resistor is adjusted. Next, when the button is turned on, the lifter 30
is raised by the rotation of the motor 32, and when the contact piece 64 of the touch sensor 60 provided on the correction rod 65 contacts the short lever 59 of the swing rod 57, the rotation of the motor 32 is stopped by this signal, and the lifter 30 also stops rising and is fixed at that position. In response to the signal from the touch sensor 60, the motor of the slide arch starts rotating, and the left and right slide arches 20, 21 move through the core hole WC of the object to be packed so that the band passes below the center of the packing machine main body 10.
The projections provided on the guide rods of the arches 20 and 21 engage the limit switch LS in the case 25.
2, the motor stops and both arches 20 and 21 become connected. The signal from the limit switch LS2 causes the feed roller of the band supply mechanism 12 to feed the band, and when the band passes through the connected slide arches 20 and 21 and reaches the gripping mechanism at the tip of the band in the main body 10, the band is fed out. The tip of the band pushes in the limit switch LS3 provided in the section.
Further, the feeding time of the band supply mechanism is controlled by a timer T1, and the feed motor stops rotating. When the limit switch LS3 provided in the gripping mechanism at the band tip is pushed in by the band, the camshaft of the band adhesion/cutting mechanism 13 starts to rotate and grips and fixes the band tip. By grasping the tip of the band, the limit switch LS3 is turned OFF, and in response to the OFF signal, the main body 10 is lowered by the cylinder 8, and the reverse rotation of the band supply mechanism 12 is started (primary tightening). The main body 10 stops at a position where the phototube provided on the lower surface of the main body detects the object W to be packed. Further, the reversal is completed after a certain period of time has elapsed by the timer T2, but before that, the secondary tightening mechanism starts secondary tightening of the band in response to a signal from the phototube. Accordingly, the band is ejected from each arch and bandway by the primary tightening, and is then wound around and tied tightly around the object to be packed. When the secondary tightening of the band, which started when the phototube is turned on, is finished by the timer T3, the camshaft is rotated again by the control motor, the band supply end side is gripped and fixed, the band is held in a tightened state, and the camshaft is rotated. Timer T4 turns ON at the same time as the stop.
After a certain period of time has elapsed, the camshaft rotates again to complete the process of bonding and cutting between the overlapping parts of the bands, completing one round of packaging. Next, the rotation of the camshaft turns on the other limit switch LS4, so the main body 10 is raised by the cylinder 8, and the bandway 14 in the main body 10 is connected to the upper edge of the fixed arches 2 and 3. When the position is reached, the limit switch LS5 is activated.
It is turned on and the lifting of the main body 10 is stopped. At the same time as the stop, the timer T5 connected to the motor 39 of the lifter rollers 36, 36 is turned on, and the lifter rollers 36, 36 are activated for a predetermined period of time, that is, when the diameter of the object to be packed is detected, the roller 3 is moved by the swinging rod 57.
The roller rotates within a pre-adjusted rotation time by rotating the shaft of a roller rotation adjusting means which is connected to the motors 39 of 6 and 36 via a speed control motor and a photoelectric tube in the power distribution control panel, and then stops. That is, when the speed control motor rotates at a predetermined speed by a voltage set by a variable resistor, and a photocell detects a slit in a disc attached to the motor, the motor and the motor of the lifter roller are stopped. The speed control motor rotates again after a predetermined time according to the timer, and the lifter roller motor also rotates. When the phototube detects the slit in the disc again, the lifter roller motor stops rotating again. In this way, the object to be packed is rotated every third or fourth of its circumference. Thereafter, the above operations are repeated one or more predetermined times through the packaging process of raising the main body, feeding the band, lowering the main body, tightening, adhering the overlapping part of the band, and cutting. That is, as shown in FIG. 9, when three or four arbitrary bands are applied to the object to be packed and the main body finally rises, the signal of the limit switch LS5, which detects the highest position of the main body, is activated. Both slide arches 20, 21 are connected to motors 28, 28.
Opened by Slide arches 20 and 21 are completely attached to case 2.
5, 25, the slide arch 2
Limit switch LS6 with 0,21 guide
turns ON, and with this signal, the motors 28, 28 of the slide arch stop, and the timer T6 connected to the motor 32 of the lifter 30 is ON, the motor 32 rotates, and the lifter rollers 36, 36 are brought to the lowest position. (The two-dot chain line in Figure 7) is reached. Therefore, the items to be packed are transported to the unloading line OL by the unloading board 41.
be transferred to a higher position. When the lifter 30 reaches the lowest position, the limit switch LS7 provided there turns on, stopping the lifter 30 from descending and turning the centering mechanism's swinging rod 5.
The electromagnetic brake provided at 7 is released. Therefore,
The swinging rod 57 returns to its old position. Further, when the timer T6 connected to the motor 32 of the lifter 30 times up, the lifter rises again and returns to the position shown by the solid line in FIG.
Upon this return, the limit switch LS8 is turned on, and the electromagnetic brake of the centering mechanism is turned on in preparation for the next packing.

【effect】

As described in detail above, the present invention includes a machine frame, a packing machine main body provided within the machine frame so as to be able to rise and fall, and a packing machine that communicates with a bandway in the packing machine main body and that is connected to a core hole of an object to be packed. A packaging device comprising a slide arch that is movable forward and backward, a lifter that is movable up and down below the slide arch, and two lifter rollers that are rotatably mounted on the lifter and parallel to each other and spaced apart from each other by a motor. A swinging rod is provided above the machine frame to support a diameter detection lever that is rotated by the object to be packed that enters onto the lifter, and is linked to the rotation of the diameter detection lever; In addition to providing a reverse rotation prevention mechanism, the shaft of the rotation adjusting means for controlling the rotation of the motor of the lifter roller is configured to rotate in conjunction with the swinging rod, so that objects to be packed of any diameter can be packed. The outer diameter of the object is instantly and accurately detected, and based on this detected value, the object to be packed is rotated on a lifter roller at equal intervals an arbitrary number of times according to the diameter of the object to be packed, and the object to be packed is reduced to one third. Or, it rotates at a desired angle such as 1/4 to automatically reach the core hole and circumference of the object to be packed, and can automatically wrap any number of bands at equal intervals on the outer periphery in a short time. It is effective.

[Brief explanation of the drawing]

Figures 1 to 9 show embodiments of the present invention; Figure 1 is a front view showing the whole, Figure 2 is a side view showing the lifter roller, and Figure 3 is a main part of the lifter roller. 4 is an explanatory diagram showing the installed state of the lever, FIG. 5 is a schematic diagram showing the first embodiment of the equal interval indexing device, and FIG. 6 is a vertical cross-sectional view of the central part of FIG. FIG. 7 is a sectional view showing a second embodiment of the equally spaced indexing device, FIG. 8 shows the operating state of the device of the present invention, and FIG. 9 shows the state of binding of objects to be packed by the device of the present invention. FIG. 10 is a schematic diagram showing the main parts of a conventional example. 1... Machine frame, 10... Main body, 20, 21... Slide arch, 30... Lifter, 31... Base, 36, 3
6... Lifter roller, 39... Motor, 57... Swinging rod, 71... Crank, 72... Rack, 73... Variable resistor, W... Cylindrical packaged object having a core hole, WC
...core hole.

Claims (1)

[Scope of Claims] 1. A machine frame, a packaging machine body provided within the machine frame so as to be movable up and down, and a packaging machine body connected to a bandway in the packaging machine body and movable up and down into the core hole of the object to be packed. A packaging device comprising a slide arch provided, a lifter provided below the slide arch so as to be able to rise and fall freely, and two lifter rollers provided on the lifter so as to be freely rotatable by a motor and parallel to each other with an appropriate interval between them. A diameter detection lever is provided above the machine frame to support the diameter detection lever which is rotated by the object to be packed that enters the lifter, and a swinging rod is provided which is linked to the rotation of the diameter detection lever, and furthermore, the swinging rod is provided with a mechanism to prevent reverse rotation. Equal spacing in a packaging device for cylindrical objects having a core hole, characterized in that a mechanism is provided and the shaft of a rotation adjustment means for controlling rotation of the motor of the lifter roller is configured to be interlocked with the swing rod. Output device.