JPS6154650B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a packaging device, and more particularly, to a packaging machine suitable for banding and packing cylindrical objects having a core hole, and for positioning the core hole, which includes a diameter detection mechanism for the cylindrical object. It has a means for automatically centering the object to be packed, and packs the object by a sliding arch that enters the core hole, and also centers the object to be packed by one-third or one-fourth of its outer circumference. This invention relates to a packaging device that can automatically and sequentially rotate each band to perform so-called three-band or four-band wrapping.

[Prior art and problems]

Several types of packaging devices have been proposed in the past, as shown in Japanese Patent Application Laid-Open No. 55-12045-8, regarding the basic configuration of such packaging devices. Detection and rotation of a predetermined angle such as one third of the outer circumference of the object to be packaged cannot be performed automatically, and the method shown in the well-known Japanese Patent Application Laid-Open No. 55-38245 and shown in FIGS. 10A and B cannot be performed automatically. The centering mechanism and rotation angle control mechanism as shown in the section are as follows:
Both the receiving frame 71 on which the object to be packed W is placed and the holding frame 72 on the packing machine main body side are moved synchronously in opposite directions for positioning, resulting in extremely slow movement and significantly reducing work efficiency. ,Also,
Detection of the rotation angle is performed separately from the centering process described above.
When the object to be packed is rotated, the rotating plate 73 that is in contact with the side surface of the object to be packed is rotated in conjunction with sliding friction, and this rotation angle is controlled. This method cannot be applied to objects having a short length in the longitudinal direction, and has the disadvantage of lacking accuracy due to slippage between the side surface and the rotary plate.

【the purpose】

The present invention eliminates the drawbacks of the conventional machines, has a compact configuration, instantaneously and accurately detects the outer diameter of the object to be packed, and based on this detected value, centers the object, that is, The core hole of the object to be packed is located between the slide arches, and the object to be packed is rotated by a desired angle such as 1/3 or 1/4 of the outer circumference.
It is an object of the present invention to provide a packaging device that can perform packaging reliably.

【composition】

In order to achieve the above object, the present invention includes a main body of a packaging machine that can be raised and lowered, which is provided with a slide arch that can move forward and backward into a core hole of the object to be packed, which is provided on the upper part of the machine frame interposed between the loading and unloading lines; A lifter that can be raised and lowered is provided below the packaging machine main body and includes two or more lifter rollers that can be freely rotated by a motor, and a lever that is rotated by the upper end of the object to be packed that enters onto the lifter rollers is provided on the upper part of the machine frame, and A swinging rod that slides in conjunction with the lever is provided, and a reversal prevention mechanism is provided on the swinging rod to fix the slidable position in conjunction with the lever when the object to be packed enters, and the swinging rod is provided in conjunction with the lifter. A correction rod that moves up and down and is pushed down by the object to be packed is provided, a touch sensor is provided on the correction rod, the touch sensor is brought into contact with the swinging rod at the fixed position, and the motor of the lifter roller is A shaft of a roller rotation adjusting means such as a timer or a pulse generator for controlling rotation is connected to the swinging rod so as to be interlocked with the shaft.

[Effect]

Its action is that the correction rod that is pushed down by the object to be packed is moved up in conjunction with the lifter, and the touch sensor provided on this correction rod is moved in conjunction with the lever when the object to be packed enters, and is fixed by a reversal prevention mechanism. The lifter is brought into contact with the swinging rod in the position, the lifting of the lifter is stopped, and the core hole of the object to be packed is positioned between the slide arches. After each rotation and packaging process, the lifter roller is rotated for a preset angle or time corresponding to the degree of rotation, and the object to be packed is rotated at a desired angle such as 1/3 or 1/4. It is designed to rotate.

【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. Reference numeral 1 denotes a machine frame that supports the packing machine main body 10 in a vertically movable manner, and fixed arches located on the left and right sides of the main body 10 in the vertical direction of the figure. 2, 3, and two slide arches 20 that advance and retreat into the core hole of the object to be packed.
A lever 51 is provided on the top of the machine frame 1 to support the air drive device 4 and the main packaging device, and to be slid by the object to be packed in order to detect the core hole of the object to be packed. Also, below the machine frame 1,
located parallel to the slide arches 20, 21,
A lifter 30 having a roller 36 rotatable by a motor is provided so as to be movable up and down. 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. As shown in FIG. 3, the packaging machine main body 10 is supported by another frame 11 having guide rollers that can freely roll within a rectangular outer frame 11 constituting the machine frame 1. The tip of the rod 9 of the air cylinder 8 provided on the machine frame 1 is attached to the upper part of the machine frame 1, and the packaging machine 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 the 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. ) 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 bandway 14 is connected to an opening surface of a bandway 14 linearly arranged in the interior of the bandway 14, and its lower end surface is in contact with the upper opening surface of two slide arches, which will be described later. Moreover, the two slide arches 20 and 21 are the fourth
As shown in the figure, a rack 23 is attached to the bottom surface of the guide rod 22.
The guide rod 2 which is engraved with and does not have the rack 23
A roller 24 is attached to the rear end of the roller 2' and is housed in a case 25. A gear meshing with the rack 23 is connected to a motor 28 via a chain 27 to a sprocket 26 of the gear. In this way, the guide rod 22 moves linearly forward and backward without wobbling in the vertical and horizontal directions. As shown in FIGS. 5 and 7, the lifter 30 transmits the rotation of a motor 32 installed on a machine 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 machine base 1 to move the lifter 30 up and down in a horizontal state. The lifter 30 is provided with lifter rollers 36, 36 with an appropriate gap in the longitudinal direction of its upper surface, and the lifter rollers 36, 36 are provided with sprockets 37, 37 provided at one end, respectively, as shown in FIG. It is connected via a chain 40 to a motor 39 placed within a frame 38 suspended from the lifter 30 . In addition, in FIGS. 5 and 7, 41 is an unloading board, and the plate body slanted toward the unloading line OL side is moved to the machine stand 31.
The lifter 30 is installed at a height that projects from the surface of the lifter roller 36 when the lifter 30 is in its lowest position. In the figure, reference numeral 42 denotes a stopper that urges one end of the crank supported by the lifter 30 to protrude from the surface of the lifter roller 36 via a spring 43. The packaged items are transported to the delivery line.
It is designed to prevent them from transferring to the IL side. Further, reference numeral 44 denotes a stopper pin, which projects from the surface of the lifter roller 36 by an air cylinder as the lifter 30 ascends, and is lowered by the cylinder when descending. Next, the centering mechanism in the apparatus of the present invention will be explained. The centering mechanism 50 first detects the diameter of the object to be packed, and moves the lifter up and down based on the detected diameter, and moves the left and right slide arches 20,
This is for positioning the core hole of the object to be packed at the advance/retreat position of 21. In addition to centering, this centering mechanism controls the rotation of the motor 39 of the lifter roller 36 when three or four bands are applied to the object to be packed. In Figures 1, 2, 8 and 9,
Reference numeral 51 denotes a lever, which has a roller 52 at its tip, and cranks 53, 53 are rotatably connected to the other end.
It is supported above the machine frame 1. One end of a chain 54 is attached to the upper end of the lever 51 via a rod end, and the other end of the chain 54, which hangs down to the left of the machine frame 1 in FIG. 1, is connected to a rod 55 via a sprocket. The rod 55 is connected to the machine base 3.
It is connected to one end of a swinging rod 57 rotatably provided on a support plate 56 erected from 1. The swinging rod 57 has a pivot point 58 at a 2:1 point of its entire length, and a short lever 59 is provided at the tip of the short side 57a to protrude in a direction orthogonal to the swinging rod 57. , long side 57b
The tip of the lever 5 is connected to the lever 5 through the rod 55 as described above.
It is connected to a chain 54 that interlocks with 1. Further, 61 is a crank whose upper end is rotatably supported at an arbitrary position of the swinging rod 57, and a rack 62 on the side surface of the lower end is connected to the shaft of a roller rotation adjusting means such as a variable resistor, a timer, or a pulse generator. It is meshed with the gear provided at 63. On the other hand, 60 is a touch sensor, and a contact piece 64 of the sensor 60
is a short lever 59 provided at one end of the swinging rod 57.
It is installed so that it can be freely moved into and out of contact with the That is,
The touch sensor 60 is installed at an appropriate position below the correction rod 65 that moves up and down together with the lifter 30 mentioned above. This correction rod 65 is connected to the lifter roller 36
The upper end of the correction rod 65 is faced in the middle thereof, and the correction rod 65 is movable up and down in a vertical state. Then, the correction rod 65 is urged upward. The swinging rod 57 is provided with a one-way clutch and an electromagnetic brake (not shown), and only when the electromagnetic brake is in operation, the one-way clutch is used to move the swinging rod 57 clockwise in FIG. It forms a reversal prevention mechanism that allows rotation only in the opposite direction. Reference numeral 68 denotes a brake, which allows the swinging rod 57 to slide slowly even when the lever 51 is suddenly raised, so that the diameter of the object to be packed can be accurately detected. Next, the operating state of the present invention will be explained. Now, the packaging machine main body 10 is at the highest position, and each end surface of the bandway 14 in the main body 10 is connected to the curved left and right fixed arches 2 and 3 fixed to the machine frame 1 (Fig. 4). ). In addition, the left and right slide arches 20 and 21 are opened to the maximum extent, and the case 25
9, the lifter 30 is in the position shown by the dashed line in FIG. 9, that is, the intermediate stop position, and
The swinging rod 57 is located at the position indicated by the two-dot chain line in the figure. When the power is turned on in this state, the diameter detection lever 51
The electromagnetic brake provided on the axis of the swinging rod 57 that is linked to the oscillating rod 57 is activated, and the one-way clutch is disengaged.
can only be rotated in one direction. Loading line IL
When the article W to be packed is carried onto the roller 36, the lever 51 rises, and the lever 51 and the chain 5
Long side 57 of the swinging rod 57 connected via 4
b rotates by the same distance as the lifting distance of the lever 51, while the short side 57a of the swinging rod 57 rotates a distance half the length of the long side 57b. That is, the long side 57
The moving distance b is in the same ratio as the diameter of the object to be packed, and the moving distance of the short side 57a is in the same ratio as the radius, that is, 2:1. Further, the correction rod 65 between the lifter rollers 36 and 36 is pushed down further by the placed object to be packed, as the shorter diameter of the object to be packed increases due to the size of the object to be packed. Therefore, touch sensor 6
0 is similarly 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 lever 51 is pushed up by the object to be packed. Next, when the start button is turned on, the lifter 30 rises due to the rotation of the motor 32, and the contact piece 6 of the touch sensor 60 provided on the correction rod 65
4 comes into contact with the short lever 59 of the swinging rod 57, this signal causes the motor 32 to stop rotating, the lifter 30 also stops rising, and is fixed at that position.
In response to the signal from the touch sensor 60, the motors 28, 28 of the slide arches start rotating, and the left and right slide arches 20, 21 move the core of the object to be packed below the center of the packing machine body 10 so that the band can pass through. Advance into the hole WC, and the arches 20, 21
When the projection provided on the guide rod 22' pushes the limit switch LS2 inside the case 25, the motors 28 and 28 are stopped and both arches 20 and 21 are brought into a connected state. The signal from the limit switch LS2 sends out the band by the feed roller of the band supply mechanism 12, 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 tip of the band pushes in the limit switch LS3 provided in that part.
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 tip of the band is pushed in by the band, the camshaft of the band adhesion/cutting mechanism 13 starts rotating to grip and fix the tip of the band. 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. Therefore, the band protrudes from each arch and bandway, is wound around the object to be packed, and is tightly bound. When the secondary tightening of the band started with the photocell ON is finished by timer T3,
The camshaft is rotated again by the control motor, the band supply end side is gripped and fixed, and the band is held in a tight state. At the same time as the rotation of the camshaft stops, timer T4 is turned on, and after a certain period of time, the camshaft starts to rotate again. , the bonding and cutting processes between the band overlapping parts are completed, and one packing is completed. Next, the rotation of the camshaft is controlled by turning on the other limit switch LS4.
In order to do this, the main body 10 is raised by the cylinder 8, and the bandway 1
4 reaches the position where it connects with the upper edge of the fixed arches 2 and 3, the limit switch LS5 is turned on and the ascent of the main body 10 is stopped. Timer T5 connected to the motor 36 of the lifter roller 36 at the same time as the stop
is turned ON, and the lifter roller 36 is activated for a predetermined time.
That is, when the diameter of the object to be packed is detected, the shaft of the roller rotation adjusting means connected to the motor 39 of the roller 36 is rotated by the swing rod 57, so that the roller rotates within a pre-adjusted rotation time and then stops. That is, the object to be packed is rotated one-third or one-fourth of a turn. At the same time, the band feeding mechanism feeds the band into each arch for a predetermined period of time. Thereafter, the operation is the same as described above, from the lowering of the main body to the adhesion and cutting process of the band overlapping part, the raising of the main body, and the rotation of the lifter roller, and three or four bands are hung on the object to be packed. When the main body rises, both slide arches 2
0 and 21 are opened by motors 28 and 28.
The slide arches 20 and 21 are completely attached to the case 25,
25, the slide arch 20,
Limit switch LS6 by guide 22' of 21
turns ON, and with this signal, the slide arch motors 28, 28 stop, and the lifter 30
Timer T6 connected to motor 32 of
Then, the motor 32 rotates, and the lifter roller 36
reaches the lowest position (double-dashed line in Figure 7). Therefore, the items to be packed are transferred to the unloading line by the unloading board 41.
Transferred to OL. When the lifter 30 reaches the lowest position, the limit switch LS installed in that part
7 is turned on, the lifter 30 stops descending, and
The electromagnetic brake provided on the swinging rod 57 of the centering mechanism 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 packing machine main body equipped with a slide arch that can move forward and backward into a core hole of an object to be packed, which is provided in the upper part of a machine frame interposed between a carry-in and a carry-out line so as to be able to move up and down, and a packing machine. A lifter is provided with two or more rotatable lifter rollers which are provided below the main body so as to be able to rise and fall freely, and a lever is provided on the upper part of the machine frame to be rotated by the upper end surface of the object to be packed that enters onto the lifter roller, and A swinging rod that slides in conjunction with the lever is provided, and a reversal prevention mechanism is provided on the swinging rod to fix the slidable position in conjunction with the lever when the object to be packed enters, and the device moves up and down in conjunction with the lifter. Further, a correction rod is provided that is pushed down by the lower end surface of the object to be packed, a touch sensor is provided on the correction rod that can freely approach and separate from the swinging rod at the fixed position, and the rotation of the motor of the lifter roller is provided. The entire device has an extremely compact structure, in which the shaft of a roller rotation adjustment means such as a timer or pulse generator, which controls the rotation of the roller, is connected in conjunction with the swinging rod, and the diameter, outer diameter, or outer size of the packaged object can be instantly adjusted. The lifter is moved up and down a predetermined distance according to the detected value to position the core hole of the object to be packed between the slide arches, and the lifter roller is moved a predetermined distance according to the detected value after each packing process. By time-rotating and rotating the to-be-packed item by a desired angle such as 1/3 or 1/4, it has the great effect of being able to automatically band and pack the to-be-packed item several times at equal division positions in a short time. It has the following.

[Brief explanation of the drawing]

Figures 1 to 9 show one embodiment of the present invention. Figure 1 is a front view showing the whole, Figure 2 is a side view, and Figure 3 is a main part of the main body and the machine frame of the main body. Fig. 4 is a cross-sectional view showing the entire slide arch, Fig. 5 is a schematic diagram showing the lifter and unloading board, Fig. 6 is a side view showing the lifter roller, Fig. 7 8 is a sectional view showing the operation of the lifter, FIG. 8 is a side view showing an example of the centering mechanism, and FIG. 9 is a sectional view showing the operating state of the device of the present invention. FIGS. 10A and 10B show the main parts of the conventional example. 1... Machine frame, 10... Main body, 20, 21... Slide arch, 30... Lifter, 31... Machine stand, 50... Centering mechanism, 57... Swinging rod, 60
...Tatsuchi sensor.

Claims (1)

[Scope of Claims] 1. A machine frame interposed between the carry-in and carry-out lines, a packing machine body provided on the top of the machine frame so as to be movable up and down, and left and right fixed arches connected to bandways in the body, A slide arch that is connected to the left and right fixed arches and can move forward and backward into the core hole of the object to be packed, and a lifter that is provided at the bottom of the machine frame and on the machine base below the packing machine main body so that it can be raised and lowered by a lifting drive mechanism. In the packaging apparatus, the lifter includes at least two or more lifter rollers and a motor for rotating the lifter rollers, and a lever is provided on the upper part of the machine frame to be rotated by the object to be packed that enters onto the lifter rollers, A swinging rod that slides in conjunction with the lever is provided,
Further, a reversal prevention mechanism is provided on the swinging rod to fix the sliding position in conjunction with the lever when the object to be packed enters, and a correction rod that moves up and down in conjunction with the lifter and is pushed down by the object to be packed. a touch sensor that can freely approach and separate from the swinging rod at the fixed position is provided on the correction rod, and a roller rotation adjusting means such as a timer or a pulse generator for controlling the rotation of the motor of the lifter roller. A packaging device characterized in that a shaft is connected to the swinging rod so as to interlock with the swinging rod.