JPH0711081Y2 - Automatic band reel change and band loading device - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a band reel changing / loading device for a packing machine, and more particularly, to a device for changing a plurality of band reels and automatically reloading a band tip of another band reel between feed rollers.

[Prior art]

Conventionally, two band reels are installed on the side of the main body of the automatic packing machine or on the side near the band insertion port, either vertically or side by side at the same height. In this way, explaining the reason why two band reels are used, especially when the automatic packing machine is installed between the conveyor lines, the objects to be packed conveyed on the conveyor lines are automatically packed. The machine automatically stops below the machine's band guide arch and is banded a number of times and packed and then conveyed to the next process on the conveyor line. This packing work is carried one after another. Since it is automatically performed continuously, the band of 2000 to 3000 m in the band reel is coiled, and the band of the band coil held by the circular plate is gradually reduced, and finally disappears. Then, it is necessary to pull out the band from the new band reel and feed it into the automatic packing machine, but since there is only one reel unit in the commonly used packing machine, mounting the band coil and band in the packing machine. It takes a relatively long time to set, and the packing line is stopped, which is a great loss particularly in a packing line in which a large number of continuous packing operations are automatically performed. Therefore, by providing two band reels as described above,
Even if one of the band reels runs out of band, it is possible to shorten the time by pulling out the band from the other band reel to which the band coil has been previously attached and loading it into the automatic packing machine.

[Issues to be solved by the device]

In the above twin band reel packing machine, when the band of one band reel is used up, the work must be interrupted and the band must be loaded from the other band reel. , The economic loss due to the line stoppage due to the work interruption during this period, and the time loss due to the complexity of the reloading work have been extremely serious problems. The present invention can automatically replace the band of a used band reel of such a double reel or a plurality of band reels with a band of another reel and reload the band reel of a packing machine. The purpose is to provide a device.

[Means for Solving the Problems]

In order to achieve the above object, in the present invention, a reel unit having a plurality of band reels and a band end detecting means of the plurality of band reels, and a band end side which operates for a predetermined short time by a detection signal of the detecting means are provided. A pool shooter equipped with a plurality of band end gripping means for gripping, a pool roller driven in forward and reverse directions in the pool shooter, and a plurality of touch rollers selectively press-contactable and separable with respect to the pool roller. At the band guide position between the feed rollers that rotate forward and backward to send out the band from the band outlet of the pool shooter in the pool box and send out the band in the pool box by sending the band of the separate band reel toward the pool box. It has a band guide that guides the band, and this band guide And a band nonexistence detection provided on the pool shooter, which has signal generation means for confirming that it is in the band guide position, and is pulled out from the band guidance part by a detection signal of the band presence detection means provided on the feed roller section. A band guide position confirmation signal from the band guide, and the pool roller is driven to rotate in the band pool direction by the band guide position confirmation signal of the band guide to release the grip on the band end side. It is characterized in that the roller is rotationally driven in the direction opposite to the band pool direction.

[Action]

Therefore, according to the present invention, by the band end detection signal, the band end side is gripped and fixed at the lock shooter near the pool shooter, the pool roller is stopped, and after releasing the grip fixation, the pool roller is reversed and the pool roller is rotated. When the band is ejected from the box and the tip of the band passes the pool shooter, the reverse rotation drive of the pool roller is stopped by the band nonexistence detection signal, and the touch roller that presses against the pool roller is replaced, and the pool roller and other touch rollers are pooled. The pool roller rotates the band in the band feeding direction to the pool box while pressing the band between the rollers. The band non-existence detection signal loads the band guide at the band guide position, and the sent out band reaches the feed roller unit. The band guide is removed from the band guide position by the band presence detection signal of the feed roller unit, and the band is pooled in the pool box.

【Example】

An embodiment will be described with reference to the drawings. In FIGS. 3 to 5, a band for feeding a band by a feed roller unit 3 is provided to a band guide arch 4 that is provided over a work table 8 of an automatic packing machine body 1. A pool roller portion 30 is provided facing the band entrance of the pool box 2 for pooling. Further, a tension arm 5 for tightening the band is provided ahead of the feed roller 31 of the feed roller portion 3 in the band feeding direction, and an arm shooter 6 is attached to the tension arm 5. Two known band reels are installed on the pool roller section 30 side of the automatic packing machine body 1. 7 is a balance bar, which detects whether or not the amount of band pool in the pool box 2 is sufficient by detecting the weight of the pooled band, etc., and a limit switch provided at the end of the balance bar 7 so that it can be separated from the pool roller section 30 Motor rotation
The stop is controlled so that the pool roller is rotated in the delivery direction to deliver the band B when the predetermined pool amount is not reached. 72 is a band guide, the fourth
An actuator (not shown) such as an air cylinder or a solenoid is provided so that the band can be set at the band guide position by moving it in the upper right (back) direction on the paper surface and the band can be directly guided from the pool roller 71 to the feed roller unit 3. It has a lever 73 having. Reference numeral 77 is a limit switch, which constitutes a signal generating means for detecting whether the band guide is in the band guide position or in the withdrawal position. The band guide 72 is formed in a U-shape in cross section with one side open so that the band guide 72 can be moved out of the guide position at the start of the band pool by its movement. The embodiment shown in FIGS. 2A and 2B shows an example in which a reel unit composed of two band reels is installed on the frame 11, and two band reels are attached to the band reels. On the side of the body,
It is optional, such as arranging in parallel on the pedestal in the vertical direction. Reference numeral 11 denotes a pedestal, the upper surface of which has a flat plate shape, and the lower surface of the pedestal 11 is reinforced by fixing a reinforcing angle 17. Bolts 20 are screwed at four positions around the pedestal 11 so that the height of the pedestal 11 can be adjusted, and the pedestal 11 is supported. Then, on the upper surface of the pedestal 11 on the line passing through the substantially central position of the band reels 40a, b having the band coil 13 mounted between the reel-in circular 44 and the reel-out circular 45 forming the reel unit 10, the band reel 40a, There are provided four band guide rollers 24a to 24d for guiding the band pulled out from b to the pool shooter 70 of the automatic packing machine body 1. Band guide rollers 24a, b are band reels 40a, b
It is provided on the reel brake arm 49 side in a position where it does not collide with the free slide roller 51 of the reel brake arm 49, and the lower end is fixed by a screw 26 so as to be freely rotatable on the upper end of a holder 22 erected on the stand 11. It is pivotally attached to a roller bracket 23 pivotally attached by a pin 25. Then, the band reel 4 of the band guide rollers 24a, 24b
A band guide having two rollers each on the upper and lower sides of a holder 27 which is vertically installed on the pedestal 11 with two lower rollers fixed to the symmetrical position via 0a and b Rollers 24c and d are rotatably attached to the shafts. In FIG. 6, the band reels 40a, 40b of the reel unit 10 support the reel shaft 43 through bearings in the support hole formed at the upper end of the reel unit base 41 in the lateral direction, and the reel shaft 43 is supported on the reel shaft 43. A reel bracket pulley 42 in which the reel-in circular 44 and the reel center drum 46 are fixed by screws is fitted and fixed by screws. Further, a brake belt 48 having one end side attached to the reel unit base 41 is wound around the V groove of the reel bracket pulley 42 and attached, and the other end side of the brake belt 48 is attached to one end side of the brake tension holder 53.
Pivot through 54. The central portion of the brake tension holder 53 has a shaft 4 protruding from the reel unit base 41.
1'is attached to the shaft, the one end of the reel brake arm 49 is fixed to the other end side of the brake tension holder 53, and the spring 50 attached to an arbitrary position of the reel brake arm 49 has the brake belt 48 reeled. The V groove of the bracket pulley 42 is urged so that it is always wound. A sory slide roller 51 is movably attached to the tip of the reel brake arm 49. Further, the reel-out circular 45 is fitted on the tip side of the reel shaft 43, and the reel nut handle 47 is screwed. In FIGS. 1 (A) and 1 (B), the pool roller 55 functions as a normal pool roller that rotates forward to send a band to the pool box 2 for pooling a predetermined amount, and also the band of the band reels 40a, 40b. At the time of replacement / loading, when there is a band in the pool box 2 that is reversed and remains in the band guide arch 4 via the pool box 2, this band is excluded from the pool box 2 and another band reel It functions as a band loading roller that rotates in the forward direction so as to send the band from the band coil 13 to the band guide 72 via the pool shooter 70. The pool roller portion 30 is composed of a pool roller 55 and a pool touch roller 56a, 56b which are rotatably driven in forward and reverse directions in a roller shooter 54 forming two band passages 60a, 60b. It is connected to a forward / reverse drive motor through a belt (not shown) wound around and is rotationally driven. The pool touch rollers 56a, b are supported by eccentric shafts 58a, b, and are urged by a spring (not shown) toward the pool roller 55 by a solenoid 61 connected to a link 59 mounted on the eccentric shafts 58a, b. One of the peripheral surfaces of the touch rollers 56a and 56b is constantly in pressure contact with the peripheral surface of the pool roller 55. The side surfaces of the pool roller 55 and the pool touch rollers 56a, 56b are covered by covers (not shown). The pool roller 55 and the touch rollers 56a and 56b that are pressed and separated from each other above and below the outer circumference of the pool roller 55 are eccentric bearings in circular notches slightly larger than the outer circumferences of the touch rollers 56a and b formed in the roller shooter 54. The eccentric shafts 58a, 58a are
A link 68 for connecting the touch rollers 56a and 56b is alternately actuated to press and separate from the pool roller 55 by a solenoid 69. The pool shooter 70 has Y-shaped band passages 65a, 65b, 65c formed therein, one passage side 65c is located inside the pool box, and two passages 65a, 65b are formed in the roller shooter 54.
It is fixed to the roller shooter 54 so as to face the outlets of the second band passages 65a and 65b inside, and the band absence detecting means 80 is arranged in the one band passage 65c on the pool box 2 side. . That is, the operating rod 83 of the limit switch 81
Is inserted into a hole 82 provided on one side of the band passage 65c of the pool shooter 70, and the tip of the operating rod 83 is disposed so as to face the bottom surface of the band passage 65c. Lock shooters 71a and 71b are arranged at the entrance sides of the two band passages 60a and 60b of the roller shooter 54, respectively.
That is, the lock shooters 71a and 71b have the band passage 7 inside.
4a, b, the band passages are communicated with the band inlets of the band passages 60a, 60b of the roller shooter 54, and the band passages 74a, b are formed from holes formed in the upper and lower surfaces of the lock shooters 71a, b, respectively. A gripping mechanism at the end of the band is provided, which is composed of solenoids 76a, b having the tips of rods 75a, b facing to. The solenoids 76a and 76b are used for the band reel 40 as described later.
It is actuated by a detection signal of the end of the band pulled out from a and b, and the end of the band is held and fixed by the tips of rods 75a and b in band passages 74a and b of lock shooters 71a and 71b, and released after a predetermined time. In FIGS. 2A and 2B, the band end detecting means 91a and 91b have the same structure, and the band guide roller 24
It is composed of reel shooters 90a, b arranged in front of c and 24d in the band feeding direction and limit switches 91a, b. The reel shooters 90a, b are provided with a band passage 92a therein, and an operating rod 83a is provided in the band passage 92a. Limit switches 91a or 91b facing the tips of the ends of b and b are fixed to brackets 94a and 94b, respectively, and when the band end passes through these parts, the limit switch 91a or 91b is turned on and the end of the band is detected to detect this. Signal to lock shooter 71a or 71b solenoid 76
The end of the band is prevented from being drawn into the pool box 2 due to the inertia of the pool roller 55 by operating the a or 76b for a predetermined short time. Note that the structures of the pool roller and the touch roller are not limited to the above-described demonstration example, and a pair of touch rollers that are alternately driven to come into contact with and separate from each other by a pair of rollers that are rotationally driven in opposite directions are known. It may be configured by two pairs of rollers used for the feed roller section of the above, and other arbitrary design changes are possible. Next, the operation of the above embodiment will be described. In FIG. 1 (A), the band pulled out from the band reel 40a, b is passed through the free slide rollers 51a, b, the band guide rollers 24a, b, and the band passages 92a, b of the reel shooters 90a, b. From the band guide rollers 24c, d,
The band tip on the band reel 40b side is arranged in the band passage 60a between the pool roller 55 and the touch roller 56b of the roller shooter 54 through the band passages 74a, b in the lock shooters 71a, b. The band of one of the band reels 40a reaches the feed roller 31 through the band passage 60a and the band passage 65a of the pool shooter 70, goes around the band guide arch 4, and between the pool roller portion 30 and the feed roller portion 3. A predetermined amount of bands are pooled in the pool box 2 of. The predetermined amount is the length of the band required for at least one packaging process, and is obtained by adjusting the balance bar 7 and the limit switch so that the length is equal to or longer than one round of the band guide arch 4. Now, as described above, the band pulled out from the band coil 13 (a) of the one band reel 40a is used,
Finally, when the band end passes through the reel shooter 90a, the limit switch 91a, which is the band end detection means of the reel shooter 90a, operates and issues a band end detection signal. Lock the band end side to the lock shooter 7
Hold and fix in the band passage of 1a. At the same time, the forward / reverse drive motor of the pool roller 55 is stopped by the band end detection signal, the pool roller 55 is stopped rotating, and due to the rotation inertia of the pool roller 55, the band end is in the pool box. You will not be drawn in. During this time, the packing machine is in any one of predetermined packing processes such as gripping the tip of the band, pulling back the band, tightening, cutting the band supply end, welding the band overlapping portion, and feeding the band into the band guide arch by the feed roller 31. Since at least the band of the one packing process is stored in the pool box, it is performed without any trouble until the one packing process is completed, and the end detection signal causes each part to return to its original position after the completion of one process. While waiting, the transport line is stopped if necessary, and the following band reel replacement and band loading are performed. The gripping and fixing of the band end by the band end detection signal is immediately released after a predetermined short time (time from the generation of the band end detection signal to the stop of the rotation of the pool roller), and when the set time is expired, the pool roller 55 is driven in the reverse direction. The bands in the pool box 2 or in the band guide arch are discharged to the outside of the pool box. Band non-existence detecting means 80 whose band tip faces the band passage 65c of the pool shooter 70
After passing through, the pool roller 55 stops the reverse rotation by the detection signal of the detection means 80, and at the same time, the solenoid 69 on the rear surface of the roller shooter 54 is energized by the band absence detection signal, the link 68 is slid, and the touch roller 56a. Is released from pressure contact with the pool roller 55, and this time the other touch roller
56b is pressed against the pool roller 55. At the same time, the pool roller 55 is driven to rotate in the same direction as the reverse rotation, and the tip between the pool roller 55 and the touch roller 56b in the other band passage 60b of the roller shooter 54 is passed through the band passage 74b of the pre-caulking Roke shooter 71b. The band from the other band reel 40b on which is arranged is sent out in the pool box direction. The band absence detection signal of the pool shooter 70 actuates an air cylinder (not shown) connected to the lever 73 of the band guide 72, causing the band guide 72 to move to the pool shooter 70.
The band guide 72 is located at the band guide position between the passage 65c, which is the band outlet, and the arm shooter 6 of the tension arm 5, and the means for confirming that the band guide 72 provided at the band guide 72 is at the band guide position is the detection signal. Occurs,
By this signal, the feed roller 31 which has already completed one packing process and is on standby rotates in the band delivery direction. The band sent out by the pool roller 55 and the touch roller 56b is sent from the arm shooter 6 to the feed roller 3 through the band guide 72, and the rotating feed roller 3
Thus, the band goes around the band guide arch 4 and the band tip reaches the band tip gripping mechanism 9. During this time, the means for detecting that the tip of the band (not shown) provided on the feed roller 3 reaches the feed roller generates this detection signal, and the detection signal causes the band guide 72 to be pulled out from the band guide position. It Further, the detection signal restarts the transportation line which has been stopped and waited if necessary. Further, during this time, the contact of the touch roller 56b to the pool roller by the solenoid 69 continues, and thereafter, until the detection signal of the band absence detecting means 80 of the pool shooter 70 is generated, the pool roller 55 and the touch roller 56 are continued.
By the rotation of b, the band is continuously fed, and the band guide 72 does not exist at the band guiding position, so that the fed band is pooled in the pool box 2. When the band is pooled by a predetermined amount, it is detected by a swingable balance bar 7 provided below the pool box 2, and the rotation of the pool roller 55 is stopped. The fact that the band has disappeared from the band coil 13a of the band reel 40a is detected by the end detection signal from the automatic packing machine body 1
The worker who recognizes it in the indicator lamp provided above the center or the central control room, loads the new band coil 13a on the band reel 40a until the band of the band coil of the other band reel 40b is consumed, and One band passage 60 of the roller shooter 54 through the lock shooter 71
It suffices to insert it in the lower part of the touch roller 56a in a predetermined procedure.

【effect】

As described above, according to the present invention, since the band end side is gripped and fixed by the band end detection signal, the band end side is not drawn into the pool box by the rotation inertia of the pool roller, and the pool shooter feeds the feed roller. Bands from other band reels are reliably loaded by the band guides that are inserted into and removed from the band guide positions of the section. Furthermore, the pool roller unit has a function of replacing and reloading a plurality of band reels and a function of a normal pool roller, so that the pool roller unit can be made compact.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, which is shown in FIG.
(B) is a schematic front view and rear view of the pool roller part, respectively. (A) and (B) of FIG. 2 are plan views and front views of the reel unit, respectively, and FIG. 3 is an automatic packing according to the present invention. FIG. 4 is a perspective view of a band guide, and FIG. 5 is a perspective view of a feed roller portion. Sixth
The figure is an exploded perspective view showing the entire reel unit. 2 ... pool box, 3 ... feed roller, 10 ...
… Reel unit, 40a, b …… Band reel, 55 …… Pool roller, 32 …… Band guide, 35 …… Feed roller, 56a, b …… Touch roller, 70 …… Pool shooter

Claims (1)

[Scope of utility model registration request] 1. A reel unit having a plurality of band reels and band end detection means for the plurality of band reels, and a plurality of band end portions for holding a band end side which operates for a predetermined short time by a detection signal of the detection means. A pool shooter having a gripping means, a pool roller that is driven in the normal and reverse directions in the pool shooter, and a plurality of touch rollers that can be selectively pressed against and separated from the pool roller, and a band of a band reel that is separate between each touch roller and the pool roller. A band for guiding the band at a band guiding position between the feed rollers which are forward and reverse for feeding and tightening the band from the band outlet of the pool shooter in the pool box. Have a guide and this band guide is in the band guide position. A band presence detecting means provided in the feed roller portion, and is pulled out from the band guide portion by the detection signal of the band presence detecting means provided in the feed roller portion; It is configured to be inserted into the guide position, and the pool roller is rotationally driven in the band pool direction in response to the band guide position confirmation signal of the band guide, and after the grip release on the band end side, the pool roller is opposite to the band pool direction. Automatic band reel replacement / band loading device characterized by being rotationally driven in the direction.